CN211931113U - A connection and fixing structure of multiple discrete circuit boards - Google Patents

Abstract

The utility model relates to a connection and fixing structure of a plurality of discrete circuit boards. The utility model is characterized in that: a power circuit board is provided with a placement hole, a pin row base is inserted in the placement hole, and a right-angle needle row is installed on the needle row base. The end of the pin header is connected to several driving circuit boards, the power circuit board and the side wall are connected through the bending structure provided on the side wall, and the side wall is provided with a side wall placement hole, through which the fixing plate straddles the two side walls. Between the side walls, a position of the fixing plate corresponding to the driving circuit board is provided with a clamping slot, and the fixing plate and the driving circuit board are connected by clamping through the clamping slot. The design of the utility model is scientific and reasonable, the structure space can be effectively utilized, the power density can be improved, the portability of product debugging and maintenance can be effectively improved, and at the same time, the disassembly and replacement time of the PCB circuit board can be reduced, and the maintenance cost can be saved.

Description

A connection and fixing structure of multiple discrete circuit boards

technical field

The utility model belongs to the technical field of fixed installation of electrical products, and relates to a connection and fixing structure of a plurality of discrete circuit boards.

Background technique

With the development of power electronics technology, electrical products are gradually developing towards high power density, low cost and maintainability. Among them, the PCB circuit board is the main body of the realization of the functions of the electrical product. The connection and fixing method of the PCB circuit boards with different functions in the same electrical product will affect the performance of the entire electrical product, including power density, spare parts cost and maintenance portability.

For fully-controlled transistors, a drive circuit and a power circuit are required. The existing products mainly focus on the following ways to handle the connection and fixation of the drive circuit and the power circuit:

1. Concentrating the drive circuit and power circuit in one circuit board, the PCB circuit board can be made into a multi-layer PCB circuit board, but this method is more expensive; it can also be made into a two-layer PCB circuit board with a larger area, This method requires a larger installation structure, the space utilization rate is not high, and the power density is not high;

2. Make the drive circuit into a PCB circuit board, and connect the components in the power circuit with wires. This method is mainly used in medium and high-power electrical products. For low-power electrical products, the power circuit is more on the board. components, which cannot be connected with wires;

3. The power circuit and the drive circuit are respectively made into a PCB circuit board, and the two are supported and fixed by a plurality of screws, and the electrical connection between the two is realized through the cable, so that the drive circuit board is installed in parallel on the power circuit board. However, this method will cause the power circuit board to be blocked by the driver circuit board, and the staff cannot directly debug and measure the power circuit board.

Therefore, it is necessary to design a connection fixing structure suitable for multiple discrete circuit boards.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a connection and fixing structure for multiple discrete circuit boards, which can effectively utilize the structural space, improve the power density, and effectively improve the portability of product debugging and maintenance. Reduce the disassembly and replacement time of the PCB circuit board, and save the maintenance cost.

The utility model solves its technical problem and realizes through the following technical solutions:

A connection and fixing structure for multiple discrete circuit boards is characterized in that: it comprises a power circuit board, a plurality of driving circuit boards, a fixing board and two side walls arranged symmetrically, the power circuit board is provided with placement holes, the A pin header base is inserted into the placement hole, a right-angle pin header is installed on the pin header base, and the ends of the right-angle pin header are connected to the plurality of driving circuit boards, and the power circuit board and the side wall pass through the side. The bending structure provided on the wall is connected, the side wall is provided with a side wall placement hole, the fixing plate spans between the two side walls through the side wall placement hole, and the fixing plate corresponds to the driving circuit board Positioning slots are provided at the positions, and the fixing plate and the driving circuit board are connected by clamping through the slotting slots.

Moreover, both ends of the fixing plate are provided with hook-shaped structures, the side walls are provided with positioning holes, and the hook-shaped structures are embedded in the positioning holes to realize stable connection between the fixing plate and the side walls.

Moreover, a blank area is provided at the contact position between the driving circuit board and the clamping slot, so as to avoid contact or collision between the fixing board and the components on the driving circuit board.

Also, the side wall placement hole is slightly larger than the width of the fixing plate.

Moreover, four corners of the power circuit board are provided with circuit board fixing holes, the bending structure is provided with a bending structure fixing hole corresponding to the circuit board fixing hole, and the power circuit board and the bending structure pass through the holes. Install the riveting screws into the fixing holes of the circuit board and the fixing holes of the bending structure for fixing.

Moreover, both the circuit board fixing hole and the bending structure fixing hole are slightly larger than the diameter of the riveting screw.

Moreover, the width of the slotted slot is slightly larger than the thickness of the driving circuit board.

Moreover, the fixing plate is made of ABS material.

The advantages and beneficial effects of the present utility model are:

1. The connection and fixing structure of multiple discrete circuit boards of the present invention, the power circuit board is provided with a placement hole, a pin header base is inserted in the placement hole, a right-angle pin header is installed on the pin header base, and the end of the right-angle pin header is installed. Connected to several drive circuit boards, the power circuit board is connected to the side wall through a bending structure provided on the side wall, the side wall is provided with a side wall placement hole, and the fixed board spans between the two side walls through the side wall placement hole , the fixed board is provided with a card slot at the position corresponding to the drive circuit board, and the fixed plate and the drive circuit board are connected through the card slot, which effectively ensures the connection and fixation between all the circuit boards. Fixing between the walls, the side wall becomes the only reference for installation and fixing, and the fixing plate also plays a role in connecting and fixing the two side walls, which can effectively prevent the deformation between the side walls and avoid the unbalanced force on the circuit board. Bent or damaged, improves overall stability.

2. The connection and fixing structure of a plurality of discrete circuit boards of the present invention, the two ends of the fixing board are provided with hook-shaped structures, the side walls are provided with positioning holes, and the hook-shaped structures are embedded in the positioning holes, so as to realize the connection between the fixed board and the fixed board. The stable connection of the side wall improves the connection strength and effectively prevents the deformation of the side wall.

3. In the connection and fixing structure of the multiple discrete circuit boards of the present invention, a blank area is provided at the contact position between the driving circuit board and the clamping slot, which can avoid contact or collision between the fixing board and the components on the driving circuit board.

4. In the connection and fixing structure of a plurality of discrete circuit boards of the present invention, the side wall placement hole is slightly larger than the width of the fixing plate, which is convenient for the fixing plate to span between the two side walls and does not cause the side wall placement hole to be too large. Affects the strength of the sidewall.

5. In the connection and fixing structure of multiple discrete circuit boards of the present invention, the four corners of the power circuit board are provided with circuit board fixing holes, the bending structure corresponding to the circuit board fixing holes is provided with bending structure fixing holes, and the power circuit board The bending structure is fixed by riveting screws inserted into the fixing holes of the circuit board and the fixing holes of the bending structure, so as to ensure the firmness of the connection between the power circuit board and the side wall and improve the overall stability.

6. In the connection and fixing structure of the multiple discrete circuit boards of the present invention, the fixing holes of the circuit board and the fixing holes of the bending structure are slightly larger than the diameter of the riveting screws, which can effectively avoid the fixing holes of the circuit board and the fixing holes of the bending structure due to the manufacturing process. The influence of the precision makes the installation of the riveting screw more portable, and a certain buffer space is formed between the side wall and the circuit board, so as to avoid the pressure on the side wall and the circuit board being squeezed.

7. In the connection and fixing structure of multiple discrete circuit boards of the present invention, the width of the slotted slot is slightly larger than the thickness of the driving circuit board, which can avoid the hard force generated by mechanical shaking after the fixed board is in direct contact with the driving circuit board. damage.

8. The connection and fixing structure of the multiple discrete circuit boards of the present invention, the fixing board is made of ABS material, has extremely high toughness and strength, and ensures the overall connection stability.

9. The design of the utility model is scientific and reasonable, which can effectively utilize the structural space, improve the power density, and effectively improve the portability of product debugging and maintenance.

Description of drawings

Fig. 1 is the structural representation of the utility model;

2 is a schematic structural diagram of a power circuit board of the present invention;

3 is a schematic structural diagram of a drive circuit board of the present invention;

4 is a schematic structural diagram of a fixing plate of the present invention;

Fig. 5 is the structural representation of the side wall of the utility model;

FIG. 6 is a top view of the side wall of the utility model.

Description of reference numerals

1- Power circuit board, 2- Pin header base, 3- Right angle pin header, 4- Drive circuit board, 5- Fixed plate, 6- Side wall, 7- Bending structure, 8- Riveting screw, 9- Card slot , 10-hook-shaped structure, 11-positioning hole, 12-placement hole, 13-circuit board fixing hole, 14-blank area, 15-bending structure fixing hole, 16-side wall placement hole.

Detailed ways

The present utility model will be further described in detail below through specific examples. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present utility model.

A connection and fixing structure of multiple discrete circuit boards, the innovation of which is that it includes a power circuit board 1, a plurality of driving circuit boards 4, a fixing board 5 and two symmetrically arranged side walls 6, and the power circuit board is provided with a placement Hole 12, a pin header base 2 is inserted into the placement hole, a right-angle pin header 3 is installed on the pin header base, and the end of the right-angle pin header is connected to several driving circuit boards, and the power circuit board and the side wall pass through the folds set on the side wall. The bending structure 7 is connected, the side wall is provided with a side wall placement hole 16, the fixing plate spans between the two side walls through the side wall placement hole, the fixing plate is provided with a card slot 9 at the position corresponding to the driving circuit board, and the fixing plate It is connected with the drive circuit board through the card slot, which effectively ensures the connection and fixation between all the circuit boards. All the circuit boards are all fixed to the side wall. The side wall becomes the only reference for installation and fixing The board also plays the role of connecting and fixing the two side walls, which can effectively prevent the deformation between the side walls, avoid the bending or damage caused by the unbalanced force of the circuit board, and improve the overall stability.

The two ends of the fixing plate are provided with hook-shaped structures 10, and the side walls are provided with positioning holes 11. The hook-shaped structures are embedded in the positioning holes, which realizes the stable connection between the fixing plate and the side walls, improves the connection strength, and effectively prevents the side walls. deformed.

A blank area 14 is provided at the contact position between the driving circuit board and the card slot, so as to avoid contact or collision between the fixing board and the components on the driving circuit board.

The side wall placement hole is slightly larger than the width of the fixing plate, which not only facilitates the fixing plate to span between the two side walls, but also does not affect the strength of the side wall because the side wall placement hole is too large.

The four corners of the power circuit board are provided with circuit board fixing holes 13, and the bending structure corresponding to the circuit board fixing holes is provided with a bending structure fixing hole 15. The power circuit board and the bending structure are inserted into the circuit board fixing holes and the bending structure. The riveting screws in the fixing holes are fixed to ensure the firmness of the connection between the power circuit board and the side wall and improve the overall stability.

Both the circuit board fixing hole and the bending structure fixing hole are slightly larger than the diameter of the riveting screw 8, which can effectively avoid the influence of the manufacturing process precision of the circuit board fixing hole and the bending structure fixing hole, making the installation of the riveting screw more portable, and to the side A certain buffer space is formed between the wall and the circuit board to avoid the pressure on the side wall to squeeze the circuit board.

The slot width of the card slot is slightly larger than the thickness of the driving circuit board, which can avoid the hard force damage caused by mechanical shaking after the fixed board is in direct contact with the driving circuit board.

The fixing plate is made of ABS material, which has extremely high toughness and strength to ensure the overall connection stability.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. It is possible, therefore, that the scope of the present invention is not limited to what is disclosed in the embodiments and drawings.

Claims (8)

1. A connection and fixing structure of a plurality of discrete circuit boards, characterized in that: comprising a power circuit board, a number of drive circuit boards, a fixing plate and two side walls symmetrically arranged, the power circuit board is provided with a placement hole, A pin header base is inserted into the placement hole, a right-angle pin header is installed on the pin header base, and the ends of the right-angle pin header are connected to the plurality of driving circuit boards, the power circuit board and the side wall The connection is made by a bending structure provided on the side wall, the side wall is provided with a side wall placement hole, the fixing plate spans between the two side walls through the side wall placement hole, and the fixing plate corresponds to the drive The position of the circuit board is provided with a clamping slot, and the fixing plate and the driving circuit board are connected by clamping through the clamping slot. 2 . The connection and fixing structure of multiple discrete circuit boards according to claim 1 , wherein the two ends of the fixing board are provided with hook-shaped structures, the side walls are provided with positioning holes, and the hook-shaped structures are provided on the side walls. 3 . The structure is embedded in the positioning hole to realize the stable connection between the fixing plate and the side wall. 3. The connection and fixing structure of a plurality of discrete circuit boards according to claim 1, wherein a blank area is provided at the contact position between the driving circuit board and the card slot, so as to avoid elements on the fixing board and the driving circuit board. The device is in contact or bumped. 4 . The connection and fixing structure for multiple discrete circuit boards according to claim 1 , wherein the side wall placement hole is slightly larger than the width of the fixing plate. 5 . 5 . The connection and fixing structure of multiple discrete circuit boards according to claim 1 , wherein the four corners of the power circuit board are provided with circuit board fixing holes, and the bending structure corresponds to the circuit board fixing holes. 6 . A bending structure fixing hole is provided, and the power circuit board and the bending structure are fixed by riveting screws inserted into the circuit board fixing hole and the bending structure fixing hole. 6 . The connection and fixing structure of multiple discrete circuit boards according to claim 5 , wherein the circuit board fixing holes and the bending structure fixing holes are both slightly larger than the diameter of the riveting screws. 7 . 7 . The connection and fixing structure of a plurality of discrete circuit boards according to claim 1 , wherein the slot width of the locking slot is slightly larger than the thickness of the driving circuit board. 8 . 8 . The connecting and fixing structure of a plurality of discrete circuit boards according to claim 1 , wherein the fixing plate is made of ABS material. 9 .

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