CN201115149Y - Circuit board fixing device - Google Patents

Abstract

A circuit board fixing device is used to fix a circuit board with a positioning hole and a buckle hole. The circuit board fixing device includes a base plate that constitutes a part of a computer case and at least one fixing member. The base plate is provided with a plurality of positioning posts that pass through the circuit board to position the circuit board and support the circuit board on the base plate. The fixing member is rotatably arranged on the base plate to be rotated to the top surface of the circuit board, and is buckled into the buckle hole of the circuit board with a buckling portion to fix the circuit board on the base plate, and the buckling portion can prevent the fixing member from being disengaged due to external force vibration. The fixing member of the utility model can quickly fix the circuit board as long as it needs to be turned and rotated to a predetermined position, without the need for complicated screw locking procedures. At the same time, the positioning posts passing through the positioning holes can also quickly and correctly arrange the circuit board in a predetermined installation area.

Description

Circuit Board Fixture

technical field

The utility model relates to a fixing structure of a circuit board, in particular to a circuit board fixing device for quickly fixing the circuit board on a casing, which can make the procedure of disassembling and assembling the circuit board more convenient and quick.

Background technique

With the continuous and vigorous development of technology and information, computer equipment has become a very popular electronic device. The computer equipment currently on the market, whether it is a desktop computer, a notebook computer, or a server, must be equipped with a motherboard inside, as the core component of the computer system, so that it is electrically connected to the central processing unit on the motherboard. Computer peripheral hardware such as processor (CPU), memory module, control adapter card (PCI card), etc., can smoothly execute the preset functions of the peripheral hardware.

A common way to fix the mainboard is to set several conductive copper pillars (boss) on the housing of the computer device as fixing components, and the mainboard is provided with several through holes corresponding to the copper bosses. The main board is placed on the copper pillars, and an appropriate distance is kept between the shell and the housing, and then a plurality of bolts are respectively passed through the through holes of the main board, and locked on the copper pillars, so that the main board is controlled by the copper pillars. Keep a distance between the shell and the support to avoid short circuit caused by direct contact between the solder pins on the back of the motherboard and the shell.

Using screws to fix the mainboard on the top of the copper pillars, the user has to repeatedly lock and remove the bolts one by one during the process of loading and unloading the mainboard, which is time-consuming and complicated in operation, and is not practical convenient. Moreover, current electronic devices are required to be light, thin and short. Too many copper pillars will occupy too much area of the main board, which makes it difficult to layout the circuit on the main board, and the overall size of the electronic device cannot be miniaturized.

In recent years, a thumb screw that can be directly rotated by fingers has been developed as a positioning component for fixing the motherboard. As shown in FIG. 1 , it is a schematic diagram of generally using thumb screws 50 to fix the circuit board 60 to the bottom plate 70 of the casing. The bottom plate 70 has a plurality of positioning posts 71 and a screw hole 72 , wherein each positioning post 71 has a necked section 711 in the middle. The circuit board 60 defines a plurality of coupling holes 61 corresponding to the positioning posts 71 . Each coupling hole 61 is gourd-shaped and has a wide section 611 and a narrow section 612 , and the front end of the positioning post 71 passes through the coupling hole 61 through the wide section 611 . In this way, the circuit board 60 can slide on the bottom plate 70 by the positioning post 71 , so that the narrow section 612 of the coupling hole 61 fits into the necked section 611 of the positioning post 61 . Afterwards, as long as the thumb screws 50 pass through the circuit board 60 and screw into the screw holes 72 , the circuit board 60 can be fixed on the base plate 70 .

The method of locking the circuit board with thumb screws greatly reduces the number of copper pillars used, and solves the problem caused by locking and fixing the motherboard with copper pillars. However, using thumb screws to fix the main board is still a screw locking method. The process of loading and unloading the main board is complicated and takes too long. The cost of thumb screws is also higher than the price of traditional bolts, resulting in lower manufacturing costs. Increase.

How to truly fix the installation position of the mainboard in a screwless manner and facilitate the user to quickly and conveniently assemble and disassemble the mainboard are problems that technicians in related fields are eager to overcome.

Contents of the invention

Most of the circuit boards of electronic devices in the prior art are positioned on the casing by screws, which is time-consuming and laborious and requires tools to be used. Although the thumb screw does not need to be equipped with tools, it is still time-consuming and labor-intensive and the cost is high.

In view of this, the purpose of the present invention is to provide a circuit board fixing device, which does not require tools to operate and can quickly install or disassemble the circuit board.

In order to achieve the above object, it is to provide a circuit board fixing device for fixing a circuit board with positioning holes and button holes. The circuit board fixing device includes a bottom plate constituting a part of the computer casing and at least one fixing piece. Several positioning columns are arranged on the base plate for passing through the circuit board to locate the circuit board and support the circuit board on the base plate. The fixing part is rotatably arranged on the bottom plate, so as to be rotated to the top surface of the circuit board, and is buckled into the button hole of the circuit board with a buckle part to fix the circuit board on the bottom plate, and the buckle part can avoid The fixing part is detached due to external force vibration.

The effect of the utility model is that as long as the fixing part needs to be moved to a predetermined position, the circuit board effect can be quickly fixed without complicated screw lock procedures, and at the same time, the positioning column can pass through the positioning hole quickly and accurately Arrange the circuit board in the predetermined installation area.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 is an exploded perspective view of a fixed motherboard positioning assembly in the prior art;

Fig. 2 is the exploded perspective view of the utility model embodiment;

Fig. 3 is the perspective view of the utility model embodiment;

Fig. 4 and Fig. 5 are the three-dimensional views of the fixing part in the embodiment of the present utility model;

6A and 6B are partially enlarged views of the embodiment of the present invention, revealing that the fixing member is not fastened to the circuit board;

7A and 7B are partially enlarged views of the embodiment of the present invention, revealing that the fixing member rotates toward the upper side of the circuit board;

8A and 8B are partially enlarged views of the embodiment of the present invention, revealing that the fixing member is buckled on the circuit board; and

FIG. 9 is a schematic partial cross-sectional view of an embodiment of the present invention, showing that the fixing member is fastened to the circuit board.

Among them, reference signs

10 bottom plate

11 positioning column

12 Supports

13 fixed shaft sleeve

20 Fixing parts

21 shaft hole

22 buckle part

23 stopper

24 paddles

30 circuit boards

31 positioning hole

32 buttonholes

41 shaft

50 thumb screws

60 circuit board

70 base plate

71 positioning column

72 screw holes

711 Neck constriction

61 binding holes

611 wide section

612 narrow section

Detailed ways

In order to have a further understanding of the purpose, structure, features, and functions of the present utility model, the detailed description is as follows in conjunction with the embodiments.

Please refer to FIG. 2 and FIG. 3 , which is a circuit board fixing device disclosed by an embodiment of the present invention, which is used to quickly fix a circuit board 30 . The circuit board fixing device comprises a bottom plate 10 and several fixing pieces 20, wherein the bottom plate 10 is used to support the circuit board 30 on it, and each fixing piece 20 is rotatably arranged on the bottom plate 10, and the setting position of the fixing piece 20 corresponds to sides of the circuit board 30. After being rotated, the fixing member 20 is buckled on the top surface of the circuit board 30 to fix the circuit board on the bottom board 10 .

Please refer to FIG. 2 and FIG. 3 again, the bottom plate 10 can be an independent component fixed inside the computer case, or a part of the computer case. The circuit board 30 has several positioning holes 31 and several button holes 32 . Several positioning pillars 11 , several support members 12 and several fixed bushings 13 are disposed on the bottom plate 10 . The positioning post 11 is disposed on the base plate 10 for passing through the positioning hole 31 of the circuit board 30 to position the circuit board 30 so that the circuit board 30 is placed and fixed on the correct position of the base plate 10 . Generally speaking, fixing the circuit board 30 on the bottom plate 10 includes fixing the horizontal position of the circuit board 30 on the bottom plate 10 and preventing the circuit board 30 from rotating along its normal line. Therefore, the number of positioning posts 11 is at least two, Corresponding to two positioning holes 31, but the number is not limited thereto. When the circuit board 30 is placed on the base plate 10, and each positioning column 11 passes through its corresponding positioning hole 31, the circuit board 30 can be fixed in the horizontal direction so that the circuit board 30 will not move horizontally on the base plate 10. .

Referring again to Fig. 2 and shown in Fig. 3, support member 12 is arranged on base plate 10, in order to contact the bottom surface of circuit board 30, supports circuit board 30 on base plate 10, and makes circuit board 30 interval base plate 10 a distance and can not mutual touch. The supporting member 12 is used to prevent the solder joints or metal lines on the bottom surface of the circuit board 30 from contacting the bottom plate to cause a short circuit. Therefore, the material for making the supporting member 12 is preferably an insulating material, such as rubber or foam, but it can also be made of metal. As long as the position where the supporting member 12 is in contact with the circuit board 30 is selected, the supporting member 12 is prevented from contacting solder joints or metal lines.

As shown in Fig. 3, Fig. 4 and Fig. 5, the fixing member 20 is long and flat, and has a shaft hole 21 for a shaft rod 41 to pass through and inserted into the fixed shaft sleeve 13 of the base plate 10, so as to The fixing member 20 is rotatably disposed on the bottom plate 10 . The fixing member 20 further has a buckling portion 22 , a stop portion 23 , and a pick piece 24 . The buckling portion 22 is a protrusion protruding from the bottom surface of the fixing member 20 and close to the front end of the fixing member 20 . The buckling portion 22 is used to buckle into the buckle hole 32 of the circuit board 30 so that the fixing member 20 is buckled on the circuit board 30 so that the circuit board 30 will not move away from the bottom board 10 . The stop part 23 is an elastic piece protruding from the bottom surface of the fixing member 20, and is used to elastically stop the side edge of the circuit board 30 when the buckle part 22 is buckled in the button hole 32, so that the circuit board 30 is firmly held The fixed position will not shake in the horizontal direction due to the tolerance between the positioning hole 31 and the positioning post 11 . The pick piece 24 protrudes from the top surface of the fixing member 20 for the user's finger to move to rotate the fixing member 20 . In this embodiment, each side of the circuit board 30 has a plurality of fixing parts 20 corresponding thereto, so that the circuit board is firmly fixed on the base plate 10 . However, in fact, since the positioning column 11 of the base plate 10 has passed through the positioning hole 31 of the circuit board 30, the fixing effect in the horizontal direction has been exerted, so the number of the fixing member 20 is only one, and the displacement of the circuit board 30 away from the base plate 10 is limited. Can.

6A and 6B, if the projected area of the circuit board 30 on the base plate 10 is defined as an installation area, then the positioning column 11 is arranged in the installation area, but its position is not limited, it only needs to be aligned with the circuit board. The positioning holes 31 of 30 correspond to each other. Supports 12 are also distributed in the installation area. The positioning sleeve 13 is then positioned at the outside of the edge of the installation area, so that the fixing member 20 is rotatably arranged on the outside of the installation area, and can be turned away from the top of the installation area (or circuit board 30), presenting a connection with the edge of the circuit board 30. The parallel state is used for installing or removing the circuit board 30 .

Referring to FIGS. 7A and 7B , when the circuit board 30 is placed on the bottom plate 10 and the positioning posts 11 of the bottom plate 10 pass through the positioning holes 31 of the circuit board 30 , the circuit board 30 is placed in the installation area. Then use the plectrum 24 to rotate the fixing member 20, so that the free end of the fixing member 20 faces above the circuit board 30, so that the buckle 22 moves toward the button hole 32 of the circuit board 30, and also allows the stopper 23 to move toward the circuit board 30 edge against.

Referring to Fig. 8A, Fig. 8B and Fig. 9, when the fixing part 20 is rotated to the top of the circuit board 30, the fixing part 20 is pressed on the top surface of the circuit board 30, so as to fix the circuit board 30 so that the circuit board 30 will not come off Bottom plate 10 . The fastening portion 22 of the fixing member 20 is also buckled into the button hole 32 of the circuit board 30 to fix the fixing member 20 on the top surface of the circuit board 30 . The stop portion 23 elastically stops the side edge of the circuit board 30 , so that the circuit board 30 is firmly fixed and will not shake in the horizontal direction due to the tolerance between the positioning hole 31 and the positioning post 11 .

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (8)

1. A circuit board fixing device for fixing a circuit board, characterized in that the circuit board fixing device comprises: a base plate on which the circuit board is supported, and a plurality of positioning posts are provided on the base plate to pass through the circuit board to position the circuit board; and At least one fixing part is rotatably arranged on the bottom plate and buckled on a top surface of the circuit board. 2. The circuit board fixing device according to claim 1, characterized in that, the position of the fixing member corresponds to one side of the circuit board. 3. The circuit board fixing device according to claim 1, wherein the base plate has a plurality of support members contacting the bottom surface of the circuit board to support the circuit board on the base plate. 4. The circuit board fixing device according to claim 1, wherein the fixing member has a shaft hole for a shaft to pass through and be inserted into the bottom plate. 5 . The circuit board fixing device according to claim 4 , wherein the base plate has a fixed sleeve disposed on the base plate, and the shaft rod is inserted into the fixed sleeve through the shaft hole of the fixing member. 6 . The circuit board fixing device according to claim 1 , wherein the fixing member has a buckling portion protruding from a bottom surface of the fixing member for being buckled into a buckle hole of the circuit board. 7 . The circuit board fixing device according to claim 1 , wherein the fixing member has a stop portion protruding from the bottom surface of the fixing member for elastically stopping one side of the circuit board. 8. The circuit board fixing device according to claim 1, characterized in that the fixing part has a pick protruding from a top surface of the fixing part, so that the user's fingers can flip the fixing part to rotate the fixing part .

Images