CN1256008C - Circuit board fixtures and information processing devices - Google Patents

Abstract

A circuit board fixture, comprising: one end of the mounting column is fixed on the circuit board, and a groove is arranged on the mounting column; a holding device fixedly arranged on the surface of a shell of an information processing device, wherein the holding device is provided with a long and narrow hole, and the long and narrow hole is provided with an open end; the groove of the mounting post is engaged in the slot of the holding device. The fixing device can be provided with a stopping device which is fixedly arranged on the shell to prevent the circuit board from sliding out. The invention has the advantages of simple structure, easy assembly and convenient plugging and dismounting. The invention also relates to an information processing device with the fixing device.

Description

Circuit board fixtures and information processing devices

technical field

The present invention relates to a fixing device of a circuit board and an information processing device, in particular to a fixing device of a circuit board of an information processing device such as a server or a computer.

Background technique

Please refer to FIG. 1A, which is a three-dimensional exploded view of an existing information processing device 10 (such as a server or computer), which has an outer cover 12, a main board (circuit board) 14 and a housing 16. In order to fix the motherboard 14 to the casing 16 , a plurality of cylinders 16 a are generally disposed on the bottom surface of the casing 16 , and a plurality of corresponding through holes 14 a are defined on the motherboard 14 . As shown in FIG. 1B, a screw hole is formed in the center of the cylinder 16a, and it has a smaller diameter portion, which can just fit into the through hole 14a. In this way, the motherboard 14 can be fixed to the casing 16 by locking the corresponding screws 18 to the screw holes of the cylinder 16 a.

The above-mentioned existing installation method has many disadvantages: since the fixing of the motherboard 14 is achieved by locking a plurality of screws 18, it not only consumes assembly man-hours and assembly costs, but is also very difficult to disassemble. When the user needs to disassemble the main board 14 from the housing 16 , all the screws 18 need to be removed first, and then the main board 14 needs to be lifted up vertically so that the through hole 14 a is separated from the cylinder 16 a. Although this lifting action is generally not difficult to achieve in smaller information processing devices 10 such as personal computers, however, in the case of such as servers or other larger information processing devices, the motherboard 14 usually carries It is very heavy, so the user cannot lift the motherboard 14 easily. Furthermore, some servers are installed on the rack for a long time, and the existing main board fixing method is very inconvenient for the user to directly disassemble the main board 14 from the rack. In addition, when locking or removing screws, if the screws are accidentally dropped on the main board, there is also the concern of causing a short circuit.

Therefore, it is really necessary to develop a circuit board fixing technology with simple structure, easy assembly, and convenient plug-in and disassembly, so as to improve the above-mentioned shortcomings of the existing devices.

Contents of the invention

The object of the present invention is to provide a circuit board fixing device and an information processing device, which can quickly fix the circuit board to the housing of the information processing device or remove the circuit board from the housing without locking screws. Disassemble.

Another object of the present invention is to provide a circuit board fixing device, which has a simple structure, low cost, and has the effect of preventing electromagnetic interference (EMI).

Another object of the present invention is to provide a circuit board fixing device, which can fix other parts on the same position of the circuit board fixing device on the circuit board, so that the space of the circuit board can be used more efficiently.

In order to achieve the above object, a fixing device for a circuit board comprises:

a mounting column, one end of which is fixed on the circuit board, and a groove is provided on the mounting column;

A holding device, fixedly arranged on a surface of a housing of an information processing device, the holding device is provided with a long and narrow hole, and the long and narrow hole has an open end, and the long and narrow hole is matched with the groove, so that the mounting column is clamped fit in the holding device, insert and fix the circuit board into the housing, and

A stopping device is fixed on the casing to prevent the circuit board from sliding out.

Another aspect of the present invention provides an information processing device, including:

a circuit board;

a plurality of mounting posts, one end of which is fixedly connected to the circuit board, and a groove is provided on each mounting post;

A casing, a plurality of holding devices are arranged on its surface, the holding device is provided with a long and narrow hole, and the long and narrow hole has an open end, and the long and narrow hole is matched with the groove, so that the mounting column is engaged with the holding device inserting and fixing the circuit board into the housing;

A stopping device, arranged on the surface of the casing of the information processing device, the stopping device moves between a first position and a second position, when the stopping device is in the first position, it can prevent the circuit board from Moving out of the casing along a direction parallel to the surface, the stopper device can allow the circuit board to move out of the casing along a direction parallel to the surface when the stopper is located at the second position.

Therefore, the fixing device of the circuit board of the present invention does not need complex screw locking action when the circuit board is disassembled, which can avoid the short circuit of the circuit board caused by the falling of the screw, and does not need to lift the circuit board in the vertical direction, only The circuit board needs to be pulled out or inserted in a horizontal direction to achieve rapid assembly.

In the circuit board fixing device of the present invention, the housing, the holding device and the mounting column can all be made of metal materials. Therefore, the circuit board can be electrically grounded to the metal casing via the mounting post and the holding device, thereby effectively suppressing electromagnetic interference.

The circuit board fixing device of the present invention is provided with a through hole on the circuit board, one end of the mounting post is welded to the through hole by surface mount technology (SMT), and the center of the mounting post is set as a screw hole. Therefore, the screw hole can be used to lock other components on the circuit board, so that the space of the circuit board can be used more efficiently.

In summary, the circuit board fixing device of the present invention has the advantages of:

The circuit board fixing device of the present invention does not need to lock screws, and can quickly fix the circuit board to the housing of the information processing device or disassemble the circuit board from the housing.

The circuit board fixing device of the present invention has simple structure, low cost, and has the effect of preventing electromagnetic interference (EMI, electromagnetic interference).

The circuit board fixing device of the present invention can fix other parts on the same position of the circuit board fixing device on the circuit board, so that the space of the circuit board can be used more efficiently.

Description of drawings

In order to further understand the structure, features and advantages of the present invention, preferred embodiments are described in detail with accompanying drawings. In the attached picture:

FIG. 1A is an exploded schematic diagram of an existing information processing device;

Figure 1B is a partially enlarged view of Figure 1A;

Fig. 2 is the preferred embodiment of the fixing device of the circuit board of the present invention;

3 is an enlarged perspective view of the mounting column and the holding device of the present invention;

Fig. 4 is a cross-sectional view when the mounting column is snapped into the holding device;

Fig. 5 is a cross-sectional view when the mounting column is snapped into the holding device and the movable rod is at the first position;

Figure 6 is a perspective view of another embodiment of the holding device of the present invention;

Detailed ways

The preferred embodiment of the present invention is described in detail below with reference to Fig. 2 to Fig. 6:

The circuit board fixing device of the present invention mainly includes a mounting post 28 , a holding device 32 and a stop device 34 . In the preferred embodiment of the fixing device of the circuit board of the present invention shown in FIG. 2, the circuit board 24 is provided with a plurality of through holes 30, and the number and arrangement positions of the through holes 30 can be appropriately determined according to the circuit layout of the circuit board 24. . One end of the mounting post 28 made of metal material can be inserted into the through hole 30 , and it is soldered and fixed to the circuit board 24 by surface mount technology (SMT). The man-hours required for this SMT soldering process are extremely short, which can reduce the time and cost of assembly. The holding device 32 is formed by stamping the bottom surface of the metal housing 26 . The stopping device 34 is disposed on the bottom of the housing 26 near the opening, and can be fixed to the housing 26 by, for example, spot welding, locking or other methods.

FIG. 3 is an enlarged perspective view of the mounting column 28 and the holding device 32 of the present invention. The mounting post 28 is roughly cylindrical and has a groove 281 around it, and its upper end can be inserted into the through hole 30 on the circuit board 24 and soldered to the lower surface of the circuit board 24 . In addition, the central portion of the mounting post 28 can be tapped to form a threaded hole 282 . The retaining device 32 protrudes from the bottom surface of the housing 36 and defines a long and narrow hole 321 , one end of the long and narrow hole 321 opens to the opening 332 . The width of the opening 332 is slightly larger than that of the mounting post 28 and the width of the slit hole just fits with the groove 281 of the mounting post 28 . In this way, the mounting post 28 can slide into the holding device 32 from the end of the opening 322 in the horizontal direction, so that the groove 281 is engaged in the elongated hole 321 . Therefore, the circuit board fixed together with the mounting post 28 can be inserted and fixed on the housing 26 in the horizontal direction. FIG. 4 is a cross-sectional view of the mounting post 28 snapped into the retaining device 32 . Since the mounting posts 28 are provided with screw holes 282 , there are several mounting holes on the circuit board 24 for installing other components, so that the space on the circuit board 24 can be fully utilized.

After the circuit board 24 is inserted into the housing 26, in order to prevent the mounting post 28 from accidentally sliding out of the opening 322 of the holding device 32, the present invention is provided with at least one stop device 34 on the side close to the opening to block the circuit board. 24 moves. Referring to FIG. 5 , the stopping device 34 is composed of a housing 341 , a spring 343 wrapped in the housing, and a movable rod 342 . One end of the movable rod 342 is provided with a flange portion, and the flange portion is wrapped in the housing 341 and supported by the spring 343 . Thereby, when no force is applied to the movable rod 341, the movable rod 341 is in a higher first position to block the circuit board 24 and prevent it from slipping out accidentally; , the movable rod 341 then moves to a lower second position, at which time the circuit board 24 will no longer be blocked, so the user can freely insert or withdraw the circuit board 24 in the horizontal direction.

Fig. 6 is a perspective view of another embodiment of the holding device of the present invention. The holding device 32' of this embodiment is also formed by stamping the metal shell 26, and its main structure is similar to the holding device 32 of Fig. 3, and also has a long and narrow hole 321' and an opening 322'. The present invention not only simplifies the installation of the circuit board The fixing device makes the plugging and unplugging of the circuit board more rapid and convenient, and, since the housing 26, the holding device 32 and the mounting column 28 are all made of metal materials, the circuit board 24 can be installed via the mounting column 28 and the holding device 32. It is electrically grounded to the metal shell 26 to effectively prevent EMT.

Although the present invention has been described with reference to preferred embodiments and accompanying drawings, the above description should be regarded as illustrative rather than restrictive, and changes and modifications made by those skilled in the art according to the spirit of the present invention shall belong to the present invention scope of protection.

Claims (16)

1. A fixing device for a circuit board, characterized in that the fixing device comprises: a mounting column, one end of which is fixed on the circuit board, and a groove is provided on the mounting column; A holding device, fixedly arranged on a surface of a housing of an information processing device, the holding device is provided with a long and narrow hole, and the long and narrow hole has an open end, and the long and narrow hole is matched with the groove, so that the mounting column is clamped fit in the holding device, insert and fix the circuit board into the housing, and A stopping device is fixed on the casing to prevent the circuit board from sliding out. 2. The circuit board fixing device as claimed in claim 1, wherein the housing, the holding device, and the mounting post are made of metal materials. 3. The circuit board fixing device as claimed in claim 1, wherein the holding device is integrally formed with the housing. 4. The circuit board fixing device according to claim 1, wherein the stopper device comprises a housing, a spring wrapped in the housing, and a movable rod, and one end of the movable rod is provided with a flange portion , the flange part is wrapped in the shell and supported by the spring. 5 . The circuit board fixing device according to claim 1 , wherein a through hole is formed on the circuit board, and one end of the mounting post is attached to the through hole. 6 . The circuit board fixing device according to claim 2 , wherein the retaining device is integrally stamped and formed by the housing. 7 . 7 . The circuit board fixing device as claimed in claim 5 , wherein a screw hole is formed in the center of the mounting post. 8 . 8. The fixing device of circuit board as claimed in claim 1, characterized in that, the stop device is arranged on the surface of the housing of the information processing device, and the stop device is in a first position and a second position When the stop device is in the first position, it can prevent the circuit board from moving out of the housing along the direction parallel to the surface. When the stop device is in the second position, it can allow the circuit board to move along the direction parallel to the surface. The direction of the surface moves out of the housing. 9. The circuit board fixing device as claimed in claim 8, wherein the housing, the holding device and the mounting post are made of metal materials. 10 . The circuit board fixing device according to claim 8 , wherein a through hole is formed on the circuit board, and one end of the mounting post is attached to the through hole. 11 . 11. The circuit board fixing device as claimed in claim 9, wherein the retaining device is integrally punched and formed by the housing. 12 . The circuit board fixing device as claimed in claim 10 , wherein a screw hole is formed in the center of the mounting post. 13 . 13. An information processing device, characterized in that: a circuit board; A plurality of mounting posts, one end of which is fixedly connected to the circuit board, and a groove is provided on the mounting posts; A shell, a plurality of retaining devices are arranged on its surface, the retaining device is provided with a long and narrow hole, and the long and narrow hole has an open end, so that the long and narrow holes can cooperate with the groove, and the mounting column can be engaged in the retaining device, so that The circuit board is inserted and fixed in the casing; A stopping device is arranged on the surface of the housing of the information processing device, the stopping device moves between a first position and a second position, and when the stopping device is in the first position, it can prevent the circuit board from moving along the The housing is moved out of the housing along a direction parallel to the surface, and when the stopper is located at the second position, the circuit board is allowed to move out of the housing along a direction parallel to the surface. 14. The information processing device as claimed in claim 13, wherein a through hole is formed on the circuit board, and one end of the mounting post is attached to the through hole. 15. The information processing device as claimed in claim 14, wherein a screw hole is provided at the center of the mounting column. 16. The information processing device as claimed in claim 13, wherein the casing, the retaining device, and the mounting post are made of metal materials.

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