TWI841487B - Expansion card - Google Patents

Abstract

An expansion card includes a circuit board body, two elastic sheets and a plurality of connection structures. The circuit board body includes a body portion and a hook connection portion. The hook connection portion has a connection area and a hook area. The connection area is located between the body portion and the hook area. The hook area extends outward from one side of the body portion. The elastic sheets are disposed on the hook connection portion of the circuit board body, and covers a first surface and a second surface of the hook connection portion opposite to each other. The connection structures pass through the elastic sheets and the hook connection portion, and is located in the hook area. The elastic sheets and the circuit board body are fixed through the connecting structures.

Description

Expansion Card

The present invention relates to a board card, and in particular to an expansion card.

Existing graphics cards are getting heavier after assembly. When users use them, they are affected by external forces or stress, which can easily cause the hooks (or small ears) next to the gold fingers to break and nearby memory chips to break, which in turn causes the entire graphics card to be scrapped.

The present invention provides an expansion card having better structural reliability.

The expansion card of the present invention includes a circuit board body, two elastic sheets and a plurality of connection structures. The circuit board body includes a main body and a hook connection part. The hook connection part has a connection area and a hook area. The connection area is located between the main body and the hook area. The hook area extends outward from one side of the main body. The elastic sheet is arranged on the hook connection part of the circuit board body and covers a first surface and a second surface of the hook connection part that are opposite to each other. The connection structure penetrates the elastic sheet and the hook connection part and is located in the hook area. The elastic sheet and the circuit board body are fixed through the connection structure.

In one embodiment of the present invention, the material of each of the above-mentioned elastic sheets includes gold, silver, copper, iron, aluminum, tin, nickel, lead, zinc or alloys of the above-mentioned metals.

In one embodiment of the present invention, each of the above-mentioned connection structures includes a through hole and a connection material. The through hole penetrates the elastic sheet and the hook connection portion, and the connection material fills the through hole to connect the elastic sheet and the circuit board.

In one embodiment of the present invention, the above-mentioned connecting material includes tin, lead or resin.

In one embodiment of the present invention, the aperture of the through hole is a certain value, or the aperture of the through hole gradually decreases from one of the two elastic sheets to the other of the two elastic sheets.

In one embodiment of the present invention, the expansion card further includes two solder resist layers, covering an upper surface and a lower surface of the main body of the circuit board body that are opposite to each other, an elastic sheet, and a connection structure.

In one embodiment of the present invention, the connection area of the hook connection part and the connection part of the main body are arc surfaces.

In one embodiment of the present invention, each of the elastic sheets and the hook connection portion are arranged conformally.

In one embodiment of the present invention, the above-mentioned circuit board body further includes a connection interface, which is arranged on the side of the main body, and there is a notch between the hook connection part.

In one embodiment of the present invention, the hook area of the hook connection portion is an area without circuit layout.

Based on the above, in the design of the expansion card of the present invention, the elastic sheet is arranged on the hook connection part of the circuit board body and covers the first surface and the second surface of the hook connection part opposite to each other, and the connection structure located in the hook area penetrates the elastic sheet and the hook connection part to fix the elastic sheet and the circuit board body. With this design, the structural strength of the hook connection part of the circuit board body can be increased, and the stability of the hook area of the hook connection part when the subsequent buckle fastener is fastened can be improved, which can effectively improve the quality of the expansion card. In short, the expansion card of the present invention can have better structural reliability.

In order to make the above features and advantages of the present invention more clearly understood, the following is a detailed description of the embodiments with the accompanying drawings.

100a, 100b: Expansion card

110: Circuit board

112: Headquarters

114: Hook connection part

115: Connection area

117: Kagou District

118: Connection interface

120, 130: elastic sheet

140a, 140b: connection structure

142a, 142b: Through hole

144:Connection materials

150, 160: solder mask

170: Processor

180: Chip

A1: Upper surface

A2: Lower surface

C: Connection point

E: One side

S1: First surface

S2: Second surface

T: Notch

Figure 1 is a three-dimensional top view schematic diagram of an expansion card according to an embodiment of the present invention.

Figure 2 is a partial exploded schematic diagram of the expansion card in Figure 1.

Figure 3 is a partial top view of the expansion card in Figure 1.

Figure 4 is a partial cross-sectional schematic diagram of the expansion card in Figure 1.

Figure 5 is a partial cross-sectional schematic diagram of an expansion card according to another embodiment of the present invention.

The embodiments of the present invention can be understood together with the drawings, and the drawings of the present invention are also considered as part of the disclosure. It should be understood that the drawings of the present invention are not drawn to scale. In fact, the size of the components may be arbitrarily enlarged or reduced in order to clearly show the features of the present invention.

FIG1 is a schematic diagram of a three-dimensional top view of an expansion card according to an embodiment of the present invention. FIG2 is a schematic diagram of a partial exploded view of the expansion card of FIG1. FIG3 is a schematic diagram of a partial top view of the expansion card of FIG1. FIG4 is a schematic diagram of a partial cross-section of the expansion card of FIG1.

Please refer to FIG. 1, FIG. 2, FIG. 3 and FIG. 4 simultaneously. In this embodiment, the expansion card 100a includes a circuit board body 110, two elastic sheets 120, 130 and a plurality of connection structures 140a. The circuit board body 110 includes a main body 112 and a hook connection portion 114. The hook connection portion 114 has a connection area 115 and a hook area 117. The connection area 115 is located between the main body 112 and the hook area 117. The hook area 117 extends outward from a side E of the main body 112. The elastic sheets 120, 130 are disposed on the hook connection portion 114 of the circuit board body 110, and cover a first surface S1 and a second surface S2 of the hook connection portion 114 that are opposite to each other. The connection structure 140a penetrates the elastic sheets 120, 130 and the hook connection portion 114 and is located in the hook area 117. The elastic sheets 120, 130 and the circuit board 110 are fixed through the connection structure 140a.

Specifically, in this embodiment, the expansion card 100a is, for example, a display card, but is not limited thereto. The circuit board body 110 is, for example, an inner structural layer of a printed circuit board, wherein the main body 112 and the connection area 115 of the hook connection part 114 are areas with a circuit layout, and the hook area 117 of the hook connection part 114 is an area without a circuit layout. Furthermore, the circuit board body 110 of this embodiment further includes a connection interface 118, which is disposed on one side E of the main body 112, and there is a notch T between the hook connection part 114. Here, the connection interface 118 is, for example, a gold finger, and the expansion card 100a can be inserted into a connector (not shown) through the connection interface 118.

Please refer to FIG. 1 and FIG. 2 at the same time. In this embodiment, the connection area 115 of the hook connection part 114 and the connection point C of the main body 112 are arc surfaces, which can effectively disperse stress. Here, the elastic sheets 120, 130 and the hook connection part 114 are specifically arranged conformally, that is, the elastic sheets 120, 130 and the hook connection part 114 have the same shape. In one embodiment, the material of the elastic sheets 120, 130 can be, for example, gold, silver, copper, iron, aluminum, tin, nickel, lead, zinc or alloys of the above metals.

Next, please refer to FIG. 3 and FIG. 4 at the same time. In this embodiment, each connection structure 140a includes a through hole 142a and a connection material 144. The through hole 142a penetrates the elastic sheets 120, 130 and the hook connection portion 114 of the circuit board body 110, and the connection material 144 fills the through hole 142a to connect the elastic sheets 120, 130 and the circuit board body 110. Here, the aperture of the through hole 142a is, for example, a certain value, but is not limited thereto. In another embodiment, please refer to FIG. 5. In the structure of the expansion card 100b, the aperture of the through hole 142b of the connection structure 140b can be gradually reduced from the elastic sheet 120 to the elastic sheet 130. In an embodiment not shown, the hole diameter of the through hole of the connection structure may gradually increase from one of the two elastic sheets to the other of the two elastic sheets; or, the hole diameter of the through hole of the connection structure in the two elastic sheets is larger than the hole diameter in the circuit board body, all of which belong to the scope of protection of the present invention.

Furthermore, the connection material 144 of the connection structure 140a may be, for example, tin, lead or resin. In one embodiment, when the connection material 144 is a metal material, such as tin or lead, the connection structure 140a only has a fixing function, which can enhance the structural strength of the hook connection portion 114. In another embodiment, when the connection material 144 is a resin, the connection structure 140a may have a heat dissipation function.

In addition, please refer to Figures 1 and 4 at the same time. The expansion card 100a of this embodiment also includes two solder resist layers 150 and 160, covering an upper surface A1 and a lower surface A2 of the main body 112 of the circuit board 110, elastic sheets 120, 130 and a connecting structure 140a, to protect the circuit board 110, the elastic sheets 120, 130 and the connecting structure 140a. In addition, the expansion card 100a of this embodiment also includes a processor 170 and a plurality of chips 180, wherein the processor 170 and the chip 180 are disposed on the main body 112 of the circuit board 110, and the chip 180 is located next to the processor 170. Here, the processor 170 may be, for example, a central processing unit, and the chip 180 may be, for example, a memory chip, but is not limited thereto.

Since the expansion cards 100a and 100b of this embodiment are provided with elastic sheets 120 and 130 on the hook connection portion 114 of the circuit board body 110, and the elastic sheets 120 and 130 are connected to the circuit board body 110 through the connection structures 140a and 140b located in the hook area 117, the structural strength of the hook connection portion 114 can be increased to prevent the hook connection portion 114 from breaking and the chip 180 nearby from being damaged, thereby improving the quality of the expansion cards 100a and 100b. In addition, through the above design, when the hook area 117 of the hook connection portion 114 is subsequently buckled with a fastener, it can have better stability. In short, the expansion cards 100a and 100b of this embodiment can have better structural reliability.

In summary, in the design of the expansion card of the present invention, the elastic sheet is disposed on the hook connection portion of the circuit board body and covers the first surface and the second surface of the hook connection portion that are opposite to each other, and the connection structure located in the hook area penetrates the elastic sheet and the hook connection portion to fix the elastic sheet and the circuit board body. With this design, the structural strength of the hook connection portion of the circuit board body can be increased, and the stability of the hook area of the hook connection portion when the subsequent buckle fastener is fastened can be improved, which can effectively improve the quality of the expansion card. In short, the expansion card of the present invention can have better structural reliability.

Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the attached patent application.

110: Circuit board

114: Hook connection part

115: Connection area

117: Kagou District

120, 130: elastic sheet

C: Connection point

S1: First surface

S2: Second surface

Claims (10)

An expansion card includes: A circuit board body, including a main body and a hook connection part, the hook connection part has a connection area and a hook area, the connection area is located between the main body and the hook area, and the hook area extends outward from one side of the main body; Two elastic sheets, arranged on the hook connection part of the circuit board body, and covering a first surface and a second surface of the hook connection part opposite to each other; and A plurality of connection structures, penetrating the elastic sheets and the hook connection part, and located in the hook area, the elastic sheets and the circuit board body are fixed through the connection structures. As described in claim 1, the material of each elastic sheet includes gold, silver, copper, iron, aluminum, tin, nickel, lead, zinc or alloys of the above metals. As described in claim 1, each of the connection structures includes a through hole and a connection material, the through hole penetrates the elastic sheets and the hook connection portion, and the connection material fills the through hole to connect the elastic sheets and the circuit board. An expansion card as described in claim 3, wherein the connecting material includes tin, lead or resin. As described in claim 3, the diameter of the through hole is a certain value, or the diameter of the through hole gradually decreases from one of the elastic sheets to another of the elastic sheets. The expansion card as described in claim 1 further includes: Two solder resist layers covering an upper surface and a lower surface of the main body of the circuit board body that are opposite to each other, the elastic sheets, and the connection structures. As described in claim 1, the expansion card, wherein the connection area of the card hook connecting portion and the connection point of the main body is an arc surface. As described in claim 7, the expansion card, wherein each of the elastic sheets and the card hook connection portion are arranged in a conformal manner. As described in claim 1, the expansion card, wherein the circuit board body further includes a connection interface, which is configured on the side of the main body and has a notch between the interface and the card hook connection portion. As described in claim 1, the card hook area of the card hook connection portion is an area without circuit layout.

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