TWI846513B - Circuit board assembly - Google Patents

Abstract

A circuit board assembly is configured for an expansion card to be installed thereon. The circuit board assembly includes a circuit board, an electrical connector, a plurality of positioning components and an engagement component. The electrical connector is disposed on the circuit board and configured for the expansion card to be installed thereon. The positioning components are fixed on the circuit board, and the positioning components are spaced apart from the electrical connector by different distances. The engagement components are removably and slidably mounted to one of the positioning components so as to be located close to or away from the electrical connector, and the engagement component is configured to fix the expansion card to the electrical connector.

Description

Circuit board assembly

The present invention relates to a circuit board assembly.

Currently, electronic devices can be equipped with expansion cards (such as memory) according to needs to enhance the performance of electronic devices. For memory, there are many different specifications of memory on the market, and the lengths of these different specifications of memory are not the same. However, the current configuration of screws used to fix the memory and the corresponding screw holes on the motherboard are only suitable for fixing longer memory. When fixing a shorter memory to the motherboard, it is necessary to additionally assemble the adapter to the shorter memory so that the total length of the shorter memory and the adapter is equal to the length of the longer memory, so that the screws can fix the adapter together with the shorter memory to the motherboard. However, this is quite inconvenient in the operation of fixing the expansion card and also leads to the problem of increased cost. Therefore, researchers in this field are currently working hard to solve the above-mentioned problems.

The present invention provides a circuit board assembly that can conveniently fix memories of different lengths on a motherboard and save costs.

A circuit board assembly disclosed in an embodiment of the present invention is used for an expansion card assembly, comprising a circuit board, an electrical connector, a plurality of positioning members and a clamping member. The electrical connector is disposed on the circuit board and is used for the expansion card assembly. The positioning members are fixed to the circuit board, and the distances between the positioning members and the electrical connector are different. The clamping member is detachably and slidably assembled on one of the positioning members, and can be relatively close to or far away from the electrical connector, and the clamping member is used to fix the expansion card to the electrical connector.

According to the circuit board assembly disclosed in the above embodiment, the positioning members are fixed to the circuit board and have different distances from the electrical connector, and the clamping member is detachably and slidably assembled on one of the positioning members so as to be relatively close to or far away from the electrical connector. The user can fix the expansion card by sliding the clamping member to the corresponding positioning member according to the length of the expansion card to be installed, so that the user can fix expansion cards of different lengths. In addition, expansion cards of different lengths are all fixed with the same clamping member, so that cost can be saved.

The above description of the content of the present invention and the following description of the implementation method are used to demonstrate and explain the principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

Please refer to FIG. 1, which is a partial three-dimensional schematic diagram of a circuit board assembly and an expansion card disclosed in an embodiment of the present invention.

In this embodiment, the circuit board assembly 1 is used for assembling an expansion card 2, wherein the expansion card 2 is, for example, an M.2 solid state drive. The circuit board assembly 1 includes a circuit board 10, an electrical connector 20, a plurality of positioning members 31, 32, 33 and a fixing member 40.

Next, please refer to Figure 2. Figure 2 is a top view of the circuit board assembly and expansion card of Figure 1.

The circuit board 10 has a supporting surface 11, and the electrical connector 20 is disposed on the supporting surface 11 of the circuit board 10 and is used for assembly of the expansion card 2. The positioning members 31, 32, 33 are made of metal, for example, and are located on the same side of the electrical connector 20. The positioning members 31, 32, 33 include two first positioning members 31, two second positioning members 32, and two third positioning members 33. The two first positioning members 31 are at a first distance D1 from the electrical connector 20, the two second positioning members 32 are at a second distance D2 from the electrical connector 20, and the two third positioning members 33 are at a third distance D3 from the electrical connector 20, wherein the first distance D1 is greater than the second distance D2, and the second distance D2 is greater than the third distance D3. That is, the two first positioning members 31 are farthest from the electrical connector 20 , the two third positioning members 33 are closest to the electrical connector 20 , and the two second positioning members 32 are between the two first positioning members 31 and the two third positioning members 33 .

In this embodiment, the two first positioning members 31 are of the same structure, so only one of the first positioning members 31 will be described in detail below. The first positioning member 31 includes a head 311 and a body 312 connected to each other. The width W1 of the head 311 is greater than the width W2 of the body 312, and the end of the body 312 away from the head 311 is fixed to the supporting surface 11 of the circuit board 10, for example, by welding. The structures of the two second positioning members 32 and the two third positioning members 33 are the same as those of the two first positioning members 31, so the detailed structures of the two second positioning members 32 and the two third positioning members 33 will not be described again.

Next, please refer to FIG. 2 and FIG. 3 , FIG. 3 is a three-dimensional schematic diagram of the clamping fixture of FIG. 1 .

The clamping member 40 includes an assembly portion 41, an elastic clamping portion 42, two elastic pressing portions 43, a push portion 44 and an extension portion 45. The clamping member 40 is formed by processing the same metal sheet, so that the assembly portion 41, the elastic clamping portion 42, the two elastic pressing portions 43, the push portion 44 and the extension portion 45 are integrally formed.

The assembly portion 41 has a first side 411, a second side 412 and two assembly holes 413. The first side 411 and the second side 412 are opposite to each other, and the two assembly holes 413 are located between the first side 411 and the second side 412 and are separated from each other. The two assembly holes 413 have the same structure, so only one of the assembly holes 413 will be described in detail below. The assembly hole 413 has a release section 4131 and a fixing section 4132 connected to each other, and the release section 4131 is closer to the first side 411 than the fixing section 4132. The width W3 of the release section 4131 is greater than the width W4 of the fixing section 4132 , the width W1 of the head portion 311 of the first positioning member 31 is less than the width W3 of the release section 4131 and greater than the width W4 of the fixing section 4132 , and the width W2 of the body portion 312 of the first positioning member 31 is less than the width W4 of the fixing section 4132 .

The elastic fixing portion 42 is connected to the first side 411 of the assembly portion 41 and is bent toward the second side 412, and the elastic fixing portion 42 has a guide slope 421. The two elastic pressing portions 43 are connected to the first side 411 of the assembly portion 41, and the elastic fixing portion 42 is located between the two elastic pressing portions 43. The pushing portion 44 is connected to one end of the two elastic pressing portions 43 away from the assembly portion 41, and the pushing portion 44 and the two elastic pressing portions 43 are bent and rolled toward the second side 412 of the assembly portion 41. The extension portion 45 is connected to the push portion 44 , and the extension portion 45 and the elastic fixing portion 42 together form a fixing space S to accommodate a side of the expansion card 2 opposite to the electrical connector 20 .

Please refer to Figures 2, 4, and 5 together. Figure 4 is a schematic cross-sectional view of the circuit board assembly and expansion card of Figure 1. Figure 5 is a partially enlarged schematic cross-sectional view of the circuit board assembly and expansion card of Figure 4.

In this embodiment, the clamping member 40 can be selectively assembled to the two first positioning members 31, the two second positioning members 32 or the two third positioning members 33, and the clamping member 40 is used to fix the expansion card 2 to the electrical connector 20. For example, if the expansion card 2 to be installed is the expansion card 2 of FIG. 2 , the clamping member 40 needs to be assembled to the two first positioning members 31 according to the length of the expansion card 2. In the process of assembling the clamping member 40 to the two first positioning members 31, the heads 311 of the two first positioning members 31 are first passed through the release sections 4131 of the two assembly holes 413 of the assembly portion 41, and then the clamping member 40 is slid in the direction away from the electrical connector 20 (along direction A), so that the bodies 312 of the two first positioning members 31 are respectively located in the clamping sections 4132 of the two assembly holes 413, and the assembly portion 41 of the clamping member 40 is clamped between the heads 311 of the two first positioning members 31 and the bearing surface 11 of the circuit board 10. In this way, the assembly of the clamping member 40 is completed. On the contrary, by sliding the fastener 40 toward the electrical connector 20 (opposite to direction A), the heads 311 of the two first positioning members 31 can be aligned with the release sections 4131 of the two assembly holes 413, and the fastener 40 can be removed from the two first positioning members 31.

After the assembly of the fastening member 40 is completed, one side of the expansion card 2 is obliquely inserted into the electrical connector 20, and the other side of the expansion card 2 is pressed against the guiding inclined surface 421 of the elastic fastening portion 42. Then, the expansion card 2 is pressed downward along the direction B, so that the side of the expansion card 2 away from the electrical connector 20 is inserted into the fastening space S, and the side of the expansion card 2 away from the electrical connector 20 is pressed by the two elastic pressing portions 43. In this way, the expansion card 2 is properly fixed to the electrical connector 20, and the assembly of the expansion card 2 is completed.

Next, please refer to FIG. 6 , which is a partially enlarged cross-sectional view of the card fixing member of FIG. 5 being unfastened from the expansion card.

When the expansion card 2 is to be removed, the user can pull the two elastic pressing parts 43 to drive the pushing parts 44, so that the pushing parts 44 push the elastic fixing parts 42 to release the elastic fixing parts 42 from the expansion card 2, and the extension part 45 lifts the expansion card 2 away from the electrical connector 20. In this way, the expansion card 2 can be removed from the electrical connector 20.

It should be noted that the extension portion 45 of the clamping member 40 is an optional structure. In other embodiments, the clamping member may not have an extension portion. In such a configuration, after the elastic clamping portion is released from the expansion card, the user can directly lift up one side of the expansion card remote power connector by hand.

In this embodiment, the two elastic pressing portions 43 not only provide a function of pressing against the expansion card 2 , but also facilitate the user to operate the pushing portion 44 to push against the elastic fixing portion 42 .

It should be noted that the push portion 44 of the clamping member 40 is an optional structure. In other embodiments, the clamping member may not have a push portion. In such a configuration, the user can directly push the elastic clamping portion by hand to release the elastic clamping portion from the expansion card.

In addition, the number of the elastic pressing portion 43 is not intended to limit the present invention. In other embodiments, the clamping member may have only one elastic pressing portion. In another embodiment, the clamping member may have no elastic pressing portion, and the clamping member may only use the elastic clamping portion to achieve the effect of clamping and pressing the expansion card.

Next, please refer to Figures 7 and 8, which are schematic top views of the circuit board assembly and expansion cards of different specifications of Figure 1. In this embodiment, the circuit board assembly 1 can be assembled with expansion cards 2' and 2'' of other lengths in addition to expansion card 2, wherein the length of expansion card 2' is shorter than that of expansion card 2, and the length of expansion card 2'' is shorter than that of expansion card 2'.

As shown in FIG7 , when the expansion card 2′ is to be assembled, the user can reassemble the clamping member 40 to the second second positioning members 32, and then insert the expansion card 2′ into the electrical connector 20 and fix it with the clamping member 40. As shown in FIG8 , when the expansion card 2″ is to be assembled, the user can reassemble the clamping member 40 to the second third positioning members 33, and then insert the expansion card 2″ into the electrical connector 20 and fix it with the clamping member 40.

In this embodiment, the first positioning member 31, the second positioning member 32 and the third positioning member 33 are fixed to the circuit board 10 and have different distances from the electrical connector 20, and the clamping member 40 is detachably and slidably assembled to the first positioning member 31, the second positioning member 32 or the third positioning member 33 so as to be relatively close to or far away from the electrical connector 20. The user can slide the clamping member 40 to assemble the clamping member 40 to the corresponding positioning member to fix the expansion card according to the length of the expansion card to be installed, so that the user can fix expansion cards of different lengths. In addition, expansion cards of different lengths are all fixed with the same clamping member 40, so that cost can be saved.

In this embodiment, the positioning members 31, 32, 33 for positioning the clamping member 40 on the circuit board 10 are fixed on the supporting surface 11 of the circuit board 10. Therefore, compared with the method of fixing the expansion card 2 by screwing into the screw hole of the circuit board, the circuit board 10 of this embodiment does not need to be provided with a screw hole, which is beneficial to the circuit layout of the inner layer of the circuit board 10.

In this embodiment, the metal clamping member 40 has better elasticity and is more durable. Furthermore, the metal clamping member 40 is matched with the metal positioning members 31, 32, 33 to achieve a grounding effect. It should be noted that the materials of the clamping member 40 and the positioning members 31, 32, 33 are not intended to limit the present invention, but other different materials can be selected according to actual needs.

It should be noted that the number of the first positioning member 31, the second positioning member 32 and the third positioning member 33 is not limited to two. In other embodiments, the number of the first positioning member, the second positioning member and the third positioning member can be only one, and the number of the assembly hole of the assembly part of the clamping member can be only one accordingly.

In addition, the above-mentioned structures of the positioning members 31, 32, 33 and the structure of the fastening member 40 are only exemplary and are not intended to limit the present invention. As long as the fastening member can slide relative to the positioning member and can be removed from the positioning member, the structure of the positioning member and the structure of the fastening member can be adjusted.

According to the circuit board assembly disclosed in the above embodiment, the first positioning member, the second positioning member and the third positioning member are fixed to the circuit board and have different distances from the electrical connector, and the clamping member is detachably and slidably assembled on the first positioning member, the second positioning member or the third positioning member so as to be relatively close to or far away from the electrical connector. The user can slide the clamping member to assemble the clamping member to the corresponding positioning member to fix the expansion card according to the length of the expansion card to be installed, so that the user can fix expansion cards of different lengths. In addition, expansion cards of different lengths are all fixed with the same clamping member, so that cost can be saved.

In addition, the positioning members for positioning the card member on the circuit board are fixed on the supporting surface of the circuit board. Therefore, compared with the method of fixing the expansion card by screwing into the screw hole of the circuit board, the circuit board of this embodiment does not need to be provided with screw holes, which is beneficial to the circuit layout of the inner layer of the circuit board.

Furthermore, the metal clamp has better elasticity and is more durable. In addition, the metal clamp is matched with the metal positioning piece to achieve a grounding effect.

Although the present invention is disclosed as above with the aforementioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.

1: PCB assembly 2,2’,2’’: expansion card 10: PCB 11: loading surface 20: electrical connector 31,32,33: positioning piece 311: head 312: body 40: clamping piece 41: assembly part 411: first side 412: second side 413: assembly hole 4131: release section 4132: clamping section 42: elastic clamping part 421: guide slope 43: elastic pressing part 44: push part 45: extension part S: clamping space D1,D2,D3: distance W1,W2,W3,W4: width A,B: direction

FIG. 1 is a partial three-dimensional schematic diagram of a circuit board assembly and an expansion card disclosed according to an embodiment of the present invention. FIG. 2 is a schematic top view of the circuit board assembly and the expansion card of FIG. 1 . FIG. 3 is a schematic three-dimensional diagram of the clamping fixture of FIG. 1 . FIG. 4 is a schematic cross-sectional diagram of the circuit board assembly and the expansion card of FIG. 1 . FIG. 5 is a partially enlarged cross-sectional diagram of the circuit board assembly and the expansion card of FIG. 4 . FIG. 6 is a partially enlarged cross-sectional diagram of the clamping fixture of FIG. 5 being released from the expansion card. FIG. 7 and FIG. 8 are schematic top views of the circuit board assembly of FIG. 1 and expansion cards of different specifications.

1: Circuit board components

2: Expansion card

10: Circuit board

11: Loading surface

20:Electrical connector

31,32,33: Positioning parts

40:Card firmware

Claims (9)

A circuit board assembly for assembling an expansion card comprises: a circuit board; an electrical connector disposed on the circuit board and for assembling the expansion card; a plurality of positioning members fixed to the circuit board, and the distances between the positioning members and the electrical connector are different; and a clamping member detachably and slidably assembled on one of the positioning members, and can be relatively close to or far away from the electrical connector, and the clamping member is used to fix the expansion card to the electrical connector; wherein the positioning members each comprise a head portion and a body portion connected to each other, and the The body is fixed to the circuit board, the width of the head is greater than that of the body, the fastening member has at least one assembly hole, the at least one assembly hole has a release section and a fastening section connected, the width of the release section is greater than that of the fastening section, the width of the head is less than that of the release section and greater than that of the fastening section, the body of one of the positioning members is located in the fastening section of the at least one assembly hole of the fastening member, and the fastening member is clamped between the head of one of the positioning members and the circuit board. A circuit board assembly as described in claim 1, wherein the positioning members include two first positioning members, two second positioning members and two third positioning members, the two first positioning members are at a first distance from the electrical connector, the two second positioning members are at a second distance from the electrical connector, the two third positioning members are at a third distance from the electrical connector, the first distance is greater than the second distance, the second distance is greater than the third distance, the number of the at least one assembly hole of the clamping member is two, and the two first positioning members, the two second positioning members or the two third positioning members are detachably assembled in the two assembly holes of the clamping member. A circuit board assembly as described in claim 1, wherein the clamping member comprises an assembly portion and an elastic clamping portion, the assembly portion is detachably assembled to one of the positioning members, the elastic clamping portion is connected to the assembly portion and is used to clamp to a side of the expansion card relative to the electrical connector. A circuit board assembly as described in claim 3, wherein the clamping member includes at least one elastic pressing portion, the at least one elastic pressing portion is connected to the assembly portion and is used to press the side of the expansion card relative to the electrical connector. A circuit board assembly as described in claim 4, wherein the number of the at least one elastic pressure-receiving portion is two, and the elastic clamping portion is located between the two elastic pressure-receiving portions. The circuit board assembly as described in claim 4, wherein the clamping member further comprises a pushing portion, the pushing portion being connected to an end of the at least one elastic pressing portion away from the assembly portion, and the pushing portion being driven by the at least one elastic pressing portion to push against the elastic clamping portion so that the elastic clamping portion is released from the expansion card. The circuit board assembly as described in claim 6, wherein the clamping member further comprises an extension portion, the extension portion is connected to the push portion, the extension portion and the elastic clamping portion together form a clamping space, and the clamping space is used to accommodate the expansion card relative to one side of the electrical connector. The circuit board assembly as described in claim 7, wherein the assembly portion, the elastic clamping portion, the at least one elastic pressing portion, the pushing portion and the extension portion are integrally formed. A circuit board assembly as described in claim 1, wherein the clamping member and the positioning members are both made of metal.

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