CN107783604B

CN107783604B - Mainboard assembly

Info

Publication number: CN107783604B
Application number: CN201711179326.5A
Authority: CN
Inventors: 利学展; 薛惟翰
Original assignee: Inventec Pudong Technology Corp; Inventec Corp
Current assignee: Inventec Pudong Technology Corp; Inventec Corp
Priority date: 2017-11-23
Filing date: 2017-11-23
Publication date: 2020-08-28
Anticipated expiration: 2037-11-23
Also published as: CN107783604A

Abstract

The invention discloses a mainboard assembly which is suitable for an expansion card and comprises a circuit board, an expansion port and a buckling device. The fastening device comprises an assembly body, a limiting body and a fastening body. The assembly body is arranged on the circuit board. The limiting body is connected to one side of the assembly body far away from the expansion port in a bendable manner and can rotate between a limiting position and an opening position relative to the assembly body. The buckle body can be connected with the assembly body in a bending way and can rotate between a buckling position and a releasing position relative to the buckle body. When the limiting body is located at the limiting position, the limiting body is used for abutting against one side of the expansion card, which is far away from the expansion port, and the limiting body is abutted against and pressed by the buckling body located at the buckling position to be fixed at the limiting position. When the buckle body is positioned at the release position, the buckle body releases the abutting relation of the limiting body.

Description

Mainboard assembly

Technical Field

The present invention relates to an electronic device, and more particularly, to a motherboard assembly including an expansion card fixing device.

Background

The computer equipment has main board with electronic devices for basic functions, such as CPU, power supply, etc. and expanding slot for expanding computer effect via inserting expanding card. For example, when the user has a wireless internet access requirement and the computer host has no wireless network card built therein, the user may selectively add the wireless network card in the computer host to perform the wireless internet access function.

Because the plastic elastic arm has elasticity, when a user inserts the expansion card into the expansion port, the user needs to first open the elastic arms of the two plastic fasteners by two hands to keep the elastic arms of the two plastic fasteners in a relatively far state, and then can insert the expansion card into the expansion port by the hands of other people. Or, the user needs to open the elastic arms of the two plastic fasteners with one hand and then insert the expansion card into the expansion port with the other hand. However, the operation of inserting the expansion card into the expansion port is inconvenient regardless of the method. On the contrary, the expansion card is also inconvenient to be pulled out from the expansion port. In addition, the two sets of plastic elastic arm fasteners respectively fasten the left and right ends of the expansion card, which easily prevents the expansion card from being connected to the connector and the cable. In addition, the two sets of plastic elastic arm fasteners cannot effectively fasten the interface card, so that the expansion card is easily separated from the expansion port due to the movement or shaking of the electronic equipment.

Disclosure of Invention

The present invention provides a motherboard assembly, so as to solve the problems of the prior art that the operation of the plastic spring arm fastener is inconvenient, the fastening position of the plastic spring arm fastener is easy to prevent the expansion card from being connected to the connector and the cable, and the plastic spring arm fastener is difficult to effectively fasten the expansion card.

The mainboard assembly disclosed by the embodiment of the invention is suitable for an expansion card and comprises a circuit board, an expansion port and a buckling device. The fastening device comprises an assembly body, a limiting body and a fastening body. The assembly body is arranged on the circuit board. The limiting body is connected to one side of the assembly body far away from the expansion port in a bendable manner and can rotate between a limiting position and an opening position relative to the assembly body. The buckle body can be connected with the assembly body in a bending way and can rotate between a buckling position and a releasing position relative to the assembly body. When the limiting body is located at the limiting position, the limiting body is used for abutting against one side of the expansion card, which is far away from the expansion port, and the limiting body is abutted against and pressed by the buckling body located at the buckling position to be fixed at the limiting position. When the buckle body is positioned at the release position, the buckle body releases the abutting relation of the limiting body.

According to the main board assembly disclosed in the above embodiment, since the position-limiting body and the locking body can both rotate relative to the assembly body, and no elastic member is arranged between the position-limiting body and the assembly body to reset the position-limiting body, a user only needs to sequentially pull the locking body to the release position and rotate the position-limiting body to the release position, and does not need to fix the locking body and the position-limiting body to the release position and the open position with both hands. That is to say, the user can continue the grafting of expansion card by the hand of the stopper body of originally sliding, and then promotes the convenience of loading and unloading the expansion card.

In addition, when the expansion card is assembled in the buckle device, the expansion card is limited in multiple ways by the first wall body, the third wall body, the abutting convex block, the limiting body and the buckle body, so that the assembling strength of the expansion card and the buckle device can be improved, and the expansion card main board assembly is prevented from being pulled away from the buckle device due to unexpected impact.

The above description of the present invention and the following description of the embodiments are provided to illustrate and explain the spirit and principles of the present invention and to provide further explanation of the invention as claimed in the appended claims.

Drawings

Fig. 1 is a partial top view of a motherboard assembly according to a first embodiment of the invention.

Fig. 2 is a perspective view of the buckle device of fig. 1.

FIG. 3 is a partial perspective view of the main board assembly with the position limiting body of FIG. 1 in a limiting position.

Fig. 4 is a partial perspective view of the main plate assembly of fig. 3 with the buckle body located at a buckling position.

Fig. 5 is a side perspective view of fig. 4.

Fig. 6 is a partial top view of a motherboard assembly according to a second embodiment of the invention.

Wherein, the reference numbers:

1a, 1b motherboard assembly

11 circuit board

12 expansion port

13a, 13b snap-on device

1301 elastic arm

1302 fastener

131 assembly

1311 carrying surface

1312 first side edge

1313 second side edge

1314 third side edge

1315 first alignment Structure

132 adaptor

133 spacing body

1331 stop block

13313 second positioning structure

1332 fastening block

13321 supporting part

13322 button part

1334 containing groove

1335 locating groove

1336 restraining the bumps

134 fastener

1341 body part

13411 limiting groove

1342 card slot part

13421 bottom plate

134211 notch of abdication

13422 side plate

13423 engaging groove

135 first wall

136 press against the bump

137 second wall

138 third wall

2 expansion card

21 golden finger

D1 width of buckle part

Width of D2 support

Detailed Description

Please refer to fig. 1 to 4. Fig. 1 is a partial top view of a main board assembly according to a first embodiment of the present invention. Fig. 2 is a perspective view of the buckle device of fig. 1. FIG. 3 is a partial perspective view of the main board assembly with the position limiting body of FIG. 1 in a limiting position. Fig. 4 is a partial perspective view of the main plate assembly of fig. 3 with the buckle body located at a buckling position.

The motherboard assembly 1a of the present embodiment is suitable for an expansion card 2 of an m.2 interface card or a PCIE interface card having gold fingers 21. The motherboard assembly 1a includes a circuit board 11, an expansion port 12 and two fastening devices 13 a.

The expansion port 12 is disposed on the circuit board 11 and is used for inserting a gold finger 21 of the expansion card 2.

The two fastening devices 13a are respectively clamped on two sides of the expansion card 2, and each fastening device 13a includes an assembly body 131, a connecting body 132, a limiting body 133, a fastening body 134, a first wall 135, a pressing bump 136, a second wall 137 and a third wall 138.

The assembly 131 is mounted on the circuit board 11 and has a carrying surface 1311, a first side 1312, a second side 1313, a third side 1314 and a first positioning structure 1315. The carrying surface 1311 faces away from the circuit board 11. The first side 1312 and the second side 1313 are connected to opposite sides of the support surface 1311, and the first side 1312 is farther from the expansion port 12 than the second side 1313. The third side 1313 is connected between the first side 1312 and the second side 1313. The first positioning structure 1315 is, for example, a pillar, and the first positioning structure 1315 protrudes from the supporting surface 1311 and is adjacent to the first side 1312.

The connecting body 132 is flexibly connected to the third side 1313 of the assembly body 131 near the first side 1312.

The position-limiting body 133 includes a stop block 1331 and a locking block 1332. The stop block 1331 is flexibly connected to the connecting body 132, so that the position-limiting body 133 is flexibly connected to the side of the assembling body 131 away from the expansion port 12 through the connecting body 132, and has a limiting position (please refer to fig. 3 temporarily) and an open position (as shown in fig. 2).

The stop block 1331 has a second locating feature 13313 that mates with the first locating feature 1315. The second positioning structure 13313 is, for example, but not limited to, a locking groove. In other embodiments, the first positioning structure may also be a locking groove, and the second positioning structure may also be a protrusion.

The locking piece 1332 includes a supporting portion 13321 and a locking portion 13322. The supporting portion 13321 engages the stop block 1331 and the buckle portion 13322. In addition, referring to fig. 5, the width D1 of the fastening portion 13322 is greater than the width D2 of the supporting portion 13321.

In addition, the position-limiting body 133 has a receiving groove 1334 and two positioning grooves 1335. The receiving groove 1334 is located at a side of the stop block 1331 away from the expansion port 12, and the two positioning grooves 1335 are located at two opposite sides of the receiving groove 1334.

The position-limiting body 133 further includes a limiting protrusion 1336. The limiting protrusion 1336 is connected to a side edge of the receiving groove 1334 and extends away from the expansion port 12.

When the position-limiting body 133 is in the open position (as shown in fig. 2), the assembly body 131, the position-limiting body 133 and the connecting body 132 are substantially parallel. When the position-limiting body 133 is in the limiting position (as shown in fig. 3), the position-limiting body 133 is substantially perpendicular to the connecting body 132, the position-limiting body 133 is opposite to the assembly body 131, and the first positioning structure 1315 is combined with the second positioning structure 13313.

The locking body 134 includes a body portion 1341 and a locking portion 1342. The body portion 1341 is flexibly connected to the first side 1312 of the assembly 131, so that the locking member 134 can rotate between a locking position (as shown in fig. 4) and a releasing position (as shown in fig. 3) relative to the assembly 131.

The body portion 1341 has a restriction groove 13411. The slot portion 1342 includes a bottom plate 13421 and two side plates 13422. The bottom plate 13421 and the two side plates 13422 are connected to the main body 1341 on the side near the expansion port 12. The two side plates 13422 are respectively connected to two opposite sides of the bottom plate 13421, so that the bottom plate 13421 and the two side plates 13422 jointly surround a locking groove 13423. The bottom panel 13421 has an escape notch 134211 corresponding to the engaging groove 13423. That is, the restriction groove 13411 and the engagement groove 13423 are located on opposite sides of the bottom panel 13421.

The first wall 135 protrudes from the second side 1313 of the assembly 131, and is opposite to the locking member 134. The pressing protrusion 136 is connected to a side of the first wall 135 away from the assembly 131 and protrudes toward the fastening body 134.

The second wall 137 protrudes from the first side 1312 of the assembly 131 and is opposite to the first wall 135. When the stopper 133 is in the limit position, the second wall 137 abuts against the stop 1331 at a side away from the expansion port 12.

The third wall 138 protrudes from the assembly 131 and is between the first wall 135 and the second wall 137. In detail, the third wall 138 extends from the first side 1312 to the second side 1313 of the assembly 131.

In the embodiment, the position-limiting body 133, the engaging body 132, the fastening body 134 and the assembly body 131 are integrally formed, and the thickness of the connecting portion between the position-limiting body 133 and the engaging body 132, the connecting portion between the position-limiting body 132 and the assembly body 131, and the connecting portion between the fastening body 134 and the assembly body 131 are reduced, so that the position-limiting body 133 can swing relative to the position-limiting body 132, the position-limiting body 132 can swing relative to the assembly body 131, and the fastening body 134 can swing relative to the assembly body 131, but not limited thereto. In other embodiments, the above-mentioned connection may also be pivoted to achieve the relative swinging or rotating effect.

The following describes the process of fixing the expansion card by the locking device in detail, please refer to fig. 2 to 5.

First, as shown in fig. 2, the stopper 133 and the locking member 134 are respectively located at an open position and a release position. Next, as shown in fig. 3, the expansion card 2 is inserted into the expansion port 12 and is carried on the carrying surface 1311 of the assembly 131. To fix the expansion card 2, the stopper 133 is first rotated from the open position to the restricting position. At this time, the second positioning structure 13313 of the position-limiting body 133 is fastened to the first positioning structure 1315 of the assembly 131, so as to temporarily fix the position relationship between the position-limiting body 133 and the assembly 131, and the expansion card 2 is sandwiched between the position-limiting body 133 and the circuit board 11. Next, as shown in fig. 4, the buckling body 134 is bent upward from the releasing position to enter the containing groove 1334 of the stopper 133, so that two opposite sides of the main body 1341 of the buckling body 134 are respectively located at two positioning grooves 1335, so that the buckling body 134 is located at the buckling position. At this time, as shown in fig. 5, the limiting protrusion 1336 is inserted into the limiting groove 13411 and pressed by the bottom plate 13421 of the slot portion 1342, the supporting portion 13321 is located in the relief notch 134211, and the fastening portion 13322 is fastened to the fastening slot 13423. The position-limiting body 133 is pressed by the buckling body 134 at the buckling position and fixed at the limiting position. Since the stopper 133 is fixed by the locking body 134, the expansion card 2 is stopped by the stopper 133.

When the expansion card 2 is fixed by the card holding device 13a, the expansion card 2 is restricted in four directions in terms of one side. In detail, the first wall 136 abuts against a side surface of the expansion card 2 near the expansion port 12, so that the expansion card 2 is limited by the first wall 135 in the first horizontal direction H1. The third wall 138 abuts against a side surface of the expansion card 2 away from the opposite side fastening device, so that the expansion card 2 is limited by the third wall 138 in the second horizontal direction H2. The pressing protrusion 136 abuts against a surface of the expansion card 1 away from the circuit board 11, and the stop block 1331 of the position-limiting body 133 abuts against the other side of the surface of the expansion card 2 away from the circuit board 11, so that the expansion card 2 is limited by the stop block 1331 in the third horizontal direction H3, and limited by the pressing protrusion 137 and the stop block 1331 in the vertical direction V1, so that the freedom of movement of the expansion card 2 in the direction away from the circuit board 11 is limited. Thus, the expansion card 2 is not only limited by three horizontal directions, but also limited by two sides in the vertical direction in a balanced manner, so that the expansion card 2 can be prevented from being separated from the locking device 13a due to unexpected impact on the main board assembly 1.

In addition, as can be seen from the operation flow of the locking device 13a, the locking body 134 and the position-limiting body 133 are rotated one by one to quickly fix the expansion card 2 and provide multi-directional position limitation. On the contrary, when the fixing of the expansion card 2 by the locking device 13a needs to be released, after the locking of the locking body 134 and the limiting body 133 is sequentially released, both hands can be vacated, and the expansion card 2 can be conveniently taken out. Thus, the convenience of mounting and dismounting the expansion card 2 is improved.

In the foregoing embodiment, the expansion card 2 is fixed on both sides by the same fastening device 13a, but not limited thereto. Referring to fig. 6, fig. 6 is a top view of a motherboard assembly according to a second embodiment of the invention. In this embodiment, the fastening devices on the left and right sides of the main board assembly 1b are different, wherein one side can be the fastening device 13a in the previous embodiment, and the other side can be, for example, the conventional elastic arm type fastening device 13 b. The elastic arm type latch device 13b includes an elastic arm 1301 and a latch 1302 connected to each other. The elastic arm 1301 can be stretched outwards to assemble or disassemble the expansion card 2 from the fixing of the fastener 1302.

According to the main board assembly of the embodiment, the position-limiting body and the buckling body can rotate relative to the assembly body, and the elastic piece is not arranged between the position-limiting body and the assembly body to reset the position-limiting body, so that a user only needs to sequentially pull the buckling body to the releasing position and rotate the position-limiting body to the releasing position, and the buckling body and the position-limiting body are not required to be fixed at the releasing position and the opening position by two hands. That is, the user can continue to insert the expansion card by the original hand sliding the position-limiting body, so as to improve the convenience of loading and unloading the expansion card, and in addition, the operation process of the locking device 11 can quickly complete the fixing of the expansion card 2 only by rotating the position-limiting body 133 and the rotating locking body 134, and provide multi-directional position limitation. Thus, the assembly of the expansion card 2 and the buckling device 11 is simplified, and the installation efficiency of the expansion card 2 can be improved.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A motherboard assembly adapted for use with an expansion card, the motherboard assembly comprising:

a circuit board;

an expansion port arranged on the circuit board; and

a buckle device, comprising:

an assembly body arranged on the circuit board;

the limiting body is connected to one side of the assembly body, which is far away from the expansion port, in a bending way and can rotate between a limiting position and an opening position relative to the assembly body; and

the buckle body is connected with the assembly body in a bendable way and can rotate between a buckling position and a releasing position relative to the assembly body;

wherein, when the limiting body is at the limiting position, the limiting body is used for abutting against one side of the expansion card far away from the expansion port, and the limiting body is pressed by the buckling body at the buckling position and fixed at the limiting position, when the buckling body is at the releasing position, the buckling body releases the abutting relation of the limiting body,

wherein, the buckle device further comprises a connecting body which can be connected with one side of the assembly body far away from the expansion port in a bending way, and the limiting body can be connected with the connecting body in a bending way so as to ensure that the limiting body can be connected with one side of the assembly body far away from the expansion port in a bending way through the connecting body,

when the limiting body is located at the limiting position, the limiting body is substantially vertical to the connecting body, the limiting body is opposite to the assembling body, and when the limiting body is located at the opening position, the assembling body, the limiting body and the connecting body are substantially parallel.

2. The main board assembly according to claim 1, wherein the position-limiting body comprises a stop block and a locking block connected to each other, the stop block is flexibly connected to the connecting body, and when the position-limiting body is located at the position-limiting position, the stop block is folded on the assembly body, and the locking block is located at a side of the stop block away from the assembly body, the locking body comprises a body portion and a locking groove portion connected to each other, the body portion is flexibly connected to the assembly body, and when the position-limiting body is located at the position-limiting position and the locking body is located at the locking position, the locking groove portion is detachably locked to the locking block.

3. The motherboard assembly as recited in claim 2, wherein the fastening block comprises a supporting portion and a fastening portion, the supporting portion is connected to the stopping block and the fastening portion, and the fastening portion has a width larger than that of the supporting portion, the engaging portion comprises a bottom plate and two side plates, the two side plates are respectively connected to two opposite sides of the bottom plate, so that the bottom plate and the two side plates jointly surround a fastening groove, the bottom plate has a relief notch corresponding to the fastening groove, when the limiting body is located at the limiting position and the fastening body is located at the fastening position, the supporting portion is located at the relief notch, and the fastening portion is fastened to the fastening groove.

4. The motherboard assembly as recited in claim 3, wherein the position-limiting body further comprises a limiting protrusion, the body of the fastening body has a limiting groove, when the position-limiting body is located at the limiting position and the fastening body is located at the fastening position, the limiting protrusion is located in the limiting groove, and the bottom plate of the fastening slot portion presses against the limiting protrusion.

5. The main board assembly according to claim 2, wherein the assembly body has a first positioning structure, the stop block has a second positioning structure matching with the first positioning structure, and the first positioning structure is combined with the second positioning structure when the position-limiting body is located at the limiting position.

6. The main board assembly according to claim 2, wherein the locking device further comprises a first wall protruding from the assembly body and a pressing protrusion opposite to the locking body, the pressing protrusion being connected to a side of the first wall away from the assembly body and protruding toward the locking body.

7. The motherboard assembly as recited in claim 6, wherein the fastening device further comprises a second wall body and a third wall body, the second wall body protrudes from the assembly body, and is opposite to the first wall body, when the limiting body is located at the limiting position, the second wall body abuts against a side of the stop block away from the expansion port, and the third wall body protrudes from the assembly body and is located between the first wall body and the second wall body.

8. The motherboard assembly as recited in claim 7, wherein the retainer has a receiving slot and two positioning slots, the receiving slot is located at a side of the stop block away from the expansion port, the two positioning slots are located at two opposite sides of the receiving slot, when the retainer is located at the restraining position and the fastening body is located at the fastening position, the main body of the fastening body is located at the receiving slot, and two opposite sides of the main body of the fastening body are respectively fastened to the two positioning slots.