TWI652976B - Motherboard assembly and engagement device thereof - Google Patents

Abstract

A motherboard assembly for securing expansion cards. The motherboard assembly includes a circuit board, an expansion port, and a snap device. The expansion port is set on the circuit board and is used for expansion card insertion. The buckle device includes a bearing portion, a spring arm portion, a first fastening portion, a pressure receiving portion and a pressing portion. The carrying portion is disposed on the circuit board. The elastic arm portion is swingably coupled to a side of the carrying portion away from the expansion port. The first fastening portion protrudes from the elastic arm portion and is opposite to the carrying portion. The first fastening portion is for engaging the expansion card. The pressure receiving portion is coupled to the elastic arm portion and opposed to the bearing portion. The pressing portion is connected to the carrying portion, and the pressing portion and the pressure receiving portion are located on the same side of the carrying portion. The pressing portion is located on a side of the pressure receiving portion away from the circuit board, and the orthographic projection of the pressing portion on the circuit board overlaps with the orthographic portion of the pressure receiving portion on the circuit board.

Description

Motherboard assembly and its buckle device

The present invention relates to a fixing device, and more particularly to a motherboard assembly for securing an expansion card and a buckle device therefor.

In addition to electronic devices that provide basic functions such as a central processing unit and a power supply, the expansion boards are also provided with expansion slots for users to insert expansion cards when additional functions are required. Amplify computer power. For example, when the user has the requirement of wireless Internet access and the wireless network card is not built in the computer host, the user can selectively add a wireless network card to the computer host to perform the wireless Internet access function.

Generally, in addition to being inserted into the expansion slot, the expansion card is usually attached to the expansion slot, and the expansion card is usually fixed by the elastic arm type on the left and right sides of the expansion card. The elastic arm of the elastic arm type mount usually has elasticity that can be rotated relative to the circuit board to improve the convenience of loading and unloading the expansion card. However, when the computer equipment is subjected to impact or vibration, the elastic arm of the fixed seat will be shaken relative to the circuit board and the expansion card will be unbuckled. As a result, the expansion card will be detached from the mount or even the expansion slot.

The present invention provides a motherboard assembly and a buckle device thereof to avoid the problem that the expansion card is easily detached from the fixture.

One embodiment of the present invention discloses a motherboard assembly suitable for securing an expansion card. The motherboard assembly includes a circuit board, an expansion port, and at least one snap device. The expansion port is set on the circuit board and is used for expansion card insertion. The at least one fastening device includes a bearing portion, a spring arm portion, a first fastening portion, a pressure receiving portion and a pressing portion. The carrying portion is disposed on the circuit board. The elastic arm portion is swingably coupled to a side of the carrying portion away from the expansion port. The first fastening portion protrudes from the elastic arm portion and is opposite to the carrying portion. The first fastening portion is for engaging the expansion card. The pressure receiving portion is coupled to the elastic arm portion and opposed to the bearing portion. The pressing portion is connected to the carrying portion, and the pressing portion and the pressure receiving portion are located on the same side of the carrying portion. The pressing portion is located on a side of the pressure receiving portion away from the circuit board, and the orthographic projection of the pressing portion on the circuit board overlaps with the orthographic portion of the pressure receiving portion on the circuit board.

Another embodiment of the present invention discloses a buckle device that is adapted to be disposed on a circuit board and used to fix an expansion card. The buckle device includes a bearing portion, a spring arm portion, a first buckle portion, a pressure receiving portion and a pressing portion. The carrying portion is disposed on the circuit board. The elastic arm portion is swingably coupled to a side of the carrying portion away from the expansion port. The first fastening portion protrudes from the elastic arm portion and is opposite to the carrying portion. The first fastening portion is for engaging the expansion card. The pressure receiving portion is coupled to the elastic arm portion and opposed to the bearing portion. The pressing portion is connected to the carrying portion, and the pressing portion and the pressure receiving portion are located on the same side of the carrying portion. The pressing portion is located on a side of the pressure receiving portion away from the circuit board, and the orthographic projection of the pressing portion on the circuit board overlaps with the orthographic portion of the pressure receiving portion on the circuit board.

According to the motherboard assembly and the buckle device disclosed in the above embodiments, since the elastic portion is additionally connected to the pressure receiving portion, and the pressure receiving portion is located between the pressing portion and the circuit board, and the pressing portion is positive on the circuit board The projection and the pressure receiving portion overlap the orthographic projection portion of the board. Therefore, when the expansion card is mounted on the pressing portion when the expansion card is mounted on the pressing device, the pressing portion presses the pressure receiving portion, and the pressure receiving portion connected to the elastic arm portion is restricted to the pressing portion and the circuit. Between the boards. In this way, the movable free pressing portion of the elastic arm portion is restricted in the vertical direction, and the elastic arm portion is vertically swayed relative to the circuit board when the main board assembly is subjected to vibration, thereby strengthening the fixing strength of the buckle device to the expansion card. .

The above description of the present invention and the following description of the embodiments are intended to illustrate and explain the principles of the invention, and to provide a further explanation of the scope of the invention.

Please refer to Figure 1 and Figure 2. 1 is a partial top plan view of a motherboard assembly in accordance with a first embodiment of the present invention. Figure 2 is a partial perspective view of Figure 1.

This embodiment discloses a motherboard assembly 1a adapted to fix an expansion card 2 having a gold finger 21. The motherboard assembly 1a includes a circuit board 11, an expansion port 12, two latching devices 13a, and two limiting bosses 14.

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

The two latching devices 13a are respectively located on the left and right sides of the expansion card 2 to fix the left and right sides of the expansion card 2 respectively. In detail, each of the latching devices 13a includes a carrying portion 131, a resilient arm portion 132, a first latching portion 133, a pressure receiving portion 134, a pressing portion 135, and a stopping portion 136.

The carrying portion 131 is disposed on the circuit board 11. The elastic arm portion 132 has a first side 1321 and a second side 1322 opposite to each other. The first side 1321 of the elastic arm portion 132 is swingably coupled to a side of the carrying portion 131 away from the expansion magazine 12. The first hooking portion 133 protrudes from the elastic arm portion 132 and is opposed to the carrying portion 131. The pressure receiving portion 134 is connected to the second side edge 1322 of the elastic arm portion 132 and also faces the carrying portion 131.

The pressing portion 135 includes a swinging member 1351 and a pressing member 1352. The swinging member 1351 has a first side 13511, a second side 13512 and an assembly hole 13513. The first side 13511 is opposite the second side 13512. The first side 13511 of the swinging member 1351 is swingably coupled to the carrying portion 131, and the second side 13512 is coupled to the pressing member 1352. The pressing portion 135 and the pressure receiving portion 134 are located on the same side of the carrying portion 131. The pressing member 1352 is located on a side of the pressure receiving portion 134 away from the circuit board 11, and the orthographic projection of the pressing member 1352 on the circuit board 11 overlaps with the projected portion of the pressure receiving portion 134 on the circuit board 11.

In the present embodiment, the oscillating member 1351 of the pressing portion 135 is swingable relative to the bearing portion 131, and is tilted upward relative to the bearing portion 131 in a normally unstressed state. This is designed to help simplify the demolding process of the snap device 13a during production, but is not limited thereto. In other embodiments, the abutment may not include a rocking member.

The stop portion 136 protrudes from the elastic arm portion 132 and extends from the second side edge 1322 of the elastic arm portion 132 toward the first side. In other words, the stopper portion 136 extends from the first hook portion 133 toward the carrier portion 131.

The limiting boss 14 is disposed on the circuit board 11 and has a stop sidewall 141 and a second latching portion 142. The stopper side wall 141 is connected to a side of the carrying portion 131 away from the elastic arm portion 132. The second fastening portion 142 is disposed on a side of the stopper side wall 141 facing the elastic arm portion 132 and is opposite to the first fastening portion 133 .

The operation flow of fixing the expansion card 2 by the snap device 13a will be described in detail below. Please refer to Figure 3 to Figure 5. FIG. 3 to FIG. 5 are schematic diagrams showing the operation flow of fixing the expansion card by the buckle device of FIG. 1 . First, as shown in FIG. 3, the two elastic arm portions 132 are respectively outwardly moved in the unfastening directions D1 and D2 with respect to the bearing portion 131, so that the first fastening portions 133 protruding from the elastic arm portion 132 are outwardly outward. Move to make room for the expansion card 2 to be placed. Next, as shown in FIG. 4, the gold finger 21 of the expansion card 2 is inserted into the expansion cassette 12, and the expansion card 2 is pressed down toward the circuit board 11 between the two fastening devices 13a. As shown in FIG. 5, the elastic arm portion 132 is released to be relatively close to the expansion card 2, and the expansion card 2 is engaged with the first fastening portion 133, that is, the expansion card 2 and the buckle device 13a are completed. Assembly.

When the expansion card 2 is fixed to the snap device 13a, the expansion card 2 is limited in four directions on one side. In detail, the first fastening portion 133 abuts against a side of the expansion card 2 away from the expansion cassette 12 and a surface away from the circuit board 11, so that the expansion card 2 receives the first card in the first horizontal direction H1 and the vertical direction. The limit of the buckle portion 133. The stop side wall 141 abuts against one side of the expansion card 2 near the expansion cassette 12, so that the expansion card 2 is restrained by the stop side wall 141 in the second horizontal direction H2. The second fastening portion 142 abuts against a surface of the expansion card 2 away from the circuit board 11 , so that the expansion card 2 is simultaneously restricted by the first fastening portion 133 and the second fastening portion 142 in the vertical direction to limit expansion. The card 2 is free to move away from the circuit board 11. The stopper 136 abuts against one side of the expansion card 2 away from the other buckle device, so that the expansion card 2 is restricted by the stopper 136 in the third horizontal direction H3. The first horizontal direction H1 is opposite to the second horizontal direction H2 and is perpendicular to the third horizontal direction H3.

It is to be noted that, in this embodiment, the swinging member 1351 is pressed against the circuit board 11 by the pressing of the expansion card 2, and the pressing member 1352 connected to the swinging member 1351 is pressed against the pressure receiving portion 134. The spring arm portion 132 connected to the pressure receiving portion 134 can be collectively restrained in the vertical direction. As a result, even if the main board unit 1a is vibrated, the elastic arm portion 132 does not rattle relative to the circuit board 11 and the expansion card 2 is disengaged from the first hook portion 133. However, it is not limited thereto. In other embodiments, the swinging member 135 can also be fastened to the corresponding locking hole of the circuit board 11 by, for example, screwing through the assembling hole 13513 of the swinging member 1351.

In addition, in the foregoing embodiment, both sides of the expansion card 2 are fixed by the same buckle device 13a, but not limited thereto. Please refer to FIG. 6. FIG. 6 is a partial top plan view of a motherboard assembly according to a second embodiment of the present invention. In the present embodiment, the locking devices on the left and right sides of the main board assembly 1b are different, one side of which can adopt the locking device 13a in the previous embodiment, and the other side can use, for example, a conventional elastic arm type buckle. Device 13b. The elastic arm type locking device 13b includes a connected elastic arm member 137 and a fastening member 138. The spring member 137 can be stretched outward to allow the expansion card 2 to be assembled or disengaged from the two fasteners 138.

According to the motherboard assembly and the buckle device of the above embodiment, the elastic arm portion is additionally connected to the pressure receiving portion, the pressure receiving portion is located between the pressing member of the pressing portion and the circuit board, and the pressing portion is positive on the circuit board The projection and the pressure receiving portion overlap the orthographic projection portion of the board. Therefore, when the expansion card is mounted on the swinging member of the pressing portion when the expansion card is mounted on the buckle device, the pressing member presses the pressure receiving portion, and the pressure receiving portion connected to the elastic arm portion is restricted to the pressing portion. Between the piece and the board. In this way, the freedom of movement of the elastic arm portion in the vertical direction is restricted by the pressing portion, and the elastic arm portion can be vertically swayed relative to the circuit board when the main board assembly is subjected to vibration, thereby reinforcing the expansion device of the buckle device to the expansion card. Fixed strength.

While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.

1a, 1b‧‧‧ motherboard components

11‧‧‧ boards

12‧‧‧Expansion埠

13a, 13b‧‧‧ buckle device

131‧‧‧Loading Department

132‧‧‧Bounce arm

1321‧‧‧ first side

1322‧‧‧Second side

133‧‧‧First buckle

134‧‧‧ Pressure Department

135‧‧‧Resistance Department

1351‧‧‧Swinging parts

13511‧‧‧ first side

13512‧‧‧Second side

13513‧‧‧Assembled holes

1352‧‧‧ Pressing parts

136‧‧‧stop

137‧‧‧Ball arm

138‧‧‧Card fasteners

14‧‧‧Limited boss

141‧‧‧stop side wall

142‧‧‧Second buckle

2‧‧‧Expansion card

21‧‧‧Gold Fingers

D1, D2‧‧‧ unbuttoning direction

H1‧‧‧first horizontal direction

H2‧‧‧second horizontal direction

H3‧‧‧ third horizontal direction

1 is a partial top plan view of a motherboard assembly in accordance with a first embodiment of the present invention. Figure 2 is a partial perspective view of Figure 1. FIG. 3 to FIG. 5 are schematic diagrams showing the operation flow of fixing the expansion card by the buckle device of FIG. 1 . 6 is a partial top plan view of a motherboard assembly in accordance with a second embodiment of the present invention.

Claims (8)

A motherboard assembly, which is suitable for fixing an expansion card, comprising: a circuit board; an expansion port disposed on the circuit board for inserting the expansion card; and at least one fastening device comprising: a carrying portion The first latching portion protrudes from the elastic arm portion and is coupled to The first latching portion is configured to engage the expansion card, a pressure receiving portion is coupled to the elastic arm portion and opposite to the bearing portion, and a pressing portion is coupled to the carrying portion. And the pressing portion and the pressure receiving portion are located on the same side of the bearing portion, and the pressing portion is located at a side of the pressure receiving portion away from the circuit board, and the orthographic portion of the pressing portion is orthogonal to the circuit board The pressure receiving portion overlaps the orthographic projection of the circuit board, and the pressing portion is swingably coupled to the carrying portion. The motherboard assembly of claim 1, wherein the pressing portion comprises a swinging member and a pressing member, one side of the swinging member is swingably connected to the carrying portion, and the opposite side is connected to The pressing member is located on a side of the pressure receiving portion away from the circuit board, and an orthographic projection of the pressing member on the circuit board overlaps with an orthographic projection portion of the pressure receiving portion on the circuit board. The motherboard assembly of claim 2, wherein the swinging member has an assembly hole, and the assembly hole of the swinging member is locked with a locking hole of the circuit board. The motherboard assembly of claim 1, wherein the at least one The latching device further includes a stopping portion protruding from the elastic arm portion and extending from the first locking portion toward the carrying portion. The motherboard assembly of claim 1, further comprising a limiting boss, the limiting boss having a stop side wall and a second latching portion, wherein the retaining sidewall is connected to the bearing The second fastening portion is disposed on a side of the stopping arm wall facing the elastic arm portion. The motherboard assembly of claim 1, wherein the number of the at least one fastening device is two, and the two fastening devices are respectively engaged with opposite sides of the expansion card. A latching device is disposed on a circuit board and is configured to fix an expansion card, comprising: a carrying portion disposed on the circuit board; a spring arm portion swingably coupled to the carrying portion; a first card a buckle portion, the first buckle portion protrudes from the elastic arm portion and is configured to engage the expansion card; a pressure receiving portion is connected to a side of the elastic arm portion different from the bearing portion; and a pressing portion The portion is connected to the bearing portion, the pressing portion is located on a side of the pressure receiving portion away from the circuit board, and the orthographic projection of the pressing portion on the circuit board and a partial projection of the pressure receiving portion on the circuit board The overlap is performed, and the pressing portion is swingably coupled to the carrying portion. The buckle device of claim 7, further comprising a swinging portion, one side of the swinging portion being swingably coupled to the carrying portion, and the opposite side being coupled to a pressing member.