CN102591409A - Circuit board fixing mechanism - Google Patents

Abstract

A circuit board fixing mechanism is used for fixing a circuit board and comprises a first shell, wherein the first shell is made of metal. The first shell comprises a bottom surface and a clamping piece. The clamping piece is arranged on the bottom surface, the clamping piece is provided with a pressing surface, the pressing surface is parallel to the bottom surface, a gap is arranged between the pressing surface and the bottom surface, the circuit board is contained in the gap, and the pressing surface is in contact with the circuit board for positioning.

Description

Circuit Board Fixing Mechanism

technical field

The present invention relates to a fixing mechanism, and in particular to a circuit board fixing mechanism.

Background technique

With the development of science and technology, people have higher and higher requirements for the functions and requirements of computer systems. Since the complex integrated circuit design will consume a large amount of electric energy, and the consumed electric energy will be converted into heat to cause a temperature rise, thus making the temperature rise in the computer system more serious. When heat accumulates inside the casing and cannot be dissipated in real time, it will cause electronic components to fail to work properly.

With the development of wireless communication technologies, communication technologies such as WiFi, Bluetooth, and GPS have become common auxiliary functions in notebook computers. Therefore, a corresponding antenna circuit board needs to be provided in the notebook computer to provide functions such as WiFi, Bluetooth, and GPS. For the sake of receiving quality, these antenna circuit boards are often installed on the outer frame of the display case. Most of the existing antenna circuit boards are fixed by screws and dissipated by heat sinks, which will increase the number of parts and assembly costs. .

Contents of the invention

Therefore, the object of the present invention is to provide a circuit board fixing mechanism for fixing the circuit board without screws.

According to an embodiment of the present invention, a circuit board fixing mechanism is provided for fixing a circuit board, which includes a first casing, and the material of the first casing is metal. The first shell includes a bottom surface and a clamping part. The clamping piece is arranged on the bottom surface. The clamping piece has a pressing surface parallel to the bottom surface. There is a space between the pressing surface and the bottom surface. The circuit board is accommodated in the space, and the pressing surface contacts the circuit board for positioning.

The circuit board fixing mechanism also includes at least one protruding rib. The protruding rib is arranged on the bottom surface, and the protruding rib contacts the side of the circuit board for positioning. The circuit board contains heating components, and the pressing surface is in contact with the heating components. The circuit board fixing mechanism may further include a heat conduction pad, and the heat conduction pad is arranged on a pressing surface contacting the circuit board. The circuit board includes holes, and the first casing includes bumps arranged on the bottom surface, and the bumps are engaged with the holes. The pressing surface can have a guide bevel extending away from the bottom surface. Wherein the first casing can be a display rear frame of a notebook computer, and the circuit board is an antenna circuit board. The circuit board fixing mechanism also includes a second casing and a plurality of engaging parts. The engaging parts are respectively disposed on the first casing and the second casing, so as to engage the first casing and the second casing. The second casing includes a plurality of retaining walls, and the retaining walls extend toward the first casing. The second housing includes a plurality of protruding points, which are engaged with the holes on the circuit board.

The first housing and the various components on it can be made in one piece, the circuit board is clamped between the holding member and the bottom surface, and the circuit board is fixed by the ribs, and the bumps on the first housing can be aligned with the circuit boards. The holes are engaged to position the circuit board. Compared with the previous method of fixing the circuit board to the housing with screws, the present invention can effectively reduce the cost of parts and the man-hours for assembly. In addition, heat exchange is performed between the pressing surface and the circuit board, so that the heat generated by the circuit board is dissipated through the first casing, thereby achieving the effect of heat dissipation without additional use of a heat sink.

Description of drawings

In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious and understandable, the detailed description of the accompanying drawings is as follows:

FIG. 1 shows a perspective view of an embodiment of the circuit board fixing mechanism of the present invention.

FIG. 2 is a perspective view of placing a circuit board into the circuit board fixing mechanism of FIG. 1 .

FIG. 3 is a cross-sectional view of the circuit board fixing mechanism in FIG. 2 .

FIG. 4 is a schematic diagram of another embodiment of the circuit board fixing mechanism of the present invention.

FIG. 5 is a schematic diagram of the second housing 180 matched with the first housing 110 in FIG. 4 .

Explanation of main reference signs

100: first case

110: bottom surface

120: clamping piece

122: support part

124: Pressed surface

126: Guide slope

130: convex rib

140: bump

160: circuit board

162: hole

164: Heating components

170: thermal pad

180: second shell

182: Retaining Wall

190: Bump

200: notebook computer

210: Liquid crystal display panel

g: interval

Detailed ways

The following will clearly illustrate the spirit of the present invention with drawings and detailed descriptions. Anyone with ordinary knowledge in the technical field can change and modify the technology taught by the present invention after understanding the preferred embodiments of the present invention. without departing from the spirit and scope of the present invention.

Referring to FIG. 1 , it shows a perspective view of an embodiment of the circuit board fixing mechanism of the present invention. The circuit board fixing mechanism is used to fix a circuit board (not shown in the figure), which includes a first casing 100 , wherein the first casing 100 has a bottom surface 110 and a clamping member 120 . The clamping member 120 includes a connected supporting portion 122 and a pressing surface 124 , the supporting portion 122 connects the pressing surface 124 and the bottom surface 110 , and there is a gap g between the pressing surface 124 and the bottom surface 110 . The circuit board can be accommodated in the gap g, and the pressing surface 124 contacts the circuit board to limit the displacement of the circuit board in the z direction. The pressing surface 124 may further include a guiding slope 126 extending away from the bottom surface 110 to facilitate the entry of the circuit board into the gap g.

The first housing 100 further includes at least one rib 130 disposed on the bottom surface 110 . The location of the protruding rib 130 is corresponding to the edge of the circuit board. After the circuit board is placed in the gap g, the rib 130 can contact the side of the circuit board to limit the displacement of the circuit board in the x direction. Generally, holes are provided on the circuit board for screw locking, but the first housing 100 of the present invention includes bumps 140 disposed on the bottom surface 110 . The positions of the protrusions 140 are corresponding to the holes on the circuit board, so as to engage with the holes to position the circuit board during assembly.

Referring to FIG. 2 , it illustrates a perspective view of placing the circuit board into the circuit board fixing mechanism of FIG. 1 . The circuit board 160 has been put into the clamping member 120 , especially accommodated between the pressing surface 124 and the bottom surface 110 . The pressing surface 124 is in contact with the circuit board 160 to limit the displacement of the circuit board 160 in the z direction. The protruding ribs 130 are distributed around the circuit board 160 and contact the side of the circuit board 160 to limit the displacement of the circuit board 160 in the x direction. The circuit board 160 has a hole 162 , and the bump 140 engages with the hole 162 to position the circuit board 160 .

The first housing 100 may be an integrally formed metal housing, or a metal part in the housing. The clamping member 120 is also made of metal material. Therefore, when the pressing surface 124 is in contact with the circuit board 160 , the pressing surface 124 can exchange heat with the circuit board 160 . The heat generated by the circuit board 160 and the heating components on it is sent to the first casing 100 through the pressing surface 124 in contact with it. Since the material of the first casing 100 is a metal with good thermal conductivity and has a relatively large surface area, Heat can thus be dissipated from the first housing 100 . In other words, the circuit board fixing mechanism not only can fix the circuit board 160, but also has the effect of heat dissipation.

Referring to FIG. 3 , it shows a cross-sectional view of the circuit board fixing mechanism in FIG. 2 . The clamping member 120 is approximately L-shaped, and the guiding slope 126 and the supporting portion 122 are respectively located at two opposite ends of the pressing surface 124 . The circuit board 160 enters between the pressing surface 124 and the bottom surface 110 from one end of the guiding slope 126 . The pressing surface 124 can directly contact the circuit board 160 to position the circuit board 160 and dissipate heat. Or, as in this embodiment, the circuit board fixing mechanism also has a heat conduction pad 170, and the heat conduction pad 170 is arranged on the side of the pressing surface 124 contacting the circuit board 160, so that the pressing surface 124 contacts the circuit board 160 through the heat conduction pad 170, thereby improving heat conduction s efficiency. There is a heating component 164 on the circuit board 160 , and the pressing surface 124 can contact the heating component 164 to take away the heat generated by the heating component 164 in real time.

Referring to FIG. 4 , it shows a schematic diagram of another embodiment of the circuit board fixing mechanism of the present invention. The circuit board fixing mechanism is applied in the notebook computer 200, wherein the first housing 100 is the rear frame of the notebook computer display, especially the metal part of the rear frame. The liquid crystal display panel 210 is disposed in the first casing 100 , and the circuit board 160 is located on the periphery of the liquid crystal display panel 210 .

The first housing 100 has a bottom surface 110 and a clamping part 120 . The clamping member 120 includes a pressing surface 124 , and there is a gap between the pressing surface 124 and the bottom surface 110 . The circuit board 160 can be accommodated in the gap, and the pressing surface 124 contacts the circuit board 160 to limit the displacement of the circuit board 160 in the z direction.

The first housing 100 further includes a protruding rib 130 disposed on the bottom surface 110 . The position of the protruding rib 130 is corresponding to the edge of the circuit board 160 . After the circuit board 160 is placed in the gap g, the rib 130 can contact the side of the circuit board 160 to limit the displacement of the circuit board 160 in the x direction. The circuit board 160 is provided with a hole 162 , and the first casing 100 includes a bump 140 provided on the bottom surface 110 . The positions of the bumps 140 correspond to the holes 162 on the circuit board 160 , so as to be engaged with the holes 162 to position the circuit board 160 during assembly.

Referring to FIG. 4 and FIG. 5 at the same time, FIG. 5 shows a schematic diagram of the second housing 180 matched with the first housing 100 in FIG. 4 . The second housing 180 also has a plurality of retaining walls 182, the retaining walls 182 extend toward the direction of the first housing 100, the positions of the retaining walls 182 can be staggered from the positions of the ribs 130, so as to contact the circuit board 160 after the assembly is completed to limit the displacement of the circuit board 160 in the x-direction and y-direction. Protrusions 190 may be further provided on the second housing 180 , and the positions of the protrusions 190 correspond to the positions of the holes 162 on the circuit board 160 . The protrusions 190 can press the circuit board 160 and position the circuit board 160 during assembly. If the protruding point 140 is used together, it is helpful to prevent the hole 162 from breaking away from the protruding point 140 due to the impact of external force.

It can be known from the above preferred embodiments of the present invention that the application of the present invention has the following advantages. The first housing and the various components on it can be made in one piece, the circuit board is clamped between the holding member and the bottom surface, and the circuit board is fixed by the ribs, and the bumps on the first housing can be aligned with the circuit boards. The holes are engaged to position the circuit board. Compared with the previous method of fixing the circuit board on the housing with screws, the present invention can effectively reduce the cost of parts and the assembly man-hours. In addition, heat exchange is performed between the pressing surface and the circuit board, so that the heat generated by the circuit board is dissipated through the first casing, thereby achieving the effect of heat dissipation without additional use of a heat sink.

Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make various modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims (8)

1. circuit board fixing mechanism in order to a fixing circuit board, comprises:

One first housing comprises:

One bottom surface; And

One holder is arranged on this bottom surface, and this holder has a press face, and this press face is parallel to this bottom surface, has one between this press face and this bottom surface at interval, and wherein this circuit board is placed among this interval, and this this circuit board of press face contact is with the location.

2. circuit board fixing mechanism according to claim 1 also comprises at least one fin, is arranged at this bottom surface, and the side of this at least one this circuit board of fin contact is with the location.

3. circuit board fixing mechanism according to claim 1, wherein this circuit board comprises a heat generating component, this this heat generating component of press face contact.

4. circuit board fixing mechanism according to claim 1 also comprises a heat conductive pad, is arranged at the one side of this this circuit board of press face contact.

5. circuit board fixing mechanism according to claim 1, wherein this circuit board comprises a hole, and this first housing comprises a salient point that is arranged at this bottom surface, and this salient point engages with this hole.

6. circuit board fixing mechanism according to claim 1, wherein this press face has a guide ramp, and extend this bottom surface dorsad.

7. circuit board fixing mechanism according to claim 1 also comprises one second housing, and wherein this second housing comprises a plurality of barricades, and those barricades extend to this first housing, and the side that contacts this circuit board is with the location.

8. circuit board fixing mechanism according to claim 7, wherein this circuit board comprises plurality of holes, and this second housing comprises plurality of bump, and those projections are corresponding with the position in those holes.

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