TWI887996B - A circuit board fixation device - Google Patents

Abstract

A circuit board fixation device comprising a casing, a fixing component, and a fixing rod. The wall surface of the casing is equipped with an array of multiple perforations. Fixing component are positioned on the casing, and the fixing component comprises a first driving rod and a limiting component. The two ends of the first driving rod are pivotally mounted on the casing and the side panels of the limiting component, respectively. One end of the fixing rod is pivotally mounted on the wall surface of the casing, while the other end is equipped with a protrusion. When the circuit board is placed into the casing, the limiting component is moved to secure the circuit board, and then the protrusion is inserted into the groove on the side panel of the limiting component and into one of the corresponding multiple perforations, thereby fixing the limiting component. Therefore, this invention provides effective securing of the circuit board during installation and can accommodate various circuit board specifications.

Description

Circuit board fixing device

The present invention relates to an electronic device fixing component, in particular to a circuit board fixing device with good fixing effect.

There are two main ways to fix the PCIE (Peripheral Component Interconnect Express) bus interface card. One is to set a plastic clip on the I/O baffle at the front of the PCIE card and fix it by rotating the plastic clip to block the PCIE card. However, the disadvantage is that the tail end of the PCIE card is not fixed, and the material of the plastic clip is easy to deform, causing the PCIE card to be easily loose.

Another way to fix the PCIE card is to add a rotating sheet metal cover to the rear of the riser cage, and attach foam to the contact position between the cover and the PCIE card to prevent contact with the electronic components on the PCIE card, and rotate it downward and lock it during installation. However, the disadvantage is that due to the movement of the shaft structure, the PCIE card near the shaft will be squeezed, and it can only support a single specification of PCIE cards.

Therefore, if a circuit board fixing device that is easy to disassemble and assemble, has a stable fixing structure, does not deform, and can be applied to circuit boards of various specifications can be invented, the above problems can be effectively improved.

The main purpose of the present invention is to provide a circuit board fixing device which has good guiding and fastening effects and can meet various circuit board specifications.

To achieve the above-mentioned purpose, the present invention provides a circuit board fixing device, including an opening on a mounting shell, the opening is connected to a fixed space in the mounting shell, and a plurality of arranged through holes are arranged on a wall surface of the mounting shell. A fixing assembly is arranged on the mounting shell, wherein the fixing assembly includes: a first end of a first driving rod is pivoted on the mounting shell and close to the opening; a limiter includes a limiter plate and a first side plate, a first side plate is vertically arranged on the limiter plate, a second end of the first driving rod is pivoted on the first side plate, and a groove is further arranged on the first side plate; a first end of a fixing rod is pivoted on the wall surface of the mounting shell, and a protrusion is arranged on the second end of the fixing rod to penetrate one of the plurality of through holes and be fixed in the groove to fix the limiter.

In this embodiment, the fixing assembly further includes at least one fixing rail, which is arranged on the limiting plate. The fixing rail includes: a body arranged on the limiting plate; at least one fixing boss arranged on one side of the body, and the fixing boss is passed through and fixed on the limiting plate; a guiding groove is arranged on the body, and is opposite to the other side where the fixing boss is arranged.

In this embodiment, the fixed guide rail further includes an elastic member, which is sleeved on the fixed boss and located between the main body and the limiting plate.

In this embodiment, the plurality of perforations are arranged gradually away from the opening.

In this embodiment, the fixing rod is an elastic conductive fixing rod.

In this embodiment, the circuit board fixing device further includes a deformation sensor disposed on the fixing rod. When the deformation sensor senses deformation of the fixing rod, a deformation signal is emitted.

In this embodiment, the circuit board fixing device further includes a controller connected to the deformation sensor to receive the deformation signal and generate a warning signal according to the deformation signal.

In this embodiment, a handle is provided at the second end of the fixing rod, and the handle is arranged on the other side of the protrusion.

In this embodiment, the limiting element further includes a second side plate, which is disposed on the limiting plate and is disposed opposite to the first side plate. The fixing assembly further includes a second driving rod, which is pivoted on the mounting housing and close to the opening, and is opposite to the other side of the first driving rod, and the second end of the second driving rod is pivoted on the second side plate.

In this embodiment, the first drive rod is offset from the second drive rod.

1: Circuit board fixing device

10: Install the shell

12: Open mouth

14: Fixed space

16: Wall

17: Mounting plate

18: Perforation

20:Fixed components

22: First drive rod

220: First end

222: Second end

22’: Second driving rod

220’: First end

222’: Second end

24: Limiting parts

240: Limiting plate

242: First side panel

242’: Second side panel

244: Groove

26: Fixed rails

260:Entity

262:Fixed boss

262a: Hook

264:Guide groove

266: Elastic parts

30: Fixed rod

32: First end

34: Second end

36: Bump

38:Handle piece

40: Deformation sensor

42: Controller

50: Circuit board

Figure 1 is a three-dimensional diagram of an embodiment of the present invention.

Figure 2 is a component exploded view of an embodiment of the present invention.

Figure 3 is a cross-sectional schematic diagram of the implementation of the present invention.

Figure 4 is a block diagram of the present invention.

Figures 5 to 7 are schematic diagrams of the continuous use status of the embodiment of the present invention.

In order to facilitate ordinary technical personnel in this field to understand and implement the present invention, the present invention is further described in detail below in combination with the attached drawings and embodiments. It should be understood that the embodiments described here are only used to illustrate and explain the present invention, and are not used to limit the present invention.

The present invention is a circuit board fixing device, which can be used to install a circuit board, so as to install the circuit board in an electronic device, thereby expanding the performance of the electronic device. The electronic device can be a server or a computer, and the circuit board can be a bus switch card (PCI Express, PCIe), which can be used to connect the processor and other key components such as a display card, hard drive and network card in the electronic device to provide functions such as high-speed data transmission.

Please refer to Figures 1 to 3 to illustrate the structure of the circuit board fixing device of this embodiment. The circuit board fixing device 1 includes a mounting shell 10, a fixing assembly 20 and a fixing rod 30. The mounting shell 10 has an opening 12, and the opening 12 is connected to a fixing space 14 in the mounting shell 10. In this embodiment, the mounting shell 10 is a rectangular parallelepiped, a wall 16 on the mounting shell 10 is arranged perpendicular to the opening 12 in the Y-axis direction, and a mounting plate 17 is arranged perpendicular to the opening 12 in the Y-axis direction, and the mounting plate 17 is arranged opposite to the wall 16. A plurality of through holes 18 are arranged on the wall 16. The plurality of through holes 18 are arranged on the wall 16 gradually away from the opening 12, and the plurality of through holes 18 are arranged along an arc path grid. In this embodiment, the second end 34 of the fixing rod 30 moves along an arc path. The plurality of through holes 18 are arranged at intervals on the arc path.

The fixing assembly 20 is disposed on the mounting housing 10, and the fixing assembly 20 includes a first driving rod 22, a second driving rod 22', a stopper 24 and at least one fixed guide rail 26. The first driving rod 22 and the second driving rod 22' are disposed on the mounting housing 10, and the stopper 24 connects the first driving rod 22 and the second driving rod 22'. The stopper 24 includes a stopper plate 240, a first side plate 242 and a second side plate 242'. A groove 244 is disposed on the first side plate 242. In this embodiment, the stopper plate 240 may be rectangular. The stopper plate 240 is disposed perpendicular to the first side plate 242, that is, the stopper plate 240 is disposed perpendicular to the first side plate 242 in the Z-axis direction. The second side plate 242' is disposed opposite to the first side plate 242 in the Z-axis direction, and the second side plate 242' is also perpendicular to the limiting plate 240 in the Y-axis direction.

The fixed guide rail 26 is disposed on the limiting plate 240. The fixed guide rail 26 is extended in the X-axis direction and is disposed on the limiting plate 240. The fixed guide rail 26 includes a body 260, at least one fixed boss 262, a guide groove 264 and at least one elastic member 266. The fixed boss 262 is disposed on one side of the body 260, and the fixed boss 262 is penetrated through the limiting plate 240 to fix the body 260 on the limiting plate 240. In this embodiment, a hook 262a is further disposed at one end of the fixed boss 262 that penetrates through the limiting plate 240, which can limit the fixed boss 262 from detaching from the limiting plate 240. The guide groove 264 is disposed on the body 260, and is opposite to the other side where the fixed boss 262 is disposed. In this embodiment, the guide groove 264 matches the shape of the circuit board to achieve the function of fixing the circuit board and limiting the position of the circuit board. The elastic member 266 is sleeved on the fixed boss 262 and is located between the body 260 and the limiting plate 240. In this embodiment, the elastic member 266 is a spring.

The first driving rod 22 of the fixing assembly 20 has a first end 220 and a second end 222 opposite to each other, and the first end 220 is pivoted on the mounting housing 10 and close to the opening 12. The second end 222 of the first driving rod 22 is pivoted on the side plate 240 of the stopper 24. In this embodiment, there is a second driving rod 22', including a first end 220' and a second end 222', wherein the first end 220' of the second driving rod 22' is pivoted on the mounting plate 17, and the second end 222' is pivoted on the side plate 240' of the stopper 24. The second driving rod 22' is parallel to the first driving rod 22, but the first driving rod is offset from the second driving rod.

In this embodiment, the first end 220' of the second drive rod 22' is pivoted at the position of the mounting plate 17, separated from the first end 220 of the first drive rod 22, and is not on the same Z-axis straight line, and is set in a staggered manner. The second end 222' of the second drive rod 22' is pivoted at the position of the side plate 240', and is not on the same Z-axis straight line as the position of the first drive rod 22 pivoted on the side plate 240, and is set in a staggered manner. If the rotation axes of the first drive rod 22 and the second drive rod 22' are on the same Z-axis straight line and are not staggered, the limiter 24 will rotate because the freedom of rotation is not restricted. However, the offset of the upper and lower first driving rod 22 and the second driving rod 22' in this embodiment can limit the rotational freedom due to the structure, so that the support surface of the limiter 24 can maintain horizontal movement, achieving the effect of making the limiter 24 move parallel to the XY plane. At the same time, the first driving rod 22 and the second driving rod 22' have the same structure and can be installed interchangeably to reduce factory assembly errors.

The fixing rod 30 has a first end 32 and a second end 34 opposite to each other. The first end 32 of the fixing rod 30 is pivoted on the wall 16 of the mounting shell 10. In the present embodiment, the fixing rod 30 is disposed on the wall 16 on the same surface as the through hole 18. The first end 32 of the fixing rod 30 can be fixed to the wall 16 by riveting. The second end 34 of the fixing rod 30 is provided with a protrusion 36, which extends along the Z-axis direction to penetrate one of the plurality of through holes 18 on the mounting shell 10 and is fixed in the groove 244 of the limiter 24 to achieve the function of fixing the limiter 24. The second end 34 of the fixing rod 30 is further provided with a handle 38, and the handle 38 is disposed on the other side of the protrusion 36 and extends in the Z-axis direction in the opposite direction of the protrusion 36. The fixing rod 30 may be an elastic conductive fixing rod, and the material of the fixing rod 30 may be a conductive metal, such as iron.

In addition to the above structure, please refer to Figures 1 to 4. The circuit board fixing device 1 of this embodiment further includes a deformation sensor 40 and a controller 42. In this embodiment, the deformation sensor 40 is a sheet structure. The deformation sensor 40 is arranged on the fixing rod 30 and is connected to the controller 42 by signal to sense whether the fixing rod 30 is deformed and transmit the detection result to the controller 42. In this embodiment, the deformation sensor 40 can be a strain gauge, and the controller 42 can be a computer with a light bulb, a light-emitting diode (LED), a speaker or a screen. The controller 42 can be an external device.

The strain gauge uses the strain gauge effect. When an object is deformed, the resistance will change. Therefore, the strain gauge can judge whether the detected object is deformed by the change of resistance. In this embodiment, the deformation sensor 40 is arranged on the fixed rod 30, and the fixed rod 30 is an elastic and conductive material. Therefore, when the deformation sensor 40 senses that the fixed rod 30 is deformed, a deformation signal is generated to the controller 42, and the controller 42 can generate a warning signal according to the deformation signal. The controller 42 is provided with a light bulb, a light-emitting diode, a speaker or a screen. When the warning signal is generated, the controller 42 can control the light bulb or the light-emitting diode to flash, or control the screen to pop up a message, or control the speaker to emit a warning sound, etc. to issue a reminder.

After explaining the structure of the circuit board fixing device 1 of this embodiment, please refer to Figures 5 to 7 to explain the use of the circuit board fixing device 1 to install the circuit board. The circuit board in this embodiment is a bus switch card (Peripheral Component Interconnect Express, PCIE). First, please refer to Figure 5, and place the circuit board 50 into the fixing space 14 through the opening 12. Then, please refer to Figure 6 and refer to Figure 3, and pull up the fixing rod 30 through the handle 38 to make the protrusion 36 leave the through hole 18. Then push the fixing assembly 20 into the fixing space 14, until the circuit board 50 is engaged with the guide groove 264 of the fixing guide rail 26. Since the guide groove 264 matches the shape of the circuit board 50, it can effectively limit the circuit board 50 and provide effective support for the circuit board 50 to prevent the circuit board 50 from bending. The setting of the fixed guide rail 26 can also achieve the effect of parallel guidance. The setting of the elastic member 266 can achieve a buffering effect, and at the same time can solve the problem of manufacturing and assembly tolerances, and effectively ensure the contact between the fixed guide rail 26 and the circuit board 50.

Next, please refer to FIG. 7 and FIG. 3. Adjust the stopper 24 so that the circuit board 50 is engaged with the guide groove 264. At the same time, align the groove 244 with the position of one of the plurality of through holes 18. Then, adjust the fixing rod 30 so that the protrusion 36 is inserted into the groove 244 and the corresponding one of the plurality of through holes 18. This locks the position of the stopper 24 to fix the circuit board 50.

The present embodiment is provided with a plurality of through holes 18 to achieve the effect of fixing circuit boards 50 of various specifications. For example, if the PCIE card specification is half-height, it is a smaller PCIE card, and the bump 36 is buckled on the through hole 18 farthest from the opening 12. If the PCIE card specification is full-height, it is a larger PCIE card, and the bump 36 is buckled on the through hole 18 closest to the opening 12. Therefore, the circuit board fixing device 1 of the present embodiment can meet the specifications of installing various circuit boards.

Please refer to Figure 7 and Figure 4. If the user does not put the bump 36 into the through hole 18 when fixing the circuit board 50, the fixing rod 30 will be deformed. At this time, the deformation sensor 40 senses the deformation of the fixing rod 30 and generates a deformation signal to the controller 42. The controller 42 can generate a warning signal based on the deformation signal. The controller 42 can flash a light through a bulb or a light-emitting diode, or pop up a message on the screen, or control the speaker to emit a warning sound to remind the user to adjust the fixing rod 30.

In summary, the present invention has good parallel guiding effect and tightening effect, and can meet the specifications of various circuit boards. In addition, when the fixing rod is detached, it can also warn the user that the circuit board is not effectively fixed.

In summary, this invention meets the patent requirements and a patent application is filed in accordance with the law. However, the above is only the preferred implementation of this invention, and the scope of this invention is not limited to the above implementation. Any equivalent modifications or changes made by people familiar with the art of this case in accordance with the spirit of this invention should be covered within the scope of the following patent application.

1: Circuit board fixing device

10: Install the shell

12: Open mouth

14: Fixed space

16: Wall

17: Mounting plate

18: Perforation

20:Fixed components

22: First drive rod

220: First end

222: Second end

22’: Second driving rod

220’: First end

24: Limiting parts

240: Limiting plate

242: First side panel

242’: Second side panel

262a: Hook

30: Fixed rod

32: First end

34: Second end

38:Handle piece

Claims (10)

A circuit board fixing device, comprising: a mounting shell, the mounting shell having an opening, the opening connected to a fixed space in the mounting shell, a wall of the mounting shell having a plurality of arranged through holes; a fixing assembly, arranged on the mounting shell, the fixing assembly comprising: a first driving rod, the first end of the first driving rod pivoting on the mounting shell and close to the opening; and a limiting member, comprising a limiting plate and a first side plate, the first side plate being vertically arranged on the limiting plate, the second end of the first driving rod pivoting on the first side plate, the first side plate further having a groove; and A fixing rod, the first end of which is pivoted on the wall of the mounting shell, and the second end of which is provided with a protrusion to penetrate one of the through holes and be fixed in the groove to fix the limiting member. A circuit board fixing device as described in claim 1, wherein the fixing assembly further includes at least one fixing rail disposed on the limiting plate, and the fixing rail includes: a body disposed on the limiting plate; at least one fixing boss disposed on one side of the body, and the fixing boss is passed through and fixed on the limiting plate; and a guiding groove disposed on the body, and opposite to the other side where the fixing boss is disposed. A circuit board fixing device as described in claim 2, wherein the fixing rail further includes an elastic member, which is sleeved on the fixing boss and located between the main body and the limiting plate. A circuit board fixing device as described in claim 1, wherein the through holes are arranged gradually away from the opening. A circuit board fixing device as described in claim 1, wherein the fixing rod is an elastic conductive fixing rod. The circuit board fixing device as described in claim 5 further includes a deformation sensor disposed on the fixing rod, and when the deformation sensor senses deformation of the fixing rod, it sends a deformation signal. The circuit board fixing device as described in claim 6 further includes a controller connected to the deformation sensor to receive the deformation signal and generate a warning signal based on the deformation signal. A circuit board fixing device as described in claim 1, wherein the second end of the fixing rod is provided with a handle, and the handle is arranged on the other side of the protrusion opposite to the protrusion. A circuit board fixing device as described in claim 1, wherein the limiting member further includes a second side plate, which is arranged on the limiting plate and is arranged relative to the first side plate; the fixing assembly further includes a second driving rod, the first end of which is pivoted on the mounting shell and close to the opening, and the second end of which is pivoted on the second side plate relative to the other side of the first driving rod. A circuit board fixing device as described in claim 9, wherein the first driving rod is offset from the second driving rod.