CN201319719Y - Radiator component and radiator-fixing device - Google Patents

Abstract

The utility model provides a radiator assembly and a radiator fixing device. The radiator assembly includes a radiator and a fixing device. The radiator includes a base and cooling fins. The fixing device includes several fixing fins. Each of the There are at least two fixed points on the fixing sheet, which are respectively used to connect and fix the base of the heat sink and the printed circuit board. The fixing point of the fixing piece or the fixing point of the fixing piece and the printed circuit board, so as to fix the heat sink on the printed circuit board with the mounting hole. The radiator assembly and the radiator fixing device of the utility model can improve the versatility of the radiator assembly and the radiator fixing device.

Description

Radiator assembly and radiator fixing device

technical field

The utility model relates to a radiator in a communication equipment printed circuit board, in particular to a radiator assembly and a radiator fixing device.

Background technique

With the vigorous development of the electronics industry and the wide application of large-scale integrated circuits, the operating speed and integration of computer chips are getting higher and higher. Improving product functions also brings higher heat generation. If the heat is not timely Emission will affect the performance of the chip or even damage the chip. The industry usually installs a heat sink on the chip to conduct heat away, and the installation of the heat sink is usually fixed on the PCB with screws, and the heat sink is in close contact with the chip. This method usually requires opening mounting holes at the positions corresponding to the heat sink and the PCB, and fixing them with screws.

The disadvantage of the existing technology is that the opening position of the heat sink needs to correspond to the opening position of the PCB, and the positions of the mounting holes are different for different PCB layouts, resulting in the design of many kinds of heat dissipation for the same chip. In the case of heat sinks, not only repeated design is required, but also the efficiency and versatility are very low; in addition, this fixing method makes the heat sink, chip and PCB a dead connection, and the pressure on the contact surface between the heat sink and the chip is difficult to control, causing crushing. Problems with chips or insufficient pressure.

Utility model content

The technical problem to be solved by the utility model is to provide a radiator assembly and a radiator fixing device, so as to improve the versatility of the radiator assembly and the radiator fixing device.

In order to solve the above problems, the utility model provides a radiator assembly, which includes a radiator and a fixing device, the radiator includes a base and cooling fins, and the fixing device includes several fixing fins, each of which There are at least two fixed points on the fixing sheet, which are respectively used to connect and fix the base of the heat sink and the printed circuit board. The fixing point of the fixing sheet or the fixing point of the fixing sheet and the printed circuit board, so as to fix the heat sink on the printed circuit board with mounting holes.

Further, after the fixing device fixes the heat sink on the printed circuit board, the fixing point of the fixing piece on the base meets the following conditions: there are at least one fixed point.

Further, the fixing device also includes a guide piece, the base is provided with a guide rail, one end of the guide piece is inserted into the guide rail and can slide along the guide rail, and the other end is provided with a fixing hole for aligning with the mounting hole of the printed circuit board and fixed.

Further, the fixing piece has a fixing hole, and the fixing device also includes a stud and a screw, and the stud is used to pass through the fixing hole and the mounting hole of the printed circuit board to fix the fixing piece on the printed circuit board .

Further, the fixing device further includes a spring, and the spring is used to be sleeved on the stud, and when the radiator is fixed, the two ends of the spring abut against the screw and the fixing piece respectively.

Further, the cross-sectional profile of the fixing hole and the stud is waist-shaped, so as to prevent the stud from rotating.

In order to solve the above technical problems, the present invention also provides a radiator fixing device, which is used to fix the radiator on the printed circuit board, the fixing device includes several fixing pieces, and each fixing piece has at least Two fixing points are respectively used to connect and fix the base of the heat sink and the printed circuit board, and the fixed piece is provided with a sliding groove for slidingly adjusting the fixed point between the fixed piece and the printed circuit board, so as to fix the heat sink on a mounting holes on the printed circuit board.

Further, after the fixing device fixes the heat sink on the printed circuit board, the fixing point of the fixing piece on the base meets the following conditions: there are at least one fixed point.

Further, the fixing device also includes a guide piece, the base is provided with a guide rail, one end of the guide piece is inserted into the guide rail and can slide along the guide rail, and the other end is provided with a fixing hole for aligning with the mounting hole of the printed circuit board and fixed.

Further, the fixing piece has a fixing hole, and the fixing device also includes a stud and a screw, and the stud is used to pass through the fixing hole and the mounting hole of the printed circuit board to fix the fixing piece on the printed circuit board .

Compared with the prior art, the radiator assembly and the radiator fixing device of the utility model use sliding grooves to make the positions of the fixing piece and the guide piece adjustable, so as to realize the reliable installation of the radiator when the position of the PCB mounting hole changes, and avoid repeated Design the heat sink, reduce the design cost, and have the characteristics of versatility.

Description of drawings

Figure 1 is an exploded view of the assembly of the radiator assembly and the PCB of the present invention.

Fig. 2 is a top view of the radiator assembly of the present invention.

Fig. 3 is a schematic cross-sectional view of the radiator of the present invention.

Fig. 4 is an exploded view of the partial assembly of the guide plate of the radiator assembly of the present invention.

Fig. 5 is an exploded view of a part of the assembly of the fixing plate of the radiator assembly of the present invention.

Fig. 6 is a partial sectional view of the overall assembly of the radiator of the present invention.

Detailed ways

The radiator assembly of the utility model includes a radiator and a fixing device. The radiator is installed and fixed on a printed circuit board provided with mounting holes by using the fixing device. When installing, it has the characteristics of adjustable fixed hole distance and floating pressure, as shown in Figure 1 , the heat sink includes a base 1 and a heat sink, wherein the base 1 is a flat cube, along two opposite sides thereof there are sliding grooves 11 (as shown in Figure 2 ) that run through the upper, lower and side surfaces of the base, along the The other two opposite sides are provided with guide rails 12 with side openings, the guide rails have a T-shaped section, as shown in Figure 2, and have T-shaped openings on the sides perpendicular to the guide rails 12 for inserting guide pieces.

The fixing device for fixing the heat sink on the printed circuit board includes a fixing piece 2, a guide piece 3, a spring 4, a stud 5, screws and the like.

The fixed piece 2 is a sheet structure, its thickness is smaller than the side opening of the sliding groove 11, and there are fixing holes at both ends. After one end is inserted into the side opening of the sliding groove 11, after the fixing hole is aligned with the upper and lower openings of the sliding groove, it can be connected and fixed by screws or the like. On the heat sink, and one end of the fixing sheet 2 inserted into the sliding groove can slide along the sliding groove, so that the fixing hole at the other end can be aligned with the mounting hole on the printed circuit board and fixed.

The guide piece 3 is also roughly in the shape of a sheet, with a protruding small cylinder (as shown in FIG. 3 ) at one end and a fixing hole at the other end. The guide piece has one end of a small cylinder that is consistent with the shape of the guide rail. It can be inserted into the guide rail from the T-shaped opening on the side and slide along the guide rail. Through the sliding of the guide piece, the fixing hole at the other end of the guide piece can be aligned with the mounting hole on the printed circuit board. Align to fix.

The movement tracks of the fixed fins and guide fins of the radiator shown in Figure 2 can be adjusted by adjusting the fixed fins and guide fins to adjust the installation position of the radiator to achieve the purpose of generalization.

The fixing holes of the above fixed piece 2 and the guide piece 3 are waist-shaped, and correspondingly, the cross-section of the stud for fixing the fixed piece 2 and the guide piece 3 is also waist-shaped, and is used for matching with the fixed hole. The center of the column is provided with a through hole thread. The fixing holes of the guide piece 3 and the fixing piece 2 and the cross-sectional profile of the stud 3 are waist-shaped and have the effect of preventing the stud from turning around.

The stud assembly structure composed of the stud 3, the spring 4, and the screw 5 realizes the fixing of the fixed piece 2 and the guide piece 3.

Figure 4 is an exploded view of the partial assembly of the guide piece. During assembly, one end of the guide piece penetrates into the guide rail 12 of the base 1; Tighten the screws.

Figure 5 is an exploded view of part of the assembly of the fixed piece, one end of which penetrates into the sliding groove of the base 1 and is fastened through the fixing hole with a screw; the other end is assembled in the same way as the guide piece.

When assembling, adjust the position of the radiator fixing piece and the guide piece to ensure that the center of the radiator stud corresponds to the center of the mounting hole on the PCB, then screw the screw from the back of the PCB through the mounting hole into the stud, and finally tighten the two screws. The screws on the two fixed pieces can be reliably fixed.

Fig. 6 is a partial sectional view of the overall assembly, in which is a schematic diagram of the overall assembly of the radiator assembly, the chip 6, and the printed circuit board PCB7, the spring 4 is set on the stud 5 and is compressed between the screw and the guide piece 3 at the same time, The pressure of the spring is transmitted to the profile heat sink 1 through the guide plate, and finally acts on the chip to ensure a certain contact pressure between the heat sink and the chip, increase the heat dissipation of heat conduction, and improve the reliability of heat dissipation of the chip.

The radiator assembly of the utility model uses sliding grooves to make the positions of the fixing piece and the guide piece adjustable, thereby realizing reliable installation of the radiator when the position of the PCB installation hole changes, avoiding repeated design of the radiator, reducing design costs, and having versatility The function of the stud assembly is to make the heat sink exert an appropriate contact pressure on the chip. By accurately calculating the spring pressure, the reliability of the contact pressure can be guaranteed, and the effect of conduction and heat dissipation can be improved, so that the hole distance can be adjusted and the pressure can be adjusted during installation. floating effect.

Except that the guide rail cross section of the guide piece 21 can be a positive T shape as shown in the figure, it can also be transformed into a transverse T shape or a bent shape, that is, the cross section has grooves in at least two directions. Correspondingly, the guide piece and the guide rail The matching end conforms to the shape of the guide rail, so that the guide piece 21 will not fall off after being inserted into the guide rail 12 .

In addition to the fixing method of fixing pieces and guide pieces, the radiator assembly of the present invention can also be fixed by setting four sliding grooves on the radiator base and using four fixing pieces, or starting from two opposite sides. Sliding grooves, two fixing pieces are fixed on each sliding groove, and after the heat sink is fixed on the printed circuit board by the fixing device, the fixing point of the fixing piece on the base meets the following conditions: the center of the base and any There is at least one fixed point on both sides of the connection line of the fixed point. As long as this condition is met, the heat sink can also be reliably fixed on the printed circuit board through the three fixed pieces.

Based on the same principle, if the fixed point of the fixed piece at one end of the heat sink is relatively fixed, the fixed piece can rotate around the fixed point at the same time, and there is a sliding groove on the fixed piece for the other end to be fixed on the PCB. After the sliding groove of the fixed piece and the installation hole on the printed circuit board, the two fixed points of the fixed piece are fixed, and the purpose of the utility model can be realized equally.

The radiator assembly and the radiator fixing device of the utility model solve the problems of universal installation and contact pressure control of the radiator, and have the characteristics of improving versatility, reducing design cost and improving reliability.

Of course, the utility model can also have other embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model. All changes and deformations should belong to the scope of protection of the appended claims of the utility model.

Claims (10)

1, a kind of heat sink assembly, this heat sink assembly comprises radiator and fixture, radiator comprises pedestal and fin, it is characterized in that, described fixture comprises several stators, have at least two fixing points on described each stator, be respectively applied for and be connected and fixed radiator base and printed circuit board (PCB), described pedestal offers sliding tray or described stator is offered sliding tray, be used for the fixing point of described radiator of slidable adjustment and described stator or the fixing point of described stator and printed circuit board (PCB), so that radiator is fixed on the printed circuit board (PCB) with installing hole.

2, heat sink assembly as claimed in claim 1, it is characterized in that: after described fixture was fixed on radiator on the printed circuit board (PCB), described stator met the following conditions at the fixing point of pedestal: in the line both sides of pedestal center and arbitrary fixing point a fixing point is arranged at least respectively.

3, heat sink assembly as claimed in claim 1, it is characterized in that: described fixture also comprises prerotation vane, and described pedestal is provided with guide rail, and described prerotation vane one end inserts guide rail and can slide along guide rail, the other end is provided with fixing hole, is used for aliging with the printed circuit board (PCB) installing hole and fixing.

4, heat sink assembly as claimed in claim 1, it is characterized in that: described stator has fixing hole, described fixture also comprises double-screw bolt and screw, and the installing hole that described double-screw bolt is used to pass fixing hole and printed circuit board (PCB) is fixed on printed circuit board (PCB) with described stator.

5, heat sink assembly as claimed in claim 4 is characterized in that: described fixture also comprises spring, and described spring is used to be enclosed within double-screw bolt, and during fixed heat sink, two ends are connected to respectively on screw and the stator.

6, heat sink assembly as claimed in claim 4 is characterized in that: described fixing hole and double-screw bolt cross-sectional profiles all are oval shape, rotate to prevent double-screw bolt.

7, a kind of fixer for heat radiator, this fixture is used for radiator is fixed on printed circuit board (PCB), it is characterized in that, described fixture comprises several stators, have at least two fixing points on described each stator, be respectively applied for and be connected and fixed radiator base and printed circuit board (PCB), described stator is offered sliding tray, the fixing point that is used for described stator of slidable adjustment and printed circuit board (PCB) is to be fixed on radiator on the printed circuit board (PCB) with installing hole.

8, fixer for heat radiator as claimed in claim 1, it is characterized in that: after described fixture was fixed on radiator on the printed circuit board (PCB), described stator met the following conditions at the fixing point of pedestal: in the line both sides of pedestal center and arbitrary fixing point a fixing point is arranged at least respectively.

9, fixer for heat radiator as claimed in claim 1, it is characterized in that: described fixture also comprises prerotation vane, and described pedestal is provided with guide rail, and described prerotation vane one end inserts guide rail and can slide along guide rail, the other end is provided with fixing hole, is used for aliging with the printed circuit board (PCB) installing hole and fixing.

10, fixer for heat radiator as claimed in claim 1, it is characterized in that: described stator has fixing hole, described fixture also comprises double-screw bolt and screw, and the installing hole that described double-screw bolt is used to pass fixing hole and printed circuit board (PCB) is fixed on printed circuit board (PCB) with described stator.

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