CN211959655U - Prevent PCB from beating radiator that screw warp - Google Patents

Abstract

The utility model relates to a radiator which can not only avoid the deformation of a printed circuit due to screw fastening, but also has good use effect and good applicability, and is used for preventing the deformation of a PCB (printed Circuit Board) caused by screw fastening; the lower end face of the transverse plate in the L-shaped supporting plate is provided with a first screw hole which penetrates through the upper end face and the lower end face of the transverse plate, and the lower end face of the transverse plate in the L-shaped supporting plate is provided with a second screw hole which penetrates through the upper end face and the lower end face of the transverse plate. The advantages are that: firstly, when the radiator and the printed circuit board are fixedly connected by screws, the radiator can prevent the printed circuit board body from being changed, thereby reducing the rejection rate of the printed circuit board; secondly, the radiator not only has good use effect, but also has good applicability.

Description

Prevent PCB from beating radiator that screw warp

Technical Field

The utility model relates to a not only can avoid printed circuit to appear warping because of the screw fastening, excellent in use effect moreover, the PCB of preventing that the suitability is good simultaneously beats the radiator that the screw warp belongs to the radiator field of making.

Background

The printed circuit board is a provider for electrical connection of electronic components, because some electronic components have higher heat generating property when in use, if the heat is not dissipated, a person can influence the service life of the electronic components, and if the heat is not dissipated, the service life of the printed circuit board can be influenced, and in practical use, a heat sink can be additionally arranged outside the electronic components with higher heat generating property for rapid heat dissipation, the heat sink as shown in fig. 1 and 2 is an existing electronic component heat sink for the printed circuit board, and comprises a substrate 1 ', wherein the upper end surface of the substrate 1' is provided with a plurality of heat dissipation fins 2 ', the lower end surface of the substrate 1' is provided with two support plates 3 ', the lower end surface of the substrate 1' is provided with a middle support plate 4 'and the middle support plate 4' is positioned between the two support plates 3 ', the lower end surface of the substrate 1' is provided with two screw holes 5 ', and the screw holes 5' penetrate through the upper end surface and the, one of the screw holes 5 'is located between the middle support plate 4' and the left support plate 3 ', and the other screw hole 5' is located between the middle support plate 4 'and the right support plate 3'; when the electronic component radiator is installed on a printed circuit board (the upper end face of the printed circuit board is provided with a heating electronic component), the lower end face of the middle supporting plate 4 ' and the lower end faces of the two supporting plates 3 ' are respectively contacted with the upper end face of the printed circuit board, the lower end face of the substrate is contacted with the upper end face of the heating electronic component, meanwhile, two screw through holes and two screw holes 5 ' on the printed circuit board are communicated one by one, and the printed circuit board and the electronic component radiator are fixedly connected by adopting two screws. Because the supporting plate 3 'is arranged between the substrate 1' and the printed circuit board, namely the screw for screwing the electronic component radiator and the printed circuit board is in a suspended state, the phenomenon that the printed copper foil is cracked due to the deformation of the body of the printed circuit board is easy to occur when the screw is fastened, and the printed circuit board is scrapped.

SUMMERY OF THE UTILITY MODEL

The design purpose is as follows: for avoiding not enough among the background art, design one kind not only can avoid printed circuit to appear warping because of the screw fastening, excellent in use effect prevents that PCB from beating the radiator that the screw warp moreover, and the suitability is good simultaneously.

The design scheme is as follows: the design purpose is realized.

1. The lower end face of the base plate is provided with an L-shaped supporting plate, the L-shaped supporting plate is positioned between the two supporting plates, and one of the supporting plates is L-shaped; the lower terminal surface of the diaphragm in the L shape backup pad is opened there is first screw hole, the lower terminal surface of the diaphragm in the backup pad that is L shape is opened the design that has the second screw hole, is one of the technical characteristics of the utility model. The purpose of this design is: firstly, when the radiator is assembled with the printed circuit board, the lower end face of the transverse plate of the L-shaped supporting plate and the lower end face of the transverse plate of the L-shaped supporting plate are in surface contact with the upper end face of the printed circuit board respectively, and the two screw through holes on the printed circuit board can be correspondingly communicated with the first screw hole and the second screw hole, so that the printed circuit board body can be prevented from being changed when the radiator and the printed circuit board are fixedly connected by screws, thereby reducing the rejection rate of the printed circuit board; secondly, as the lower end surface of the substrate is provided with the L-shaped supporting plate and the L-shaped supporting plate is positioned between the two supporting plates, the radiator can radiate heat for 2 heating electronic components at most at the same time; and thirdly, the first screw holes and the second screw holes are arranged on the transverse plate, so that the arrangement quantity and the arrangement positions of the radiating fins are not limited by avoiding the screw holes.

2. First screw hole is the bar hole, the second screw hole is the design in bar hole, is the utility model discloses a two technical characteristics. The purpose of this design is: first screw hole is the bar hole, the second screw hole is the bar hole, and the screw hole fluting of radiator is handled and is formed the width and the diameter of screw rod match and the bar hole that length is greater than the diameter of screw rod, makes things convenient for nimble deviation assembly like this (there is the deviation in screw hole on the radiator and the screw through-hole on the printed circuit board corresponding two holes when to the expert promptly, and this kind of deviation can be avoided in the setting in bar hole).

3. The design that the included angle department between the L-shaped backup pad and the base plate is equipped with protruding muscle is the third technical characteristic of the utility model. The purpose of this design is: the setting of protruding muscle not only can play the reinforcing action to the crossing angle department between the backup pad that is L shape and the base plate, and protruding muscle plays limiting displacement to heating elements and parts (when interval between protruding muscle and the L shape backup pad and this heating elements and parts's width or length match moreover).

4. The lower terminal surface of base plate is equipped with the design of two spacing sand grips, is the technical characteristic of the utility model is four. The purpose of this design is: two limit convex strips are arranged on the lower end face of the base plate, and the two sets of limit convex strips play a limiting role.

5. The lower terminal surface of base plate is opened has two screw holes and two screw holes to link up the upper and lower both ends face of base plate, and one of them screw hole is located and is between the backup pad and the L shape backup pad of L shape, and another screw hole is located the design between backup pad and the L shape backup pad, is the utility model discloses a five technical characteristics. The purpose of this design is: the lower terminal surface of base plate is opened and is had two screw holes and two screw holes to link up the upper and lower both ends face of base plate, and one of them screw hole is located and is between the backup pad and the L shape backup pad of L shape, and another screw hole is located between backup pad and the L shape backup pad, when the up end of the components and parts that generate heat and the lower terminal surface of base plate contactless, through set up the screw on corresponding the screw hole and realize the heat conduction contact between components and parts and the radiator that generate heat through screw or bolt (screw or bolt respectively with components and parts and radiator contact generate heat promptly) to improve the suitability of radiator.

The technical scheme is as follows: a radiator for preventing PCB from screwing deformation comprises a radiator body, wherein two support plates are oppositely arranged on the lower end face of a base plate in the radiator body, an L-shaped support plate is arranged on the lower end face of the base plate and positioned between the two support plates, and one support plate is L-shaped; the lower terminal surface of the diaphragm in the L-shaped backup pad is opened and is had first screw hole and first screw hole to link up the upper and lower both ends face of diaphragm, the lower terminal surface of the diaphragm in the backup pad that is the L-shaped is opened and is had second screw hole and second screw hole to link up the upper and lower both ends face of diaphragm.

Compared with the prior art, the utility model, firstly, a radiator for preventing the deformation of the PCB screw can avoid the change of the board body of the printed circuit board when the radiator and the printed circuit board are fixedly connected by the screw, thereby reducing the rejection rate of the printed circuit board; secondly, prevent that PCB from beating the radiator that the screw warp not only excellent in use effect, but also suitability is good.

Drawings

Fig. 1 is a schematic front view of a conventional heat sink for electronic components of a printed circuit board.

Fig. 2 is a schematic top view of a conventional heat sink for electronic components of a printed circuit board.

Fig. 3 is a schematic perspective view of a heat sink in a top view state for preventing deformation of a PCB due to screwing.

Fig. 4 is a schematic perspective view of a heat sink in a bottom view state for preventing deformation of a PCB due to screwing.

Detailed Description

Example 1: reference is made to fig. 3 and 4. A radiator for preventing a PCB from screwing and deforming comprises a radiator body 1, wherein two supporting plates 3 are oppositely arranged on the lower end face of a base plate 2 in the radiator body 1, an L-shaped supporting plate 4 is arranged on the lower end face of the base plate 2, the L-shaped supporting plate 4 is positioned between the two supporting plates 3, a transverse plate 41 in the L-shaped supporting plate 4 is positioned between the L-shaped supporting plate 4 and the supporting plate 3 (the supporting plate 3 is not provided with a transverse plate), the lower end face of the supporting plate 3 is flush with the lower end face of the transverse plate 41 in the L-shaped supporting plate 4, one of the supporting plates 3 is L-shaped, the transverse plate in the L-shaped supporting plate 3 is positioned between the supporting plate 3 and the L-shaped supporting plate 4, and the lower end face of the transverse plate is flush with the lower end face of the; a first screw hole 42 is formed in the lower end surface of the transverse plate 41 in the L-shaped supporting plate 4, the first screw hole 42 penetrates through the upper end surface and the lower end surface of the transverse plate 41, a second screw hole 31 is formed in the lower end surface of the transverse plate in the L-shaped supporting plate 3, and the second screw hole 31 penetrates through the upper end surface and the lower end surface of the transverse plate; two screw through holes on the printed circuit board can be correspondingly penetrated by the first screw holes 42 and the second screw holes 31 when the heat sink is assembled with the conventional printed circuit board described in the background art.

First screw hole 42 is the bar hole, and the width of first screw hole 42 matches and the length of first screw hole 42 is greater than the diameter of screw rod with the diameter of screw rod promptly, second screw hole 31 is the bar hole, and the width of second screw hole 31 matches and the length of first screw hole 42 is greater than the diameter of screw rod promptly with the diameter of screw rod.

The included angle department between backup pad 3 that is L shape and base plate 2 is equipped with protruding muscle 5, the length of protruding muscle 5 matches with the length of backup pad 3, the interval between protruding muscle 5 and the L shape backup pad 4 matches with the width or the length of waiting to dispel the heat electronic components one. The lower terminal surface of base plate 2 is equipped with two spacing sand grips 6 and two spacing sand grips 6 are located between L shape backup pad 4 and backup pad 3, interval between two spacing sand grips 6 matches with the width or the length of waiting to dispel the heat electronic components two.

The lower terminal surface of base plate 2 is opened has two screw holes 7 and two screw holes 7 to link up base plate 2's upper and lower both ends face, and one of them screw hole 7 is located and is L shape between backup pad 3 and the L shape backup pad 4 of L shape, and another screw hole 7 is located and is held between backup pad 3 and the L shape backup pad 4. The up end of base plate 2 is equipped with polylith fin 8, backup pad 3, L shape backup pad 4 and fin 8 are overall structure with base plate 2 respectively, and backup pad 3, L shape backup pad 4, fin 8 and base plate 2 are formed by integrative casting of aluminium promptly, and the heat radiating area that can the greatly increased radiator of setting up of fin 8 for the radiator realizes dispelling the heat fast.

It is to be understood that: although above-mentioned embodiment is right the utility model discloses a design has done more detailed word description, but these word descriptions, are only right the utility model relates to a simple word description of idea, rather than right the utility model relates to a restriction of idea, any do not surpass the utility model relates to a combination, increase or the modification of idea all fall into the utility model discloses a within the protection scope.

Claims (6)

1. The utility model provides a prevent PCB from beating radiator of screw deformation, includes radiator body (1), the lower terminal surface of base plate (2) in radiator body (1) is equipped with two backup pads (3), characterized by relatively: an L-shaped supporting plate (4) is arranged on the lower end face of the base plate (2), the L-shaped supporting plate (4) is positioned between the two supporting plates (3), and one of the supporting plates (3) is L-shaped; the lower terminal surface of diaphragm (41) in L shape backup pad (4) is opened and is had first screw hole (42) and first screw hole (42) to link up the upper and lower both ends face of diaphragm (41), the lower terminal surface of the diaphragm in backup pad (3) that is L shape is opened and is had second screw hole (31) and second screw hole (31) to link up the upper and lower both ends face of diaphragm.

2. The heat sink of claim 1, wherein the heat sink is capable of preventing the PCB from being deformed by screwing, and comprises: first screw hole (42) are the bar hole, second screw hole (31) are the bar hole.

3. The heat sink of claim 1, wherein the heat sink is capable of preventing the PCB from being deformed by screwing, and comprises: and a convex rib (5) is arranged at the included angle between the L-shaped supporting plate (3) and the base plate (2).

4. The heat sink of claim 1, wherein the heat sink is capable of preventing the PCB from being deformed by screwing, and comprises: the lower terminal surface of base plate (2) is equipped with two spacing sand grips (6) and two spacing sand grips (6) are located between L shape backup pad (4) and backup pad (3).

5. The heat sink of claim 1, wherein the heat sink is capable of preventing the PCB from being deformed by screwing, and comprises: the lower terminal surface of base plate (2) is opened and is had two screw holes (7) and two screw holes (7) to link up the upper and lower both ends face of base plate (2), and one of them screw hole (7) are located and are between backup pad (3) and the L shape backup pad (4) of L shape, and another screw hole (7) are located between backup pad (3) and the L shape backup pad (4).

6. The heat sink of claim 1, wherein the heat sink is capable of preventing the PCB from being deformed by screwing, and comprises: the upper end face of the base plate (2) is provided with a plurality of radiating fins (8), and the supporting plate (3), the L-shaped supporting plate (4) and the radiating fins (8) are respectively of an integral structure with the base plate (2).

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