CN217011275U

CN217011275U - Circuit board for controlling floating height of radiating fin plug-in

Info

Publication number: CN217011275U
Application number: CN202220256303.XU
Authority: CN
Inventors: 何敏
Original assignee: Shenzhen Aitneng Technology Co ltd
Current assignee: Shenzhen Aitneng Technology Co ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-07-19
Anticipated expiration: 2032-02-08

Abstract

The utility model belongs to the technical field of circuit boards, and particularly relates to a circuit board for controlling floating height of a radiating fin plug-in unit, which comprises a PCB (printed circuit board) and a radiating fin, wherein the radiating fin is provided with a plug-in unit riveting pin, the PCB is provided with a plug-in unit hole position corresponding to the plug-in unit riveting pin, and the part of the plug-in unit riveting pin inserted into the PCB is provided with a hook part; the plug-in rivet pin between the radiating fin and the PCB in the circuit board for controlling the floating height of the radiating fin plug-in is simple in structure and low in cost, so that the radiating fin can be quickly installed on the PCB, the plug-in rivet pin has the advantages of being simple in assembly, good in performance, reliable in structure and the like, production efficiency is improved, and production quality of products is effectively improved.

Description

Circuit board for controlling floating height of radiating fin plug-in

Technical Field

The utility model belongs to the technical field of circuit boards, and particularly relates to a circuit board for controlling the floating height of a radiating fin plug-in unit.

Background

The radiating fin is used as an essential component of related products such as a battery charger, an adapter, high-power supply equipment and the like, and is generally used for fixing electronic devices such as a diode, a triode, an NMOS (N-channel metal oxide semiconductor), an MOS (metal oxide semiconductor), a bridge rectifier and the like on the radiating fin, and a radiating fin plug-in is fixed when a PCBA (printed circuit board assembly) passes through wave soldering so as to be used as a radiating structural component of an electronic chip, so that the radiating fin plays a vital role in equipment reliability, the radiating fin can generate floating height when the PCBA passes through the wave soldering, and the floating height of the radiating fin can seriously affect the shell assembly and the product structural performance due to the limited space in the battery charger and certain limitation on the height of the radiating fin.

At present, the furnace jig is usually adopted to press the radiating fins to control the floating height, the clamping jig is adopted to control the radiating fins to float high, although the effect is good, the manufacturing clamp jig is expensive, the abrasion loss of the clamp jig is large, the production efficiency is low, the cost is high, and the clamp jig needs to be installed manually, so that the processing cost of the circuit board is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circuit board for controlling the floating height of a radiating fin plug-in unit, which solves the technical problems that the floating height of a radiating fin can be generated when the circuit board is subjected to wave soldering in the prior art, the height of the radiating fin is limited to a certain extent due to the fact that a charger shell used for being installed in the circuit board is designed in advance, the space in the charger shell is limited, and the floating height of the radiating fin can influence the shell assembly and the product structural performance.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the circuit board comprises a PCB and a radiating fin, wherein a plug-in riveting pin is arranged on the radiating fin, a plug-in hole position corresponding to the plug-in riveting pin is arranged on the PCB, and a hook part is arranged at the part of the plug-in riveting pin inserted into the PCB; after the plug-in rivet pins of the radiating fin are inserted into the plug-in hole sites of the PCB, the hook parts of the plug-in rivet pins are made to bend through external force, and the hook parts clamp the soldering tin surface of the PCB, so that the radiating fin cannot float up and down and fall off.

Preferably, the plug-in rivet pin is riveted on the heat sink.

Preferably, the plug-in rivet pin is provided with a rivet hole, and the heat sink is correspondingly provided with a rivet protrusion.

Preferably, the insert rivet pin of the heat sink is made of iron tin plating.

Preferably, the insert hole sites are square in shape and have a size of 3.3 × 1.0 mm.

Preferably, the hook part of the plug rivet leg is 2.8mm long and 0.5mm wide.

Compared with the prior art, the utility model has the beneficial effects that:

1. the circuit board for controlling the floating height of the radiating fin plug-in comprises a PCB and a radiating fin, plug-in rivet pins are arranged on the radiating fin, plug-in hole positions corresponding to the plug-in rivet pins are arranged on the PCB, hook portions are arranged on the portions, inserted into the PCB, of the plug-in rivet pins of the radiating fin, after the plug-in rivet pins of the radiating fin are inserted into the plug-in hole positions of the PCB, hook portions of the plug-in rivet pins are bent, the hook portions clamp soldering tin surfaces of the PCB, when wave soldering is carried out, the radiating fin can not float up and down to fall off, and the problem that the floating height of the radiating fin plug-in can be effectively controlled to occur when the wave soldering is carried out is solved without using a furnace clamp jig and additional manpower.

2. The plug-in rivet pin between the radiating fin and the PCB in the circuit board for controlling the floating height of the radiating fin plug-in is simple in structure and low in cost, so that the radiating fin can be quickly installed on the PCB, the plug-in rivet pin has the advantages of being simple in assembly, good in performance, reliable in structure and the like, production efficiency is improved, and production quality of products is effectively improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic perspective view of a circuit board for controlling the floating height of a heat sink insert according to an embodiment of the present invention.

Fig. 2 is a side view of a first heat sink in an embodiment of the circuit board for controlling the elevation of the heat sink insert of the present invention.

FIG. 3 is an enlarged view of a portion of a first heat sink in an embodiment of the circuit board for controlling the floating height of the heat sink insert of the present invention.

FIG. 4 is a side view of a clip for controlling the floating height of a heat sink clip according to an embodiment of the present invention; fig. 4 (b) is a front view of the anchor of the heat sink plug-in unit in an embodiment of the circuit board for controlling the floating height of the heat sink plug-in unit according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A circuit board for controlling the floating height of a heat sink insert, please refer to fig. 1 to 4.

As shown in fig. 1, the circuit board for controlling the floating height of the heat sink plug-in unit comprises a PCB board 1 and heat sinks, in this embodiment, two heat sinks are provided, namely a first heat sink 2 and a second heat sink 3, and plug-in unit riveting pins are provided on the first heat sink 2 and the second heat sink 3.

Taking the first heat sink 2 as an example, two plug-in rivet pins 4 are disposed on the first heat sink 2, plug-in hole sites 5 corresponding to the plug-in rivet pins 4 are disposed on the PCB 1, as shown in fig. 2, hook portions 41 are disposed on the portions of the plug-in rivet pins 4 inserted into the PCB 1, and as shown in fig. 3, after the plug-in rivet pins of the first heat sink 2 are inserted into the plug-in hole sites 5 of the PCB 1, the hook portions 41 of the plug-in rivet pins 4 are bent by external force (such as twisting with pliers), and the plug-in rivet pins 4 of the first heat sink 2 are made of iron plated tin, so that deformation is relatively easy to occur, and the operation is convenient. The hook part 41 blocks the soldering tin surface of the PCB 1, so that the first heat sink 2 does not float up and down and fall off in the subsequent process.

Further, as shown in fig. 2, in the present embodiment, the plug-in rivet 4 is riveted to the first heat sink 2, and as shown in fig. 4, the plug-in rivet 4 is provided with a rivet hole 42, the first heat sink 2 is correspondingly provided with a rivet protrusion 21, and the plug-in rivet 4 is riveted to the rivet protrusion 21 of the first heat sink 2 by a riveting press machine.

As shown in fig. 3, the plug hole site 5 is square, and has a size of 3.3 × 1.0mm, i.e., a length of 3.3mm and a width of 1.0mm, and as shown in fig. 4, the hook portion of the plug rivet pin 42 has a length of 2.8mm and a width of 0.5mm, and can be smoothly inserted into the plug hole site 5.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A circuit board for controlling the floating height of a radiating fin plug-in unit comprises a PCB board and a radiating fin, and is characterized in that a plug-in unit riveting pin is arranged on the radiating fin, a plug-in unit hole position corresponding to the plug-in unit riveting pin is arranged on the PCB board, and a hook part is arranged at the part of the plug-in unit riveting pin inserted into the PCB board; after the plug-in rivet pins of the radiating fin are inserted into the plug-in hole positions of the PCB, the hook parts of the plug-in rivet pins are forced to bend through external force, and the hook parts clamp the soldering tin surface of the PCB, so that the radiating fin cannot float up and down and fall off.

2. The circuit board of claim 1, wherein: the plug-in rivet foot is riveted on the heat dissipation sheet.

3. The circuit board of claim 2, wherein: the plug-in rivet pins are provided with rivet fixing holes, and the radiating fins are correspondingly provided with rivet fixing bulges.

4. The circuit board of claim 1, wherein: the plug-in rivet pin of the radiating fin is made of iron tinning.

5. The circuit board of claim 1, wherein: the plug hole sites are square and 3.3 × 1.0mm in size.

6. The circuit board of claim 5, wherein: the length of the hook part of the plug-in rivet pin is 2.8mm, and the width of the hook part is 0.5 mm.