CN211406631U

CN211406631U - Fixing structure of PCB and power adapter

Info

Publication number: CN211406631U
Application number: CN202020096783.9U
Authority: CN
Inventors: 王本欣
Original assignee: Chenzhou Furuikang Electronic Co ltd
Current assignee: Chenzhou Furuikang Electronic Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-09-01
Anticipated expiration: 2030-01-16

Abstract

The utility model relates to a fixing structure of a PCB and a power adapter, the fixing structure comprises a shell and the PCB arranged in the shell, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are provided with interference frameworks which are mutually matched; when the PCB is installed, the PCB is fixed in the shell by the interference framework. When the shell is opened, the interference framework is completely designed on the mold. During production, the PCB can be directly fixed in the shell through the interference framework, and the PCB is not required to be fixed in the shell through glue dispensing or screws. The production efficiency is high, the cost is low, and the market competitiveness is improved; and the installation is convenient, thereby improving the automation degree.

Description

Fixing structure of PCB and power adapter

Technical Field

The utility model relates to a power supply accessory technical field especially relates to a fixed knot of PCB board constructs and power adapter.

Background

The fixing mode of the shell of the wall-plugging type power adapter and the PCBA board used in the current market generally adopts glue dispensing fixing or screw fixing. The point is glued fixedly and is needed professional equipment, makes to glue through professional equipment and is in the liquid state, and liquid glue solidifies completely and needs more than 24 hours at least, in order to prevent that liquid glue from in the solidification process, takes place to remove and leads to fixed not in place, consequently needs a large amount of liquid glue to reach fixed effect when the operation, and not only with high costs, consuming time long, product quality is lower moreover. PCBA and casing locking are fixed together to the screw fixation needs, but the screw fixation needs to satisfy the safe distance requirement, can not overall arrangement circuit, components and parts in the space of 3mm at least around the screw position, leads to the product bulky, with high costs.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a fixed knot of PCB board constructs and power adapter aims at solving among the prior art PCB board and glues fixed or the technical problem that the screw fixation caused because of the point.

In order to solve the technical problem, the utility model provides a technical scheme does:

a fixing structure of a PCB comprises a shell and the PCB arranged in the shell, wherein the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are provided with interference frameworks which are matched with each other; when the PCB is installed, the PCB is fixed in the shell by the interference framework.

The inner side wall of the lower shell is provided with two opposite guide grooves, and the interference framework comprises a first framework arranged in the two guide grooves; when the PCB is vertically moved to the bottom surface of the lower shell along the guide groove, the PCB is respectively clamped between the two first frameworks and in the guide groove; the interference framework further comprises a second framework arranged on the bottom surface of the lower shell; when the PCB board is installed, the PCB board is clamped between the second framework and the upper shell.

Wherein, the distance between the two first skeletons is less than the length of the PCB by 0.1 mm.

Wherein, the width of the guide groove close to the bottom surface of the lower shell is 0.1mm less than the thickness of the PCB plate.

The interference framework comprises third frameworks arranged on the periphery of the inner side wall of the lower shell, limiting parts are arranged on the third frameworks, and when the PCB transversely moves to the limiting parts, the PCB is clamped between the limiting parts; the interference framework is further arranged on the fourth framework on the two opposite inner side walls of the lower shell, the fourth framework is located on the limiting portion, and when the PCB is installed, the PCB is tightly clamped between the limiting portion and the fourth framework.

The distance between the oppositely arranged limiting parts is smaller than the length or width of the PCB corresponding to the limiting parts by 0.1 mm.

Wherein, the distance between the limiting part and the fourth framework is smaller than the thickness of the PCB by 0.05 mm.

The interference framework further comprises a fifth framework arranged on the upper shell; when the shell is installed, the PCB is clamped between the fifth framework and the limiting part.

And a guide part is arranged on the third framework.

A power adapter comprises the fixing structure of the PCB.

Compared with the prior art, the utility model discloses following beneficial effect has:

when the shell is opened, the interference framework is completely designed on the mold. During production, the PCB can be directly fixed in the shell through the interference framework, and the PCB is not required to be fixed in the shell through glue dispensing or screws. The production efficiency is high, the cost is low, and the market competitiveness is improved; and the installation is convenient, thereby improving the automation degree.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a lower housing of a power adapter according to the first embodiment.

Fig. 2 is a sectional view of the power adapter according to the first embodiment.

Fig. 3 is a schematic view of the power adapter of the second embodiment without an upper case.

Fig. 4 is a sectional view of the power adapter of the second embodiment.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in embodiments of the present invention, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In one embodiment, a fixing structure of a PCB board is provided, the fixing structure including a housing and a PCB board disposed in the housing, the housing including an upper housing and a lower housing, the upper housing and the lower housing being provided with interference ribs that are engaged with each other, and the PCB board being fixed in the housing by the interference ribs when the PCB board is mounted.

The first embodiment is as follows:

as shown in fig. 1 and 2, in the present embodiment, a power adapter 10 is provided, the power adapter 10 includes a housing 1 and a PCB 2 disposed in the housing, the housing 1 includes an upper housing 11 and a lower housing 12, the upper housing 11 and the lower housing 12 are provided with interference skeletons 3, and when the PCB 2 is mounted, the PCB 2 is fixed in the housing by the interference skeletons 3.

In the present embodiment, two opposite guide grooves 13 are formed on the inner side wall of the lower housing 12, and the interference frame 3 includes a first frame 31 disposed in the two guide grooves 13; when the PCB 2 vertically moves to the bottom of the lower housing 12 along the guide groove 13, the PCB 2 is caught between the two first bobbins 31, thereby catching the PCB 2 in the length direction. When the PCB 2 vertically moves along the guide grooves 13 to the bottom of the lower case 12, the PCB 2 is caught in the guide grooves 13, thereby catching the PCB 2 in the thickness direction. The interference frame 3 includes a second frame 32 provided on the bottom surface of the lower case 12; when the PCB 2 is mounted, the PCB 2 is clamped between the second bobbin 32 and the upper case 11, thereby clamping the PCB 2 in the width direction. Through interfering the skeleton 3 to the PCB board 2 of the three direction chucking respectively of length, width, thickness, consequently more firm.

In the present embodiment, the distance between the two first skeletons 31 is smaller than the length of the PCB 2 by 0.1mm, and the two first skeletons 31 firmly clamp the PCB 2 by the interference design.

In the present embodiment, the width of the guide groove 13 adjacent to the bottom surface of the lower case 12 is smaller than the thickness of the PCB 2 by 0.1mm, and the guide groove 13 firmly clamps the PCB 2 by the interference design.

In the present embodiment, the second frame 32 has a triangular structure, and the stress generated by the structure is small, so that the PCB board 2 is not easily crushed by the upper housing 11 and the second frame 32.

Example two:

as shown in fig. 3 and 4, in the present embodiment, a power adapter 10 is provided, the power adapter 10 includes a housing 1 and a PCB 2 disposed in the housing, the housing 1 includes an upper housing 11 and a lower housing 12, the upper housing 11 and the lower housing 12 are provided with interference skeletons 3, and when the PCB 2 is mounted, the PCB 2 is fixed in the housing by the interference skeletons 3.

In this embodiment, the interference frame 3 includes a third frame 31 disposed on the periphery of the inner side wall of the lower housing 12, the third frame 31 is provided with a limiting portion 311, and when the PCB 2 moves laterally to the limiting portion 311, the PCB 2 is clamped between the limiting portions 311, so as to clamp the PCB 2 in the length direction and the width direction respectively. The interference frame 3 further comprises a fourth frame 32 arranged on the two opposite inner side walls of the lower shell 12, the fourth frame 32 is located on the limiting portion 311, and after the PCB 2 is mounted, the PCB 2 is clamped between the limiting portion 311 and the fourth frame 32, so that the PCB 2 is clamped in the thickness direction. Through interfering the skeleton 3 to the PCB board 2 of the three direction chucking respectively of length, width, thickness, consequently more firm.

In the present embodiment, the distance between the opposing position-limiting portions 311 is smaller than the length or width of the PCB 2 corresponding thereto by 0.1 mm. Specifically, when the oppositely arranged limiting parts 311 are in the length direction, the distance between the opposite limiting parts 311 is smaller than the length of the PCB 2 by 0.1 mm; when the opposite position-limiting parts 311 are in the width direction, the distance between the opposite position-limiting parts 311 is smaller than the width of the PCB 2 by 0.1 mm. By the interference design, the peripheral limiting part 311 can firmly clamp the PCB 2.

In the present embodiment, the distance between the position-limiting portion 311 and the fourth skeleton 32 is smaller than the thickness of the PCB 2 by 0.05mm, and the PCB 2 is firmly clamped by the position-limiting portion 311 and the bottom of the fourth skeleton 32 due to the interference design.

In this embodiment, the third frame 31 is provided with a guide portion 312, so that the PCB board 2 can be conveniently moved down along the guide portion 312.

In this embodiment, the fourth rib 32 located at one side of the inner sidewall of the lower case 12 has a guiding function, so that the PCB 2 can be conveniently moved downward along the fourth rib 32 at one side.

In the present embodiment, the interference skeleton 3 further includes a fifth skeleton 33 provided on the upper case 11; when the housing 1 is mounted, the PCB 2 is clamped between the fifth frame 33 and the position-limiting portion 311. The PCB 2 is further clamped in the thickness direction through the fifth framework 33, so that the PCB 2 is prevented from shaking in the using process, and the quality of a product is improved.

The above is right the utility model provides a power adapter's description, to technical personnel in the field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and application scope, to sum up, this description content should not be understood as right the utility model discloses a restriction.

Claims

1. The fixing structure of the PCB is characterized by comprising a shell and the PCB arranged in the shell, wherein the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are provided with interference frameworks which are matched with each other; when the PCB is installed, the PCB is fixed in the shell by the interference framework.

2. The fixation structure according to claim 1, wherein the lower housing inner side wall is provided with two opposite guide grooves, and the interference frame comprises a first frame disposed in the two guide grooves; when the PCB is vertically moved to the bottom surface of the lower shell along the guide groove, the PCB is respectively clamped between the two first frameworks and in the guide groove; the interference framework further comprises a second framework arranged on the bottom surface of the lower shell; when the PCB board is installed, the PCB board is clamped between the second framework and the upper shell.

3. The fixing structure according to claim 2, wherein a distance between the two first skeletons is smaller than a length of the PCB board by 0.1 mm.

4. The fixing structure according to claim 2, wherein a width of the guide groove adjacent to the bottom surface of the lower case is smaller than a thickness of the PCB board by 0.1 mm.

5. The fixing structure according to claim 1, wherein the interference frame includes a third frame disposed on the periphery of the inner side wall of the lower housing, the third frame having a position-limiting portion, and when the PCB board moves transversely to the position-limiting portion, the PCB board is clamped between the position-limiting portions; the interference framework is further arranged on the fourth framework on the two opposite inner side walls of the lower shell, the fourth framework is located on the limiting portion, and when the PCB is installed, the PCB is tightly clamped between the limiting portion and the fourth framework.

6. The fixing structure according to claim 5, wherein a distance between the opposing position-restricting portions is smaller than a length or a width of the PCB board corresponding thereto by 0.1 mm.

7. The fixing structure according to claim 5, wherein a distance between the stopper portion and the fourth skeleton is smaller than a thickness of the PCB plate by 0.05 mm.

8. The fixation structure of claim 5, wherein the interference cage further comprises a fifth cage disposed on the upper shell; when the shell is installed, the PCB is clamped between the fifth framework and the limiting part.

9. The fixing structure according to claim 5, wherein a guide portion is provided on the third skeleton.

10. A power adapter comprising the PCB board fixing structure of any one of claims 1 to 9.