CN215453401U

CN215453401U - PCB with stress release function

Info

Publication number: CN215453401U
Application number: CN202121857556.4U
Authority: CN
Inventors: 郭小辉; 刘晨阳; 吴俊杰; 戴呈星; 宣文瀚; 吉年进; 段章领; 屈磊; 许耀华
Original assignee: Anhui University
Current assignee: Anhui University
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-07
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a PCB with a stress release function, which comprises a board body, wherein at least N open grooves are formed in the board body, the N open grooves are sequentially nested from the edge of the board body to the center of the board body, the opening directions of the adjacent open grooves are opposite, and the PCB between the two ends of the opening of the adjacent open grooves forms a cantilever beam structure. The utility model has the advantages that the stress of the plate body can be released by forming the cantilever beam structure by the plate body between the two ends of the opening of the adjacent open slot, the stress in the center of the plate body is released to the edge of the plate body, and the deformation of the plate body is prevented.

Description

PCB with stress release function

Technical Field

The utility model relates to the technical field of PCB (printed circuit board), in particular to a PCB with a stress release function.

Background

The PCB is one of important components in the electronic industry, and in electronic devices, it is a mechanical support for fixing and assembling various electronic components such as integrated circuits, etc., so as to implement wiring, electrical connection and electrical insulation between various electronic components such as integrated circuits, etc., and provide required electrical characteristics, as well as provide a solder resist pattern for automatic soldering, and provide functions of recognizing characters and patterns for component insertion, inspection and maintenance. The existing PCB structure can generate stress under the action of environmental temperature change or external force, and the stress can even become a decisive factor for device destruction sometimes.

Chinese utility model patent publication No. CN212034444U discloses a high-strength double-layer PCB, which comprises a main board, a test edge strip and a reinforcing frame, wherein the test edge strip is connected with the main board, and the reinforcing frame is mounted on the main board; the reinforcing frame comprises two opposite long steel sheet strips and a plurality of short steel sheet strips, the two ends of each long steel sheet strip are connected with the two short steel sheet strips respectively, each long steel sheet strip is provided with a connecting sheet, each connecting sheet is provided with a jack, a positioning piece is inserted into each jack to fix the corresponding connecting sheet, the main board is provided with a connecting hole and a yielding groove, the connecting hole is matched with the connecting sheet, the connecting hole is communicated with the yielding groove, and the positioning piece is inserted into the yielding groove. The strength of the PCB is increased, the device is prevented from falling off after the PCB deforms, the service life of the PCB is guaranteed, and the PCB is easy to have structural fatigue and generate plastic deformation under the condition of long-term use.

Chinese utility model patent publication No. CN211184421U discloses a printed circuit board and a semiconductor device, and this printed circuit board four corners outside all is provided with L type groove, can cut off the continuity of PCB deformation distortion in-process stress behind the L type groove to reduce the stress that the printed circuit board receives. However, although the surrounding L-shaped grooves can reduce the influence of external force on the printed circuit board, the printed circuit board cannot release the generated thermal stress at high temperature, and is deformed.

In summary, there have been many studies on preventing PCB deformation, but there still exist many disadvantages, and the key problems are mainly that the influence of stress on the PCB is neglected and the generated stress cannot be released efficiently, so that the PCB deforms.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is how to release the stress of the PCB to prevent the deformation of the PCB.

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

the utility model provides a PCB board with stress release function, package rubbing board body, be equipped with a N open slot on the plate body at least, a N open slot is set up by plate body edge to plate body center nestification in proper order, and the opening direction of the open slot between adjacent sets up relatively, and the PCB board between the open slot opening both ends between adjacent forms the cantilever beam structure.

The plate body between the two ends of the opening groove between the adjacent openings forms a cantilever beam structure, so that the stress of the plate body can be released, the stress at the center of the plate body is released to the edge of the plate body, and the deformation of the plate body is prevented.

Preferably, N is not less than 2.

Preferably, the open slot is C-shaped.

Preferably, the open slot is U-shaped.

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

Drawings

Fig. 1 is a schematic structural diagram of a PCB having a stress relief function according to an embodiment of the present invention.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless explicitly stated or limited otherwise, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, the present embodiment discloses a PCB with a stress release function, which includes a plate body 1, at least, N open slots 11 are provided on the plate body 1, the N open slots 11 are sequentially nested from the edge of the plate body 1 to the center of the plate body 2, the opening directions of the adjacent open slots 11 are opposite, and the PCB 1 between the two open ends of the adjacent open slots 11 forms a cantilever beam structure 12.

Through the plate body 1 between 11 opening both ends of open slot between adjacent forms cantilever beam structure 12, can realize the release to plate body 1 stress, release the stress at plate body 1 center to plate body 1 edge, prevent that plate body 1 deformation from taking place.

Further, N is not less than 2, in this embodiment, N is 2, and two open slots 11 are provided on the plate body 1.

Still further, the open slot 11 is C-shaped or U-shaped.

The working principle of the embodiment is as follows: set up the open slot 11 of two C shapes or U shape on plate body 1, the opening direction of two open slots 11 sets up relatively, and one of them open slot 11 nestification is in another open slot 11, and then makes PCB board 1 between the open slot 11 opening both ends between the adjacent form cantilever beam structure 12 and release the stress, releases the stress at plate body 1 center to plate body 1 edge to make plate body 1 central range not take place bending deformation, improve plate body 1's reliability.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The above-mentioned embodiments only represent the embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the concept of the present invention, and these embodiments are all within the protection scope of the present invention.

Claims

1. The utility model provides a PCB board with stress release function which characterized in that: the novel plate comprises a plate body, be equipped with a N open slot on the plate body at least, a N open slot is by plate body edge to plate body center nested setting in proper order, and the opening direction of the open slot between adjacent sets up relatively, and the PCB plate between the open slot opening both ends between adjacent forms the cantilever beam structure.

2. The PCB board with the stress relieving function as claimed in claim 1, wherein: the N is not less than 2.

3. The PCB board with the stress relieving function as claimed in claim 1, wherein: the open slot is C-shaped.

4. The PCB board with the stress relieving function as claimed in claim 1, wherein: the open slot is U-shaped.