CN211792248U

CN211792248U - Composite PCB (printed circuit board)

Info

Publication number: CN211792248U
Application number: CN202020872508.1U
Authority: CN
Inventors: 禹永康
Original assignee: SHENZHEN HOPESEARCH PCB MANUFACTURING CO LTD
Current assignee: SHENZHEN HOPESEARCH PCB MANUFACTURING CO LTD
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-10-27
Anticipated expiration: 2030-05-22

Abstract

The utility model relates to a PCB circuit board, in particular to a composite PCB circuit board, which comprises a first circuit board and a second circuit board, wherein the second circuit board is positioned on the top surface of the first circuit board and is connected with the first circuit board through pins, and a plurality of electronic components are fixed on the top surface of the first circuit board; the top surface of the first circuit board is provided with fixing holes at positions close to four corners, fixing columns are tightly welded at positions corresponding to the fixing holes on the bottom surface of the first circuit board, the bottom ends of the fixing columns are sleeved with shockproof sleeves, supporting rings are fixed on the outer walls of the fixing columns, and springs are tightly bonded between the supporting rings and the bottom walls of the shockproof sleeves; a dust screen is fixed right above the first circuit board. The utility model discloses a dust screen and shockproof cover have solved miniaturized PCB circuit board at the in-process that uses, receive the produced possibility of damaging of the influence of vibrations or dust also great problem.

Description

Composite PCB (printed circuit board)

Technical Field

The utility model relates to a PCB circuit board, especially a compound PCB circuit board.

Background

The PCB circuit board, also called as printed circuit board, is an important electronic component, is a support body of electronic components, also is a carrier for electrical connection of electronic components, with the development of decades, the application of PCB circuit board also relates to the aspect of aspects, because of the fine industrial level, the PCB circuit board corresponding to some electronic products is also more small and exquisite, but the possibility of damage caused by the influence of vibration or dust is also higher in the using process of such PCB circuit board. In view of this, we propose a composite PCB circuit board.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to through providing a compound PCB circuit board to solve the defect that proposes in the above-mentioned background art.

The utility model adopts the technical scheme as follows: the circuit board comprises a first circuit board and a second circuit board, wherein the second circuit board is positioned on the top surface of the first circuit board and is connected with the first circuit board through pins, and a plurality of electronic components are fixed on the top surface of the first circuit board; fixing holes are formed in the positions, close to the four corners, of the top surface of the first circuit board, fixing columns are welded tightly on the positions, corresponding to the fixing holes, of the bottom surface of the first circuit board, shockproof sleeves are sleeved at the bottom ends of the fixing columns, supporting rings are fixed on the outer walls of the fixing columns, and springs are tightly bonded between the supporting rings and the bottom walls of the shockproof sleeves; and a dust screen is fixed right above the first circuit board.

As an optimal technical solution of the utility model: the top surface of first circuit board is close to the four corners position of fixed orifices all closely bonds and has the support column, the dust screen is located the top surface of support column, the top surface of dust screen with the corresponding position of support column closely bonds and has the connecting block, the connecting block with through cross screw zonulae occludens between the support column.

As an optimal technical solution of the utility model: the shockproof sleeve is a hollow cylinder with the top end communicated with the outside, a through hole is formed in the bottom wall of the shockproof sleeve, a threaded hole with the upper end communicated with the lower end is formed in the fixed column, and the circle centers of the threaded hole, the through hole and the fixed hole are located on the same axis.

As an optimal technical solution of the utility model: the bottom wall of the fixed column is fixed with at least two limiting columns which are distributed in an annular equal interval manner, and the lower ends of the limiting columns penetrate through the shockproof sleeve and are connected with the shockproof sleeve in a sliding manner.

As an optimal technical solution of the utility model: one half part of the spring is positioned in the shockproof sleeve, and the outer diameter of the fixed column is smaller than the diameter of the spring.

As an optimal technical solution of the utility model: the height of the supporting column is larger than the lengths of the electronic component and the second circuit board, and the supporting column and the first circuit board are of an integrated structure.

The utility model discloses a dust screen of fixed connection on first circuit board, can effectively completely cut off the dust that sees through outside electronic product and fall first circuit board, prevented the dust and piled up and cause the short circuit on the PCB circuit board, simultaneously through fixed column and shockproof cover, utilize the spring to carry out the shock attenuation, when first circuit board receives exogenic action and produces violent vibrations, can effectively alleviate the influence of vibrations to whole PCB circuit board, the in-process of having solved miniaturized PCB circuit board using, receive the influence of vibrations or dust and produce the also great problem of possibility of damage.

Drawings

Fig. 1 is a schematic overall structure diagram of the preferred embodiment of the present invention;

fig. 2 is a cross-sectional view of a preferred embodiment of the invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

The reference numbers illustrate:

the circuit board comprises a first circuit board 1, a fixing hole 11, an electronic component 12, a second circuit board 2, a fixing column 3, a shockproof sleeve 31, a through hole 311, a spring 32, a support ring 33, a threaded hole 34, a limiting column 35, a dust screen 4, a support column 41, a connecting block 42 and a cross screw 43.

Detailed Description

It should be noted that, in the present application, features of embodiments and embodiments can be combined with each other without conflict, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, a preferred embodiment of the present invention provides a composite PCB, including a first circuit board 1 and a second circuit board 2, wherein the second circuit board 2 is located on the top surface of the first circuit board 1 and connected to the first circuit board 1 through pins, and a plurality of electronic components 12 are further fixed on the top surface of the first circuit board 1; fixing holes 11 are formed in the positions, close to the four corners, of the top surface of the first circuit board 1, fixing columns 3 are tightly welded to the positions, corresponding to the fixing holes 11, of the bottom surface of the first circuit board 1, shockproof sleeves 31 are sleeved at the bottom ends of the fixing columns 3, supporting rings 33 are fixed on the outer walls of the fixing columns 3, and springs 32 are tightly bonded between the supporting rings 33 and the bottom walls of the shockproof sleeves 31; a dust screen 4 is fixed right above the first circuit board 1.

In this embodiment, the four corners position that the top surface of first circuit board 1 is close to fixed orifices 11 all closely bonds and has support column 41, dust screen 4 is located the top surface of support column 41, the top surface of dust screen 4 closely bonds with the position that support column 41 corresponds has connecting block 42, through cross screw 43 zonulae occludens between connecting block 42 and the support column 41, it can be stable be fixed in directly over first circuit board 1 to have ensured dust screen 4, in the long-term use process, can continue the influence of the isolated dust of first circuit board 1, the protection is still provided, prevent to receive the influence of external force.

Furthermore, the height of the supporting column 41 is greater than the lengths of the electronic component 12 and the second circuit board 2, and the supporting column 41 and the first circuit board 1 are of an integrated structure, so that the connection stability is ensured, meanwhile, the dustproof net 4 is effectively prevented from contacting the electronic component 12 and the second circuit board 2, and the normal operation of the PCB is not influenced.

Besides, the shockproof sleeve 31 is a hollow cylinder with the top end communicated with the outside, the bottom wall of the shockproof sleeve 31 is provided with a through hole 311, the fixed column 3 is provided with a threaded hole 34 with the upper end and the lower end communicated with each other, the circle centers of the threaded hole 34, the through hole 311 and the fixed hole 11 are located on the same axis, the first circuit board 1 is connected into an external electronic product through a bolt, in the connection process, the threaded hole 34 reinforces the connection, and meanwhile, the spring 32 can be effectively compressed through the pressure of the bolt in the connection process.

Specifically, one half of the spring 32 is located in the anti-vibration sleeve 31, the outer diameter of the fixed column 3 is smaller than the diameter of the spring 32, when the first circuit board 1 vibrates due to external collision and other factors, the spring 32 can be further compressed, the first circuit board 1 is effectively subjected to shock absorption and protection, meanwhile, the distance between the bottom surface of the fixed column 3 and the inner wall of the bottom end of the anti-vibration sleeve 31 is smaller than the length of one half of the spring 32, and the lower end of the fixed column 3 can be located in the anti-vibration sleeve 31 constantly.

Furthermore, at least two limiting columns 35 which are distributed annularly and equidistantly are fixed on the bottom wall of the fixed column 3, the lower ends of the limiting columns 35 penetrate through the anti-vibration sleeve 31 and are in sliding connection with the anti-vibration sleeve 31, the fixed column 3 and the anti-vibration sleeve 31 are limited, the anti-vibration sleeve 31 is prevented from rotating in the process that the bolt is rotated to connect the first circuit board 1 with the electronic product, and the stability of the relative position of the anti-vibration sleeve 31 is ensured.

It should be noted that, the utility model provides a first circuit board 1, electronic components 12 and second circuit board 2 are prior art, and the connection between the three also is prior art, the utility model discloses do not relate to the improvement to the function of three itself, no longer describe herein.

The utility model discloses a compound PCB circuit board is when using, at first utilize spring 32 to closely fix between shockproof cover 31 and the fixed column 3, the lower extreme of fixed column 3 is located shockproof cover 31, utilize the bolt to loop through fixed orifices 11 afterwards, screw hole 34 and through-hole 311 with first circuit board 1 is fixed in the inside of electronic product, in this process, shockproof cover 31 contacts with the connecting point on the electronic product of outside, receive the pressure when the bolt is screwed, spring 32 is slightly compressed, make the connection inseparabler, simultaneously time limit post 35 slides in shockproof cover 31, limit shockproof cover 31, utilize cross screw 43 inseparabler to connect on support column 41 with dust screen 4 afterwards, when receiving factors such as outside collision to lead to first circuit board 1 to take place vibrations, spring 32 can be further compressed, carry out shock attenuation protection to first circuit board 1 effectively, the dustproof net 4 can continuously prevent dust of the first circuit board 1 and prevent the first circuit board from being damaged by the electronic component 12 caused by external collision, and the problem that the miniaturized PCB circuit board is damaged by vibration or dust in the using process is solved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a compound PCB circuit board, includes first circuit board (1) and second circuit board (2), its characterized in that: the second circuit board (2) is positioned on the top surface of the first circuit board (1) and connected with the first circuit board (1) through pins, and a plurality of electronic components (12) are further fixed on the top surface of the first circuit board (1); fixing holes (11) are formed in the positions, close to the four corners, of the top surface of the first circuit board (1), fixing columns (3) are tightly welded to the positions, corresponding to the fixing holes (11), of the bottom surface of the first circuit board (1), shockproof sleeves (31) are sleeved at the bottom ends of the fixing columns (3), supporting rings (33) are fixed on the outer walls of the fixing columns (3), and springs (32) are tightly bonded between the supporting rings (33) and the bottom walls of the shockproof sleeves (31); and a dust screen (4) is fixed right above the first circuit board (1).

2. A composite PCB panel as in claim 1, wherein: the top surface of first circuit board (1) is close to the four corners position of fixed orifices (11) all closely bonds and has support column (41), dust screen (4) are located the top surface of support column (41), the top surface of dust screen (4) with the corresponding position of support column (41) closely bonds and has connecting block (42), connecting block (42) with through cross screw (43) zonulae occludens between support column (41).

3. A composite PCB panel as in claim 1, wherein: the shockproof sleeve (31) is a hollow cylinder with the top end communicated with the outside, a through hole (311) is formed in the bottom wall of the shockproof sleeve (31), a threaded hole (34) with the upper end and the lower end communicated with each other is formed in the fixed column (3), and the circle centers of the threaded hole (34), the through hole (311) and the fixed hole (11) are located on the same axis.

4. A composite PCB panel as in claim 1, wherein: the bottom wall of the fixed column (3) is fixed with at least two limiting columns (35) which are distributed in an annular shape at equal intervals, and the lower ends of the limiting columns (35) penetrate through the shockproof sleeve (31) and are connected with the shockproof sleeve (31) in a sliding mode.

5. A composite PCB panel as in claim 1, wherein: one half part of the spring (32) is positioned in the shockproof sleeve (31), and the outer diameter of the fixed column (3) is smaller than the diameter of the spring (32).

6. A composite PCB board according to claim 2, wherein: the height of the supporting column (41) is larger than the lengths of the electronic component (12) and the second circuit board (2), and the supporting column (41) and the first circuit board (1) are of an integrated structure.