CN115315167B

CN115315167B - PCB board with easy dismouting signal shielding structure

Info

Publication number: CN115315167B
Application number: CN202210772031.3A
Authority: CN
Inventors: 熊福胜; 伍林; 金海亮; 张向辉; 王四俊; 具佶勋
Original assignee: Shenzhen Lizi Photoelectric Technology Co ltd
Current assignee: Shenzhen Lizi Photoelectric Technology Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-04-07
Anticipated expiration: 2042-06-30
Also published as: CN115315167A

Abstract

The invention relates to a PCB with an easily-disassembled signal shielding structure, which comprises a PCB body, wherein the easily-disassembled signal shielding structure comprises a shielding cover, the shielding cover is used for covering and shielding a PCB area on the PCB body, a plurality of positioning pieces are also arranged on the PCB body, the positioning pieces are arranged in a right-angle shape and used for limiting the shielding cover, a transverse plate is movably arranged on the shielding cover through a plurality of groups of elastic sliding mechanisms, two telescopic plates are movably arranged on the transverse plate through a plurality of groups of elastic telescopic mechanisms and are respectively positioned on two sides of the transverse plate, the telescopic plates are matched with a deflection mechanism arranged on the PCB body, the deflection mechanism is matched with a sliding type locking mechanism arranged on the PCB body, and finally, through the mutual matching of all mechanisms and parts, the disassembling and assembling work of the shielding cover is convenient and rapid, the work efficiency is favorably improved, and the easily-disassembled and assembled signal shielding structure is suitable for popularization and use.

Description

PCB board with easy dismouting signal shielding structure

Technical Field

The invention relates to the technical field related to interference signal shielding of electronic equipment, in particular to a PCB with an easily-detachable signal shielding structure.

Background

Along with the improvement of living standard of people and the rapid development of electronic industry, related electronic products in various fields are more and more, the electronic products are gradually popularized in the life of people, the electronic products play an important role in the life of people, and great convenience is brought to the life of people.

Nowadays, many electronic products adopt a main PCB structure, wherein the main PCB mainly controls the operation of the electronic product, and interference signals generated by the operation of the electrical components mounted on the main PCB are related to and affect the electrical components of other electrical devices in three ways, namely, electromagnetic conduction, electromagnetic induction and electromagnetic radiation. In order to achieve better effect of shielding interference signals, the existing electronic products often use holes on the main PCB to add a metal shielding cover.

At present, when carrying out the installation of shield cover to the PCB board, usually with shield cover lug weld on the PCB board, because the shield cover after the welding is difficult to pull down, when needs test electronic components, have to pull down the shield cover by force, weld again after the test, seem comparatively troublesome, the dismouting operation is inconvenient goes on, causes the influence to work efficiency.

Disclosure of Invention

The present invention is directed to a PCB board having a signal shielding structure that is easy to disassemble and assemble, so as to solve the problems of the related art.

In order to achieve the purpose, the invention provides the following technical scheme:

a PCB with an easy-to-assemble and disassemble signal shielding structure comprises a PCB body, wherein the easy-to-assemble and disassemble signal shielding structure comprises a shielding case, and the shielding case is used for covering and shielding a PCB area on the PCB body;

the PCB body is also provided with a plurality of positioning pieces which are arranged in a right-angle shape and used for limiting the shielding cover, and the shielding cover is movably provided with a transverse plate through a plurality of groups of elastic sliding mechanisms, and the transverse plate is parallel to the shielding cover;

the PCB board is characterized in that two telescopic plates are arranged on the transverse plate through a plurality of groups of elastic telescopic mechanisms in a sliding mode, the two telescopic plates are respectively located on two sides of the transverse plate, the telescopic plates are matched with a deflection mechanism on the PCB board body, and the deflection mechanism is matched with a sliding type locking mechanism on the PCB board body.

As a further scheme of the invention: the two sides of the transverse plate are respectively and fixedly provided with a side plate, the side plates are connected with the elastic sliding mechanism, the elastic sliding mechanism comprises two protruding blocks fixedly arranged on the shielding cover and a transverse rod fixedly arranged between the two protruding blocks, and two groups of sliding push-pull assemblies connected with the side plates are arranged on the transverse rod.

As a still further scheme of the invention: the sliding push-pull assembly comprises a sliding block, a second cylindrical spring and a connecting rod, wherein the sliding block is arranged on the cross rod in a sliding mode, the second cylindrical spring is sleeved on the periphery of the cross rod, the connecting rod is connected with the sliding block and the side plate, two ends of the second cylindrical spring are respectively connected with the protruding block and the sliding block, and two ends of the connecting rod are respectively hinged with the sliding block and the side plate.

As a still further scheme of the invention: the telescopic plate is fixedly provided with a fixed seat, the elastic telescopic mechanism comprises a telescopic column and a guide cylinder which are fixedly installed on the fixed seat and the transverse plate respectively, the telescopic column and the guide cylinder are slidably sleeved, a first cylindrical spring is further arranged in the guide cylinder, one end of the first cylindrical spring is connected with the cylinder wall of the guide cylinder, and the other end of the first cylindrical spring is connected with one end, far away from the fixed seat, of the telescopic column.

As a still further scheme of the invention: the deflection mechanism comprises a swinging plate which is rotatably installed on the PCB body and a pulley which is rotatably installed at one end, far away from the PCB body, of the swinging plate, and the pulley is abutted to the expansion plate.

As a still further scheme of the invention: slidingtype locking mechanical system includes fixed mounting and is in riser on the PCB board body, the riser orientation the guide way has been seted up to one side of swing board, slip gomphosis has a sliding block in the guide way, the sliding block through launch the subassembly with the riser is connected, still through the drive assembly with swing board connects.

As a still further scheme of the invention: the transmission assembly comprises a sliding block, a swinging plate and a transmission component, wherein the sliding block is fixedly installed on the sliding block, the sliding block faces towards a cylinder on one side of the swinging plate, the swinging plate faces towards a bar-shaped groove on one side of the sliding block, and the cylinder extends into the bar-shaped groove and is connected with the swinging plate in a sliding mode.

As a still further scheme of the invention: still seted up two lockholes on the riser, launch the subassembly and include through two flexure strip movable mounting elastic plate and fixed mounting on the sliding block the flexure plate is kept away from the locking post of flexure strip one side, the locking post with the lockhole adaptation.

Compared with the prior art, the invention has the beneficial effects that: the PCB shield cover is novel in design, when the PCB shield cover is used, the position of the telescopic plate is adjusted through the elastic telescopic mechanism, the shield cover covers the PCB body, then the locking mechanism moves during sliding to drive the deflection mechanism to move, the deflection mechanism drives the transverse plate to gradually move towards the shield cover, in the process, the elastic sliding mechanism stores elastic potential energy, the shield cover tightly covers the PCB body and conducts signal shielding on the PCB body, and finally the sliding type locking mechanism reaches the locking position to keep the signal shielding state of the PCB body, when the shield cover needs to be taken down, the sliding type locking mechanism releases locking, so that the shield cover is convenient and rapid to disassemble and assemble through mutual matching of various mechanisms and parts, the work efficiency is improved, and the PCB shield cover is suitable for popularization and use.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a PCB having an easy-to-detach signal shielding structure.

Fig. 2 is a schematic structural view of another angle of an embodiment of a PCB having an easy-to-detach signal shielding structure.

Fig. 3 is a schematic structural diagram of a PCB having an easy-to-detach signal shielding structure according to another angle of an embodiment.

Fig. 4 is an enlarged view of a structure at a in fig. 2.

Fig. 5 is an enlarged view of the structure at B in fig. 3.

Fig. 6 is an exploded view of an elastic expansion mechanism in an embodiment of a PCB having an easily detachable signal shielding structure.

Fig. 7 is an exploded view of the sliding type locking mechanism in an embodiment of the PCB having an easily detachable signal shielding structure.

In the figure: 1. a PCB body; 2. a shield case; 3. a transverse plate; 4. a side plate; 5. a retractable plate; 6. a guide cylinder; 7. a telescopic column; 8. a fixed seat; 9. a first cylindrical spring; 10. a protruding block; 11. a cross bar; 12. a slider; 13. a second cylindrical spring; 14. a connecting rod; 15. a swing plate; 16. a pulley; 17. a strip-shaped groove; 18. a vertical plate; 19. a lock hole; 20. a guide groove; 21. a slider; 22. a cylinder; 23. an elastic sheet; 24. an elastic plate; 25. a locking post; 26. a positioning member.

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.

In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Referring to fig. 1-7, in an embodiment of the present invention, a PCB having an easy-to-mount/dismount signal shielding structure includes a PCB body 1, the easy-to-mount/dismount signal shielding structure includes a shielding cover 2, the shielding cover 2 is used for covering and shielding a PCB area on the PCB body 1, and stainless steel with a thickness of 0.2mm and copper foil are used as materials, wherein the copper foil is a metal shielding material that is easy to be tinned.

It should be added that the PCB body 1 is a square structure and has a threaded hole at each of its four corners, so that an assembler can assemble the PCB body into an electronic device with screws during actual assembly.

Still be provided with a plurality of setting elements 26 on the PCB board body 1, setting element 26 is right angle form setting, is used for right shield cover 2 carries on spacingly, just shield cover 2 is last to be provided with a diaphragm 3 through the activity of multiunit elastic sliding mechanism, diaphragm 3 with shield cover 2 parallels.

Specifically speaking, a plurality of the positioning pieces 26 are located around the PCB area on the PCB board body 1, and when the shielding case 2 is installed, in order to ensure the accuracy of shielding the PCB area on the PCB board body 1 by the shielding case 2, the positioning pieces 26 need to be aligned with the shielding case 2, so that the signal shielding effect is better.

Referring to fig. 4 again, two side plates 4 are fixedly mounted on two sides of the transverse plate 3, the side plates 4 are connected to the elastic sliding mechanism, the elastic sliding mechanism includes two protruding blocks 10 fixedly mounted on the shielding case 2 and a cross bar 11 fixedly mounted between the two protruding blocks 10, and two sets of sliding push-pull assemblies connected to the side plates 4 are disposed on the cross bar 11.

The sliding push-pull assembly comprises a sliding block 12 arranged on the cross rod 11 in a sliding mode, a second cylindrical spring 13 sleeved on the periphery of the cross rod 11 and a connecting rod 14 connected with the sliding block 12 and the side plate 4, two ends of the second cylindrical spring 13 are connected with the protruding block 10 and the sliding block 12 respectively, and two ends of the connecting rod 14 are hinged with the sliding block 12 and the side plate 4 respectively. The diaphragm 3 is provided with two expansion plates 5 through the sliding of a plurality of groups of elastic expansion mechanisms, the expansion plates 5 are respectively positioned on two sides of the diaphragm 3, the expansion plates 5 are matched with a deflection mechanism on the PCB body 1, and the deflection mechanism is matched with a sliding type locking mechanism on the PCB body 1.

When the PCB shield is used, the position of the telescopic plate 5 is adjusted through the elastic telescopic mechanism, the shield cover 2 is covered on the PCB body 1, then, the locking mechanism moves during sliding, the deflection mechanism is driven to move, and the deflection mechanism drives the transverse plate 3 to move towards the shield cover gradually, in the process, the side plate 4 pushes the sliding block 12 to slide towards the protruding block 10 on the transverse rod 11 through the connecting rod 14, the second cylindrical spring 13 is compressed, and then, after the sliding type locking mechanism is locked, the second cylindrical spring 13 stores certain elastic potential energy, so that the shield cover 2 tightly covers the PCB body 1, and the signal shielding effect of the shield cover 2 on the PCB body 1 is greatly improved.

Referring to fig. 6 again, a fixing seat 8 is fixedly arranged on the expansion plate 5, the elastic expansion mechanism comprises an expansion column 7 and a guide cylinder 6 which are fixedly arranged on the fixing seat 8 and the transverse plate 3 respectively, and the expansion column 7 and the guide cylinder 6 are slidably sleeved. The guide cylinder 6 is also provided with a first cylindrical spring 9, one end of the first cylindrical spring 9 is connected with the cylinder wall of the guide cylinder 6, and the other end of the first cylindrical spring 9 is connected with one end, far away from the fixed seat 8, of the telescopic column 7.

Referring to fig. 5 and 7 again, the deflecting mechanism includes a swinging plate 15 rotatably mounted on the PCB body 1 and a pulley 16 rotatably mounted on an end of the swinging plate 15 away from the PCB body 1, and the pulley 16 abuts against the expansion plate 5.

When carrying out the adjustment of expansion plate 5 position, the fixing base 8 that will be located respectively on two expansion plates 5 holds between the fingers, make expansion plate 5 slide in towards diaphragm 3, correspondingly, flexible post 7 slides in gradually towards guide cylinder 6, first cylindrical spring 9 is compressed, treat

expansion plate

5 and 16 dislocation backs of pulley, with 2 covers of shield cover to PCB district on the PCB edition of books body 1, loosen two fixing bases 8 again, first cylindrical spring 9 releases elastic potential energy bounce, make expansion plate 5 towards the direction of keeping away from diaphragm 3 again and slide, and then, pulley 16 just is located expansion plate 5, and with expansion plate 5 butt.

The sliding type locking mechanism comprises a vertical plate 18 fixedly mounted on the PCB body 1, a guide groove 20 is formed in one side, facing the swinging plate 15, of the vertical plate 18, a sliding block 21 is embedded in the guide groove 20 in a sliding mode, the sliding block 21 is connected with the vertical plate 18 through an ejection assembly, and is further connected with the swinging plate 15 through a transmission assembly. The transmission assembly comprises a sliding block 21, a cylinder 22 and a strip-shaped groove 17, wherein the sliding block 21 faces towards one side of the swinging plate 15, the strip-shaped groove 17 is arranged at one side of the sliding block 21, and the cylinder 22 extends into the strip-shaped groove 17 and is in sliding connection with the swinging plate 15.

Still seted up two lockholes 19 on the riser 18, the subassembly of launching includes through two flexure strip 23 movable mounting the elastic plate 24 on the sliding block 21 and fixed mounting be in the elastic plate 24 keeps away from the locking post 25 of flexure strip 23 one side, locking post 25 with lockhole 19 adaptation.

Further, the elastic piece 23 is a common elastic component, one side of the elastic piece is fixedly connected with the sliding block 21, and the other side of the elastic piece is fixedly connected with the elastic plate 24.

After the shielding case 2 covers the PCB area of the PCB body 1, the locking post 25 is pushed out from the currently located locking hole 19, the elastic piece 23 deforms, and then the sliding block 21 is pushed towards another locking hole 19, in this process, the column 22 moves along with the sliding block 21 and is in sliding fit with the swinging plate 15 through the strip-shaped groove 17, so that the swinging plate 15 rotates, in the rotating process of the swinging plate 15, the pulley 16 rolls on the expansion plate 5, so that the expansion plate 5 drives the transverse plate 3 and the side plate 4 to move towards the shielding case 2, the elastic sliding mechanism stores elastic potential energy until the locking post 25 moves to another locking hole 19, the elastic piece 23 rebounds, the locking post 25 is inserted into the locking hole 19 corresponding to the position at this time, and the signal shielding state of the PCB body 1 by the shielding case 2 is stably maintained.

The working principle of the invention is as follows: when the device is used, firstly, the positions of the expansion plates 5 are adjusted through the elastic expansion mechanism, the fixed seats 8 respectively positioned on the two expansion plates 5 are pinched, so that the expansion plates 5 slide towards the transverse plate 3, correspondingly, the expansion columns 7 gradually slide towards the guide cylinder 6, the first cylindrical spring 9 is compressed, after the expansion plates 5 are dislocated with the pulleys 16, the shielding cover 2 is covered on a PCB area on the PCB body 1, then the two fixed seats 8 are loosened, the first cylindrical spring 9 releases elastic potential energy to rebound, so that the expansion plates 5 slide towards the direction far away from the transverse plate 3, and then the pulleys 16 are positioned on the expansion plates 5 and abut against the expansion plates 5;

then, the locking column 25 is pushed out from the current locking hole 19, the elastic piece 23 deforms, and then the sliding block 21 is pushed towards the other locking hole 19, in this process, the column 22 moves along with the sliding block 21 and is in sliding fit with the swinging plate 15 through the strip-shaped groove 17, so that the swinging plate 15 rotates, and in the rotating process of the swinging plate 15, the pulley 16 rolls on the telescopic plate 5, so that the telescopic plate 5 drives the transverse plate 3 and the side plate 4 to move towards the shielding case 2;

in the process that the transverse plate 3 and the side plate 4 are driven by the expansion plate 5 to move towards the shielding case 2, the side plate 4 pushes the sliding block 12 to slide towards the protruding block 10 on the transverse rod 11 through the connecting rod 14, and the second cylindrical spring 13 is compressed, so that the second cylindrical spring 13 stores certain elastic potential energy, the shielding case 2 tightly covers the PCB body 1, and the signal shielding effect of the shielding case 2 on the PCB body 1 is greatly improved;

after the locking column 25 moves to another locking hole 19, the elastic piece 23 rebounds, and the locking column 25 is inserted into the locking hole 19 corresponding to the locking column in position at the moment, so that the shielding case 2 stably maintains the signal shielding state of the PCB body 1, and then the shielding case 2 is convenient and quick to disassemble and assemble, the work efficiency is improved, and the locking device is suitable for popularization and use.

It will be evident to those skilled in the art that the invention 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 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 PCB with the signal shielding structure easy to disassemble and assemble is characterized by comprising a PCB body (1), wherein the signal shielding structure easy to disassemble and assemble comprises a shielding case (2), and the shielding case (2) is used for covering and shielding a PCB area on the PCB body (1);

the PCB board comprises a PCB board body (1), and is characterized in that a plurality of positioning pieces (26) are further arranged on the PCB board body (1), the positioning pieces (26) are arranged in a right-angle shape and used for limiting the shielding case (2), a transverse plate (3) is movably arranged on the shielding case (2) through a plurality of groups of elastic sliding mechanisms, and the transverse plate (3) is parallel to the shielding case (2);

the transverse plate (3) is provided with two telescopic plates (5) in a sliding manner through a plurality of groups of elastic telescopic mechanisms, the two telescopic plates (5) are respectively positioned at two sides of the transverse plate (3), the telescopic plates (5) are matched with a deflection mechanism arranged on the PCB body (1), and the deflection mechanism is matched with a sliding type locking mechanism arranged on the PCB body (1);

two sides of the transverse plate (3) are respectively and fixedly provided with a side plate (4), the side plates (4) are connected with the elastic sliding mechanism, the elastic sliding mechanism comprises two protruding blocks (10) fixedly arranged on the shielding cover (2) and a transverse rod (11) fixedly arranged between the two protruding blocks (10), and two groups of sliding push-pull assemblies connected with the side plates (4) are arranged on the transverse rod (11);

the sliding push-pull assembly comprises a sliding block (12) arranged on the cross rod (11) in a sliding mode, a second cylindrical spring (13) sleeved on the periphery of the cross rod (11) and a connecting rod (14) connecting the sliding block (12) with the side plate (4), two ends of the second cylindrical spring (13) are connected with the protruding block (10) and the sliding block (12) respectively, and two ends of the connecting rod (14) are hinged with the sliding block (12) and the side plate (4) respectively.

2. The PCB with the signal shielding structure easy to disassemble and assemble as claimed in claim 1, wherein a fixed seat (8) is fixedly arranged on the retractable plate (5), the elastic retractable mechanism comprises a retractable column (7) and a guide cylinder (6) which are respectively fixedly arranged on the fixed seat (8) and the transverse plate (3), and the retractable column (7) and the guide cylinder (6) are slidably sleeved;

the guide cylinder (6) is also internally provided with a first cylindrical spring (9), one end of the first cylindrical spring (9) is connected with the cylinder wall of the guide cylinder (6), and the other end of the first cylindrical spring is connected with one end, far away from the fixed seat (8), of the telescopic column (7).

3. The PCB with the signal shielding structure easy to disassemble and assemble as claimed in claim 1, wherein the deflection mechanism comprises a swing plate (15) rotatably mounted on the PCB body (1) and a pulley (16) rotatably mounted at one end of the swing plate (15) far away from the PCB body (1), and the pulley (16) abuts against the expansion plate (5).

4. The PCB with the signal shielding structure easy to disassemble and assemble as claimed in claim 3, wherein the sliding type locking mechanism comprises a vertical plate (18) fixedly mounted on the PCB body (1), a guide groove (20) is formed in one side of the vertical plate (18) facing the swinging plate (15), a sliding block (21) is slidably embedded in the guide groove (20), and the sliding block (21) is connected with the vertical plate (18) through an ejection assembly and is further connected with the swinging plate (15) through a transmission assembly.

5. The PCB with the signal shielding structure easy to disassemble and assemble is characterized in that the transmission component comprises a column (22) fixedly installed on one side of the sliding block (21) facing the swinging plate (15) and a strip-shaped groove (17) formed in one side of the swinging plate (15) facing the sliding block (21), and the column (22) extends into the strip-shaped groove (17) and is in sliding connection with the swinging plate (15).

6. The PCB with the easy-to-disassemble and assemble signal shielding structure as claimed in claim 5, wherein the riser (18) is further opened with two locking holes (19), the ejection assembly comprises an elastic plate (24) movably mounted on the sliding block (21) through two elastic pieces (23) and a locking post (25) fixedly mounted on one side of the elastic plate (24) far away from the elastic pieces (23), and the locking post (25) is matched with the locking hole (19).