CN211047368U

CN211047368U - Multilayer printed circuit board

Info

Publication number: CN211047368U
Application number: CN201921722282.0U
Authority: CN
Inventors: 王建业
Original assignee: Shenzhen Honglian Circuit Co ltd
Current assignee: Shenzhen Honglian Circuit Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-07-17
Anticipated expiration: 2029-10-15

Abstract

The utility model belongs to the technical field of printed circuit boards, in particular to a multilayer printed circuit board which is fixed by glue aiming at the prior printed circuit board, therefore, the proposal is provided that the proposal comprises a circuit board, the bottom of the circuit board is provided with a substrate, the top of the circuit board is provided with two pressing blocks, the bottom of the pressing block is fixedly connected with a fixed shaft which penetrates through the circuit board, the base plate is provided with two fixed holes, the bottom of the fixed shaft extends into the fixed hole, the utility model has simple structure, when the circuit board is fixed on the base plate, the circuit board fixing structure has the advantages that the simple structure easy to operate is used, so that the circuit board can be fixed, compared with the traditional structure of fixing by using glue, the circuit board fixing structure is greatly convenient for maintenance personnel to detach and maintain under the condition that the circuit board is not damaged.

Description

Multilayer printed circuit board

Technical Field

The utility model relates to a printed wiring board technical field especially relates to a multilayer printed wiring board.

Background

Printed wiring boards are important electronic components, support members for electronic components, and carriers for electrical connection of electronic components. It is called a printed circuit board because it is made by electronic printing.

Printed circuit board repair is an emerging repair industry. Industrial equipment is more and more automated, so the number of printed circuit boards in each industry is more and more, and after an industrial control board is damaged, the high cost (few, thousands yuan, and tens of thousands or tens of thousands yuan) required for replacing the circuit board also becomes a very headache for each enterprise. In fact, most of these damaged circuit boards are repairable domestically, and the cost is only 20% -30% of the cost of purchasing a new board,

however, since the conventional printed circuit board is fixed by glue, it is very inconvenient to detach and repair the printed circuit board, and a multilayer printed circuit board has been proposed to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the prior art has a printed circuit board, which is fixed by glue and has the inconvenient disassembly and maintenance, and providing a multilayer printed circuit board.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multilayer printed circuit board comprises a circuit board, wherein a substrate is arranged at the bottom of the circuit board, two pressing blocks are arranged at the top of the circuit board, a fixed shaft is fixedly connected to the bottom of each pressing block and penetrates through the circuit board, two fixed holes are formed in the substrate, the bottom of the fixed shaft extends into the fixed holes, the inner walls of the two sides in the fixed holes are fixedly provided with the same limiting plate, one side of each limiting plate is connected with two rotating shafts in a crossed manner, clamping blocks are fixedly connected to the sides, close to each other, of the rotating shafts, clamping grooves are formed in the two sides of the fixed shaft, the sides, close to each other, of the two clamping blocks are respectively clamped with the two clamping grooves, the two rotating shafts are slidably connected with the same pushing plate, a pushing assembly is fixedly connected to the bottom of the pushing plate, be provided with elastic component on the pressure movable block, and the top of elastic component and circuit board is laminated mutually, the utility model discloses simple structure when fixing the circuit board on the base plate, has used simple easy operation's structure, alright with fix the circuit board, it is fixed with glue to compare traditional use, has made things convenient for maintenance personal to pull down the maintenance with it under the condition of not damaging the circuit board greatly.

Preferably, the promotion subassembly includes the fixed plate of fixed mounting in the fixed orifices, sliding connection has the promotion axle on the fixed plate, promote the top of axle and the bottom fixed connection of slurcam, the outside cover that promotes the axle is equipped with compression spring, and the bottom fixed connection of compression spring's top and fixed plate, compression spring's bottom and the outside fixed connection that promotes the axle utilize the promotion subassembly to promote two axis of rotation and rotate, start to promote to move on the axis this moment, and can promote the slurcam and upwards remove when promoting axle compression spring, and then can make two axis of rotation alternately rotate.

Preferably, elastic component is including seting up two elastic tanks in pressing the piece bottom, fixed mounting has reset spring on the top inner wall in elastic tank, reset spring's bottom fixedly connected with and elastic tank sliding connection's elastic block, the bottom of elastic block and the top of circuit board are laminated mutually, when pressing the piece and making the fixed axle remove the fixed orifices in, utilize fixture block and draw-in groove looks clamping, alright fix with the fixed axle, loosen simultaneously and press the piece, can promote to press under reset spring's effect and move up the piece, and press the piece then can stimulate the fixed axle and shift up, can make the fixture block inseparabler of fixture block and draw-in groove laminating this moment, improved the fastening nature that base plate and circuit board are connected.

Preferably, the both sides of slurcam are equal fixed mounting have oblique slider, equal fixed mounting has oblique slide rail in two axis of rotation, and two oblique sliders respectively with two oblique slide rail sliding connection, utilize oblique slider and oblique slide rail can reduce slurcam longitudinal movement's frictional force.

Preferably, one side fixed mounting of limiting plate has the rotation axis, and the rotation axis runs through two axis of rotation and rotates with the axis of rotation and be connected, utilizes the rotation axis can realize that the axis of rotation rotates.

Preferably, a bearing is fixedly mounted on the fixing plate, the pushing shaft penetrates through an inner ring of the bearing and is in sliding connection with the inner ring of the bearing, and the sliding friction force of the pushing shaft can be reduced by using the bearing.

In the utility model, when the circuit board is required to be fixed on the substrate, the circuit board is placed on the top mounting position of the substrate, then the pushing shaft is pressed to enable the two rotating shafts to rotate in a crossed manner, at the moment, the two fixed shafts penetrate through the circuit board and respectively extend into the two fixed holes, the pressing block is pressed, finally the pushing shaft is loosened, and under the reset elasticity of the extension spring and the compression spring, the clamping block is clamped into the clamping groove, so that the fixing of the fixed shafts is realized;

the utility model discloses in, when loosening the pressure movable block, can stimulate the fixed axle and shift up under reset spring's effect, can make more inseparabler of fixture block and draw-in groove laminating this moment, improved the fastening nature that base plate and circuit board are connected.

The utility model discloses simple structure when fixing the circuit board on the base plate, has used simple structure of easily operating, alright in order to fix the circuit board, traditional use glue of comparing is fixed, has made things convenient for maintenance personal to pull down the maintenance with it under the condition that does not damage the circuit board greatly.

Drawings

Fig. 1 is a schematic top view of a multilayer printed circuit board according to the present invention;

fig. 2 is a schematic side view of a multilayer printed circuit board according to the present invention;

fig. 3 is an enlarged schematic structural diagram of a portion a of fig. 2 of a multilayer printed circuit board according to the present invention.

In the figure: the device comprises a base plate 1, a circuit board 2, a pressing block 3, a fixing hole 4, a fixing shaft 5, an elastic groove 6, a return spring 7, an elastic block 8, a limiting plate 9, a rotating shaft 10, a clamping block 11, a clamping groove 12, an extension spring 13, a fixing plate 14, a pushing shaft 15, a compression spring 16 and a pushing plate 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

Referring to fig. 1-3, a multilayer printed circuit board comprises a circuit board 2, a base plate 1 is arranged at the bottom of the circuit board 2, two pressing blocks 3 are arranged at the top of the circuit board 2, fixing shafts 5 are fixedly connected to the bottoms of the pressing blocks 3, the fixing shafts 5 penetrate through the circuit board 2, two fixing holes 4 are formed in the base plate 1, the bottoms of the fixing shafts 5 extend into the fixing holes 4, the inner walls of the two sides in the fixing holes 4 are fixedly provided with the same limiting plate 9, one side of the limiting plate 9 is cross-rotatably connected with two rotating shafts 10, the side, close to each other, of each rotating shaft 10 is fixedly connected with a clamping block 11, the two sides of the fixing shaft 5 are respectively provided with clamping grooves 12, the side, close to each other, of the two clamping blocks 11 are respectively clamped with the two clamping grooves 12, the same pushing plate 17, two extension spring 13 that two axis of rotation 10 fixedly connected with symmetries set up press to be provided with elastic component on the movable block 3, and the top of elastic component and circuit board 2 is laminated mutually, the utility model discloses simple structure when fixing circuit board 2 on base plate 1, has used simple easy operation's structure, alright fix with in order to circuit board 2, traditional use glue of comparing is fixed, has made things convenient for maintenance personal to pull down the maintenance with it under the condition that does not damage circuit board 2 greatly.

Example two

The improvement is further based on the first embodiment: the pushing assembly comprises a fixing plate 14 fixedly installed in the fixing hole 4, a pushing shaft 15 is connected to the fixing plate 14 in a sliding mode, the top of the pushing shaft 15 is fixedly connected with the bottom of a pushing plate 17, a compression spring 16 is sleeved on the outer side of the pushing shaft 15, the top of the compression spring 16 is fixedly connected with the bottom of the fixing plate 14, the bottom of the compression spring 16 is fixedly connected with the outer side of the pushing shaft 15, the pushing assembly is used for pushing the two rotating shafts 10 to rotate, the pushing shaft 15 is started to move upwards at the moment, the pushing shaft 15 can push the pushing plate 17 to move upwards while compressing the compression spring 16, and then the two rotating shafts 10 can rotate in a crossed mode; the elastic assembly comprises two elastic grooves 6 arranged at the bottom of the pressing block 3, a return spring 7 is fixedly arranged on the inner wall of the top of each elastic groove 6, the bottom of each return spring 7 is fixedly connected with an elastic block 8 which is in sliding connection with the corresponding elastic groove 6, the bottom of each elastic block 8 is attached to the top of the corresponding circuit board 2, when the pressing block 3 is pressed to enable the fixing shaft 5 to move into the corresponding fixing hole 4, the fixing shaft 5 can be fixed by clamping the clamping blocks 11 and the clamping grooves 12, the pressing block 3 can be released at the same time, the pressing block 3 can be pushed to move upwards under the action of the return spring 7, the pressing block 3 can pull the fixing shaft 5 to move upwards, the clamping blocks 11 and the clamping grooves 12 can be attached more tightly at the moment, and the tightness of connection of the

circuit boards

1 and 2 is improved; the two sides of the pushing plate 17 are fixedly provided with inclined sliding blocks, the two rotating shafts 10 are fixedly provided with inclined sliding rails, the two inclined sliding blocks are respectively connected with the two inclined sliding rails in a sliding manner, and the friction force of the pushing plate 17 in longitudinal movement can be reduced by the inclined sliding blocks and the inclined sliding rails; a rotating shaft is fixedly arranged on one side of the limiting plate 9, penetrates through the two rotating shafts 10 and is rotatably connected with the rotating shafts 10, and the rotating shafts 10 can rotate; the fixed plate 14 is fixedly provided with a bearing, the pushing shaft 15 penetrates through the inner ring of the bearing and is in sliding connection with the inner ring of the bearing, and the friction force of the pushing shaft 15 in sliding can be reduced by the bearing.

In the embodiment, when the circuit board 2 is used, the structure of the circuit board is improved to a certain degree, and a corresponding functional adaptive component is added to the circuit board, so that the practical use effect of the circuit board is enhanced, and the circuit board 2 is firstly placed on the top mounting position of the substrate 1, then the pushing shaft 15 is pressed to move upwards, and the pushing shaft 15 compresses the compression spring 16 and simultaneously pushes the pushing plate 17 to move upwards when moving upwards, so that the pushing plate 17 can enable the two rotating shafts 10 to rotate in a crossed manner, at this time, the two fixing shafts 5 penetrate through the circuit board 2 and respectively extend into the two fixing holes 4, the moving block 3 is pressed, the pushing shaft 15 is finally loosened, the rotating shafts 10 can be reset under the reset elasticity of the tension spring 13 and the compression spring 16, at this time, the clamping block 11 can be clamped into the clamping groove 12, the fixation of the fixed shaft 10 is realized;

when the pressing block 3 is loosened, the pressing block 3 can be pushed to move upwards under the action of the reset spring 7, the fixing shaft 5 can be pulled to move upwards by the pressing block 3, the clamping block 11 and the clamping groove 12 can be attached more tightly at the moment, and the connection tightness of the substrate 1 and the circuit board 2 is improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The multilayer printed circuit board comprises a circuit board (2) and is characterized in that a substrate (1) is arranged at the bottom of the circuit board (2), two pressing blocks (3) are arranged at the top of the circuit board (2), a fixed shaft (5) is fixedly connected with the bottom of each pressing block (3), the fixed shaft (5) penetrates through the circuit board (2), two fixed holes (4) are formed in the substrate (1), the bottom of each fixed shaft (5) extends into each fixed hole (4), the inner walls of the two sides in each fixed hole (4) are fixedly provided with a same limiting plate (9), one side of each limiting plate (9) is rotatably connected with two rotating shafts (10) in a crossed mode, one side of each rotating shaft (10) close to each other is fixedly connected with a clamping block (11), and clamping grooves (12) are formed in the two sides of each fixed shaft (5), and one side that two fixture blocks (11) are close to each other respectively with two draw-in grooves (12) looks block, sliding connection has same kickboard (17) on two axis of rotation (10), the bottom fixedly connected with promotion subassembly of kickboard (17), two extension spring (13) that two axis of rotation (10) fixedly connected with symmetry set up, be provided with elastic component on the pressure piece (3), and the top of elastic component and circuit board (2) is laminated mutually.

2. The multilayer printed wiring board of claim 1, wherein the pushing assembly comprises a fixing plate (14) fixedly mounted in the fixing hole (4), a pushing shaft (15) is slidably connected to the fixing plate (14), the top of the pushing shaft (15) is fixedly connected to the bottom of the pushing plate (17), a compression spring (16) is sleeved on the outer side of the pushing shaft (15), the top of the compression spring (16) is fixedly connected to the bottom of the fixing plate (14), and the bottom of the compression spring (16) is fixedly connected to the outer side of the pushing shaft (15).

3. The multilayer printed circuit board of claim 1, wherein the elastic assembly comprises two elastic grooves (6) formed at the bottom of the pressing block (3), a return spring (7) is fixedly mounted on the inner wall of the top of each elastic groove (6), the bottom of each return spring (7) is fixedly connected with an elastic block (8) in sliding connection with the corresponding elastic groove (6), the bottom of each elastic block (8) is attached to the top of the corresponding circuit board (2), and when the pressing block (3) is pressed, the fixed shaft (5) moves into the corresponding fixed hole (4).

4. The multilayer printed circuit board of claim 1, wherein the two sides of the pushing plate (17) are fixedly provided with inclined sliding blocks, the two rotating shafts (10) are fixedly provided with inclined sliding rails, and the two inclined sliding blocks are respectively connected with the two inclined sliding rails in a sliding manner.

5. A multilayer printed wiring board according to claim 1, wherein a rotation shaft is fixedly mounted on one side of the position-limiting plate (9), and the rotation shaft penetrates through the two rotation shafts (10) and is rotatably connected with the rotation shafts (10).

6. A multilayer printed wiring board according to claim 2, wherein a bearing is fixedly mounted on the fixing plate (14), and the pushing shaft (15) penetrates through and is slidably connected with the inner ring of the bearing.