CN219697980U

CN219697980U - Printed circuit board assembly

Info

Publication number: CN219697980U
Application number: CN202223593848.9U
Authority: CN
Inventors: 闫红生; 张美良; 葛启顺
Original assignee: Longnan Dingtai Electronic Technology Co ltd
Current assignee: Longnan Dingtai Electronic Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-09-15
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a printed circuit board assembly, which comprises a bottom plate and a circuit board body, wherein two sides of the upper end surface of the bottom plate are fixedly connected with shock absorption rods, shock absorption plates are slidably connected to the outer side walls of the two shock absorption rods, two sides of the upper end surface of the shock absorption plates are fixedly connected with supporting rods, the top ends of the two supporting rods are fixedly connected with the circuit board body, shock absorption springs are arranged between the shock absorption plates and the bottom plate, and the shock absorption springs are wound on the outer side walls of the shock absorption rods. According to the utility model, the damping spring and the damping plate are used for buffering and unloading the energy during collision, so that the circuit board arranged on the supporting rod is prevented from receiving impact to the greatest extent, the effective buffering effect is achieved, the damage of the structure is avoided, the service life of the circuit board is prolonged, the fatigue damage of the amplified vibration load to the module is avoided, meanwhile, the breakage of the pins of the device or the welding spots on the module caused by the severe vibration environment is avoided, and the service life of the module is prolonged.

Description

Printed circuit board assembly

Technical Field

The utility model relates to the technical field of printed circuit boards, in particular to a printed circuit board assembly.

Background

Printed circuit boards, also known as printed wiring boards, play an important role in mass production of fixed circuits and in optimizing the layout of electrical appliances. With the increase of the level of intelligence, a plurality of printed circuit boards are required to combine to achieve a certain function, and when two or more circuit boards are included in a printed circuit board assembly, mechanical and electrical connection is required.

The bulletin number is: chinese patent CN208691659U discloses a printed circuit board vibration damping assembly for use with a printed circuit board and a heat conducting plate disposed on the printed circuit board, wherein the heat conducting plate is disposed on the printed circuit board and is provided with a plurality of fixing holes, and the vibration damping assembly is mounted on the fixing holes, wherein the vibration damping assembly comprises a lower bushing, a first vibration damping pad sleeved on the lower bushing, a second vibration damping pad, an upper bushing sleeved on the second vibration damping pad, the first vibration damping pad and the second vibration damping pad are nested in the mounting fixing holes of the heat conducting plate, the first vibration damping pad and the second vibration damping pad are made of rubber materials, and thus vibration energy is reduced and fatigue damage is reduced by using the rubber materials of the first vibration damping pad and the second vibration damping pad.

This patent has the following drawbacks: the vibration load of the chassis can be amplified when being transmitted to the module, the amplified vibration load can generate fatigue damage to the module, and the severe vibration environment can cause the breakage of pins or the welding spots of devices on the module to be unwelded, so that the module is invalid.

Accordingly, the present utility model now provides a printed circuit board assembly to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a printed circuit board assembly so as to solve the problem that the vibration load of a chassis is amplified when being transmitted to a module, and the amplified vibration load can cause fatigue damage to the module.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a printed circuit board assembly, includes bottom plate and circuit board body, bottom plate up end both sides fixedly connected with shock attenuation pole, two equal sliding connection has the shock attenuation board on the shock attenuation pole lateral wall, shock attenuation board up end both sides fixedly connected with branch, two branch top fixedly connected with circuit board body, be provided with damping spring between shock attenuation board and the bottom plate, damping spring winds on locating the shock attenuation pole lateral wall.

Further, the top end of the damping spring is fixedly connected with the lower end face of the damping plate, and the bottom end of the damping spring is fixedly connected with the upper end face of the bottom plate.

Further, the mounting groove has been seted up to bottom plate up end both sides, transversely be provided with the slide bar in the mounting groove, slide bar outside sliding connection has the slip cap, around being equipped with two buffer springs on the slip cap lateral wall, rotate on the relative both sides outer wall of shock attenuation board and be connected with the connecting rod, the connecting rod bottom rotates with the slip cap up end and is connected.

Further, one end of each buffer spring is fixedly connected with the inner wall of the mounting groove, and the other end of each buffer spring is fixedly connected with the outer side wall of the sliding sleeve.

Further, both ends of the sliding rod are fixedly connected with the inner side wall of the mounting groove.

Further, the shock-absorbing plate is of a circular ring structure, and the inner diameter of the shock-absorbing plate is larger than the outer diameter of the shock-absorbing rod.

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

according to the utility model, the damping spring and the damping plate are used for buffering and unloading the energy during collision, so that the circuit board arranged on the supporting rod is prevented from receiving impact to the greatest extent, the effective buffering effect is achieved, the damage of the structure is avoided, the service life of the circuit board is prolonged, the fatigue damage of the amplified vibration load to the module is avoided, meanwhile, the breakage of the pins of the device or the welding spots on the module caused by the severe vibration environment is avoided, and the service life of the module is prolonged.

Drawings

FIG. 1 is a schematic perspective view of a printed circuit board assembly;

fig. 2 is a schematic perspective view of the circuit board body removed;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

fig. 4 is a schematic front view of a printed circuit board assembly.

In the figure: 10. a bottom plate; 11. a circuit board body; 12. a shock-absorbing rod; 13. a shock absorbing plate; 14. a support rod; 15. a damping spring; 16. a mounting groove; 17. a slide bar; 18. a sliding sleeve; 19. a buffer spring; 20. and (5) connecting a rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides the following technical solutions:

in this scheme, including bottom plate 10 and circuit board body 11, bottom plate 10 up end both sides welded fastening has shock attenuation pole 12, equal sliding connection has shock attenuation board 13 on two shock attenuation pole 12 lateral walls, and shock attenuation board 13 up end both sides welded fastening branch 14, two branch 14 top welded fastening have circuit board body 11, are provided with damping spring 15 between shock attenuation board 13 and the bottom plate 10, and damping spring 15 winds on locating shock attenuation pole 12 lateral wall, avoids damping spring 15 to take place great deformation.

In addition, damping spring 15 top and damping plate 13 lower terminal surface welded fastening, damping spring 15 bottom and bottom plate 10 up end welded fastening, so damping spring 15 can not the skew when compressing.

Wherein, mounting groove 16 has been seted up to bottom plate 10 up end both sides, transversely is provided with slide bar 17 in the mounting groove 16, and slide bar 17 outside sliding connection has sliding sleeve 18, is equipped with two buffer springs 19 on the sliding sleeve 18 lateral wall around, rotates on the outer wall of the both sides opposite of shock attenuation board 13 to be connected with connecting rod 20, and connecting rod 20 bottom rotates with the sliding sleeve 18 up end to be connected.

One end of each buffer spring 19 is welded and fixed with the inner wall of the mounting groove 16, and the other end of each buffer spring 19 is welded and fixed with the outer side wall of the sliding sleeve 18, so that the buffer springs 19 cannot deviate when being compressed.

Wherein, both ends of the sliding rod 17 are welded and fixed with the inner side wall of the mounting groove 16.

Wherein, shock attenuation board 13 is ring shape structure, and the inside diameter of shock attenuation board 13 is greater than shock attenuation pole 12's external diameter.

Working principle: when the shock absorber is used, firstly, the shock absorber spring 15 and the shock absorber plate 13 are used for buffering and unloading force to the energy during collision, when the shock absorber plate 13 receives vertical downward pressure, the shock absorber plate 13 vertically moves downwards, so that the shock absorber plate 13 is in contact with the shock absorber spring 15, then the shock absorber spring 15 starts to compress, thereby avoiding the circuit board arranged on the support rod 14 to receive impact to the maximum extent, further achieving the effective buffering effect, avoiding the damage of the structure, prolonging the service life of the circuit board, further absorbing the shock absorber plate 13 through the buffer spring 19, and when the shock absorber plate 13 receives vertical downward pressure, the shock absorber plate 13 vertically moves downwards, and the connecting rod 20 drives the sliding sleeve 18 to transversely move, so that the sliding sleeve 18 extrudes the buffer spring 19, thereby achieving the effect of buffering and vibration energy, reducing fatigue damage.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described.

Claims

1. A printed circuit board assembly comprising a base plate (10) and a circuit board body (11), characterized in that: the novel shock absorber comprises a base plate (10), shock absorbing rods (12) fixedly connected to two sides of the upper end face of the base plate (10), shock absorbing plates (13) are slidably connected to the outer side walls of the shock absorbing rods (12), supporting rods (14) are fixedly connected to two sides of the upper end face of the shock absorbing plates (13), circuit board bodies (11) are fixedly connected to the top ends of the supporting rods (14), shock absorbing springs (15) are arranged between the shock absorbing plates (13) and the base plate (10), and the shock absorbing springs (15) are wound on the outer side walls of the shock absorbing rods (12).

2. A printed circuit board assembly according to claim 1, wherein: the top end of the damping spring (15) is fixedly connected with the lower end face of the damping plate (13), and the bottom end of the damping spring (15) is fixedly connected with the upper end face of the bottom plate (10).

3. A printed circuit board assembly according to claim 1, wherein: mounting grooves (16) are formed in two sides of the upper end face of the bottom plate (10), sliding rods (17) are transversely arranged in the mounting grooves (16), sliding sleeves (18) are slidably connected to the outer sides of the sliding rods (17), two buffer springs (19) are arranged on the outer side walls of the sliding sleeves (18) in a winding mode, connecting rods (20) are connected to the outer walls of two opposite sides of the damping plate (13) in a rotating mode, and the bottom ends of the connecting rods (20) are connected with the upper end faces of the sliding sleeves (18) in a rotating mode.

4. A printed circuit board assembly according to claim 3, wherein: one end of each buffer spring (19) is fixedly connected with the inner wall of the mounting groove (16), and the other end of each buffer spring (19) is fixedly connected with the outer side wall of the sliding sleeve (18).

5. A printed circuit board assembly according to claim 3, wherein: both ends of the sliding rod (17) are fixedly connected with the inner side wall of the mounting groove (16).

6. A printed circuit board assembly according to claim 1, wherein: the shock absorbing plate (13) is of a circular ring structure, and the inner diameter of the shock absorbing plate (13) is larger than the outer diameter of the shock absorbing rod (12).