阅读说明：本技术 电路板减震机构及采用该机构的车载设备 (Circuit board damping mechanism and vehicle-mounted equipment adopting same ) 是由 付绍航 李康健 刘拾玉 付世豪 于 2021-07-09 设计创作，主要内容包括：本申请公开一种路板减震机构及采用该机构的车载设备,该机构用于将具有通孔的电路板固定到底板,所述减震机构包括：集装板,所述集装板固设在所述底板上；固定螺栓,所述固定螺栓包括螺帽和螺柱,所述螺柱穿过所述通孔配合所述螺帽将所述电路板固定到所述集装板上；减震垫圈,所述减震垫圈设置在所述电路板与所述固定螺栓的螺帽之间。本申请中,减震胶圈的承载圈部承载起电路板的主要重量,在设备出现纵向晃动时,承载圈部与上部的减震垫圈构成上、下缓冲结构,同时利用胶圈本身的弹性在固定螺栓的作用下压紧电路板,避免电路板上下晃动的同时对电路板纵向的冲击进行缓冲。(The application discloses way board damper and adopt mobile unit of this mechanism, this mechanism is used for fixing the circuit board that has the through-hole to the bottom plate, damper includes: the assembly plate is fixedly arranged on the bottom plate; the fixing bolt comprises a nut and a stud, and the stud penetrates through the through hole and is matched with the nut to fix the circuit board on the assembled board; and the damping washer is arranged between the circuit board and the nut of the fixing bolt. In this application, the main weight of circuit board is born to the weight of the circle portion of bearing the weight of damping rubber ring, and when equipment vertically rocked, the circle portion of bearing the weight of constitutes upper and lower buffer structure with the cushion ring on upper portion, utilizes the elasticity of rubber ring itself to compress tightly the circuit board under fixing bolt's effect simultaneously, cushions the fore-and-aft impact of circuit board when avoiding the circuit board to rock from top to bottom.)

1. A circuit board damper mechanism for fixing a circuit board (1) having a through hole to a base plate (2), characterized by comprising:

the fixing bolt (32), the fixing bolt (32) comprises a nut (321) and a stud (322), and the stud (322) passes through the through hole and is matched with the nut (321) to fix the circuit board (1) on the bottom plate (31);

the shock absorption rubber ring (33), the shock absorption rubber ring (33) is sleeved on the outer side of the stud (322), the shock absorption rubber ring (33) is in a step shape and comprises an upper buffer ring portion (331) and a lower bearing ring portion (332), the buffer ring portion (331) penetrates through the through hole to form a buffer structure of the stud (322) and the inner end face of the through hole, and the bearing ring portion (332) is clamped between the circuit board (1) and the bottom plate (2) to form a bearing structure of the circuit board (1);

a cushion washer (34), the cushion washer (34) being disposed between the circuit board (1) and a nut (321) of the fixing bolt (32).

2. The circuit board shock absorbing mechanism according to claim 1, further comprising a package plate (31), wherein the package plate (31) is fixed on the base plate (2);

the fixing bolt (32), the fixing bolt (32) comprises a nut (321) and a stud (322), and the stud (322) passes through the through hole and is matched with the nut (321) to fix the circuit board (1) on the assembly board (31);

the shock absorption rubber ring (33), the shock absorption rubber ring (33) is sleeved on the outer side of the stud (322), the shock absorption rubber ring (33) is in a step shape and comprises an upper buffer ring portion (331) and a lower bearing ring portion (332), the buffer ring portion (331) penetrates through the through hole to form a buffer structure of the stud (322) and the inner end face of the through hole, and the bearing ring portion (332) is clamped between the circuit board (1) and the assembly plate (31) to form a bearing structure of the circuit board (1);

a cushion washer (34), the cushion washer (34) being disposed between the circuit board (1) and a nut (321) of the fixing bolt (32).

3. The circuit board shock absorbing mechanism according to claim 1 or 2, wherein the cushion ring portion (331) has a thickness in the axial direction of the stud (322) larger than the thickness of the mounted circuit board (1).

4. The circuit board shock absorbing mechanism according to claim 1, wherein the shock absorbing washer includes an upper rubber pad (341) and a lower rubber pad (342), the upper rubber pad (341) is disposed at a lower side of the nut (321), the lower rubber pad (342) is disposed between the upper rubber pad (341) and the circuit board (1), the lower rubber pad (342) is a soft pad, and the upper rubber pad (341) has a hardness greater than that of the lower rubber pad (342).

5. The damping mechanism for circuit board according to claim 2, characterized in that the assembly plate (31) has a plurality of fixing holes, at least two fixing holes are matched to form a fixing group matched and connected with the base plate (2), the fixing holes of the fixing group are provided with screws (319), and the assembly plate (31) is fixed on the base plate (2) through the screws (319).

6. The circuit board shock absorption mechanism according to claim 2, wherein a rivet nut (312) is provided on the assembly plate, and the stud (322) is engaged with the rivet nut (312) to fix the circuit board (1) to the assembly plate (31).

7. The circuit board damping mechanism according to claim 1 or 2, characterized in that the gap between the damping rubber ring (33) and the stud (322) is less than 1 mm.

8. The circuit board shock absorbing mechanism according to claim 3, wherein the thickness of the cushion ring portion (331) is at least 1mm greater than the thickness of the mounted circuit board (1).

9. A circuit board dampening mechanism according to claim 1 or 2, characterized in that the dampening washer (34) has an inner diameter smaller than the dampening rubber ring (33).

10. The circuit board shock absorbing mechanism according to claim 1 or 2, wherein the chassis (2) is a housing upper chassis or a lower chassis of a vehicle-mounted device.

11. An in-vehicle apparatus, characterized in that the apparatus employs the circuit board damper mechanism of any one of claims 1 to 10.

Technical Field

The invention belongs to the technical field of installation of a circuit board and a shell of vehicle-mounted equipment, and particularly relates to a circuit board damping mechanism and vehicle-mounted equipment adopting the same.

Background

In the vehicle-mounted equipment, due to the characteristics of an automobile, the damping of a circuit board of the vehicle-mounted equipment is always a big problem, in the current damping mechanism, the circuit board is mostly installed on a machine shell through a gasket and a bolt, and the circuit board is adhered to the machine shell through a glue adhesion mode by individual equipment. In the installation process of the circuit board, the shell and the circuit board are connected through bolts or glue, the vibration of the shell is directly transmitted to the circuit board inside, and the circuit board is easily damaged when the impact of the shell is large.

Disclosure of Invention

In order to solve the problem of connection between the shell of the circuit board and the circuit board, the application provides a circuit board damping mechanism and vehicle-mounted equipment adopting the mechanism.

Its damper includes: a circuit board damper mechanism for fixing a circuit board having a through hole to a base plate, the damper mechanism comprising:

the fixing bolt comprises a nut and a stud, and the stud penetrates through the through hole and is matched with the nut to fix the circuit board on the bottom plate;

the shock absorption rubber ring is sleeved on the outer side of the stud and is in a step shape, the shock absorption rubber ring comprises a buffer ring part at the upper part and a bearing ring part at the lower part, the buffer ring part penetrates into the through hole to form a buffer structure of the stud and the inner end face of the through hole, and the bearing ring part is clamped between the circuit board and the bottom plate to form a bearing structure of the circuit board;

and the damping washer is arranged between the circuit board and the nut of the fixing bolt.

Further, the device also comprises a container plate, wherein the container plate is fixedly arranged on the bottom plate;

the fixing bolt comprises a nut and a stud, and the stud penetrates through the through hole and is matched with the nut to fix the circuit board on the assembled board;

the shock absorption rubber ring is sleeved on the outer side of the stud and is in a step shape, the shock absorption rubber ring comprises a buffer ring part at the upper part and a bearing ring part at the lower part, the buffer ring part penetrates into the through hole to form a buffer structure of the stud and the inner end face of the through hole, and the bearing ring part is clamped between the circuit board and the assembly plate to form a bearing structure of the circuit board;

and the damping washer is arranged between the circuit board and the nut of the fixing bolt.

Further, the thickness of the buffer ring part along the axial direction of the stud is larger than that of the mounted circuit board.

Further, the shock-absorbing washer includes cushion and lower cushion, it sets up to go up the cushion the nut downside, the cushion sets up down go up the cushion with between the circuit board, the cushion is the cushion down, it is greater than to go up cushion hardness down the cushion.

Furthermore, a plurality of fixing holes are formed in the assembling plate, at least two fixing holes are matched with each other to form a fixing group which is matched and connected with the bottom plate, screws are arranged in the fixing holes of the fixing group, and the assembling plate is fixed on the bottom plate through the screws.

Furthermore, a press rivet nut is arranged on the assembly plate, and the stud is matched with the press rivet nut to fix the circuit board on the assembly plate.

Further, the clearance between the damping rubber ring and the stud is smaller than 1 millimeter.

Further, the thickness of the cushion ring part is at least 1mm larger than that of the mounted circuit board.

Further, the inner diameter of the shock absorption gasket is smaller than that of the shock absorption rubber ring.

Further, the bottom plate is an upper bottom plate or a lower bottom plate of a shell of the vehicle-mounted equipment.

The application also provides a vehicle-mounted device, and the device adopts any one of the circuit board damping mechanisms.

The application has the advantages that: (1) the integrated board is used as a buffer board between the bottom board of the shell and the circuit board in the application, the circuit board is not contacted with the shell of the host computer in the installation process, the vibration of the shell can not be directly transmitted to the circuit board, meanwhile, the double-layer structure of the shell and the integrated board enhances the mechanical strength of the shell, in addition, the integrated board plays a role in switching between the bottom board and the circuit board, no requirement is made on the size and specification of the circuit board, and the customization cost of the circuit board is reduced; (2) the damping washer is made of flexible materials and is in a step structure, the bearing ring part at the lower part is clamped between the circuit board and the assembling plate, the bearing ring part is in surface contact with the circuit board and the assembling plate under extrusion, the stress is uniform, the friction force of a soft rubber surface is large, the axial and radial vibration of the circuit board is avoided, the damping washer is soft, the contact surface is large and the stress is small, and the service life of the circuit board under severe working conditions is prolonged; the buffer ring part extends into the through hole to provide buffer between the stud and the circuit board; (3) the damping washer is matched with the bearing ring part and the screw cap to clamp the circuit board, and the damping washer, the circuit board and the bearing ring part are in surface contact with each other respectively to buffer the vibration of the circuit board in the radial direction of the stud.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of one embodiment of the present application;

FIG. 2 is an exploded schematic view of one embodiment of the structure of FIG. 1;

FIG. 3 is a schematic structural diagram illustrating an embodiment of a fixing bolt and circuit board mating structure according to the present application;

FIG. 4 is a schematic diagram of an explosive structure of one embodiment of the apparatus of the present application;

FIG. 5 is a schematic bottom view of an embodiment of the apparatus of the present application;

FIG. 6 is a schematic top view of one embodiment of the apparatus of the present application.

Detailed Description

The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all 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 application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present application will be understood in specific cases to those of ordinary skill in the art

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2, an embodiment of the present application, a circuit board damping mechanism for fixing a circuit board 1 having a through hole to a chassis 2, includes: the assembling plate 31, the assembling plate 31 is fixedly arranged on the bottom plate 2; the fixing bolt 32 comprises a nut 321 and a stud 322, and the stud 322 penetrates through the through hole and is matched with the nut 321 to fix the circuit board 1 on the assembly board 31; the shock-absorbing rubber ring 33 is sleeved outside the stud 322, the shock-absorbing rubber ring 33 is in a step shape and comprises a buffer ring part 331 at the upper part and a bearing ring part 332 at the lower part, the buffer ring part 331 penetrates into the through hole to form a buffer structure of the stud 322 and the inner end face of the through hole, and the bearing ring part 332 is clamped between the circuit board 1 and the assembly plate 31 to form a bearing structure of the circuit board 1; a shock-absorbing washer 34 disposed between the circuit board 1 and a nut 321 of the fixing bolt 32. In this embodiment, referring to fig. 3, the load-bearing ring portion of the damping rubber ring bears the main weight of the circuit board, when the device vertically shakes, the load-bearing ring portion and the damping washer on the upper portion form an upper and lower buffer structure, and the circuit board is pressed under the action of the fixing bolt by using the elasticity of the rubber ring, so that the vertical impact on the circuit board is buffered while the circuit board is prevented from shaking vertically.

The buffer ring portion 331 is thicker than the mounted circuit board 1 in the axial direction of the stud. In this embodiment, the cushion ring portion extends to between the through hole of fixing bolt and circuit board, and the cushion ring portion plays the horizontal impact buffering between the through hole of circuit board and the fixing bolt, constitutes the location structure to the circuit board through-hole with the cooperation of cushion ring, bearing ring portion simultaneously, makes to have direct contact between circuit board and the fixing bolt, avoids rigid fixing bolt to produce the damage to the circuit board under the impact force effect.

In the embodiment of fig. 1 and 2, the circuit board 1 having the through hole may be directly fixed to the chassis base 2 without using a mounting board. Namely, the bottom plate 2 is punched or the fixing holes between the assembling plate and the bottom plate are utilized to directly fix the fixing bolts 32 on the bottom plate, the damping rubber ring and the circuit board are directly connected by the bottom plate, the assembling plate 31 is reduced, and the cost is reduced. However, this structure has higher requirements for the bottom plate than the container plate mechanism, and the requirements must be adapted to the circuit board, which is not as flexible as the structure of the container plate 31. In the invention, the container plate also has a switching function, the container plate is in a pure plate shape, the bottom plate is generally an equipment shell, the process of punching holes at various positions on the container plate to install the circuit boards is simple and quick relative to the process of punching holes on the shell, the cost is low, the circuit boards with different sizes and specifications can be installed by punching holes at different positions of the container plate with the same specification and then fixed on the bottom plate with the same specification, and the installation cost of the circuit boards and the bottom plate is reduced.

Referring to fig. 3, in this embodiment, the cushion washer includes an upper rubber pad 341 and a lower rubber pad 342, the upper rubber pad is disposed on the lower side of the nut 321, the lower rubber pad is disposed between the upper rubber pad and the circuit board 1, the lower rubber pad is a soft pad, and the hardness of the upper rubber pad is greater than that of the lower rubber pad. The damping washer adopts the upper and lower cooperation structure of this embodiment, and the upper rubber cushion of upper portion stereoplasm avoids taking place the adhesion with the nut, guarantees that the nut can fully rotate and compresses tightly the circuit board on earth, and the soft lower rubber cushion of issuing then mainly plays the cushioning effect, guarantees to distribute the pressure that the nut transmitted down evenly on the circuit board, avoids the uneven atress of circuit board. The utility model provides a go up the bilayer structure of cushion and cushion down, lower cushion elasticity is good, for nut and circuit board provide elasticity respectively, screws up the back at the nut and passes through the cushion evenly distributed with elasticity to the nut on, can also play the tight effect of self-tightening to the nut, and fixing bolt is not hard up along with time lapse in avoiding the use.

Referring to fig. 1-2, the assembly plate 31 has a plurality of fixing holes, at least two fixing holes are mutually matched to form a fixing group cooperatively connected with the bottom plate 2, screws 319 are disposed in the fixing holes of the fixing group, and the assembly plate 31 is fixed to the bottom plate 2 through the screws. In this application, the collection dress board is fixed through the point between fixed punch combination and the bottom plate, and the circuit board is fixed through fixing bolt and collection dress board point again, and collection dress board can full play cushioning effect, and furthest's damping bottom plate is to the impact of circuit board. The material of collecting plate is for having certain elasticity but the material that elasticity is not too good, also avoids elasticity too good to produce the circuit board and quivers when playing the shock attenuation.

Referring to fig. 3, a rivet nut 312 is disposed on the assembly plate, and the stud 322 cooperates with the rivet nut to fix the circuit board 1 to the assembly plate 31. In this technical scheme, press and rivet nut and double-screw bolt cooperation, avoid double-screw bolt and the direct spiro union of collection dress board, extension collection dress board life-span, follow-up maintenance can simply change press and rivet nut or double-screw bolt and collection dress board need not change. Meanwhile, the mode that specification holes are formed in the assembling plate instead of screw holes is adopted, the existing press riveting nuts and fixing bolts are convenient to select and match, and the large-scale production of the application is facilitated.

Referring to fig. 3, in this embodiment, a gap between the damping rubber ring 33 and the stud 322 is less than 1 mm. The damping rubber ring and the stud are not tightly attached, but a gap smaller than 1mm is reserved, so that the stud can be conveniently penetrated and sleeved with the damping rubber ring, and the installation speed is improved.

Referring to fig. 3, in the present embodiment, the thickness of the cushion portion 331 is larger than the thickness of the mounted circuit board 1 by at least 1 mm. In this embodiment, the thickness of buffering circle portion is greater than circuit board thickness, and the nut extrudees the circuit board inner wall and the bolt outside with buffering circle portion through the cushion ring during installation, makes the further extrusion of buffering portion between circuit board and double-screw bolt, avoids the circuit board transversely to rock, has improved the fastness that the circuit board is fixed.

Referring to fig. 3, in one embodiment of the present application, the cushion ring inner diameter is smaller than the cushion rubber ring 33 inner diameter. Among this technical scheme, damping washer fully gets up damping rubber ring shade, improves the fixed compact type of nut, avoids the damping washer internal diameter of buffer ring portion extrusion, has improved product life. Simultaneously can also cooperate in this embodiment buffer ring portion 331 thickness be greater than by 1 thickness at least 1mm of installation circuit board and damping rubber ring 33 with the structure that the clearance is less than 1 millimeter between the double-screw bolt 322 guarantees under the shade and the oppression of damping washer, and damping rubber ring can initiatively fill up the space between circuit board and the double-screw bolt after the nut is screwed up, for producing the extrusion from the tight force between circuit board and the double-screw bolt, improves the fastness of product, avoids the circuit board to transversely rock.

The bottom plate 2 is an upper bottom plate or a lower bottom plate of a shell of the vehicle-mounted equipment. In this embodiment, the bottom plate of this application can be the upper plate of equipment shell, adopts the mode of suspension installation circuit board, or for the lower plate, adopts the mode of support installation circuit board. The upper and lower bottom plates of the present application are not simply up and down in the direction of gravity, but are determined with reference to the apparatus direction.

An in-vehicle electronic apparatus that employs the damper mechanism according to any one of the above embodiments. With reference to fig. 4-6, the present application provides an in-vehicle device. In this equipment, except the damper of this application, in order to make things convenient for the heat dissipation of circuit board, be equipped with radiating area 41 on the upper plate of equipment, be equipped with radiating area 21 down on the lower plate of equipment, refer to fig. 5, fig. 6, go up radiating area and all adopt parallel arrangement's arch and the heat dissipation runner between the arch with lower radiating area, improved the convection current of air in the heat dissipation runner when having increased the upper and lower heat radiating area of equipment through the cooperation of arch and runner, further optimized the heat dissipation of this application.

The scope of the present invention is not limited thereto, and any changes or substitutions of the technical solutions which can be conceived without inventive labor should be covered within the scope of the present invention. The protection scope of the present invention is subject to the protection scope defined by the claims.