CN213755085U

CN213755085U - Prevent electrical apparatus box that PCBA board rocked

Info

Publication number: CN213755085U
Application number: CN202022647610.4U
Authority: CN
Inventors: 胡兆利; 邵志勇; 陈可璜
Original assignee: Xiamen Hongfa Automotive Electronics Co Ltd
Current assignee: Xiamen Hongfa Automotive Electronics Co Ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-07-20
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses an electric appliance box for preventing PCBA (printed circuit board assembly) board from shaking, which comprises a PCBA board, a shell and a cover body, wherein the shell and the cover body are connected; a plurality of limiting parts are distributed on the inner wall surface of the shell, and each limiting part is in clearance fit or interference fit with the side surface 0 of the PCBA board. The utility model discloses can utilize each spacing portion to strengthen spacingly to the PCBA board, avoid the PCBA board to rock because of the relatively poor appearance of the high uniformity of each first pressfitting portion.

Description

Prevent electrical apparatus box that PCBA board rocked

Technical Field

The utility model relates to an electrical apparatus box especially relates to an electrical apparatus box that prevents PCBA board and rock.

Background

At present, a relatively reliable fixing mode for a PCBA board is realized by using screws, but for an electrical box with a small size, the size of the PCBA board is limited by the internal space of the electrical box, so that the PCBA board cannot be fixed by using the screws. Therefore, some press-fit columns arranged in the electric appliance box carry out press-fit limitation on the PCBA, but the requirement on the height consistency of the press-fit columns is high, and once the heights of the press-fit columns are not completely consistent, the function of fixing the PCBA cannot be achieved, so that the PCAB plate can generate large shaking, and the performance stability of the electric appliance box is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prevent electrical apparatus box that PCBA board rocked, it can solve prior art and adopt the pressfitting post to carry out the spacing problem that exists of pressfitting to the PCBA board.

The utility model provides a technical scheme that its technical problem adopted is: an electric appliance box for preventing a PCBA board from shaking comprises the PCBA board, a shell and a cover body which are connected, wherein the PCBA board is positioned in the shell, and a plurality of first pressing parts for pressing the PCBA board to face one side of the cover body are arranged in the cover body; a plurality of limiting parts are distributed on the inner wall surface of the shell, and each limiting part is in clearance fit or interference fit with the side surface 0 of the PCBA board.

Furthermore, a plurality of second pressing parts used for pressing one surface, back to the cover body, of the PCBA board are arranged in the shell, and the second pressing parts correspond to the first pressing parts one to one.

Further, the first pressing part is a pressing column, and the second pressing part is a pressing convex bud.

Furthermore, the limiting part is provided with an L-shaped structure, one side of the L-shaped structure is in contact with one side of the PCBA, which is back to the cover body, and the other side of the L-shaped structure is in clearance fit or interference fit with the side surface 0 of the PCBA.

Furthermore, the tail part of the other side of the L-shaped structure is provided with a guide inclined plane which guides the PCBA to move along the direction matched with the other side of the L-shaped structure.

Furthermore, the limiting part is a limiting convex rib extending along the depth direction of the shell.

Further, the shell is connected with the cover body in a buckling mode.

Furthermore, the inner wall surfaces of two ends of the shell in the length direction are respectively provided with a clamping groove, the outer side surfaces of two ends of the cover in the length direction are respectively provided with a clamping protrusion, and the clamping protrusions and the clamping grooves are clamped one by one.

Furthermore, the inner wall surfaces of two ends of the shell in the length direction are respectively provided with abdicating guide grooves positioned outside the clamping grooves, and one ends of the abdicating guide grooves far away from the clamping grooves are led out from the opening end of the shell; each clamping protrusion enters the shell along the corresponding abdicating guide groove.

Furthermore, a circle of glue dispensing groove is formed between the peripheral edge part of the outer part of the cover body and the peripheral inner wall surface of the opening end of the shell.

Furthermore, the PCBA board is provided with at least one electric connection structure, and the shell is provided with at least one abdicating structure in one-to-one correspondence with the at least one electric connection structure; the stepping structure comprises a plurality of through holes and a protective shell positioned outside the through holes, the electric connection structure comprises a plurality of contact pins, the contact pins and the through holes correspond to each other one by one, and each contact pin penetrates through the corresponding through hole and is exposed in the protective shell.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. because the utility model discloses adopting when first pressfitting portion pushes down the PCBA board, still at a plurality of spacing portions of internal face distribution of casing, and each spacing portion respectively with 0 clearance fit or interference fit in PCBA board side, therefore, the utility model discloses can utilize each spacing portion to strengthen spacingly to the PCBA board, avoid the PCBA board to appear rocking because of the relatively poor appearance of the high uniformity of each first pressfitting portion.

2. Be equipped with in the casing and be used for pushing down the PCBA board is back to a plurality of second pressfitting parts of the one side of lid, these a plurality of second pressfitting parts with a plurality of first pressfitting part one-to-ones make the utility model discloses an aspect can utilize the cooperation of first pressfitting part and second pressfitting part to press the PCBA board tighter, and on the other hand can utilize second pressfitting part to make the heat dissipation clearance have between PCBA board and the casing to make things convenient for the PCBA board heat dissipation.

3. Spacing portion is equipped with L font structure, one side of this L font structure with the PCBA board is dorsad the one side contact of lid, the another side of this L font structure with 0 clearance fit or interference fit in PCBA board side, make spacing portion can not only spacing PCBA board, can also play the supporting role to the marginal part of PCBA board, makes the whole atress of PCBA board more even.

4. The shell is connected with the cover body in a buckling mode, so that the shell and the cover body are convenient to install.

5. The outside all around edge position of lid with enclose into a circle point glue groove between the internal face all around of casing open end, make the utility model discloses can utilize this point glue groove to carry out the point and glue sealedly to improve holistic water-proof effects.

The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the utility model discloses an electrical apparatus box that prevents PCBA board and rock is not limited to the embodiment.

Drawings

FIG. 1 is an exploded schematic view of the present invention;

fig. 2 is a schematic structural view of the cover body of the present invention;

fig. 3 is a schematic structural diagram of the housing of the present invention;

fig. 4 is a rear view of the present invention (without the flexible sheath);

fig. 5 is a cross-sectional view a-a of the present invention;

fig. 6 is a B-B sectional view of the present invention;

fig. 7 is a schematic perspective view of the present invention (without the flexible sheath);

fig. 8 is a schematic perspective view of the present invention (including the flexible sheath).

Detailed Description

In an embodiment, please refer to fig. 1 to 8, the electrical box for preventing the PCBA board from shaking of the present invention includes a PCBA board 2, and a casing 1 and a cover 3 connected to each other, wherein the PCBA board 2 is located in the casing 1, and the cover 3 is provided with a plurality of first pressing portions for pressing one side of the PCBA board 2 facing the cover 3; a plurality of limiting parts are distributed on the inner wall surface of the periphery of the shell 1, and each limiting part is in clearance fit or interference fit with the side surface 0 of the PCBA board 2.

In this embodiment, the housing 1 is provided with a plurality of second pressing portions for pressing a surface of the PCBA board 2 opposite to the cover 3, and the plurality of second pressing portions correspond to the plurality of first pressing portions one to one. The first stitching part is a stitching column 31, and the second stitching part is a stitching bract 12. The number of the pressing columns 31 is specifically four, the four pressing columns 31 are distributed in four corners, a reinforcing rib 32 is connected between two pressing columns, and a reinforcing rib 32 is connected between the other two pressing columns. Similarly, the number of the pressing protrusions 12 is four, and the four pressing protrusions 12 are distributed in four corners. In other embodiments, the first press-fit portion is a press-fit plate, and/or the second press-fit portion is a press-fit post or a press-fit plate.

In this embodiment, the limiting portion is a limiting convex rib 11 extending along the depth direction of the housing 1, an L-shaped structure 111 is disposed on the limiting convex rib 11, one side of the L-shaped structure 111 contacts with a side of the PCBA board 2 facing away from the cover 3, and the other side of the L-shaped structure 111 is in clearance fit or interference fit with the side 0 of the PCBA board 2. The tail part of the other side of the L-shaped structure 111 is provided with a guide inclined plane 112, and the guide inclined plane 112 guides the PCBA board 2 to move along the direction matched with the other side of the L-shaped structure 111.

In this embodiment, the housing 1 is connected to the cover 3 by a snap fit. Specifically, the inner wall surfaces of two ends of the housing 1 in the length direction are respectively provided with a clamping groove 13, the outer side surfaces of two ends of the cover 3 in the length direction are respectively provided with a clamping protrusion 33, and the clamping protrusions 33 are clamped with the clamping grooves 13 one by one. The inner wall surfaces of two ends of the shell 1 in the length direction are respectively provided with a yielding guide groove 14 located outside the clamping groove 13, and one end, far away from the clamping groove 13, of the yielding guide groove 14 is led out from the opening end of the shell 1. Each locking protrusion 33 enters the housing 1 through the corresponding abdicating guide groove 14, and finally is locked into the corresponding locking groove 13.

In this embodiment, the peripheral edge position of the lid 3 outside with enclose into a circle glue dispensing groove 5 between the internal face all around of casing 1 open end, as shown in fig. 7, can glue the gap between casing 1 and the lid 3 through this glue dispensing groove 5 and glue sealedly, thereby improve the utility model discloses a water-proof effects.

In this embodiment, the PCBA board 2 is provided with at least one electrical connection structure, and the housing 1 is provided with at least one abdicating structure corresponding to the at least one electrical connection structure one to one. Specifically, the number of the yielding structures and the number of the electric connection structures are two respectively. The yielding structure comprises a plurality of through holes 15 and a protective shell 16 positioned outside the through holes 15, the electric connection structure comprises a plurality of pins 21, the pins 21 correspond to the through holes 15 one by one, and each pin 21 penetrates through the corresponding through hole 15 and is exposed in the protective shell 16. The end of the shell 1 matched with the cover body 3 is an open end, and the through hole 15 and the protective shell 16 are arranged outside the end of the shell 1 opposite to the open end.

In this embodiment, the present invention further includes a flexible sheath 4, the flexible sheath 4 is made of rubber, and is sleeved outside the casing 1 and the cover 3 (forming a local wrapping), and the casing 1 and the cover 3 can be taken out; the flexible sheath 4 is provided with a plurality of mounting ears 41. The mounting lug 41 is n-shaped, and two ends of the mounting lug are respectively connected with the outer side surface of the flexible sheath 4 integrally (i.e. the mounting lug 41 and the flexible sheath 4 are integrally formed). The number of the mounting ears 41 is two, and the two mounting ears 41 are respectively located at two ends of the flexible sheath 4 in the length direction.

The utility model discloses an electrical apparatus box that prevents PCBA board and rock, during the assembly, put PCBA board 2 into casing 1 first, at this moment, one side of each pressfitting protruding bud 12, the L font structure 111 of each spacing protruding muscle 11 contacts with PCBA board 2 one side back to lid 3 respectively, one side of the L font structure 111 of each spacing protruding muscle 11 respectively with PCBA board 2 side 0 clearance fit or interference fit; then the cover body 3 is connected with the shell body 1 in a buckling way, and at the moment, the pressing columns 31 on the cover body 3 respectively press one surface of the PCBA board 2 facing the cover body 3; then, dispensing and sealing are carried out at a dispensing slot 5 formed by the enclosing of the cover body 3 and the shell body 1; finally, the flexible sheath 4 is pulled over, as shown in fig. 8.

The utility model discloses an electrical apparatus box that prevents PCBA board and rock because a plurality of spacing protruding muscle 11 of the internal face distribution all around of its casing 1 respectively with PCBA board 2 side 0 clearance fit or interference fit, therefore, the utility model discloses can utilize each spacing protruding muscle 11 to strengthen spacingly to PCBA board 2, avoid PCBA board 2 to rock because of the relatively poor appearance of the highly uniform nature of each pressfitting post 31.

The utility model discloses a prevent electrical apparatus box that PCBA board rocked is applied to the motorcycle, during the installation, only needs to embolia flexible sheath 4 with the electrical apparatus box body (being equipped with PCBA board 2 in) that casing 1 and lid 3 constitute, recycles two installation ears 41 on the flexible sheath 4 and is connected the installation of accomplishing whole electrical apparatus box with two inserted sheet cooperations and fix. Specifically, the two inserting pieces are respectively approximately in ㄈ shapes, the two ends of each inserting piece are not consistent in transverse extension length, one end of each inserting piece is short, the inserting piece can be clamped on the upper end face of the mounting lug 41 after penetrating through the mounting lug 41 of the flexible sheath 4, the other end of each inserting piece is long enough and is provided with a mounting hole, and the inserting pieces can be locked on the corresponding part of the motorcycle through screws. When the electrical box body and/or the PCBA board 2 need to be replaced or maintained, the electrical box body is only required to be taken down from the flexible sheath 4, and the flexible sheath 4 does not need to be detached. After replacement or maintenance, the electrical box body is sleeved into the flexible sheath 4. Therefore, the utility model discloses can realize the convenient of electrical apparatus box body and install and remove.

The above-mentioned embodiment is only used for further explaining the utility model discloses an electrical apparatus box that prevents PCBA board and rock, nevertheless the utility model discloses not limit to the embodiment, all be according to the utility model discloses a technical entity does any simple modification, equivalent change and modification to above embodiment, all fall into the technical scheme's of the utility model protection within range.

Claims

1. An electric appliance box for preventing a PCBA board from shaking comprises the PCBA board, a shell and a cover body which are connected, wherein the PCBA board is positioned in the shell, and a plurality of first pressing parts for pressing the PCBA board to face one side of the cover body are arranged in the cover body; the method is characterized in that: a plurality of limiting parts are distributed on the inner wall surface of the shell, and each limiting part is in clearance fit or interference fit with the side surface 0 of the PCBA board.

2. The appliance box of claim 1, which prevents the PCBA board from shaking, wherein: the shell is internally provided with a plurality of second pressing parts used for pressing one surface of the PCBA back to the cover body, and the second pressing parts are in one-to-one correspondence with the first pressing parts.

3. The appliance box of claim 2, which prevents the PCBA board from shaking, wherein: the first pressing part is a pressing column, and the second pressing part is a pressing convex bud.

4. The appliance box of claim 1, which prevents the PCBA board from shaking, wherein: the limiting part is provided with an L-shaped structure, one side of the L-shaped structure is in contact with one side, back to the cover body, of the PCBA, and the other side of the L-shaped structure is in clearance fit or interference fit with the side face 0 of the PCBA.

5. The appliance box of claim 4, which prevents the PCBA board from shaking, wherein: the tail part of the other side of the L-shaped structure is provided with a guide inclined plane which guides the PCBA to move along the direction matched with the other side of the L-shaped structure.

6. The appliance cartridge of claim 1, or 4, or 5, which prevents the PCBA board from shaking, wherein: the limiting part is a limiting convex rib extending along the depth direction of the shell.

7. The appliance box of claim 1, which prevents the PCBA board from shaking, wherein: the shell is connected with the cover body in a buckling mode.

8. The appliance box of claim 7, which prevents the PCBA from rocking, wherein: the inner wall surfaces of two ends of the shell in the length direction are respectively provided with a clamping groove, the outer wall surfaces of two ends of the cover in the length direction are respectively provided with a clamping protrusion, and the clamping protrusions and the clamping grooves are clamped one by one; the inner wall surfaces of two ends of the shell in the length direction are respectively provided with a abdicating guide groove positioned outside the clamping groove, and one end of the abdicating guide groove, which is far away from the clamping groove, is led out from the opening end of the shell; each clamping protrusion enters the shell along the corresponding abdicating guide groove.

9. The appliance box of claim 1, which prevents the PCBA board from shaking, wherein: a circle of glue dispensing groove is formed between the peripheral edge part of the outer part of the cover body and the inner wall surface of the periphery of the opening end of the shell.

10. The appliance box of claim 1, which prevents the PCBA board from shaking, wherein: the PCBA board is provided with at least one electric connection structure, and the shell is provided with at least one abdicating structure in one-to-one correspondence with the at least one electric connection structure; the stepping structure comprises a plurality of through holes and a protective shell positioned outside the through holes, the electric connection structure comprises a plurality of contact pins, the contact pins and the through holes correspond to each other one by one, and each contact pin penetrates through the corresponding through hole and is exposed in the protective shell.