CN217509192U

CN217509192U - Prevent interference-preventing structure that back-off PCBA installation was interfered

Info

Publication number: CN217509192U
Application number: CN202220973039.1U
Authority: CN
Inventors: 胡健健; 牛骁; 裘荣波; 张涛; 张淑亭
Original assignee: Foote Intelligent Hangzhou Information Technology Co ltd; Zhejiang Fute Technology Co ltd
Current assignee: Foote Intelligent Hangzhou Information Technology Co ltd; Zhejiang Fute Technology Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-09-27
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses a prevent interference-proof structure that back-off PCBA installation was interfered aims at solving traditional PCBA back-off dismouting or back-off installation time, and there is interference, unable normal dismouting or the not enough of installation in the device on the PCBA and the casing on the device. The utility model comprises a shell for back-off installation of a PCBA board, a plurality of movable elastic pieces are arranged close to the inner wall of the shell, an elastic structure is arranged between the movable elastic pieces, the elastic structure can lead the movable elastic pieces to be close to the center, a plurality of fixing pieces are arranged on the PCBA board, and the PCBA board is arranged on the shell in a back-off way through the clamping match of a soldering tin fixing piece on the PCBA board and the movable elastic pieces; the invention can reduce the installation time of the PCBA, reduce the disassembly and assembly or installation interference, ensure that the PCBA can be normally disassembled and assembled, and realize the convenience.

Description

Prevent that back-off PCBA installation from interfering prevents interfering structure

Technical Field

The utility model relates to a relevant technical field of auto parts, more specifically say, it relates to a prevent interference structure that prevents back-off PCBA installation interference.

Background

The PCBA is an important component in all electronic components including new energy automobiles. With the continuous development of new energy automobile models, diversified requirements are provided for the PCBA assembly modes of the vehicle-mounted OBC and the DC/DC converter. When traditional on-vehicle OBC, DC/DC converter were arranged in the frame level, be subject to the cost of metalwork and electronic device's heat dissipation demand, PCBA needs the back-off dismouting often, and during the back-off installation, because the device is not convenient for survey in the below, the device on the PCBA often interferes with the device on the casing, unable normal installation.

Chinese patent publication No. CN110167260A, publication No. 2019, 08, 23, entitled a mounting structure for a PCBA board for a vehicle-mounted charger OBC and a voltage converter DCDC, and the application discloses a mounting structure for a PCBA board for a vehicle-mounted charger OBC and a voltage converter DCDC, including: be boxlike machine will, be close to the machine and leave the first PCBA board of bottom installation, set up the second PCBA board of first PCBA board top, be connected to board connecting terminal through a plurality of car grade boards between first PCBA board and the second PCBA board. The invention provides a structure which can well absorb vibration energy, can adapt to part of processing errors, is convenient to install and improves the production efficiency, and has the defects that when the PCBA is inversely assembled or inversely assembled, devices on the PCBA are interfered with devices on a shell, and the PCBA cannot be normally assembled or assembled.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes when traditional PCBA back-off dismouting or back-off installation, there is the interference in device on the last device of PCBA and the casing, and unable normal dismouting or the not enough of installation provide one kind and prevent interfering structure of back-off PCBA installation interference, and it can reduce PCBA's installation time, reduces dismouting or installation interference, makes PCBA can normal dismouting or installation, realizes the convenience.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a prevent interfering structure of preventing that back-off PCBA installation is interfered, is close to in shell inner wall position department including the shell that is used for the installation of PCBA board back-off and is provided with a plurality of movable shell fragments, installs elastic construction between the movable shell fragment, and elastic construction can make movable shell fragment draw close to the center, is provided with a plurality of mountings on the PCBA board, through mounting and the cooperation of movable shell fragment chucking on the PCBA board, makes the PCBA board realize the back-off and install on the shell.

The elastic structural part is annular, and the circumference of the elastic structural part is smaller than that of the envelope surface of the movable device in the horizontal direction in a natural state; the elasticity of the elastic structural part is larger than the overturning force of the movable device. The tensile force of the elastic structural part can enable the movable device to turn over a certain angle theta in the moving direction by taking the shell point location column as a rotation center to approach the center to the extreme point;

firstly, the elastic structural member is sleeved on the pre-fixed movable spring piece of the shell, so that the movable spring piece is close to the center, and a reserved space is reserved for downward installation of the PCBA, and the PCBA can be smoothly installed. The elastic structural member has good telescopic ductility, can be repeatedly used for many times, and well meets the requirement of multiple times of disassembly and assembly of PCBA debugging. Through the taut fixed of elastic structure spare, compare in traditional manual, rock the regulation shell fragment position, can reduce PCBA's installation time, reduce the installation and interfere, realize the convenience.

Preferably, the elastic structure is an insulator and has better expansion ductility. After the PCBA is installed, the elastic structural part is left in the shell and cannot generate a conductive action to cause short circuit of an electronic device; the elastic structural member meets the flame retardant rating of UL 94V-0. After the PCBA is installed, the elastic structural part is left in the shell, and the electronic device cannot be damaged due to combustion.

Preferably, the movable elastic sheet comprises an installation section and a clamping section, and the installation section and the clamping section form an included angle of 90 degrees. The structure is convenient for the installation of a PCBA board and the use of an elastic structure.

Preferably, the mounting section is provided with a plurality of mounting holes, the shell is internally provided with a plurality of mounting upright posts, and the movable elastic sheet is connected to the mounting upright posts by bolts penetrating through the mounting holes. The mounting upright post structure is convenient for equal-height mounting and fixing of the three movable elastic sheets.

Preferably, the clamping section is provided with a protrusion.

Preferably, the fixing part comprises a first mounting frame, a second mounting frame, a plurality of soldering tin pieces and soldering bars arranged on the soldering tin pieces, the soldering tin pieces are arranged on the second mounting frame, the second mounting frame extending out of the soldering bars is connected with the first mounting frame, and the first mounting frame is arranged on the PCBA board. The structure can realize the matching installation of the PCBA board and the installation shell (namely the shell) through the fixing piece; a plurality of through holes are formed in the first mounting frame, and a plurality of bosses avoiding the through holes are formed in the section surface of the first mounting frame.

Preferably, the first mounting frame is provided with a plurality of buckles, each buckle comprises a cylinder section, a through open slot is formed in the cylinder section, the end of the cylinder section is divided into two branched sections, and the branched sections are provided with semi-conical heads. The radius of the bottom of the semi-conical head is larger than the radius of the column body section, so that after the buckle is inserted into the mounting hole in the PCBA board, the clamping is realized, and the first mounting bracket is fixed with the PCBA board.

As the preferred, be equipped with a plurality of mounting grooves on the two inner walls of mounting bracket, be equipped with hollow out construction's preforming in the mounting groove diapire, the soldering piece sets up in the mounting groove, and the mounting groove opening part is provided with guard flap, and guard flap box mounting bracket sub-assembly sets up between shell inner wall and activity shell fragment, preforming and chucking section butt. The structure is convenient for the clamping and matching of the fixing piece and the movable elastic sheet.

Preferably, the pressing plate is provided with a limiting column, the soldering part is provided with a through limiting hole, and the limiting column and the limiting hole are in alternate fit when the soldering part is installed in the installation groove.

Preferably, a plurality of support columns are arranged on the shell. Be equipped with the internal thread in the support column end wall, when the PCBA board was installed on the shell, carry out the screw and can realize that the support of PCBA board is fixed with the support column cooperation.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses, through the taut fixed of elasticity structure, can reduce PCBA's installation time, reduce the installation and interfere, realize the convenience.

Drawings

Fig. 1 is an exploded view of an interference prevention structure for preventing installation interference of a back-off PCBA according to the present invention;

FIG. 2 is a schematic structural view of the combination of the housing, the movable spring plate and the elastic structure of the present invention;

fig. 3 is a schematic structural view of the movable spring plate of the present invention;

fig. 4 is a mechanism schematic diagram of the fixing member of the present invention;

in the figure: the mounting structure comprises a shell 1, a movable elastic sheet 2, an elastic structure 3, a fixing piece 4, a cavity 5, a mounting section 6, a clamping section 7, a mounting hole 8, a mounting upright post 9, a protrusion 10, a mounting frame I11, a mounting frame II 12, a soldering tin piece 13, a soldering tin bar 14, a buckle 15, an open slot 16, a forked section 17, a semi-conical head 18, a mounting slot 19, a pressing sheet 20, a protective baffle 21, a supporting column 22, a PCBA plate 23 and a column body section 24.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1: an anti-interference structure for preventing back-off PCBA installation interference (see attached figure 1-4) comprises a shell 1 for back-off installation of a PCBA board 23, three movable elastic pieces 2 arranged on the shell, elastic structures 3 arranged between the movable elastic pieces and fixing pieces 4 arranged on the PCBA board, wherein a cavity 5 is arranged on the shell, the movable elastic pieces 2 are arranged at positions close to the side walls of the cavity, the elastic structures 3 can enable the movable elastic pieces 2 to be close to the center, the number of the movable elastic pieces 2 is three, the number of the fixing pieces 4 is three, and the PCBA board is arranged on the shell in a back-off mode through the clamping fit of the fixing pieces on the PCBA board and the movable elastic pieces; the elastic structure is an insulator and has better telescopic ductility; the movable elastic sheet comprises an installation section 6 and a clamping section 7, and the installation section 6 and the clamping section 7 form an included angle of 90 degrees. The structure is convenient for the installation of the PCBA board and the use of the elastic structure; the mounting section 6 is provided with a plurality of mounting holes 8, the shell 1 is internally provided with a plurality of mounting upright posts 9, and the movable elastic pieces are connected on the mounting upright posts by bolts penetrating through the mounting holes. The mounting upright post structure is convenient for equal-height mounting and fixing of the three movable elastic sheets; the clamping section is provided with a protrusion 10.

The elastic structure has the following characteristics that (1) the elastic structural part is annular, and the circumference of the elastic structural part is smaller than that of the envelope surface of the movable device in the horizontal direction in a natural state; (2) the elasticity of the elastic structural part is greater than the overturning force of the movable device; the tensile force of the elastic structural part can enable the movable device to turn over a certain angle theta in the moving direction by taking the shell point location column as a rotation center to approach the center to reach the extreme point.

The elastic structure has the following requirements that (1) after the PCBA is installed, the elastic structure is left in the shell and cannot generate a conductive action to cause short circuit of an electronic device; (2) the elastic structural member meets the flame retardant rating UL 94V-0; after the PCBA is installed, the elastic structural part is left in the shell, and the electronic device cannot be damaged due to combustion.

Installation process:

firstly, the elastic structural member is sleeved on the pre-fixed movable spring piece of the shell, so that the movable spring piece is close to the center, and a reserved space is reserved for downward installation of the PCBA, and the PCBA can be smoothly installed.

The elastic structural member has good telescopic ductility, can be repeatedly used for many times, and well meets the requirement of multiple times of disassembly and assembly of PCBA debugging.

Through the taut fixed of elastic structure spare, compare in traditional manual, rock the regulation shell fragment position, can reduce PCBA's installation time, reduce the installation and interfere, realize the convenience. The elastic structural member is in a temperature-resistant flame-retardant insulation design, and the PCBA can be left in the shell without being taken out after being installed, so that the installation rapidity is improved;

specific example 2:

the embodiment is that the concrete structure of mounting has been add on concrete embodiment 1, including mounting bracket one 11, mounting bracket two 12, a plurality of soldering tin 13, set up soldering tin 14 on soldering tin 13, soldering tin sets up on mounting bracket two 12, and the second mounting bracket of stretching out of soldering tin is connected with mounting bracket one, and mounting bracket one is installed on PCBA board. The structure can realize the matching installation of the PCBA board and the installation shell (namely the shell) through the fixing piece; a plurality of through holes are formed in the first mounting frame, and a plurality of bosses avoiding the through holes are arranged on one end face of the first mounting frame.

Specific example 3:

the embodiment is that a specific structure of a first mounting frame 11 is additionally arranged on the basis of a specific embodiment 2, two buckles 15 are arranged on the first mounting frame 11, each buckle comprises a column section 24, a through open slot 16 is formed in the column section, the end of the column section is divided into two branched sections 17, and a semi-conical head 18 is arranged on each branched section. The radius of the bottom of the semi-conical head is larger than the radius of the column body section, so that after the buckle is inserted into the mounting hole in the PCBA board, the clamping is realized, and the first mounting bracket is fixed with the PCBA board.

Specific example 3:

this embodiment has add the concrete structure of two mounting brackets 12 on concrete embodiment 2's basis, is equipped with a plurality of mounting grooves 19 on two 12 inner walls of mounting bracket, is equipped with hollow out construction's preforming 20 in the mounting groove diapire, and the soldering piece sets up in the mounting groove, and the mounting groove opening part is provided with guard flap 21, and guard flap and mounting bracket sub-assembly set up between shell inner wall and activity shell fragment, preforming 20 and 7 butts of chucking section. The structure is convenient for the clamping and matching of the fixing piece and the movable elastic sheet. The preforming 20 is equipped with spacing post, is equipped with the spacing hole that link up on the soldering tin spare, and when the soldering tin spare was installed in the mounting groove, spacing post and spacing hole alternate the cooperation.

Specific example 4:

in this embodiment, a plurality of support pillars 22 are additionally provided on the basis of embodiment 1, a first support pillar is provided on the bottom wall of the cavity of the housing, reinforcing ribs are provided on the first support pillar and the bottom wall support in the housing, and a second support pillar is provided on the wall body of the housing. Be equipped with the internal thread in the support column end wall, when the PCBA board was installed on the shell, carry out the screw and can realize that the support of PCBA board is fixed with the support column cooperation.

The above-described embodiments are intended to be illustrative, and not restrictive, and other modifications and variations may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a prevent interfering structure of preventing that back-off PCBA installation is interfered, is including the shell that is used for the installation of PCBA board back-off, and characterized by is close to and is provided with a plurality of movable shell fragments in shell inner wall position department, installs elastic construction between the movable shell fragment, and elastic construction can make movable shell fragment draw close to the center, is provided with a plurality of mountings on the PCBA board, through mounting and the cooperation of movable shell fragment chucking on the PCBA board, makes the PCBA board realize the back-off and install on the shell.

2. The interference preventing structure of claim 1, wherein the resilient structure is an insulator and has a good expansion and contraction ductility.

3. The interference preventing structure of claim 1, wherein the movable spring comprises a mounting section and a clamping section, and the mounting section and the clamping section form an included angle of 90 °.

4. The interference preventing structure of claim 3, wherein the mounting section has a plurality of mounting holes, the housing has a plurality of mounting posts, and the movable resilient member is connected to the mounting posts by bolts passing through the mounting holes.

5. The interference preventing structure of claim 3, wherein the locking portion has a protrusion.

6. The anti-interference structure for preventing the back-off PCBA from installation interference according to any one of claims 1 to 5, is characterized in that the fixing member comprises a first mounting frame, a second mounting frame, a plurality of soldering tin pieces and soldering tin bars arranged on the soldering tin pieces, the soldering tin pieces are arranged on the second mounting frame, the second mounting frame extending out of the soldering tin bars is connected with the first mounting frame, and the first mounting frame is arranged on the PCBA board.

7. The anti-interference structure of claim 6, wherein the first mounting bracket has a plurality of fasteners, the fasteners include a cylindrical body, an open slot is formed in the cylindrical body to divide the end of the cylindrical body into two branched sections, and the branched sections have semi-conical heads.

8. The anti-interference structure for preventing installation interference of the reverse-buckled PCBA as recited in claim 6, wherein a plurality of mounting grooves are formed on the inner walls of the mounting brackets, press plates with hollow structures are arranged in the bottom walls of the mounting grooves, the soldering element is arranged in the mounting grooves, the opening of the mounting grooves is provided with the protective baffle, the protective baffle box and the mounting bracket assembly is arranged between the inner wall of the shell and the movable elastic sheet, and the press plates are abutted against the clamping sections.

9. The anti-interference structure of claim 8, wherein the press plate has a position-limiting post, the solder member has a position-limiting hole therethrough, and the position-limiting post is inserted into the position-limiting hole when the solder member is mounted in the mounting groove.

10. An interference prevention structure for preventing installation interference of a flip-chip PCBA as claimed in claim 1, 2, 3, 4, 5, 7, 8 or 9, wherein the housing is provided with a plurality of support posts.