CN218566816U

CN218566816U - Air permeability detection table for waterproof breathable film of automobile controller ECU

Info

Publication number: CN218566816U
Application number: CN202222771317.8U
Authority: CN
Inventors: 于树怀
Original assignee: Liuzhou Aoyix Auto Electronics Co ltd
Current assignee: Jiangsu Aoyikesi Automotive Electronic Technology Co ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-03
Anticipated expiration: 2032-10-20

Abstract

The utility model discloses a platform is examined to ventilative volume of waterproof ventilated membrane of automobile controller ECU, including the installation frame, the inside below fixed mounting of installation frame has bottom machine case, the inside top fixed mounting of installation frame has top machine case, front end one side fixed mounting of top machine case has leak tester and human-computer interface, and leak tester is located human-computer interface's top. A ventilative volume of waterproof ventilated membrane of automobile controller ECU examines test table, compare motor drive displacement device, cylinder drive displacement device shortens at two station circulations occupation time, and the translation rate is high, has saved the time, has improved production efficiency, examine test table design stop device, avoided the mistake that the part was placed to the staff, avoided leading to the test failure because of the dislocation, reduced the time of doing over again, improved production efficiency, the testing result gets into the MES system, make the station quality obtain control, product quality has been ensured.

Description

Air permeability detection table for waterproof breathable film of automobile controller ECU

Technical Field

The utility model relates to an automotive electronics field, in particular to waterproof ventilated membrane's of automobile controller ECU ventilative volume test table.

Background

An automobile controller (ECU) mainly comprises an upper shell, a lower shell, a PCBA board, an insulating gasket, a waterproof breathable film, heat dissipation glue, sealant, fastening screws and other parts, wherein the ECU is generally arranged in an engine compartment and needs good sealing performance, so the ECU is theoretically required to be strictly sealed after being assembled, but the PCBA board which is the main part of the ECU is composed of a large number of electronic components, the electronic components can generate heat during working, the heat can generate high temperature and gas, the high temperature is transmitted to the shell through the heat dissipation glue and is dissipated out through the shell, the gas is accumulated more, the pressure in the shell can be increased, if the PCBA board cannot be balanced with the external atmosphere, the pressure in the shell can be large, and parts can be damaged, therefore, an air vent with the diameter of 2.5mm is generally arranged on the ECU shell, the air tightness of the ECU can be reduced due to the existence of the air vent for ventilating with the atmosphere, water can easily enter into the shell, and the electronic components can be damaged.

In order to achieve the purpose that the ECU can meet the requirements of tightness, water resistance and dust prevention and can ventilate with the atmosphere, a waterproof breathable film needs to be pasted on the air holes on the shell, the waterproof breathable film is an important part in an automobile controller (ECU), and the main functions of the waterproof breathable film are two: one is waterproof and the other is breathable, therefore, an ePTFE fabric which is waterproof and breathable is selected as a material of the waterproof breathable film, and the ePTFE is formed by laminating a microporous film with a common fabric through a special process. The fabric has excellent waterproof and vapor-permeable performances, so that vapor can quickly permeate out of the fabric, and the fabric is a better waterproof and breathable material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a waterproof ventilated membrane of vehicle control unit ECU's ventilative volume examines test table can effectively solve the technical problem that the background art provided.

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

the utility model provides an air permeability detection table of waterproof ventilated membrane of automobile controller ECU, includes the installation frame, the inside below fixed mounting of installation frame has bottom quick-witted case, the inside top fixed mounting of installation frame has top quick-witted case, front end one side fixed mounting of top machine case has leak tester and human-computer interface, and leak tester is located the top of human-computer interface, the front end opposite side fixed mounting of top machine case has test screen, movable mounting has a plurality of panel control button in the middle of the front end of top machine case, the inside of installation frame is located the below movable mounting of top machine case and has compressing cylinder and test cylinder, and compresses tightly the cylinder and be located one side of test cylinder, the lower extreme fixed mounting of compressing cylinder has the pressure plunger, test cylinder's lower extreme fixed mounting has the shutoff pressure head, the inside one side fixed mounting of installation frame has fixed scanner, the inside opposite side fixed mounting of installation frame has photoelectric switch, the inside of installation frame is located the top movable mounting of bottom machine case has the displacement cylinder, the upper end fixed mounting of displacement cylinder has lower casing fixed frock, the upper end fixed mounting of lower casing has the casing, the front end movable mounting of installation frame has start button and emergency stop button, and one side of start button is located emergency stop button.

As a further aspect of the utility model, compress tightly the flexible activity in inside that cylinder and test cylinder inserted to top machine case, the shutoff pressure head all is located the top of casing down with compressing tightly the plunger.

As a further scheme of the utility model, the fixed frock of casing is about the activity under the displacement cylinder drive, and the fixed frock of casing is located fixed scanner and photoelectric switch's centre down.

As a further scheme of the utility model, the inside fixed mounting of shutoff pressure head has discharge valve, the inside of shutoff pressure head is located discharge valve's below and has seted up sealed cavity, and the inboard of lower casing is equipped with waterproof ventilated membrane.

As a further proposal of the utility model, the precise laminating between the sealed cavity and the waterproof ventilated membrane, the exhaust valve is positioned above the waterproof ventilated membrane.

As a further proposal of the utility model, the inside of the lower shell is provided with a gas film hole which is positioned below the waterproof breathable film.

As a further aspect of the utility model, the leak tester comprises admission valve, other valve, protection valve, flow sensor and the pressure sensor of filling, and the output and the shutoff pressure head of leak tester are connected.

Compared with the prior art, the utility model discloses following beneficial effect has: through the leak testing appearance that sets up, the test cylinder, the shutoff pressure head, the fixed frock of casing down, compress tightly the cylinder, compress tightly the plunger, lower casing, discharge valve, sealed cavity, waterproof ventilated membrane, compare motor drive displacement device, cylinder drive displacement device shortens at two station circulations occupation time, the translation rate is high, the time is saved, the production efficiency is improved, examine test table design stop device, the mistake of placing the part has been avoided to the staff, avoided leading to the test failure because of the dislocation, the rework time has been reduced, the production efficiency is improved, the testing result gets into the MES system, make the station quality obtain control, product quality has been ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of a ventilation testing table of a waterproof and breathable film of an ECU of an automobile controller;

FIG. 2 is a pressing-down diagram of a pressing cylinder in an air permeability detection table of a waterproof air permeable membrane of an automobile controller ECU;

FIG. 3 is a pressing diagram of a testing cylinder in an air permeability detection table of a waterproof breathable film of an automobile controller ECU of the utility model;

FIG. 4 is an analysis diagram of a blocking pressure head and a lower shell in an air permeability detection table of a waterproof breathable film of an automobile controller ECU;

FIG. 5 is an enlarged view of a lower shell in an air permeability detection table of a waterproof air permeable membrane of an automobile controller ECU;

FIG. 6 is a schematic view of the testing principle of the leak tester of the air permeability testing table of the waterproof breathable film of the ECU of the automobile controller;

fig. 7 is the utility model relates to a leak testing appearance test principle flow chart of the ventilative volume test table of waterproof ventilated membrane of automobile controller ECU.

In the figure: 1. a leak tester; 2. a human-machine interface; 3. testing the cylinder; 4. a photoelectric switch; 5. an emergency stop button; 6. plugging a pressure head; 7. a lower shell fixing tool; 8. a panel control button; 9. testing a screen; 10. a pressing cylinder; 11. a stationary scanner; 12. compressing the plunger; 13. a lower housing; 14. a displacement cylinder; 15. a start button; 20. an exhaust valve; 21. sealing the cavity; 22. a waterproof breathable film; 30. A bottom chassis; 31. a mounting frame; 32. a top chassis.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-7, an air permeability detection table for a waterproof and breathable film of an automobile controller ECU comprises an installation frame 31, a bottom case 30 is fixedly installed below the inside of the installation frame 31, a top case 32 is fixedly installed above the inside of the installation frame 31, a leak tester 1 and a human-computer interface 2 are fixedly installed on one side of the front end of the top case 32, the leak tester 1 is located above the human-computer interface 2, a test screen 9 is fixedly installed on the other side of the front end of the top case 32, a plurality of panel control buttons 8 are movably installed in the middle of the front end of the top case 32, a compression cylinder 10 and a test cylinder 3 are movably installed below the top case 32 inside the installation frame 31, and compressing cylinder 10 is located one side of test cylinder 3, the lower extreme fixed mounting of compressing cylinder 10 has compressing plunger 12, the lower extreme fixed mounting of test cylinder 3 has shutoff pressure head 6, inside one side fixed mounting of installation frame 31 has fixed scanner 11, the inside opposite side fixed mounting of installation frame 31 has photoelectric switch 4, the inside top that is located bottom machine case 30 of installation frame 31 has displacement cylinder 14 of movable mounting, the upper end fixed mounting of displacement cylinder 14 has lower casing fixed frock 7, the upper end fixed mounting of lower casing fixed frock 7 has lower casing 13, the front end movable mounting of installation frame 31 has start button 15 and emergency stop button 5, and start button 15 is located one side of emergency stop button 5.

In this embodiment, the pressing cylinder 10 and the testing cylinder 3 are inserted into the top chassis 32 for telescopic movement, the plugging pressure head 6 and the pressing plunger 12 are both located above the lower shell 13, and the pressing cylinder 10 and the testing cylinder 3 respectively drive the plugging pressure head 6 and the pressing plunger 12 to move up and down above the lower shell 13.

In this embodiment, the fixed frock 7 of casing is about the activity under the drive of displacement cylinder 14, and the fixed frock 7 of casing is located fixed scanner 11 and photoelectric switch 4's centre down, and the fixed frock 7 of casing drives down casing 13 and removes the switching station down.

In this embodiment, an exhaust valve 20 is fixedly installed inside the plugging pressure head 6, a sealing cavity 21 is formed in the plugging pressure head 6 and located below the exhaust valve 20, a waterproof breathable film 22 is arranged on the inner side of the lower shell 13, in order to ensure the sealing performance of the plugging cavity, the plugging pressure head 6 is an elastic polyurethane sealing ring, the sealing with the lower shell 13 is in a surface sealing mode, the sealing ring is deformed by the pressing force of the testing cylinder 3, a sealing surface is formed around the waterproof breathable film hole 22, the sealing performance of the sealing surface is ensured, and the testing gas is prevented from leaking from the sealing plug.

In this embodiment, the sealed cavity 21 and the waterproof breathable film 22 are closely attached, and the exhaust valve 20 is located above the waterproof breathable film 22.

In this embodiment, the air film hole has been seted up to casing 13's inside down, the air film hole is located waterproof ventilated membrane 22's below, because four mounting holes of casing 13 are symmetrical arrangement down, and the position of air film hole is not at the central point of part puts, if detect the platform and do not have the mistake proofing function, though can put the locating pin on the frock, but can not match waterproof ventilated membrane 22's inspection hole, can't detect, at this moment need place the part again, delay the production time, therefore, according to the shape design frock of the protruding square piece of appearance bleeder vent of casing 13 down, a stopper and a recess that pairs have been set up on casing fixed frock 7 down, casing 13 can't place in the opposite direction down, reach the purpose of mistake proofing, the emergence of the workman place the wrong problem of part has been avoided.

In this embodiment, the leak tester 1 is composed of an air inlet valve, a bypass charging valve, a protection valve, a flow sensor and a pressure sensor, and the output end of the leak tester 1 is connected with the plugging pressure head 6.

What need explain, the utility model relates to a platform is examined to ventilative volume of waterproof ventilated membrane of automobile controller ECU, when using, it is first station to compress tightly cylinder 10 and compress tightly plunger 12, it drives to compress tightly plunger 12 and pushes down and carry out waterproof ventilated membrane 22 and compress tightly to compress tightly cylinder 10, guarantee that it pastes firmly, test cylinder 3 and shutoff pressure head 6 are second station, test cylinder 3 drives shutoff pressure head 6 and pushes down, carry out ventilative volume test, leak testing adopts 6 shutoff waterproof ventilated membrane 22 of shutoff pressure head around, make it form a sealed cavity 21, then aerify back pressurize to its inside, detect the air input of pressurize in-process and assess the leakage volume of ventilated membrane, according to technical requirement: the inflation pressure is 7 +/-2.5 kpa, the microleakage value is qualified within the range of 1000 +/-500 ml/min, otherwise, the microleakage value is unqualified, the tooling is driven by a displacement cylinder 14 to move in the circulation of the two stations, the tooling after the compaction station is completed is circulated to an air permeability testing station, a lower shell 13 of a part to be tested is fixed on a lower shell fixing tooling 7 and reaches the testing station along with the movement of the lower shell fixing tooling 7, a motor drives a screw to drive the lower shell fixing tooling 7 to move in a general conventional driving mode, and the movement time of the screw is long, so that the scheme that the pneumatic driving cylinder drives the tooling to move is selected, and through a comparison test, the movement time of the pneumatic driving scheme is reduced by 14s compared with that of the conventional motor driving screw scheme.

The specific test principle steps are as follows:

the first step is as follows: inflating through the leakage tester 1 to enable the air inlet valve to be opened, the protection valve to be closed, the side charging valve to be opened, the exhaust valve 20 to be closed, and compressed air to flow into a sealed cavity 21 formed by the waterproof breathable film 22 and the plugging pressure head 6;

the second step is that: balancing and maintaining pressure, wherein an air inlet valve of the leakage tester 1 is opened, a side charging valve is closed, a protective valve is opened, an exhaust valve 20 is closed, and compressed air is maintained in a sealed cavity 21;

the third step: the pressurize test, leak tester 1 inlet valve is opened, and other valve of filling is closed, and the protective valve is opened, and discharge valve 20 closes, tests waterproof ventilated membrane 22's leakage quantity: if the waterproof breathable film 22 leaks ml of air in the air path system, the air inlet valve supplements the ml of air, the control system controls the opening rate of the air inlet valve by detecting the flow fed back by the flow sensor, the air inlet valve is opened in the test process of the product, the pressure inside the product is reduced and the volume is supplemented immediately, and the test system evaluates the leakage rate of the breathable film by monitoring the flow fed back by the flow sensor, so that the leakage rate of the breathable film is detected;

the fourth step: and (4) deflating, wherein after detection is finished, an air inlet valve of the leakage tester 1 is closed, a side charging valve is closed, a protection valve is closed, and an exhaust valve 20 is opened.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a platform is examined to ventilative volume of waterproof ventilated membrane of automobile controller ECU which characterized in that: the device comprises an installation frame (31), a bottom case (30) is fixedly installed below the inside of the installation frame (31), a top case (32) is fixedly installed above the inside of the installation frame (31), a leakage tester (1) and a human-computer interface (2) are fixedly installed on one side of the front end of the top case (32), the leakage tester (1) is located above the human-computer interface (2), a test screen (9) is fixedly installed on the other side of the front end of the top case (32), a plurality of panel control buttons (8) are movably installed in the middle of the front end of the top case (32), a blocking pressure head (6) is fixedly installed at the lower end of the test cylinder (3), a fixed scanner (11) is fixedly installed on one side of the inside of the installation frame (31), a photoelectric switch (4) is fixedly installed on the inside of the installation frame (31), and a displacement is installed above the movable cylinder (14) of the other side of the installation frame (31), the utility model discloses a quick-witted emergency stop device, including displacement cylinder (14), the upper end fixed mounting of casing has lower casing fixed frock (7) of displacement cylinder (14), the upper end fixed mounting of casing fixed frock (7) has lower casing (13) down, the front end movable mounting of installation frame (31) has start button (15) and emergency stop button (5), and start button (15) are located one side of emergency stop button (5).

2. The air permeability detection table for the waterproof air-permeable film of the automobile controller ECU according to claim 1, characterized in that: the compaction air cylinder (10) and the test air cylinder (3) are inserted into the top chassis (32) to stretch and move, and the plugging pressure head (6) and the compaction plunger (12) are both positioned above the lower shell (13).

3. The air permeability detection table for the waterproof air-permeable film of the automobile controller ECU according to claim 1, characterized in that: the displacement cylinder (14) drives the lower shell fixing tool (7) to move left and right, and the lower shell fixing tool (7) is located between the fixed scanner (11) and the photoelectric switch (4).

4. The air permeability detection table for the waterproof air-permeable film of the automobile controller ECU according to claim 1, characterized in that: the inside fixed mounting of shutoff pressure head (6) has discharge valve (20), sealed cavity (21) have been seted up to the inside below that is located discharge valve (20) of shutoff pressure head (6), and the inboard of lower casing (13) is equipped with waterproof ventilated membrane (22).

5. The air permeability detection table for the waterproof air-permeable film of the automobile controller ECU according to claim 4, characterized in that: the sealed cavity (21) is precisely attached to the waterproof breathable film (22), and the exhaust valve (20) is located above the waterproof breathable film (22).

6. The air permeability detection table of the waterproof air-permeable film of the automobile controller ECU according to claim 4, characterized in that: and a gas film hole is formed in the lower shell (13), and is positioned below the waterproof breathable film (22).

7. The air permeability detection table for the waterproof air-permeable film of the automobile controller ECU according to claim 1, characterized in that: the leakage tester (1) is composed of an air inlet valve, a side charging valve, a protection valve, a flow sensor and a pressure sensor, and the output end of the leakage tester (1) is connected with the plugging pressure head (6).