CN201141800Y

CN201141800Y - Air-tightness testing device

Info

Publication number: CN201141800Y
Application number: CNU2007201944631U
Authority: CN
Inventors: 徐永铭
Original assignee: SmartAnt Telecom Co Ltd
Current assignee: SmartAnt Telecom Co Ltd
Priority date: 2007-12-07
Filing date: 2007-12-07
Publication date: 2008-10-29
Anticipated expiration: 2017-12-07

Abstract

The utility model discloses an air tightness test device for checking the air tightness of test position of to-be-tested object, which comprises a base, a leakage test tube, a mover and a detector, the leakage test tube is connected with a pressure source through gas pipeline, so that the pressure source can output pressure into the leakage test tube, when the leakage test tube is covered at the test position of the to-be-tested object, the mover is pressed and held at the outer edge of the leakage test tube, so that one end of the leakage test tube is jointed on the surface of the to-be-tested object and also the detector can sense pressure status of the leakage test tube, accordingly the tester can know the air tightness of the to-be-tested object according to the output information of the detector, and strengthen the structure of the to-be-tested object by the information.

Description

Airtight pick-up unit

Technical field

The utility model relates to a kind of airtight pick-up unit, particularly relates to a kind of pick-up unit that can carry out airtight detection at the single position of measured object.

Background technology

Electronic product is personal digital assistant (Personal Digital Assistant), global positioning satellite guider (GPS Navigator), mobile phone (Cell Phone) and external antenna (OutdoorAntenna) etc. for example, can along with the user under rugged surroundings, or under unsettled outdoor environment, be operated.In these environment, dust and moisture tend to electronic product is damaged, and therefore, electronic product correspondingly must have preferable dustproof and waterproof effect, so that it is when using under these environment, it is inner and electronic component is damaged that dust or moisture can not invaded electronic product.

Yet when making electronic product,, perhaps produce the gap between the pin of electronic component and its body, so that lose drip-preventing function because technological factor often makes that cover surface leaves hole.Because formed hole of electronic component or gap are very trickle, naked eyes are difficult to discover, for Machinery Design or quality control officer, if this is verified thoroughly one by one certainly will spend a large amount of time and energy, the utmost point does not meet economic benefits.Therefore; can weigh the security of electronic component by safety standard; the international norm of formulating by International Electrotechnical Commission (International Electrotechnical Commission) (IEC standard) for example; and in the European integration standard of being formulated by the European Committee for Standardization (CEN) and the European electrical standard council (CENELEC) (EN standard); the method of testing dustproof and water resistance that is had at the machine upkeep structure has explicit stipulation; with IP67 is example; wherein; first mark " 6 " that IP represents refers to complete dust tight construction; its corresponding test condition is that any dust must not be invaded; and second mark " 7 " that IP represents refers to and can with good conditionsily be used under water; its corresponding test condition immersed 30 minutes for 1 meter for the degree of depth under water, and product must not disabler.

The manufacturer is delivering product when verifying the dealer, and the checking dealer can according to above-mentioned IEC standard and the EN standard prevent dust and the water resistance detection.But the manufacturer only can learn whether the testing result of product is passed through, and can't learn further that product is in situation that testing process occurred.

Have again, when measured object is subjected to airtight detection, measured object is dropped in the test trough of tester table, and test trough is vacuumized test with vacuum pump, so as to the drip-preventing function of measured object in the discrimination test groove, the keyboard leakproof proving installation that is disclosed for number No. 481272 patent case of Republic of China's patent announcement for example.Yet, case is in order to detect the drip-preventing function of whole measured object before above-mentioned, when the QC personnel only will when for example detecting for the position between electronic component pin in the measured object and its body, just can't detect by known tester table at the single position of measured object.

Summary of the invention

The purpose of this utility model is to provide a kind of airtight pick-up unit, can observe the testing process of measured object, and can detect at the single position of measured object, solve in the known technology, the manufacturer can't learn the situation that the product testing process is taken place, thereby information is done research and development further and is improved in view of the above, and known technology is in order to detect the drip-preventing function of whole measured object, if will detect, just can't problem such as reach by known tester table at the single position of measured object.

To achieve these goals, the utility model provides a kind of airtight pick-up unit, and in order to detect the test position impermeability of a measured object, it comprises pedestal, the pipe that leaks hunting, mobilizer and detecting device.Wherein, measured object is positioned over pedestal, is overlying on the test position with tested fistulae cover.The pipe that leaks hunting has room and opening, and room links gas piping, and gas piping links the pressure source of exportable pressure in room.Mobilizer is located at pedestal, in order to pressure holding in the pipe outer rim of leaking hunting, so that room is engaged in the surface of measured object.Detecting device is connected in leak hunting pipe and pressure source with gas piping, in order to detect the pressure state in the room.

According to the disclosed thin display structure of the utility model, the tester directly inspects the ability to bear of measured object in airtight testing process, so that the tester analyzes or adjusts detected state, compare in the known technology and only can learn testing result indirectly, the utility model can be convenient to the tester and grasp whole testing process in response to the detection demand, obtains more direct, detailed detection information simultaneously.And the pipe that leaks hunting adopts the hand-held design, for the tester,, can select the test position of measured object if will detect at the single position of measured object the time, and the shroud that directly will leak hunting is overlying on this, the for example pin of measured object and the joint place between body are to carry out airtight detection, therefore, the tester can be in response to the detection demand, and the position of covering is covered by leak hunting pipe institute of conversion, makes the utility model have higher flexibility of operation in application, and is also quite easy in the operation.

Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.

Description of drawings

Fig. 1 is the stereo appearance figure of the utility model embodiment;

Fig. 2 is the external antenna of the utility model embodiment when tested, mobilizer as yet not pressure holding in the constitutional diagram of the pipe that leaks hunting;

Fig. 3 is the external antenna of the utility model embodiment when tested, and the mobilizer pressure holding is in the constitutional diagram of the pipe that leaks hunting;

Fig. 4 just is being pressed on room for the pressure source output of the utility model embodiment, to carry out the airtight detection synoptic diagram of external antenna;

Fig. 5 detects underproof constitutional diagram for the external antenna tight function of the utility model embodiment.

Wherein, Reference numeral:

300 airtight pick-up units

310 pedestals

312 frameworks

314 microscope carriers

320 pipes that leak hunting

321 openings

322 rooms

324 packing rings

330 mobilizers

332 actuated pieces

334 connecting rods

336 pressing blocks

340 detecting devices

500 external antennas

510 bodies

520 signal pins

600,600A gas piping

700 pressure sources

720 pressure generators

740 by-pass valve controls

Embodiment

According to the airtight pick-up unit that the utility model disclosed, in order to detect a measured object air-tightness, wherein, measured object is electronic products such as external antenna, personal digital assistant, global positioning satellite guider and mobile phone, but do not exceed with above-mentioned electronic product, all can use the technology that the utility model discloses such as the product that meets dustproof and water resistance grade IP67, in following specific embodiment of the utility model, measured object will be used as Application Example with external antenna.

Please refer to Fig. 1, Fig. 2 and Fig. 4, airtight pick-up unit 300 is according to IP67 normalized definition made, but also can make according to the specification of customer demand, and at this, airtight pick-up unit 300 is with made as application examples according to the IP67 normalized definition.External antenna 500 includes body 510 and several signal pins 520, because in manufacturing process, when being incorporated into body 510, signal pin 520 can produce tolerance issues, make the signal pin 520 and the joint place of body 510 form the gap, product quality in order to ensure external antenna 500, therefore, airtight pick-up unit 300 can detect its impermeability with body 510 joint place at for example signal pin 520, but test position is not as limit.

Airtight pick-up unit 300 includes pedestal 310, pipe 320, mobilizer 330 and detecting device 340 leak hunting, wherein, pedestal 310 includes framework 312 and several are located at the microscope carrier 314 of framework 312, microscope carrier 314 is in order to carrying external antenna 500 and detecting device 340, so that carry out detecting operation and observe the detection data.

The pipe 320 that leaks hunting is made for withstand voltage material, and the one end is the open end, thereby has opening 321, and the other end then is a blind end.The pipe 320 that leaks hunting also has room 322, room 322 links gas piping 600, and gas piping 600 links the pressure source 700 of exportable pressure in room 322, the demand of looking the tester, these pressure source 700 exportable pressure are so that room 322 internal pressures reach the required predetermined pressure of tester.This pressure source 700 can include pressure generator 720 and by-pass valve control 740 etc., pressure generator 720 is connected in by-pass valve control 740 with gas piping 600, by-pass valve control 740 is linked to the room 322 of the pipe 320 that leaks hunting again by gas piping 600, so as to forming a gas passage.And the unlatching of by-pass valve control 740 or close can determine whether gas can circulate.When pressure generator 720 was failed pressure, by-pass valve control 740 was opened, and gas can freely be passed through, and enter room 322.And when pressure generator 720 was closed, this moment, by-pass valve control 740 be a closed condition, with cut-out pressure generator 720 and room 322 inside the gas interlock, to avoid influencing the pressure test result of external antenna 500.

In addition, pressure generator 720 for example is a supercharge pump, import the room 322 of gas in the pipe 320 that leaks hunting to produce malleation, but pressure generator 720 can for example be a vacuum pump also not as limit, extracts the room gas inside in order to produce negative pressure.At this, pressure source 700 is the utility model application examples with the output malleation.Have again, pipe 320 and be provided with packing ring 324 leaks hunting, in order to external antenna 500 surperficial driving fits, make in the process that detects external antenna 500, pipe 320 the room 322 that leaks hunting is an enclosure space, can not produce extraneous gas and enter gas loss in room 322 or the room 322 to situations such as the external worlds, to carry out the tested operation of external antenna 500 smoothly.

Mobilizer 330 is managed 320 position corresponding to leaking hunting and is located at pedestal 310, it includes actuated piece 332, connecting rod 334 and pressing block 336, wherein, actuated piece 332 is located on the framework 312 of pedestal 310, and the two ends of connecting rod 334 are linked to actuated piece 332 and pressing block 336 respectively, exportable power in the actuated piece 332 in order to mobile pressing block 336, make pressing block 336 along the axial direction of the pipe 320 that leaks hunting and move up and down.At this, actuated piece 332 of the present utility model is an application examples to be positioned at pedestal 310 tops, but not as limit.

Detecting device 340 is located at a wherein microscope carrier 314 of pedestal 310, and with gas piping 600A be connected in leak hunting the pipe 320, to be communicated to room 320 by gas piping 600, like this, when external antenna 500 was positioned at room 320 acceptance detections, detecting device 340 can be in order to detect the pressure state in the room 320.In addition, detecting device 340 also includes control module, it can be according to the air-tightness requirement of external antenna 500, the pressure of setting a rate of pressure change changes threshold value, when the time dependent speed of pressure changes threshold value less than pressure, represent the sealing of external antenna 500 can satisfy the demand of IP67 standard, the successful consequential signal of the exportable test of control module this moment.When pressure changes threshold value greater than pressure over time, represent the sealing of external antenna 500 not meet airtight demand, the consequential signal of the exportable test crash of control module again.

Please refer to Fig. 2, Fig. 3 and Fig. 4, when the actual air-tightness that carries out external antenna 500 detects, earlier external antenna 500 is placed on the wherein microscope carrier 314 of pedestal 310, and pipe 320 covers that will leak hunting are overlying on the test position of external antenna 500, the joint place of signal pin 520 and body 510 for example, to be contained in the room 320, simultaneously, the other end of the pipe 320 that leaks hunting is corresponding to the pressing block 336 of mobilizer 330.Then, the tester operates actuated piece 332 makes pressing block 336 move along the axial direction of the pipe 320 that leaks hunting, and in pipe 320 other ends that leak hunting, makes opening 321 fluid-tight engagement in body 510 surfaces of external antenna 500 with pressure holding, room 322 and be an enclosure space.

Then starting pressure source 700 makes by-pass valve control 740 be unlocked, and pressure generator 720 can just be pressed on the room 322 of the pipe 320 that leaks hunting via gas piping 600 outputs.Just according to the pressure state in this moment room 322, signal reaches output interface to detecting device 340 in will test, exports and with the information notification tester with instrument or literal.If the air that the joint place of signal pin 520 and body 510 can intercept in the room 322 enters, meaning is promptly represented signal pin 520 and body 510 joint place and seamless or fissure cavity generation, and its impermeability is normal.

Please refer to Fig. 4 and Fig. 5, when if defective situation detect to take place in impermeability, promptly when pressure generator 720 just is being pressed on the room 322 of the pipe 320 that leaks hunting via gas piping 600 outputs, signal pin 520 has the slit with body 510 joint place, no matter the scope in slit have how little, all can make originally be stored in air in the room 322 by the slit loss in outside.(if output negative pressure in room 322 so that when presenting vacuum state in the room 322, outside air then can arrive in the room 322 by the slit).Since this moment pressure generator 720 input to the air of room 322 will be from the slit loss, detecting device 340 will detect the pressure state in the room 322, and the consequential signal that will detect failure is exported demonstration by output interface, to inform the tester, the tester just can be according to the structure of this information with further analysis and reinforcement external antenna 500.

In addition, can determine by two kinds of modes the opportunity that pressure source 700 decommissions: one is set the time value of bleeding, this time value of bleeding is set in control module, arrive when being worth this input time when the time of pressure generator input malleation, promptly come closing presure generator 720 by control module, and with the gas communication between by-pass valve control 740 cut-out pressure generators 720 and the room 322, detecting device 340 also begins to detect room 322 pressure inside over time.Also can set a test pressure value, that is continue to detect room 322 pressure inside, when the pressure variation is positioned at the test pressure interval, promptly stops to import malleation and detect room 322 pressure inside over time by detecting device 340.

Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims

1, a kind of airtight pick-up unit in order to detect the test position impermeability of a measured object, is characterized in that, comprising:

One pedestal is put this measured object;

One pipe that leaks hunting has a room and an opening, and this room links a gas piping, and this gas piping links the pressure source of an output pressure in this room, and this opening cover is overlying on the test position of this measured object;

One pressure holding so that this room is engaged in the mobilizer on this measured object surface, is located at this pedestal in this pipe outer rim of leaking hunting; And

One is connected in this pipe that leaks hunting with a gas piping, is communicated to this room by this gas piping, to detect the detecting device of the pressure state in this room, is located at this pedestal.

2, airtight pick-up unit according to claim 1 is characterized in that, this pedestal includes a framework and several are located at the microscope carrier of this framework, and this microscope carrier carries this measured object and this detecting device.

3, airtight pick-up unit according to claim 2, it is characterized in that, this mobilizer includes an actuated piece, a connecting rod and a pressing block, this exportable power is to move this pressing block, so that this pressing block along the axial direction of this pipe that leaks hunting and the actuated piece that moves up and down be located on this framework, and the two ends of this connecting rod are linked to this actuated piece and this pressing block respectively.

4, airtight pick-up unit according to claim 1 is characterized in that, this pressure source includes the pressure generator of an output pressure in this room.

5, airtight pick-up unit according to claim 4, it is characterized in that, this pressure source includes one when this pressure generator decommissions, and closes the by-pass valve control of the gas communication between the generation of this room and this pressure, and this by-pass valve control is arranged at this pressure generator and this leaks hunting between the pipe.

6, airtight pick-up unit according to claim 1 is characterized in that, this pipe that leaks hunting be provided with one in order to the packing ring of the surperficial driving fit of this measured object.