CN214200525U - Air tightness testing device - Google Patents

Abstract

The utility model discloses an air tightness testing device aims at providing an air tightness testing device who easily detects and test effect is good. The utility model discloses a push down mechanism, mount pad, vacuum generator and gas leakage detector, set up the profile modeling spacing groove on the mount pad and with the vacuum suction nozzle that the profile modeling spacing groove is linked together, vacuum suction nozzle with vacuum generator cooperatees, gas leakage detector with the profile modeling spacing groove cooperatees. The utility model discloses be applied to gas tightness testing arrangement's technical field.

Description

Air tightness testing device

Technical Field

The utility model relates to an air tightness testing device.

Background

The flexible flat cable module with the microphone is widely used for 3C electronic products such as mobile phones and flat panels. The soft arranging wire module aligns the sound outlet hole of the microphone with the sound outlet hole of the soft arranging wire and then welds the microphone on the soft arranging wire. At the moment, the welding surface of the microphone needs to be sealed, otherwise, the electroacoustic performance and the service life are influenced. In the production process of electronic products, ensuring the quality of the electronic products is the central importance of the production process, and the quality of the electronic products directly influences the sales volume of the electronic products, so that the air tightness test of the microphone sound cavity is an essential part in the production.

As shown in fig. 1, the flexible flat cable module with the microphone includes a flexible flat cable a and a microphone b placed on the flexible flat cable a, wherein the sound outlet hole of the flexible flat cable is aligned with the sound outlet hole of the microphone, and further, a circle of the periphery of the microphone is completely welded on the flexible flat cable, so that the situations of insufficient welding and missing welding cannot occur, otherwise, the situation of air leakage occurs, and the microphone and the flexible flat cable form a sound cavity c after welding. At present, the testing of the audio cavity in the industry is mainly checked by manually listening to pure sound or by a destructive water injection experimental method. The manual detection has low identification degree, is greatly influenced by the main observation and has poor reliability. The water injection test causes irreversible damage to the product and cannot be used in full-scale detection schemes. How to more conveniently detect the air tightness of the microphone sound cavity becomes a problem to be solved urgently by those skilled in the art at present. Therefore, there is a need to develop an air tightness testing device that is easy to detect and has good testing effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide an easily detect and the good gas tightness testing arrangement of test effect.

The utility model adopts the technical proposal that: the utility model discloses a push down mechanism, mount pad, vacuum generator and gas leakage detector, set up the profile modeling spacing groove on the mount pad and with the vacuum suction nozzle that the profile modeling spacing groove is linked together, vacuum suction nozzle with vacuum generator cooperatees, gas leakage detector with the profile modeling spacing groove cooperatees.

Further, the pushing mechanism comprises a fixing plate, a cylinder and a linear guide rail are arranged on the fixing plate, a pushing piece is matched on the linear guide rail in a sliding mode and driven by the cylinder to slide, and the pushing piece is located above the profiling limiting groove.

Further, the lower pressing piece comprises a lower pressing block, a through groove is formed in the lower pressing block, a pushing block is arranged in the through groove in a matched mode, an cover plate is arranged on the pushing block, a spring is arranged between the pushing block and the cover plate, a pressing head is arranged at the lower end of the pushing block, and the pressing head is located above the profiling limiting groove.

Further, the pressure head is a silica gel pressure head.

Furthermore, a buffer is arranged at the side end of the lower pressing block.

The utility model has the advantages that: compared with the defects of the prior art, in the utility model, during testing, the flexible flat cable module with the microphone is limited on the profiling limiting groove, the sound cavity of the flexible flat cable module is communicated with the profiling limiting groove, the flexible flat cable module is further pressed down by the pressing mechanism, the vacuum generator sucks air to the flexible flat cable module according to a set value, at the moment, the product is sucked by the vacuum suction nozzle, further, the pressing mechanism is reset and does not press the product, thereby avoiding the interference of the pressing mechanism on the test, after the pressing mechanism, the vacuum generator continuously keeps sucking the set value to the flexible flat cable module, the air leakage detector continuously detects the air pressure value and keeps a period of time, and the flexible flat cable module, the vacuum suction nozzle, the vacuum generator and the air leakage detector form a test inner cavity together, the pressure value of test inner chamber changes, can change according to the difference that detects the requirement, vacuum generator breathes in with the invariable value to the product, the change of inside atmospheric pressure is detected to the gas leakage detector, if atmospheric pressure variable quantity exceeds the invariable value scope, then judges the product gas leakage, consequently, the utility model discloses can effectively discern the airtight sound chamber soft arranging wire module of the bad microphone of gas tightness during the use to can be used to volume production line batch test, and can not produce adverse effect to the airtight sound chamber soft arranging wire module of microphone, have easily detect and the good advantage of test effect.

Drawings

Fig. 1 is a schematic perspective view of a flexible flat cable module;

fig. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic plan view of the mounting base;

FIG. 4 is a perspective view of the mounting base;

FIG. 5 is a schematic perspective view of the hold-down;

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

Detailed Description

As shown in fig. 1 to 6, in this embodiment, the utility model discloses a push down mechanism 1, mount pad 2, vacuum generator and gas leakage detector, set up profile modeling spacing groove 5 on mount pad 2 and with the vacuum suction nozzle 6 that profile modeling spacing groove 5 is linked together, vacuum suction nozzle 6 with vacuum generator cooperatees, gas leakage detector with profile modeling spacing groove 5 cooperatees. Compared with the defects of the prior art, in the utility model, during testing, the flexible flat cable module with the microphone is limited on the profiling limiting groove 5, the sound cavity of the flexible flat cable module is communicated with the profiling limiting groove 5, the flexible flat cable module is further pressed down by the pressing mechanism 1, the vacuum generator sucks the flexible flat cable module according to the set value, at the moment, the product is sucked by the vacuum suction nozzle 6, further, the pressing mechanism 1 is reset and does not press the product, so that the pressing mechanism 1 is prevented from interfering with the testing, after the pressing mechanism 1, the vacuum generator continuously sucks the flexible flat cable module with the set value, the air leakage detector continuously detects the air pressure value and maintains the air pressure value for a period of time, and the flexible flat cable module, the vacuum suction nozzle 6, the vacuum generator and the air leakage detector form a testing inner cavity together, the pressure value of test inner chamber changes, can change according to the difference that detects the requirement, vacuum generator breathes in with the invariable value to the product, the change of inside atmospheric pressure is detected to the gas leakage detector, if atmospheric pressure variable quantity exceeds the invariable value scope, then judges the product gas leakage, consequently, the utility model discloses can effectively discern the airtight sound chamber soft arranging wire module of the bad microphone of gas tightness during the use to can be used to volume production line batch test, and can not produce adverse effect to the airtight sound chamber soft arranging wire module of microphone, have easily detect and the good advantage of test effect.

In this embodiment, mechanism 1 pushes down includes fixed plate 7, be provided with cylinder 8 and linear guide 9 on the fixed plate 7, sliding fit has holding down 10 on linear guide 9, the cylinder 8 drive holding down 10 slides, holding down 10 is located the profile modeling spacing groove 5 top.

In this embodiment, the pressing member 10 includes a pressing block 11, a through groove 12 is formed in the pressing block 11, a pushing block 13 is disposed in the through groove 12 in a matching manner, a cover plate 14 is disposed on the pushing block 13, a spring 15 is disposed between the pushing block 13 and the cover plate 14, a pressing head 16 is disposed at the lower end of the pushing block 13, and the pressing head 16 is located above the profiling limiting groove 5.

In this embodiment, the indenter 16 is a silicone indenter.

In this embodiment, the side end of the lower press block 11 is further provided with a buffer 17.

While the embodiments of the present invention have been described in terms of practical embodiments, they are not intended to limit the scope of the invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.

Claims (5)

1. The utility model provides an air tightness testing device which characterized in that: it includes pushing down mechanism (1), mount pad (2), vacuum generator and gas leakage detector, set up on mount pad (2) profile modeling spacing groove (5) and with vacuum suction nozzle (6) that profile modeling spacing groove (5) are linked together, vacuum suction nozzle (6) with vacuum generator cooperatees, gas leakage detector with profile modeling spacing groove (5) cooperate.

2. The airtightness testing apparatus according to claim 1, wherein: push down mechanism (1) including fixed plate (7), be provided with cylinder (8) and linear guide (9) on fixed plate (7), sliding fit has down piece (10) on linear guide (9), cylinder (8) drive it slides to push down piece (10), it is located to push down piece (10) profile modeling spacing groove (5) top.

3. The airtightness testing apparatus according to claim 2, wherein: lower pressure member (10) are including briquetting (11) down, it has logical groove (12) to open on briquetting (11) down, it is provided with ejector pad (13) to lead to the cooperation in groove (12), be provided with apron (14) on ejector pad (13), ejector pad (13) with be provided with spring (15) between apron (14), the lower extreme of ejector pad (13) is provided with pressure head (16), pressure head (16) are located profile modeling spacing groove (5) top.

4. A tightness testing device according to claim 3, wherein: the pressure head (16) is a silica gel pressure head.

5. A tightness testing device according to claim 3 or 4, wherein: the side end of the lower pressing block (11) is also provided with a buffer (17).

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