CN209841313U

CN209841313U - Acoustic device gas tightness testing arrangement

Info

Publication number: CN209841313U
Application number: CN201920966582.7U
Authority: CN
Inventors: 吴振兴
Original assignee: XIAMEN GREAT SOUND TECHNOLOGY Co Ltd
Current assignee: XIAMEN GREAT SOUND TECHNOLOGY Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2019-12-24
Anticipated expiration: 2029-06-25

Abstract

The utility model provides an acoustics device gas tightness testing arrangement relates to acoustics device technical field. Wherein, this kind of gas tightness testing arrangement includes: the base is provided with a test platform, a containing groove for placing an acoustic device is formed in the test platform, and a vent hole communicated with the outside is formed in the bottom wall of the containing groove and used for ventilating the containing groove; the bracket is vertically arranged on the base; the backpressure assembly comprises a movable plate, a pressure gauge and a pressure block, the pressure gauge and the pressure block are mounted on the movable plate and fixedly connected in the vertical direction, the pressure block is arranged right opposite to the accommodating groove and can move downwards to apply pressure to the acoustic device, and the pressure gauge is used for detecting the pressure value applied to the acoustic device by the pressure block; the movable handle comprises a handle seat fixed on the bracket and a movable rod capable of moving up and down relative to the handle seat, and the movable rod moves to drive the movable plate to move up and down. The air tightness testing device is simple to use and can quickly test the air tightness of the acoustic device.

Description

Acoustic device gas tightness testing arrangement

Technical Field

The utility model relates to an acoustics device technical field particularly, relates to an acoustics device gas tightness testing arrangement.

Background

With the development of intelligent electronic devices, smart phones have become standard accessories for modern people, and are frequently used. However, in daily life, the mobile phone is often dropped into water carelessly or due to other reasons, so that the mobile phone cannot be used normally or even scrapped, and the requirement of a user on the waterproof performance of the smart phone is gradually increased. The reason why the mobile phone is soaked and disabled is mainly that after the mobile phone is soaked, water flows in from the ID sound outlet hole and fills the sound cavity, and when the sound cavity is filled with water, the water begins to permeate into the mobile phone and enters the mobile phone, so that the waterproof failure is caused. Therefore, the key for improving the waterproof performance of the mobile phone is to make the waterproof effect of the acoustic device of the mobile phone well.

In order to detect the waterproof effect of the acoustic device of the mobile phone, the air tightness of the acoustic device needs to be tested. However, the existing air tightness test method generally comprises the steps of directly placing the acoustic device in water, taking out the acoustic device, disassembling the acoustic device, and checking whether water enters the acoustic device or not to judge the air tightness of the product. The method is complex to operate and difficult to carry out batch test of products.

SUMMERY OF THE UTILITY MODEL

The utility model provides an acoustics device gas tightness testing arrangement aims at improving the loaded down with trivial details problem of acoustics device test procedure.

The utility model discloses a realize like this:

an acoustic device airtightness testing apparatus comprising:

the testing device comprises a base, a testing platform and a control module, wherein the base is provided with the testing platform, the testing platform is provided with a containing groove for containing an acoustic device, and the bottom wall of the containing groove is provided with a vent hole communicated with the outside and used for ventilating the containing groove;

the bracket is vertically arranged on the base;

the backpressure assembly comprises a movable plate, a pressure gauge and a pressure block, the pressure gauge and the pressure block are mounted on the movable plate and fixedly connected in the vertical direction, the pressure block is arranged right opposite to the accommodating groove and can move downwards to apply pressure to the acoustic device, and the pressure gauge is used for detecting the pressure value applied to the acoustic device by the pressure block;

the movable handle comprises a handle seat fixed on the support and a movable rod capable of moving up and down relative to the handle seat, and the movable rod moves to drive the movable plate to move up and down.

Further, in the preferred embodiment of the present invention, the movable plate has a side wing portion extending toward the movable handle, the side wing portion has a through hole, the movable rod includes a rod body and two stoppers disposed on the rod body, the lower end of the rod body is sleeved in the through hole, and the stoppers are disposed at the upper and lower ends of the side wing portion respectively, and when the rod body moves up and down, the rod body contacts with the upper and lower surfaces of the side wing portion to drive the side wing portion to move up and down.

Further, in the preferred embodiment of the present invention, the rod body includes an upper rod body and a lower rod body, the lower rod body has an external thread, the upper rod body is provided with an internal thread adapted to the lower rod body, one of the stoppers is disposed at the bottom of the lower rod body, and the other stopper is connected to the lower rod body by a thread.

Further, in the preferred embodiment of the present invention, a height limiting mechanism is further installed on the support, and the height limiting mechanism is located on the downward movement path of the movable handle to limit the downward movement of the movable handle.

Further, in the preferred embodiment of the present invention, the upper end of the height limiting mechanism is provided with an adjustable bolt for adjusting the limiting height of the height limiting mechanism.

Further, in the preferred embodiment of the present invention, the handle seat includes a handle mounting plate fixed to the bracket and a guide member fixed to the handle mounting plate and disposed in a hollow space, and the upper end of the movable rod is sleeved in the guide member and can move up and down relative to the guide member.

Further, in the preferred embodiment of the present invention, the bottom surface of the base is provided with at least four adjusting foot pads.

Further, in the preferred embodiment of the present invention, the backpressure assembly is connected to the support through a slide rail assembly, the slide rail assembly includes a vertical slide rail fixed to the support and a slide block slidably connected to the slide rail, and the backpressure assembly is fixedly connected to the slide block.

The utility model has the advantages that:

the utility model discloses an acoustic device gas tightness testing arrangement that above-mentioned design obtained, during the use, in placing test platform's storage tank in with the acoustic device that awaits measuring, exert pressure to acoustic device through the backpressure subassembly, then drum gas to the product through the vent, reach the atmospheric pressure of settlement (like 16KPa) in a certain time (for example 10 seconds), then carry out the pressurize test, if gaseous value of revealing surpasss the default (like 0.05KPa), then judge that the product gas tightness is unqualified. The test method is simple, and the air tightness test of a plurality of products can be rapidly carried out.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an air-tightness testing device according to an embodiment of the present invention at a first viewing angle;

FIG. 2 is a schematic cross-sectional view of the test platform of FIG. 1;

fig. 3 is a schematic structural diagram of an air-tightness testing device according to an embodiment of the present invention at a second viewing angle;

FIG. 4 is a schematic sectional view of the airtightness testing apparatus shown in FIG. 3 taken along the direction A-A;

fig. 5 is a schematic structural diagram of an air-tightness testing device according to an embodiment of the present invention at a third viewing angle.

Icon: an air-tightness testing device 100; a base 10; adjusting the foot pad 11; a test platform 20; a receiving groove 21; a vent hole 22; the first vent hole 22 a; a second ventilation hole 22 b; a bracket 30; a reinforcing plate 31; a backpressure assembly 40; a moving plate 41; a pressure gauge 42; a briquette 43; the flank portion 44; a through hole 45; a movable handle 50; a handle mounting plate 51 a; the guide 51 b; a movable lever 52; a rod body 53; a stopper block 54; an upper rod body 55; a lower rod body 56; a movable plate 57; a slide rail assembly 60; a slide rail 61; a slider 62; a height limiting mechanism 70; the bolt 71 is adjusted.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

Referring to fig. 1, the present embodiment provides an acoustic device airtightness testing apparatus 100 including a base 10, a testing platform 20, a bracket 30, a backpressure assembly 40, and a movable handle 50.

The base 10 is used to provide a bottom support for the test platform 20 and the rack. In order to make the base better adaptable to different support surfaces, in a preferred embodiment, the bottom surface of the base 10 is provided with at least four adjustment feet 11. Specifically, in the present embodiment, the base 10 is square, and the adjusting foot pads 11 are installed on four corners of the square base 10. The adjusting foot pad 11 comprises a base plate and a screw assembly fixed with the base plate, and the screw assembly is in threaded connection with the base.

The testing platform 20 is installed on the base 10, a containing groove 21 for placing an acoustic device is formed on the upper surface of the testing platform, and a vent hole 22 communicated with the outside is formed in the bottom wall of the containing groove 21 and used for ventilating the containing groove 21. Referring to fig. 2, the vent holes 22 include a first vent hole 22a extending downward along the bottom wall of the receiving cavity 21 and a second vent hole 22b extending laterally along the bottom of the first vent hole 22a to the side wall of the testing platform. Preferably, the diameter of the first ventilation hole 22a is smaller than the diameter of the second ventilation hole 22 b.

It will be appreciated that the vent 22 is adapted to be connected to a gas supply (not shown) which supplies gas to the test platform and is capable of measuring the magnitude of the gas pressure. The gas supply device is prior art and will not be described herein.

Further, an annular sealing gasket (not shown) is disposed on the bottom wall of the accommodating groove 21. More preferably, the sealing gasket is a silica gel gasket. When the sealing gasket is used, the sealing gasket is clamped between the acoustic device and the bottom wall of the accommodating groove 21, the sealing performance between the accommodating groove 21 and the acoustic device is enhanced, and a sealed test environment is formed between the acoustic device and the bottom wall of the accommodating groove 21.

Referring to fig. 3-5, the bracket 30 is vertically mounted on the base 10 for providing support for the backpressure assembly 40 and the movable handle 50. In order to improve the support stability of the bracket 30, it is preferable that a reinforcing plate 31 is provided at a side of the bracket 30 away from the mounting surface, the reinforcing plate 31 is a triangular plate, and two right-angled sides of the triangular plate are perpendicular to the bracket 30 and the base 10, respectively.

The backpressure assembly 40 is connected with the support 30 through the slide rail assembly 50, the slide rail assembly 60 comprises a vertical slide rail 61 fixed on the support 30 and a slide block 62 connected with the slide rail 61 in a sliding mode, and the backpressure assembly 40 is fixedly connected to the slide block 62. The slide block 62 moves up and down along the slide rail 61 to move the back pressure assembly 40 up and down relative to the bracket 30.

The back pressure assembly 40 comprises a moving plate 41, a pressure gauge 42 and a pressing block 43 which are arranged on the moving plate 41, the pressure gauge 42 and the pressing block 43 are fixedly connected along the vertical direction. The pressing piece 43 is disposed opposite to the accommodating groove 21 and can move downward to press the acoustic device. The pressure gauge 42 is used to detect the amount of pressure applied by the mass 43 to the acoustic device. Preferably, in the present embodiment, the pressure gauge 42 is a digital display pressure gauge, and the pressure value applied by the pressure block 43 to the acoustic device can be displayed on the pressure gauge 42 in real time.

It should be noted that the specific structure of the pressure gauge 42 is conventional and will not be described herein.

A movable handle 50 is mounted on the bracket 30 and is mounted to the side of the back pressure assembly 40. The movable handle 50 includes a handle base 51 fixed to the bracket 30 and a movable rod 52 capable of moving up and down relative to the handle base 51, and the movable rod 52 moves to move the movable plate 41 up and down.

Preferably, in the preferred embodiment, the handle holder 51 includes a handle mounting plate 51a fixed to the bracket 30 and a guide 51b fixed to the handle mounting plate 51a and disposed in a hollow manner, and the upper end portion of the movable rod 52 is fitted in the guide 51b and can move up and down with respect to the guide 51 b. The movement locus of the movable rod 52 is guided by the hollow guide 561b, ensuring that the movable rod 52 moves vertically.

Preferably, in the preferred embodiment, the moving plate 41 has a wing portion 44 extending toward the movable handle 50, and the wing portion 44 has a through hole 45. The movable handle 50 is connected with the movable handle 50 through the wing part 44, so that the movable handle 50 drives the movable plate 41 to move.

The movable rod 52 includes a rod body 53 and two stoppers 54 spaced apart from the rod body 53, the lower end of the rod body 53 is sleeved in the through hole 45, the two stoppers 54 are respectively disposed at the upper and lower ends of the wing portion 44, and when the rod body moves up and down, the two stoppers 54 respectively contact the upper and lower surfaces of the wing portion 44 to drive the wing portion 44 to move up and down. That is, when the rod 53 moves upward, the lower stopper 54 pulls the wing to move upward, and when the rod 53 moves downward, the upper stopper 54 pushes the wing 44 to move downward. Further preferably, the vertical height between the two stoppers 54 is greater than the vertical length of the through hole 45. This setting makes the body of rod 53 have the stroke margin of removal in through-hole 45, and stopper 54 just contacts with flank portion 44 after the body of rod 53 moves a certain distance, is favorable to the life of extension device.

It is further preferable that the stroke margin of the rod 53 moving in the through hole 45 is adjustable, specifically, the rod 53 includes an upper rod 55 and a lower rod 56, the lower rod 56 is provided with an external thread, the upper rod 55 is provided with an internal thread adapted to the lower rod 56, the lower rod 56 is inserted into the upper rod 55, and the insertion depth of the lower rod 56 is adjusted by the thread, so as to adjust the overall length of the rod 53. The lower rod body 56 is sleeved in the through hole 45, one limiting block 54 is arranged at the bottom of the lower rod body 56, and the other limiting block 54 is arranged at the upper end of the lower rod body 56 and is in threaded connection with the lower rod body 56. Namely, the limiting block at the upper end of the side part is in threaded connection with the lower rod body 56, so that the stroke of the rod body 53 can be further conveniently adjusted.

Further, a movable plate 57 is hinged to the top of the movable rod 52, the movable plate 57 is connected to a lifting mechanism (not shown), and the movable plate 57 is lifted by the lifting mechanism to realize the up-and-down movement of the movable rod 52. The lifting mechanism may be, for example, a cylinder assembly (not shown) or a handle member (not shown), and the handle member is manually pulled to move the movable rod 52 up and down.

Further, a height limiting mechanism 70 is further mounted on the bracket 30, and the height limiting mechanism 70 is located on a downward movement path of the movable handle 50 to limit the downward movement of the movable handle 50. Further, the upper end of the height limiting mechanism 70 is provided with an adjustable bolt 71, and the adjustable bolt 71 is in threaded connection with the upper surface of the height limiting mechanism 70 and is used for adjusting the limiting height of the height limiting mechanism 70. The movable handle 50 is limited from excessively pressing downwards by the height limiting mechanism 70, so that the back pressure assembly is prevented from excessively pressing downwards to cause damage to the acoustic device.

The testing process of the acoustic device airtightness testing apparatus 100 provided in this embodiment is as follows: the acoustic device to be tested is placed in the accommodating groove 21, the movable handle 50 is pulled down, and the pressing block 43 of the backpressure assembly 40 is driven to apply pressure to the acoustic device. And then starting the air supply device, blowing air to the product through the vent hole 12, reaching the set air pressure (such as 16KPa) within 10 seconds, then starting to test for 10 seconds, and finally judging that the air tightness of the acoustic device is qualified if the leakage value is smaller than a preset threshold (such as 0.05KPa), and judging that the air tightness of the acoustic device is unqualified if the leakage value is larger than the preset threshold (such as 0.05 KPa).

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An acoustic device airtightness testing apparatus, comprising:

the bracket is vertically arranged on the base;

2. The device for testing the airtightness of an acoustic device according to claim 1, wherein the moving plate has a side wing portion extending in the direction of the movable handle, the side wing portion has a through hole, the movable rod includes a rod body and two stoppers disposed on the rod body at intervals, the lower end portion of the rod body is fitted in the through hole, the two stoppers are disposed at the upper and lower ends of the side wing portion, respectively, and when the rod body moves up and down, the two stoppers are in contact with the upper and lower surfaces of the side wing portion, respectively, to drive the side wing portion to move up and down.

3. The device for testing the airtightness of an acoustic device according to claim 2, wherein the rod body comprises an upper rod body and a lower rod body, the lower rod body has an external thread, the upper rod body is provided with an internal thread adapted to the lower rod body, one of the stoppers is disposed at the bottom of the lower rod body, and the other stopper is in threaded connection with the lower rod body.

4. The acoustic device airtightness testing apparatus according to claim 1, wherein a height limiting mechanism is further mounted on the support, and the height limiting mechanism is located on a movement path of the movable handle moving downward to limit the movable handle moving downward.

5. The acoustic device airtightness testing apparatus according to claim 4, wherein an adjustable bolt is provided at an upper end of the height limiting mechanism for adjusting a limiting height of the height limiting mechanism.

6. The acoustic device airtightness testing apparatus according to claim 1, wherein the handle base includes a handle mounting plate fixed to the bracket and a guide member fixed to the handle mounting plate and provided in a hollow manner, and an upper end portion of the movable rod is fitted in the guide member and is movable up and down with respect to the guide member.

7. The acoustic device airtightness testing apparatus according to claim 1, wherein the bottom surface of the base is provided with at least four adjustment feet.

8. The acoustic device airtightness testing apparatus according to claim 1, wherein the backpressure assembly is connected to the support through a slide rail assembly, the slide rail assembly includes a vertical slide rail fixed to the support and a slide block slidably connected to the slide rail, and the backpressure assembly is fixedly connected to the slide block.