Miniature loudspeaker air tightness test tool

Abstract

The utility model discloses a miniature loudspeaker air tightness test tool, comprising an upper test module and a lower test module which are oppositely arranged up and down, a sealing member is arranged between the upper test module and the lower test module, the upper test module is connected with an air tightness device, and the lower test module is provided with a flexible glue fixing member. According to the air tightness test jig for the miniature loudspeaker, a product to be tested is integrally pressed into the soft rubber fixing piece with the front face facing upwards, the edge of the product to be tested is sealed, then the upper test module and the lower test module are combined, and the air tightness equipment blows air to the upper test module, so that the front face of the product to be tested generates preset pressure; according to the test fixture, the air blowing is stopped after the preset pressure is reached, whether the pressure is kept or lower than the preset pressure is observed through the airtight equipment within the preset time so as to test the air tightness of the loudspeaker, the test fixture is simple in structure and reasonable in design, the edge of the loudspeaker does not need to be pressed and fixed in the test process, and then the air tightness test accuracy is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to loudspeaker technical field, especially in a kind of miniature loudspeaker air tightness test fixture. BACKGROUND

[0002] Loudspeaker is commonly known as loudspeaker, it is the device that electric signal energy is changed into sound energy, and can be radiated to limited space (for example room) or outdoor space with acoustic energy.Loudspeaker is by fixed permanent magnet, coil and cone paper basin, there are electric type, electromagnetic type etc., are divided into built-in loudspeaker, external loudspeaker, loudspeaker works, coil is through the alternating current of size and direction that changes with time, is used to replay music, voice etc.Signal.

[0003] However, with the development of science and technology, user's performance requirement to small, miniature loudspeaker is higher and higher, and with the application of loudspeaker in outdoor, the waterproof level requirement of loudspeaker is upgraded from IP65 to IP67 or IP68, and in order to ensure that loudspeaker meets the requirements when leaving factory, the air tightness of these small, miniature loudspeaker is tested;In prior art, immersion full detection test or air tightness equipment test is generally used, but using immersion full detection method, the drum paper / film and glue will be changed after soaking, and then the product cannot be sold;When using air tightness equipment to carry out front positive pressure test, the edge of loudspeaker is pressed by test fixture during positioning, and "edge pressing" stress is formed, so the front sealing property of loudspeaker is enhanced, air tightness is misjudged as qualified, and then the test accuracy of loudspeaker is affected. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of miniature loudspeaker air tightness test fixture with simple structure, ensure test accuracy.

[0005] To solve the above technical problems, the utility model can use the following technical solutions to realize:

[0006] A kind of miniature loudspeaker air tightness test fixture, including upper test module and lower test module being arranged oppositely, and sealing element is arranged between upper test module and lower test module, and upper test module is connected with air tightness equipment, and lower test module is provided with soft glue fixing piece, and the whole to be measured product is placed in soft glue fixing piece, the edge of to be measured product is sealed by soft glue fixing piece, and upper test module and lower test module are combined, air tightness equipment blows, thereby realizing the air tightness test of product.

[0007] In one embodiment, the upper test module includes an upper mounting template and an upper die seat, the upper die seat is fixed to the upper mounting template, and the upper die seat has an upper test cavity, and an air inlet hole is formed in the side wall of the upper die seat and is in communication with the upper test cavity, and the air tightness equipment blows into the upper test cavity through the air inlet hole.

[0008] In one of the embodiments, the upper die seat is provided with a sealing groove, and a sealing member is installed in the sealing groove.

[0009] In one of the embodiments, the lower test module comprises a lower installation template and a lower die seat, the lower die seat is fixed to the lower installation template through a support column, the lower die seat is provided with an installation slot, a soft glue fixing member is arranged in the installation slot and is fixed and positioned by a fastener, and the soft glue fixing member is provided with a lower test cavity corresponding to the upper test cavity.

[0010] In one of the embodiments, a through hole is formed in the bottom of the lower die seat, and a gas vent hole corresponding to the through hole is formed in the bottom of the soft glue fixing member.

[0011] In one of the embodiments, the lower installation template is provided with a jacking cylinder, and the jacking cylinder is located at the bottom of the lower die seat and corresponds to the through hole.

[0012] In one of the embodiments, the fastener is connected to the lower die seat through a screw, and the edge of the fastener fixes and positions the top of the soft glue fixing member.

[0013] In one of the embodiments, the top surface of the fastener is flush with the top surface of the lower die seat.

[0014] In one of the embodiments, the soft glue fixing member is made of silica gel material.

[0015] In one of the embodiments, the sealing member is a sealing ring and is made of rubber material. Advantages

[0016] The utility model micro -size loudspeaker air -tightness test fixture, install soft glue fixing member in lower test module, and the product to be tested is pressed into the soft glue fixing member as a whole with the front face upward, through the elastic extrusion reaction force of the soft glue fixing member itself, the edge of the product to be tested can be sealed, then the upper test module moves downward, and the lower test module is combined, and the air -tightness equipment blows to the upper test module, so that the front face of the product to be tested generates the preset pressure, after reaching the preset pressure, the air -tightness equipment stops blowing, and whether the pressure is maintained or lower than the preset pressure is observed through the air -tightness equipment in the predetermined time, to realize the test of loudspeaker air -tightness, and the structure of the test fixture is simple, reasonable in design, and the edge of the loudspeaker does not need to be pressed and fixed during testing, thereby ensuring the accuracy of air -tightness test. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an exploded view of the utility model micro -size loudspeaker air -tightness test fixture;

[0018] Figure 2The upper die holder of the micro loudspeaker airtightness test fixture is shown in the figure;

[0019] Figure 3 The soft glue fixing part, fastener and jacking air cylinder installation schematic diagram of the micro loudspeaker airtightness test fixture is shown in the figure;

[0020] Figure 4 The lower die holder of the micro loudspeaker airtightness test fixture is shown in the figure;

[0021] Figure 5 The soft glue fixing part of the micro loudspeaker airtightness test fixture is shown in the figure.

[0022] As shown in the drawings:

[0023] 100, upper test module; 110, upper installation template; 120, upper die holder; 121, upper test cavity; 122, air inlet hole; 123, sealing groove;

[0024] 200, lower test module; 210, lower installation template; 220, lower die holder; 221, installation groove; 222, through hole; 230, support column;

[0025] 300, sealing part;

[0026] 400, soft glue fixing part; 410, lower test cavity; 420, air leakage hole;

[0027] 500, fastener;

[0028] 600, jacking air cylinder. DETAILED DESCRIPTION

[0029] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using these specific details. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application. Therefore, the specific embodiments described herein are not intended to limit the present application, but rather, the intent is to cover all modifications and alternatives falling within the scope of the present application.

[0030] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] Please refer to Figure 1 A kind of micro loudspeaker air tightness test fixture, including upper test module 100 and lower test module 200 being arranged oppositely, and be provided with sealing element 300 between upper test module 100 and lower test module 200, and upper test module 100 is connected with air tightness equipment, and lower test module 200 is provided with soft glue fixing piece 400, the product to be tested is placed in soft glue fixing piece 400 as a whole, the edge of the product to be tested is sealed by soft glue fixing piece 400, and the upper test module 100 and lower test module 200 are closed, air tightness equipment blows, by which the air tightness test of product is realized.

[0033] Specifically, in the embodiment, soft glue fixing piece 400 is installed in lower test module 200, and upper test module 100 is connected with air tightness equipment, and the air tightness equipment (air tightness detector) is existing equipment and commonly seen on the market, when testing the product (loudspeaker), the product to be tested is pressed into soft glue fixing piece 400 as a whole with the front face upward, and the soft glue fixing piece 400 is made of silica gel material, so that the soft glue fixing piece 400 has a certain elasticity, and the reaction force generated by extruding the soft glue fixing piece 400 can seal the edge of the product to be tested, after the product to be tested is placed, upper test module 100 moves downward and is closed with lower test module 200, and after closing, sealing element 300 seals between upper test module 100 and lower test module 200, and the sealing element 300 is a sealing ring and is made of rubber material, which can ensure that there is no leakage between upper test module 100 and lower test module 200, at this time, air tightness equipment inputs gas into upper test module 100, so that a certain pressure is generated on the front face of the product to be tested, when the air tightness equipment stops conveying after conveying to the set pressure, and waits for a preset time, if the pressure is lower than the set pressure within the preset time, it indicates that the tested product is qualified, if the pressure is lower than the set pressure within the preset time, it indicates that the tested product is unqualified, finally, the air tightness test of the product is realized, and the overall structure of the test fixture is simple and reasonable in design, and there is no need to press the edge of the product during testing, so that the accuracy of the air tightness test of the product can be ensured, and the waterproof level of the loudspeaker can reach IP67 or IP68.

[0034] Please refer to Figures 1 to 5 , in order to realize the air tightness detection of the product, therefore, in the embodiment, the upper test module 100 includes an upper installation template 110 and an upper die seat 120, the upper die seat 120 is fixed to the upper installation template 110, and the upper die seat 120 has an upper test cavity 121, and the side wall of the upper die seat 120 is provided with an air inlet hole 122 communicated with the upper test cavity 121, and the air tightness device blows air into the upper test cavity 121 through the air inlet hole 122, and the lower test module 200 includes a lower installation template 210 and a lower die seat 220, the lower die seat 220 is fixed to the lower installation template 210 through a support 230, and the lower die seat 220 is provided with a mounting groove 221, a soft glue fixing piece 400 is arranged in the mounting groove 221 and is limited and fixed by a fastener 500, and the soft glue fixing piece 400 is provided with a lower test cavity 410 corresponding to the upper test cavity 121.

[0035] During testing, the product to be tested is pressed into the lower test cavity 410 of the soft glue fixing piece 400, and then the upper test module 100 is driven to move towards the lower test module 200, so that the upper die seat 120 and the lower die seat 220 are closed, and an air tightness test cavity is formed between the upper test cavity 121 and the lower test cavity 410 after the die is closed, and the air tightness device starts to blow air, the gas enters the air tightness test cavity through the air inlet hole 122, and a certain pressure is generated in the air tightness test cavity, when the air tightness device delivers to the set pressure, it will stop delivering, at this time, whether the pressure is stable or rapidly decreases is observed through the air pressure display screen on the air tightness device, to judge whether the product is qualified.

[0036] In order to make the test fixture simple in structure and reasonable in design during testing, a through hole 222 is formed in the bottom of the lower die seat 220, and a gas vent hole 420 corresponding to the through hole 222 is formed in the bottom of the soft glue fixing piece 400, if the product to be tested is unqualified, the gas in the upper test cavity 121 and the lower test cavity 410 will leak out from the gas vent hole 420 in the bottom of the soft glue fixing piece 400 and the through hole 222 of the lower die seat 220, to ensure the flow of the gas, and thus make the structure of the test fixture reasonable.

[0037] Because the models of the loudspeakers are different, in order to make a set of test fixture capable of testing loudspeakers of different models, the fastener 500 is connected with the lower die seat 220 through a screw, and the top of the soft glue fixing piece 400 is limited and fixed by the edge of the fastener 500, the fastener 500 can be disassembled and assembled through the screw, so that the soft glue fixing piece 400 in the mounting groove 221 of the lower die seat 220 can be taken out and replaced with a soft glue fixing piece 400 of a corresponding model, and after replacement, the fastener 500 is installed to the lower die seat 220 through the screw to limit and fix the soft glue fixing piece 400, so as to improve the universality and practicality of the test fixture and reduce the cost of enterprises.

[0038] Please refer to Figure 1 and Figure 3 In order to realize the automatic test, the lower installation template 210 in the embodiment is provided with a jacking cylinder 600, and the jacking cylinder 600 is located at the bottom of the lower die seat 220 and corresponds to the through hole 222. The upper test module 100 and the lower test module 200 can be installed on the automatic equipment through the upper installation template 110 and the lower installation template 210, and the upper test module 100 can be connected with the cylinder, and the cylinder drives the upper test module 100 to move downward to combine with the lower test module 200, at the same time, the product to be tested can be pressed into the soft rubber fixing piece 400 through the mechanical hand, after the test is completed, the product in the lower test cavity 410 can be jacked out through the through hole 222 and the air vent 420 by the jacking cylinder 600, and then the mechanical hand is used to take out the product, so that the automatic test can be realized, the test efficiency is improved, and the labor cost is reduced.

[0039] Finally, please refer to Figure 1 and Figure 2 In order to ensure the sealing between the upper die seat 120 and the lower die seat 220, the sealing groove 123 is arranged on the upper die seat 120, and the sealing piece 300 (the sealing ring) is installed in the sealing groove 123, and the top surface of the fastener 500 is flush with the top surface of the lower die seat 220. The sealing piece 300 can be installed and fixed through the sealing groove 123, and then the sealing between the upper die seat 120 and the lower die seat 220 is realized through the sealing piece 300, and the top surface of the fastener 500 is flush with the top surface of the lower die seat 220, so that the bottom surface of the upper die seat 120 and the top surface of the lower die seat 220 can be sealed.

[0040] The basic principles and main features of the utility model and the advantages of the utility model are shown and described above. Any person skilled in the art can smoothly implement the utility model according to the drawings shown in the specification and the above description; however, any slight change, modification and equivalent change made by any person skilled in the art within the scope of the technical scheme of the utility model without departing from the utility model, using the above disclosed technical content, are equivalent embodiments of the utility model; at the same time, any equivalent change, modification and evolution of the above embodiments made according to the essential technology of the utility model are still within the protection scope of the technical scheme of the utility model.

Claims

1. A micro speaker air tightness test fixture, characterized by: The test module comprises an upper test module and a lower test module which are arranged in an upper and lower relative manner, a sealing member is provided between the upper test module and the lower test module, the upper test module is connected to an airtight device, and the lower test module is provided with a soft rubber fixing member; The product to be tested is placed as a whole in the soft rubber fixture, which seals the edge of the product to be tested. The upper test module and the lower test module are molded together, and the airtight equipment blows air to achieve airtightness testing of the product.

2. The micro-speaker airtightness test fixture according to claim 1, characterized in that: The upper test module includes an upper mounting template and an upper mold base. The upper mold base is fixed to the upper mounting template, and the upper mold base has an upper test cavity. An air inlet hole connected to the upper test cavity is opened on the side wall of the upper mold base. The airtight equipment blows air into the upper test cavity through the air inlet hole.

3. The micro-speaker airtightness test fixture according to claim 2, characterized in that: The upper die seat is provided with a sealing groove, and the sealing member is installed in the sealing groove.

4. The micro-speaker airtightness test fixture according to claim 2, wherein: The lower test module includes a lower mounting template and a lower mold base. The lower mold base is fixed to the lower mounting template by a support, and the lower mold base is provided with a mounting groove. The soft rubber fixing part is arranged in the mounting groove and is limited and fixed by fasteners. The soft rubber fixing part is provided with a lower test cavity corresponding to the upper test cavity.

5. The micro-speaker air tightness test fixture according to claim 4, characterized in that: The bottom of the lower mold base is provided with a through hole, and the bottom of the soft rubber fixing piece is provided with an air release hole corresponding to the through hole.

6. The micro-speaker airtightness test fixture according to claim 5, characterized in that: The lower mounting template is provided with a lifting cylinder, and the lifting cylinder is located at the bottom of the lower die base and corresponds to the through hole.

7. The micro-speaker airtightness test fixture according to claim 4, characterized in that: The fastener is connected to the lower die base through screws, and the edge of the fastener limits and fixes the top of the soft rubber fixing part.

8. The micro-speaker airtightness test fixture according to claim 7, characterized in that: The top surface of the fastener is flush with the top surface of the lower die base.

9. The micro-speaker airtightness test fixture according to claim 1, wherein: The soft rubber fixing piece is made of silicone material.

10. The micro-speaker airtightness test fixture according to claim 1, characterized in that: The sealing element is a sealing ring and is made of rubber material.

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