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CN-224233844-U - Test fixture and ear cover acoustic performance test system

CN224233844UCN 224233844 UCN224233844 UCN 224233844UCN-224233844-U

Abstract

The utility model provides a test fixture which is suitable for acoustic performance test of products, and comprises an artificial ear and a test fixture, wherein the test fixture is arranged on the artificial ear, a material placing position is arranged on the test fixture, a plurality of groups of positioning components are distributed on the material placing position, the plurality of groups of positioning components are enclosed to form a containing space for containing the products, the positioning components are movably arranged on the material placing position, the size of the containing space is adjusted by the movement of the positioning components, and the positioning components are locked to position the products in the containing space. The utility model also provides an earmuff acoustic performance testing system which is suitable for being matched with the testing jig to test the acoustic performance of the product, and comprises a discharging platform and a pressing mechanism arranged on the discharging platform. The earmuff acoustic performance test system can test and compare compression quantity, pressure value and acoustic performance of different earmuff materials, so that better earmuff materials and better molding clamping force can be better selected.

Inventors

  • LI XIUQING
  • WANG TIANXIANG

Assignees

  • 广东湾区智能终端工业设计研究院有限公司

Dates

Publication Date
20260512
Application Date
20250410

Claims (11)

  1. 1. The utility model provides a test fixture, is applicable to carrying out acoustic performance test to the product, a serial communication port, including artifical ear and test fixture, test fixture set up in on the artifical ear, be provided with the material level of putting on the test fixture, it has multiunit locating component to put to distribute on the material level, multiunit locating component encloses to establish to be used for the holding the accommodation space of product, locating component be the activity set up in on the material level of putting, borrow locating component's activity is in order to adjust the size of accommodation space, locking locating component so that the product is located in the accommodation space.
  2. 2. The test fixture of claim 1, wherein the placement locations are uniformly distributed with positioning stripes from inside to outside, whereby the placement locations of the product can be determined by the positioning stripes.
  3. 3. An earmuff acoustic performance testing system adapted to cooperate with the test fixture of any one of claims 1-2 to enable acoustic performance testing of the product, comprising: The discharging platform is used for placing the testing jig, and the testing jig is used for placing and testing the products; the pressure material mechanism comprises a fixing component and a pressure test component, wherein one end of the fixing component is fixed on the material discharging platform, one end of the pressure test component is slidably arranged on the fixing component, the pressure test component slides along the fixing component to press the product at different pressures, a pressure sensor is arranged at one end, far away from the fixing component, of the pressure test component, and the pressure sensor faces the product on the fixing component.
  4. 4. The earmuff acoustic performance test system of claim 3, wherein the pressure test assembly comprises a pressure test piece comprising a connecting end and a pressing end, the connecting end being connected to the fixed assembly, the pressure sensor being mounted to the pressing end.
  5. 5. The system of claim 4, wherein a locking member is provided on the connection end to lock the locking member so that the pressure test piece can be positioned at a predetermined location of the fixing assembly, and wherein the locking member is released so that the pressure test piece can slide along the fixing assembly.
  6. 6. The earmuff acoustic performance test system of claim 5, wherein the locking element is a set screw or the locking element is a catch.
  7. 7. The earmuff acoustic performance testing system of claim 4, wherein the connecting end is sleeved on the fixed assembly and is capable of sliding along the fixed assembly.
  8. 8. The earmuff acoustic performance test system of claim 4, wherein the connecting end is snapped onto and slidable along the fixed assembly.
  9. 9. The earmuff acoustic performance test system according to claim 3, wherein the fixing assembly comprises a fixing rod, one end of the fixing rod is fixed on the discharging platform, and graduations are uniformly distributed on the fixing rod along the length direction of the fixing rod.
  10. 10. The earmuff acoustic performance testing system of claim 3, wherein the pressure testing assembly is mounted on the fixed assembly via a sliding assembly, and the pressure testing assembly is connected with a power assembly that acts to slide the pressure testing assembly along the sliding assembly on the fixed assembly.
  11. 11. The system according to claim 3, wherein a supporting portion is provided at the bottom of the artificial ear, a flexible member is sleeved on the supporting portion to reinforce the placement of the artificial ear on a supporting platform, or a receiving groove for receiving the supporting portion is provided on the supporting platform, and the receiving groove is used to reinforce the placement of the artificial ear on the supporting platform.

Description

Test fixture and ear cover acoustic performance test system Technical Field The utility model relates to the technical field of electronic equipment testing, in particular to a testing jig and an ear cover acoustic performance testing system. Background Headphones typically have a larger drive unit that can provide a broader sound field and clearer sound quality. In addition, the headset is not directly inserted into the auditory canal, so that the friction and pressure of the auditory canal are reduced, the user cannot feel uncomfortable after wearing the headset for a long time, the hearing can be protected to a certain extent, and the headset has a better sound insulation effect. For the headphone, a circle of foam is added on the earmuff to be used as an inner village, and comfortable cloth or an outer cover made of soft leather, protein silk skin and the like is added. The choice of the foam material of the earmuff has great influence on the wearing comfort of the earphone, passive noise reduction and active noise reduction. In the prior art, the test can be carried out through the wearing of the artificial ear or a real person, the test operation of the artificial ear is troublesome, and the wearing test of the real person also needs repeated test of a plurality of persons. Whether the test is an artificial ear test or a real person wearing test, the consistency, the angle and the like of wearing have great influence on the test result, so that the acoustic performance of different materials is compared with that of the test data which need to be repeatedly and largely supported. This requires much time and labor, and the test cost is high. And whether the test is an artificial ear test or a real person wearing test, the foam of the earmuff can be influenced by the clamping force, and the relation between the acoustic influence and the compression amount of a single factor in the test foam material can not be accurately determined. Accordingly, there is a need for an earmuff acoustic performance test system that can perform compression, pressure value and acoustic performance test comparisons for different earmuff materials. Disclosure of utility model The utility model aims to provide a test fixture capable of carrying out positioning test on different earmuff materials. The utility model aims to provide an earmuff acoustic performance test system which can be matched with the test fixture to test and compare the compression amount, the pressure value and the acoustic performance of different earmuff materials. In order to achieve the above purpose, the utility model provides a testing fixture suitable for acoustic performance testing of products, comprising an artificial ear and a testing fixture, wherein the testing fixture is arranged on the artificial ear, a material placing position is arranged on the testing fixture, a plurality of groups of positioning components are distributed on the material placing position, the plurality of groups of positioning components are enclosed to form a containing space for containing the products, the positioning components are movably arranged on the material placing position, the size of the containing space is adjusted by the movement of the positioning components, and the positioning components are locked to position the products in the containing space. Compared with the prior art, the test fixture comprises the artificial ear and the test fixture. Be provided with the material level of putting on the test fixture, multiunit locating component encloses on the material level of putting and establishes into the accommodation space that is used for holding the product, and the size in accommodation space accessible multiunit locating component is adjusted to can be applicable to the product of all sizes, and the product passes through multiunit locating component's spacing can be firm set up in the accommodation space, thereby acoustic performance test can be better. Preferably, the discharging positions of the products can be determined by uniformly distributing positioning strips from inside to outside. In order to achieve the above another object, the present utility model provides an acoustic performance testing system for an earmuff, which is adapted to cooperate with the testing fixture to test the acoustic performance of a product, and comprises: the discharging platform is used for placing a testing jig, and the testing jig is used for placing and testing products; The pressing mechanism comprises a fixing assembly and a pressure testing assembly, one end of the fixing assembly is fixed on a discharging platform, one end of the pressure testing assembly is arranged on the fixing assembly in a sliding mode, the pressure testing assembly slides along the fixing assembly to press products at different pressures, a pressure sensor is arranged at one end, away from the fixing assembly, of the pressure testing assembly, and the pressure sensor faces the prod