Multi-split earphone acoustic test fixture

Abstract

The utility model discloses a multi-split earphone acoustic test fixture, which comprises a base and a carrier, the base is provided with a preset number of sound wave receivers, the upper end of each sound wave receiver is provided with an elastic plugging part, the elastic plugging part extends out of the upper wall of the base, the elastic plugging part is provided with a first hollow cavity, and the first hollow cavity is provided with a second hollow cavity. The carrier is provided with a positioning seat corresponding to the sound wave receiver, the positioning seat is provided with an elastic limiting seat matched with the elastic insertion part, the elastic limiting seat is provided with a second hollow cavity matched with the first hollow cavity, and the positioning seat is used for placing an earphone and enabling a sound production surface of the earphone to extend into the second hollow cavity. An earphone is placed through the detachable carrier, then feeding, testing and discharging can be rapidly achieved, the detection efficiency is effectively improved, meanwhile, relative sealing of the first hollow cavity and the second hollow cavity can be achieved through cooperation of the elastic insertion part and the elastic limiting base, and the problem of sound leakage is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of earphone testing, in particular to a one-to-many earphone acoustic testing fixture. Background Art

[0002] With the improvement of product quality, it is now necessary to fully test the earphones to test the sound quality of the earphones and whether the predetermined sound waves meet the requirements, thereby improving customer satisfaction. The existing earphone test is generally to put one earphone into the test machine, and then take the other end out by another process. The inspection is generally slow, and only one earphone can be tested at a time, so the test efficiency is low.

[0003] Of course, there are also existing one-to-many test fixtures, but there is also the problem of difficulty in removing the earphones. For example, Chinese patent CN202223208309.9 adopts a detachable setting of the earphones in the test device, thereby achieving relative sealing of the test channel and reducing mutual interference between adjacent test channels. However, there is still a problem of slow detection efficiency. Utility Model Content

[0004] The main purpose of the utility model is to propose a one-to-many headphone acoustic test fixture, which aims to improve the existing test fixture so that the test channel and the carrier for placing the headphones are separated, thereby facilitating the disassembly and loading of the headphones, effectively improving the test efficiency, and at the same time, through a predetermined sealing structure, ensuring the relative sealing between the carrier and the test channel, thereby ensuring the test accuracy.

[0005] To achieve the above purpose, the utility model proposes a one-to-many earphone acoustic test fixture, comprising:

[0006] A base, wherein the base is provided with a predetermined number of sound wave receivers, wherein the upper ends of the sound wave receivers are provided with elastic plug-in parts, wherein the elastic plug-in parts extend out of the upper wall of the base, and wherein the elastic plug-in parts are provided with a first hollow cavity;

[0007] A carrier, wherein the carrier is provided with a positioning seat corresponding to the sound wave receiver, the positioning seat is provided with an elastic limiting seat matched with the elastic plug-in portion, the elastic limiting seat is provided with a second hollow cavity matched with the first hollow cavity, and the positioning seat is used to place the earphone and allow the sound-emitting surface of the earphone to extend into the second hollow cavity.

[0008] In the actual design, the earphones are placed on a detachable carrier, so that loading, testing and unloading can be quickly achieved, which effectively improves the detection efficiency. At the same time, through the cooperation of the elastic plug-in part and the elastic limit seat, the first hollow cavity and the second hollow cavity can be relatively sealed, effectively avoiding the problem of sound leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1It is a three-dimensional schematic diagram of the utility model;

[0010] Figure 2 This is an exploded view of the elastic plug-in portion and the elastic limit seat of the utility model;

[0011] Figure 3 It is a three-dimensional schematic diagram of a single test fixture;

[0012] Figure 4 A cross-sectional view of a single test fixture.

[0013] In the figure,

[0014] 1 is the base, 10 is the sound wave receiver,

[0015] 2 is a carrier, 21 is an elastic plug-in portion, 211 is a first hollow cavity, 22 is an elastic limit seat, 221 is a second hollow cavity,

[0016] 3 is a telescopic motor, 31 is a pressure seat,

[0017] 41 is a first peripheral wall, 42 is a second peripheral wall, 43 is a first limiting wall, 44 is a wedge-shaped groove, 45 is a wedge-shaped portion,

[0018] 5 is a sealing ring, 51 is a first inclined surface, 52 is a second inclined surface,

[0019] 6 is a profiling seat, 61 is a profiling groove, 62 is a positioning convex block,

[0020] 7 is the active speaker and 8 is the sound output tube. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0024] like Figures 1 to 4 As shown, a one-to-many earphone acoustic test fixture includes:

[0025] A base 1, wherein the base 1 is provided with a predetermined number of sound wave receivers 10, wherein an elastic plug-in portion 21 is provided at the upper end of the sound wave receiver 10, wherein the elastic plug-in portion 21 extends out of the upper wall of the base 1, and wherein the elastic plug-in portion 21 is provided with a first hollow cavity 211;

[0026] The carrier 2 is provided with a positioning seat corresponding to the sound wave receiver 10, the positioning seat is provided with an elastic limiting seat 22 matched with the elastic plug-in portion 21, the elastic limiting seat 22 is provided with a second hollow cavity 221 matched with the first hollow cavity 211, and the positioning seat is used to place the earphone and make the sound-emitting surface of the earphone extend into the second hollow cavity 221.

[0027] In the actual design, the earphones are placed on a detachable carrier 2, so that loading, testing and unloading can be quickly achieved, which effectively improves the detection efficiency. At the same time, through the cooperation of the elastic plug-in part 21 and the elastic limit seat 22, the first hollow cavity 211 and the second hollow cavity 221 can be relatively sealed, effectively avoiding the problem of sound leakage.

[0028] Specifically, the upper wall of the base 1 and the lower wall of the carrier 2 are respectively provided with mutually matching guide columns and guide holes (not shown), and telescopic motors 3 or telescopic cylinders are provided on both sides of the base 1. The driving end of the telescopic motor 3 or telescopic cylinder is provided with a pressure seat 31, and the pressure seat 31 can apply pressure to the upper wall of the carrier 2 to make the base 1 and the carrier 2 fit together. In this way, the mutual installation between the base 1 and the carrier 2 is realized, and the sealing between the elastic plug-in portion 21 and the elastic limit seat 22 can be ensured by the provision of the pressure seat 31.

[0029] In the embodiment of the utility model, the elastic limiting seat 22 includes a first peripheral wall 41 and a second peripheral wall 42, and the inner peripheral wall of the first peripheral wall 41 forms a first limiting wall 43 that is in contact with the outer peripheral wall of the elastic plug-in portion 21;

[0030] The height of the second peripheral wall 42 is smaller than that of the first peripheral wall 41. The outer peripheral wall of the first peripheral wall 41 and the inner peripheral wall of the second peripheral wall 42 form a wedge-shaped groove 44. The inner peripheral wall of the elastic plug-in portion 21 is provided with a wedge-shaped portion 45 that matches the wedge-shaped groove 44. When the elastic limit seat 22 and the elastic plug-in portion 21 are inserted into each other, the second hollow cavity 221 is reduced in diameter through the engagement of the wedge-shaped structure, and then closely fits with the outer peripheral wall of the sound outlet pipe of the earphone, thereby avoiding the problem of sound leakage.

[0031] Specifically, the lower wall surface of the first peripheral wall 41 is provided with a first inclined surface 51, and the first hollow cavity 211 is gradually reduced in diameter from top to bottom. The first inclined surface 51 serves as a guide during insertion, and the inclined surface of the first hollow cavity 211 serves as a sound collector. The outer peripheral wall of the elastic plug-in part 21 is provided with a sealing ring 5 (a special-shaped sealing ring, which not only limits the elastic plug-in part 21, but also achieves relative sealing of the outer peripheral wall. Of course, sound-absorbing materials can also be filled between the elastic plug-in part 21 and the sealing ring to reduce external influences). The sealing ring is provided with a second inclined surface 52 that matches the first inclined surface 51, which further ensures the sealing effect.

[0032] In the embodiment of the utility model, the sound wave receiver 10 is a 711 artificial ear (which is a prior art that converts sound waves into electrical signals), and a plurality of 711 artificial ears are connected to the detection system via a sound card and a signal conditioner.

[0033] By compiling computer testing software (i.e., testing system) to analyze the test, the quality of the product can be determined.

[0034] Specifically, the carrier is provided with eight positioning seats, and the adjacent positioning seats in the lateral direction are staggered. (Thereby reducing the problems of resonance and crosstalk.) It meets the production line product output requirement of nearly 1,000 PCS, optimizes the number of staff by 7 (previously about 12-15 staff), and greatly reduces the number of test equipment, saving resources significantly.

[0035] In the embodiment of the utility model, the diameter of the upper end of the elastic limit seat 22 located in the second hollow cavity 221 is smaller than the diameter of the sound outlet tube. When the sound outlet tube is inserted into the second hollow cavity 221, the sound outlet tube and the second hollow cavity 221 elastically offset each other, thereby achieving a relative sealing effect.

[0036] Specifically, the positioning seat is provided with a contoured seat 6, the contoured seat 6 is provided with a contoured groove 61, and the contoured groove is provided with a positioning protrusion 62, thereby ensuring the stable placement of the earphone.

[0037] In the embodiment of the utility model, an active speaker 7 is provided above the base 1, and the active speaker can send a predetermined signal to a plurality of headphones at the same time, such as playing music or a predetermined audio.

[0038] The elastic plug-in portion 21 and the elastic limiting seat 22 are made of rubber material, and the silicone is changed to a rubber material with better wear resistance and longer service life.

[0039] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A one-to-many earphone acoustic test fixture, characterized in that: include: A base, wherein the base is provided with a predetermined number of sound wave receivers, wherein the upper ends of the sound wave receivers are provided with elastic plug-in parts, wherein the elastic plug-in parts extend out of the upper wall of the base, and wherein the elastic plug-in parts are provided with a first hollow cavity; A carrier, wherein the carrier is provided with a positioning seat corresponding to the sound wave receiver, the positioning seat is provided with an elastic limiting seat matched with the elastic plug-in portion, the elastic limiting seat is provided with a second hollow cavity matched with the first hollow cavity, and the positioning seat is used to place the earphone and allow the sound-emitting surface of the earphone to extend into the second hollow cavity.

2. The one-to-many-headphone acoustic test fixture as claimed in claim 1, characterized in that: The upper wall of the base and the lower wall of the carrier are respectively provided with guide columns and guide holes that cooperate with each other. Telescopic motors or telescopic cylinders are provided on both sides of the base. The driving end of the telescopic motor or telescopic cylinder is provided with a pressure seat, which can apply pressure to the upper wall of the carrier and make the base and the carrier fit together.

3. The one-to-many-headphone acoustic test fixture as claimed in claim 1, characterized in that: The elastic limiting seat comprises a first peripheral wall and a second peripheral wall, wherein the inner peripheral wall of the first peripheral wall forms a first limiting wall which is in contact with the outer peripheral wall of the elastic plug-in portion; The height of the second circumferential wall is smaller than that of the first circumferential wall, the outer circumferential wall of the first circumferential wall and the inner circumferential wall of the second circumferential wall form a wedge-shaped groove, and the inner circumferential wall of the elastic plug-in portion is provided with a wedge-shaped portion matching the wedge-shaped groove.

4. The one-to-many-headphone acoustic test fixture as claimed in claim 3, characterized in that: The lower wall surface of the first peripheral wall is provided with a first inclined surface, and the first hollow cavity is gradually reduced in diameter from top to bottom; The outer peripheral wall of the elastic plug-in portion is sleeved with a sealing ring, and the sealing ring is provided with a second inclined surface matched with the first inclined surface.

5. The one-to-many-headphone acoustic test fixture as claimed in claim 1, characterized in that: The sound wave receiver is a 711 artificial ear, and a plurality of 711 artificial ears are connected to the detection system via a sound card and a signal regulator.

6. The one-to-many-headphone acoustic test fixture as claimed in claim 1, characterized in that: The carrier is provided with eight positioning seats, and the adjacent positioning seats in the transverse direction are staggered.

7. The one-to-many-headphone acoustic test fixture as claimed in claim 1, characterized in that: The diameter of the upper end of the elastic limiting seat located in the second hollow cavity is smaller than the diameter of the sound outlet tube. When the sound outlet tube is inserted into the second hollow cavity, the sound outlet tube and the second hollow cavity are elastically offset.

8. The one-to-many-headphone acoustic test fixture as claimed in claim 1, characterized in that: The positioning seat is provided with a profiling seat, the profiling seat is provided with a profiling groove, and the profiling groove is provided with a positioning protrusion.

9. The one-to-many-headphone acoustic test fixture as claimed in claim 1, characterized in that: An active speaker is arranged above the base, and the active speaker can send predetermined signals to a plurality of earphones at the same time.

10. The one-to-many-headphone acoustic test fixture as claimed in claim 1, characterized in that: The elastic plug-in portion and the elastic limiting seat are made of rubber material.

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