Earphone coupling test device

Abstract

The utility model provides a kind of earphone coupling test device, it is related to earphone test field.The earphone coupling test device includes test fixture and coupling antenna.Test fixture includes fixed part, and fixed part is provided with the magnet for adsorbing and fixing earphone;Coupling antenna is towards fixed part and is arranged, for receiving the wireless signal emitted by earphone and transmitting it to test equipment.

Description

Technical Field

[0001] This utility model belongs to the field of headphone testing technology, and in particular relates to a headphone coupling testing device. Background Technology

[0002] Before leaving the factory, headphones undergo rigorous wireless performance testing to ensure they meet relevant standards and user requirements. Traditional headphone wireless performance testing typically requires manually holding the headphones or placing them on a simple stand, then receiving signals via a coupling antenna. This method suffers from low positioning accuracy, susceptibility to external interference, and low operational efficiency. Furthermore, when manually held, maintaining a stable relative position between the headphones and the coupling antenna is difficult, impacting overall testing efficiency. Utility Model Content

[0003] In view of this, the present invention provides a headphone coupling test device, which aims to improve the positioning accuracy and operational efficiency of headphone wireless performance testing.

[0004] The technical solution of this utility model is implemented as follows: This utility model provides an earphone coupling test device, including a test fixture and a coupling antenna. The test fixture includes a fixing part, which is provided with a magnet for attracting and fixing the earphone. The coupling antenna is disposed towards the fixing part and is used to receive the wireless signal emitted by the earphone and transmit it to the test equipment. Attached Figure Description

[0005] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0006] Figure 1 Test state diagram of an embodiment of the headphone coupling test device provided by this utility model; Figure 2 for Figure 1 First-view view of the headphone coupling test device in the image; Figure 3 for Figure 1 A second-view diagram of the headphone coupling test device in the image; Figure 4 for Figure 1 Diagram of the test fixture for the headphone coupling test device.

[0007] Explanation of reference numerals in the attached figures: 100. Headphone coupling test device; 1. Test fixture; 11. Fixing part; 111. Groove; 12. Magnet; 13. First support part; 131. Elongated hole; 14. Connecting part; 141. Mounting through hole; 142. First opening; 15. Second support part; 2. Coupled antenna; 300. Headphones; 3. Earmuffs. Detailed Implementation

[0008] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0009] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0010] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. "Multiple" refers to two or more. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0011] Before leaving the factory, headphones undergo rigorous wireless performance testing to ensure they meet relevant standards and user requirements. Traditional headphone wireless performance testing typically requires manually holding the headphones or placing them on a simple stand, then receiving signals via a coupling antenna. This method suffers from low positioning accuracy, susceptibility to external interference, and low operational efficiency. Furthermore, when manually held, maintaining a stable relative position between the headphones and the coupling antenna is difficult, impacting overall testing efficiency.

[0012] In view of this, this utility model provides a headphone coupling testing device, aiming to improve the positioning accuracy and operational efficiency of headphone wireless performance testing. This testing device can be used for various headphone wireless performance testing scenarios, such as Bluetooth signal strength testing, wireless transmission rate testing, multi-device connection stability testing, and audio latency testing.

[0013] Please see Figure 1 and Figure 2 The headphone coupling test device 100 includes a test fixture 1 and a coupling antenna 2. The test fixture 1 includes a fixing part 11, and the fixing part 11 is provided with a magnet 12 for attracting and fixing the headphone 300 (e.g., magnet 12). Figure 3 (As shown).

[0014] The fixing part 11 can take various forms, such as a groove 111 structure adapted to the shape of the headphones. This groove 111 structure can match the contour of the headphones, achieving initial positioning of the headphones from the shape level. Combined with the magnet 12 set in the groove 111, the headphones are further fixed by magnetic attraction, thereby ensuring that the headphones do not shift during testing. Alternatively, the fixing part 11 can also adopt an adjustable structure, such as by setting a movable baffle or a retractable positioning component, which works in conjunction with the magnet 12 to meet the testing requirements of different models and sizes of headphones, improving the versatility of the device.

[0015] The magnet 12 can be an embedded design, or it can adopt an adjustable mounting structure, as long as the magnetic force is concentrated on the metal part of the earphone, enhancing the accuracy and stability of the adsorption and preventing the earphone from tilting due to uneven magnetic force distribution. The magnet 12 can be made of strong magnetic materials such as neodymium iron boron.

[0016] The coupling antenna 2 is positioned towards the fixing part 11 and is used to receive the wireless signal emitted by the headphones and transmit it to the test equipment. The coupling antenna 2 can be positioned horizontally, vertically, and rotated 360° in space according to the position of the fixing part 11, so as to achieve precise alignment for the signal transmission point of different headphone models (such as the earbud base of in-ear headphones and the outer side of the earcup of over-ear headphones), so as to ensure that the antenna and the signal source achieve the best coupling state.

[0017] In summary, the headphone coupling testing device 100 provided in this embodiment includes a testing fixture 1 and a coupling antenna 2. The testing fixture 1 includes a fixing part 11, which is provided with a magnet 12 for attracting and fixing the headphone 300. The coupling antenna 2 is positioned towards the fixing part 11 and is used to receive the wireless signal emitted by the headphone 300 and transmit it to the testing equipment. This embodiment of the invention, by setting a magnet 12 in the fixing part 11 of the testing fixture 1, utilizes magnetic attraction to achieve a stable fixation of the headphone. Combined with the structural design of the fixing part 11 (such as a groove 111 adapted to the headphone shape or an adjustable positioning structure), it ensures the constant position of the headphone during the testing process from both mechanical limiting and magnetic attraction dimensions, greatly enhancing the accuracy and stability of headphone positioning. This optimizes the operation process, eliminating the need for repeated adjustments and calibrations, and effectively improving the efficiency of headphone wireless performance testing. At the same time, by setting the coupling antenna 2 towards the fixing part 11, the antenna can be accurately aligned with the signal transmission point of different headphone models, ensuring that the antenna and signal source are in the optimal coupling state, thus improving the accuracy of wireless signal reception.

[0018] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 To improve the stability of the positioning of the fixing part 11 and the magnet 12 for the earphone 300, the arrangement of the fixing part 11 and the magnet 12 has been optimized. Specifically, a groove 111 for accommodating at least a portion of the structure of the earphone is formed on the top of the fixing part 11, and the magnet 12 is disposed in the groove 111.

[0019] The inner wall of the groove 111 can be designed with an arc shape that matches the earphone shell, ensuring that the earphone can form a surface contact with the groove 111 after being inserted, thereby increasing the contact area and improving the stability of the structural positioning. For example, for earphones with an arc-shaped shell, the inner wall of the groove 111 can be made with a corresponding arc shape, so that the earphone and the groove 111 can fit together snugly, reducing the space for shaking.

[0020] The magnet 12 is positioned within the groove 111 precisely to correspond to the metal force points of the earphone: if there is a metal counterweight at the center of the bottom of the earphone, a circular magnet 12 can be embedded in the center of the bottom of the groove 111; if there are metal decorative strips on both sides of the earphone, a strip magnet 12 can be placed at corresponding positions on the inner walls of both sides of the groove 111. This point-to-point adsorption design allows for a more uniform distribution of magnetic force, preventing the earphone from tilting due to unilateral force.

[0021] In addition, the inner wall of the groove 111 can be made of an elastic material (such as silicone), which can enhance the physical fixation effect by slightly deforming and tightening, and avoid wear caused by hard contact between the earphone shell and the groove 111; while the surface of the magnet 12 can be treated with anti-magnetic shielding, retaining the magnetic force only on the side facing the earphone, to prevent unnecessary magnetic interference to the internal components of the earphone.

[0022] This embodiment of the utility model designs the fixing part 11 as a structure with a groove 111, and sets a magnet 12 in the groove 111 that precisely corresponds to the metal force point of the earphone, forming a dual fixing mechanism of physical limiting and magnetic adsorption, which significantly improves the stability of earphone positioning.

[0023] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 In order to be compatible with commonly used headphones 300 on the market, two grooves 111 are provided to accommodate the two earcups 3 of the headphones respectively; and one of the two grooves 111 has a built-in magnet 12 to attract the earcup 3 with built-in magnetic components.

[0024] This design is primarily aimed at products with dual-earc structures, such as over-ear or ear-hook headphones. Two independent grooves 111 position the left and right earcups 3 respectively, ensuring overall headphone stability during testing. Considering that many headphones typically only have magnetic components (such as magnets or metal components in noise-canceling modules) built into one side of the earcup 3, the design of placing magnets 12 only in the corresponding side groove 111 achieves effective fixation through targeted adsorption while avoiding mutual magnetic interference or unnecessary magnetic impact on sensitive components inside the headphone 300.

[0025] For example, in common over-ear noise-canceling headphones, the noise-canceling module is often integrated into one earcup. The magnet 12 in the corresponding groove 111 can precisely attract the earcup on that side. The other earcup, in conjunction with the groove 111 on the other side, achieves physical positioning through contour adaptation. This combination ensures the overall stability of the headphones while adapting to the structural characteristics of most headphones, improving the device's compatibility with mainstream products on the market. Furthermore, this design simplifies the placement and removal process; testers only need to gently place the earcup 3 of the headphones 300 into the corresponding groove 111 to complete the positioning and fixation, further improving testing efficiency.

[0026] In some embodiments, please refer to Figure 2 and Figure 3 To avoid structural interference caused by direct contact between the fixing part 11 and the preset reference surface, the fixing part 11 is suspended. Specifically, the test fixture 1 also includes a first support part 13, which is disposed around the fixing part 11 to provide support for the fixing part 11, so that the fixing part 11 is suspended.

[0027] The number of first support parts 13 can be set to one or more according to the structure and load-bearing requirements of the fixing part 11. Multiple first support parts 13 can be evenly distributed along the circumference of the fixing part 11 to ensure the stability of the fixing part 11 in the suspended state. The preset reference surface can be the test platform surface or other load-bearing structure surface on which the test device is placed. Through the supporting effect of the first support parts 13, a gap is formed between the fixing part 11 and the preset reference surface, avoiding structural interference or signal interference caused by direct contact between the fixing part 11 and the preset reference surface (such as the base plate 16 used to set the first support parts 13).

[0028] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 To reduce the blocking effect of the first support part 13 on the transmitted signal of the earphone 300, the earphone 300 should maintain an appropriate distance from the first support part 13. The fixing part 11 used to fix the earphone 300 needs to be made of a material with low dielectric constant and low loss tangent to ensure that the wireless signal transmission is not subject to excessive interference. If the size of the fixing part 11 is increased, the cost will inevitably increase accordingly. Therefore, a connecting part 14 is added to the outside of the fixing part 11.

[0029] Specifically, the test fixture 1 also includes a connecting part 14, which has a mounting through hole 141; a fixing part 11 is embedded in the mounting through hole 141, and the outer peripheral wall of the fixing part 11 cooperates with the inner peripheral wall of the mounting through hole 141 to achieve a stable assembly of the two; a first support part 13 is connected to the periphery of the connecting part 14, and a gap is formed between the first support part 13 and the fixing part 11, so that the fixing part 11 and the first support part 13 maintain a preset distance, so as to avoid the first support part 13 from blocking the earphone signal transmission path at close range.

[0030] The connecting part 14 serves as a transition, allowing the smaller fixing part 11 to meet the low dielectric characteristic requirement and control costs. It also spatially isolates the first support part 13 from the fixing part 11, ensuring the distance between the earphone and the first support part 13 and reducing the interference of the support structure on the wireless signal. At the same time, the cooperation between the connecting part 14 and the first support part 13 achieves stable support for the fixing part 11, thus balancing the multiple requirements of test accuracy, structural stability, and cost control.

[0031] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 4 To prevent the connector 14 from obstructing the earphone, an opening is formed in the connector 14. Specifically, the mounting through hole 141 extends laterally through the side of the connector 14, so that the connector 14 forms a first opening 142, which faces the coupling antenna 2.

[0032] This design allows the connecting part 14 to enclose the fixing part 11 while reserving a channel for wireless signal transmission through the horizontally penetrating first opening 142. When the coupling antenna 2 faces the fixing part 11, the wireless signal emitted by the earphone can be directly transmitted to the coupling antenna 2 through the first opening 142, avoiding signal obstruction or reflection by the connecting part 14. The size of the first opening 142 can be set according to the size of the fixing part 11 and the signal transmission path requirements, ensuring that there is no structural obstruction of the signal transmission path by the connecting part 14, further reducing interference of the connecting part 14 to the wireless signal and improving the accuracy of signal reception.

[0033] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 4 To accommodate different models of headphones and the height of the coupling antenna 2 on the fixing part 11, the first support part 13 is designed to be height-adjustable. Specifically, the first support part 13 has an elongated hole 131 extending along its own height direction; the connecting part 14 has a connecting hole, and the connector for connecting the elongated hole 131 and the connecting hole can slide along the elongated hole to adjust the height of the connecting part 14.

[0034] The length of the elongated hole 131 can be adjusted according to the actual height range. The connector and the wall of the elongated hole 131 can be fitted with a clearance or have a damping structure to ensure smooth sliding while maintaining the stability of the connecting part 14 at the adjusted height. The connector can also be a screw, i.e., the connecting part 14 has a threaded hole. When the connecting part 14 is adjusted to the target height, the screw passes through the elongated hole 131 and is threaded into the threaded hole of the connecting part 14, so that the end of the screw abuts against the outer wall of the first support part 13, thereby locking the connecting part 14 and the first support part 13 relative to each other, preventing the connecting part 14 from shifting in height due to vibration or other factors during the test, thus locking the fixed part 11 after height adjustment.

[0035] This utility model embodiment achieves flexible adjustment of the height of the fixing part 11 through a simple sliding fit structure, adapting to earphone models with different thicknesses and different signal transmission point heights.

[0036] In some embodiments, please refer to Figure 2 To facilitate the installation of the coupling antenna 2, a second support portion 15 is added. Specifically, the second support portion 15 is used to support the coupling antenna 2, and the second support portion 15 and the first support portion 13 are disposed at intervals around the fixing portion 11. The coupling antenna 2 is disposed on the side of the second support portion 15 facing the fixing portion 11. The coupling antenna 2 is configured as a plate-like structure.

[0037] By spacing the second support portion 15 from the first support portion 13, structural interference between the two can be avoided. The second support portion 15 is used to carry and support the coupling antenna 2, which is disposed on the side of the second support portion 15 facing the fixing portion 11, so that the signal receiving end of the coupling antenna 2 can be directly facing the earphone on the fixing portion 11, thereby optimizing the signal receiving path.

[0038] In some embodiments, please refer to Figure 1 and Figure 2 To reduce interference from the external environment during testing, a shielding enclosure is added. Specifically, the shielding enclosure covers the test fixture 1 and the coupling antenna 2.

[0039] The shield can be a closed or semi-closed structure made of metal plates (such as copper, aluminum or alloy materials), and its inner wall can be covered with wave-absorbing materials (such as carbonyl iron powder wave-absorbing cotton, foam wave-absorbing materials, etc.) to absorb external electromagnetic wave interference and prevent test signals from leaking out.

[0040] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A headphone coupling testing device, characterized in that, include: The test fixture includes a fixing part, which is provided with a magnet for attracting and fixing the earphones; A coupling antenna, positioned towards the fixed part, is used to receive wireless signals emitted by the earphones and transmit them to the test equipment.

2. The headphone coupling test device according to claim 1, characterized in that, The top of the fixing part has a groove for accommodating at least a portion of the structure of the earphone, and the magnet is disposed in the groove.

3. The headphone coupling test device according to claim 2, characterized in that, There are two grooves, each for accommodating one of the two earcups of the headphones; One of the two grooves contains a magnet to attract the earmuff containing a magnetic element.

4. The headphone coupling test device according to claim 1, characterized in that, The test fixture further includes a first support portion, which is disposed around the periphery of the fixed portion to provide support for the fixed portion, thereby suspending the fixed portion in a suspended state.

5. The headphone coupling test device according to claim 4, characterized in that, The test fixture also includes a connecting part, which is provided with a mounting through hole; The fixing part is disposed in the mounting through hole, and the first support part is connected to the periphery of the connecting part so that the fixing part and the first support part are spaced apart.

6. The headphone coupling testing device according to claim 5, characterized in that, The mounting through hole extends laterally through the side of the connector to form a first opening in the connector, the first opening facing the coupling antenna.

7. The headphone coupling test device according to claim 5, characterized in that, The first support portion has an elongated hole extending along its own height direction; The connecting part is provided with a connecting hole, and the connector for connecting the elongated hole and the connecting hole can slide along the elongated hole to adjust the height of the connecting part.

8. The headphone coupling test device according to claim 4, characterized in that, The test fixture further includes a second support portion for supporting the coupling antenna. The second support portion is disposed at a distance from the first support portion on the periphery of the fixed portion, and the coupling antenna is disposed on the side of the second support portion facing the fixed portion.

9. The headphone coupling test device according to claim 8, characterized in that, The coupling antenna has a plate-like structure and is attached to the second support portion.

10. The headphone coupling testing device according to claim 1, characterized in that, It also includes a shielding enclosure that covers the test fixture and the coupling antenna.

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