Capacitive in-ear detection device

Abstract

The utility model discloses a capacitance type in-ear detection device, which comprises a box body and a test assembly arranged on the box body, the test assembly comprises a fixing unit, a first unit, a second unit and a third unit, the fixing unit is arranged on the box body, the first unit is connected with the box body through a first fixing plate, the first unit is positioned above the fixing unit, and the second unit is connected with the third unit through a second fixing plate. The second unit and the third unit are respectively arranged on two opposite sides of the fixed seat, the third unit is in communication connection with the box body, each unit is independently installed on the box body, different earphone sizes and test requirements are adapted, inconsistency of manual operation is avoided through a highly simulated test environment, consistent process operation and accurate data acquisition, and the test efficiency is improved. The verification efficiency and reliability of the capacitive in-ear detection function of the earphone are remarkably improved, and an effective tool is provided for product performance optimization and quality control.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone in-ear detection, in particular to a capacitive in-ear detection device. Background Technique

[0002] Earphone in-ear detection is a technology that detects whether an earphone is worn on the ear through a sensor, which is commonly found in TWS earphones and some wired intelligent earphones. With the popularization of wireless earphones and the increasing demand of users for "seamless interaction", this technology has become one of the key functions of modern earphones. The core of in-ear detection is to improve convenience, extend battery life and adapt to multi-scenario requirements through intelligent interaction.

[0003] If the test of earphone in-ear detection relies on traditional manual testing, which depends on manual subjective judgment of the earphone wearing state, the test consistency is poor, and the environment cannot maintain the standard scenario for a long time, resulting in inaccurate mis-trigger rate testing and low efficiency in adapting to different earphone structures. Content of the Utility Model

[0004] In view of the above situation, the purpose of the utility model is to provide a capacitive in-ear detection device, aiming to solve the technical problems mentioned in the background technique.

[0005] A capacitive in-ear detection device includes a box body and a test component arranged on the box body. The test component includes a fixing unit, a first unit, a second unit and a third unit. The fixing unit is arranged on the box body and is used for fixing the earphone. The first unit is connected to the box body through a first fixing plate and is located above the fixing unit. The first unit is used for pressing the earphone to simulate the human environment when the earphone is inserted into the ear. The second unit and the third unit are respectively arranged on opposite sides of the fixing unit. The second unit is used for touching the earphone to change the state of the earphone. The third unit is used for connecting the earphone to collect the test data of the earphone, and the third unit is communicatively connected to the box body.

[0006] Advantages of the Utility Model:

[0007] Through the lamination design of the first unit, the physical states (such as pressure and fit) when the earphone is worn and contacts with the human ear can be accurately simulated, ensuring that the test environment is close to the actual human wearing scenario, improving the accuracy of the detection results. The second unit can perform touch operations on the earphone (such as single click, double click, long press, etc.) to verify the response performance of the earphone under different interaction actions, ensuring the reliability of the touch function. The third unit collects key data such as capacitance change, touch response time, and signal stability of the earphone in real time through the communication interface and transmits it to the box body and the remote terminal for analysis. By analyzing the test data, defects in the capacitance sensing module of the earphone (such as insufficient sensitivity and accidental touch problems) can be quickly located, providing a direct basis for product design improvement. Each unit is independently installed on the box body, facilitating maintenance or upgrade, and adapting to different earphone sizes and test requirements. In summary, through a highly simulated test environment, consistent process operations, and accurate data collection, this device avoids the inconsistency of manual operations, significantly improves the verification efficiency and reliability of the capacitive in-ear detection function of the earphone, and provides an effective tool for product performance optimization and quality control.

[0008] Further, the fixing unit includes a base and a fixing seat provided on the base. The base is provided with a first hollow portion, and the fixing seat is provided with a card slot for fixing the earphone. The card slot is provided with a second hollow portion, and the second hollow portion corresponds to the power-on button of the earphone and the first hollow portion in position.

[0009] Further, the first unit includes a first handle, a first connecting rod, a first connecting plate, two counterweight blocks, and a pressing block. The opposite ends of the first handle are respectively connected to the first connecting portion and the first connecting rod. The surface of the first connecting portion facing away from the first handle is connected to the first fixing plate. The end of the first connecting rod away from the first handle is connected to the first connecting plate. The counterweight blocks are respectively arranged on the opposite two surfaces of the first connecting plate. One end of one of the counterweight blocks facing the fixing seat is connected to the pressing block, and the pressing block corresponds to the fixing seat in position.

[0010] Further, the opposite ends of the first connecting plate are respectively provided with a first sliding rod group and a second sliding rod group. One end of the first sliding rod group is connected to the first fixing plate, and the other end of the first sliding rod group passes through the first connecting plate and is connected to the box body. One end of the second sliding rod group is connected to one of the counterweight blocks through a second connecting plate, and the other end of the second sliding rod group passes through the first connecting plate and is connected to the counterweight block facing the pressing block.

[0011] Further, the surface of the pressing block facing away from the counterweight block is concavely formed with an accommodating space for accommodating the earphone.

[0012] Further, the second unit includes a second handle, a second fixing plate, a second connecting rod, a second connecting portion, a connecting block, and a ejector rod. The second fixing plate is connected to the box body. The second connecting portion is connected to the second fixing plate. One end of the second handle is movably connected to the second connecting portion, and the second handle is connected to one end of the second connecting rod through a first rotating block. The other end of the second connecting rod passes through the top of the box body and is connected to the connecting block. One end of the connecting block away from the second connecting rod is connected to the ejector rod, and the ejector rod corresponds to the position of the first hollow portion.

[0013] Further, a linear bearing is provided between the second fixing plate and the base. One end of the linear bearing is connected to the connecting block, and the other end of the linear bearing is provided on the top of the box body.

[0014] Further, the third unit includes a transmission mechanism and a sliding structure oppositely arranged on the base. The transmission mechanism includes a third handle, a third connecting rod, and a third connecting portion. The third connecting portion is provided on the base. One end of the third handle is movably connected to the third connecting portion, and the third handle is connected to one end of the third connecting rod through a second rotating block. The other end of the third connecting rod passes through the third connecting portion and is connected to a connecting block group. The sliding structure includes a slide rail and a slider. The slide rail is provided on the base, and two opposite surfaces of the slider are respectively connected to the slide rail and the connecting block group.

[0015] Further, the connecting block group corresponds to the position of the fixing seat. A probe passing through the connecting block group is provided on the connecting block group, and the probe corresponds to the position of the earphone contact.

[0016] Further, the interior of the box body is a hollow structure, and a communication interface is provided in the hollow structure. The communication interface is connected to one end of the probe away from the earphone. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the capacitive in-ear detection device of the present invention;

[0019] Figure 2 It is a schematic structural diagram of the fixing unit of the present invention;

[0020] Figure 3 Structural schematic diagram of the base of the present utility model;

[0021] Figure 4 Structural schematic of the first unit of the present utility model Figure 1 ;

[0022] Figure 5 Structural schematic of the first unit of the present utility model Figure 2 ;

[0023] Figure 6 Structural schematic diagram of the pressing block of the present utility model;

[0024] Figure 7 Structural schematic diagram of the second unit of the present utility model;

[0025] Figure 8 Structural schematic diagram of the third unit of the present utility model.

[0026] In the figure: 1, box body; 11, hollow structure; 12, communication interface; 13, control module; 2, test component; 21, fixing unit; 211, base; 2111, first hollow part; 212, fixing seat; 2121, clamping groove; 21211, second hollow part; 22, first unit; 220, first handle; 221, first connecting rod; 222, first connecting plate; 223, counterweight block; 224, pressing block; 2241, accommodating space; 225, first connecting part; 226, second connecting plate; 227, first sliding rod group; 228, second sliding rod group; 229, limit switch; 23, second unit; 231, second handle; 232, second fixing plate; 233, second connecting rod; 234, second connecting part; 235, connecting block; 236, ejector rod; 237, first rotating block; 238, linear bearing; 24, third unit; 241, transmission mechanism; 2411, third handle; 2412, third connecting rod; 2413, third connecting part; 2414, second rotating block; 242, sliding structure; 2421, slide rail; 2422, slider; 243, base; 244, connecting block group; 245, probe; 3, first fixing plate. Detailed implementation manners

[0027] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation to the present utility model.

[0028] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and for simplification, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0030] A capacitive in-ear detection device, as Figure 1 shown, includes a box body 1 and a test component 2 provided on the box body 1. The test component 2 includes a fixing unit 21, a first unit 22, a second unit 23 and a third unit 24.

[0031] Specifically, as Figure 1 shown, the interior of the box body 1 is a hollow structure 11. A communication interface 12 and a control module 13 are provided in the hollow structure 11. One end of the probe 245 away from the earphone is connected to the communication interface 12, and the control module 13 is connected to the limit switch 229. The detection result of the earphone is uploaded to the remote terminal through the communication interface 12. The communication interface 12 is preferably a serial interface. The state of the limit switch 229 is detected by the control module 13 to obtain the relative position between the first connecting rod 221 and the limit switch 229, so that the remote terminal can obtain the state of the first handle 220 through the control module 13.

[0032] Specifically, as Figures 1 - 3As shown, the fixing unit 21 is provided on the box body 1. The fixing unit 21 is used to fix the earphone. The fixing unit 21 includes a base 211 and a fixing seat 212 provided on the base 211. The base 211 is provided with a first hollow portion 2111. The fixing seat 212 is provided with a clamping groove 2121. The clamping groove 2121 is used to fix the earphone. The clamping groove 2121 is provided with a second hollow portion 21211. The second hollow portion 21211 corresponds to the power-on button of the earphone and the first hollow portion 2111 in position. The material of the fixing seat 212 is conductive silica gel. The good conductivity of the conductive silica gel can more sensitively simulate the change of capacitance caused by the relative dielectric constant of the dielectric in the earplug state. After the earphone is pressed by the pressing block 224, a more stable RC oscillation sine wave will be obtained. The base 211 and the fixing seat 212 are combined to form a support frame. The clamping groove 2121 forms a wrapped fixation on the earphone body. The second hollow portion 21211 corresponds precisely to the first hollow portion 2111 and the power-on button of the earphone, so that the ejector rod 236 can pass through the second hollow portion 21211 and the first hollow portion 2111 in sequence to abut against the power-on button of the earphone.

[0033] Specifically, such as Figure 1 , Figure 4 , Figure 5 and Figure 6As shown in the figure, the first unit 22 is connected to the box body 1 through the first fixing plate 3. The first unit 22 is located above the fixing unit 21. The first unit 22 is used to press the earphone to simulate the human body environment when the earphone is inserted into the ear. The first unit 22 includes a first handle 220, a first connecting rod 221, a first connecting plate 222, two counterweight blocks 223 and a pressing block 224. One end of the first handle 220 is hinged to the first connecting portion 225, and the other end of the first handle 220 is connected to the first connecting rod 221. The surface of the first connecting portion 225 facing away from the first handle 220 is connected to the first fixing plate 3. Two limit switches 229 are arranged at intervals on the surface of the first fixing plate 3 facing away from the first connecting portion 225. The two limit switches 229 correspond to the position of the first connecting rod 221 to limit the moving range of the first connecting rod 221. The end of the first connecting rod 221 away from the first handle 220 is connected to the first connecting plate 222. Counterweight blocks 223 are arranged on the two opposite surfaces of the first connecting plate 222. One end of one counterweight block 223 facing the fixing seat 212 is connected to the pressing block 224. The pressing block 224 corresponds to the position of the fixing seat 212. The surface of the pressing block 224 facing away from the counterweight block 223 is concave to form a receiving space 2241. The receiving space 2241 is used to receive the earphone. The rigid connection between the first fixing plate 3 and the articulated first handle 220 forms a stable support system. With the inertial balance effect of the counterweight blocks 223, it effectively suppresses the mechanical vibration that may occur during the test and ensures the continuous stability of the pressure application. The mechanical linkage structure of the first handle 220 → the first connecting rod 221 → the first connecting plate 222 realizes a lever-type labor-saving operation. By using the limit switches 229 to limit the moving range of the first connecting rod 221, through the combination of the concave receiving space 2241 of the pressing block 224 and the counterweight blocks 223, the pressure distribution when the earphone is inserted into the ear can be accurately reproduced, ensuring that the test environment is consistent with the real wearing state and improving the reliability of the test data.

[0034] Specifically, at opposite ends of the first connecting plate 222, there are respectively a first sliding rod group 227 and a second sliding rod group 228. One end of the first sliding rod group 227 is connected to the first fixing plate 3, and the other end of the first sliding rod group 227 passes through the first connecting plate 222 and is connected to the box body 1. One end of the second sliding rod group 228 is connected to one of the counterweight blocks 223 through the second connecting plate 226, and the other end of the second sliding rod group 228 passes through the first connecting plate 222 and is connected to the counterweight block 223 facing the pressing block 224. The two ends of the first sliding rod group 227 are respectively connected to the first fixing plate 3 and the box body 1, forming a two-way support structure, which can effectively limit the displacement of the first connecting plate 222, reduce vibration transmission, and improve the overall rigidity. The second sliding rod group 228 is linked with the counterweight block 223 through the second connecting plate 226, and the end of the second sliding rod group 228 is directly connected to the counterweight block 223 on one side of the pressing block 224, which can ensure that the pressure is evenly transmitted along the axis of the sliding rod to the pressing block 224. The sliding characteristics of the sliding rod can also absorb shock energy and play a role in buffering and shock absorption. The combination of the two sliding rod groups and the counterweight block 223 can not only balance the inertial force but also offset the lateral torque through the symmetrical layout, significantly extending the service life of the first unit 22.

[0035] Specifically, as Figure 1 and Figure 7 、 Figure 8 shown, the second unit 23 and the third unit 24 are respectively arranged on opposite sides of the base 211. The second unit 23 is used to touch the earphone to change the state of the earphone. The second unit 23 includes a second handle 231, a second fixing plate 232, a second connecting rod 233, a second connecting portion 234, a connecting block 235 and a top rod 236. The second fixing plate 232 is connected to the box body 1, the second connecting portion 234 is connected to the second fixing plate 232, one end of the second handle 231 is rotatably connected to the second connecting portion 234, and the second handle 231 is movably connected to one end of the second connecting rod 233 through a first rotating block 237. The other end of the second connecting rod 233 passes through the top of the box body 1 and is connected to the connecting block 235. The end of the connecting block 235 far from the second connecting rod 233 is connected to the top rod 236. The position of the top rod 236 corresponds to that of the first hollow portion 2111. A linear bearing 238 is arranged between the second fixing plate 232 and the base 211. One end of the linear bearing 238 is connected to the connecting block 235, and the other end of the linear bearing 238 is arranged at the top of the box body 1. By pulling the second handle 231 to drive the second connecting rod 233, the connecting block 235 and the top rod 236 are driven, so that the top rod 236 passes through the first hollow portion 2111 and the second hollow portion 21211 respectively and abuts against the power-on button of the earphone. During the movement, the linear bearing 238 ensures that the connecting block 235 moves linearly, and the second fixing plate 232 makes the second unit 23 stably connected to the box body 1.

[0036] Specifically, as Figure 1 and Figure 8As shown in the figure, the third unit 24 is used to connect the earphone to collect the test data of the earphone. The third unit 24 includes a transmission mechanism 241 and a sliding structure 242 that are relatively arranged on the base 243. The transmission mechanism 241 includes a third handle 2411, a third connecting rod 2412, and a third connecting portion 2413. The third connecting portion 2413 is arranged on the base 243. One end of the third handle 2411 is hinged to the third connecting portion 2413, and the third handle 2411 is connected to one end of the third connecting rod 2412 through a second rotating block 2414. The other end of the third connecting rod 2412 passes through the third connecting portion 2413 and is connected to the connecting block 244. Through the linkage design of the third handle 2411, the third connecting rod 2412, and the third connecting portion 2413, the operator can manually pull the third handle 2411 to drive the third connecting rod 2412 to drive the connecting block 244 to move, realizing single-person operation without complex tools, improving the test efficiency. The hinge between the third handle 2411 and the third connecting portion 2413 can limit the movement range, avoid excessive pressing of the earphone by the probe 245, and protect the integrity of the product under test.

[0037] Specifically, the sliding structure 242 includes a slide rail 2421 and a slider 2422. The slide rail 2421 is arranged on the base 243. The two opposite sides of the slider 2422 are respectively connected to the slide rail 2421 and the connecting block 244. The position of the connecting block 244 corresponds to that of the fixed seat 212. A probe 245 passing through the connecting block 244 is arranged on the connecting block 244, and the position of the probe 245 corresponds to that of the earphone contact. With the cooperation of the slide rail 2421 and the slider 2422 structures, pulling the third handle 2411 drives the third connecting rod 2412 to drive the connecting block 244 to move, enabling the connecting block 244 to slide along a fixed track, avoiding deviation caused by manual operation, and ensuring the accurate alignment of the probe 245 with the earphone contact. The design of the probe 245 passing through the connecting block 244 can directly contact the earphone contact. Combining with the linear movement guided by the slide rail 2421, it reduces the contact friction between the probe 245 and the contact, ensures the stability and consistency of signal transmission, and avoids data errors caused by poor contact. The probe 245 is connected to the communication interface 12 to transmit the test data in real time without additional wiring, reducing the structural complexity.

[0038] The utility model can accurately simulate the physical states (such as pressure and fit) when the earphone is worn and contacts with the human ear through the pressing design of the first unit 22, ensuring that the test environment is close to the real human wearing scenario and improving the accuracy of the detection results. The second unit 23 can perform touch operations (such as single click, double click, long press, etc.) on the earphone to verify the response performance of the earphone under different interaction actions and ensure the reliability of the touch function. The third unit 24 collects key data such as the capacitance change, touch response time, and signal stability of the earphone in real time through the communication interface 12 and transmits them to the communication interface 12 and the remote terminal for analysis. By analyzing the test data, the defects of the capacitance sensing module of the earphone (such as insufficient sensitivity and accidental touch problems) can be quickly located, providing a direct basis for product design improvement. Each unit is independently installed on the box body 1, which is convenient for maintenance or upgrade and adapts to different earphone sizes and test requirements. In summary, through a highly simulated test environment, consistent process operations, and accurate data collection, the device avoids the inconsistency of manual operations, significantly improves the verification efficiency and reliability of the capacitive in-ear detection function of the earphone, and provides an effective tool for product performance optimization and quality control.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The above embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A capacitive in-ear detection device, characterized in that: It includes a box body and a test component provided on the box body. The test component includes a fixing unit, a first unit, a second unit and a third unit. The fixing unit is provided on the box body and is used to fix the earphone. The first unit is connected to the box body through a first fixing plate. The first unit is located above the fixing unit and is used to press the earphone to simulate the human environment when the earphone is inserted into the ear. The second unit and the third unit are respectively provided on opposite sides of the fixing unit. The second unit is used to touch the earphone to change the state of the earphone. The third unit is used to connect to the earphone to collect the test data of the earphone. The third unit is communicatively connected to the box body.

2. The capacitive in-ear detection device according to claim 1, wherein: The fixing unit includes a base and a fixing seat provided on the base. The base is provided with a first hollow part. The fixing seat is provided with a clamping groove for fixing the earphone. The clamping groove is provided with a second hollow part, and the second hollow part corresponds to the power-on button of the earphone and the first hollow part in position.

3. The capacitive in-ear detection device according to claim 2, wherein: The first unit includes a first handle, a first connecting rod, a first connecting plate, two counterweight blocks and a pressing block. Opposite ends of the first handle are respectively connected to a first connecting part and the first connecting rod. The surface of the first connecting part facing away from the first handle is connected to the first fixing plate. The end of the first connecting rod away from the first handle is connected to the first connecting plate. The counterweight blocks are respectively arranged on opposite sides of the first connecting plate. One end of one of the counterweight blocks facing the fixing seat is connected to the pressing block, and the pressing block corresponds to the fixing seat in position.

4. The capacitive in-ear detection device according to claim 3, wherein: First sliding rod groups and second sliding rod groups are respectively provided at opposite ends of the first connecting plate. One end of the first sliding rod group is connected to the first fixing plate, and the other end of the first sliding rod group passes through the first connecting plate and is connected to the box body. One end of the second sliding rod group is connected to one of the counterweight blocks through a second connecting plate, and the other end of the second sliding rod group passes through the first connecting plate and is connected to the counterweight block facing the pressing block.

5. The capacitive in-ear detection device according to claim 3, wherein: The surface of the pressing block facing away from the counterweight block is concavely formed with a receiving space for receiving the earphone.

6. The capacitive in-ear detection device according to claim 2, wherein: The second unit includes a second handle, a second fixing plate, a second connecting rod, a second connecting part, a connecting block and a top rod. The second fixing plate is connected to the box body. The second connecting part is connected to the second fixing plate. One end of the second handle is movably connected to the second connecting part, and the second handle is connected to one end of the second connecting rod through a first rotating block. The other end of the second connecting rod passes through the top of the box body and is connected to the connecting block. One end of the connecting block away from the second connecting rod is connected to the top rod, and the top rod corresponds to the first hollow part in position.

7. The capacitive in-ear detection device according to claim 6, wherein: A linear bearing is provided between the second fixing plate and the base. One end of the linear bearing is connected to the connecting block, and the other end of the linear bearing is provided at the top of the box body.

8. The capacitive in-ear detection device according to claim 2, wherein: The third unit includes a transmission mechanism and a sliding structure that are relatively arranged on the base. The transmission mechanism includes a third handle, a third connecting rod, and a third connecting portion. The third connecting portion is arranged on the base. One end of the third handle is movably connected to the third connecting portion, and the third handle is connected to one end of the third connecting rod through a second rotating block. The other end of the third connecting rod passes through the third connecting portion and is connected to a connecting block group. The sliding structure includes a slide rail and a slider. The slide rail is arranged on the base, and two opposite sides of the slider are respectively connected to the slide rail and the connecting block group.

9. The capacitive in-ear detection device according to claim 8, wherein: The connecting block group corresponds to the position of the fixed seat, and the connecting block group is provided with a probe of the connecting block group, and the probe corresponds to the position of the earphone contact.

10. The capacitive in-ear detection device according to claim 9, wherein: The interior of the box body is a hollow structure, and a communication interface is arranged in the hollow structure. The communication interface is connected to one end of the probe away from the earphone.

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