Earphone sealing performance detection device

Abstract

The utility model relates to the technical field of earphone testing, and specifically discloses an earphone sealing performance detection device comprising an earphone tool provided with a positioning groove used for placing an earphone; the groove bottom of the positioning groove is provided with a sound transmission hole which penetrates through the earphone jig downwards. The hole sealing mechanism is located at the side face position of the earphone jig and used for sealing a pickup hole in the side face position of the earphone; the sound production mechanism is positioned below the earphone jig and is used for playing test sound to the sound transmission hole; and the testing device is electrically connected with the earphone and is used for acquiring a changing electric signal generated by the earphone due to the fact that the earphone receives the testing sound. According to the earphone sealing performance detection device provided by the utility model, the air tightness detection of the earphone can be completed without using an air compressor, and the problems of large equipment size and high operation noise caused by using the air compressor to carry out the air tightness detection in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of earphone testing, in particular to an earphone sealing performance detection device. Background Art

[0002] In modern headphone production, airtightness is a key quality indicator. The quality of headphone airtightness directly impacts the user's listening experience. Poor airtightness can lead to sound leakage, affecting sound quality and reducing user satisfaction. Consequently, headphone manufacturers are placing increasing emphasis on airtightness testing.

[0003] Existing methods for testing the tightness of headphones require using an air compressor to blow high-pressure air into the headphones, and then determine whether the airtightness is qualified by observing the leakage of the headphones. Air compressors are large in size and noisy when running.

[0004] Therefore, the present invention is devoted to developing an earphone sealing performance detection device to solve the problem that the existing technology requires the use of an air compressor for air tightness detection, resulting in a large device size and high operating noise.

[0005] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Utility Model Content

[0006] One purpose of the utility model is to provide an earphone sealing performance detection device, which can effectively solve the problem that the existing technology requires the use of an air compressor for air tightness detection, resulting in a large device size and high operating noise.

[0007] To achieve the above objectives, the present invention provides an earphone sealing performance detection device, comprising:

[0008] An earphone jig, the earphone jig having a positioning groove for placing an earphone; wherein the bottom of the positioning groove is provided with a sound-transmitting hole extending downward through the earphone jig;

[0009] A sealing mechanism, located on the side of the earphone fixture, for sealing the sound pickup hole on the side of the earphone;

[0010] a sound-generating mechanism, located below the earphone fixture and configured to play a test sound toward the sound-transmitting hole;

[0011] A testing device is electrically connected to the earphone and is used to obtain a changing electrical signal generated by the earphone due to receiving the test sound.

[0012] Optionally, the headphone jig includes a jig base plate, and a contoured jig provided with the positioning groove and detachably mounted above the jig base plate.

[0013] Optionally, the sound-generating mechanism is located below the jig bottom plate.

[0014] Optionally, a groove wall and / or groove bottom of the positioning groove is covered with a flexible pad for covering the sound outlet hole at a position corresponding to the sound outlet hole of the earphone.

[0015] Optionally, a downward pressing mechanism is provided on the top of the earphone fixture.

[0016] The pressing mechanism is used to press the earphone downward so that the earphone is tightly against the flexible pad.

[0017] Optionally, the sealing mechanism and the pressing mechanism both include a flexible block and a telescopic cylinder for driving the flexible block to move closer to or away from the earphone.

[0018] Optionally, the flexible pad is a rubber pad or a silicone pad.

[0019] Optionally, there are two profiling jigs.

[0020] Optionally, each of the profiling jigs is provided with two corresponding sealing mechanisms, and the profiling jig is located between the corresponding two sealing mechanisms;

[0021] The number of the pressing mechanism is one, and the pressing mechanism includes two flexible pads arranged in a one-to-one correspondence with the two profiling jigs, and the two flexible pads of the pressing mechanism are connected to the driving end of the telescopic cylinder of the pressing mechanism through a T-shaped connecting plate.

[0022] Optionally, the jig base plate and the contoured jig are magnetically connected.

[0023] The beneficial effects of the present invention are: providing a device for testing the sealing performance of earphones. When testing, after placing the earphones in the positioning slots, the sealing mechanism extends forward and blocks the sound pickup hole on the side of the earphones. Then, the sound-generating mechanism plays a test sound to the sound-transmitting hole. Since the sound pickup hole is blocked, if the airtightness of the earphones is good, the microphone inside the earphones will have difficulty receiving the test sound, so the earphones will not generate obvious changing electrical signals, and the testing device will not detect the existence of the changing electrical signals. Conversely, if the airtightness of the earphones is poor, the test sound can be transmitted to the inside of the earphones through the location with poor airtightness, so the earphones will generate obvious changing electrical signals, which will be detected by the testing device. Therefore, the testing device can determine whether the airtightness of the earphones is good by the generation of the changing electrical signals.

[0024] Therefore, the earphone sealing performance detection device provided in this embodiment can complete the air tightness detection of the earphone without using large equipment such as an air compressor, thereby effectively solving the problem that the existing technology requires the use of an air compressor for air tightness detection, resulting in large equipment size and high operating noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic structural diagram of an earphone sealing performance detection device provided in an embodiment;

[0027] Figure 2 A side view of a device for detecting the sealing performance of an earphone provided in an embodiment.

[0028] In the picture:

[0029] 1. Headphone jig; 101. Jig bottom plate; 102. Copying jig; 1021. Positioning slot;

[0030] 2a, sealing mechanism; 2b, pressing mechanism; 201, flexible block; 202, telescopic cylinder; 203, T-shaped connecting plate;

[0031] 3. Sound-producing mechanism. DETAILED DESCRIPTION

[0032] References to "embodiments" in this utility model mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the utility model. The appearance of the term "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or relevance to other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the various embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0033] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. The use of relevant terms herein is only for describing specific embodiments and is not intended to limit the present invention.

[0034] In the description of this utility model, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0035] In the present invention, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0036] Without further restrictions, in the present invention, the words "include", "comprise", "have" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0037] Consistent with the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple," such as "multiple groups" and "multiple times," are also understood in this manner, unless otherwise specifically defined.

[0038] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present invention.

[0039] Unless otherwise expressly specified or limited, in the description of the embodiments of the present invention, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the technical field of the present invention, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0040] See also Figure 1 and Figure 2 The present invention provides an earphone sealing performance testing device, comprising an earphone jig 1, a sealing mechanism 2a, a sound-generating mechanism 3, and a testing device. The earphone jig 1 is provided with a positioning groove 1021 for placing the earphone; wherein, the bottom of the positioning groove 1021 is provided with a sound-transmitting hole that passes downward through the earphone jig 1; the sealing mechanism 2a is located at the side of the earphone jig 1 and is used to block the sound pickup hole at the side of the earphone; the sound-generating mechanism 3 is located below the earphone jig 1 and is used to play a test sound into the sound-transmitting hole; the testing device is electrically connected to the earphone and is used to obtain a changing electrical signal generated by the earphone due to receiving the test sound.

[0041] Optionally, a detection probe is provided at a position of the positioning groove 1021 corresponding to the test interface of the earphone, and the test device is electrically connected to the detection probe through a wire. Therefore, after the earphone is placed in the positioning groove 1021, the test device can be electrically connected to the earphone.

[0042] Specifically, when conducting the test, after the earphone is placed in the positioning groove 1021, the sealing mechanism 2a extends forward and blocks the sound pickup hole on the side of the earphone. Then, the sound-generating mechanism 3 plays the test sound to the sound-transmitting hole. Since the sound pickup hole is blocked, if the airtightness of the earphone is good, the microphone inside the earphone will have difficulty receiving the test sound, so the earphone will not generate an obvious changing electrical signal, and the test device will not detect the existence of the changing electrical signal. On the contrary, if the airtightness of the earphone is poor, the test sound can be transmitted to the inside of the earphone through the position with poor airtightness, so the earphone will generate an obvious changing electrical signal, which will be detected by the test device. Therefore, the test device can judge whether the airtightness of the earphone is good by the generation of the changing electrical signal.

[0043] Therefore, the earphone sealing performance detection device provided in this embodiment can complete the air tightness detection of the earphone without using large equipment such as an air compressor, thereby effectively solving the problem that the existing technology requires the use of an air compressor for air tightness detection, resulting in large equipment size and high operating noise.

[0044] The sound-generating mechanism 3 may be a speaker or a buzzer.

[0045] The headphone jig 1 includes a jig base 101 and a contour jig 102, which is provided with the positioning slot 1021 and is removably mounted above the jig base 101. The sound-generating mechanism 3 is located below the jig base 101. For example, the jig base 101 and contour jig 102 are magnetically connected for quick positioning. The contour jig 102 is detachable, so when testing different models of headphones, only the contour jig 102 needs to be replaced, and the jig base 101 can be reused.

[0046] A flexible pad for covering the sound hole is attached to the groove wall and / or groove bottom of the positioning groove 1021 at a position corresponding to the sound hole of the earphone. Optionally, the flexible pad is a rubber pad or a silicone pad.

[0047] A pressing mechanism 2b is provided above the earphone fixture 1, and the pressing mechanism 2b is used to press the earphone downward so that the earphone is tightly against the flexible pad.

[0048] Optionally, both the sealing mechanism 2a and the downward pressing mechanism 2b include a flexible block 201 and a retractable cylinder 202 that drives the flexible block 201 toward or away from the earphone. For example, the flexible block 201 may be a rubber or silicone block. Extending the retractable cylinder 202 forwards drives the corresponding flexible block 201 toward the earphone, thereby sealing the sound pickup hole or pressing the earphone downward.

[0049] In this embodiment, there are two profiling jigs 102. The double-station setting is beneficial to improving the testing efficiency.

[0050] Optionally, two sealing mechanisms 2a are provided for each profiling jig 102, with the profiling jig 102 located between the two corresponding sealing mechanisms 2a. The two sealing mechanisms 2a apply pressure to the profiling jig 102 in the middle simultaneously to prevent the profiling jig 102 from being damaged and separated from the jig base 101 due to uneven pressure applied by a single sealing mechanism 2a.

[0051] The pressing mechanism 2b is provided in one piece and includes two flexible pads corresponding to the two profiling jigs 102. The two flexible pads are connected to the drive end of the telescopic cylinder 202 of the pressing mechanism 2b via a T-shaped connecting plate 203. Using a single telescopic cylinder 202, the two earphones can be pressed together, saving equipment costs.

[0052] In summary, the earphone sealing performance detection device provided in this embodiment has the following advantages:

[0053] ① Reduce equipment size: This device does not require the use of large equipment such as air compressors, which reduces the size and complexity of the equipment and facilitates installation and transportation.

[0054] ② Reduce noise: Since no air compressor is required, the device generates less noise during operation, which improves the working environment.

[0055] ③ Strong flexibility: By replacing the profiling fixture 102, the device can adapt to the testing requirements of different types of headphones and has good flexibility.

[0056] ④ High precision: This device determines the air tightness by detecting the changing electrical signals generated after the earphone receives the test sound, and can accurately detect the sealing performance of the earphone.

[0057] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A device for detecting the sealing performance of earphones, characterized in that: include: An earphone jig (1), the earphone jig (1) being provided with a positioning groove (1021) for placing an earphone; wherein a sound-transmitting hole is provided at the bottom of the positioning groove (1021) and extends downward through the earphone jig (1); A sealing mechanism (2a), the sealing mechanism (2a) being located on the side of the earphone fixture (1) and being used to seal the sound pickup hole on the side of the earphone; A sound-generating mechanism (3), the sound-generating mechanism (3) being located below the earphone fixture (1) and being used to play a test sound toward the sound-transmitting hole; A testing device is electrically connected to the earphone and is used to obtain a changing electrical signal generated by the earphone due to receiving the test sound.

2. The earphone sealing performance detection device according to claim 1, characterized in that: The earphone jig (1) comprises a jig base plate (101) and a contoured jig (102) provided with the positioning groove (1021) and detachably mounted above the jig base plate (101).

3. The earphone sealing performance detection device according to claim 2, characterized in that: The sound-generating mechanism (3) is located below the jig bottom plate (101).

4. The earphone sealing performance detection device according to claim 2, characterized in that: The groove wall and / or groove bottom of the positioning groove (1021) are covered with a flexible pad for covering the sound outlet hole at a position corresponding to the sound outlet hole of the earphone.

5. The earphone sealing performance detection device according to claim 4, characterized in that: A downward pressing mechanism (2b) is provided above the earphone fixture (1). The pressing mechanism (2b) is used to press the earphone downwards so that the earphone is tightly attached to the flexible pad.

6. The earphone sealing performance detection device according to claim 5, characterized in that: The sealing mechanism (2a) and the pressing mechanism (2b) both comprise a flexible block (201) and a telescopic cylinder (202) for driving the flexible block (201) toward or away from the earphone.

7. The earphone sealing performance detection device according to claim 6, characterized in that: The flexible pad is a rubber pad or a silicone pad.

8. The earphone sealing performance detection device according to claim 6, characterized in that: The number of the profiling jigs (102) is two.

9. The earphone sealing performance detection device according to claim 8, characterized in that: Each of the profiling jigs (102) is provided with two corresponding sealing mechanisms (2a), and the profiling jig (102) is located between the two corresponding sealing mechanisms (2a); The number of the pressing mechanism (2b) is one, and the pressing mechanism (2b) comprises two flexible pads arranged in a one-to-one correspondence with the two profiling jigs (102), and the two flexible pads of the pressing mechanism (2b) are connected to the driving end of the telescopic cylinder (202) of the pressing mechanism (2b) via a T-shaped connecting plate (203).

10. The earphone sealing performance detection device according to claim 2, characterized in that: The jig base plate (101) and the contoured jig (102) are connected by magnetic attraction.

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