Bone conduction product detection device

Abstract

The utility model relates to the technical field of bone conduction product testing, in particular to a bone conduction product detection device which comprises a base, the base is of a concave structure, and a detachable upper cover is installed on the top face of the base. A bone position structure is arranged on the inner bottom surface of the base, and a bone conduction signal collector is mounted in the bone position structure; a balance weight mechanism is arranged in the base and comprises a balance weight cantilever, a tooth-shaped protruding structure is arranged at the position, over the bone position structure, of the bottom of the balance weight cantilever and used for climbing and pulling an elastic rubber band, and a height adjusting assembly vertically and fixedly installed on the inner bottom face of the base is hinged to one end of the balance weight cantilever. A limiting base is fixedly arranged at the end, away from the height adjusting assembly, of the top face of the balance weight cantilever, and a balance weight is installed in the limiting base. According to the utility model, the transmission path of sound leakage can be structurally blocked through the matching arrangement of the upper cover and the base, and the sound leakage problem during the testing of bone conduction hearing-aid products is fundamentally solved.

Description

Technical Field

[0001] This utility model relates to the field of bone conduction product testing technology, specifically a bone conduction product testing device. Background Technology

[0002] In recent years, bone conduction products have become quite popular, including bone conduction headphones and bone conduction hearing aids. However, reliable testing solutions for bone conduction products are in urgent need.

[0003] Various bone conduction testing instruments commonly found on the market all have various shortcomings. In particular, testing solutions for bone conduction hearing aids all suffer from sound leakage problems. As is well known, once sound leakage occurs during the testing of a bone conduction hearing aid, it will be picked up by the microphone, amplified, and cause even greater leakage, resulting in feedback, making testing impossible. Utility Model Content

[0004] The purpose of this invention is to provide a bone conduction product testing device to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A bone conduction product testing device includes a base, the base having a recessed structure, and a detachable top cover mounted on the top surface of the base; both sides of the top cover have a top cover notch near the middle of the bottom end, and both sides of the base have a base notch near the middle of the top end that cooperates with the top cover notch.

[0007] A bone structure is provided on the inner bottom surface of the base, and a bone conduction signal acquisition device is installed in the bone structure.

[0008] The base is provided with a counterweight mechanism, which includes a counterweight cantilever. The bottom of the counterweight cantilever has a toothed protrusion structure located directly above the bone structure. The toothed protrusion structure is used to pull the elastic band. One end of the counterweight cantilever is hinged to a height adjustment component that is vertically fixed and installed on the bottom surface of the base.

[0009] A limit seat is fixedly installed on the top surface of the counterweight cantilever at the end away from the height adjustment component, and a counterweight is installed in the limit seat.

[0010] Furthermore, the height adjustment component includes a pin that is vertically fixedly installed on the inner bottom surface of the base, and a lifting block is slidably installed through the periphery of the pin. The end of the lifting block near the counterweight cantilever is hinged to the counterweight cantilever.

[0011] The lifting block has a through-threaded bolt on its side that abuts against the outer periphery of the pin.

[0012] Furthermore, a hook is fixedly installed on the top surface of the counterweight cantilever at the end away from the height adjustment component.

[0013] Furthermore, at least one of the tooth-shaped protrusion structures is present.

[0014] Furthermore, the assembly surfaces between the top cover and the base are provided with irregularly shaped structures, including one or a combination of a stepped structure, a human-shaped structure, and an arc-shaped structure.

[0015] Furthermore, it also includes a support mechanism for supporting the base, the support mechanism comprising a fixture support structure and a fixture base.

[0016] Furthermore, the fixture base includes a base tray, a base support arm is fixedly mounted on the top surface of the base tray, and a through groove is formed on the side of the base support arm along its height direction.

[0017] Furthermore, the fixture support structure includes a fixture support tray for supporting the base. A fixture support arm is fixedly installed on the bottom surface of the fixture support tray. The bottom end of the fixture support arm is slidably inserted into the base support arm. A plurality of threaded holes that cooperate with the through slot are arrayed on the side of the fixture support arm along its height direction.

[0018] Furthermore, it also includes a bone conduction signal amplifier electrically connected to the bone conduction signal acquisition device, the bone conduction signal amplifier being provided with an adjustable gain dial.

[0019] Furthermore, earpiece support arms are provided on both sides of the base.

[0020] The beneficial effects of this utility model are:

[0021] 1. In this utility model, the combination of the top cover and the base can structurally block the transmission path of sound leakage, fundamentally solving the sound leakage problem during the testing of bone conduction hearing aids.

[0022] 2. In this utility model, a tension gauge is used to hook the hook to verify the force applied to the earpiece by the counterweight cantilever and the counterweight weight; the force is adjusted by increasing or decreasing the weight; thereby, the applied force can be precisely controlled, the test data can be further quantified, and the accuracy of the test results can be improved. Attached Figure Description

[0023] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is an exploded three-dimensional schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the counterweight mechanism in this utility model;

[0026] Figure 3 This is a structural diagram illustrating the connection relationship between the upper cover and the base in this utility model;

[0027] Figure 4 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0028] Figure 5 This is a structural diagram showing the earpiece installation position relationship during testing according to this utility model;

[0029] Figure 6 This is a three-dimensional schematic diagram of the present invention with the top cover removed;

[0030] The reference numerals in the attached figures are as follows:

[0031] 1-Top cover; 11-Notch in top cover;

[0032] 2-Base; 21-Pin; 22-Lifting block; 23-Hook; 24-Counterweight; 25-Counterweight cantilever; 26-Toothed protrusion structure; 27-Base notch; 28-Earpiece support arm; 29-Earpiece auxiliary buckle;

[0033] 3- Fixture support structure; 31- Fixture support tray; 32- Fixture support arm;

[0034] 4-Bone conduction signal amplifier; 41-Bone conduction signal acquisition device;

[0035] 5- Fixture base; 51- Base support arm; 52- Base tray;

[0036] 6-Bone conduction products; 61-Hearing device. Detailed Implementation

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] Example 1:

[0039] Please see Figures 1-6In this embodiment of the utility model, a bone conduction product testing device includes a base 2, which has a recessed structure. A detachable top cover 1 is installed on the top surface of the base 2. The top cover 1 has a top cover notch 11 on both sides near the middle of the bottom end. The base 2 has a base notch 27 on both sides near the middle of the top end, which is used in conjunction with the top cover notch 11.

[0040] A bone structure is provided on the inner bottom surface of the base 2, and a bone conduction signal acquisition device 41 is installed in the bone structure;

[0041] The base 2 is provided with a counterweight mechanism, which includes a counterweight cantilever 25. The bottom of the counterweight cantilever 25 is provided with a toothed protrusion 26 located directly above the bone structure. The toothed protrusion 26 is used to pull the elastic band. One end of the counterweight cantilever 25 is hinged to a height adjustment component that is vertically fixed and installed on the bottom surface of the base 2.

[0042] A limit seat is fixedly installed on the top surface of the counterweight cantilever 25 at the end away from the height adjustment component, and a counterweight 24 is installed in the limit seat.

[0043] The height adjustment component includes a pin 21 that is vertically fixedly installed on the bottom surface of the base 2. A lifting block 22 is slidably installed through the periphery of the pin 21. The end of the lifting block 22 near the counterweight cantilever 25 is hinged to the counterweight cantilever 25.

[0044] The lifting block 22 has a through-threaded bolt on its side that abuts against the outer periphery of the pin 21. Loosening the bolt allows adjustment of the height of the lifting block 22; once the counterweight cantilever 25 is horizontal, tightening the bolt fixes the height of the lifting block 22, thus maintaining the horizontal position of the counterweight cantilever 25.

[0045] Among them, at least one tooth-shaped protrusion structure 26.

[0046] Among them, the assembly joint surfaces between the upper cover 1 and the base 2 are provided with irregular structures, including one or a combination of the following: a stepped structure, a human-shaped structure, and an arc-shaped structure.

[0047] This system also includes a bone conduction signal amplifier 4 electrically connected to the bone conduction signal acquisition unit 41. The bone conduction signal amplifier 4 is equipped with an adjustable gain knob. The bone conduction signal acquisition unit 41 and the bone conduction signal amplifier 4 are integrated. The bone conduction signal amplifier 4 drives the bone conduction signal acquisition unit 41, simultaneously acquiring and amplifying the signal from the bone conduction signal acquisition unit 41. This differs from installing the bone conduction signal acquisition unit 41 within a structural device and then connecting it to an external signal amplification instrument. This arrangement results in a shorter connecting cable between the bone conduction signal acquisition unit 41 and the bone conduction signal amplifier 4, avoiding electromagnetic interference from the environment. The adjustable gain knob allows for easy and intuitive online adjustment of the amplification gain of the bone conduction signal amplifier 4.

[0048] The base 2 has earpiece support arms 28 on both sides.

[0049] When using this utility model:

[0050] Open the device cover 1, remove the counterweight 24, and flip up the counterweight cantilever 25; then stretch the taut elastic band onto the toothed protrusion structure 26; next, install the bone conduction hearing aid product to be tested into the base 2, with the ear hook part of the product passing through the base notch 27, specifically as follows. Figure 4 As shown;

[0051] Then adjust the position of the bone conduction hearing aid so that the center of the surface of the earpiece under test is in contact with the bone conduction signal acquisition unit 41, and make the earpiece under test horizontal. Use materials such as sound-absorbing putty, foam, and EVA to help position the bone conduction hearing aid on the earpiece support arm 28. If necessary, the bone conduction hearing aid can be further positioned by earpiece auxiliary buckles. Then lower the counterweight cantilever 25 and install the counterweight weight 24 at the same time.

[0052] Then, adjust the height of the counterweight cantilever 25 using the height adjustment component to make the counterweight cantilever 25 horizontal. Next, check whether the suspended part in the middle of the elastic band is in contact with the bottom surface of the counterweight cantilever 25 under the gravity of the counterweight cantilever 25 and the counterweight 24. If there is contact, it means that the tension of the elastic band is insufficient and the tension of the elastic band needs to be tightened.

[0053] Finally, put the top cover 1 on and align the notch 11 of the top cover with the notch 27 of the base. If necessary, apply sound-absorbing mud evenly to the irregularly shaped structural surface where the assembly joint surfaces of the top cover 1 and the base 2 are opposite each other. Before testing, use sound-absorbing mud to block the gap formed by the notch 11 of the top cover and the notch 27 of the base. Then turn on the bone conduction hearing aid and the bone conduction signal amplifier 4 respectively, and connect the output of the bone conduction signal amplifier 4 to the instrument for testing.

[0054] Therefore, this utility model designs a bone conduction product testing device that can test various bone conduction headphone products currently on the market. It can also block the transmission path of sound leakage from the structural device, fundamentally solving the sound leakage problem during the testing of bone conduction hearing aid products.

[0055] Example 2:

[0056] Please see Figure 1 and Figure 2 Based on Example 1, a hook 23 is fixedly installed on the top surface of the counterweight cantilever 25 at the end away from the height adjustment component. A force gauge is used to hook the hook 23 to verify the force applied to the earpiece by the counterweight cantilever 25 and the counterweight 24; the force is adjusted by increasing or decreasing the weight; thus, the applied force can be precisely controlled, further quantifying the test data and improving the accuracy of the test results.

[0057] Example 3:

[0058] Please see Figure 1 and Figures 4-6 Based on embodiment 1, it also includes a support mechanism for the support base 2, which includes a fixture support structure 3 and a fixture base 5.

[0059] The fixture base 5 includes a base tray 52, on the top surface of which a base support arm 51 is fixedly installed, and the side of the base support arm 51 is provided with a through groove along its height direction.

[0060] The fixture support structure 3 includes a fixture support tray 31 for supporting the base 2. A fixture support arm 32 is fixedly installed on the bottom surface of the fixture support tray 31. The bottom end of the fixture support arm 32 is slidably inserted into the base support arm 51. The side of the fixture support arm 32 is provided with a plurality of threaded holes that cooperate with the through slot along its height direction.

[0061] The working height of the support mechanism is adjustable by setting up the jig support structure 3 and the jig base 5. During the process, check whether the bone conduction hearing aid product interferes with the jig base. If there is interference, the total height of the jig support arm 32 and the base support arm 51 can be adjusted to facilitate the installation work.

[0062] Example 4:

[0063] Please see Figure 6 This embodiment is a simplification based on Embodiment 1, removing the top cover 1. The application scenario is testing bone conduction headphone products.

[0064] When testing bone conduction headphones, the audio source from the bone conduction earpiece does not originate from the product's own microphone, but rather from a Bluetooth host device with which it has established a Bluetooth connection. The Bluetooth host device transmits the audio source to the bone conduction headphones via Bluetooth. Therefore, the testing process will not cause feedback. Furthermore, sound leakage from the bone conduction earpiece will not affect the testing process.

[0065] Another application scenario of this embodiment is testing low-gain bone conduction hearing aids.

[0066] The primary cause of feedback during bone conduction hearing aid testing is sound leakage, followed by the product's gain; higher gain increases the likelihood of feedback. Finally, some intelligent bone conduction hearing aids have built-in DSP designs with active or passive feedback suppression algorithms, which can partially or completely suppress feedback. When sound leakage from the bone conduction earpiece does not cause feedback, the top cover can be removed.

[0067] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A bone conduction product testing device, characterized in that, Includes a base (2), which has a recessed structure, and a detachable top cover (1) is installed on the top surface of the base (2); the top cover (1) has a top cover notch (11) on both sides near the middle of the bottom end, and the base (2) has a base notch (27) on both sides near the middle of the top end that cooperates with the top cover notch (11). A bone structure is provided on the inner bottom surface of the base (2), and a bone conduction signal acquisition device (41) is installed in the bone structure. The base (2) is provided with a counterweight mechanism, which includes a counterweight cantilever (25). The bottom of the counterweight cantilever (25) is provided with a toothed protrusion (26) located directly above the bone structure. The toothed protrusion (26) is used to pull the elastic band. One end of the counterweight cantilever (25) is hinged to a height adjustment component that is vertically fixed and installed on the bottom surface of the base (2). A limit seat is fixedly provided on the top surface of the counterweight cantilever (25) at the end away from the height adjustment component, and a counterweight (24) is installed in the limit seat.

2. The bone conduction product testing device according to claim 1, characterized in that, The height adjustment assembly includes a pin (21) that is vertically fixedly installed on the inner bottom surface of the base (2). A lifting block (22) is slidably installed through the periphery of the pin (21). The lifting block (22) is hinged to the counterweight cantilever (25) at one end near the counterweight cantilever (25). The side of the lifting block (22) is threaded with a bolt that abuts against the periphery of the pin (21).

3. The bone conduction product testing device according to claim 1, characterized in that, A hook (23) is fixedly installed on the top surface of the counterweight cantilever (25) at the end away from the height adjustment component.

4. The bone conduction product testing device according to claim 1, characterized in that, At least one of the toothed protrusion structures (26).

5. The bone conduction product testing device according to claim 1, characterized in that, The assembly surfaces between the top cover (1) and the base (2) are provided with irregularly shaped structures, including one or a combination of a stepped structure, a human-shaped structure, and an arc-shaped structure.

6. The bone conduction product testing device according to claim 1, characterized in that, It also includes a support mechanism for supporting the base (2), the support mechanism including a fixture support structure (3) and a fixture base (5).

7. A bone conduction product testing device according to claim 6, characterized in that, The fixture base (5) includes a base tray (52), and a base support arm (51) is fixedly installed on the top surface of the base tray (52). A through groove is provided on the side of the base support arm (51) along its height direction.

8. A bone conduction product testing device according to claim 7, characterized in that, The fixture support structure (3) includes a fixture support tray (31) for supporting the base (2). A fixture support arm (32) is fixedly installed on the bottom surface of the fixture support tray (31). The bottom end of the fixture support arm (32) is slidably inserted into the base support arm (51). The side of the fixture support arm (32) is provided with a plurality of threaded holes that cooperate with the through slot along its height direction.

9. A bone conduction product testing device according to claim 1, characterized in that, It also includes a bone conduction signal amplifier (4) electrically connected to the bone conduction signal acquisition unit (41), the bone conduction signal amplifier (4) being provided with an adjustable gain dial.

10. A bone conduction product testing device according to claim 1, characterized in that, Both sides of the base (2) are provided with earpiece support arms (28).

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