Sound guide tube connecting structure of hearing aid

Abstract

The utility model discloses a sound guide tube connecting structure of a hearing aid, which is used for connecting a hearing aid host and an ear die head, the sound guide tube connecting structure of the hearing aid comprises a sound guide tube, a host connector and an ear die head connector, one end of the sound guide tube is connected with the host connector, and the other end of the sound guide tube is connected with the ear die head connector; an external thread is arranged outside the sound guide tube connector of the hearing aid host; internal threads corresponding to the external threads are arranged in a host connecting port of the host connector, and the host connector is in threaded connection with the sound guide tube connector through the internal threads and the external threads; the ear die head is provided with a sound guide tube connector, a plurality of annular protrusions are arranged on the outer portion of the ear die head connector, and the annular protrusions are embedded in the sound guide tube connector in a clamped mode. According to the utility model, through improving the connection mode between the sound guide tube and the hearing aid host and between the sound guide tube and the hearing aid ear die head, the influence of the aging of the sound guide tube on the sealing performance of the connection part is improved, and the high-power output effect of the hearing aid is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hearing aid design and manufacturing, and particularly relates to a sound guide tube connection structure of a hearing aid. Background Art

[0002] A hearing aid is a device used to assist people with hearing impairments. Existing hearing aids can be divided into cassette type, behind-the-ear type, in-the-ear type, and completely-in-the-canal type according to different usage methods. Among them, the behind-the-ear hearing aid needs to be worn behind the ear during use. Considering the comfort of the user during wearing and the impact on the user's appearance, the behind-the-ear hearing aid is generally composed of small component parts to fit the shape of the human ear. During production and assembly, the various component parts are usually fixedly installed together, including the sound guide tube assembly connected to the hearing aid earhook.

[0003] The behind-the-ear hearing aid is generally composed of small component parts to adapt to the shape of the human ear. During production and assembly, the various component parts are usually fixedly installed together, including the sound guide tube assembly connected to the hearing aid main body and the hearing aid ear mold head. Currently, for the hearing aids circulating in the market, due to the differences among humans, they all need to be measured, cut, and assembled according to the actual situation of the end user, and production operators are required to have strong operating capabilities. At the same time, the material of the sound guide tube connecting the hearing aid main body and the hearing aid ear mold head is PVC. Therefore, after the sound guide tube is used for a period of time, problems such as aging and loosening will occur, resulting in a decrease in the sealing performance at the connection between the sound guide tube and the hearing aid main body and the ear mold head, generating gaps, and then whistling, which affects the user's experience and cannot meet the requirements of high-power output. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sound guide tube connection structure of a hearing aid, which can meet the requirements of high-power output of the hearing aid by improving the connection method at the connection between the sound guide tube and the hearing aid main body and the hearing aid ear mold head. To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a sound guide tube connection structure of a hearing aid for connecting a hearing aid main body and an ear mold head, including: a sound guide tube, a main body connection head, and an ear mold head connection head. One end of the sound guide tube is connected to the main body connection head, and the other end is connected to the ear mold head connection head, and the sound guide tube, the main body connection head, and the ear mold head connection head are formed as one body.

[0006] The hearing aid main body is provided with a sound guide tube connection head, and an external thread is arranged outside the sound guide tube connection head; the main body connection head is provided with a main body connection port, and an internal thread corresponding to the external thread is arranged inside the main body connection port, and the main body connection head and the sound guide tube connection head are threadedly connected through the internal thread and the external thread.

[0007] The ear mold head is provided with a sound guide tube connection port, and several annular protrusions are arranged outside the ear mold head connector, and the annular protrusions are clamped in the sound guide tube connection port.

[0008] Furthermore, the sound guide tube, the main unit connector and the ear mold head connector are integrally injection molded.

[0009] In some other embodiments, after the sound guide tube is connected to the main unit connector and the ear mold head connector, an encapsulation layer is wrapped outside.

[0010] Furthermore, an inclined surface is arranged on the annular protrusion and / or an inclined guiding surface is arranged at the end of the sound guide tube connection port, so as to facilitate the clamping of the annular protrusion in the sound guide tube connection port.

[0011] Furthermore, a sealing groove is arranged inside the external thread of the sound guide tube connector, and a sealing ring is installed in the sealing groove. After the main unit connector is threadedly connected to the sound guide tube connector, the end of the main unit connector is hermetically connected to the sealing ring.

[0012] Preferably, the sound guide tube is a flexible tube.

[0013] Furthermore, a positioning protrusion is arranged at the connection end of the main unit connector and the hearing aid main unit, and a positioning groove is arranged at the tail end of the hearing aid main unit. The positioning protrusion is inserted into the positioning groove to achieve positioning.

[0014] After adopting the above technical solution, the utility model has the following effects:

[0015] 1. The utility model forms the sound guide tube, the main unit connector and the ear mold head connector into one body, so that there is no assembly gap between the sound guide tube, the main unit connector and the ear mold head connector, improves the sealing performance at the connection between the sound guide tube, the hearing aid main unit and the hearing aid ear mold head, so that no whistling occurs at the connection between the three, and ensures high-power output.

[0016] 2. The utility model is provided with an ear mold head connector, and the ear mold head is tightly connected through the ear mold head connector, so as to prevent the ear mold head from falling into the ear canal.

[0017] 3. On the premise of ensuring high-power output of the hearing aid, the utility model improves the convenience of the end user. The user can select a sound guide tube with a length suitable for his own wearing, and it is fixedly installed on the hearing aid main unit through threaded connection of the main unit connector, and is convenient to install and use. Brief Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural diagram of the utility model installed on a hearing aid.

[0019] Figure 2 This is a three-dimensional structure diagram of the present utility model.

[0020] Figure 3 This is a schematic diagram of the connection between the sound guide tube and the hearing aid main body of the present utility model.

[0021] Figure 4 This is a partial explosion diagram of the present utility model.

[0022] Figure 5 This is a schematic diagram of the connection between the sound guide tube and the ear mold head of the present utility model.

[0023] Main component symbols:

[0024] 1: Hearing aid main body, 11: Sound guide tube connector, 12: External thread, 13: Sealing groove, 2: Sound guide tube, 3: Main body connector, 31: Main body connection port, 32: Internal thread, 33: Positioning protrusion, 4: Ear mold head connector, 41: Annular protrusion, 42: Inclined surface, 5: Ear mold head, 51: Sound guide tube connection port, 6: Sealing ring, 7: Positioning groove. Specific implementation manners

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] As Figure 1 and Figure 2 shown, the present utility model discloses a sound guide tube connection structure of a hearing aid for connecting a hearing aid main body 1 and an ear mold head 5. The sound guide tube connection structure of the hearing aid includes: a sound guide tube 2, a main body connector 3, and an ear mold head connector 4. One end of the sound guide tube 2 is connected to the main body connector 3, and the other end is connected to the ear mold head connector 4.

[0027] As Figure 2 and Figure 3 shown, the hearing aid main body 1 is provided with a sound guide tube connector 11, and an external thread 12 is provided outside the sound guide tube connector 11; the main body connector 3 is provided with a main body connection port 31, and an internal thread 32 corresponding to the external thread 12 is provided inside the main body connection port 31. The main body connector 3 and the sound guide tube connector 11 are threadedly connected through the internal thread 32 and the external thread 12.

[0028] As Figure 2 and Figure 5 shown, the ear mold head 5 is provided with a sound guide tube connection port 51, and a plurality of annular protrusions 41 are provided outside the ear mold head connector 4. The annular protrusions 41 are clamped in the sound guide tube connection port 51.

[0029] In this embodiment, the sound guide tube 2 is a flexible tube made of TPU material, and the main body connector 3 and the ear mold connector 4 are made of plastic material. After connecting the two ends of the sound guide tube 2 to the main body connector 3 and the ear mold connector 4 respectively, an overmolding layer (not shown in the figure) is coated on the outside. Through the overmolding layer, the sound guide tube 2, the main body connector 3 and the ear mold connector 4 are formed into one body.

[0030] In other embodiments, the sound guide tube 2, the main body connector 3 and the ear mold connector 4 can all be made of TPU material. The material hardness of the main body connector 3 and the ear mold connector 4 is greater than that of the sound guide tube 2. The sound guide tube 2, the main body connector 3 and the ear mold connector 4 are integrally injection molded through a mold.

[0031] The sound guide tube of the present utility model is made of TPU (thermoplastic polyurethane elastomer) material, which has excellent comprehensive properties such as high strength, high toughness, wear resistance, good elasticity, etc., good processing performance, and is not easy to age after long-term use.

[0032] In addition, as Figure 5 shown, in this embodiment, an inclined surface 42 is provided on the annular protrusion 41 to facilitate the annular protrusion 41 to be clamped in the sound guide tube connection port 51. In other embodiments, an inclined guiding surface is provided at the end of the sound guide tube connection port 51, or only an inclined guiding surface is provided at the end of the sound guide tube connection port 51 to facilitate the annular protrusion 41 to be clamped in the sound guide tube connection port 51.

[0033] As Figure 3 and Figure 4 shown, in this embodiment, a sealing groove 13 is provided inside the external thread 12 of the sound guide tube connector 11, and a sealing ring 6 is installed in the sealing groove 13. After the main body connector 3 is threadedly connected to the sound guide tube connector 11, the end of the main body connector 3 is hermetically connected to the sealing ring 6.

[0034] In addition, as Figure 2 and Figure 4 shown, in this embodiment, a positioning protrusion 33 is provided at the connection end of the main body connector 3 and the hearing aid main body 1, and a positioning groove 7 is provided at the tail end of the hearing aid main body. The positioning protrusion 33 is inserted into the positioning groove 7 to achieve positioning.

[0035] The above is only the preferred specific embodiment of the present utility model. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A sound guide tube connection structure for a hearing aid, used to connect a hearing aid host (1) and an ear mold head (5), characterized in that: include: A sound guide tube (2), a main unit connector (3), and an ear mold head connector (4), wherein one end of the sound guide tube (2) is connected to the main unit connector (3), and the other end is connected to the ear mold head connector (4), and the sound guide tube (2), the main unit connector (3), and the ear mold head connector (4) are integrally formed; The hearing aid host (1) is provided with a sound guide tube connector (11), and the sound guide tube connector (11) is provided with external threads (12) on the outside; the host connector (3) is provided with a host connection port (31), and the host connection port (31) is provided with internal threads (32) corresponding to the external threads (12); the host connector (3) and the sound guide tube connector (11) are threadedly connected via the internal threads (32) and the external threads (12); The ear mold head (5) is provided with a sound guide tube connection port (51), and the ear mold head connection head (4) is provided with a plurality of annular protrusions (41) on the outside, and the annular protrusions (41) are embedded in the sound guide tube connection port (51).

2. The sound guide tube connection structure of a hearing aid according to claim 1, characterized in that: The sound guide tube (2), the main unit connector (3), and the ear mold connector (4) are integrally injection molded.

3. The sound guide tube connection structure of a hearing aid according to claim 1, characterized in that: After the sound guide tube (2) is connected to the main unit connector (3) and the ear mold connector (4), the outside is coated with a rubber coating layer and is formed into a whole by the rubber coating layer.

4. The sound guide tube connection structure of a hearing aid according to claim 1, characterized in that: The annular protrusion (41) is provided with an inclined surface (42) or / and the end of the sound guide tube connection opening (51) is provided with an inclined guide surface, so that the annular protrusion (41) can be easily embedded in the sound guide tube connection opening (51).

5. The sound guide tube connection structure of a hearing aid according to claim 1, characterized in that: A sealing groove (13) is provided on the inner side of the external thread (12) of the sound guide tube connector (11), and a sealing ring (6) is installed in the sealing groove (13); after the host connector (3) is threadedly connected to the sound guide tube connector (11), the end of the host connector (3) is sealedly connected to the sealing ring (6).

6. The sound guide tube connection structure of a hearing aid according to claim 1, characterized in that: The sound-conducting tube (2) is a flexible tube.

7. The sound guide tube connection structure of a hearing aid as claimed in claim 6, characterized in that: The sound guide tube is made of TPU material, and the main unit connector (3) and the ear mold connector (4) are made of plastic material.

8. The sound guide tube connection structure of a hearing aid as claimed in claim 6, characterized in that: The sound guide tube, the main unit connector (3), and the ear mold connector (4) are all made of TPU material, and the material hardness of the main unit connector (3) and the ear mold connector (4) is greater than the material hardness of the sound guide tube (2).

9. The sound guide tube connection structure of a hearing aid according to claim 1, characterized in that: The connection end between the host connector (3) and the hearing aid host (1) is provided with a positioning protrusion (33), and the rear end of the hearing aid host is provided with a positioning groove (7), and the positioning protrusion (33) is inserted into the positioning groove (7) to achieve positioning.

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