A housing for a moving iron sound emitting unit and a housing assembly

Abstract

This utility model relates to a housing and housing assembly for a moving iron sound-generating unit. The housing includes a front portion, a top portion, a bottom portion, and two side portions adjacent to the front portion. The front portion of the housing has a sound outlet. The top portion of the housing, near the sound outlet, has an outwardly protruding protrusion. The interior of the protrusion forms an auxiliary cavity that communicates with both the inner cavity of the housing and the sound outlet. The protrusion increases the volume of the cavity on the sound outlet side. This housing design allows the frequency range of the sound emitted from the sound outlet to be closer to the frequency range of human speech, resulting in very high speech recognition clarity when the user wears this receiver.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing moving iron sound generating units, and in particular to the housing and housing components of moving iron sound generating units. Background Technology

[0002] A balanced armature driver unit typically consists of a housing containing a balanced armature driver assembly, which includes components such as a coil, magnet, reed, and diaphragm. The balanced armature driver assembly is connected to a solder pad at the rear of the housing via wires. The various components of a balanced armature driver unit are typically connected by soldering or bonding. The housing generally includes a front section, a top and bottom section adjacent to the front, and two sides. The front section of the housing has a sound outlet, and the overall shape of the housing is cubic. The sound produced by the driver assembly is emitted from this sound outlet.

[0003] Existing balanced armature drivers are generally used in the receivers of hearing aids. The receiver is placed inside the ear canal to transmit sound. However, existing receivers have the following drawbacks: the frequency range of the sound emitted from the output port deviates somewhat from the frequency range of human speech, resulting in insufficient clarity of speech recognition when the user wears such a receiver. Utility Model Content

[0004] Based on this, a housing for a moving iron sound-generating unit is provided. This housing helps to make the frequency range of the sound emitted from the sound outlet closer to the frequency range of human speech.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A housing for a moving iron sound-generating unit includes a front portion, a top portion, a bottom portion, and two side portions adjacent to the front portion. The front portion of the housing is provided with a sound outlet, and the top portion of the housing is provided with an outwardly protruding protrusion. The interior of the protrusion forms an auxiliary cavity that communicates with the inner cavity of the housing and with the sound outlet. The length of the protrusion is 1 / 3 to 1 / 2 of the length of the housing, the height of the protrusion ranges from 0.2 to 0.5 mm, and the width of the protrusion ranges from 1.5 to 3.5 mm.

[0007] In one embodiment, an auxiliary hole is provided on one side of the housing or on both sides of the housing, and the auxiliary hole communicates with the inner cavity of the housing.

[0008] In one embodiment, an auxiliary hole is provided at the bottom of the housing, and the auxiliary hole communicates with the inner cavity of the housing.

[0009] In one embodiment, the number of auxiliary holes is one or more, and the shape of the auxiliary holes is circular, elliptical or rectangular.

[0010] In one embodiment, the area of ​​the auxiliary hole is 2 mm. 2 above.

[0011] In one embodiment, the protrusion includes a flat plate segment and an annular segment connected to the flat plate segment.

[0012] In one embodiment, the number of protrusions is one or more.

[0013] In one embodiment, the protrusion is located on the side of the housing near the sound outlet.

[0014] The housing assembly includes the housing of the moving iron sound-generating unit, the housing being disposed within a metal outer shell, the metal outer shell comprising an upper metal shell and a lower metal shell, the upper metal shell and the lower metal shell being welded together.

[0015] In one embodiment, a tail end pipeline is also included, the tail end pipeline including a first snap-fit ​​portion, and the tail end of the metal casing is provided with a first positioning hole, the first snap-fit ​​portion of the tail end pipeline snapping into the first positioning hole.

[0016] In one embodiment, the device further includes a sound guide tube, one end of which is provided with a second snap-fit ​​portion, and the front end of the metal casing is provided with a second positioning hole, wherein the second snap-fit ​​portion of the sound guide tube snaps into the second positioning hole.

[0017] The beneficial effects of this application are as follows:

[0018] 1. A protruding section is provided on the top of the housing near the sound outlet. The interior of the protrusion forms an auxiliary cavity that communicates with both the inner cavity of the housing and the sound outlet. The protrusion increases the volume of the cavity on the sound outlet side. This housing design helps to make the frequency range of the sound emitted from the sound outlet closer to the frequency range of human speech, resulting in very high speech recognition clarity when the user wears this receiver. Moreover, the protrusion occupies little space and does not significantly increase the overall size of the housing, allowing for a smaller receiver while improving speech recognition clarity.

[0019] 2. This application also provides auxiliary holes on the housing, which can increase the sound pressure output of less than 200Hz by more than 2-3dB, which can better meet the needs of hearing-impaired patients with this part of hearing loss.

[0020] 3. The first snap-fit ​​part of the tail end pipeline snaps into the first positioning hole, which helps to enhance the reliability of the connection between the pipeline and the metal shell.

[0021] 4. The second snap-fit ​​part of the sound guide tube snaps into the second positioning hole, which helps to enhance the reliability of the connection between the sound guide tube and the metal shell. Attached Figure Description

[0022] Figure 1 This is a perspective view of the housing assembly of an embodiment of this application.

[0023] Figure 2 This is an exploded view of the housing assembly of an embodiment of this application.

[0024] Figure 3 This is a perspective view of the housing of the moving iron sound-generating unit according to an embodiment of this application.

[0025] Figure 4 This is a top view of the housing of the moving iron sound-generating unit according to an embodiment of this application.

[0026] Figure 5 This is an exploded view of the housing of the moving iron sound-generating unit according to an embodiment of this application, wherein no auxiliary holes are provided on the housing.

[0027] Figure 6 This is an exploded view of the housing of the moving iron sound-generating unit according to an embodiment of this application, wherein an auxiliary hole is provided at the bottom of the housing.

[0028] Figure 7 This is an exploded view of the housing of the moving iron sound-generating unit according to an embodiment of this application, wherein auxiliary holes are provided on the side of the housing.

[0029] Figure 8 This is a schematic diagram of the sound guide tube according to an embodiment of this application.

[0030] Figure 9 This is a schematic diagram of the tail end pipeline of an embodiment of this application.

[0031] Figure 10 This is a schematic diagram showing that the tail end of the metal casing of an embodiment of this application is provided with a first positioning hole.

[0032] Figure 11 This is a schematic diagram showing that the front end of the metal casing of an embodiment of this application is provided with a second positioning hole.

[0033] Figure 12 A graph showing a comparative test conducted on the housing using an embodiment of this application.

[0034] in:

[0035] 100. Shell; 200. Metal outer shell; 201. Metal upper shell; 202. Metal lower shell; 300. Tail end pipeline; 400. Sound guide tube; 303. Annular groove; 401. Annular groove; 1001. Inner cavity;

[0036] 101. Top; 102. Front; 103. Side; 104. Protrusion; 105. Auxiliary hole; 106. Solder pad; 107. Cover plate; 108. Lower shell; 1041. Auxiliary cavity; 109. Sound outlet; 110. Auxiliary hole;

[0037] 301. First block; 302. Second block;

[0038] 203, First positioning hole; 204, Second positioning hole. Detailed Implementation

[0039] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0040] like Figures 1 to 3 As shown, the first embodiment of this application provides a housing 100 for a moving iron sound-generating unit. The housing 100 includes a front portion 102, a top portion 101 adjacent to the front portion 102, a bottom portion, and two side portions 103. The front portion 102 of the housing 100 is provided with a sound outlet 109. The top portion 101 of the housing 100 near the sound outlet 109 is provided with an outwardly protruding protrusion 104. The interior of the protrusion 104 forms an auxiliary cavity 1041 that communicates with the inner cavity 1001 of the housing 100 and with the sound outlet 109. The length of the protrusion 104 is 1 / 3 to 1 / 2 of the length of the housing, the height of the protrusion 104 ranges from 0.2 to 0.5 mm, and the width of the protrusion 104 ranges from 1.5 to 3.5 mm. For example, the length of the protrusion 104 is 1 / 2 of the length of the housing, the height is 0.3 mm, and the width is 2 mm.

[0041] Specifically, the protrusion 104 can also be located at the center of the top of the housing.

[0042] Specifically, such as Figure 3 As shown, the housing 100 includes a cover plate 107 and a lower housing 108 with an opening. The lower housing 108 includes an annular sidewall and a bottom plate. The cover plate 107 covers the opening of the lower housing 108, enclosing the moving iron sound-generating assembly placed inside the lower housing 108. A protrusion 104 is provided on the cover plate 107, extending from one end of the cover plate 107 to approximately the middle position of the cover plate 107. The sound outlet 109 is located above the sidewall at the front end of the lower housing.

[0043] In one embodiment, an auxiliary hole 105 is provided on one side 103 of the housing 100 or both sides 103 of the housing 100 are provided with auxiliary holes 105, and the auxiliary holes 105 communicate with the inner cavity 1001 of the housing 100.

[0044] Specifically, such as Figure 3As shown, an auxiliary hole 105 is provided on one side 103 of the housing 100. The auxiliary hole 105 is rectangular in shape and communicates with the inner cavity 1001 of the housing 100.

[0045] Specifically, such as Figure 7 As shown, auxiliary holes 105 are provided on both sides 103 of the housing. The auxiliary holes 105 are rectangular in shape and each auxiliary hole 105 is connected to the inner cavity 1001 of the housing 100.

[0046] In one implementation, such as Figure 6 As shown, an auxiliary hole 110 is provided at the bottom of the housing 100, and the auxiliary hole 110 communicates with the inner cavity 1001 of the housing 100.

[0047] Specifically, such as Figure 6 As shown, an auxiliary hole 110 is provided at the bottom of the housing 100. The auxiliary hole 110 can be circular, elliptical, or even rectangular. The auxiliary hole 110 communicates with the inner cavity 1001 of the housing 100.

[0048] In one embodiment, the number of auxiliary holes 110 is one or more, and the shape of the auxiliary holes 110 is circular, elliptical or rectangular.

[0049] In one embodiment, the area of ​​the auxiliary hole 110 is 2 mm. 2 The above. For example, the area of ​​auxiliary hole 110 is 2mm. 2 2.5mm 2 3.5mm 2 wait.

[0050] In one implementation, such as Figure 3 As shown, the protrusion 104 includes a flat plate segment and an annular segment connected to the flat plate segment.

[0051] Specifically, the top surface of the protrusion 104 is a plane, and the sides that are in contact with the top surface are curved or inclined surfaces, etc.

[0052] In one embodiment, the number of protrusions 104 is one or more. For example, the number of protrusions 104 is one, two, or other numbers.

[0053] Specifically, when the housing has only one protrusion 104, the height of the protrusion 104 should be controlled as much as possible while meeting the performance requirements, so that the protrusion 104 is not too high. The other parts of the top of the housing are flat, so that the overall size of the housing can be smaller, which makes it easier to miniaturize the moving iron sound unit.

[0054] A second embodiment of this application also provides a housing assembly, such as Figure 1 and Figure 2 As shown, the housing assembly includes the housing 100 of the moving iron sound-generating unit. The housing 100 is disposed inside the metal outer shell 200. The metal outer shell 200 includes an upper metal shell 201 and a lower metal shell 202, which are welded together.

[0055] Specifically, the metal casing 200 may be made of materials such as 304 / 306 stainless steel or titanium alloy.

[0056] In one implementation, such as Figure 1 , Figure 9 and Figure 10 As shown, it also includes a tail end pipeline 300, which includes a first snap-fit ​​portion. The tail end of the metal housing 200 is provided with a first positioning hole 203, and the first snap-fit ​​portion of the tail end pipeline 300 is snapped into the first positioning hole 203.

[0057] Specifically, the first snap-fit ​​portion of the tail-end pipeline 300 includes two spaced-apart blocks, a first block 301 and a second block 302, with an annular groove 303 between them. The first block 301 is located inside the metal casing 200, and the second block 302 is located outside the metal casing 200. The wall of the first positioning hole 203 is inserted into the annular groove 303. This achieves a reliable connection between the tail-end pipeline 300 and the metal casing 200, making it difficult for the tail-end pipeline 300 to separate from the metal casing 200. Both blocks have holes for the wiring to pass through, and after passing through the two blocks, the wiring can connect to the solder pads 106 on the housing 100.

[0058] Similarly, such as Figure 1 , Figure 8 and Figure 11 As shown, in one embodiment, it also includes a sound guide tube 400, one end of which is provided with a second snap-fit ​​part, and the front end of the metal shell 200 is provided with a second positioning hole 204, and the second snap-fit ​​part of the sound guide tube 400 is snapped into the second positioning hole 204.

[0059] Specifically, one end of the sound guide tube 400 is provided with an annular groove 401, and the wall of the second positioning hole 204 is inserted into the annular groove 401. This results in a portion of the sound guide tube 400 being located inside the metal casing 200, while the other portion is located outside the metal casing 200.

[0060] like Figure 12As shown, this application conducted a comparative experiment. The housings used in the experiment included the housing of this application with the protrusion 104 and the auxiliary hole 105, and a housing in the prior art without the protrusion and auxiliary hole. From Figure 12 It can be seen that by adopting the housing of this application, the mid-to-low frequency sound is enhanced and the high frequency sound is extended, which is beneficial to improving the receiver's clarity of speech recognition.

[0061] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A housing for a moving iron sound-generating unit, the housing comprising a front portion, a top portion adjacent to the front portion, a bottom portion, and two side portions, characterized in that, The front of the housing is provided with a sound outlet, and the top of the housing is provided with an outward protrusion. The interior of the protrusion forms an auxiliary cavity that communicates with the inner cavity of the housing and the sound outlet. The length of the protrusion is 1 / 3 to 1 / 2 of the length of the housing, the height of the protrusion ranges from 0.2 to 0.5 mm, and the width of the protrusion ranges from 1.5 to 3.5 mm.

2. The housing of the moving iron sound-generating unit according to claim 1, characterized in that, An auxiliary hole is provided on one side of the housing or on both sides of the housing, and the auxiliary hole communicates with the inner cavity of the housing.

3. The housing of the moving iron sound-generating unit according to claim 1, characterized in that, An auxiliary hole is provided at the bottom of the housing, and the auxiliary hole communicates with the inner cavity of the housing.

4. The housing of the moving iron sound-generating unit according to claim 2 or 3, characterized in that, The number of auxiliary holes is one or more, and the shape of the auxiliary holes is circular, elliptical or rectangular.

5. The housing of the moving iron sound-generating unit according to claim 2 or 3, characterized in that, The area of ​​the auxiliary hole is 2 mm² or more.

6. The housing of the moving iron sound-generating unit according to claim 1, characterized in that, The protrusion includes a flat plate segment and an annular segment connected to the flat plate segment, and the number of the protrusion is one or more.

7. The housing of the moving iron sound-generating unit according to claim 1, characterized in that, The protrusion is located on the side of the housing near the sound outlet.

8. A housing assembly, characterized in that, The housing includes the moving iron sound-generating unit according to any one of claims 1 to 7, the housing being disposed within a metal outer shell, the metal outer shell comprising an upper metal shell and a lower metal shell, the upper metal shell and the lower metal shell being welded together.

9. The housing assembly according to claim 8, characterized in that, It also includes a tail end pipeline, which includes a first snap-fit ​​portion. The tail end of the metal casing is provided with a first positioning hole, and the first snap-fit ​​portion of the tail end pipeline snaps into the first positioning hole.

10. The housing assembly according to claim 8, characterized in that, It also includes a sound guide tube, one end of which is provided with a second snap-fit ​​part, and the front end of the metal shell is provided with a second positioning hole, wherein the second snap-fit ​​part of the sound guide tube is snapped into the second positioning hole.

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