Sound receiver, method of manufacturing the same, and sound receiver housing side wall subassembly

Abstract

The present disclosure provides an acoustic receiver and a method for manufacturing the same, and an acoustic receiver housing sidewall subassembly. An acoustic receiver includes a first receiver subassembly having a bottom housing plate to which a motor assembly is fastened, and a second receiver subassembly having a closed-end receiver housing sidewall fastened to the bottom housing plate, the closed-end receiver housing sidewall including at least one sidewall opening, in which a portion of the acoustic receiver is disposed.

Description

Technical Field

[0001] The present disclosure relates generally to sound receivers and, more particularly, to sound receivers including a closed-end sidewall housing subassembly. Background Art

[0002] Hearing devices such as hearing aids, headphones and earplugs typically include a moving armature receiver that produces sound. Such a receiver typically includes a housing that houses a diaphragm that divides the housing into a front volume and a rear volume, and a motor that is disposed in the rear volume to drive the diaphragm via an interconnecting link. An electrical signal applied to the coil of the motor causes a reed to move between magnets held by a yoke. The movement of the reed, in turn, causes the diaphragm to move within the housing and, in turn, emit sound from a sound port.

[0003] The housing of the known acoustic armature receiver includes a multi-faceted bottom cup containing the motor and the diaphragm, and a top cup disposed above the bottom cup. The top cup and the bottom cup are formed in a drawing operation, which is costly to manufacture and laborious to assemble. Summary of the invention

[0004] The present disclosure provides an acoustic receiver, which includes: a first receiver subassembly, the first receiver subassembly includes: a bottom shell plate; and a motor, the motor is arranged on the bottom shell plate, the motor includes a coil, a reed and a yoke for holding a first magnet and a second magnet, the reed having a portion located near the coil and extending between the first magnet and the second magnet; a second receiver subassembly, the second receiver subassembly includes an end-closed shell side wall having a first open end, the first receiver subassembly and the second receiver subassembly are separate components, the bottom shell plate is capable of being connected to the end-closed shell side wall and covering the first open end of the end-closed shell side wall to form at least a portion of the receiver shell, wherein when the bottom shell plate is connected to the end-closed shell When the receiver housing is provided with a body side wall, the end-closed shell side wall is arranged around the motor, and the end-closed shell side wall defines a plurality of side wall openings, and the plurality of side wall openings include at least a first side wall opening arranged through a first side wall portion of the end-closed shell side wall and at least a second side wall opening arranged through a second side wall portion of the end-closed shell side wall, and the first side wall portion is opposite to the second side wall portion; a diaphragm, when the diaphragm is arranged in the receiver housing, the diaphragm divides the interior of the receiver housing into a front cavity volume and a rear cavity volume, wherein the motor is arranged in the rear cavity volume; and a connecting rod, the connecting rod interconnects the movable part of the reed with the movable part of the diaphragm, wherein the reed is capable of moving between the first magnet and the second magnet in response to an excitation signal applied to the coil.

[0005] The present disclosure also provides a sound receiver housing side wall subassembly, the sound receiver housing side wall subassembly comprising: a single metal strip, the single metal strip comprising a first end and a second end connected by a joint to form an end-closed receiver housing side wall; an acoustic port, the acoustic port being arranged through a first portion of the end-closed receiver housing side wall; a side wall opening, the side wall opening being arranged through a portion of the end-closed receiver housing side wall, wherein when the sound receiver housing side wall subassembly is integrated with other components of the sound receiver, the side wall opening accommodates a portion of the sound receiver; a diaphragm support member, the diaphragm support member protruding from an inner surface of the end-closed receiver housing side wall, the acoustic port being arranged on one side of the diaphragm support member, and a lead passing through the opening being arranged on an opposite side of the diaphragm support member.

[0006] The present disclosure also provides a method for manufacturing an acoustic receiver, the method comprising: assembling a first receiver subassembly by fastening a motor to a first housing cover, the motor having a coil, a yoke, and a reed extending through the coil and located between magnets held by the yoke; integrating the first receiver subassembly with a second receiver subassembly, the second receiver subassembly being an end-closed housing side wall, the end-closed housing side wall comprising a first side wall opening provided through a first side wall portion of the end-closed housing side wall and a second side wall opening provided through a second side wall portion of the end-closed housing side wall, wherein the first housing cover of the first receiver subassembly is disposed above the open end of the end-closed housing side wall and fastened to the open end of the end-closed housing side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a perspective view of a portion of a sound receiver housing according to one example;

[0008] Figure 2 is an assembly view of an acoustic receiver according to an example;

[0009] Figure 3 yes Figure 2 An assembly diagram of the acoustic receiver shown in ;

[0010] Figure 4 yes Figure 3 A cross-sectional view of the acoustic receiver shown in ;

[0011] Figures 5 and 6 is a perspective view of another acoustic receiver housing according to an example;

[0012] Figures 7 and 8 is a perspective view of another acoustic receiver housing according to another example; and

[0013] Fig. 9 is a flow chart of a method for assembling an acoustic receiver according to one example.

[0014] Those of ordinary skill in the art will appreciate that the elements in the drawings are illustrated for simplicity and clarity. It will also be understood that certain actions or steps may be described or depicted in a particular order of occurrence, and those of ordinary skill in the art will understand that unless a particular order is specifically indicated, such particularity with respect to order is not actually required. It will also be understood that the terms and expressions used herein have the ordinary meaning consistent with such terms and expressions with respect to the respective fields of investigation and study to which they correspond, unless a special meaning is otherwise set forth herein. DETAILED DESCRIPTION

[0015] The present disclosure generally relates to an acoustic receiver including separate receiver subassemblies. A first receiver subassembly includes a motor disposed on a bottom housing plate. The motor includes a coil, a yoke holding a first magnet and a second magnet, and a reed having a portion located near the coil and a portion extending between the magnets. A second receiver subassembly includes a closed-end housing sidewall having a first open end. The bottom housing plate covers the first open end to form at least a portion of a receiver housing such that the closed-end housing sidewall is disposed around the motor. The closed-end housing sidewall includes one or more sidewall openings. In some embodiments, the first sidewall opening is disposed through a first sidewall portion of the closed-end housing sidewall. In other embodiments, the second sidewall opening is disposed through a second sidewall portion of the closed-end housing sidewall. A diaphragm located in the receiver housing divides the interior of the receiver housing into a front cavity volume and a rear cavity volume, and the motor is disposed in the rear cavity volume. The reed is coupled to the diaphragm by a link such as a drive rod and is movable between the first magnet and the second magnet in response to an excitation signal applied to the coil.

[0016] In one embodiment, one or more side wall openings are formed at a bottom edge of the closed-end housing side wall, wherein the bottom edge is proximate to the bottom housing plate. In some examples, each side wall opening receives a corresponding portion of the yoke.

[0017] In another embodiment, one or more side wall openings are formed at the top edge of the closed-end housing side wall. The closed-end housing side wall also includes a second open end opposite to the first open end. A top housing plate or cover is fastened to the second open end. A portion of the top housing plate is disposed in the corresponding side wall opening. In some examples, the top housing plate includes a plurality of tabs disposed in the corresponding side wall openings.

[0018] In yet another embodiment, one or more side wall openings are formed at a bottom edge of the closed-end housing side wall, wherein the bottom edge is proximate to the bottom housing plate. In some examples, one or more side wall openings accommodate corresponding portions of a spool.

[0019] According to another aspect of the present disclosure, a closed-end housing sidewall subassembly for an acoustic receiver includes a single metal strip having a first end and a second end connected by a joint. When the sidewall subassembly is integrated with other components of the acoustic receiver, a sidewall opening disposed through a portion of the closed-end receiver housing sidewall accommodates a portion of the acoustic receiver. In some embodiments, a diaphragm support protrusion protrudes from an inner surface of the closed-end receiver housing sidewall. An acoustic port is disposed through another portion of the closed-end housing sidewall such that the acoustic port is disposed on one side of the diaphragm support protrusion and a lead pass-through opening is disposed on an opposite side of the diaphragm support protrusion.

[0020] In one embodiment, one or more sidewall openings formed at a bottom edge of the closed-end housing sidewall are configured to receive corresponding portions of a yoke when the sidewall subassembly is integrated with another subassembly including a yoke.

[0021] In another embodiment, one or more side wall openings formed at a top edge of the closed-end housing side wall are configured to receive corresponding portions of the top housing panel when the side wall subassembly is integrated with the top housing panel.

[0022] In yet another embodiment, one or more sidewall openings formed at a bottom edge of the closed-ended housing sidewall are configured to receive corresponding portions of a bobbin when the sidewall subassembly is integrated with another subassembly including the bobbin.

[0023] According to yet another aspect, a sound receiver housing sidewall subassembly includes a closed-end sidewall having a first sidewall portion, a second sidewall portion, a third sidewall portion, and a fourth sidewall portion. The closed-end sidewall includes a top edge and a bottom edge, wherein the top edge defines an open top portion, and the bottom edge defines an open bottom portion. A diaphragm support structure is disposed on the closed-end sidewall between the top edge and the bottom edge. An acoustic port is disposed through one of the sidewall portions of the closed-end sidewall, and another opening is disposed through a sidewall portion that is not a sidewall portion having an acoustic port. The other opening is configured to accommodate a portion of a component of the other subassembly when the other subassembly is integrated with the sidewall subassembly.

[0024] In implementations of the embodiments described herein, the closed-end sidewall is formed from a strip of material (metal or non-metal) having opposite ends joined by joints (e.g., a single joint or multiple butt joints). The first sidewall portion, the second sidewall portion, the third sidewall portion, and the fourth sidewall portion are defined in part by folds in the strip of material.

[0025] In one embodiment, the acoustic port is located between the top edge and the diaphragm support structure, and the opening is located between the bottom edge and the diaphragm support structure. The opening is configured to accommodate a portion of the motor when the subassembly is integrated with the motor of the acoustic receiver. In addition, the lead wire passing opening is disposed through a side wall portion opposite to the side wall portion having the acoustic port, wherein the acoustic port and the lead wire passing opening are located between the top edge and the diaphragm support structure.

[0026] In another embodiment, the acoustic port and the opening are located between the top edge and the diaphragm support structure. The opening is configured to receive a portion of the top housing plate when the subassembly is integrated with the top housing plate.

[0027] According to one method, an acoustic receiver is manufactured by assembling a first receiver subassembly with a second receiver subassembly. The first receiver subassembly is made by fastening an electric motor to a first housing cover, wherein a reed is positioned through a passage of an electric coil so that a movable portion of the reed is disposed between a first magnet and a second magnet of a yoke. The second receiver subassembly is a closed-end housing sidewall having a plurality of sidewall openings, the plurality of sidewall openings including a first sidewall opening disposed through a first sidewall portion and a second sidewall opening disposed through a second sidewall portion opposite the first sidewall portion.

[0028] In one embodiment, the first side wall opening and the second side wall opening are formed by the bottom edge of the closed-end housing side wall. The width of each of the first side wall opening and the second side wall opening is greater than the height of the opening, so that the first side wall opening and the second side wall opening are suitable for accommodating a portion of the yoke protruding into the first side wall opening and the second side wall opening.

[0029] In another embodiment, the first side wall portion includes at least a third side wall opening, and the second side wall portion includes at least a fourth side wall opening. The first side wall opening, the second side wall opening, and at least the third side wall opening are formed by the top edge of the closed-end housing side wall and are adapted to support the second housing cover. The second housing cover includes a plurality of tabs adapted to engage with the first side wall opening, the second side wall opening, and at least the third side wall opening.

[0030] In yet another embodiment, the first side wall opening and the second side wall opening are formed by the bottom edge of the closed-end housing side wall. The height of each of the first side wall opening and the second side wall opening is greater than the width of the opening, so that the first side wall opening and the second side wall opening are suitable for accommodating a portion of the spool protruding into the first side wall opening and the second side wall opening.

[0031] The acoustic receiver generally comprises a housing including a closed-end housing sidewall subassembly. Figure 1In one embodiment, the closed-end housing sidewall 100 is implemented as a folded strip of material (e.g., a folded metal or non-metal strip) having an open bottom portion 102 (also referred to as a first open end), an open top portion 104 (also referred to as a second open end), a first sidewall portion 106, a second sidewall portion 108, a third sidewall portion 110, and a fourth sidewall portion 112. The sidewall portions are partially defined by the folds in the strip of material. In other embodiments, the sound receiver housing can be implemented as a pentagonal cup with only a single open portion, or as a segment of a tubular stock. Such a tubular stock can be formed by extrusion or by folding the material with a longitudinal seam.

[0032] The closed-ended housing sidewall includes a top edge 114, a bottom edge 116, an inner surface 118, and an outer surface 120. The top edge defines an open top portion 104 and the bottom edge defines an open bottom portion 102. The top edge includes an acoustic notch opening or port 126 and the bottom edge includes a lead pass-through opening or port 128.

[0033] exist Figure 1 In the embodiment, the closed-end housing sidewall includes a first end 122 and a second end 124 coupled by a joint 123 (e.g., a single joint, multiple butt joints, press-fit tabs and recesses, etc.). However, it will be appreciated that any suitable fixing mechanism may be employed, including brazing, blooming, or any other suitable mechanism for connecting the first and second ends.

[0034] The closed-end side walls of the housing also include a diaphragm support structure. Figure 1 In the embodiment of the present invention, the structure is implemented as a plurality of diaphragm support protrusions 130 to 133 located between the top edge 114 and the bottom edge 116. However, other support structures (e.g., an elongated shelf protruding from or fastened to two or more of the shell side walls) may alternatively be used. The diaphragm support structure is suitable for positioning the diaphragm within the shell. Figure 1 In the embodiment, the diaphragm support protrusions 130 to 133 are formed by stamping the outer surface 120 so that the protrusions protrude on the inner surface 118. On the outer surface 120, these protrusions appear as recesses or grooves. Figure 1 Four diaphragm support protrusions are shown located on the side wall portions, but in other embodiments any number, shape, and configuration of diaphragm support structures may be used.

[0035] The acoustic port 126 is located on a different side wall portion than the lead wire pass-through opening 128. The acoustic port is disposed on one side of the diaphragm support structure, while the lead wire pass-through opening is disposed on the other side of the diaphragm support structure. The acoustic port is located between the top edge and the diaphragm support structure. It will be appreciated that the acoustic port and / or lead wire pass-through opening may be placed at other locations on any side wall portion.

[0036] Closed-ended housing sidewalls typically include one or more sidewall openings formed in one or more sidewall sections. Figure 1 A plurality of sidewall openings are shown, including a first sidewall opening 134 disposed through the first sidewall portion 106 and a second sidewall opening 135 disposed through the second sidewall portion 108. In this example, the first sidewall opening 134 and the second sidewall opening 135 are located between the bottom edge 116 and the diaphragm support protrusions 130-133.

[0037] Figure 2 An acoustic receiver 200 is illustrated, which includes a housing sidewall 100 with closed ends, a diaphragm 202, and a top housing cover or plate 204. The acoustic receiver also includes a bottom housing cover or plate 206 and a motor 208 disposed on the bottom housing plate. The motor includes an electric coil 210 disposed around a bobbin 211, and the bobbin 211 has a first flange portion 212 and a second flange portion 213. However, in other embodiments, the coil does not include a bobbin. A yoke 214 holds a first magnet 216 and a second magnet 218 in a spaced relationship, and a reed (or armature) 220 has a portion disposed through the coil and a portion extending between the magnets.

[0038] exist Figure 2 , the yoke 214 is an assembly including a strap portion 224 that holds a first magnet 216 and a magnet plate 226 that holds a second magnet 218. The magnet plate 226 is fastened to the bottom housing plate 206 by welding, adhesive, crimping flanges, or some other fastening mechanism. The strap portion 224 can be welded to the magnet plate 226. In other embodiments, the yoke 214 is a stamped folded structure with butted ends, or a stack of closed ends welded together, or a section of extruded tube blanks, or any other suitable structure. The first magnet and the second magnet can be fastened to the yoke by welding, adhesive, crimping flanges, or some other fastening mechanism. The reed 220 is a U-shaped reed, the ends of which are fastened to the yoke 214. In other embodiments, the reed 220 can be configured differently (e.g., an E-shaped reed). The bottom housing plate 206 and the motor form a receiver subassembly 244.

[0039] After the motor is disposed (e.g., welded) on the bottom housing plate, the closed-end housing sidewall 100 is fastened to the bottom housing plate 206. The closed-end housing sidewall forms a second receiver subassembly 246. The first subassembly 244 and the second subassembly 246 are separate components that are assembled together by coupling the bottom housing plate 206 to the open bottom portion (or first open end) 102 of the closed-end housing sidewall 100. After the diaphragm is assembled, the top housing plate 204 is assembled to the open top portion (or second open end) 104 of the closed-end housing sidewall. The housing plate can be fastened to the closed-end housing sidewall by one or more welding, adhesives, crimping flanges, or some other fastening mechanism. The closed-end housing sidewall 100, the diaphragm 202, the top housing plate 204, and the bottom housing plate 206 including the motor are discrete components that form a receiver housing after assembly.

[0040] The diaphragm 202 is positioned and held in the receiver housing prior to assembly of the top housing plate 204. The diaphragm support protrusions 130 to 133 position and support the diaphragm. In one embodiment, the diaphragm is positioned on the protrusions 130 to 133 and secured with an adhesive that forms a seal between the diaphragm and the sidewalls.

[0041] The diaphragm 202 includes a paddle 227, a frame 228, and a gap 229 separating the diaphragm 227 from the frame 228. The diaphragm 202 also includes hinge members 230, 231 connecting the diaphragm 227 to the frame 228. Figure 2 In the embodiment of the present invention, the gap is generally U-shaped and the hinge member is a torsion hinge member that forms a torsion hinge disposed on the opposite side of the diaphragm. In other embodiments, the hinge member can be a cantilever hinge member that forms a cantilever hinge disposed along a single side of the diaphragm. The gap can be covered by a polyurethane film (not shown) to form an air seal. When moved, the diaphragm 227 causes sound to be emitted from the acoustic port 126. The diaphragm 202 can be made of a variety of materials (e.g., aluminum, nickel, copper, etc.), as well as made of a single unassembled member or formed as an assembly of separate parts.

[0042] The connecting rod interconnects the movable part of the reed with the movable part of the diaphragm. Figure 2In the embodiment of the present invention, the connecting rod is a drive rod 232, which is attached to the movable part of the reed 220 and fixed to the opening 233 in the diaphragm (for example, by using an adhesive). The opening is usually larger than the drive rod so that the opening is aligned with the drive rod during assembly. Alternatively, the connecting rod can be implemented as a bent finger extending from the movable end of the reed, or as some other member fastened to the reed and the diaphragm. In other embodiments, the connecting rod can extend from the movable part of the reed, pass through the gap between the coil and the yoke, or pass through the channel in the yoke, and then pass through the hole in the fixed part of the reed. In response to the excitation signal applied to the coil via the electrical leads 234, 236, the reed can move between the first magnet and the second magnet. The lead passing through the opening 128 allows the electrical leads and any other electronic components to pass to the outside of the receiver housing. If a non-ventilated back cavity volume is required, any opening around the electrical leads can be sealed with a soundproof sealant or other suitable material.

[0043] exist Figure 1 and Figure 2 , the first side wall opening 134 and the second side wall opening 135 are formed at the bottom edge 116 of the closed-end housing side wall 100. The bottom edge 116 is adjacent to the bottom housing plate 206. Each of the first side wall opening and the second side wall opening is configured to receive a corresponding portion of the yoke. When assembled, the first side wall opening 134 and the second side wall opening 135 receive corresponding flange portions 238, 240 of the yoke that protrude into the first side wall opening and the second side wall opening. Although Figure 1 Multiple openings are shown, but in some embodiments, a single opening may be used, depending on the configuration of the yoke and / or other components of the acoustic receiver. Figures 1 to 3 The sidewall opening in enables the use of a larger yoke without having to enlarge or resize the closed-end housing sidewall 100 and can facilitate alignment during assembly. Other advantages will be recognized by those of ordinary skill in the art.

[0044] Figure 3 The acoustic receiver is illustrated after assembly with a first receiver subassembly and a second receiver subassembly.As shown in this example, the flange portion 238 extends to the edge of the bottom housing plate 206 and the closed-end housing side wall 100. Figure 4 A cross section of the assembled acoustic receiver along line aa is shown. An edge 402 of the flange portion 238 is aligned with the outer surface 120 of the first side wall portion 106. Similarly, an edge 404 of the flange portion 240 is aligned with the outer surface 120 of the second side wall portion 108. In other embodiments, however, the edges 402, 404 may extend or protrude beyond the outer surface 120. The side wall opening may be sealed with a soundproofing sealant or other suitable material for applications where ventilation of the rear cavity volume is not required.

[0045] Figure 5 and Figure 6 Another embodiment of an acoustic receiver using a different top housing plate 502 is shown. In this embodiment, the closed-end housing sidewall has a sidewall opening at the top edge 114. In particular, a first sidewall opening 504 is formed in the first sidewall portion 106, and a second sidewall opening 506 is formed in the second sidewall portion 108. In addition, a third sidewall opening 508 and a fourth sidewall opening 510 are formed in the first sidewall portion 106 and the second sidewall portion 108, respectively. The sidewall openings 504 to 510 are located between the top edge 114 and the diaphragm support member (at Figure 5 and Figure 6 130 to 133). Figure 5 Rectangular sidewall openings are shown, but other suitable shapes and geometries may be used in other embodiments.

[0046] exist Figures 5 and 6 504 to 510 are configured to accommodate and provide support for corresponding tabs 514 to 520 of the top housing panel 502. Once assembled, the side wall openings 504 to 510 can be sealed by a soundproofing sealant or other suitable material. The shape and geometry of the side tabs 514 to 520 are configured to fit or conform to the shape and geometry of the side wall openings 504 to 510. In other embodiments, the top housing panel is formed by a stamped cup portion disposed on and fastened to the side wall. Such fastening can be performed by welding or other fastening means.

[0047] exist Figure 5 and Figure 6 , the top housing plate 502 also includes an acoustic port tab 522 placed over the acoustic port 126 to cover at least a portion of the acoustic port 126. The width of the acoustic port tab 522 matches the width of the acoustic port 126. The height of the acoustic port 126 can vary depending on how large the opening is desired. Figure 5 The acoustic port 126 and acoustic port tab 522 are shown as rectangular, but other suitable shapes (eg, arcuate) may be used in other embodiments. In embodiments where the top housing plate is a cup, the acoustic port may alternatively be disposed in the cup. Figure 6 A plurality of side tabs are shown positioned in the side wall openings 504 to 510 to cover the open top portion 104 of the closed-end housing side wall. Figure 5 and Figure 6 The side wall openings 504 to 510 in the housing allow for precise alignment of the top cover plate with tabs 514 to 520, ease of assembly and reduced overall height of the closed-end housing side walls. Other advantages will be recognized by those of ordinary skill in the art.

[0048] Figure 7 and Figure 8 Another embodiment of an acoustic receiver is shown in which the closed-ended housing sidewall 100 has sidewall openings 702, 704 defined on the bottom edge 116. Each of the sidewall openings 702, 704 is configured to receive a portion of a spool 706. Figure 7 The spool 706 has Figure 2 The general form of the spool 211 is different in that Figure 7 The second flange portion 710 of the spool 706 in the side wall extends to the edge of the bottom housing plate 206. In this way, the side wall openings 702, 704 accommodate corresponding flange portions 712, 714 that protrude into the side wall openings.

[0049] Figure 7 Also shown are a yoke 716, a coil 718, and electrical leads 720, 722. The yoke is in the form of a stamped folded structure with butted ends (not shown), or is constructed from stacked and welded plates. Although not shown, Figure 7 The sound receiver also includes other parts, such as reed, diaphragm and top cover.

[0050] Figure 8 The assembled acoustic receiver 200 is shown with a nozzle 724 and an optional termination cover 726 for the electrical leads. Figures 7 and 8 The side wall openings 702, 704 in the side wall can be used to position the bottom plate relative to the side wall, on which the motor including the spool is disposed. Acoustic sealing can be provided by applying glue in the seams between the side wall and the bottom plate and the side wall openings when necessary. Other advantages will be recognized by those of ordinary skill in the art.

[0051] It should be noted that any combination of the side wall openings described herein may be used in a sound receiver that implements a closed-end housing side wall. Figure 5 The side wall openings 504 to 510 together with the top housing plate 502 are Figure 1 The side wall openings 134 to 135 are used in combination. Other arrangements will be recognized by those of ordinary skill in the art.

[0052] Fig. 9 Methods for making an acoustic receiver, such as an acoustic receiver having a sidewall with an opening as described herein, are illustrated. The operations described may be performed manually or using automated assembly machines and fixtures. Fig. 9 As shown, assembly of an acoustic receiver is shown starting at block 900 .

[0053] In block 902, a motor is placed on a first housing cover to form a first receiver subassembly. This process may require multiple substeps, depending on the specific configuration of the motor. Figure 2 , for example, before assembling the yoke band portion 224, the reed 220 and the coil 210, the yoke plate 226 and the magnet 218 are fastened to the cover 206. In frame 904, the first receiver subassembly is assembled with the second receiver subassembly. The second receiver assembly is a closed-end shell sidewall having a plurality of sidewall openings, the plurality of sidewall openings including a first sidewall opening disposed through a first sidewall portion of the closed-end shell sidewall and a second sidewall opening disposed through a second sidewall portion of the closed-end shell sidewall. The first sidewall portion is opposite to the second sidewall portion. The closed-end shell sidewall can be formed (e.g., folded) from strips of metal, plastic, carbon fiber or any other suitable material. Alternatively, the closed-end sidewall is made by other operations described herein. The plurality of sidewall openings allow a portion of the acoustic receiver to be disposed in the sidewall opening.

[0054] In frame 906, the diaphragm is assembled with the housing. In some embodiments, the diaphragm is assembled with the side wall portion with closed ends. In an embodiment where the second housing cover is implemented as a cover with a short side wall portion (which has a diaphragm retaining structure), the diaphragm can be assembled with the cover instead of the side wall portion with closed ends. In some embodiments, when the diaphragm is assembled with the side wall with closed ends, the connecting rod interconnects the reed and the diaphragm. In frame 908, the cover is assembled with the side wall with closed ends. In other embodiments where the diaphragm is assembled in the cup portion, when the cup portion is placed on the side wall with closed ends, the connecting rod interconnects the reed and the diaphragm. When the second cover portion is assembled, the diaphragm divides the interior into a front cavity volume and a rear cavity volume, wherein the motor is arranged in the rear cavity volume. The sound receiver is fully assembled by fastening the second housing cover to the housing side wall with closed ends. The assembly of the sound receiver ends in frame 910.

[0055] While the disclosure and what is presently believed to be the best mode has been described in a manner that establishes the inventors have and enables one of ordinary skill in the art to make and use the disclosure, it should be understood and appreciated that there are many equivalents to the exemplary embodiments disclosed herein and that various modifications and changes may be made thereto without departing from the scope and spirit of the disclosure, which is not limited by the exemplary embodiments but rather by the claims that follow.

Claims

1. A sound receiver, comprising: A first receiver subassembly, the first receiver subassembly comprising: a bottom housing plate; and a motor disposed on the bottom housing plate, the motor including a coil, a reed, and a yoke holding a first magnet and a second magnet, the reed having a portion located near the coil and extending between the first magnet and the second magnet; a second receiver subassembly, the second receiver subassembly comprising a closed-end housing sidewall having a first open end, the first receiver subassembly and the second receiver subassembly being separate components, The bottom housing plate is coupleable to the closed-end housing sidewall and covers the first open end of the closed-end housing sidewall to form at least a portion of a receiver housing, wherein the closed-end housing sidewall is disposed around the motor when the bottom housing plate is coupled to the closed-end housing sidewall, the closed-end housing sidewall defining a plurality of sidewall openings, the plurality of sidewall openings including at least a first sidewall opening disposed through a first sidewall portion of the closed-end housing sidewall and at least a second sidewall opening disposed through a second sidewall portion of the closed-end housing sidewall, the first sidewall portion being opposite the second sidewall portion, wherein the at least first sidewall opening and the at least second sidewall opening receive corresponding portions of the yoke protruding into the at least first sidewall opening and the at least second sidewall opening; a diaphragm which, when disposed in the receiver housing, divides the interior of the receiver housing into a front volume and a rear volume, wherein the motor is disposed in the rear volume; and a connecting rod interconnecting the movable portion of the reed with the movable portion of the diaphragm, The reed is capable of moving between the first magnet and the second magnet in response to an excitation signal applied to the coil.

2. The acoustic receiver according to claim 1, wherein: The at least first side wall opening and the at least second side wall opening are formed at a bottom edge of the closed-end shell side wall, the bottom edge being close to the bottom shell plate, and the width of each of the at least first side wall opening and the at least second side wall opening is greater than the height of the opening.

3. The acoustic receiver of claim 1, further comprising a top housing plate, the closed-end housing sidewall having a second open end opposite the first open end, the top housing plate being fastened to the second open end of the closed-end housing sidewall, wherein: Corresponding portions of the top housing panel are disposed in the at least first side wall opening and the at least second side wall opening.

4. The sound receiver according to claim 3, wherein: The at least first side wall opening and the at least second side wall opening are formed at a top edge of the closed-end housing side wall, and the top housing panel includes corresponding tabs disposed in the at least first side wall opening and the at least second side wall opening.

5. The sound receiver according to claim 1, wherein the motor further comprises a bobbin, the coil is arranged around the bobbin, wherein: The at least first side wall opening and the at least second side wall opening receive corresponding portions of the bobbin that protrude into the at least first side wall opening and the at least second side wall opening.

6. The acoustic receiver according to claim 5, wherein: The at least first side wall opening and the at least second side wall opening are formed at a bottom edge of the closed-end shell side wall, the bottom edge being close to the bottom shell plate, and the height of each of the at least first side wall opening and the at least second side wall opening is greater than the width of the opening.

7. A sound receiver housing side wall subassembly, the sound receiver housing side wall subassembly comprising: a single metal strip including a first end and a second end coupled by a joint to form a closed-end receiver housing sidewall; an acoustic port disposed through a first portion of the closed-ended receiver housing sidewall; a sidewall opening disposed through a portion of the closed-end receiver housing sidewall, wherein the sidewall opening accommodates a portion of the acoustic receiver when the acoustic receiver housing sidewall subassembly is integrated with other components of the acoustic receiver; a diaphragm support member protruding from an inner surface of a side wall of the closed-end receiver housing, The acoustic port is provided on one side of the diaphragm support member, and the lead wire passing opening is provided on the opposite side of the diaphragm support member.

8. The acoustic receiver housing sidewall subassembly of claim 7, wherein: The sidewall opening is configured to receive a portion of the yoke when the acoustic receiver housing sidewall subassembly is integrated with a motor including the yoke.

9. The acoustic receiver housing sidewall subassembly of claim 8, wherein: The side wall opening is formed at a bottom edge of the closed-end receiver housing side wall.

10. The acoustic receiver housing sidewall subassembly of claim 7, wherein: The sidewall opening is configured to receive a portion of the top housing panel when the acoustic receiver housing sidewall subassembly is integrated with the top housing panel.

11. The acoustic receiver housing sidewall subassembly of claim 10, wherein: The side wall opening is formed at a top edge of the closed-ended receiver housing side wall.

12. The acoustic receiver housing sidewall subassembly of claim 10, wherein: The closed-end receiver housing side wall includes two opposing wall portions, namely, a first wall portion and a second wall portion, wherein the first wall portion includes at least a first side wall opening and the second wall portion includes at least a second side wall opening, wherein the at least first side wall opening and the at least second side wall opening are adapted to accommodate corresponding portions of the top housing plate when the acoustic receiver housing side wall subassembly is integrated with the top housing plate.

13. The acoustic receiver housing sidewall subassembly of claim 7, wherein: The sidewall opening is configured to receive a portion of the spool when the acoustic receiver housing sidewall subassembly is integrated with a motor including the spool.

14. The acoustic receiver housing sidewall subassembly of claim 13, wherein: The side wall opening is formed at a bottom edge of the closed-end receiver housing side wall.

15. A method of manufacturing an acoustic receiver, the method comprising: assembling a first receiver subassembly by securing an electric motor having a coil, a yoke, and a reed extending through the coil and between magnets retained by the yoke to a first housing cover; integrating the first receiver subassembly with the second receiver subassembly, The second receiver subassembly is a closed-end housing sidewall, the closed-end housing sidewall including a first sidewall opening disposed through a first sidewall portion of the closed-end housing sidewall and a second sidewall opening disposed through a second sidewall portion of the closed-end housing sidewall, wherein the first housing cover of the first receiver subassembly is disposed above and secured to an open end of the closed-end housing sidewall, The method further includes positioning a portion of the yoke in the first side wall opening and the second side wall opening when the first receiver subassembly is integrated with the second receiver subassembly, wherein the first side wall opening and the second side wall opening extend to a bottom edge of the end-closed shell side wall.

16. The method according to claim 15, further comprising: When the first receiver subassembly is integrated with the second receiver subassembly, the portion of the bobbin around which the coil is wound is positioned in the first side wall opening and the second side wall opening, wherein the first side wall opening and the second side wall opening extend to the bottom edge of the closed-end housing side wall.

17. The method according to claim 15, further comprising: The second housing cover is integrated with the second receiver subassembly by positioning tabs of the second housing cover in the first and second sidewall openings extending to a top edge of the closed-end housing sidewall.

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