Hybrid receiver with fixed bracket for driver

Abstract

A hybrid receiver having a fixed bracket for a driver is provided, which can effectively arrange an armature receiver and a dynamic receiver in a housing. The hybrid receiver includes: a dynamic driver including a frame, a magnetic circuit, a voice coil and a diaphragm, the voice coil vibrates through the magnetic circuit and mutual electromagnetic force, and the diaphragm is attached to the voice coil to vibrate; a balanced armature driver including a housing, a magnetic circuit, a coil, an armature, a rod and a diaphragm, the armature is magnetized by the magnetic field of the coil to interact with the magnetic circuit, the rod is vertically connected to the armature, and the diaphragm vibrates through the rod; and a bracket, the upper part of the bracket connected to the diaphragm of the dynamic driver has a sound emission port configured to emit the sound of the dynamic driver, wherein the bracket has a balanced armature driver accommodating space on its upper surface, the balanced armature driver is arranged so that the diaphragm is parallel to the upper surface of the bracket, and the housing has a sound emission hole above the diaphragm.

Description

Technical Field

[0001] The present disclosure relates to a hybrid receiver having a fixed bracket for a driver, and more particularly to a hybrid receiver having a fixed bracket that allows an armature driver and a dynamic driver to be easily and removably attached to the fixed bracket. Background Art

[0002] Nowadays, with the development of portable multimedia devices, receivers that reproduce the sounds of the multimedia devices need to have high power, and therefore, headphones using hybrid receivers, bidirectional receivers, multiple drivers, and TWS headphones are highly competitive in the market.

[0003] In the audible frequency, the sound range can be divided into low-range sound pressure, mid-range sound pressure and high-range sound pressure, and there is a limit to covering all sound pressures using a general sol driver. Therefore, multiple drivers can be used to achieve the target sound pressure in each sound range.

[0004] Particularly in the case of a hybrid receiver combining different types of drivers, a compact and stable mechanical structure for fixing each driver is required.

[0005] Figure 1 2 is a view showing a hybrid earphone according to the prior art. The hybrid earphone according to the prior art may include a housing 10 , a first speaker 20 , a second speaker 30 , a circuit board 40 , and a sound filter 50 .

[0006] The housing 10 may have an accommodation space therein and a sound output port for outputting sound to the outside, and may include an upper body 11 , a lower body 12 , a holder 13 , and a waveguide 14 .

[0007] The upper body 11 is a member accommodating an upper portion of the second speaker 30 , and according to implementation, an upper cover 11 a for opening and closing a portion of the upper body 11 may also be provided, and in this case, the upper cover 11 a may be formed of a transparent material.

[0008] The lower body 12 has a stepped portion 12 a formed along an inner peripheral surface thereof to support an outer lower surface of the second speaker 30 , and the acoustic filter 50 is seated at an inner side of the stepped portion 12 a .

[0009] The retainer 13 is a component for fixing the second speaker 30 through the combination of the upper body 11 and the lower body 12, and in an embodiment of the present disclosure, a predetermined recess is provided to allow the second speaker 30 to sit on the recess, so that the upper surface of the second speaker 30 is fitted into the recess, and an air inlet (not shown) is provided on one side.

[0010] The hybrid earphone according to the related art adopts a balanced armature driver speaker as the first speaker 20. In this case, the first speaker 20 is provided in the waveguide 14, and therefore, the length of the longest side of the first speaker 20 is limited within the length of the waveguide 14. Therefore, the area obtained by subtracting the area of ​​the section of the first speaker 20 from the waveguide 14 can be used as the area of ​​the duct for transmitting the sound of the second speaker 30. This leads to the following disadvantages: the size of the first speaker 20 is limited and the area of ​​the section of the duct of the second speaker 30 is reduced.

[0011] Meanwhile, recently, devices for listening to music such as earphones, headphones, and TWS earphones are equipped with an active noise reduction (ANC) function in many cases. In order to apply the ANC function, ambient noise is actively blocked by canceling noise using the front and rear MICs (feedforward / feedback). Therefore, in order to install the feedback microphone in the narrow front space of the housing, it is necessary to arrange the space inside the housing more effectively.

[0012] [Related technical literature]

[0013] [Patent Document]

[0014] Korean Patent Registration No.10-1634236. Summary of the invention

[0015] An aspect of the present disclosure provides a hybrid receiver having a fixed structure for a driver, in which an armature receiver and a dynamic receiver can be efficiently disposed in a housing.

[0016] According to an aspect of the present disclosure for achieving the above-mentioned purpose, there is provided a hybrid receiver having a fixed bracket for a driver and including a combination of different types of drivers, the hybrid receiver including: a dynamic driver, the dynamic driver including a frame, a magnetic circuit, a voice coil and a diaphragm, the voice coil vibrating through the magnetic circuit and mutual electromagnetic force, and the diaphragm being attached to the voice coil to vibrate; a balanced armature driver, the balanced armature driver including a housing, a magnetic circuit, a coil, an armature, a rod and a diaphragm, the armature being magnetized by the magnetic field of the coil to interact with the magnetic circuit, the rod being vertically connected to the armature, and the diaphragm vibrating through the rod; and a bracket, the bracket being connected to an upper portion of the diaphragm of the dynamic driver, and the bracket having a sound emitting port configured to emit the sound of the dynamic driver, wherein the bracket has a balanced armature driver accommodating space on an upper surface of the bracket, the balanced armature driver is arranged so that the diaphragm is parallel to the upper surface of the bracket, and the housing has a sound emitting hole above the diaphragm.

[0017] Furthermore, as another example of the present embodiment, the hybrid receiver may further include: a shielding member installed between the balanced armature driver and the dynamic driver and configured to shield magnetism.

[0018] Furthermore, as another example of the present embodiment, a shielding member may be mounted on the upper surface of the bracket.

[0019] Furthermore, as another example of the present embodiment, the shielding member may surround the balanced armature driver.

[0020] Furthermore, as another example of the present embodiment, the bracket may have an air pressure balance hole on the outer side of the dynamic driver that communicates with the rear space of the dynamic driver.

[0021] Furthermore, as another example of the present embodiment, the hybrid receiver may further include: a mesh member attached to the air pressure balance hole.

[0022] Furthermore, as another example of the present embodiment, the dynamic driver and the balanced armature driver may each include a terminal for transmitting an electrical signal to the voice coil and the coil, and the terminals of the dynamic driver and the terminals of the balanced armature driver may be aligned to be positioned in the same direction.

[0023] Furthermore, as another example of the present embodiment, the hybrid receiver may further include: a flexible circuit board electrically connected to the terminals of the dynamic driver and the terminals of the balanced armature driver and fixed to the bracket.

[0024] In addition, as another example of this embodiment, the terminals of the balanced armature driver that send electrical signals to the coil can be installed on the side surface close to the periphery of the bracket, the bracket can surround the outer surface of the shell of the balanced armature driver, and the terminals of the balanced armature driver and the sound emitting holes of the shell can be exposed to the outside of the bracket.

[0025] Furthermore, as another example of the present embodiment, the hybrid receiver may further include: a protection cover coupled to the bracket and configured to surround the balanced armature driver.

[0026] The hybrid receiver provided in the present disclosure can increase the area of ​​the conduit for sound transmission in the sound tube to transmit sound to the ear canal by mounting the balanced armature driver on a bracket covering the upper portion of the dynamic driver.

[0027] In addition, since the hybrid receiver provided in the present disclosure is connected to the earphone housing with the dynamic driver and the balanced armature driver fixed in the bracket, the relative positions of the dynamic driver and the balanced armature can be prevented from deviating during the assembly process, thereby also reducing acoustic deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a view showing a hybrid earphone according to the prior art;

[0029] Figure 2 is a cross-sectional view of a hybrid receiver having a fixing bracket for a driver according to a first embodiment of the present disclosure;

[0030] Figure 3 is an exploded view of a hybrid receiver having a fixing bracket for a driver according to a first embodiment of the present disclosure;

[0031] Figure 4 is a graph showing a comparison between a sound pressure of a balanced armature driver of a hybrid receiver having a fixing bracket for a driver according to a first embodiment of the present disclosure and a sound pressure of a balanced armature driver of a receiver in which no shielding member is installed;

[0032] Figure 5 is a cross-sectional view of a first comparative example in which only a balanced armature driver is mounted on a fixed bracket for a driver;

[0033] Figure 6 is a cross-sectional view of a second comparative example in which polarities of a magnetic circuit of a balanced armature driver and polarities of a magnetic circuit of a dynamic driver are arranged in the same direction without installing a shield member in a fixing bracket for the driver;

[0034] Figure 7 is a cross-sectional view of a third comparative example in which a shield member is mounted on a fixed bracket for a driver, and polarities of a magnetic circuit of a balanced armature driver and polarities of a magnetic circuit of a dynamic driver are arranged in opposite directions;

[0035] Figure 8 is a cross-sectional view of a hybrid receiver having a fixing bracket for a driver according to a second embodiment of the present disclosure;

[0036] Fig. 9 is a perspective view of a hybrid receiver having a fixing bracket for a driver according to a second embodiment of the present disclosure;

[0037] Fig.10 is a view showing an earphone equipped with a hybrid receiver having a fixing bracket for a driver according to a second embodiment of the present disclosure;

[0038] Fig.11 is a cross-sectional view of a hybrid receiver having a fixing bracket for a driver according to a third embodiment of the present disclosure;

[0039] Fig.12 is an exploded view of a hybrid receiver having a fixing bracket for a driver according to a third embodiment of the present disclosure;

[0040] Fig.13 is a perspective view of a hybrid receiver having a fixing bracket for a driver according to a third embodiment of the present disclosure;

[0041] Fig.14 is a cross-sectional view schematically showing an earphone equipped with a hybrid receiver having a fixing bracket for a driver according to a third embodiment of the present disclosure;

[0042] Fig.15 is a cross-sectional view of a hybrid receiver having a fixing bracket for a driver according to a fourth embodiment of the present disclosure; and

[0043] Fig.16 is a perspective view of a hybrid receiver having a fixing bracket for a driver according to a fourth embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

[0045] Figure 2 is a cross-sectional view of a hybrid receiver having a fixed bracket for a driver according to a first embodiment of the present disclosure, and Figure 3 is an exploded view of a hybrid receiver having a fixing bracket for a driver according to a first embodiment of the present disclosure.

[0046] The hybrid receiver having a fixed bracket for a driver according to the first embodiment of the present disclosure includes a dynamic driver 100 , a balanced armature driver 200 , and a bracket 300 for fixing the drivers 100 and 200 .

[0047] In the dynamic driver 100, the yoke 120 as a part of the magnetic circuit is inserted and injected into the frame 110, which is a plastic injection material. The yoke 120 has a bottom surface and a side wall, which is bent upward along the outer periphery of the bottom surface. The permanent magnet 130 is attached to the bottom surface of the yoke 120 at a distance from the side wall, and the plate 140 that helps to form a magnetic flux is attached to the permanent magnet 130. An air gap is formed between the outer peripheral surface of the permanent magnet 130 and the plate 140 and the side wall of the yoke 120, and the lower end of the voice coil 150 is located in the air gap. When an electric signal is applied to the voice coil 150, the voice coil 150 vibrates by the electromagnetic force formed by the voice coil 150 and the mutual electromagnetic force between the permanent magnet 130 and the plate 140. Here, the upper end of the voice coil 150 is attached to the diaphragm 160, and the diaphragm 160 also vibrates by the vibration of the voice coil 150 to produce sound. Meanwhile, a terminal (not shown) capable of transmitting an electrical signal to the voice coil 150 may be coupled to the frame 110 or may be integrally formed through insert injection.

[0048] Here, the bracket 300 is connected to the frame 110 to cover the upper portion of the dynamic driver 100, that is, the upper portion of the diaphragm 160. Here, the bracket 300 includes a sound emission port 310 to emit the sound generated by the diaphragm 160 of the dynamic driver 100, and in this case, a plurality of sound emission ports 310 may also be provided as needed.

[0049] The balanced armature driver 200 may include: a housing 210; a coil 222, which is installed in the housing 210 and is wound around a coil frame (not shown) to generate a magnetic field by an electric current; a magnetic circuit 221, which is installed in the housing 210 and has an air gap; an armature 223, which has an end inserted into the air gap between the coil 222 and the magnetic circuit 221, and is magnetized by the magnetic field of the coil 222 to interact with the magnetic circuit; a rod 224, which is vertically connected relative to the armature 223; a diaphragm 225, which vibrates through the rod 224; and a pair of terminals 226, which are electrically connected to the coil 222 and extend to the outside of the housing 210 so as to be directly electrically connected to a flexible circuit board.

[0050] Here, a sound emission hole 212 for emitting the sound generated by the diaphragm 225 is formed on the upper surface of the housing 210 , that is, on the surface facing the diaphragm 225 .

[0051] The magnetic circuit 221 is installed in front of the coil 222 in the housing 210. The magnetic circuit 221 includes a pair of permanent magnets. The pair of permanent magnets are arranged up and down with a certain interval therebetween, and one end of the armature 223 is inserted into the interval between the permanent magnets, that is, the air gap between the permanent magnets.

[0052] The armature 223 has a U shape, one end of the armature 223 is positioned outside the coil 222 and the magnetic circuit 221, and the other end of the armature 223 is inserted into the coil 222 and the magnetic circuit 221. When current flows through the coil 222, the armature 223 is magnetized, and thus, the armature 223 vibrates up and down by mutual electromagnetic force with the magnetic circuit 221. The other end of the armature 223 extends further forward than the magnetic circuit 221, and the rod 224 is vertically connected to the extended end.

[0053] The lower end of the rod 224 is connected to the armature 223, and the upper end of the rod 224 is connected to the diaphragm 225, so that the diaphragm 225 vibrates together through the rod 224 when the armature 223 vibrates. The diaphragm 225 is formed by combining a TPU film-based diaphragm and a metal diaphragm, and the metal diaphragm may be formed of aluminum.

[0054] The bracket 300 has a shape that can cover the upper part of the dynamic driver 100, and the bracket 300 includes an upper surface 302 and a side wall 304, the upper surface 302 is formed at a certain distance from the diaphragm 160 to ensure the vibration space of the diaphragm 160 of the dynamic speaker 100, and the side wall 304 supports the upper surface 302. As described above, the bracket 300 includes a sound emission port 310 to emit the sound generated by the diaphragm 160 of the dynamic driver 100, and in this case, a plurality of sound emission ports 310 can also be provided as needed. Here, the balanced armature driver 200 is mounted on the upper surface of the bracket 300. To this end, the bracket 300 has a accommodating space 320 of the balanced armature driver on its upper surface. Here, the balanced armature driver 200 is arranged so that the diaphragm 225 is parallel to the upper surface 302 of the bracket 300. Here, parallel does not mean perfect geometric parallelism, but rather, the direction of the arrangement direction of the upper surface of the bracket 300 and the direction of the arrangement direction of the diaphragm 225 of the balanced armature driver 200 are parallel to each other, but there are still uneven or curved parts on the upper surface 302 of the bracket 300.

[0055] Therefore, a propagation direction of the sound emitted from the sound emission hole 212 formed on the upper surface of the housing 210 of the balanced armature driver 200 is the same as a propagation direction of the sound emitted from the sound emission hole 310 formed in the bracket 300 .

[0056] In other words, the shape of the outer surface of the balanced armature driver 200, that is, the shape of the housing 210 is generally a rectangular parallelepiped. Here, the side with the largest area among the six sides of the housing 210 of the balanced armature driver 200 is fixed to the bracket 300. Here, there are two surfaces with the same area, of which the surface enclosing the diaphragm 225 has the sound emitting hole 212, and the opposite surface of the diaphragm 225 is fixed to the upper surface 302 of the bracket 300.

[0057] Meanwhile, the bracket 300 may have an air pressure balance hole 340 on the upper surface 302 on the outside of the dynamic driver 100. The air pressure balance hole 340 allows air to flow between the front and rear of the hybrid receiver when the hybrid receiver is applied to the sealed earphone, thereby reducing the pressure difference between the ear canal and the outside to reduce ear pain. Here, a mesh 342 may be attached to the air pressure balance hole 340, and the ventilation amount and the degree of sound insulation may be adjusted by adjusting the air permeability of the mesh 342.

[0058] In addition, the hybrid receiver may further include a flexible circuit board 400 to transmit an electrical signal to each of the drivers 100 and 200, in which case there is an advantage in that the number of components can be reduced and the structure can be simplified by connecting all terminals (not shown, 226) of the drivers 100 and 200 to a single flexible circuit board 400. Here, the flexible circuit board 400 may be fixed to the bracket 300 by a separate fixing member or a coupling member.

[0059] In the case of a hybrid receiver, since different drivers 100 and 200 have separate magnetic circuits 120, 130, 140 and 221, respectively, mutual interference occurs between the magnetic fields of the drivers 100 and 200, which significantly affects the reduction of the sound pressure of the balanced armature driver 200. To this end, the direction of the magnetic poles of the magnetic circuit 221 of the balanced armature driver 200 should match the polarity of the permanent magnet 130 of the dynamic driver 100. In this case, in order to minimize the magnetic field interference between the drivers 100 and 200, a shielding member 330 for shielding magnetism may be installed between the dynamic driver 100 and the balanced armature driver 200. The shielding member 330 provided in the hybrid receiver according to the first embodiment of the present disclosure is of a panel type and is inserted into and fixed to the bracket 300. The shielding member 320 is manufactured using a plate material having a high magnetic permeability, such as pure iron, steel, soft iron, etc.

[0060] Figure 4 2 is a graph showing a comparison between the sound pressure of a balanced armature driver of a hybrid receiver having a fixing bracket for a driver according to the first embodiment of the present disclosure and the sound pressure of a balanced armature driver of a receiver in which no shielding member is installed. Figures 5 to 7 The sound pressures of Comparative Examples 1 to 3 shown in .

[0061] Figure 5 is a cross-sectional view of a first comparative example in which only a balanced armature driver is mounted on a fixed bracket for a driver. By mounting only the balanced armature driver 200 in a fixed bracket 300 for a driver, the sound pressure of the balanced armature driver 200 can be measured without the magnetic field of the dynamic driver affecting the sound pressure. Here, the balanced armature driver 200 includes a magnetic circuit 221 having a pair of permanent magnets as described above, and a yoke that can help form a magnetic flux flow is attached to the lower surface of the lower permanent magnet and the upper surface of the upper magnet. Here, the polarity arrangement of the upper permanent magnet and the lower permanent magnet can be the same. That is, when the N pole of the upper permanent magnet is arranged on the upper side and the S pole of the upper permanent magnet is arranged on the lower side, the N pole of the lower permanent magnet is arranged on the upper side and the S pole of the lower permanent magnet is arranged on the lower side.

[0062] Figure 6 2 is a cross-sectional view of a second comparative example in which the polarity of the magnetic circuit of the balanced armature driver and the polarity of the magnetic circuit of the dynamic driver are arranged in the same direction without installing a shielding member in a fixed bracket for the driver. Both the balanced armature driver 200 and the dynamic driver 100 are installed in a fixed bracket 300 for the driver. Here, a separate shielding member for shielding the magnetic field of the dynamic driver 100 is not installed in the fixed bracket 300 for the driver. In addition, the polarity direction of the permanent magnet 130 installed in the dynamic driver 100 matches the polarity direction of the magnetic circuit 221 of the balanced armature driver 200. That is, as in the first comparative example, the balanced armature driver 200 includes a magnetic circuit 221 having a pair of permanent magnets as described above, and the upper permanent magnet and the lower permanent magnet have the same polarity arrangement. In addition, the polarity arrangement of the permanent magnet 130 of the dynamic driver 100 is also formed in the same manner. That is, when an N pole is set at the upper part of the upper permanent magnet and an S pole is set at the lower part, and an N pole is set at the upper part of the lower permanent magnet and an S pole is set at the lower part, an N pole is set at the upper part of the dynamic driver 100 and an S pole is set at the lower part.

[0063] Figure 7 is a cross-sectional view of a third comparative example in which a shield member is mounted on a fixing bracket for a driver and polarities of a magnetic circuit of a balanced armature driver and a magnetic circuit of a dynamic driver are arranged in opposite directions.

[0064] Both the balanced armature driver 200 and the dynamic driver 100 are installed in a fixed bracket 300 for the driver. Here, a shielding member 320 for shielding the magnetic field of the dynamic driver 100 is installed in the fixed bracket 300 for the driver. In addition, the polarity direction of the permanent magnet 130 installed in the dynamic driver 100 is opposite to the polarity direction of the magnetic circuit 221 of the balanced armature driver 200. That is, as in the first comparative example, the balanced armature driver 200 includes a magnetic circuit 221 having a pair of permanent magnets as described above, the upper permanent magnet and the lower permanent magnet have the same polarity arrangement, and the permanent magnet 130 of the dynamic driver 100 and the magnetic circuit 221 of the balanced armature magnetic circuit 221 are arranged to have polarities opposite to each other. That is, when the N pole is set at the upper part of the upper permanent magnet and the S pole is set at the lower part, the N pole is set at the upper part of the lower permanent magnet and the S pole is set at its lower part, conversely, the S pole is set at the upper part of the dynamic driver 100 and the N pole of the dynamic driver 100 is set at the lower part.

[0065] In addition, the hybrid receiver according to the embodiment of the present disclosure is based on Figure 2According to the first embodiment of the present disclosure, the shielding member 320 is mounted on the bracket 300, and the permanent magnet 130 of the dynamic driver 100 and the magnetic circuit 221 of the balanced armature driver 200 are arranged to have the same polarity.

[0066] The sound pressure of the balanced armature drivers of the first comparative example, the second comparative example, the third comparative example and the example of the present disclosure was measured. In the first comparative example (BA only), only the balanced armature driver of the same specification was installed on a bracket without a dynamic driver. In the second comparative example (unshielded + positive polarity setting), the polarity of the magnetic circuit of the balanced armature driver and the polarity of the magnetic circuit of the dynamic driver were arranged in the same direction in the absence of a shielding member. In the third comparative example (in the shielding + negative polarity setting), the polarity of the magnetic circuit of the balanced armature driver and the polarity of the magnetic circuit of the dynamic driver were arranged in opposite directions in the presence of a shielding member. In the example of the present disclosure, the polarity of the magnetic circuit of the balanced armature driver and the polarity of the magnetic circuit of the dynamic driver are arranged in the same direction in the presence of a shielding member.

[0067] Therefore, it can be seen that the sound pressure of the balanced armature driver according to the embodiment of the present disclosure in the high sound range is almost similar to that of the balanced armature driver without the dynamic driver installed, and there is almost no loss due to mutual magnetic field interference.

[0068] Figure 8 is a cross-sectional view of a hybrid receiver having a fixing bracket for a driver according to a second embodiment of the present disclosure, and Fig. 9 is a perspective view of a hybrid receiver having a fixing bracket for a driver according to a second embodiment of the present disclosure.

[0069] The hybrid receiver according to the second embodiment of the present disclosure has the same functions and arrangements as those of the first embodiment except for the shape of the shield member 330a and the shape of the coupling portion of the bracket 300a coupled to the shield member 330a. Therefore, repeated descriptions thereof are omitted.

[0070] In the hybrid receiver according to the second embodiment of the present disclosure, the magnetic shield member 330 a for preventing mutual interference of magnetic fields between the dynamic driver 100 and the balanced armature driver 200 is a can type surrounding the balanced armature driver 200 .

[0071] As described above, the outer shape of the balanced armature driver 200 is approximately a rectangular parallelepiped. In this case, the magnetic shielding member 330a has a shape surrounding the lower surface and three side surfaces of the balanced armature driver 200. The terminal 226 for sending an electrical signal to the coil is generally provided on the surface having the narrowest area among the six surfaces of the balanced armature driver 200. Here, the balanced armature driver 200 is arranged so that the terminal 226 is located on the side closer to the outer periphery of the bracket 300a. The magnetic shielding member 330a surrounds the remaining four surfaces of the balanced armature driver 200 except for the upper surface on which the sound emitting hole 212 of the balanced armature driver 200 is formed and one side surface on which the terminal 226 is formed. That is to say. The magnetic shielding member 330a covers the lower surface and the three side surfaces. Therefore, the mutual magnetic field interference with the dynamic driver 100 can be further minimized.

[0072] The balanced armature driver 200 is mounted on the bracket 300a in a state where the pot-type magnetic shield member 330a is coupled to the balanced armature driver 200. Therefore, the balanced armature driver accommodating space of the bracket 300a has a shape corresponding to the magnetic shield member 330a.

[0073] Fig.10 2 is a view showing an earphone equipped with a hybrid receiver having a fixing bracket for a driver according to a second embodiment of the present disclosure. Figures 8 to 10 , the dynamic driver 100 and the balanced armature driver 200 connected to the bracket 300a are installed in the housing 510 of the earphone. The first cover 520 is connected to the rear of the housing 510, and in some cases, a second cover 530 may be additionally provided between the first cover 520 and the housing 510 to fix the hybrid receiver. The housing 510 may include a sound tube 512 on the upper side of the hybrid receiver for emitting the sound of the hybrid receiver. In addition, a vent 514 communicating with the outside is formed in the lower space of the hybrid receiver. A mesh 516 is attached to the vent 514, and the acoustic characteristics can be adjusted by adjusting the air permeability of the mesh 516.

[0074] Meanwhile, when the earphone has an ANC function, the feedback microphone 600 may be disposed in the sound tube 512 .

[0075] That is, when the mounting position of the balanced armature driver 200 is changed to the upper surface of the bracket 300a, the feedback microphone 600 can be installed in the sound tube 512, and since the size of the feedback microphone 600 is relatively small compared with the balanced armature driver 200, the length of the sound tube 512 can be reduced. In addition, compared with setting the balanced armature driver 200, the advantage of setting the feedback microphone 600 in the sound tube 512 having the same diameter is that the duct area for emitting the sound of the dynamic driver 100 is ensured.

[0076] In addition, since the dynamic driver 100 and the balanced armature driver 200 are assembled in the housing 510 of the earphone in a state where their positions in the bracket 300a are determined, the dynamic driver 100 and the balanced armature driver 200 can be assembled in an accurate position. Therefore, the deviation of the relative position between the dynamic driver 100 and the balanced armature driver 200 during the assembly process can be reduced. Since the relative position of the dynamic driver 100 and the balanced armature driver 200 is fixed, the acoustic phase deviation caused by the position deviation between the dynamic driver 100 and the balanced armature driver 200 can be prevented.

[0077] In addition, since the respective drivers 100 and 200 are assembled before they are assembled in the housing 510, there is an advantage in that the acoustic characteristics can be known in advance. After the drivers 100 and 200 are first assembled to the bracket 300a, the acoustic characteristics can be predetermined, and therefore, the final defect rate can be reduced.

[0078] Fig.11 is a cross-sectional view of a hybrid receiver having a fixing bracket for a driver according to a third embodiment of the present disclosure, Fig.12 is an exploded view of a hybrid receiver having a fixing bracket for a driver according to a third embodiment of the present disclosure, and Fig.13 is a perspective view of a hybrid receiver having a fixing bracket for a driver according to a third embodiment of the present disclosure.

[0079] The hybrid receiver with a fixed bracket according to the third embodiment of the present disclosure is the same as the first embodiment except for the coupling structure of the bracket 300b and the balanced armature driver 200. Therefore, the description of the same structure is omitted.

[0080] As described above, the dynamic driver 100 and the balanced armature driver 200 include voice coils and terminals 170 and 226 for transmitting electrical signals to the coils, respectively. Here, the terminal 170 of the dynamic driver 100 and the terminal 226 of the balanced armature driver 200 are aligned to be positioned in the same direction. Therefore, it is easy to install the flexible circuit board 400, which is electrically connected to the terminal 170 of the dynamic driver 100 and the terminal 226 of the balanced armature driver 200. In addition, when only one flexible circuit board 400 is electrically connected to both the terminal 170 of the dynamic driver 100 and the terminal 226 of the balanced armature driver 200, the size of the flexible circuit board 400 can be minimized.

[0081] In addition, as described above, the balanced armature driver 200 is a hexahedron, and the largest surface of the balanced armature driver 200 is parallel to the upper surface of the bracket 300b. Here, the sound emission hole 212 is formed on the upper surface of the balanced armature driver 200. Here, in the bracket 300b, the accommodating space 320b for accommodating the balanced armature driver 200 is formed in a protruding shape. The accommodating space 320b is defined by a cover portion 322b protruding from the upper surface of the bracket 300b, and the cover portion 322b surrounds at least a portion of the three side surfaces and the upper surface of the balanced armature driver 200. That is, the covering portion 322b covers the remaining three side surfaces of the balanced armature driver 200 except the side surface on which the terminal 226 is formed, and the covering portion 322b covers the upper surface of the balanced armature driver 200 but does not cover the sound emission hole 212.

[0082] The cover portion 322 b may surround the outer surface of the balanced armature driver 200 to protect the balanced armature driver 200 which is susceptible.

[0083] Fig.14 2 is a cross-sectional view schematically showing an earphone equipped with a hybrid receiver having a fixing bracket for a driver according to a third embodiment of the present disclosure. Figures 11 to 14 When the hybrid receiver is installed in the housing 510, the upper space of the hybrid receiver and the lower space of the hybrid receiver are blocked by the hybrid receiver. Therefore, the air flow between the upper space and the lower space of the hybrid receiver is blocked, and a pressure difference occurs between the inside of the ear canal in which the earphone is worn and the outside blocked by the earphone when in use, resulting in deafness and fatigue accumulation on the eardrum.

[0084] In the hybrid receiver according to the present disclosure, as described above, the bracket 300b may have an air pressure balance hole 340b on the outside of the dynamic driver 100. The air pressure balance hole 340b allows air to flow between the upper and lower parts of the hybrid receiver when the hybrid receiver is applied to a sealed earphone, thereby reducing the pressure difference between the ear canal and the outside, thereby reducing ear pain. Here, the mesh 342 may be attached to the air pressure balance hole 340b, and the ventilation amount and the degree of sound insulation may be adjusted by adjusting the air permeability of the mesh 342.

[0085] A vent hole 514 communicating with the outside is formed in the housing 510 defining the lower space of the mixing receiver. In this case, a mesh (not shown) may also be attached to the vent hole 514, and the acoustic characteristics may be adjusted by adjusting the air permeability of the mesh (not shown).

[0086] Fig.15 is a cross-sectional view of a hybrid receiver having a fixing bracket for a driver according to a fourth embodiment of the present disclosure, and Fig.16 is a perspective view of a hybrid receiver having a fixing bracket for a driver according to a fourth embodiment of the present disclosure.

[0087] The hybrid receiver according to the fourth embodiment of the present disclosure is the same as the third embodiment except that the components serving as the cover portion in the third embodiment are separately formed as separate members. Therefore, description of the same components is omitted to avoid redundant description.

[0088] The hybrid receiver according to the fourth embodiment of the present disclosure further includes a protective cover 250 surrounding the outer surface of the balanced armature driver 200. The protective cover 250 covers the three side surfaces and the upper surface of the balanced armature driver 200 except the surface on which the terminals are formed, but may cover five surfaces up to the lower surface. The protective cover 250 may have a hole 252 in a position corresponding to the sound emission hole of the balanced armature driver 200 to emit the sound generated by the balanced armature driver 200.

[0089] The balanced armature driver 200 is fixed to the bracket 300c together with the protective cover 250 coupled thereto. In this case, the protective cover 250 may be formed of a material capable of absorbing shock, such as rubber, soft plastic, or silicone.

Claims

1. A hybrid receiver having a fixed support for a driver and comprising a combination of different types of drivers, the hybrid receiver comprising: a dynamic driver including a frame, a magnetic circuit, a voice coil vibrated by the magnetic circuit and mutual electromagnetic force, and a diaphragm attached to the voice coil to vibrate; A balanced armature driver, the balanced armature driver comprising a housing, a magnetic circuit, a coil, an armature, a rod, and a diaphragm vibrating through the rod, the armature being magnetized by a magnetic field of the coil to interact with the magnetic circuit, the rod being vertically connected to the armature; a bracket coupled to an upper portion of the diaphragm of the dynamic driver and having a sound emission port configured to emit sound of the dynamic driver, wherein the bracket has a balanced armature driver accommodating space on an upper surface of the bracket, the balanced armature driver is arranged so that the diaphragm is parallel to the upper surface of the bracket, and the housing has a sound emission hole above the diaphragm; as well as A shielding member is installed between the balanced armature driver and the dynamic driver and is configured to shield magnetism.

2. The hybrid receiver according to claim 1, wherein: The shielding member is mounted on the upper surface of the bracket.

3. The hybrid receiver according to claim 1, wherein: The shield member surrounds the balanced armature driver.

4. A hybrid receiver having a fixed support for a driver and comprising a combination of different types of drivers, the hybrid receiver comprising: a dynamic driver including a frame, a magnetic circuit, a voice coil vibrated by the magnetic circuit and mutual electromagnetic force, and a diaphragm attached to the voice coil to vibrate; A balanced armature driver, the balanced armature driver comprising a housing, a magnetic circuit, a coil, an armature, a rod, and a diaphragm vibrating through the rod, the armature being magnetized by a magnetic field of the coil to interact with the magnetic circuit, the rod being vertically connected to the armature; as well as a bracket coupled to an upper portion of the diaphragm of the dynamic driver and having a sound emitting port configured to emit sound of the dynamic driver, The bracket has a balanced armature driver accommodating space on the upper surface of the bracket, the balanced armature driver is arranged so that the diaphragm is parallel to the upper surface of the bracket, and the shell has a sound emitting hole above the diaphragm. The dynamic driver and the balanced armature driver are arranged such that the magnetic polarity direction of the dynamic driver matches the magnetic polarity direction of the balanced armature driver.

5. A hybrid receiver having a fixed support for a driver and comprising a combination of different types of drivers, the hybrid receiver comprising: a dynamic driver including a frame, a magnetic circuit, a voice coil vibrated by the magnetic circuit and mutual electromagnetic force, and a diaphragm attached to the voice coil to vibrate; A balanced armature driver, the balanced armature driver comprising a housing, a magnetic circuit, a coil, an armature, a rod, and a diaphragm vibrating through the rod, the armature being magnetized by a magnetic field of the coil to interact with the magnetic circuit, the rod being vertically connected to the armature; as well as a bracket coupled to an upper portion of the diaphragm of the dynamic driver and having a sound emitting port configured to emit sound of the dynamic driver, The bracket has a balanced armature driver accommodating space on the upper surface of the bracket, the balanced armature driver is arranged so that the diaphragm is parallel to the upper surface of the bracket, and the shell has a sound emitting hole above the diaphragm. The bracket has an air pressure balance hole, and the air pressure balance hole is connected with the rear space of the dynamic driver on the outer side of the dynamic driver.

6. The hybrid receiver of claim 5, further comprising: A mesh is attached to the air pressure equalization hole.

7. A hybrid receiver having a fixed support for a driver and comprising a combination of different types of drivers, the hybrid receiver comprising: a dynamic driver including a frame, a magnetic circuit, a voice coil vibrated by the magnetic circuit and mutual electromagnetic force, and a diaphragm attached to the voice coil to vibrate; A balanced armature driver, the balanced armature driver comprising a housing, a magnetic circuit, a coil, an armature, a rod, and a diaphragm vibrating through the rod, the armature being magnetized by a magnetic field of the coil to interact with the magnetic circuit, the rod being vertically connected to the armature; as well as a bracket coupled to an upper portion of the diaphragm of the dynamic driver and having a sound emitting port configured to emit sound of the dynamic driver, The bracket has a balanced armature driver accommodating space on the upper surface of the bracket, the balanced armature driver is arranged so that the diaphragm is parallel to the upper surface of the bracket, and the shell has a sound emitting hole above the diaphragm. wherein the dynamic driver and the balanced armature driver each include a terminal for sending an electrical signal to the voice coil and the coil, and Wherein, the terminals of the balanced armature driver and the terminals of the dynamic driver are aligned to be positioned in the same direction.

8. The hybrid receiver of claim 7, further comprising: A flexible circuit board is electrically connected to the terminals of the dynamic driver and the terminals of the balanced armature driver and is fixed to the bracket.

9. A hybrid receiver having a fixed support for a driver and comprising a combination of different types of drivers, the hybrid receiver comprising: a dynamic driver including a frame, a magnetic circuit, a voice coil vibrated by the magnetic circuit and mutual electromagnetic force, and a diaphragm attached to the voice coil to vibrate; A balanced armature driver, the balanced armature driver comprising a housing, a magnetic circuit, a coil, an armature, a rod, and a diaphragm vibrating through the rod, the armature being magnetized by a magnetic field of the coil to interact with the magnetic circuit, the rod being vertically connected to the armature; as well as a bracket coupled to an upper portion of the diaphragm of the dynamic driver and having a sound emitting port configured to emit sound of the dynamic driver, The bracket has a balanced armature driver accommodating space on the upper surface of the bracket, the balanced armature driver is arranged so that the diaphragm is parallel to the upper surface of the bracket, and the shell has a sound emitting hole above the diaphragm. Wherein, the terminal of the balanced armature driver for sending an electrical signal to the coil is mounted on a side surface close to the periphery of the bracket, wherein the bracket surrounds the outer surface of the housing of the balanced armature driver, and Wherein, the terminal of the balanced armature driver and the sound emitting hole of the housing are exposed to the outside of the bracket.

10. A hybrid receiver having a fixed support for a driver and comprising a combination of different types of drivers, the hybrid receiver comprising: a dynamic driver including a frame, a magnetic circuit, a voice coil vibrated by the magnetic circuit and mutual electromagnetic force, and a diaphragm attached to the voice coil to vibrate; A balanced armature driver, the balanced armature driver comprising a housing, a magnetic circuit, a coil, an armature, a rod, and a diaphragm vibrating through the rod, the armature being magnetized by a magnetic field of the coil to interact with the magnetic circuit, the rod being vertically connected to the armature; a bracket coupled to an upper portion of the diaphragm of the dynamic driver and having a sound emission port configured to emit sound of the dynamic driver, wherein the bracket has a balanced armature driver accommodating space on an upper surface of the bracket, the balanced armature driver is arranged so that the diaphragm is parallel to the upper surface of the bracket, and the housing has a sound emission hole above the diaphragm; as well as A protective cover is configured to surround the balanced armature driver.

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