TWM455315U - Dual-band coaxial earphone structure - Google Patents

Description

Dual frequency coaxial earphone structure

This creation is about a headphone structure, especially a dual-frequency coaxial earphone structure.

As shown in FIG. 1 , the earphone housing A10 is provided with a signal line A1, a diaphragm A2, a permanent magnet A3, a voice coil A4, a magnetic conductive member A5 and a yoke A6, wherein the voice coil A4 is assembled. On the diaphragm A2 and correspondingly surrounding the periphery of the permanent magnet A3, but maintaining a radial gap with the magnetic conductive member A5, the permanent magnet A3 is interposed between the magnetic conductive member A5 and the yoke A6.

The signal line A1 is electrically connected to the voice coil A4. When the audio signal is input to the voice coil A4 through the signal line A1, the voice coil A4 generates a magnetic field by the electromagnetic effect, and the magnetic field interacts with the magnetic member A5. The diaphragm A2 is vibrated to convert the audio signal into an audio sound wave output.

In the conventional earphone structure, the general audio signal includes high and low audio parts, so it vibrates on the same diaphragm A2, and simultaneously generates high and low audio sound waves, but has different wavelengths and amplitudes due to high and low audio sound waves. The characteristics, such as the fact that only the same diaphragm A2 cannot clearly distinguish different characteristics, are often disadvantageous in that high and low audio intermodulation distortions are often generated, so that the sound cannot be clearly displayed. If you want to put high and low speakers to play high and low audio signals, it will make the size of the earphones larger, and it is not suitable for the current earphone size.

In view of this, the present invention proposes an embodiment of a dual-frequency coaxial earphone structure, comprising: an earphone housing, a moving coil type speaker unit, and a moving iron speaker unit. The earphone housing has a receiving space and an sound outlet, and the receiving space is connected with the sound outlet; the moving coil type sound unit is located in the receiving space, and includes a moving coil diaphragm and a sound guiding member, and the moving coil The diaphragm is disposed facing the sound outlet and includes a central diaphragm portion, the sound guide member includes a sound guiding hole, and the sound guiding hole corresponds to the central diaphragm portion; the moving iron speaker unit is located in the sound guiding hole, and includes an armature type The diaphragm and the armature diaphragm correspond to the moving coil diaphragm, and the high-frequency sound waves generated by the armature diaphragm are transmitted to the central diaphragm portion to supplement the high-frequency extension of the moving coil diaphragm.

According to the dual-frequency coaxial earphone structure of the present invention, the moving iron type speaker unit can be fixed in the sound guiding hole of the moving coil type sound unit to combine the two, because the center of the armature diaphragm is integrated Corresponding to the center of the moving coil diaphragm, the audio of the moving iron speaker unit can cause the central diaphragm portion of the moving coil speaker unit to be enabled, and the audio of the moving coil speaker unit is in phase and synchronized. The output can separate the different audios of the moving iron speaker unit and the moving coil speaker unit, effectively solving the problem of high and low audio intermodulation distortion, and simultaneously minimizing the volume of the earphone.

The detailed features and advantages of the present invention are described in detail below in the embodiments, which are sufficient to enable any skilled artisan to understand the technical contents of the present invention and implement it according to the contents, the scope of the patent application and the drawings. Anyone familiar with the relevant art can easily understand the purpose and advantages of this creation.

Figures 2 and 3 illustrate a first embodiment of the present invention. Figure 2 is an exploded view, and Figure 3 is a schematic cross-sectional view.

In the first embodiment of the present invention, the dual-frequency coaxial earphone structure 1 comprises: an earphone housing 2, a moving coil type speaker unit 3, and a moving iron speaker unit 4.

The earphone housing 2 is mainly composed of a base body 21 and a front cover 22. The base body 21 has a sound outlet 211, and an accommodation space 212 is disposed therein. The accommodation space 212 communicates with the sound outlet 211. The front cover 22 It is disposed at the sound outlet 211.

The moving coil type speaker unit 3 is located in the accommodating space 212, and includes a moving coil diaphragm 31 and a sound guiding member 32. The moving coil diaphragm 31 is disposed facing the sound outlet 211 and includes a central diaphragm portion 311. The member 32 is hollow, has a sound guiding hole 321 therein, and the sound guiding hole 321 corresponds to the central diaphragm portion 311, wherein the sound guiding hole 321 preferably corresponds to a central position of the central diaphragm portion 311.

The movable iron speaker unit 4 is fixed in the sound guiding hole 321 of the moving coil type speaker unit 3 and integrated into one body. In other words, one end of the moving coil type speaker unit 3 faces the sound outlet 211, and is fixed therein. Moving iron speaker unit 4. The moving iron speaker unit 4 includes an armature diaphragm 41 in which the armature diaphragm 41 is located in the sound guiding hole 321 and the moving diaphragm 31 is located at one end of the sound guiding member 321 so that the armature diaphragm 41 and the moving coil diaphragm 31 have an inner and outer structural state with respect to the sound guiding member 32. Further, the sound guiding hole 321 preferably corresponds to the central position of the armature diaphragm 41 such that the center of the armature diaphragm 41 corresponds to the center of the moving diaphragm 31. In addition, as shown in FIG. 3, the center of the armature diaphragm 41 and the center of the moving coil diaphragm 31 are preferably located on the axis of the sound guiding hole 321, but this creation is not limited thereto. .

Therefore, the high-frequency sound waves generated by the armature diaphragm 41 are transmitted to the central diaphragm portion 311 to supplement the high-frequency extension of the moving coil diaphragm 31, and the moving iron speaker unit 4 The audio of the moving coil type speaker unit 3 is formed in phase and synchronously output, so that the different audios of the moving iron type speaker unit 4 and the moving coil type speaker unit 3 can be separated, thereby effectively solving the problem of high and low audio intermodulation distortion. It can also minimize the size of the earphones.

In the present embodiment, the moving coil type speaker unit 3 further includes: a washer 33, an annular magnet 34, an outer yoke 35, a retaining ring 36, a moving coil type voice coil 38, and a sound resisting material 39. The annular magnet 34 is located on the outer yoke 35, and the washer 33 is located on the surface of the annular magnet 34, and is riveted with the sound guiding member 32, the annular magnet 34 and the outer yoke 35 (for example, the third Figure shows). The fixing ring 36 is disposed on the outer yoke 35 to fix the moving diaphragm 31. The moving coil type voice coil 38 is disposed on the moving coil diaphragm 31, and is sleeved inside the washer 33, and the outer edge portion of the moving coil type voice coil 38 is located on the outer yoke 35 (as shown in FIG. 3). . The acoustic resistance material 39 is provided on the outer edge portion of the outer yoke 35.

In the present embodiment, the moving iron speaker unit 4 further includes a housing 42, an armature 43, an armature magnet 44, an armature voice coil 45, and a link 46. The armature magnet 44 is disposed side by side with the armature voice coil 45 in the housing 42. The armature 43 is U-shaped, one end extends into the armature magnet 44 and the armature voice coil 45, and the other end is located in the electric The side of the pivotal magnet 44 and the armature voice coil 45. The link member 46 connects the armature magnet 44 and the armature diaphragm 41, and drives the armature diaphragm 41 to generate sound waves. Further, the two ends of the armature diaphragm 41 respectively have a suspension 411 which is fixed to the wall surface of the casing 42 so that the armature diaphragm 41 can be fixed in the casing 42. Furthermore, the housing 42 may be provided with a sound hole 421 corresponding to the central position of the armature diaphragm 41.

In addition, the moving coil speaker unit 3 is provided with a circuit board 6 on the outer yoke 35, and the circuit board 6 is provided with a frequency dividing circuit for separating the mixing input signal of the signal line 7. The high frequency output signal and the low frequency output signal are used to provide the armature voice coil 45 and the moving coil voice coil 38 respectively.

The foregoing description of the structure of the moving coil type speaker unit 3 and the moving iron type speaker unit 4 is merely an example, and the present invention is not limited thereto.

Figures 4 and 5 illustrate a second embodiment of the present invention. Fig. 4 is an exploded perspective view, and Fig. 5 is a schematic cross-sectional view.

The difference between this embodiment and the first embodiment lies in the composition of the moving coil type speaker unit. In the present embodiment, the moving coil type speaker unit 5 is mainly composed of a moving coil diaphragm 51, a sound guiding member 52, an inner yoke 53, an annular magnet 54, an outer yoke 55, a fixing ring 56, and a moving coil sound. Circle 58 is composed.

The moving diaphragm 51 is disposed facing the sound outlet 211 and includes a central diaphragm portion 511. The sound guiding member 52 is hollow, has a sound guiding hole 521 therein, and the sound guiding hole 521 corresponds to the central diaphragm portion 511. Wherein, the sound guiding hole 521 preferably corresponds to a central position of the central diaphragm portion 511. The sound guide 52 is disposed on the inner yoke 53 and the annular magnet 54 is located between the annular magnet 54 and the outer yoke 55.

Here, the inner yoke iron 53 has a hollow inner shaft tube 531, and the outer yoke iron 55 has a central hole 551. Since the outer diameter of the inner shaft tube 531 is smaller than the inner diameter of the inner shaft tube 531, the inner shaft tube 531 can be sequentially The central hole 551 protrudes into the annular magnet 54 and the outer yoke 55. In addition, the sound guiding holes 521 of the sound guiding member 52 coaxially correspond to the inner shaft tube 531 and communicate with each other. Here, the inner shaft tube 531 can be regarded as an extension of the sound guiding member 52, in other words, the hollow portion of the inner shaft tube 531 is A part of the sound guiding hole 521 is formed, and a moving iron type speaker unit 4 is fixed therein.

The fixing ring 56 is assembled on the outer yoke 55 to fix the moving diaphragm 51. The moving coil type voice coil 58 is disposed on the movable diaphragm 51 and extends axially between the outer yoke 55 and the inner yoke 53.

As shown in FIG. 5, the axis lines of the sound guiding holes 521 correspond to the central positions of the moving coil diaphragm 51 and the armature diaphragm 41, respectively, wherein the center of the armature diaphragm 41 and the moving coil The center of the diaphragm 51 is preferably located on the axis of the sound guiding hole 521, but the present invention is not limited thereto.

In addition, the moving iron speaker unit 4 is provided with a circuit board 6 on its side, and the circuit board 6 is provided with a frequency dividing circuit for separating the mixing input signal of the signal line 7 into a high frequency output signal and a low frequency output signal. To provide the armature voice coil 45 and the moving coil voice coil 58 respectively.

The foregoing description is directed to the configuration of the moving coil type speaker unit 5 and the arrangement of the circuit board 6. The present invention is not limited thereto.

In summary, according to the dual-frequency coaxial earphone structure of the present invention, the movable iron speaker unit can be fixed in the sound guiding hole of the moving coil type speaker unit, and the two are integrated into one body, due to the armature type The center of the diaphragm corresponds to the center of the moving diaphragm, so that the audio of the moving iron speaker unit can cause the central diaphragm unit of the moving coil speaker unit to be activated, and the moving coil type speaker unit The audio forms the same phase and outputs synchronously, so the different audios of the moving iron speaker unit and the moving coil speaker unit can be separated, effectively solving the problem of high and low audio intermodulation distortion, and the volume of the earphone can be minimized.

Although the present invention has been described above in the foregoing embodiments, it is not intended to limit the present invention, and any skilled artisan will be able to do so without departing from the spirit and scope of the present invention. The scope of patent protection of this creation is subject to the definition of the scope of the patent application attached to this specification.

1‧‧‧Double-frequency coaxial headphone structure

2‧‧‧ headphone housing

21‧‧‧ body

211‧‧‧ sound outlet

212‧‧‧ accommodating space

22‧‧‧ front cover

3‧‧‧ moving coil speaker unit

31‧‧‧ moving coil diaphragm

311‧‧‧Central Diaphragm Department

32‧‧‧Guide parts

321‧‧‧Guide hole

33‧‧‧华司

34‧‧‧Ring magnet

35‧‧‧ outer yoke

36‧‧‧Fixed ring

38‧‧‧ moving coil voice coil

39‧‧‧Sound resistance material

4‧‧‧ moving iron speaker unit

41‧‧‧ Armature diaphragm

411‧‧‧ hanging edge

42‧‧‧Shell

421‧‧‧ sound hole

43‧‧‧Architecture

44‧‧‧ armature magnet

45‧‧‧ armature voice coil

46‧‧‧ linkages

5‧‧‧ moving coil speaker unit

51‧‧‧ moving coil diaphragm

511‧‧‧Central Diaphragm Department

52‧‧‧Guide parts

521‧‧‧Guide hole

53‧‧‧ yoke

531‧‧‧Inner shaft tube

54‧‧‧Ring magnet

55‧‧‧ outer yoke

551‧‧‧Central hole

56‧‧‧Fixed ring

58‧‧‧ moving coil voice coil

6‧‧‧Circuit board

7‧‧‧Signal line

A10‧‧‧ headphone housing

A1‧‧‧ signal line

A2‧‧‧ diaphragm

A3‧‧‧ permanent magnet

A4‧‧‧ voice coil

A5‧‧‧magnetic parts

A6‧‧‧ yoke

Figure 1 is a schematic diagram of a conventional earphone structure.

Figure 2 is an exploded perspective view of the first embodiment of the creation.

Figure 3 is a schematic cross-sectional view showing the first embodiment of the creation.

Figure 4 is an exploded perspective view of the second embodiment of the creation.

Figure 5 is a schematic cross-sectional view showing a second embodiment of the creation.

1‧‧‧Double-frequency coaxial headphone structure

2‧‧‧ headphone housing

21‧‧‧ body

211‧‧‧ sound outlet

212‧‧‧ accommodating space

22‧‧‧ front cover

3‧‧‧ moving coil speaker unit

31‧‧‧ moving coil diaphragm

311‧‧‧Central Diaphragm Department

32‧‧‧Guide parts

321‧‧‧Guide hole

33‧‧‧华司

34‧‧‧Ring magnet

35‧‧‧ outer yoke

36‧‧‧Fixed ring

38‧‧‧ moving coil voice coil

39‧‧‧Sound resistance material

4‧‧‧ moving iron speaker unit

41‧‧‧ Armature diaphragm

411‧‧‧ hanging edge

42‧‧‧Shell

421‧‧‧ sound hole

43‧‧‧Architecture

44‧‧‧ armature magnet

45‧‧‧ armature voice coil

46‧‧‧ linkages

6‧‧‧Circuit board

7‧‧‧Signal line

Claims (12)

A dual-frequency coaxial earphone structure includes: a headphone housing having an accommodating space and an output port, wherein the accommodating space is connected to the sound outlet; and a moving coil type speaker unit is located in the accommodating unit The space includes a moving coil diaphragm and a sound guiding member, and the moving coil diaphragm is disposed facing the sound outlet and includes a central diaphragm portion, the sound guiding member includes a sound guiding hole, and the sound guiding hole Corresponding to the central diaphragm portion; and a moving iron speaker unit, located in the sound guiding hole, comprising an armature diaphragm, the armature diaphragm corresponding to the moving coil diaphragm, the armature type The high-frequency sound waves generated by the diaphragm are transmitted to the central diaphragm portion to supplement the high-frequency extension of the moving coil diaphragm. The dual-frequency coaxial earphone structure according to claim 1, wherein a center of the armature diaphragm corresponds to a center of the moving coil diaphragm. The dual-frequency coaxial earphone structure according to claim 2, wherein a center of the armature diaphragm and a center of the moving coil diaphragm are located on an axis of the sound guiding hole. The dual-frequency coaxial earphone structure according to claim 1, wherein the moving coil type speaker unit further comprises a washer, an annular magnet and an outer yoke, and the annular magnet is located on the outer yoke. The division is located on the surface of the annular magnet. The dual-frequency coaxial earphone structure of claim 4, wherein the sound guiding member rives the washer, the annular magnet and the outer yoke. The dual-frequency coaxial earphone structure according to claim 4, wherein the moving coil type sounding single The element further comprises a fixing ring set on the outer yoke iron. The dual-frequency coaxial earphone structure according to claim 4, wherein the moving coil type speaker unit further comprises a moving coil type voice coil, which is disposed on the moving coil type diaphragm and sleeves the washer. The dual-frequency coaxial earphone structure of claim 1, wherein the moving coil speaker unit further comprises an inner yoke, an annular magnet and an outer yoke, the inner yoke comprising an inner shaft tube, The outer yoke iron includes a central hole, and the inner shaft tube projects into the central hole of the annular magnet and the outer yoke. The dual-frequency coaxial earphone structure of claim 8, wherein the sound guiding hole coaxially corresponds to the inner shaft tube. The dual-frequency coaxial earphone structure of claim 8, wherein the moving coil type speaker unit further comprises a fixing ring disposed on the outer yoke. The dual-frequency coaxial earphone structure according to claim 1, wherein the moving iron speaker unit further comprises an armature, an armature magnet and an armature voice coil, and a part of the armature extends into the armature A magnet and the armature voice coil. The dual-frequency coaxial earphone structure of claim 11, wherein the moving iron speaker unit further comprises a linkage connecting the armature magnet and the armature diaphragm.