CN204598258U - Multiple sound unit earphone - Google Patents

Abstract

The utility model provides a multi-sounding unit earphone, comprising: a front shell and a back cover combined together, and at least three moving iron sounding units and at least one moving coil sounding unit are accommodated in a cavity surrounded by the front shell and the back cover ; Among them, the back cover is provided with a fixing slot for accommodating and fixing the moving iron sounding unit and a protrusion surrounding the fixing slot; the protrusion, the fixing slot and the back cover are integrated; The space surrounded by the former forms the front acoustic cavity, and the fixing grooves are evenly distributed in the front acoustic cavity, and the moving coil sound unit and the moving iron sound unit in the front acoustic cavity are vertically separated by a certain distance; in the cavity surrounded by the front shell and the rear cover , except the space occupied by the front cavity, other spaces form the back cavity. The earphone with multiple sounding units provided by the utility model can improve the sound quality of the earphone, extend the high-frequency characteristics of the sound quality, and reduce the distortion of the sound quality.

Description

Multi-Sound Unit Headphones

technical field

The utility model relates to the technical field of earphones, in particular to a multi-sounding unit earphone.

Background technique

Earphones are common audio equipment that people can use for leisure and entertainment. Most of our commonly used earphones are dynamic earphones.

For transmission earphones, most of them are dynamic earphones. Due to the influence of production process, materials and structural performance, the traditional earphones have poor sound quality and cannot meet people's needs.

Therefore, how to design an earphone with excellent acoustic performance has become an urgent problem to be solved in the technical field of earphones.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a multi-sound unit earphone to solve the problem of poor sound quality of traditional earphones.

The multi-sounding unit earphone provided by the utility model includes a front shell and a back cover combined together, and at least three moving iron sounding units and at least one moving coil sounding unit are accommodated in the cavity surrounded by the front shell and the back cover; ,

The back cover is provided with a fixing slot for accommodating and fixing the moving iron sounding unit and a protrusion surrounding the fixing slot; wherein, the protrusion, the fixing slot and the back cover are in one structure; the moving coil sounding unit is fastened on the protrusion, and both The enclosed space forms the front acoustic cavity, and the fixing grooves are evenly distributed in the front acoustic cavity, and the moving coil sound unit and the moving iron sound unit in the front acoustic cavity are vertically separated by a certain distance; in the cavity surrounded by the front shell and the rear cover, Remove the space occupied by the front acoustic cavity, and other spaces form the rear acoustic cavity.

In addition, a preferred structure is that a damping hole connecting the front acoustic cavity and the rear acoustic cavity is opened on the moving coil sound unit.

In addition, a preferred structure is that a welding pad is provided at a position where no damping hole is opened on the moving coil sound unit.

Furthermore, a preferred structure is that the cross section of the moving coil sound unit is circular, and it is buckled on the protrusion of the back cover by bonding.

In addition, the preferred structure is that the part of the rear cover forming the front acoustic cavity is provided with a sound outlet.

In addition, the preferred structure is that both the moving iron sounding unit and the fixing groove are square, and the moving iron sounding unit is fixed in the fixing groove by bonding.

In addition, the preferred structure is that the moving coil sound unit includes a vibration system and a magnetic circuit system; wherein the vibration system includes a diaphragm and a voice coil combined with one side of the diaphragm; the magnetic circuit system includes a washer, a magnet and a basin combined in sequence The frame, the space between the side wall of the pot frame and the washer and the magnet forms a magnetic gap, and the voice coil is arranged in the magnetic gap.

In addition, the preferred structure is that the number of moving iron sounding units is 3 or 5.

In addition, the preferred structure is that the vertical distance between the moving coil sound unit and the moving iron sound unit in the front acoustic cavity is at least 1 mm.

Furthermore, the preferred structure is that the moving iron sound unit includes a shell, a vibration system and a magnetic circuit system assembled in the shell, a fixing piece and a sounding tube arranged on one side of the shell, and the vibration system includes a The sound film, the magnetic circuit system includes the coil fixed on the fixed part, the circular magnetic circuit fixed on the fixed part and the reed, the reed passes through the center of the coil and enters the circular magnetic circuit, and the magnetic circuit system passes through a metal The wire is connected to a vibration system.

Using the above-mentioned multi-sounding unit earphone provided by the utility model, by arranging the moving iron sounding unit and the moving coil sounding unit on different horizontal planes, a three-dimensional placement space is formed inside the earphone to realize the complementarity of two different sounding units in audio frequency, Thereby improving the sound quality of the earphone, extending the high-frequency characteristics of the sound quality, and reducing the sound quality distortion.

Description of drawings

By referring to the following description combined with the accompanying drawings and the content of the claims, and with a more comprehensive understanding of the utility model, other objectives and results of the utility model will be more clear and easy to understand. In the attached picture:

1 is a schematic diagram of the overall structure of a multi-sounding unit earphone according to an embodiment of the present invention;

2 is an enlarged schematic diagram of a partial structure of a multi-sounding unit earphone according to an embodiment of the present invention;

Fig. 3 is the sectional view of Fig. 1;

Fig. 4 is a schematic structural diagram of a moving coil sound unit according to an embodiment of the present invention;

Fig. 5 is a structural schematic diagram of a moving iron sounding unit according to an embodiment of the present invention;

Fig. 6 is a combined schematic diagram of a moving iron sounding unit and a moving coil sounding unit according to an embodiment of the present invention;

Figure 7 is a frequency response curve of a traditional earphone;

FIG. 8 is a frequency response curve of a multi-sound unit earphone according to an embodiment of the present invention.

The reference signs include: front shell 1, rear cover 2, moving iron sounding unit 3, moving coil sounding unit 4, fixing groove 5, protrusion 6, basin frame 7, damping hole 8, welding pad 9, sounding hole 10. Voice coil 11, diaphragm 12, washer 13, magnet 14, upper shell 15a, lower shell 15b, fixing piece 16, sounding tube 17, sound membrane 18, coil 19, circular magnetic circuit 20, reed 21 , metal wire 22, connection wire 23.

The same reference numerals indicate similar or corresponding features or functions throughout the drawings.

Detailed ways

Specific embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

FIG. 1 , FIG. 2 and FIG. 3 respectively show the structure of the multi-sound unit earphone according to the embodiment of the present invention, the partially enlarged structure, and the cross-sectional structure of FIG. 1 .

As shown in Fig. 1, Fig. 2 and Fig. 3, the multi-sounding unit earphone provided by this embodiment is a headset, which includes a front shell 1, a rear cover 2, a moving iron sounding unit 3 and a moving coil sounding unit 4, the front The shell 1 and the back cover 2 are combined to form a cavity, the moving iron sounding unit 3 and the moving coil sounding unit 4 are both accommodated in the cavity, and the back cover 3 is provided with a fixing groove 5, which is used to accommodate The moving iron sounding unit 3 is fixed, and the rear cover 2 is also provided with a protrusion 6 surrounding the fixing groove 5 .

The back cover 2 includes two faces, one facing the front shell 1 and the other facing away from the front shell 1. The fixing groove 5 is arranged on the face of the back cover 2 facing the front shell 1, that is to say, the fixing groove 5 is arranged on the front shell 1. In the cavity surrounded by the shell 1 and the rear cover 2 , the protrusion 6 is also arranged on the surface of the rear cover 2 facing the front shell 1 , and is also located in the cavity surrounded by the front shell 1 and the rear cover 2 .

The purpose of setting the protrusion 6 is to fix and support the moving coil sounding unit 4, that is, the moving coil sounding unit 4 is fastened on the protrusion 6, and the height of the protrusion 6 must satisfy that after the moving coil sounding unit 4 is fastened on the protrusion 6, There is no contact with the moving iron sounding unit 3, so that the moving coil sounding unit 4 and the moving iron sounding unit 3 are on different horizontal planes, that is, the moving iron sounding unit 3 is close to the rear cover 2, and the moving coil sounding unit 4 is close to the front shell 1. This setting method can integrate the sound quality of the two sound emitting units to realize the complementarity of their respective sound qualities, thereby improving the sound quality of the earphone as a whole and making the sound quality of the earphone more full, smooth and delicate.

The cross-sections of the moving coil sound unit 4 and the protrusion 6 shown in FIG. 2 are both circular, and in practical application scenarios, the two can be arranged in different shapes that cooperate with each other.

The fixed groove 5 and the moving iron sounding unit 3, the protrusion 6 and the moving coil sounding unit 4 are all bonded and combined by glue, and the glue can not only play a fixing role but also play a sealing role.

The moving coil sound unit 4 is fastened on the protrusion 6 to form a cavity, which is the front cavity, and in the cavity surrounded by the front shell 1 and the rear cover 2, the space occupied by the front cavity is removed. The other space is the rear acoustic cavity, that is to say, the moving coil sound unit 4 divides the cavity surrounded by the front shell 1 and the rear cover 2 into a front acoustic cavity and a rear acoustic cavity.

A sound outlet 10 is provided on the part of the rear cover 2 forming the rear sound cavity, in other words, a sound outlet 10 is provided on the part surrounded by the protrusion 6 on the rear cover 2, which is used to connect the moving iron sound unit 3 and the moving coil sound unit The sound generated by 4 is transmitted to the human ear; wherein, in order to facilitate product production, the fixing groove 5 is integrally injection-molded with the back cover 2 and the protrusion 6 .

The number of fixing grooves 5 provided on the back cover 2 is at least one, and its number is the same as that of the moving iron sound unit 3, preferably 3-5. The fixing grooves 5 are evenly distributed in the part where the back cover 2 forms the rear sound cavity, This part is also the part surrounded by the protrusion 6, and the number of the moving coil sound unit 4 is at least one, preferably one.

Figure 6 shows five situations in which the moving iron sounding unit and the moving coil sounding unit are combined according to the embodiment of the present utility model. 3 and the moving coil sound unit 4 are simplified structures, and the specific structures will be described below. As shown in Figure 6, in the five situations in which the moving iron sounding unit and the moving coil sounding unit are combined in this embodiment, one moving coil sounding unit is combined with 1-5 moving iron sounding units respectively, and the moving iron sounding unit 3 The position of is not limited to the position in Figure 6.

The above content has explained the overall structure of the multi-sounding unit earphone provided by the utility model. The most important part in the headset is the sounding unit for sounding. The moving coil sounding unit 44 and the moving iron sounding unit involved in the utility model will be described below. 3 to explain in detail.

1. Dynamic sound unit

Fig. 4 shows the structure of a moving coil sound generating unit according to an embodiment of the present invention. As shown in Figure 4, the moving coil sound unit 4 includes a vibration system and a magnetic circuit system; wherein the vibration system includes a diaphragm 12 and a voice coil 11 combined on one side of the diaphragm; the magnetic circuit system includes a washer 13 combined in sequence, The magnet 14 and the frame 7, the space between the side wall of the frame 7 and the washer 13 and the magnet 14 form a magnetic gap, and the voice coil 11 is arranged in the magnetic gap. The basin frame 7 is a structure with an opening at one end, and the opening end is fixedly combined with the edge part of the diaphragm 12 to realize accommodating and fixing the vibration system. After the voice coil 11 is connected to the electric signal, it vibrates in the magnetic gap formed by the magnetic circuit system, which further drives the diaphragm 11 to vibrate, and the diaphragm drives the air to produce sound.

The basin frame 7 is also provided with a damping hole 8 connecting the front acoustic cavity and the rear acoustic cavity to balance the sound pressure and heat dissipation. On the basin frame 7 where the damping hole 8 is not opened, a pad 9 and a voice coil 11 are provided. The lead wire of the wire is welded to the pad 9 to realize the electrical connection between the voice coil 11 and the pad 9 .

2. Moving iron sound unit

Fig. 5 shows the structure of the moving iron sound unit according to the embodiment of the present invention. As shown in FIG. 5 , the moving iron sounding unit 3 includes a casing, a sounding tube 17 , a connecting wire 23 , a vibration system, a magnetic circuit system and a fixing piece 16 . Wherein, the shell includes an upper shell 15a and a lower shell 15b, the vibration system and the magnetic circuit system are arranged in the cavity surrounded by the upper shell 15a and the lower shell 15b, and are fixed by the fixing member 16, and the sounding tube 17 and the connecting wire 23 are respectively arranged on The two sides of the shell; the vibration system includes the sound film 18 and the wire 22; the magnetic circuit system includes the coil 19, the loop magnetic circuit 20 and the reed 21.

The circular magnetic circuit 20 comprises two magnets arranged up and down, a magnetic gap is formed between the two magnets, the coil 19 is wound on one end of the two magnets, the other end of the two magnets is fixed with the fixture 16, the connecting wire 23 and the coil 19 Electric connection, the external electrical signal is transmitted to the coil 19, the reed 21 is a U-shaped arm structure, one of the arms is inserted into the magnetic gap, the other arm is fixed with the fixing part 16, and the two ends of the metal wire 22 are respectively connected to the sound film 18 And the reed 21, after the coil 19 is connected to the electric signal, the reed 21 vibrates in the magnetic gap, thereby driving the sound membrane 18 to vibrate through the metal wire 22 connected to it, and the sound membrane 18 drives the air to make a sound.

The moving coil and the moving iron sounding unit in the utility model are not limited to the structures in the embodiments, and may also be moving coils and moving iron sounding units of other structures.

In order to ensure that the moving iron sounding unit 3 and the moving coil sounding unit 4 do not touch each other during the vibration process, the distance between the upper cover 28 of the moving iron sounding unit 3 and the diaphragm 14 of the moving coil sounding unit 4 is at least 1 mm, 1 mm is the safe distance between the iron sound unit 3 and the moving coil sound unit 4.

In addition, when installing the moving iron sounding unit 3 , one end of the sounding tube 17 is directed toward the sounding hole 10 , which is beneficial for human ears to receive sound.

The above content has described in detail the structure of the multi-sounding unit earphone provided by the utility model. By arranging the moving iron sounding unit and the moving coil sounding unit on different horizontal planes, a three-dimensional placement space is formed inside the earphone, and two different sounding units are realized. Complementary audio, so as to improve the sound quality of the earphones, extend the high-frequency characteristics of the sound quality, and reduce the sound quality distortion. The multi-sound unit earphone includes in-ear earphones, ear canal earphones, neck-back earphones, headsets and the like.

In order to more intuitively illustrate the effect brought by the multi-sound unit earphone provided by the utility model, the sound sensitivity of the traditional earphone and the sound sensitivity of the multi-sound unit earphone passed by the utility model are tested, and Fig. 7 and Fig. 8 show respectively The frequency response curve of the traditional earphone and the frequency response curve of the multi-sound unit earphone of the embodiment of the present invention are shown; the abscissa in Fig. 7 and Fig. 8 represents the frequency, and the ordinate represents the sound sensitivity; as shown in Fig. 7, the traditional There are two types of earphones, one is the dynamic earphone, including the dynamic sound unit, and its sound sensitivity curve is the first curve in Figure 7 (from left to right), and the other is the moving iron earphone, including the dynamic The iron sound unit uses two moving iron earphones to test different frequency bands. The sound sensitivity curves of the first moving iron earphone and the second moving iron earphone are the second curve (from left to right) and the second curve in Figure 7 respectively. Three curves (from left to right); as shown in Figure 8, the multi-sounding unit earphone provided by the utility model is an earphone assembled together by a moving coil sounding unit and a moving iron sounding unit.

See Figure 7. When the frequency of traditional dynamic earphones is around 4000HZ, the sound sensitivity reaches its peak and begins to decline. When the frequency reaches 11000HZ, the sound sensitivity drops sharply, indicating that dynamic earphones can well control the sound quality in the low frequency range. However, the sound quality of the high-frequency band cannot be controlled, and the higher the frequency, the more obvious the sound distortion is; for the traditional moving-iron earphones, when the frequency of the first moving-iron earphones is 4000HZ-5000HZ, the sound sensitivity reaches its peak and begins to decline. When the frequency of the second moving iron earphone is rising, when the frequency of the first moving iron earphone reaches about 11400HZ, the sound sensitivity drops sharply. When the frequency of the second moving iron earphone is around 11400HZ, the peak value of the sound sensitivity It is slightly lower than the peak value, indicating that the moving iron earphone can control the sound quality of the high frequency band very well, but cannot control the sound quality of the low frequency band.

Referring to Figure 8, the moving coil sounding unit and the moving iron sounding unit are combined to form the multi-sounding unit earphone of the present invention. The moving coil sounding unit can well control the sound quality of the low frequency band, and the moving iron sounding unit can well control the high frequency band Sound quality, the combination of the two, when the frequency reaches about 4000HZ, the sensitivity will not drop significantly, and it will remain until the high frequency band. Therefore, the combination of the moving coil sound unit and the moving iron sound unit can reduce the distortion of the sound quality of the earphone and extend the high frequency characteristics of the sound quality.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. A multi-sound-generating-unit earphone is characterized by comprising a front shell and a rear cover which are combined together, wherein at least three moving iron sound generating units and at least one moving coil sound generating unit are accommodated in a cavity defined by the front shell and the rear cover; wherein,

a fixed groove for accommodating and fixing the moving iron sounding unit and a bulge surrounding the fixed groove are arranged on the rear cover; wherein the protrusion, the fixing groove and the rear cover are of an integrated structure;

the movable coil sounding unit is buckled on the bulge, a front sound cavity is formed by a space formed by the movable coil sounding unit and the bulge, the fixed grooves are uniformly distributed in the front sound cavity, and the movable coil sounding unit is vertically separated from the movable iron sounding unit in the front sound cavity by a certain distance;

in the cavity of the front shell and the rear cover, the space occupied by the front sound cavity is removed, and the other spaces form a rear sound cavity.

2. The multi-sound unit earphone of claim 1,

and the movable coil sounding unit is provided with a damping hole for communicating the front sound cavity with the rear sound cavity.

3. The multi sound unit earphone of claim 2,

and a bonding pad is arranged at the position on the movable coil sounding unit, which is not provided with the damping hole.

4. The multi-sound unit earphone of claim 1,

the cross section of the moving coil sounding unit is circular and is buckled on the bulge of the rear cover in a bonding mode.

5. The multi-sound unit earphone of claim 1,

and a sound outlet is arranged at the part of the rear cover, which forms the front sound cavity.

6. The multi-sound unit earphone of claim 1,

the movable iron sounding unit and the fixed groove are both square bodies, and the movable iron sounding unit is fixed in the fixed groove in a bonding mode.

7. The multi-sound unit earphone of claim 1,

the moving coil sounding unit comprises a vibration system and a magnetic circuit system; wherein,

the vibration system comprises a vibrating diaphragm and a voice coil combined on one side of the vibrating diaphragm;

the magnetic circuit system comprises a washer, a magnet and a basin frame which are combined in sequence, a magnetic gap is formed between the side wall of the basin frame and the space between the washer and the magnet, and the voice coil is arranged in the magnetic gap.

8. The multi-sound unit earphone of claim 1,

the number of the moving iron sounding units is 3 or 5.

9. The multi-sound unit earphone of claim 7,

the distance between the movable coil sounding unit and the movable iron sounding unit in the front sound cavity is at least 1 mm in the vertical direction.

10. The multi-sound unit earphone of claim 1,

the moving-iron sounding unit comprises a shell, a vibration system and a magnetic circuit system assembled in the shell, a fixing piece and a sounding cylinder arranged on one side of the shell, wherein the vibration system comprises a sound film arranged above the magnetic circuit system, the magnetic circuit system comprises a coil fixed on the fixing piece, a clip-shaped magnetic circuit fixed on the fixing piece and a tongue, the tongue penetrates through the center of the coil and enters the clip-shaped magnetic circuit, and the magnetic circuit system is connected with the vibration system through a metal wire.