TW201431385A - Earphone - Google Patents

Abstract

An earphone includes a shell and a speaker received in the shell. The shell includes a back cover and a front cover fixed to the back cover. The front cover and the back cover integrally form a voice chamber. The speaker divides the voice chamber into a front chamber and a back chamber. The front cover defines a sound output hole to communicate the front chamber with outer environment. The earphone further includes a spacing plate. The spacing plate is formed between the speaker and the front cover and divides the front chamber into a first chamber and a second chamber. The first chamber is adjacent to the speaker and the second chamber is adjacent to the front cover. The spacing plate defines a through hole to communicate the first chamber with the second chamber.

Description

headset

The invention relates to an earphone, in particular to an earphone.

Existing earbud headphones typically include a housing and a horn disposed within the housing. The horn separates the space within the housing into a front chamber and a rear chamber. The housing has a front cover on the front side of the horn and a rear cover on the rear side of the horn. The front cover is provided with a sound hole for connecting the front cavity to the external environment. When the horn is working, the sound film disposed on the horn pushes the air in the front cavity to vibrate to make a sound. However, due to the irregularity of the shape of the front cover, the vibration of the air in the front cavity is prone to noise, which affects the quality of the sound output from the earphone.

In view of this, it is necessary to provide a headphone that can improve the sound output of the headphone.

An earphone includes a housing and a speaker disposed in the housing. The housing includes a back cover and a front cover that is disposed on the back cover. The front cover and the rear cover are enclosed to form a sound chamber. The horn partitions the sound chamber into a front cavity on the front side of the horn and a rear cavity on the rear side of the horn. The front cover is provided with a sound hole for connecting the front cavity to the external environment. The earphone further includes a partition disposed between the horn and the front cover to divide the front cavity into a first cavity adjacent the horn and a second cavity adjacent the front cover. The partition is provided with a through hole to communicate the first cavity and the second cavity.

In the above earphone, by providing a partition between the horn and the front cover, and providing a through hole at a central position of the partition, the partition causes the horn to push the air in the first cavity to vibrate and emit a sound, and then the sound passes through the partition The central through hole propagates into the second cavity and is transmitted from the sound hole to the external environment. The shape of the spacer can be arbitrarily set without being affected by the shape of the earphone, so that the shape of the sound chamber can be restricted, thereby preventing the irregularity of the shape of the front cover of the earphone from affecting the quality of the output sound of the earphone.

The earphone of the present invention will be further described below with reference to the drawings.

1 and 2 illustrate an earphone 100 according to an embodiment of the present invention. The earphone 100 includes a housing 10 and a horn 20 disposed within the housing 10. In this embodiment, the earphone 100 is a right ear earphone that can be placed in the right ear of the human ear.

Referring to FIG. 3 together, the housing 10 includes a rear cover 11 and a front cover 12 disposed on the front side of the rear cover 11 and covering the rear cover 11. The rear cover 11 and the front cover 12 are enclosed to form a sound chamber. The horn 20 is disposed in the sound chamber, and divides the sound chamber into a front cavity 131 on the front side of the horn 20 and a rear cavity 132 on the rear side of the horn 20.

The rear cover 11 includes a cavity portion 111 coupled to the front cover 12 and a grip portion 112 extending outward from an outer side of the cavity portion 111. The cavity portion 111 is substantially conical, and a plurality of air holes 113 are formed in the cavity portion 111 to connect the rear cavity 132 of the housing 10 with the external environment. The grip portion 112 has an elongated rod shape and is formed to extend from the outer side of the cavity portion 111 in a direction opposite to the air guide hole 113. A wire tube 114 is disposed on the grip portion 112. The conduit 114 is provided with a wire therethrough to electrically connect the horn 20 to an external earphone plug.

A ring wall 115 is protruded from a cavity portion 111 of the rear cover 11 toward a side of the front cover 12. The inner edge of the ring wall 115 is circular, and the outer edge of the ring wall 115 is substantially elliptical. The ring wall 115 is formed with a first wall portion 116 and a second wall portion 117 which are spaced apart on one side. The first wall portion 116 is located inside the second wall portion 117 for receiving the horn 20. The second wall portion 117 is located outside the first wall portion 116 for coupling with the front cover 12.

The horn 20 has a circular shape as a whole, and is disposed on the ring wall 115 of the cavity portion 111 of the rear cover 11 with the front surface of the horn 20 facing the front cover 12. In this embodiment, the horn 20 is a moving coil type horn. The horn 20 includes a magnetic frame 21, a magnet 22 disposed in the magnetic frame 21, a washer 23 disposed on the magnet 22, a voice coil 24 disposed around the magnet 22, and a fixing ring disposed at an outer edge of the magnetic frame 21. 25 and a sound film 26 fixedly connected to the voice coil 24 and the fixing ring 25. A circuit board is fixed to a side of the magnetic frame 21 opposite to the magnet 22. The magnetic frame 21 is substantially bowl-shaped and includes a substrate 211 and a side plate 212 extending upward from a periphery of the substrate 211. The substrate 211 and the side plate 212 are enclosed to form a receiving cavity 213. The magnet 22 and the washer 23 are housed in the receiving cavity 213. The magnet 22 has a substantially cylindrical shape and is attached to the upper surface of the substrate 211. The washer 23 has a circular flaky shape and is attached to the upper surface of the magnet 22. The magnetic frame 21 and the magnet 22 are concentrically arranged with the washer 23, and the outer diameter of the magnet 22 and the washer 23 is smaller than the diameter of the receiving cavity 213 in the magnetic frame 21, so that the magnet 22, the washer 23 and the side plate of the magnetic frame 21 are provided. An annular gap is formed between 212. The voice coil 24 has a cylindrical shape, and its upper end is bonded to the lower surface of the sound film 26, and its lower end is disposed in the annular gap.

The front cover 12 has a front wall 121 opposite to the horn 20 and a side wall 122 extending from the periphery of the front wall 121 toward the rear cover 11. The front wall 121 is generally circular and has a central portion that projects slightly outward. A sound hole 123 is disposed on the front wall 121 to connect the front cavity 131 with the external environment. In this embodiment, the front cover 12 has a tapered end, and the sound hole 123 is disposed at the end position of the front cover 12 when the earphone is placed in the outer ear of a human ear. The sound hole is described as being opposite to the entrance of the external auditory canal in the outer ear. In this embodiment, the sound hole 123 is in the shape of an elliptical racetrack. A mesh cover may be disposed on the sound hole 123 as needed to prevent foreign matter from entering the front cavity 131 of the casing 10 from the sound hole 123. The mesh cover may be made of a nylon mesh or a non-woven fabric. A partition 124 is disposed between the front cover 12 and the horn 20, and the partition 124 divides the front cavity 131 into a first cavity 1311 adjacent to the horn 20 and a second cavity 1312 adjacent to the front cover 12. A through hole 1241 is disposed at a center of the partition 124 to communicate the first cavity 1311 and the second cavity 1312. In the present embodiment, the partition plate 124 is convex toward the front cover 12. A bead 1242 extends outwardly from the edge of the partition 124, and the bead 1242 is disposed on the surface of the horn 20. The spacer 124 may be made of a metal material as needed. The size of the aperture of the through hole 1241 in the center of the partition 124 is between 1.5 mm and 2.5 mm. In the present embodiment, the partition plate 124 is made of stainless steel, and the through hole 1241 at the center of the partition plate 124 has a hole diameter of 1.8 mm.

When the earphone 100 is assembled, the horn 20 is disposed on the ring wall 115 of the cavity portion 111 of the rear cover 11, and the rear end of the side wall 122 of the front cover 12 is sleeved around the ring wall 115 of the cavity portion 111 and the cavity. The body 111 is combined. The front wall 121 of the front cover 12 is opposite to the front surface of the horn 20. The sound hole 123 is disposed at an edge position of the front wall 121 and is disposed obliquely with respect to the horn 20. That is, the central axis X of the horn 20 is inclined with respect to the central axis Y of the sound hole 123. The angle between the central axis X of the horn 20 and the central axis Y of the sound hole 123 is an acute angle as needed. Preferably, the angle between the central axis X of the horn 20 and the central axis Y of the sound hole 123 is between 15 and 75 degrees.

When the horn 20 of the earphone 100 is in operation, the horn 20 pushes the air in the first cavity 1311 of the front cavity 131 to vibrate to generate sound. The sound is transmitted to the second cavity 1312 through the through hole 1241 at the center of the partition 124, and then propagates to the external environment through the sound hole 123 of the front cover 12. Due to the presence of the partition 124, the horn 20 primarily pushes air to vibrate within the first cavity 1311. Therefore, the irregularity of the shape of the front cover 12 does not easily affect the vibration of the air, thereby improving the quality of the sound output from the earphone 100. Further, when the angle between the central axis Y of the sound hole 123 and the central axis X of the horn 20 is between 15 degrees and 75 degrees, the shape of the front cover 12 of the earphone 100 can be better with the outer ear of the human body. The structure cooperates to make the sound hole 123 on the front cover 12 more suitable for the entrance of the external auditory canal of the external ear, which is better for the sound to enter the external auditory canal from the sound hole 123, thereby improving the quality of the sound heard by the user. . Since the earphone 100 of the present invention can obtain better frequency characteristics, it can provide a more natural sound experience.

In addition, those skilled in the art can make other changes in the spirit of the present invention. Of course, the changes made in accordance with the spirit of the present invention should be included in the scope of the present invention.

100. . . headset

10. . . case

11. . . Back cover

111. . . Cavity

112. . . Grip

113. . . Stomata

114. . . Conduit

115. . . Ring wall

116. . . First wall

117. . . Second wall

12. . . The front cover

121. . . Front wall

122. . . Side wall

123. . . Sound hole

124. . . Partition

1241. . . Through hole

1242. . . Blanking

131. . . Front cavity

1311. . . First cavity

1312. . . Second cavity

132. . . Posterior cavity

20. . . horn

twenty one. . . Magnetic frame

twenty two. . . magnet

twenty three. . . Huasi

twenty four. . . Voice coil

25. . . M

26. . . Sound film

FIG. 1 is an assembled, isometric view of an earphone according to an embodiment of the present invention.

Figure 2 is an exploded view of the earphone shown in Figure 1.

Figure 3 is a cross-sectional view of the earphone of Figure 1 taken along line III-III.

111. . . Cavity

112. . . Grip

113. . . Stomata

115. . . Ring wall

116. . . First wall

117. . . Second wall

12. . . The front cover

121. . . Front wall

122. . . Side wall

123. . . Sound hole

124. . . Partition

1241. . . Through hole

1242. . . Blanking

132. . . Posterior cavity

20. . . horn

Claims (10)

An earphone includes a housing and a speaker disposed in the housing, the housing includes a back cover and a front cover disposed on the back cover, the front cover and the back cover are enclosed to form a sound cavity, and the speaker separates the sound cavity into a front cavity on the front side of the horn and a rear cavity on the rear side of the horn, the front cover is provided with a sound hole for connecting the front cavity to the external environment, wherein the earphone further comprises a partition, the partition is arranged Between the horn and the front cover to divide the front cavity into a first cavity adjacent to the horn and a second cavity adjacent to the front cover, the partition is provided with a through hole to communicate the first cavity and the second cavity. The earphone of claim 1, wherein the front cover has a tapered end, and the sound hole is disposed at the end position of the front cover, when the earphone is placed on the outer ear of a human ear When used, the sound hole is opposite to the entrance of the external auditory canal in the outer ear. The earphone of claim 2, wherein the sound hole has an elliptical racetrack shape. The earphone of claim 1, wherein the spacer is made of a metal material. The earphone of claim 4, wherein the spacer is made of a stainless steel material. The earphone of claim 1, wherein the aperture of the central hole of the spacer is between 1.5 mm and 2.5 mm. The earphone of claim 1, wherein the diaphragm has a hole diameter of 1.8 mm. The earphone of claim 1, wherein the spacer protrudes in a direction of the front cover. The earphone of claim 1, wherein the edge of the partition extends outwardly with a crimping edge, and the crimping cover is disposed on a surface of the horn. The earphone of claim 1, wherein the back cover comprises a cavity portion combined with the front cover and a grip portion extending outward from an outer side of the cavity portion, the cavity A vent is provided in the portion to connect the rear chamber to the external environment.