TW202008798A - Loudspeaker in earphone - Google Patents

Abstract

A loudspeaker in an earphone includes a casing having a chamber, a through hole penetrating through the chamber along an axis, and a fixing part disposed on the outside of the chamber; a magnet unit having a second through hole and a groove formed on the circumference of the second through hole; a vibration membrane having a third through hole and a flange part disposed on the circumference of the third through hole and within the groove; and a coil attaching to the circumference of the flange part and positioned at a distance from the magnet unit. Because the first through hole, the second through hole and the third through hole are coaxial and aligned, the loudspeaker can rapidly relieve the air pressure and has sufficient structural strength.

Description

Headphone speaker structure

The invention relates to a loudspeaker for a headphone with a central straight-through structure that can quickly release pressure and has sufficient strength.

At present, the common speaker structure of earphones, such as the patent case of the new type M548940 "Speaker Sounding Mechanism" announced on September 11, 106 in the Republic of China, is disclosed: it contains a circular thin-shaped diaphragm, It includes a sound membrane located in the center, a ring-shaped overhang located outside the sound membrane, and a ring-shaped support piece located outside the ring-shaped overhang; a voice coil is located below the diaphragm and includes a sound tube and a A coil wound on the sound tube; the upper end of the sound tube is connected to the junction of the ring-shaped overhang and the sound film; a magnetic moving element, the upper end of which is deep into the voice coil, and the lower end extends outward and then bends upward; wherein The sound signal conducts the coil in the form of a fluctuating current, and the magnetic field is induced through the coil to cause the voice coil to interact with the magnetic moving element, causing the vibrating membrane to rapidly change to produce sound; wherein the vibrating membrane, the voice coil, and the magnetic moving element It is a coaxial line structure, and with respect to the coaxial line of the diaphragm, the voice coil, and the magneto-active element, the outermost radius of the magneto-active element is larger than the ring-shaped overhang of the diaphragm and the ring-shaped support piece The radius of the edge of the junction.

However, the speaker of the earphone of the previous patent has the following defects in use:

1. When the earphone is worn on the ear, the earphone will make the ear canal form a closed state, so the sound wave generated by the vibrating membrane of the speaker will be transmitted back and forth between the ear canal and the ear canal, causing the sound wave to generate abnormal pressure on the ear canal, resulting in User discomfort.

2. The sound waves transmitted back and forth in the ear canal will exert a reverse depressive force on the vibrating membrane, so that the subsequent sound waves emitted by the vibrating membrane will be affected, thus causing distortion of the sound quality, especially the impact on the middle and high frequencies.

Therefore, there is the patent case of invention No. I628961 "Headphones providing ear canal decompression and improving natural sound quality and its manufacturing method" announced on July 1, 107, which discloses that the earphones include: a headphone body, set An air flow channel penetrates the earphone body, and the earphone body has an accommodating space, and a vibrating membrane is arranged in the accommodating space; a speaker is arranged in the accommodating space and corresponds to the vibrating membrane. When the user wears the earphone body to the ear, the ear canal is connected to the outside through the air flow channel. When the sound wave generated by the vibrating membrane is reflected from the eardrum, it will not be transmitted back and forth in the ear canal, but will The air flow channel is transmitted to the outside, which can reduce the abnormal pressure caused by the sound wave on the eardrum, and can also prevent the sound wave from exerting a repressive force on the vibrating membrane due to reflection, which can distort the sound quality.

The previous case of this patent is mainly that the speaker is provided with a through air flow channel, which can directly and unimpededly penetrate the front end, central position and rear end of the earphone body, so that after the sound wave generated by the vibrating membrane is output, it will not be in the ear after reflection from the ear membrane The channel is transmitted back and forth, and it is directly transmitted from the air flow channel to the outside, so as to reduce the abnormal pressure caused by the sound wave to the eardrum due to the back and forth transmission. However, because of this structure, the structure of the speaker is relatively weak, and it is easily damaged by external vibration, so that the sound quality deteriorates.

This is because the current headphone speaker structure has the above phenomenon.

The invention provides a headphone speaker structure, which is provided with a housing and a containing chamber, the housing is provided with a first through hole in an axial direction, the first through hole penetrates through the containing chamber, and the housing is provided in the A fixing part is extended on the periphery of the chamber; a magnet unit is fixed in the chamber, and the magnet unit is provided with a second through hole penetrating in the axis direction, the second through hole is connected with the first through hole Correspondingly, the magnet unit is provided with an accommodating groove in the peripheral ring of the second through hole; a vibrating membrane is fixed in the fixing part, and the vibrating membrane is provided with a third through hole penetrating in the axial direction, The third through hole corresponds to the second through hole, and the vibrating membrane is provided with a flange portion at the periphery of the third through hole, and the flange portion is provided in the accommodating groove; a coil, It is fixed to the periphery of the flange, and the coil is kept at a distance from the magnet unit.

A protective net is further provided, and the protective net is fixed on the fixing part by a fixing ring.

The protective net is provided with a fourth through hole penetrating in the axial direction. The fourth through hole corresponds to the third through hole.

The cross-sectional shape of the accommodating groove is bowl-shaped.

The above-mentioned diaphragm is clamped and fixed in the fixing part by a gasket and a pressing ring before and after.

The above-mentioned gasket and the pressure ring are respectively clamped on the periphery of the diaphragm.

The above-mentioned axis direction is set perpendicular to the casing.

The above technical features have the following advantages:

1. The speaker is provided with a central through-through structure formed by the corresponding first through hole, second through hole, third through hole and fourth through hole, so that the sound wave can be quickly discharged to balance the Pressure, and relieve pressure in the ear canal, thereby reducing the abnormal pressure caused by the sound wave on the eardrum.

2. By the coil is set in the accommodating slot, it can be protected by the magnet unit, which is not easy to be damaged, and through the protective effect of the protective net, it can protect the diaphragm from being damaged, so as to strengthen the overall strength, and has Ruggedness, so that when transmitting sound waves, it can improve the sound quality and ensure the perfect sound quality.

Please refer to the first, second and third figures, the embodiment of the present invention is a loudspeaker, which includes: a housing (1), a magnet unit (2), a diaphragm (3), a coil (4 ) And net protection (5), including:

The casing (1) is provided with a chamber (11) inside, and the casing (1) is provided with a first through hole (12) penetrating the chamber (11) in an axis direction (A). A) is perpendicular to the casing (1). Furthermore, the casing (1) is provided with a fixing portion (13) extending outward from the periphery of the chamber (11).

The magnet unit (2) is fixed in the chamber (11) of the casing (1). The magnet unit (2) is provided with a second through hole (21) penetrating in the axial direction (A). The second through hole (21) corresponds to the first through hole (12). Furthermore, the magnet unit (2) is provided with an accommodating groove (22) with a bowl-shaped cross section on the peripheral ring of the second through hole (21).

The diaphragm (3) is fixed to the casing (1). The periphery of the diaphragm (3) is clamped and fixed in the fixing portion (13) by a gasket (31) and a pressing ring (32) in front and back. The diaphragm (3) is provided with a third through hole (33) penetrating in the axial direction (A), the third through hole (33) is connected with the second through hole (21) and the first through hole (12) Correspondence. Furthermore, the vibrating membrane (3) is provided with a flange portion (34) on the peripheral ring of the third through hole (33), and the flange portion (34) is provided in the accommodating groove of the magnet unit (2) (22).

The coil (4) is fixed on the periphery of the flange portion (34) of the diaphragm (3), so that the coil (4) is received by the magnet unit (2) in the accommodating groove (22) Protect and maintain a distance from the magnet unit (2). In addition, the coil (4) is provided with an input terminal (not shown in the figure), through which a current is introduced to make the coil (4) and the magnet unit (2) relatively vibrate.

The protective net (5) is fixed on the fixing part (13) of the casing (1) by a fixing ring (51), and the periphery of the protective net (5) is fixed on the pressing ring (32) ). Therefore, the protective net (5) can protect the diaphragm (3) from being damaged. The protective net (5) is provided with a fourth through hole (52) penetrating in the axial direction (A), the fourth through hole (52) is connected with the third through hole (33) and the second through hole (21) corresponds to the first through hole (12).

In use, as shown in the third and fourth figures, the speaker of the embodiment of the present invention is fixed in an earphone (B). The earphone (B) is provided with a front end (B1), a rear end (B2) and an air flow channel (B3), the air flow channel (B3) penetrates the front end (B1) and the rear end (B2). The air flow channel (B3) communicates with the first through hole (12) of the housing (1), the second through hole (21) of the magnet unit (2), and the vibrating membrane (3). The third through hole (33) and the fourth through hole (52) of the protective net (5). When playing audio, the front end (B1) of the earphone (B) should be worn in an ear (C) [as shown in the fifth figure]. After the current is introduced through the input terminal (not shown) of the coil (4), the coil (4) can vibrate relatively to the magnet unit (2), because the coil (4) is fixed to the The flange portion (34) of the diaphragm (3), so the coil (4) can drive the diaphragm (3) to vibrate synchronously, when the diaphragm (3) vibrates, it can emit a sound wave, the sound wave system It can enter the ear canal (C1) of the ear (C) through the air flow channel (B3), and the sound wave is reflected from an eardrum (C2) in the ear (C) and returns to the earphone (B) ) In the air flow channel (B3), and then the sound wave passes through the air flow channel (B3), and then is transmitted to the outside through the rear end (B2) of the earphone (B), thereby eliminating the pressure. Therefore, the speaker is provided with corresponding first through holes (12), second through holes (21), third through holes (33) and fourth through holes (52), so that the sound wave can be quickly Exhaust, and the sound wave will not be transmitted back and forth in the ear canal (C1), in addition to balancing the pressure in the ear canal (C1), and for pressure relief in the ear canal (C1), thereby reducing the sound wave The eardrum (C2) causes abnormal pressure.

Moreover, the coil (4) of the embodiment of the present invention is arranged in the accommodating groove (22), so it can be protected by the magnet unit (2), which is not easily damaged, and protected by the protective net (5) It can protect the vibrating membrane (3) from being damaged, so that its overall strength is sufficient and it has firmness. When transmitting sound waves, the sound quality can be improved to ensure that the sound quality of the speaker is perfect.

Therefore, the speaker of the present invention mainly uses the corresponding first through holes (12), the second through holes (21), the third through holes (33) and the fourth through holes (52) to form a The central straight-through structure, so regardless of whether the earphones are earmuff earphones or earphones, or any other type of earphones, such as ear canal, earhook, neck-hanging, Bluetooth wireless, full-cover head-mounted , Anti-noise type, half-hood head-mounted type, rear open type or rear closed type, etc., as long as the corresponding first through hole (12), the second through hole (21), the third through hole ( 33) and the central through-type structure of the fourth through hole (52) are within the scope of protection of the present invention.

Based on the description of the above embodiments, the operation, use and effects of the present invention can be fully understood. However, the above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the implementation of the present invention. The scope, that is, simple equivalent changes and modifications made in accordance with the scope of the present invention's patent application and the description of the invention, is within the scope of the present invention.

(1) ‧‧‧ housing (11) ‧‧‧ chamber (12) ‧‧‧ first through hole (13) ‧‧‧ fixed part (2) ‧‧‧ magnet unit (21) ‧‧‧ second Through hole (22) ‧‧‧accommodation groove (3) ‧‧‧ diaphragm (31) ‧‧‧ gasket (32) ‧‧‧ pressure ring (33) ‧‧‧ third through hole (34) ‧‧ ‧Flange part (4) ‧‧‧ Coil (5) ‧‧‧ Netting (51) ‧‧‧ Fixing ring (52) ‧‧‧ Fourth through hole (A) ‧‧‧Axis direction (B) ‧‧ ‧Headphone (B1) ‧‧‧ Front end (B2) ‧‧‧ Rear end (B3) ‧‧‧ Air flow channel (C) ‧‧‧ Ear (C1) ‧‧‧ Ear canal (C2) ‧‧‧

[The first figure] is an exploded perspective view of an embodiment of the present invention.

[Second figure] is a three-dimensional assembly diagram of an embodiment of the present invention.

[Third figure] is a combined sectional view of an embodiment of the present invention.

[Fourth figure] is a schematic diagram of an embodiment of the present invention installed in a headset.

[Fifth figure] is a schematic view of the use of the embodiment of the present invention on the ear.

(1)‧‧‧case

(11)‧‧‧Room

(12)‧‧‧First through hole

(13)‧‧‧Fixed Department

(2)‧‧‧Magnet unit

(21)‧‧‧Second through hole

(22)‧‧‧accommodation slot

(3) ‧‧‧ Vibration membrane

(31)‧‧‧Shim

(32)‧‧‧Press ring

(33)‧‧‧th through hole

(34)‧‧‧Flange

(4)‧‧‧coil

(5)‧‧‧Net

(51)‧‧‧Retaining ring

(52)‧‧‧The fourth through hole

(A) ‧‧‧ axis direction

Claims (7)

A headphone speaker structure includes: a casing provided with a containing chamber, the casing is provided with a first through hole in an axial direction, the first through hole penetrates the containing chamber, and the casing is provided in the containing chamber A fixing portion is extended on the periphery of the magnet; a magnet unit is fixed in the chamber, and the magnet unit is provided with a second through hole penetrating in the axis direction, the second through hole corresponds to the first through hole , And the magnet unit is provided with an accommodating groove in the peripheral ring of the second through hole; a vibrating membrane is fixed in the fixing part, and the vibrating membrane is provided with a third through hole penetrating in the axial direction, the first The three through-holes correspond to the second through-holes, and the vibrating membrane is provided with a flange portion at the periphery of the third through-hole, the flange portion is provided in the accommodating groove; a coil is fixed At the periphery of the flange portion, the coil is kept at a distance from the magnet unit. According to the structure of the earphone speaker described in item 1 of the patent application scope, a protective net is further provided, and the protective net is fixed on the fixing part by a fixing ring. As described in Item 2 of the patent application scope, the headphone speaker structure, wherein the protective net is provided with a fourth through hole penetrating in the axial direction, and the fourth through hole corresponds to the third through hole. The earphone speaker structure as described in item 1 of the patent application scope, wherein the cross-sectional shape of the accommodating groove is bowl-shaped. The structure of the earphone speaker as described in item 1 of the patent application scope, wherein the diaphragm is clamped and fixed in the fixing part by a gasket and a pressing ring before and after clamping. As described in claim 5 of the scope of the patent application, the earphone speaker structure, wherein the gasket and the pressure ring are respectively clamped on the periphery of the diaphragm. The earphone speaker structure as described in item 1 of the patent application scope, wherein the axis direction is set perpendicular to the housing.

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