CN115550783A

CN115550783A - Open earphone

Info

Publication number: CN115550783A
Application number: CN202211212241.3A
Authority: CN
Inventors: 焦博康; 曾鸿; 黄代杨
Original assignee: Dongguan Liesheng Electronic Co Ltd
Current assignee: Dongguan Liesheng Electronic Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-12-30
Anticipated expiration: 2042-09-30
Also published as: WO2024066557A1; CN115550783B

Abstract

The invention discloses an open type earphone, comprising: ear-hang portion and core portion, ear-hang portion includes: the shape of the ear-hanging part corresponds to the shape from the crus of the helix to the tail of the helix in the auricle of the human body; the ear-hanging part is bent backwards from the connecting end of the ear-hanging part connected with the machine core part to form a bent part corresponding to the groove shape on the back of the helix in the auricle of the human body, and a gap for clamping the upper part of the helix in the auricle of the human body is formed between the bent part and the machine core part; the earphone core part is also provided with a rear sound hole, the sound hole and the rear sound hole are respectively positioned at the front side and the rear side of the sound generating unit in the earphone core part, and the connecting line of at least one group of corresponding sound generating hole and rear sound hole points to the auditory meatus. Aiming at the open type earphone adopting the ear-hang structure, the invention enables the shape of the ear-hang part to correspond to the shape from the crus of the auricle to the tail of the auricle of the human body, so that the wearing is more stable and comfortable for a user.

Description

Open earphone

The technical field is as follows:

the invention relates to the technical field of earphone products, in particular to an open type earphone adopting an ear-hang structure.

Background art:

the open earphone is different from the in-ear earphone, the sounding hole of the open earphone is not like the earplug earphone and needs to be plugged into the auditory canal but is positioned outside the auditory canal, and the sounding hole points to the auditory canal. When the open type earphone is used, not only can the sound of the earphone be heard, but also the sound of the external environment can be heard. The open type earphone is particularly suitable for users to use outdoors because the open type earphone can hear external environment sound when in use.

To facilitate wearing, open-type earphones typically employ an earhook structure, which typically includes: the earphone is hung on the ear of a human body through the ear hanging part, and the machine core part is attached to the surface of the ear of the human body. The human ear comprises three parts of an external ear, a middle ear and an inner ear, auditory receptors and sense receptors are positioned in the inner ear, and the external ear comprises two parts of an auricle and an external auditory canal. Referring to fig. 1 and 2, which are schematic views of the pinna of the human body, pinna 3 extends generally obliquely outwardly from the lateral side of the head and forms an angle, wherein the angle is approximately 25-35 °. The outermost side of auricle 3 is auricle 31, and auricle 31 is distributed along the periphery of ear canal 32, curving from auricle foot 311 to auricle tail 312. A groove 33 is formed in the back surface of the auricle 3.

The ear-hang earphone is mainly hung on the auricle by the ear-hang part, and in order to adapt to the shape of the auricle of a human body, the ear-hang part is usually designed in the shape of an helix and is in a curve shape. When the ear-hook part is hung on the auricle 3, the inner side surface of the movement part is attached to the outer surface of the auricle, and the earphone is fixed on the auricle through the clamping force formed between the ear-hook part and the movement part.

However, because the shape and size of the ear hook of the earphone are fixed, different users have different ear sizes due to different physical conditions, and the ear hook is too large, too loose and unstable to wear for part of people, or the ear hook is too small to clamp the ear when being worn, so that the users feel uncomfortable. In order to overcome this problem, the present inventors have proposed the following technical solutions by continuously correcting various parameters through comfort tests for a large number of users.

The invention content is as follows:

the invention aims to overcome the defects of the prior art and provide an open type earphone with an ear-hang structure according with the human engineering.

In order to solve the technical problem, the invention adopts the following technical scheme: an open earphone, comprising: the ear-hang part of built-in battery unit and the core part of built-in sound generating unit, ear-hang part include: the ear-hang part is in a shape corresponding to the shape from the crus of the helix to the tail of the helix in the auricle of the human body; the machine core part is provided with an inner side surface which is attached to the auricle of a human body when in use, and the inner side surface is provided with a sounding hole; the ear-hanging part is bent backwards from the connecting end of the ear-hanging part connected with the machine core part to form a bent part corresponding to the groove shape on the back of the helix in the auricle of the human body, and a gap for clamping the upper part of the helix in the auricle of the human body is formed between the bent part and the machine core part; the earphone core part is also provided with a rear sound hole, the sound hole and the rear sound hole are respectively positioned at the front side and the rear side of the sound production unit in the earphone core part, and at least one group of connecting lines of the corresponding sound hole and the rear sound hole points to the auditory meatus.

Further, in the above technical solution, the rear sound hole is opened on a peripheral side surface of the core portion adjacent to the gap.

Further, in the above technical solution, the open type earphone simultaneously satisfies the following conditions: (1) An acute included angle is formed between the plane A where the bending part is located and the plane B, the range of the acute included angle is 22-30 degrees, and the plane B is parallel to the plane where the sounding holes are located or the tangent plane of the sounding holes; (2) The included angle between the plane C and the plane D is 62-70 degrees; the plane C is a plane which passes through the central axis of the long axis direction of the core part 2 and is vertical to the plane A; the plane D is a plane that extends along the axis of the battery compartment 13 and is perpendicular to the plane a.

Further, in the above technical solution, the curvature of the curved portion gradually decreases from the connecting end.

Furthermore, in the above technical solution, the movement body has a track shape or an oval shape, and the sound hole is located on one side of the inner side surface close to the gap.

Further, in the above-described aspect, the height of the middle region of the curved portion is 4.5 ± 1mm, and the width is 3.4 ± 1mm.

Furthermore, in the above technical solution, the width of the battery compartment is greater than the width of the middle region of the bending portion, and a smooth transition with gradually widening width is formed between the bending portion and the battery compartment.

Further, in the above technical solution, the width of the battery compartment does not exceed 10.6mm.

Further, in the above technical solution, the width of the gap in the long axis direction of the machine core part is: 6.6-10mm;

further, in the above technical solution, the width of the gap in the short axis direction of the core part is: 6.5-7.2mm.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1. aiming at the open type earphone adopting the ear-hang structure, the invention corresponds the shape of the ear-hang part to the shape from the crus of the auricle to the tail of the auricle of the human body in order to be convenient for wearing, so that the wearing is more stable and the wearing is comfortable for a user.

2. In the invention, the machine core part is provided with the sound emitting hole and the rear sound hole, and the connecting line of the sound emitting hole and the rear sound hole points to the auditory canal. Therefore, the directivity of the sound production of the earphone can be improved, the aim of sound leakage prevention can be achieved, unidirectional concentrated transmission of sound can be achieved, and the aim of directional sound production can be achieved.

3. The earphone optimizes the related parameters of the ear-hang part and the machine core part of the earphone, accords with the human engineering of most people, and improves the wearing comfort under the condition of ensuring the normal wearing of the earphone.

Description of the drawings:

FIG. 1 is a schematic view of a human pinna configuration;

FIG. 2 is a schematic view of an alternate perspective of the human pinna shape;

FIG. 3 is a front view of the present invention;

FIG. 4 is a perspective view of another aspect of the present invention;

FIG. 5 is a front view of the present invention;

FIG. 6 is a top view of the present invention;

FIG. 7 is a schematic view of the present invention as worn;

FIG. 8 is a schematic view of another perspective of the present invention when worn;

the specific implementation mode is as follows:

the invention is further illustrated below with reference to specific embodiments and the accompanying drawings.

The invention relates to an open type earphone which is in accordance with human engineering to improve the wearing comfort. As shown in fig. 2 to 6, the present invention comprises: an ear-hang part 1 and a movement part 2 which are connected with each other.

As shown in fig. 7, the ear-hook part 1 is used to hang on the auricle 3 of human body. The ear-hook part 1 comprises: a connecting part 11 connected with the movement part 2, a bending part 12 and a battery chamber 13 with a built-in battery unit. The ear-hang part 1 is integrally shaped as follows: with a corresponding contouring along the crus 311 to the caudal 312 of the helix 31 in the pinna 3 of the human body. The design is adopted to adapt to the modeling of the helix 31, so that the wearing is stable.

The ear-hang part 1 is bent and extended backwards from the connecting end 11 connected with the movement part 2 to form a bent part 12 corresponding to the shape of a groove 33 on the back of the helix 31 in the auricle 3 of the human body. The curvature of the curved portion 12 gradually decreases from the connection end 11. In addition, a gap 30 for holding the upper part of the helix 31 in the auricle 3 of the human body is formed between the bending part 12 and the movement part 2. The battery compartment 13 is used for internally installing a battery unit and providing power for the movement part 2.

The connecting portion 11, the bending portion 12 and the battery compartment 13 are usually integrally formed by plastic materials, in order to provide support for the whole ear-hanging portion 1, a memory metal material, such as a titanium wire, is disposed in the bending portion 12, the diameter of the memory metal material is generally 0.6-1mm, two ends of the titanium wire are connected and fixedly connected to the connecting portion 11 and the battery compartment 13, respectively, and the shape of the titanium wire corresponds to the bending portion 12.

The movement part 2 is internally provided with a sound production unit, such as a loudspeaker, a control circuit and the like. The movement part 2 is provided with an inner side surface 20 which is attached to the auricle 3 of the human body when in use, and the inner side surface 20 is provided with a sound producing hole 21. The core portion 2 is also provided with a rear sound hole 22.

In this embodiment, the main body of the movement part 2 is in a track shape or an ellipse, and the sound emitting hole 21 is located on one side of the inner side surface 20 close to the gap 30. Since the present invention is an open earphone, the sound-emitting hole 21 is directly located in the ear canal 32, unlike an earplug earphone. The core portion 2 is usually located above the ear canal 32 near the face, and the sound emitting holes 21 are disposed near the gap 30 (i.e., at the back of the face), so that the sound emitting holes 21 are directed toward the ear canal 32 to obtain clear audio effect for the user.

The sound hole 21 and the rear sound hole 22 are respectively positioned at the front side and the rear side of the sound generating unit in the machine core part 2. In order to improve the hearing effect of the user, the front side and the rear side of the diaphragm loudspeaker as the sound generating unit are respectively provided with two independent front sound cavities and two independent rear sound cavities, wherein the sound generating holes 21 are communicated with the front sound cavities, and the rear sound holes 22 are communicated with the rear sound cavities. In order to reduce sound leakage and provide better sound directivity to the earphone office, the line connecting the sound emitting hole 21 and the rear sound hole 22 is directed to the human ear canal 32. Namely, the sound emitting hole 21, the rear sound hole 22, and the ear canal 32 are located on a straight line.

Specifically, since the sound emitting hole 21 is located on the inner side surface 20 of the core portion 2, the rear sound hole 22 is opened on the peripheral side surface of the core portion 2 adjacent to the gap 30 in order to ensure that the line connecting the sound emitting hole 21 and the rear sound hole 22 is aligned with the ear canal 32 of the ear of the human body. So that the line connecting the rear sound hole 22 and the sound emitting hole 21 forms a diagonal line to be directed toward the auditory canal 32.

Usually, the sound emitting hole 21 and the rear sound hole 22 are respectively formed by two holes, and it is only necessary to ensure that the connecting line of the sound emitting hole 21 and the rear sound hole 22 at the corresponding positions points to the ear canal 32. After the technical scheme is adopted, the following advantages are achieved:

1. two independent front sound cavities and two independent rear sound cavities are arranged on the front side and the rear side of the inner sound generating unit of the machine core part 2, the front sound cavities are used as coupling cavities, the volume of the front sound cavities is equal to the volume sum of the volume of the inner cavity of the sound generating unit and the volume sum of the rear sound cavities, and meanwhile, the sound generating holes 21, the rear sound holes 22 and the auditory meatus 32 are located on the same straight line. The leakage sound output from the sound emitting hole 21 and the leakage sound output from the rear sound hole form two corresponding front and rear sound sources, forming a pair of acoustic dipoles. Because the acoustic dipole has characteristic directivity, the sound pressure in the direction of connecting two points between the sound hole 21 and the rear sound hole 22 of the two holes is completely counteracted; the sound pressure is strongest in the direction of the perpendicular bisector of the connecting line of the two points, so that the sound is concentrated and forms two paths of sound to be transmitted to the auditory canal 32 in a single direction along the sound generating holes 21 of the two holes, thereby achieving the purpose of sound leakage prevention and realizing the single-direction concentrated transmission of the sound, namely the purpose of directional sound generation. Even if the wearing of the earphone is deviated, the sound transmitted by the earphone can be transmitted to the auditory canal, and the sound quality is ensured.

Of course, if the sound emitting holes 21 and the rear sound hole 22 are formed by a plurality of arrays of small holes, the center connecting line of the sound emitting holes 21 and the rear sound hole 22 may be directed to the ear canal 32.

As described with reference to fig. 7 and 8, when the present invention is worn, the ear hook part 1 is placed behind the helix 31 and attached along the groove 33 behind the helix 31, and the movement part 2 is attached above the ear canal 32 in front of the helix 31.

In order to improve the wearing comfort of the earphone, better accord with human engineering and improve the wearing stability, the invention carries out specific design on relevant parameters of the earphone and meets the following conditions:

1. an acute included angle B is formed between the plane A where the bending part 22 is located and the plane B, and the plane B is parallel to the plane where the sounding holes 21 are located or the tangent plane of the sounding holes 21. When the medial side 20 is planar, the plane B coincides with the medial side 20. When the inner side surface 20 has a certain curvature, the plane B is a tangent plane at the sound emitting hole 21.

Since the auricle 3 of the human body has an angle with the face, which is about 25-35 °, the invention also needs to adopt a corresponding arrangement in order to fit the auricle 3. In this embodiment, the acute included angle B between the plane where the bending portion 22 is located and the plane B is in the range of 22 ° to 30 °. In the angle range, the earphone can be ensured to adapt to the shape of the auricle 3, necessary clamping force is provided for wearing, and simultaneously, discomfort of a user caused by too small included angle and too large clamping force is avoided.

2. The angle a between the plane C and the plane D is in the range of 62-70 deg. The plane C is a plane passing through the central axis of the core 2 in the long axis direction and perpendicular to the plane a. The plane D is a plane that extends along the axis of the battery compartment 13 and is perpendicular to the plane a.

The angle a between the plane C and the plane D determines the degree of fit between the ear hook 1 and the auricle 3. When the angle is too large, the ear hook 1 cannot fit the auricle 3 completely. Especially, in the battery compartment 13, when the included angle a between the plane C and the plane D is too large, the battery compartment 13 cannot fit the surface of the groove 33 of the auricle 3 to form a certain gap, which may cause the earphone to be worn unstably and to fall off easily. When the angle a between plane C and plane D is too small, the portion of the battery compartment 13 transitions over the surface of the gripping channel 33, creating some pressure which can cause discomfort to the user.

3. The height D1 of the middle region of the curved portion 12 is 4.5 + -1mm, and the width D2 is 3.4 + -1 mm.

In the wearing process of the earphone, the bending part 12 is just positioned above the groove 33, and the groove 33 of the ear of the human body is not a standard circular arc surface, so the radial dimension of the bending part 12 is correspondingly designed by the invention to better conform to the shape of the groove 33 of the ear of the human body.

4. The width of the battery compartment 13 is larger than that of the middle area of the bending part 12, and the bending part 12 and the battery compartment 13 are in smooth transition with gradually widening width. Typically, the width D3 of the battery compartment 13 does not exceed 10.6mm.

The battery compartment 13 also serves to stabilize the headset during wearing of the headset, although it is intended to house the battery unit, and has a weight-balancing effect. The width of the area under the groove 33 of the human ear is obviously larger than the area above the groove 33, so the width dimension of the battery chamber 13 should be larger than the dimension of the bending part 12, which is beneficial to fit and keeps the wearing stability of the earphone.

5. The width of the gap 30 in the long axis direction H1 of the machine core 2 is: 6.6-10mm; the width of the gap 30 in the minor axis direction H2 of the core 2 is: 6.5-7.2mm.

The helix 31 of the auricle 3 is just penetrated by the gap 30 during the wearing of the headset, so the present invention adjusts the size of the gap 30 according to the thickness of the auricle 3, and better fits the auricle.

The following is a result of the wearing comfort detection of the present invention.

The invention is compared with related similar earphone products on the market, and the test process is as follows:

the number of tested persons: 100 persons/group, 3 groups total, total 300 persons. Wherein the proportion of male and female is approximately 1:1. The weight is 42-75 kg.

And (3) testing time: not less than 1 hour.

The diameter of the titanium wire is as follows: 0.6-1mm;

grading standard: the number is 0 to 5 points, 0 points are very poor, 1 points are very poor, 2 points are poor, 3 points are general, 4 points are good, and 5 points are very good.

And (3) testing items:

a. comfort level: whether the ears feel distending pain or fever and are uncomfortable.

b. Tightness degree: sway the head three times slowly/rapidly, jump up three times. See if the earphone will loosen or fall out of the ear;

c. power distribution convenience: the taking and wearing are convenient and easy to operate.

d. Steadiness during movement: running to see if the earphone is loose or out of position.

Through tests, the evaluation scores of the invention are as follows: the comfort level is divided averagely: 3.75; the average degree of tightness is divided into: 3.7; the wearing convenience is divided into: 4.25; the movement stability is divided evenly: 4.2. apparently due to the comparative product.

The earphone optimizes the related parameters of the ear-hang part and the machine core part of the earphone, accords with the human engineering of most people, and improves the wearing comfort under the condition of ensuring the normal wearing of the earphone.

It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. An open earphone, comprising: the ear-hang part of built-in battery unit and the core part of built-in sound generating unit, ear-hang part include: connecting portion, flexion and built-in battery unit's that are connected with core portion battery compartment, its characterized in that:

the shape of the ear-hanging part corresponds to the shape from the crus of the helix to the tail of the helix in the auricle helix of the human body; the inner side surface of the movement part is attached to the auricle of a human body when in use, and a sounding hole is arranged on the inner side surface;

the ear-hanging part is bent backwards from the connecting end of the ear-hanging part connected with the machine core part to form a bent part corresponding to the groove shape on the back of the helix in the auricle of the human body, and a gap for clamping the upper part of the helix in the auricle of the human body is formed between the bent part and the machine core part;

the earphone core part is also provided with a rear sound hole, the sound hole and the rear sound hole are respectively positioned at the front side and the rear side of the sound production unit in the earphone core part, and at least one group of connecting lines of the corresponding sound hole and the rear sound hole points to the auditory meatus.

2. An open earphone as claimed in claim 1, wherein: the rear sound hole is arranged on the peripheral side surface of the machine core part adjacent to the gap.

3. An open earphone as claimed in claim 1, wherein: the open type earphone simultaneously meets the following conditions:

(1) An acute included angle is formed between the plane A where the bending part is located and the plane B, the range of the acute included angle is 22-30 degrees, and the plane B is parallel to the plane where the sounding holes are located or the tangent plane of the sounding holes;

(2) The included angle between the plane C and the plane D is 62-70 degrees; the plane C is a plane which passes through the central axis of the long axis direction of the core part 2 and is vertical to the plane A; the plane D is a plane that extends along the axis of the battery compartment 13 and is perpendicular to the plane a.

4. An open earphone as claimed in claim 1, wherein: the curvature of the bending part is gradually reduced from the connecting end.

5. An open earphone as claimed in claim 1, wherein: the machine core main body is in a track shape or an oval shape, and the sounding hole is positioned on one side of the inner side surface close to the gap.

6. An open earphone as claimed in claim 1, wherein: the height of the middle area of the bending part is 4.5 +/-1 mm, and the width of the middle area of the bending part is 3.4 +/-1 mm.

7. An open earphone as claimed in claim 1, wherein: the width of the battery bin is larger than that of the middle area of the bending part, and the bending part and the battery bin are in smooth transition with gradually widened width.

8. An open earphone as claimed in claim 1, wherein: the width of the battery compartment is not more than 10.6mm.

9. An open earphone as claimed in claim 1, wherein: the width of the gap in the long axis direction of the machine core part is as follows: 6.6-10mm.

10. An open earphone as claimed in claim 1, wherein: the width of the gap in the short axis direction of the machine core part is as follows: 6.5-7.2mm.