Open type earphone

Abstract

The utility model belongs to the technical field of earphones, and more specifically relates to an open earphone. The earphone comprises an earphone body, the earphone body comprises an earphone shell, and a loudspeaker is arranged in the earphone shell; a sound output part is formed at a sound output position, directly facing the loudspeaker, on the earphone shell, an edge sound output hole is formed in the edge of the sound output part, a central sound output part is arranged in the middle of the sound output part, and a central sound output hole is formed in the central sound output part. According to the utility model, through the arrangement of the central sound output part, the problem of high-frequency sound output is effectively solved, and through the cooperation of the central sound output hole and the edge sound output hole, the earphone has a good sound production effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of earphones, and more particularly relates to an open earphone. BACKGROUND

[0002] In use, the earphone body of the open earphone is close to the auricle or the side of the face, so that the edge sound outlet of the earphone body is close to the ear canal opening, which makes the loudness and low frequency effect of the sound emitted by the earphone better, and at the same time, the sound leakage is reduced to the maximum. However, due to the fact that the sound outlet is far away from the center position of the loudspeaker sound emission, the high frequency sound needs to be reflected multiple times in the front cavity of the loudspeaker, resulting in large attenuation and poor high frequency sound effect. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the present application is to provide a sound outlet structure of an open earphone, which can improve the high frequency sound effect.

[0004] An open earphone comprises: an earphone body, the earphone body comprising an earphone shell, a loudspeaker being arranged in the earphone shell; a sound outlet part being formed at a sound emitting position of the earphone shell opposite to the loudspeaker, an edge sound outlet being arranged at the edge of the sound outlet part, and a center sound outlet part being arranged at the middle of the sound outlet part, the center sound outlet part being formed with a center sound outlet.

[0005] Preferably, the center sound outlet part has one center sound outlet or more than two center sound outlets.

[0006] Preferably, the area of the center sound outlet part is 1 / 9-1 / 4 of the area of the sound outlet part.

[0007] Preferably, the center of the center sound outlet part is arranged opposite to the center of the loudspeaker.

[0008] Preferably, the center sound outlet part is circular, and the diameter of the center sound outlet part is 1 / 6-2 / 3 of the diameter of the loudspeaker.

[0009] Preferably, the center sound outlet part is provided with a plurality of center sound outlets arranged at intervals.

[0010] Preferably, when worn, the distance between the edge sound outlet and the external ear canal is 3-15mm.

[0011] Preferably, the edge sound outlet is arranged in the shape of a circular arc, and the central angle B corresponding to the edge sound outlet is 40-150 degrees.

[0012] Preferably, the central angle A of the area of the edge sound outlet corresponding to the center of the center sound outlet part is 0-150 degrees.

[0013] Preferably, the width C of the edge sound outlet is 1-4 times the width E of the diaphragm folding ring of the loudspeaker.

[0014] The beneficial effects achieved by this application are as follows: By setting a central sound outlet, this utility model effectively solves the problem of high-frequency sound output. The cooperation between the central sound outlet and the edge sound outlet makes the headphones have a good sound output effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of an ear structure.

[0017] Figure 2 This is a schematic diagram of a structure for an open-back headphone to fit into the ear.

[0018] Figure 3 This is an exploded view of the headphone body of this application.

[0019] Figure 4 This is a front view of the headphone body of this application.

[0020] Figure 5 This is a front view of the earphone body with markings, as per this application.

[0021] Figure 6 This is a schematic diagram of one type of diaphragm in this application.

[0022] The following are the labeling elements in the figure:

[0023] 1—Ear; 11—External auditory canal; 12—Cavum conchae; 13—Camptotheca conchae; 14—Triangular fossa; 15—Crucula antihelix; 16—Scaphoid fossa; 17—Antihelix; 18—Helix;

[0024] 2 – Headphone body; 21 – Edge sound outlet; 22 – Center sound outlet; 23 – Sound outlet; 24 – Center sound outlet; 25 – Speaker; 26 – Edge dustproof mesh; 27 – Center dustproof mesh; 28 – Headphone shell; 29 – Diaphragm; 210 – Surround;

[0025] 3 - Ear hooks. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0027] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and examples.

[0031] In order to better understand the technical scheme, the present application is exemplified by the ear structure explanation, so as to be combined with the open earphone of the present application; see Figure 1 , the ear 1 of the human body includes: the external auditory canal 11, the concha cavity 12, the concha crus 13, the triangular fossa 14, the antihelix crus 15, the scapha 16, the antihelix 17 and the helix 18.

[0032] It should be noted that, for the convenience of description, the following examples of the present specification will refer to the pair of the upper and lower antihelical crus 15 and the area where the antihelix 17 is located as the antihelix area. In some examples, the earphone can be worn with the aid of one or more parts of the ear 1 to achieve stable attachment of the earphone to the ear. In addition, the outer ear canal 11, the concha cavity 12, the cymba concha 13, the triangular fossa 14, and the like have a certain depth and volume, which can assist in achieving the wearing of the earphone. For example, an in-ear earphone can be worn in the outer ear canal 11, and an open earphone can be worn in the antihelix area by means of the ear hook. In some examples, the earphone can be worn with the aid of other parts of the ear 1 other than the outer ear canal 1. For example, the earphone can be worn with the aid of the cymba concha 13, the triangular fossa 14, the antihelix 15, the scaphal 16, or the helix 18, or a combination thereof.

[0033] In some examples, the earphone can be designed to adapt to the shape of the ear 1 according to the structure of the ear 1 to achieve the wearing of the sound generating part of the earphone in different positions of the ear. For example, an open earphone can include an ear hook 3 and an earphone body 2, the earphone body 2 is connected to the ear hook 3 by a physical means, and the ear hook 3 can be adapted to the shape of the auricle to place the whole or part of the earphone body 2 in the antihelix area.

[0034] In the use of an open earphone, the earphone body 2 is supported by one or more parts of the ear to achieve stable connection of the earphone to the ear. Figure 2 As shown.

[0035] The outer ear canal 11, the concha cavity 12, the cymba concha 13, the triangular fossa 14, and the like of the ear 1 have a certain three-dimensional space, and thus have a certain depth and accommodation space, which can assist in achieving the accommodation and stable wearing of the earphone body 2.

[0036] In order to improve the stability and comfort of the earphone in wearing, the earphone body 2 can be supported by other components such as the ear hook 3 in the present embodiment, or other components such as a head-mounted support.

[0037] The above description of the ear is only for the purpose of assisting in understanding how to assist in using the earphone, and is not intended to limit the scope of the present application. Those skilled in the art can make various changes and modifications according to the description of the present application.

[0038] Figure 2 is a schematic diagram of the structure of an example open earphone worn on the ear according to the present specification. As shown. Figure 2As shown, the open earphone includes: an earphone body; of course, in use, it also includes other auxiliary fixing units, such as a hanging structure, a head-mounted support, etc.; the auxiliary fixing unit is connected with the earphone body, and in use, the earphone body can be tightly attached to the ear 1.

[0039] In actual use, the open earphone can be worn on the ear of the user through the hanging structure. The hanging structure can be an ear hook 3, and the earphone body is connected with one end of the ear hook 3. The ear hook 3 can be provided in a shape suitable for the ear 1 of the user. For example, the ear hook 3 can be a semicircular structure. In some examples, the hanging structure can also be a clamping structure matched with the auricle of the user, which forms a clamping with the auricle of the user and assists in fixing the earphone body.

[0040] Exemplarily, the structure of the ear hook 3 is various, such as the ear hook 3 is an integral structure and is provided in a semicircular structure; for example, the ear hook 3 includes two parts, i.e., an ear hook first part and an ear hook second part; the ear hook first part can be hung between the auricle and the head of the user, and the ear hook second part can extend to the side of the auricle of the user away from the head and be connected with the earphone body.

[0041] Exemplarily, referring to Figures 2 to 5 , the earphone body includes an earphone shell 28, and a loudspeaker 25 is arranged in the earphone shell 28; an acoustic outlet 23 is formed on the earphone shell 28 opposite to the sound outlet position of the loudspeaker 25, an edge acoustic hole 21 is arranged on the edge of the acoustic outlet 23, and a center acoustic outlet 22 is arranged in the middle of the acoustic outlet 23, and the center acoustic outlet 22 forms a center acoustic hole 24.

[0042] When the earphone body is used with the auxiliary fixing unit, the earphone body is located near the external auditory canal, specifically, the acoustic outlet 23 of the earphone body is opposite to the ear and close to the external auditory canal. When the earphone body sounds, the sound includes high frequency, medium frequency and low frequency. It is generally recognized that: high frequency sound refers to sound in the frequency band of 2000-16000 Hz; low frequency sound refers to sound in the frequency band of 20-500 Hz; and medium frequency sound refers to sound in the frequency band of 500 Hz-2000 Hz. Of course, there can be different classifications; different frequencies of sound have different wavelengths.

[0043] The current earphone body generally only uses the edge sound hole 21, which is relatively far from the center position of the sound outlet 23, resulting in that the high frequency sound needs to be reflected multiple times in the front cavity of the earphone body, and then comes out from the edge sound hole 21. Thus, the high frequency sound is attenuated particularly severely when reaching the edge sound hole 21, that is, the high frequency sound at the edge sound hole 21 is not easy to be transmitted into the external auditory canal and received by the person. The wavelength of the middle and low sound is relatively long, which can well reach the edge sound hole 21, and thus the performance is good. However, the high frequency sound is very common in listening to music, so that the effect of the high frequency sound is poor, and the volume often needs to be increased, which is inconvenient for use.

[0044] Therefore, the sound outlet 23 is improved, and a center sound outlet 22 is arranged at the center of the sound outlet 23. The center sound outlet 22 has one center sound hole 24 or more than two center sound holes 24. The high frequency sound emitted from the loudspeaker 25 directly penetrates the center sound hole 24 and enters the external auditory canal along the surface of the ear. Although there is some sound leakage, the performance is still better than the structure with only the edge sound hole 21.

[0045] The center sound hole 24 is mainly arranged to improve the sound effect of the high frequency sound. According to the simple relationship between the wavelength and the sound speed (v) and the frequency (f): λ=v / f, it can be known that the sound speed in the air is basically relatively stable and unchanged, and the sound wave of the high frequency sound is very small, so a center sound hole can be arranged at the center sound outlet, and the aperture of the center sound hole can also be relatively small.

[0046] When the center sound hole 24 is arranged in multiple, the center sound hole is preferably circular and arranged in a row. A center sound outlet 22 is formed; the sound emitted by the diaphragm 29 is concentrated in the middle, especially the high frequency sound, and the center sound hole 24 is arranged in a row in the middle of the sound outlet 23, which is beneficial to the penetration of the high frequency sound.

[0047] Exemplarily, refer to Figures 3 to 5 In this embodiment, the sound outlet 23 is arranged to be circular and slightly outwardly protruded relative to the surface of the earphone shell 28, so that the sound outlet 23 can further extend into the antihelix area or be closer to the external auditory canal 11 when cooperating with the ear 1.

[0048] Exemplarily, refer to Figure 3 When the earphone body works, the sound emitted by the diaphragm 29 is almost all projected to the sound outlet 23, so the sound outlet 23 needs to collect the sound as much as possible and avoid losing the sound when being designed. The diameter of the sound outlet 23 is slightly larger than the diameter of the diaphragm 29, and the projection can completely cover the diaphragm 29. Considering the sound divergence type propagation, the diameter of the sound outlet 23 can be 1.1-1.2 times of the diameter of the diaphragm 29.

[0049] Secondly, the center sound outlet 22 is the main penetration position of high frequency sound, and needs to obtain better high frequency sound effect. The center sound outlet 22 needs to receive most of the high frequency sound emitted by the diaphragm 29. Considering that the wavelength of high frequency sound is short, the area of the center sound outlet 22 is not easy to design large in the design of the center sound outlet 22. After many simulations and tests, when the area of the center sound outlet 22 accounts for 1 / 9-1 / 4 of the area of the sound outlet 23, the high sound volume obtained by the center sound outlet reaches an optimal value.

[0050] Exemplarily, as described above, the center sound outlet 22 is used for the penetration of high frequency sound, and the high frequency sound is mainly located in the center position in the sound emission of the diaphragm 29. In order to make the high frequency sound quickly pass through the sound outlet 22 and reduce reflection loss, preferably, the center of the center sound outlet 22 is arranged opposite to the center of the loudspeaker 25, that is, the center of the center sound outlet 22 is on the central axis of the loudspeaker 25.

[0051] Secondly, the center sound outlet 22 needs to receive most of the penetration of high frequency sound emitted by the diaphragm 29, and the center sound outlet 22 needs to cover the concentrated area of high frequency sound. The area of the center sound outlet 22 is designed to be small, which results in low penetration rate of high frequency sound. The area of the center sound outlet 22 is designed to be large, which results in that most of the center sound holes do not have much high frequency sound passing through, and also increases the processing cost.

[0052] After simulation and actual test, the center sound outlet 22 needs to reach a certain proportion. For example, when the center sound outlet 22 is circular, the diameter of the center sound outlet 22 is 1 / 6-2 / 3 of the diameter of the loudspeaker 25. As shown in the figure, the diameter of the center sound outlet 22 is D. Figure 5

[0053] Because the shape of the loudspeaker 25 can be other polygons and the like for modeling and other designs of the open earphone, the effective area can be used to design the center sound outlet 22 at this time. The area of the center sound outlet is designed through the proportional relationship of the effective area, and the shape of the center sound outlet 22 is the same as or similar to the shape of the loudspeaker.

[0054] Exemplarily, the earphone body is basically exposed to the outside when the open earphone is used, that is, dust will inevitably enter the earphone shell 28 from the edge sound hole 21 and the center sound hole 24 when the earphone body is used, thereby polluting the internal environment.

[0055] In order to avoid this situation, a dust screen is generally arranged. In the embodiment, the edge dust screen 26 is arranged opposite to the edge sound hole 21 in the earphone shell 28, and the center dust screen 27 is arranged corresponding to the center sound outlet 22.

[0056] ​In order to further improve the effect of the high frequency sound penetrating through the center sound hole 24, the center sound hole 24 is arranged in multiple intervals. Of course, one center sound hole 24 can also be arranged. Since the wavelength of the high frequency sound is relatively short, when one center sound hole 24 is arranged, the diameter of the center sound hole 24 needs to be designed to be relatively large, but the effect is still relatively poor.

[0057] It is known that the edge sound hole 21 is used for the penetration of the low frequency sound. When the earphone body is close to the ear, the earphone body is generally in an inclined state. For example, as shown in Figure 2 , in use, the earphone body is obliquely cut into the ear from the antihelix foot and the tragus of the ear 1. The earphone body is located obliquely above the external auditory canal 11, and the sound emitting part 23 of the earphone body is located at the cymba concha or / and the cavum conchae of the ear. In order to improve the effect of the low frequency sound, when worn, the distance between the edge sound hole 21 and the external auditory canal is 3-15mm; the sound leakage can be effectively reduced.

[0058] For example, referring to Figure 4 , Figure 5 ; the edge sound hole 21 can be arranged in a circular arc shape. After the sound is emitted from the diaphragm 29, it spreads in all directions. By arranging the edge sound hole 21 in a circular arc shape, the distance between the points on the same circular arc of the edge sound hole 21 and the center of the diaphragm 29 is approximately equal, so that the phases of the low frequency sound penetrating from each part of the edge sound hole 21 are approximately the same, and the phenomenon of sound interference basically does not occur.

[0059] After the earphone body is attached to the ear, the sound emitting part 23 of the earphone body is located at the cymba concha 13 or / and the cavum conchae 12 of the ear, and is inclined towards the ear canal opening. The corresponding central angle B of the edge sound hole 21 is 40-150 degrees. Within this range, the low frequency sound effect of the edge sound hole 21 can be relatively good, and the attenuation of the low frequency sound is relatively low, and the proportion of sound leakage is relatively low.

[0060] Considering the effect of the edge sound hole 21, the area of the edge sound hole 21 corresponds to the central angle A of the center, and A is 0-150 degrees; the sound leakage can be effectively reduced.

[0061] For example, referring to Figure 6 , in order to avoid sound wave interference of the edge sound hole 21, the width C of the edge sound hole 21 needs to be limited; the width C of the edge sound hole is 1-4 times the width E of the diaphragm folding ring 210 of the horn 25.

[0062] The above are only preferred embodiments of the present application, and only the technical principles of the present application are specifically described, and these descriptions are only for explaining the principles of the present application, and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the explanation herein, any modification, equivalent replacement and improvement made within the spirit and principles of the present application, and other specific embodiments of the present application that can be conceived by those skilled in the art without creative labor, should be included in the protection scope of the present application.

Claims

1. An open-back headphone, comprising a headphone body, the headphone body including a headphone shell, a speaker disposed within the headphone shell; a sound outlet portion is formed on the headphone shell opposite the sound outlet position of the speaker, and an edge sound outlet hole is provided at the edge of the sound outlet portion, characterized in that: The middle part of the sound outlet is provided with a center sound outlet, and the center sound outlet is formed with a center sound hole.

2. An open earphone as claimed in claim 1, characterized in that: The center sound outlet has one center sound hole or more than two center sound holes.

3. An open earphone as claimed in claim 1, characterized in that: The area of the center sound outlet is 1 / 9-1 / 4 of the area of the sound outlet.

4. An open earphone as claimed in claim 1, characterized in that: The center of the center sound outlet is opposite to the center of the loudspeaker.

5. An open earphone as claimed in claim 1, characterized in that: The center sound outlet is circular, and the diameter of the center sound outlet is 1 / 6-2 / 3 of the diameter of the loudspeaker.

6. An open earphone as claimed in claim 1, characterized in that: The center sound outlet is provided with a plurality of center sound holes arranged at intervals.

7. An open earphone as claimed in claim 1, characterized in that: The distance between the edge sound hole and the external auditory canal is 3-15mm.

8. An open earphone as claimed in claim 1, characterized in that: The edge sound hole is arranged in a circular arc shape, and the corresponding central angle B of the edge sound hole is 40-150 degrees.

9. An open earphone as claimed in claim 1 or 8, characterized in that: The area of the edge sound hole corresponds to the central angle A of the center of the center sound outlet, which is 0-150 degrees.

10. An open earphone as claimed in claim 1, characterized in that: The width C of the edge sound hole is 1-4 times the width E of the folded ring of the diaphragm of the loudspeaker.

Images