CN221710056U - Sound leakage prevention earphone - Google Patents

Abstract

The utility model provides an anti-sound leakage earphone, belonging to the technical field of earphone body, comprising an earphone body, and a first sound leakage hole and a second sound leakage hole group arranged on the earphone body; the earphone body comprises a first end face and at least two second end faces, the two second end faces are arranged oppositely, the first sound leakage hole is arranged on the first end face, and the second sound leakage hole group is arranged on the second end face; wherein the second sound leakage hole group in each second end face comprises two or more second sound leakage holes, the second sound leakage hole is used to be away from the ear canal, and the first sound leakage hole is used to be close to the ear canal. Through this arrangement, the sound wave transmission of the multi-pole sound source is realized, so that the low-frequency output at the user's eardrum can be increased while reducing the sound leakage, and the user's listening experience can be significantly improved.

Description

Anti-leakage sound earphone

Technical Field

The utility model belongs to the technical field of earphone bodies, and in particular relates to an anti-sound leakage earphone.

Background Art

Earphones (Earphones, Headphones, Head-sets, Earpieces) are a pair of conversion units that receive electrical signals from a media player or receiver and convert them into audible sound waves using speakers close to the ears. The earphones include open earphones.

The open-type earphone body usually has one or two sound leakage holes on the rear cavity shell behind the speaker diaphragm. The sound wave phase of the rear cavity sound leakage hole is close to the sound wave amplitude of the front cavity sound outlet hole in front of the speaker diaphragm, and the phase is opposite, thus forming an even-level sound source, which reduces the external sound pressure after the superposition of the two, thereby achieving the purpose of reducing sound leakage.

However, since only one or two sound leakage holes are provided, the sound leakage holes have a small degree of freedom in processing sound waves, resulting in an inability to accurately reduce sound leakage in the target area, thereby affecting the user's listening experience.

Utility Model Content

Based on this, the purpose of the utility model is to provide an anti-sound leakage earphone to solve the technical problem that the existing earphone body in the above-mentioned background technology is only provided with one or two sound leakage holes, and the sound leakage holes have a small degree of freedom in processing sound waves, resulting in the inability to accurately reduce the sound leakage in the target area, thereby affecting the user's listening experience.

The utility model provides an anti-sound leakage earphone, an earphone body, and a first sound leakage hole and a second sound leakage hole group arranged on the earphone body;

The earphone body comprises a first end surface and at least two second end surfaces, the two second end surfaces are arranged opposite to each other, the first sound leakage hole is arranged on the first end surface, and the second sound leakage hole group is arranged on the second end surface;

Wherein, the second sound leakage hole group in each of the second end faces includes two or more second sound leakage holes, the second sound leakage holes are used to be away from the ear canal, and the first sound leakage holes are used to be close to the ear canal.

Furthermore, the second end surface includes a second-first sub-end surface and a second-second sub-end surface, and the second-first sub-end surface and the second-second sub-end surface are arranged opposite to each other.

Further, a part of the second sound leakage holes in the second sound leakage hole group is arranged on the second-first sub-end surface, and another part of the second sound leakage holes in the second sound leakage hole group is arranged on the second-second sub-end surface.

Further, the second sound leakage hole in the second-first sub-end surface and the second sound leakage hole in the second-second sub-end surface are symmetrically arranged.

Further, a distance between each of the second sound leakage holes in the second-first sub-end surface and the first sound leakage hole is greater than a distance between each of the second sound leakage holes in the second-second sub-end surface and the first sound leakage hole.

Further, the second sound leakage hole in the second-first sub-end surface and the second sound leakage hole in the second-second sub-end surface are arranged asymmetrically.

Further, the distance between each of the second sound leakage holes and the first sound leakage hole in the second-first sub-end surface is equal to the distance between each of the second sound leakage holes and the first sound leakage hole in the second-second sub-end surface.

Compared with the prior art, the beneficial effects of the present invention are:

By arranging the first sound leakage hole and the second sound leakage hole group on the earphone body in the anti-sound leakage earphone of this embodiment, the multiple second sound leakage holes in the first sound leakage hole and the second sound leakage hole group can be used in conjunction with the first sound leakage hole to realize the sound wave transmission of the multi-pole sound source. Compared with the traditional dipole sound source method, the utility model transmits and processes the sound waves through a multi-level sound source, thereby greatly improving the degree of freedom. While reducing sound leakage, the low-frequency output at the user's eardrum is increased, thereby significantly improving the user's listening experience.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is an assembly diagram of a sound leakage-proof earphone according to a first embodiment of the present invention;

FIG2 is a perspective view of an earphone body according to the first embodiment of the present invention;

FIG3 is a three-dimensional cross-sectional view of the earphone body of the first embodiment of the present invention;

FIG. 4 is a three-dimensional cross-sectional view of an earphone body according to a second embodiment of the present invention.

Description of the drawings: 100, earphone body; 110, first end face; 120, second end face; 121, second-first sub-end face; 122, second-second sub-end face; 200, first sound leakage hole; 300, second sound leakage hole group; 310, second sound leakage hole b; 320, second sound leakage hole c; 330, second sound leakage hole d; 340, second sound leakage hole e; 400, damping mesh.

DETAILED DESCRIPTION

In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings. Several embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and/or" used herein includes any and all combinations of one or more related listed items.

First embodiment

Please refer to FIG. 1 to FIG. 3 , which show an anti-sound leakage earphone provided by an embodiment of the present invention, including an earphone body 100 , and a first sound leakage hole 200 and a second sound leakage hole group 300 provided on the earphone body 100 ;

The earphone body 100 includes a first end surface 110 and at least two second end surfaces 120, the two second end surfaces 120 are arranged opposite to each other, the first sound leakage hole 200 is arranged on the first end surface 110, and the second sound leakage hole group 300 is arranged on the second end surface 120;

The second sound leakage hole group 300 in each second end surface 120 includes two or more second sound leakage holes, the second sound leakage holes are used to be away from the ear canal, and the first sound leakage holes 200 are used to be close to the ear canal.

In the present embodiment, the first sound leakage hole 200 is provided on the first end surface 110, and the second sound leakage hole group 300 is provided on the second end surface 120. That is to say, in actual conditions, by arranging the first sound leakage hole 200 and the second sound leakage hole group 300 on the earphone body 100, the first sound leakage hole 200 and the plurality of second sound leakage holes in the second sound leakage hole group 300 can be used in conjunction with the first sound leakage hole 200 to realize the transmission of sound waves of multi-pole sound sources. Compared with the traditional dipole sound source method, in the present embodiment, the sound waves are transmitted and processed by multi-stage sound sources, thereby greatly improving the degree of freedom, achieving the reduction of sound leakage while increasing the low-frequency output at the user's eardrum, thereby significantly improving the user's listening experience.

Specifically, the second end face includes a second-first sub-end face 121 and a second-second sub-end face 122, and the second-first sub-end face 121 and the second-second sub-end face 122 are arranged relative to each other, a part of the second sound leakage holes in the second sound leakage hole group 300 are arranged on the second-first sub-end face 121, and another part of the second sound leakage holes in the second sound leakage hole group 300 are arranged on the second-second sub-end face 122, and the second sound leakage holes in the second-first sub-end face 121 and the second sound leakage holes in the second-second sub-end face 122 are symmetrically arranged.

Specifically, the distance between each second sound leakage hole in the second-first sub-end surface 121 and the first sound leakage hole 200 is greater than the distance between each second sound leakage hole in the second-second sub-end surface 122 and the first sound leakage hole 200 .

To further understand the present case, please refer to Figure 3. In some preferred embodiments, the number of second sound leakage holes in the second sound leakage hole group 300 can be 4, specifically, they are second sound leakage hole b310, second sound leakage hole c320, second sound leakage hole d330 and second sound leakage hole e340. The first sound leakage hole 200 can be marked as the first sound leakage hole a, that is, the first sound leakage hole 200. It should be noted that the second sound leakage hole b310, second sound leakage hole c320, second sound leakage hole d330 and second sound leakage hole e340 exemplified in this embodiment do not limit the number of second sound leakage holes in the second sound leakage hole group 300, and it can also be 6, 8, etc.

Specifically, the second sound leakage hole b310, the second sound leakage hole c320, the second sound leakage hole d330 and the second sound leakage hole e340 are all arranged on the second end surface 120. When the user wears the earphone, the sound pressure vector entering the user's ear canal opening is is the sum of the sound pressure vectors transmitted from the five sound holes, that is,

in, is the sound pressure transmitted from the first sound leakage hole 200, which is the sound pressure transmitted from the front sound hole of the earphone in actual situations. to is the sound pressure of the four second sound leakage holes in the second sound leakage hole group 300. In actual situations, it is the sound pressure transmitted from the sound leakage holes in the back cavity of the earphone. When the user wears the earphone to listen to music, other people around are far away from the earphone. It can be roughly assumed that the distance from the five sound holes of the earphone to the ear canal of other people is equal, and all are far-field sound propagation. At this time, the sound pressure of the first sound leakage hole 200 is The sound pressure of the second sound leakage hole group 300 The phases are opposite and the amplitudes are approximately equal, so that the total sound pressure at the ear canals of other people after superposition is close to 0, so that other people around cannot hear the sound from the headphones, thus achieving the effect of preventing sound leakage; on the contrary, for the user himself, the five sound holes are very close to the user's ear canal, so the distance and angle differences between them from the ear canal opening cannot be ignored, and these differences also make the sound pressure of the front cavity sound hole Sound pressure of the rear cavity sound leakage hole The phases are not strictly opposite, and the amplitudes are also quite different, so the total sound pressure at the user's ear canal opening after superposition It is not 0, allowing users to listen to music normally. The four second sound leakage holes have a higher degree of freedom and better effect in suppressing sound leakage of headphones compared to the traditional single rear cavity sound leakage hole or double rear cavity sound leakage hole.

Specifically, the front cavity sound outlet hole of a traditional open-type earphone, which corresponds to the first sound leakage hole 200 in this embodiment, is usually not in the center of the earphone front cavity outer shell surface, but is slightly downward to face the user's ear canal opening to achieve maximum barrier-free transmission of sound waves. For the sake of appearance, traditional open-type earphones, if they have a single rear cavity sound leakage hole, will be directly opened in the center of the rear cavity outer shell. If they have double rear cavity sound leakage holes, the two holes are usually distributed symmetrically up and down along the center line of the back of the earphone, that is, the two holes are respectively located on the upper and lower sides of the earphone back shell. Therefore, the distance between the traditional double rear cavity sound leakage hole and the user's ear canal opening is not equal, which will cause phase difference to a certain extent, which is not conducive to the suppression of sound leakage. In this case, four second sound leakage holes are adopted, and they can also be arranged symmetrically up and down for the sake of beauty.

In some other preferred embodiments, a damping mesh 400 may be provided on each second sound leakage hole in the second sound leakage hole group 300. By adjusting the damping mesh 400 on the four second sound leakage holes, the phase of the sound waves transmitted from the sound source of each second sound leakage hole to the outside world can be additionally optimized. For example, the second sound leakage hole d330 and the second sound leakage hole e340, which are closer to the first sound leakage hole 200a, preferably use a mesh with high acoustic damping, and the second sound leakage hole b310 and the second sound leakage hole c320, which are farther from the first sound leakage hole 200a, preferably use a mesh with low acoustic damping to compensate for the phase difference of the sound waves transmitted to the outside world by the four holes, so that they are as in phase as possible, so as to be closer to the anti-phase superposition with the phase of the sound waves transmitted to the outside world by the first sound leakage hole 200a, so as to achieve the minimum sound leakage effect.

Furthermore, the second sound leakage hole b310, the second sound leakage hole c320 or the second sound leakage hole d330, and the second sound leakage hole e340 can also be covered with meshes with different sound damping, so as to fine-tune the sound wave phases of the four holes at different angles, so as to achieve the angle-related sound leakage elimination amount in a targeted manner. The maximum elimination amount can be achieved at a certain angle that is more sensitive to sound leakage.

It should be noted that, in order to facilitate understanding of the present case, the damping mesh 400 is not marked in FIG. 3 .

In summary, the sound leakage-proof earphone provided in the first embodiment of the present invention has at least the following beneficial effects compared with the earphones in the prior art:

By arranging the first sound leakage hole 200 and the second sound leakage hole group 300 on the earphone body 100 of the anti-sound leakage earphone in this embodiment, the first sound leakage hole 200 and the plurality of second sound leakage holes in the second sound leakage hole group 300 can be utilized in conjunction with the first sound leakage hole 200 to realize the sound wave transmission of the multi-pole sound source. Compared with the traditional dipole sound source method, the utility model transmits and processes the sound waves through a multi-level sound source, thereby greatly improving the degree of freedom, while reducing sound leakage, increasing the low-frequency output at the user's eardrum, thereby significantly improving the user's listening experience.

Second embodiment

Please refer to FIG. 4 , a second embodiment provides an anti-sound leakage earphone. The anti-sound leakage earphone in this embodiment is different from the anti-sound leakage earphone in the first embodiment in that, in this embodiment;

The second sound leakage holes in the second first sub-end surface 121 and the second sound leakage holes in the second second sub-end surface 122 are arranged asymmetrically;

Furthermore, the distance between each second sound leakage hole in the second-first sub-end surface 121 and the first sound leakage hole 200 is equal to the distance between each second sound leakage hole in the second-second sub-end surface 122 and the first sound leakage hole 200 .

Specifically, in this embodiment, the second sound leakage hole group 300 can also adopt 4 second sound leakage holes, namely, second sound leakage hole b310, second sound leakage hole c320, second sound leakage hole d330 and second sound leakage hole e340. The four second sound leakage holes are asymmetrically arranged, and the distance between each second sound leakage hole and the first sound leakage hole 200 is equal. Through this arrangement, the four second sound leakage holes can be covered with the same damping mesh cloth 400, which can not only achieve the optimal sound leakage suppression effect, but also reduce the number of models of incoming damping mesh cloth 400, facilitate production line operations, and reduce production costs.

It should be noted that, in order to facilitate understanding of the present case, the damping mesh 400 is not marked in FIG. 4 .

In summary, the sound leakage prevention earphone provided in the second embodiment of the present invention has at least the following beneficial effects compared with the sound leakage prevention earphone provided in the first embodiment:

In this embodiment, the position of each second sound leakage hole in the second sound leakage hole group 300 is limited to achieve the optimal sound leakage suppression effect, and the number of models of the damping mesh cloth 400 can also be reduced, which facilitates production line operations and reduces production costs.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims (8)

1. An anti-sound leakage earphone, characterized by comprising an earphone body, and a first sound leakage hole and a second sound leakage hole group provided on the earphone body; The earphone body comprises a first end surface and at least two second end surfaces, the two second end surfaces are arranged opposite to each other, the first sound leakage hole is arranged on the first end surface, and the second sound leakage hole group is arranged on the second end surface; Wherein, the second sound leakage hole group in each of the second end faces includes two or more second sound leakage holes, the second sound leakage holes are used to be away from the ear canal, and the first sound leakage holes are used to be close to the ear canal. 2. The sound leakage-proof earphone according to claim 1, characterized in that the second end surface includes a second-first sub-end surface and a second-second sub-end surface, and the second-first sub-end surface and the second-second sub-end surface are arranged opposite to each other. 3. The sound leakage-proof earphone according to claim 2 is characterized in that a part of the second sound leakage holes in the second sound leakage hole group is arranged on the second-first sub-end surface, and another part of the second sound leakage holes in the second sound leakage hole group is arranged on the second-second sub-end surface. 4. The sound leakage-proof earphone according to claim 3, characterized in that the second sound leakage hole in the second-first sub-end surface and the second sound leakage hole in the second-second sub-end surface are symmetrically arranged. 5. The sound leakage-proof earphone according to claim 4, characterized in that the distance between each of the second sound leakage holes in the second-first sub-end surface and the first sound leakage hole is greater than the distance between each of the second sound leakage holes in the second-second sub-end surface and the first sound leakage hole. 6. The sound leakage-proof earphone according to claim 3, characterized in that the second sound leakage hole in the second-first sub-end surface and the second sound leakage hole in the second-second sub-end surface are asymmetrically arranged. 7. The sound leakage-proof earphone according to claim 6, characterized in that the distance between each of the second sound leakage holes in the second-first sub-end surface and the first sound leakage hole is equal to the distance between each of the second sound leakage holes in the second-second sub-end surface and the first sound leakage hole. 8. The sound leakage-proof earphone according to claim 1, characterized in that each of the second sound leakage holes in the second sound leakage hole group is provided with a damping mesh.