Open type earphone

Abstract

The utility model provides an open type earphone, which comprises a shell, a loudspeaker and a feedback microphone, and is characterized in that the shell is provided with a dome, and the loudspeaker is arranged in the shell and is matched with the dome to define a front cavity; the dome is provided with a lower half area, the dome is provided with a sound outlet hole, a groove and a channel, the groove is formed in the center of the dome and communicated with the front cavity, the channel extends to the edge of the lower half area from the center of the dome in the length direction of the shell, one end of the channel is communicated with the groove, and the other end of the channel penetrates through the outer surface, away from the front cavity, of the dome. A guide opening is formed; the feedback microphone is arranged in the groove and provided with a first pickup hole, and the first pickup hole is correspondingly communicated with the channel. When the earphone is worn and used, the lower half area corresponds to an ear triangular fossa area, and the guide opening is closer to an ear canal inlet, so that sound picked by the feedback microphone through the first pickup hole, the channel and the guide opening is closer to sound heard at the ear tympanic membrane of a user, and the active noise reduction effect can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of earphones, and more specifically, to an open earphone. Background Art

[0002] The characteristic of open-type headphones is that they do not enter the ear canal. The sound is transmitted to the user's ear canal through the air. Since open-type headphones do not enter the ear, they will not directly stimulate the eardrum, thereby greatly reducing damage to the ear, and are therefore very popular among consumers.

[0003] When users use open-back headphones, they can receive external sounds and sounds emitted by the headphones at the same time. In order to reduce noise, some open-back headphones are designed with noise reduction functions. Among them, noise reduction functions are generally divided into passive noise reduction and active noise reduction. Passive noise reduction is achieved by using materials such as silicone ear caps and leather covers inside the headphones to isolate the ear canal from the outside world as much as possible and weaken the transmission of external sound waves; the active noise reduction function collects ambient noise through the feedback microphone in the headphones, and then analyzes and processes it through the built-in circuit board to generate sound waves with an opposite phase to the noise, thereby offsetting the ambient noise.

[0004] Currently, the front cavity of open headphones is dome-shaped, and there is a large space between the center of the dome and the speaker. By placing the feedback microphone in the center of the dome, the thickness of the shell does not need to be increased or the increased thickness is small. However, after the headphones are worn, the center of the dome is far away from the entrance of the ear canal, so the sound picked up by the feedback microphone is quite different from the sound heard at the periosteum of the ear, resulting in poor active noise reduction effect. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide an open-type headset to solve the technical problem in the prior art that the feedback microphone is arranged at the center of the dome, resulting in a large deviation in the sound picked up by the feedback microphone, leading to poor active noise reduction effect.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide an open-type headset, including a shell, a speaker and a feedback microphone, the shell is formed with a dome, the speaker is arranged in the shell and cooperates with the dome to form a front cavity; the dome has a lower half area, the dome is provided with a sound outlet hole, a groove and a channel, the sound outlet hole is arranged in the lower half area and is connected to the front cavity, the groove is arranged at the center of the dome and is connected to the front cavity, the channel extends from the center of the dome to the edge of the lower half area along the length direction of the shell, one end of the channel is connected to the groove, and the other end of the channel passes through the outer surface of the dome away from the front cavity to form a guide port; the feedback microphone is arranged in the groove, the feedback microphone is provided with a first sound pickup hole, and the first sound pickup hole is correspondingly connected to the channel.

[0007] In one embodiment, a protrusion is provided on the inner surface of the dome facing the front cavity, and the protrusion extends from the center of the dome to the edge of the dome along the length direction of the shell, the groove is opened on the protrusion, and the channel passes through the protrusion.

[0008] In one embodiment, the protrusion is integrally formed with the dome.

[0009] In one of the embodiments, the feedback microphone is disposed in the groove.

[0010] In one embodiment, the feedback microphone is rectangular, and the shape of the groove is adapted to the feedback microphone.

[0011] In one embodiment, the shell includes a first shell and a second shell, the first shell and the second shell are connected to form a storage space, the speaker is arranged in the storage space, the dome is part of the first shell, and protrudes in a convex arc shape in a direction away from the second shell.

[0012] In one of the embodiments, the shell is further provided with a first through hole, which is provided on the peripheral side of the shell or on the side of the shell facing away from the dome. The open earphone also includes a feedforward microphone arranged in the shell, and the feedforward microphone is provided with a second sound pickup hole, which is correspondingly connected to the first through hole.

[0013] In one of the embodiments, the shell is further provided with a second through hole, which is arranged at the bottom of the shell. The open earphone also includes a call microphone arranged in the shell, and the call microphone is provided with a third sound pickup hole, which is correspondingly connected to the second through hole.

[0014] In one embodiment, the open earphone further includes an ear hook, one end of which is connected to the housing.

[0015] In one of the embodiments, the open earphone further includes a rotating assembly, and one end of the ear hook is rotatably connected to the shell through the rotating assembly.

[0016] Compared with the prior art, the open earphones provided by the present application have the following advantages. When worn, the shell fits the user's ear, the dome faces and covers the user's ear, and the sound output by the speaker is transmitted to the user's ear canal through the sound outlet hole. A groove is provided at the center of the dome, and the feedback microphone is arranged in the groove, so that the feedback microphone is arranged at the center of the dome. The space between the center of the dome and the speaker is large. Therefore, by arranging the feedback microphone at the center of the dome, the thickness of the shell does not need to be increased or the increased thickness is small. By extending the channel from the center of the dome to the edge of the lower half area along the length direction of the shell, when worn, the lower half area corresponds to the triangular fossa area of ​​the ear, and the guide port is close to the entrance of the ear canal, so that the sound picked up by the feedback microphone through the first sound pickup hole, the channel and the guide port is closer to the sound heard at the eardrum of the user's ear, which is beneficial to improving the effect of active noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of an open-type earphone provided in an embodiment of the present application;

[0019] Figure 2 For along Figure 1 The cross-sectional structure diagram along the AA line;

[0020] Figure 3 A schematic diagram of the structure of the first shell provided in an embodiment of the present application.

[0021] Description of main reference numerals:

[0022] 10. Shell; 11. Dome; 111. First side; 112. Second side; 113. Lower area; 114. Upper area; 115. Inner surface; 116. Outer surface; 12. Front cavity; 13. Sound outlet; 14. Groove; 15. Channel; 151. Guide port; 16. Raised portion; 17. First shell; 18. Second shell; 20. Speaker; 30. Feedback microphone; 31. First sound pickup hole; 40. Circuit board; K. Dotted line; F1. Length direction; F2. Width direction; 50. Ear hook; 60. Rotating assembly. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" 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", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0029] Please also read Figures 1 to 3 , an open-type earphone is now described in an embodiment of the present application.

[0030] Please also read Figure 1 and Figure 2The open earphone includes a shell 10, a speaker 20 and a feedback microphone 30. The shell 10 is formed with a dome 11. The speaker 20 is arranged in the shell 10 and cooperates with the dome 11 to form a front cavity 12. The dome 11 has a lower half area 113. The dome 11 is provided with a sound outlet 13, a groove 14 and a channel 15. The sound outlet 13 is arranged in the lower half area 113 and is connected to the front cavity 12. The groove 14 is arranged at the center of the dome 11 and is connected to the front cavity 12. The channel 15 extends from the center of the dome 11 to the edge of the lower half area 113 along the length direction F1 of the shell 10. One end of the channel 15 is connected to the groove 14, and the other end of the channel 15 passes through the outer surface 116 of the dome 11 away from the front cavity 12 to form a guide port 151. The feedback microphone 30 is arranged in the groove 14. The feedback microphone 30 is provided with a first sound pickup hole 31, and the first sound pickup hole 31 is correspondingly connected to the channel 15.

[0031] Specifically, see Figure 1 The two sides of the dome 11 along the width direction F2 of the shell 10 are respectively the first side 111 and the second side 112. The dome 11 is divided into a lower area 113 and an upper area 114 along the width direction F2 of the shell 10. The lower area 113 is arranged close to the first side 111, and the upper area 114 is arranged close to the second side 112. For ease of understanding, the lower area 113 and the upper area 114 are divided by a dotted line K. When worn, the first side 111 is located below the second side 112, the lower area 113 is located below the upper area 114, and the lower area 113 corresponds to the triangular fossa area of ​​the ear, and the guide port 151 is directly opposite to the entrance of the user's ear canal.

[0032] Please also read Figure 1 and Figure 2 The dome 11 has an inner surface 115 and an outer surface 116 that are arranged opposite to each other, the inner surface 115 faces the front cavity 12, and the outer surface 116 faces away from the front cavity 12. The sound outlet hole 13 runs through the inner surface 115 and the outer surface 116 of the lower half area 113, and the sound output by the speaker 20 is transmitted to the user's ear canal through the sound outlet hole 13; the guide port 151 runs through the outer surface 116 at the edge of the lower half area 113, and the feedback microphone 30 picks up the sound in the user's ear canal through the first sound pickup hole 31, the channel 15 and the guide port 151.

[0033] Compared with the prior art, the open earphone provided by the present application is that when worn, the shell 10 fits the user's ear, the dome 11 faces and covers the user's ear, and the sound output by the speaker 20 is transmitted to the user's ear canal through the sound outlet 13. By opening a groove 14 at the center of the dome 11 and arranging the feedback microphone 30 in the groove 14, the feedback microphone 30 is arranged at the center of the dome 11, and the space between the center of the dome 11 and the speaker 20 is large. Therefore, by arranging the feedback microphone 30 at the center of the dome 11, the thickness of the shell 10 does not need to be increased or the increased thickness is small, and by Along the length direction F1 of the shell 10, it extends from the center of the dome 11 to the edge of the lower half area 113. When worn, the lower half area 113 corresponds to the triangular fossa area of ​​the ear, and the guide port 151 is closer to the entrance of the ear canal. It can be understood that the channel 15 can guide the first sound pickup hole 31 of the feedback microphone 30 to a position closer to the entrance of the ear canal, that is, the more concentrated sound in the ear canal can be guided to the feedback microphone 30 through the channel 15, so that the sound picked up by the feedback microphone 30 through the first sound pickup hole 31, the channel 15 and the guide port 151 is closer to the sound heard at the eardrum of the user's ear, which is conducive to improving the effect of active noise reduction. It can be understood that the present application can obtain a better noise reduction effect without increasing the thickness of the shell 10 or with a small increase in thickness.

[0034] Please note that Figure 2 The open-ear headphones also include a circuit board 40. The speaker 20 and the feedback microphone 30 are both electrically connected to the circuit board 40. When active noise reduction is performed, the feedback microphone 30 feeds back the picked-up sound signal to the circuit board 40. After the circuit board 40 analyzes and processes the sound signal, it generates a sound wave with a phase opposite to the noise to offset the noise, thereby eliminating noise interference near the ear canal, allowing the target sound output by the speaker 20 to be transmitted to the user's ear canal more purely, which is conducive to improving the clarity of the sound quality.

[0035] In one embodiment of the present application, the feedback microphone 30 is disposed in the groove 14 .

[0036] Optionally, the feedback microphone 30 is rectangular, the shape of the groove 14 is adapted to the feedback microphone 30, and the feedback microphone 30 is interference fit with the groove 14. Of course, the feedback microphone 30 can also be cylindrical or other shapes, which can be selected according to actual needs.

[0037] Furthermore, the feedback microphone 30 may be fixed in the groove 14 by bonding or other methods.

[0038] In one embodiment of the present application, see Figure 2 and Figure 3A protrusion 16 is provided on the inner surface 115 of the dome 11 facing the front cavity 12 . The protrusion 16 extends from the center of the dome 11 to the edge of the dome 11 along the length direction F1 of the shell 10 . The groove 14 is opened on the protrusion 16 , and the channel 15 passes through the protrusion 16 .

[0039] Generally, the thickness of the dome 11 is relatively thin, and thus a protrusion 16 is provided on the inner surface 115, and the groove 14 is opened on the protrusion 16, so that the depth of the groove 14 can be ensured, which is beneficial to improving the stability of the feedback microphone 30 arranged in the groove 14 and preventing the feedback microphone 30 from falling off. By passing the channel 15 through the protrusion 16, the size of the channel 15 can meet the requirements, so that the sound in the ear canal can smoothly pass through the channel 15 and be transmitted to the first pickup hole 31 of the feedback microphone 30.

[0040] Optionally, the raised portion 16 is integrally formed with the dome 11. By integrally forming the raised portion 16 with the dome 11, the process is simple and the production cost is low.

[0041] In one embodiment of the present application, the shell 10 includes a first shell 17 and a second shell 18. The first shell 17 and the second shell 18 are connected to form a storage space. The speaker 20 is arranged in the storage space. The dome 11 is part of the first shell 17 and protrudes in a convex arc shape in a direction away from the second shell 18.

[0042] Specifically, the edge of the first housing 17 is buckled with the edge of the second housing 18, and the first housing 17 and the second housing 18 are connected by screws.

[0043] In one embodiment of the present application, the shell 10 is further provided with a first through hole, which is arranged on the peripheral side of the shell 10 or on the side of the shell 10 away from the dome 11. The open earphone also includes a feedforward microphone arranged in the shell 10, and the feedforward microphone is provided with a second sound pickup hole, which is correspondingly connected to the first through hole.

[0044] The feedforward microphone is used to pick up external environmental noise. Specifically, the feedforward microphone is electrically connected to the circuit board 40. The feedforward microphone picks up environmental noise outside the housing 10 through the second sound pickup hole and the second through hole, and feeds back the environmental noise signal to the circuit board 40. After the circuit board 40 analyzes and processes the environmental noise, it generates a sound wave with a phase opposite to the environmental noise to offset the environmental noise. It can be understood that active noise reduction through the cooperation of the feedforward microphone and the feedback microphone 30 is conducive to improving the noise reduction effect.

[0045] In one embodiment of the present application, the shell 10 is also provided with a second through hole, which is arranged at the bottom of the shell 10. The open earphone also includes a call microphone arranged in the shell 10, and the call microphone is provided with a third sound pickup hole, which is correspondingly connected to the second through hole.

[0046] When the earphone is worn on the user's ear, the second through hole is located at the bottom of the housing 10 and close to the user's mouth, and the call microphone picks up the user's voice signal through the third sound pickup hole and the second through hole.

[0047] In one embodiment of the present application, the open-type earphone further includes an ear hook 50, one end of which is connected to the housing 10, and the ear hook 50 is a flexible curved structure. When worn, the ear hook 50 is hung on the ear of the user. It can be understood that the open-type earphone is an ear hook 50-type earphone.

[0048] In addition, the ear hook 50 is a hollow structure, and the internal space of the ear hook 50 is connected to the storage space of the shell 10. Components, such as batteries, can be installed in the ear hook 50 to make rational use of the space of the ear hook 50, which is beneficial to reducing the volume of the shell 10.

[0049] Furthermore, the open earphone further includes a rotating assembly 60 , and one end of the ear hook 50 is rotatably connected to the housing 10 via the rotating assembly 60 .

[0050] One end of the ear hook 50 is connected to the housing 10 via a rotating assembly 60 , and the rotating assembly 60 can drive the housing 10 to rotate relative to the ear hook 50 to adjust the comfort of the user when wearing it.

[0051] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An open-type headphone, characterized in that: The invention comprises a shell, a speaker and a feedback microphone, wherein the shell is formed with a dome, the speaker is arranged in the shell and cooperates with the dome to form a front cavity; the dome has a lower half area, the dome is provided with a sound outlet, a groove and a channel, the sound outlet is arranged in the lower half area and communicates with the front cavity, the groove is arranged at the center of the dome and communicates with the front cavity, the channel extends from the center of the dome to the edge of the lower half area along the length direction of the shell, one end of the channel is communicated with the groove, and the other end of the channel passes through the outer surface of the dome away from the front cavity to form a guide port; The feedback microphone is arranged in the groove, and the feedback microphone is provided with a first sound pickup hole, and the first sound pickup hole is correspondingly communicated with the channel.

2. The open earphone according to claim 1, characterized in that: The inner surface of the dome facing the front cavity is provided with a protrusion, which extends from the center of the dome to the edge of the dome along the length direction of the shell, the groove is opened on the protrusion, and the channel passes through the protrusion.

3. The open earphone according to claim 2, characterized in that: The raised portion is integrally formed with the dome.

4. The open earphone according to claim 1, characterized in that: The feedback microphone is disposed in the groove.

5. The open earphone according to claim 4, characterized in that: The feedback microphone is rectangular in shape, and the shape of the groove is adapted to the feedback microphone.

6. The open earphone according to any one of claims 1 to 5, characterized in that: The shell comprises a first shell and a second shell, the first shell and the second shell are connected to form a storage space, the speaker is arranged in the storage space, the dome is a part of the first shell, and protrudes in a convex arc shape in a direction away from the second shell.

7. The open earphone according to any one of claims 1 to 5, characterized in that: The shell is also provided with a first through hole, which is provided on the peripheral side of the shell or on the side of the shell away from the dome. The open earphone also includes a feedforward microphone arranged in the shell, and the feedforward microphone is provided with a second sound pickup hole, which is correspondingly connected to the first through hole.

8. The open earphone according to any one of claims 1 to 5, characterized in that: The shell is also provided with a second through hole, which is arranged at the bottom of the shell. The open earphone also includes a call microphone arranged in the shell, and the call microphone is provided with a third sound pickup hole, which is correspondingly connected to the second through hole.

9. The open earphone according to any one of claims 1 to 5, characterized in that: The open earphone also includes an ear hook, one end of which is connected to the housing.

10. The open earphone according to claim 9, characterized in that: The open earphone also includes a rotating assembly, and one end of the ear hook is rotatably connected to the shell through the rotating assembly.

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