Open type Bluetooth earphone
By combining dynamic and balanced armature drivers, the design solves the problems of sound leakage and low-frequency sound inaudibility in open-back Bluetooth headphones, achieving clear bass, high-fidelity treble, and reduced sound leakage.
Patent Information
- Application Number
- CN202423202161.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing open-back Bluetooth headphones are loud and prone to sound leakage when not inserted into the ear, especially low-frequency sounds are difficult to hear, and the sound leakage is more serious when the volume is turned up.
It adopts a combination design of dynamic and balanced armature horns. The dynamic horn is used to output low frequencies, while the balanced armature horn is used to output mid and high frequencies. The sound is emitted through the sound outlet of the same mesh plate, and the sound leakage is reduced by silicone seals and connecting post structure.
It achieves clear bass, high-fidelity treble, and reduced sound leakage. The combination design of dynamic and balanced armature speakers saves structural space. The dynamic speaker is close to the sound outlet to enhance the bass effect, while the balanced armature speaker is far away from the sound outlet to preserve high-fidelity treble. Silicone seals reduce sound leakage.
Smart Images
Figure CN223584328U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an earphone, in particular to an open type Bluetooth earphone. BACKGROUND
[0002] The open type Bluetooth earphone in the market currently adopts a moving coil loudspeaker to output sound, and when the moving coil loudspeaker outputs sound, in the case that the earphone is not inserted into the ear, the sound is loud, and leakage of sound is prone to occur, so that the person's ear feels less low frequency, and it is particularly difficult to hear the sound of drum, and when the volume is increased, leakage of sound is also prone to occur.
[0003] Therefore, in order to solve the problems of the existing open type Bluetooth earphone, it is necessary to develop a new open type Bluetooth earphone. CONTENT OF THE UTILITY MODEL
[0004] The utility model aims at providing an open type Bluetooth earphone to solve the problems of the existing open type Bluetooth earphone.
[0005] According to one aspect of the utility model, an open type Bluetooth earphone is provided, which comprises an upper shell and a lower shell, the upper shell is connected with the lower shell, the upper shell itself forms an upper cavity, the lower shell is provided with a moving coil loudspeaker and a moving iron loudspeaker, a first mesh plate is arranged on the side wall of the lower shell, an acoustic outlet is arranged on the first mesh plate, the acoustic outlet is connected with a lower cavity of the lower shell in communication, the sound emitted by the diaphragm of the moving coil loudspeaker is emitted through the acoustic outlet, the sound emitted by the vibrating sheet of the moving iron loudspeaker is also emitted through the acoustic outlet, and the first mesh plate is arranged at the front end of the lower shell, the distance between the moving coil loudspeaker and the first mesh plate is less than the distance between the moving iron loudspeaker and the first mesh plate.
[0006] In some embodiments, a silica gel sealing piece is further arranged on the lower shell, the silica gel sealing piece can seal the connection between the moving coil loudspeaker and the lower shell, so that the sound emitted by the moving coil loudspeaker cannot enter the upper cavity of the upper shell, the moving iron loudspeaker is arranged in the silica gel sealing piece, and a first communication hole is arranged on the silica gel sealing piece, the first communication hole is connected with the acoustic outlet in communication through the lower cavity, and the sound emitted by the moving iron loudspeaker is emitted through the first communication hole to the acoustic outlet.
[0007] In some embodiments, a plurality of connecting columns are arranged on the lower shell, the plurality of connecting columns are arranged in a ring shape in sequence, a first step is arranged on the outermost connecting column, the lower end surface of the moving coil loudspeaker is arranged on the first step, and the diaphragm is arranged downward, a second communication hole is arranged on each of the plurality of connecting columns, the sound emitted by the diaphragm enters the lower cavity through the second communication hole and is emitted through the acoustic outlet.
[0008] In some embodiments, one side of the silica gel sealing piece is arc-shaped, the one side of the silica gel sealing piece is matched with the outermost connecting column, the moving-iron loudspeaker is arranged in the silica gel sealing piece, the first communication hole is arranged on the side surface of the silica gel sealing piece, and the first communication hole is communicated with the second communication hole through the lower cavity.
[0009] In some embodiments, a through hole is arranged on the lower end surface of the moving-iron loudspeaker, the through hole is communicated with the first communication hole, the vibrating reed is arranged in the moving-iron loudspeaker, and the sound emitted by the vibrating reed is conducted to the first communication hole through the through hole.
[0010] In some embodiments, a second step is formed on the upper end surface of the lower shell, and the lower end surface of the upper shell is matched with the second step.
[0011] In some embodiments, a second mesh plate is arranged on the upper shell, a sound leakage hole is arranged on the second mesh plate, and the sound leakage hole is communicated with the upper cavity of the upper shell.
[0012] In some embodiments, the whole composed of the upper shell and the lower shell is matched with the ear canal of the human body.
[0013] The moving-iron loudspeaker and the moving-coil loudspeaker are combined together for use, the moving-coil loudspeaker can be preset to output low-frequency sound, the medium and high frequency sound is output through the moving-iron loudspeaker, the sound emitted by the moving-coil loudspeaker and the moving-iron loudspeaker is emitted through the sound outlet hole of the same mesh plate, and the structural space of the earphone can be reduced.
[0014] In addition, the moving-coil loudspeaker emits sound which is conducted to the sound outlet hole through the first communication hole and the lower cavity, the moving-coil loudspeaker is closer to the sound outlet hole, the produced low-frequency sound is obvious, the medium and high frequency sound emitted by the moving-iron loudspeaker is conducted to the first communication hole and the second communication hole through the through hole, and is finally emitted through the sound outlet hole, the moving-iron loudspeaker is relatively far away from the sound outlet hole, the high-frequency sound is more faithful, the produced high-frequency sound is not harsh, and the sound leakage can be reduced through the silica gel sealing piece. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structural schematic view of an open type Bluetooth earphone according to an embodiment of the utility model;
[0016] Figure 2 It is Figure 1 It is a structural schematic view of the open type Bluetooth earphone after hiding the upper shell;
[0017] Figure 3 It is Figure 2 It is an exploded view;
[0018] Figure 4 It is Figure 1 It is a partial structural schematic view of the open type Bluetooth earphone;
[0019] Figure 5 For Figure 1 Another part structure diagram of the open Bluetooth earphone.
[0020] In the figure, 1 - upper shell; 11 - second mesh plate; 2 - lower shell; 21 - first mesh plate; 22 - connecting column; 221 - first step; 222 - second communication hole; 24 - second step; 3 - moving coil loudspeaker; 31 - diaphragm; 4 - moving iron loudspeaker; 41 - through hole; 5 - silica gel sealing element; 51 - first communication hole. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments, and is not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0023] Figures 1-5 The structure of the open Bluetooth earphone is schematically shown.
[0024] As Figures 1-5 An open Bluetooth earphone, comprising an upper shell 1 and a lower shell 2.
[0025] As shown in Figure 1, in this embodiment, the upper shell 1 is connected to the lower shell 2. The upper shell 1 itself forms an upper cavity. The lower shell 2 can be equipped with a moving coil horn 3 and a moving iron horn 4. The lower shell 2 can also form a lower cavity. The upper cavity and the lower cavity are not interconnected, that is, the sound from the lower cavity will not be transmitted to the upper cavity through the air. A first mesh plate 21 is also installed on the side wall of the lower shell 2. The first mesh plate 21 can be integrally formed with a sound outlet. The moving coil horn 3 and the moving iron horn 4 cover the lower cavity, so that the sound emitted by the diaphragm 31 of the moving coil horn 3 can be transmitted to the sound outlet through the lower cavity and the sound emitted by the vibrating plate of the moving iron horn 4 can also be transmitted to the sound outlet through the lower cavity. Specifically, the first mesh plate 21 can be installed at the front end of the side wall of the lower shell 2. The distance between the moving coil horn 3 and the first mesh plate 21 is less than the distance between the moving iron horn 4 and the first mesh plate 21. Therefore, compared with the moving iron horn 4, the moving coil horn 3 is closer to the first mesh plate 21.
[0026] In this embodiment, the sounds emitted by the moving coil speaker 3 and the moving iron speaker 4 can both be emitted through the sound outlet on the first mesh plate 21, which can save overall installation space.
[0027] like Figures 2-5 As shown, this utility model also includes a silicone seal 5, which is installed on the lower housing 2. The silicone seal 5 can seal the connection between the moving coil speaker 3 and the lower housing 2. The sound emitted by the diaphragm 31 of the moving coil speaker 3 is blocked by the silicone seal 5 and the connecting post 22, so the sound emitted by the moving coil speaker 3 will not enter the upper cavity of the upper housing 1. The moving iron speaker 4 can be installed in the silicone seal 5, and there is a first connecting hole 51 on the left side of the silicone seal 5. The first connecting hole 51 is connected to the sound outlet through the lower cavity. The sound emitted by the moving iron speaker 4 is conducted to the sound outlet through the first connecting hole 51 and the lower cavity. The silicone seal 5 can seal the moving coil speaker 3 and the moving iron speaker 4, so that the sound emitted by the moving coil speaker 3 and the moving iron speaker 4 can only be conducted to the lower cavity formed by the lower housing 2 and finally emitted from the sound outlet.
[0028] like Figure 2 and Figure 3As shown, three connecting posts 22 are integrally formed on the lower housing 2. The cross-section of the three connecting posts 22 is annular, and the three connecting posts 22 are distributed in a ring-like manner. The outermost (i.e., the rightmost) connecting post 22 has a first step 221 integrally formed on it. The lower end face of the moving coil speaker 3 can be fixedly installed on the first step 221. The diaphragm 31 is set downward. Each of the three connecting posts 22 has a second connecting hole 222 integrally formed on it. The sound emitted by the diaphragm 31 enters the lower cavity through the second connecting hole 222 and is emitted through the sound outlet. The moving coil speaker 3 cooperates with the rightmost connecting post 22. Therefore, the space formed by the connecting post 22 and the lower housing 2 (i.e., part of the lower cavity) is sealed. The silicone sealant 5 can seal the lower cavity of the lower housing 2 and the second connecting hole 222. The connecting post 22 can serve to support the moving coil speaker 3.
[0029] In this embodiment, as Figure 2 and Figure 3 As shown, the left side of the silicone seal 5 is arc-shaped. Therefore, the left side of the silicone seal 5 matches the rightmost connecting post 22, and the moving iron horn 4 can be installed in the silicone seal 5. The first connecting hole 51 is integrally formed on the side of the silicone seal 5, and the first connecting hole 51 is connected to the second connecting hole 222.
[0030] like Figure 5 As shown, a through hole 41 is formed on the lower end face of the moving iron horn 4 (of course, the through hole 41 of the moving iron horn 4 can also face to the left, so that the through hole 41 is facing the first connecting hole 51). The through hole 41 is connected to the first connecting hole 51, and the vibrating plate can be installed in the moving iron horn 4 (since the vibrating plate is blocked by the outer shell of the moving iron horn 4, the vibrating plate is not in the...). Figure 5 (As shown in the image), the sound emitted by the vibrating plate is transmitted through the through hole 41 to the first connecting hole 51, and finally emitted through the sound outlet hole via the second connecting hole 222 and the lower cavity.
[0031] like Figure 1 and Figure 2 As shown, a second step 24 is formed on the upper end surface of the lower housing 2, and the lower end surface of the upper housing 1 mates with the second step 24. The second step 24 serves a positioning function and allows the upper housing 1 and the lower housing 2 to be installed together.
[0032] like Figure 1 As shown, a second mesh plate 11 can be installed on the upper housing 1. The second mesh plate 11 has sound venting holes formed on it, and the sound venting holes are connected to the upper cavity of the upper housing 1. The sound venting holes can balance the air pressure inside the upper housing 1 with the outside, preventing changes in air pressure inside the upper housing 1 due to the vibration of the moving coil horn and the moving iron horn 4.
[0033] In the embodiment, the whole of the upper housing 1 and the lower housing 2 is fitted to the ear canal of the human body. Therefore, the whole of the upper housing 1 and the lower housing 2 can be worn in the ear canal of the human body.
[0034] The loudspeaker 4 and the loudspeaker 3 are combined for use, the loudspeaker 3 is preset to output bass, and the loudspeaker 4 outputs medium and high frequencies, the sound emitted by the loudspeaker 3 and the loudspeaker 4 is emitted through the sound hole on the same mesh plate, and the structure space of the earphone can be reduced.
[0035] In addition, the loudspeaker 3 emits sound conducted to the sound hole through the first communication hole and the lower cavity, the loudspeaker 3 is closer to the sound hole, the generated bass is obvious, the loudspeaker 4 emits medium and high frequencies, the medium and high frequencies are conducted to the first communication hole and the second communication hole through the through hole, and finally emitted by the sound hole, the loudspeaker 4 is relatively far from the sound hole, the high frequency is more faithful, the generated high frequency is not harsh, and the sound leakage is reduced through the silica gel sealing element.
[0036] In the embodiment, the bass frequency range is preset to 20Hz-160Hz, the medium frequency range is preset to 160Hz-2500Hz, and the high frequency range is preset to 2500Hz-20000Hz. In other embodiments, the bass frequency range, the medium frequency range and the high frequency range can be adjusted according to actual conditions.
[0037] The utility model is not limited to the above optional implementation, anyone under the inspiration of the utility model can derive other various forms of products, but no matter make any change in its shape or structure, any technical scheme falling into the scope defined by the utility model claims falls into the protection scope of the utility model.
Claims
1. An open-back Bluetooth headset, characterized in that: The device includes an upper shell (1) and a lower shell (2), the upper shell (1) being connected to the lower shell (2). The upper shell (1) itself forms an upper cavity. The lower shell (2) is provided with a moving coil horn (3) and a moving iron horn (4). The side wall of the lower shell (2) is provided with a first mesh plate (21), and the first mesh plate (21) is provided with a sound outlet. The sound outlet is connected to the lower cavity of the lower shell (2). The sound emitted by the diaphragm (31) of the moving coil horn (3) is emitted through the sound outlet, and the sound emitted by the vibrating plate of the moving iron horn (4) is also emitted through the sound outlet. The first mesh plate (21) is located at the front end of the lower shell (2), and the distance between the moving coil horn (3) and the first mesh plate (21) is less than the distance between the moving iron horn (4) and the first mesh plate (21).
2. The open-back Bluetooth headset according to claim 1, characterized in that: It also includes a silicone seal (5), which is disposed on the lower housing (2). The silicone seal (5) can seal the connection between the moving coil horn (3) and the lower housing (2) so that the sound emitted by the moving coil horn (3) will not enter the upper cavity of the upper housing (1). The moving iron horn (4) is disposed in the silicone seal (5). The silicone seal (5) is provided with a first connecting hole (51). The first connecting hole (51) is connected to the sound outlet through the lower cavity. The sound emitted by the moving iron horn (4) is emitted through the first connecting hole (51) to the sound outlet.
3. The open-back Bluetooth headset according to claim 2, characterized in that: The lower housing (2) is provided with multiple connecting posts (22), which are arranged in a ring. The outermost connecting post (22) is provided with a first step (221). The lower end face of the moving coil horn (3) is located on the first step (221). The diaphragm (31) is set downward. Each of the multiple connecting posts (22) has a second connecting hole (222). The sound emitted by the diaphragm (31) enters the lower cavity through the second connecting hole (222) and is emitted through the sound outlet.
4. The open-back Bluetooth headset according to claim 3, characterized in that: One side of the silicone seal (5) is arc-shaped, and one side of the silicone seal (5) is matched with the outermost connecting post (22). The first connecting hole (51) is provided on the side of the silicone seal (5), and the first connecting hole (51) is connected to the second connecting hole (222) through the lower cavity.
5. The open-back Bluetooth headset according to claim 4, characterized in that: The moving iron horn (4) A through hole (41) is provided on the lower end face. The through hole (41) is connected to the first connecting hole (51). The vibrating plate is provided in the moving iron horn (4). The sound emitted by the vibrating plate is transmitted to the first connecting hole (51) through the through hole (41).
6. The open-back Bluetooth headset according to any one of claims 1 to 5, characterized in that: A second step (24) is formed on the upper end surface of the lower shell (2), and the lower end surface of the upper shell (1) is matched with the second step (24).
7. The open-back Bluetooth headset according to claim 6, characterized in that: The upper shell (1) is provided with a second mesh plate (11), and the second mesh plate (11) is provided with a sound leakage hole, which is connected to the upper cavity of the upper shell (1).
8. The open-back Bluetooth headset according to claim 7, characterized in that: The upper shell (1) and the lower shell (2) together fit into the human ear canal.