A cavity loudspeaker with improved gas barrier balance

Abstract

The utility model discloses an improve cavity loudspeaker of air resistance balance, including casing, first cavity and second cavity, the casing is long strip, the casing is equipped with positioning cavity, positioning cavity is used for installing loudspeaker, first cavity is equipped with with positioning cavity peripheral wall intercommunication's first fluid channel, second cavity is equipped with with positioning cavity wall surface intercommunication's second fluid channel. Through first cavity and second cavity can effectively balance the pressure in positioning cavity, at the same time, adopt the first fluid channel and second fluid channel of staggered arrangement can effectively improve the overall pressure balance of positioning cavity, adopt the first fluid channel and second fluid channel of staggered arrangement mainly because when loudspeaker vibrates, in addition to the pressure difference change of positioning cavity inside, the pressure difference change will also be produced in the side close to the sound emitting surface, thereby realizes the stability when loudspeaker works in smaller space.

Description

Technical Field

[0001] This utility model relates to the field of loudspeakers, and in particular to a cavity loudspeaker with improved air resistance balance. Background Technology

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals, and its performance greatly affects sound quality. The loudspeaker is the weakest component in an audio system, yet it is also one of the most important components for achieving optimal sound effects. There are many types of loudspeakers, and their prices vary greatly. Audio electrical energy, through electromagnetic, piezoelectric, or electrostatic effects, causes the cone or diaphragm to vibrate and resonate with the surrounding air, thus producing sound.

[0003] For smart glasses, speaker integration is one of the key design considerations. Existing smart glasses speakers, such as Chinese patent 202222176020.7, use a single cavity to house the speaker. However, in actual testing, it was found that the air pressure and temperature inside the cavity are affected by the vibrating plate and the wearing experience, leading to an imbalance in air resistance and consequently affecting sound quality (such as frequency reduction caused by negative pressure). Utility Model Content

[0004] The main purpose of this invention is to propose a cavity speaker with improved air resistance balance, which aims to improve the existing speakers of smart glasses, ensuring air resistance balance and improving the sound quality of the speaker when installing it in a very small space.

[0005] To achieve the above objectives, this utility model proposes a cavity loudspeaker with improved air resistance balance, comprising:

[0006] The housing is elongated and has a positioning cavity for mounting a speaker;

[0007] A first cavity, wherein the first cavity is provided with a first fluid channel communicating with the peripheral wall of the positioning cavity;

[0008] The second cavity is provided with a second fluid channel that communicates with the wall of the positioning cavity.

[0009] In the actual design, the housing is modularized, the speaker is installed inside the housing, and then the housing is mounted on the eyeglass frame, thus achieving modular installation.

[0010] The positioning cavity can be formed into a relatively closed cavity by the eyeglass frame, or it can be formed into a relatively closed cavity by a plate in the housing (with a sound outlet). Therefore, when the speaker vibrates, the airflow resistance inside the positioning cavity will be generated due to the external temperature and the pressure difference caused by the vibration. Thus, the pressure inside the positioning cavity can be effectively balanced by the first and second cavities. At the same time, the staggered arrangement of the first and second fluid channels can effectively improve the overall pressure balance of the positioning cavity.

[0011] The first and second fluid channels are staggered because when the speaker vibrates, in addition to the pressure difference change inside the positioning cavity, a pressure difference change also occurs on the side near the sound outlet, thus achieving speaker stability within a smaller space.

[0012] This application mainly concerns the balanced cavity of a loudspeaker. Therefore, the design of its magnetic circuit components and vibration components can be adjusted according to actual needs. Of course, the bracket can also be a modular design for the balanced cavity, thus combining it with existing loudspeakers. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the present invention located in the first cavity;

[0015] Figure 3 This is a cross-sectional view of the present invention located in the second cavity;

[0016] Figure 4 This is a half-sectional view of the second cavity of this utility model;

[0017] Figure 5 This is a three-dimensional schematic diagram of the present invention;

[0018] In the picture,

[0019] 1 represents the outer shell, and 10 represents the positioning cavity.

[0020] 2 is the first cavity, 20 is the first fluid channel, and 21 is the notch.

[0021] 3 is the second cavity, 30 is the second fluid channel, 31 is the sound guide groove, and 32 is the through port.

[0022] 41 is the first sealing groove, and 42 is the second sealing groove.

[0023] Section 51 is the expanded diameter section, and section 52 is the reduced diameter section.

[0024] 6 represents a stepped groove, and 100 represents a loudspeaker. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0026] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0028] like Figures 1 to 5 As shown, a cavity loudspeaker with improved air resistance balance includes:

[0029] The housing 1 is elongated and has a positioning cavity 10 for mounting a speaker.

[0030] The first cavity 2 is provided with a first fluid channel 20 that communicates with the peripheral wall of the positioning cavity 10;

[0031] The second cavity 3 is provided with a second fluid channel 30 that communicates with the bottom or top surface (i.e., sealing surface) of the positioning cavity 10.

[0032] In the actual design, the housing 1 is modularized, and the speaker is installed inside the housing 1. The housing 1 is then installed on the eyeglass frame, thus achieving modular installation.

[0033] The positioning cavity 10 can be formed into a relatively closed cavity by the eyeglass frame, or it can be formed into a relatively closed cavity (with a sound outlet) by a plate in the housing 1. Therefore, when the speaker vibrates, the airflow resistance inside the positioning cavity 10 will be generated due to the external temperature and the pressure difference caused by the vibration. Thus, the pressure inside the positioning cavity 10 can be effectively balanced by the first cavity 2 and the second cavity 3. At the same time, the staggered arrangement of the first fluid channel 20 and the second fluid channel 30 can effectively improve the overall pressure balance of the positioning cavity 10.

[0034] The first fluid channel 20 and the second fluid channel 30 are staggered because when the speaker vibrates, in addition to the pressure difference change inside the positioning cavity 10, a pressure difference change also occurs on the side near the sound outlet surface, thus achieving speaker stability in a smaller space.

[0035] Specifically, the housing 1 is gradually tapered from one end to the other, forming an expanding section 51 and a tapering section 52.

[0036] The positioning cavity 10 is located in the expansion section, and the first cavity 2 and the second cavity 3 are located in the contraction section, achieving speaker balance in a smaller space. The other shell 1 has an overall teardrop-shaped structure, so in actual modular installation, the shell 1 can be easily installed in the mobile phone holder, while ensuring stable sound output from the speaker.

[0037] In this embodiment of the utility model, the first cavity 2 and the second cavity 3 are symmetrically arranged in the narrowing section 52, thereby ensuring that the flow pressure of the two cavities is consistent and avoiding errors caused by the inconsistency of the volumes of the two cavities.

[0038] Specifically, the top surface of the housing 1 is provided with a sealing surface, and the bottom wall of the first cavity 2 and the bottom wall of the second cavity 3 are inclined.

[0039] In this embodiment of the utility model, the top surface of the housing 1 is provided with a stepped groove 6, the second fluid channel 30 is provided in the stepped groove 6, and the side end of the stepped groove 6 is provided with a sound guide groove 31, which is connected to the sealing surface, thereby realizing the balance of internal pressure.

[0040] Specifically, the second fluid channel 30 includes a second horizontal groove communicating with the second cavity 3 and a second vertical hole disposed at the end of the second horizontal groove.

[0041] The other end of the second vertical hole is a guide port 32, which is located in the stepped groove 6. The first fluid channel 20 and the second fluid channel 30, which are set by bending, can not only ensure the balance of the internal pressure of the positioning cavity 10, but also avoid the cavity problem caused by the first cavity 2 and the second cavity 3 directly communicating with the positioning cavity 10, thus improving the sound quality and internal pressure balance of the speaker.

[0042] In this embodiment of the present invention, the first fluid channel 20 includes a first horizontal groove connected to the first cavity 2 and a first vertical hole provided at the end of the first horizontal groove. The side wall at the end of the first vertical hole is provided with a notch 21, which is connected to the positioning cavity 10, thereby achieving pressure balance in a small volume cavity.

[0043] Specifically, the notch 21 and the through port 32 are staggered to achieve internal pressure balance at different locations.

[0044] In this embodiment of the utility model, the first cavity 2 and the second cavity 3 are gradually tapered from the middle of the shell 1 toward the end, which can ensure a large inner cavity volume and avoid the cavity effect (which is prone to resonance) caused by excessive inner cavity length.

[0045] Specifically, the upper walls of the first cavity 2 and the second cavity 3 are respectively provided with a first sealing groove 41 and a second sealing groove 42, thereby ensuring the sealing performance of the first cavity 2 and the second cavity 3; thereby ensuring the balance of internal pressure.

[0046] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A vented box loudspeaker with improved air resistance balance, characterized by, include: The housing is elongated and has a positioning cavity for mounting a speaker; A first cavity, wherein the first cavity is provided with a first fluid channel communicating with the peripheral wall of the positioning cavity; The second cavity is provided with a second fluid channel that communicates with the bottom or top surface of the positioning cavity.

2. The vented box loudspeaker with improved air resistance balance of claim 1, wherein: The shell gradually narrows from one end to the other, forming an expanding section and a narrowing section. The positioning cavity is located in the expanded diameter section, and the first cavity and the second cavity are located in the reduced diameter section.

3. The vented box loudspeaker with improved air resistance balance of claim 2, wherein: The first cavity and the second cavity are symmetrically arranged in the narrowed section.

4. The vented box loudspeaker with improved air resistance balance of claim 1, wherein: The top surface of the housing is provided with a sealing surface, and the bottom walls of the first cavity and the second cavity are inclined.

5. The vented box loudspeaker to improve the air resistance balance according to claim 4, wherein: The top surface of the housing is provided with a stepped groove, the second fluid channel is provided in the stepped groove, and the side end of the stepped groove is provided with a sound guide groove, which is connected to the sealing surface.

6. The cavity loudspeaker with improved air resistance balance as described in claim 5, characterized in that: The second fluid channel includes a second horizontal groove connected to the second cavity and a second vertical hole located at the end of the second horizontal groove. The other end of the second vertical hole is a guide port located in the stepped groove.

7. The cavity loudspeaker with improved air resistance balance as described in claim 6, characterized in that: The first fluid channel includes a first horizontal groove communicating with the first cavity and a first vertical hole at the end of the first horizontal groove. The side wall at the end of the first vertical hole is provided with a notch, and the notch is communicating with the positioning cavity.

8. The cavity loudspeaker with improved air resistance balance as described in claim 7, characterized in that: The notch and the through port are misaligned.

9. The cavity loudspeaker with improved air resistance balance as described in claim 1, characterized in that: The first cavity and the second cavity are arranged with their diameters gradually decreasing from the middle of the shell towards the ends.

10. The cavity loudspeaker with improved air resistance balance as described in claim 1, characterized in that: The upper walls of the first cavity and the second cavity are respectively provided with a first sealing groove and a second sealing groove.

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