Half-cavity loudspeaker module

Abstract

The utility model discloses a half-cavity loudspeaker module, which comprises a module shell, a loudspeaker monomer, sound absorption particles, a breathable separator and a sealing spacer, and is characterized in that the module shell is provided with an opening, a mounting position and a sound outlet hole; the loudspeaker single body is installed at the installation position, the loudspeaker single body divides the internal space of the module shell into a front cavity and a rear cavity, and the front cavity is communicated with the sound outlet hole; the sound-absorbing particles are filled in the rear cavity; the breathable separator is arranged at the opening to prevent the sound-absorbing particles from escaping from the rear cavity through the opening; the sealing spacer is detachably installed on the module shell and seals the opening, and the sealing spacer is located on the side, away from the sound absorption particles, of the breathable spacer. The half-cavity loudspeaker module is filled with the sound absorption particles, the virtual rear cavity is enlarged, the acoustic performance is improved, the sealing spacer can play a role in isolating the outside atmosphere from the rear cavity, and the stability of the performance of the half-cavity loudspeaker module is guaranteed. The whole rear cavity of the half-cavity loudspeaker module is basically filled with the sound-absorbing particles, so that the acoustic performance is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a semi-cavity loudspeaker module. Background Art

[0002] The speaker module includes a module shell and a speaker unit arranged in the module shell. The speaker module is divided into a half-cavity and a full-cavity. The module back cavity in the full-cavity speaker module is a closed structure. Therefore, the module back cavity can be filled with sound-absorbing particles to increase the virtual back cavity of the speaker module and improve the performance of the speaker module. The module back cavity in the half-cavity speaker module is open, and it is impossible to design a structure for filling sound-absorbing particles. This is because during the transportation / storage of the half-cavity speaker module, the sound-absorbing particles are exposed to the air for a long time and will combine with water molecules in the air, resulting in poor sound absorption, smaller virtual back cavity, unstable performance, increased F0 and other problems. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a half-cavity speaker module which is filled with sound-absorbing particles and has stable performance.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a half-cavity speaker module, comprising:

[0005] A module housing, wherein the module housing has an opening, a mounting position and a sound outlet;

[0006] A speaker unit, the speaker unit is installed at the installation position, the speaker unit divides the internal space of the module housing into a front cavity and a rear cavity, and the front cavity is connected to the sound outlet hole;

[0007] Sound-absorbing particles, the sound-absorbing particles are filled in the rear cavity;

[0008] A breathable spacer, the breathable spacer is arranged at the opening to prevent the sound-absorbing particles from escaping from the rear cavity through the opening;

[0009] A sealing spacer is detachably mounted on the module housing and closes the opening, and is located on a side of the air-permeable spacer away from the sound-absorbing particles.

[0010] In one embodiment, the sealing spacer and the module housing are sealed using static electricity.

[0011] In one embodiment, the sealing spacer is sealed to the module housing via a sealing adhesive layer.

[0012] In one embodiment, the bonding force between the sealant layer and the sealing spacer is greater than the bonding force between the sealant layer and the module housing.

[0013] In one embodiment, the bonding force between the sealant layer and the sealing spacer is smaller than the bonding force between the sealant layer and the module housing.

[0014] In one embodiment, the sealing spacer is made of a transparent material.

[0015] In one embodiment, the breathable isolation element is a metal mesh or a mesh cloth.

[0016] In one embodiment, the sealing spacer has a protruding portion protruding relative to the outer peripheral wall of the module housing, and the protruding portion is an operating handle.

[0017] In one embodiment, a reinforcement sheet is provided on the protruding portion.

[0018] In one embodiment, a filling port communicating with the rear cavity is provided on the module housing, and a sealing mesh is provided at the filling port.

[0019] The beneficial effects of the utility model are as follows: the structure of the semi-cavity speaker module is novel, and it is filled with sound-absorbing particles, which can increase the virtual back cavity of the semi-cavity speaker module, which is beneficial to improving the acoustic performance of the semi-cavity speaker module, wherein the sealing spacer can isolate the outside atmosphere from the back cavity of the semi-cavity speaker module, thereby preventing the sound-absorbing particles from being contaminated by water vapor during the transportation and storage of the semi-cavity speaker module, which is beneficial to ensuring the stability of the performance of the semi-cavity speaker module. The entire back cavity of the semi-cavity speaker module can be basically filled with sound-absorbing particles, which can greatly improve the acoustic performance of the semi-cavity speaker module.

[0020] When the performance of the half-cavity speaker module needs to be tested, the staff can peel off the sealing spacer to carry out the operation. After the test is completed, the sealing spacer can be reconnected to the module housing without affecting the transportation and storage of the half-cavity speaker module. When the half-cavity speaker module needs to be assembled into an electronic device, the staff can peel off the sealing spacer to carry out the operation, which is very convenient. When the sound-absorbing particles are accidentally damp, the sealing spacer can be peeled off to bake the sound-absorbing particles, so that the water molecules evaporate and leave the sound-absorbing particles, thereby restoring the performance, and then the sealing spacer can be reconnected to the module housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1This is a schematic structural diagram of a half-cavity speaker module according to Embodiment 1 of the present utility model;

[0023] Figure 2 This is an exploded view of the half-cavity speaker module of the first embodiment of the present invention.

[0024] Description of Figure Numbers:

[0025] 1. Module housing; 11. Opening; 12. Sound outlet; 13. Back cavity;

[0026] 2. Speaker unit;

[0027] 3. Sound-absorbing particles;

[0028] 4. Breathable isolation parts;

[0029] 5. Sealing spacer; 51. Protrusion;

[0030] 6. Sealant layer;

[0031] 7. Strengthening film;

[0032] 8. Sealing mesh. DETAILED DESCRIPTION

[0033] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0037] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0038] 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. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] Embodiment 1

[0040] Please refer to Figure 1 and Figure 2 The first embodiment of the utility model is: a semi-cavity speaker module, comprising a module shell 1, a speaker unit 2, sound-absorbing particles 3, a breathable spacer 4 and a sealing spacer 5, the module shell 1 has an opening 11, a mounting position and a sound outlet 12, the speaker unit 2 is mounted at the mounting position, the speaker unit 2 divides the internal space of the module shell 1 into a front cavity and a rear cavity 13, the front cavity is connected to the sound outlet 12, the rear cavity 13 is connected to the opening 11, the sound-absorbing particles 3 are filled in In the rear cavity 13, the breathable spacer 4 is arranged at the opening 11 to prevent the sound-absorbing particles 3 from escaping from the rear cavity 13 through the opening 11. The sealing spacer 5 is detachably mounted on the module housing 1 and closes the opening 11. The sealing spacer 5 is located on the side of the breathable spacer 4 away from the sound-absorbing particles 3. When the sealing spacer 5 is removed, the sound-absorbing particles 3 will not escape from the rear cavity 13 due to the obstruction of the breathable spacer 4, which facilitates the testing and assembly of the half-cavity speaker module.

[0041] In one embodiment, the sealing spacer 5 and the module housing 1 are sealed by static electricity. In this embodiment, the sealing spacer 5 and the module housing 1 are sealed by a sealing glue layer 6. The bonding force between the sealing glue layer 6 and the sealing spacer 5 can be greater than the bonding force between the sealing glue layer 6 and the module housing 1, or less than the bonding force between the sealing glue layer 6 and the module housing 1. It is set according to actual needs. When the bonding force between the sealing glue layer 6 and the sealing spacer 5 is greater than the bonding force between the sealing glue layer 6 and the module housing 1, when the sealing spacer 5 is removed, the sealing glue layer 6 can be removed at the same time, thereby ensuring that the sealing glue layer 6 will not remain on the module housing 1 and affect the original assembly method between the semi-cavity speaker module and the external electronic device. When the bonding force between the sealant layer 6 and the sealing spacer 5 is smaller than the bonding force between the sealant layer 6 and the module housing 1, the sealant layer 6 can become a sealed connection structure between the semi-cavity speaker module and external electronic equipment, thereby allowing the sealant layer 6 to be reused, thereby helping to reduce resource waste.

[0042] In order to facilitate observation of the rear cavity 13 of the half-cavity speaker module, the sealing spacer 5 is preferably made of a transparent material, and the transparent material includes but is not limited to PET and the like.

[0043] In this embodiment, the air-permeable isolation member 4 is a metal mesh. In other embodiments, the air-permeable isolation member 4 may also be a mesh cloth or other structural members.

[0044] In order to facilitate the removal of the sealing spacer 5, the sealing spacer 5 preferably has a protruding portion 51 protruding relative to the outer peripheral wall of the module housing 1, and the protruding portion 51 is an operating handle, and the staff can use the operating handle to apply force to the sealing spacer 5 to remove the sealing spacer 5. It is further preferred that a reinforcing sheet 7 is provided on the protruding portion 51, and the reinforcing sheet 7 is used to strengthen the structural strength of the operating handle, reduce the probability of damage thereof, and at the same time, improve the operating feel. In an actual product, the reinforcing sheet 7 can be fixedly connected to the sealing spacer 5 by means of a sealant layer 6.

[0045] The module housing 1 is provided with a filling port connected to the rear cavity 13, and a sealing mesh cloth 8 is provided at the filling port. It is easy to understand that the sealing mesh cloth 8 is fixed to the module housing 1 after the sound-absorbing particles 3 are filled into the rear cavity 13 of the half-cavity speaker module.

[0046] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A half-cavity speaker module, characterized in that: include A module housing, wherein the module housing has an opening, a mounting position and a sound outlet; A speaker unit, the speaker unit is installed at the installation position, the speaker unit divides the internal space of the module housing into a front cavity and a rear cavity, and the front cavity is connected to the sound outlet hole; Sound-absorbing particles, the sound-absorbing particles are filled in the rear cavity; A breathable spacer, the breathable spacer is arranged at the opening to prevent the sound-absorbing particles from escaping from the rear cavity through the opening; A sealing spacer is detachably mounted on the module housing and closes the opening, and is located on a side of the air-permeable spacer away from the sound-absorbing particles.

2. The semi-cavity speaker module according to claim 1, characterized in that: The sealing spacer and the module housing are sealed by static electricity.

3. The semi-cavity speaker module according to claim 1, characterized in that: The sealing spacer is sealed and connected to the module housing via a sealing adhesive layer.

4. The semi-cavity speaker module according to claim 3, characterized in that: The bonding force between the sealant layer and the sealing spacer is greater than the bonding force between the sealant layer and the module housing.

5. The semi-cavity speaker module according to claim 3, characterized in that: The bonding force between the sealant layer and the sealing spacer is smaller than the bonding force between the sealant layer and the module housing.

6. The semi-cavity speaker module according to claim 1, characterized in that: The sealing spacer is made of transparent material.

7. The semi-cavity speaker module according to claim 1, characterized in that: The air-permeable isolation piece is a metal mesh or mesh cloth.

8. The semi-cavity speaker module according to claim 1, characterized in that: The sealing spacer has a protruding portion protruding relative to the outer peripheral wall of the module housing, and the protruding portion is an operating handle.

9. The semi-cavity speaker module according to claim 8, characterized in that: A reinforcement sheet is provided on the protruding portion.

10. The semi-cavity speaker module according to claim 1, characterized in that: The module housing is provided with a filling port connected to the rear cavity, and a sealing mesh is arranged at the filling port.

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