Half-cavity loudspeaker module

Abstract

The utility model discloses a semi-cavity type loudspeaker module, which comprises a module shell, a loudspeaker monomer, sound absorption particles, a hot melting net and a net cover, and is characterized in that the module shell is provided with an opening, an inner cavity and a sound outlet which are communicated in sequence; the loudspeaker single body is installed in the inner cavity and divides the inner cavity into a front cavity and a rear cavity, the front cavity is communicated with the sound outlet, and the rear cavity is communicated with the opening; the sound-absorbing particles are filled in the rear cavity; the hot melting net is fixedly connected with the module shell and seals the opening so as to prevent the sound absorption particles from being separated from the rear cavity; the mesh enclosure covers the loudspeaker single body so as to prevent the sound-absorbing particles from entering the loudspeaker single body. According to the semi-cavity type loudspeaker module, the rear cavity can accommodate the sound absorption particles by using the breathable mesh enclosure and the hot melting mesh, so that the capacity of the rear cavity is expanded, and the problem of insufficient volume of the rear cavity of the semi-cavity type loudspeaker module in the industry is solved; and the thickness of the hot melting net is relatively thin, so that the semi-cavity type loudspeaker module can be kept light and thin.

Description

TECHNICAL FIELD

[0001] The utility model relates to electroacoustic transducer technical field especially relates to a half cavity formula loudspeaker module. BACKGROUND

[0002] In order to make the acoustic effect of loudspeaker module better, the industry will usually choose to increase the object (such as sound absorbing particles) that can expand the virtual volume of sound cavity in the back cavity of loudspeaker module to obtain better low frequency experience.

[0003] Unlike the closed loudspeaker module, the back cavity of the half cavity loudspeaker module is open, which needs to be enclosed with other structural parts of the device to form a closed back cavity, and the back cavity of the half cavity loudspeaker module is generally narrow and cannot form a good sealed cavity to fill sound absorbing particles. Therefore, how to expand the back cavity of the half cavity loudspeaker module is a difficulty in the industry. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide a half cavity loudspeaker module with good low frequency effect.

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme of a half cavity loudspeaker module, which comprises:

[0006] A module shell has an open port, an inner cavity and a sound outlet in sequence;

[0007] A loudspeaker unit is installed in the inner cavity and divides the inner cavity into a front cavity and a back cavity, the front cavity is connected to the sound outlet, and the back cavity is connected to the open port;

[0008] Sound absorbing particles are filled in the back cavity;

[0009] A hot melt net is fixedly connected with the module shell and closes the open port to prevent the sound absorbing particles from separating from the back cavity;

[0010] A mesh cover covers the loudspeaker unit to prevent the sound absorbing particles from entering the interior of the loudspeaker unit.

[0011] Further, the hot melt net is hot melt connected with the module shell.

[0012] Further, the module shell has opposite top and bottom surfaces, the open port is located at the bottom surface of the module shell, and the hot melt net is connected to the bottom surface of the module shell.

[0013] Further, the bottom of the module shell has an extension step, and at least part of the bottom surface of the extension step is fixedly connected with the hot melt net.

[0014] Further, the mesh cover is in contact with the hot melt mesh surface.

[0015] Further, the mesh cover comprises a bottom wall and a surrounding wall arranged along the edge of the bottom wall, and the bottom wall is in contact with the hot melt mesh surface.

[0016] Further, the module shell is provided with a filling hole communicating with the rear cavity, and a partition sheet for closing the filling hole is arranged at the filling hole.

[0017] Further, the partition sheet is a PET sheet.

[0018] The beneficial effects of the utility model lie in that the half-cavity loudspeaker module utilizes the breathable mesh cover and the hot melt mesh to enable the rear cavity to accommodate sound-absorbing particles, so that the rear cavity is expanded, and the problem of insufficient volume of the rear cavity of the half-cavity loudspeaker module in the industry is solved; before the half-cavity loudspeaker module is assembled to the electronic equipment, the sound-absorbing particles will not accidentally separate from the rear cavity or invade the inside of the loudspeaker monomer, and the hot melt mesh itself is relatively thin, so that the half-cavity loudspeaker module can remain light and thin. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a sectional view of the half-cavity loudspeaker module;

[0020] Figure 2 It is an exploded view of the half-cavity loudspeaker module.

[0021] Label explanation:

[0022] 1, module shell; 11, open port; 12, inner cavity; 121, front cavity; 122, rear cavity; 13, sound outlet; 14, outer extension step; 15, filling hole;

[0023] 2, loudspeaker monomer;

[0024] 3, hot melt mesh;

[0025] 4, mesh cover; 41, bottom wall; 42, surrounding wall;

[0026] 5, partition sheet. DETAILED DESCRIPTION

[0027] In order to explain the technical content, the purpose and the effect of the utility model in detail, the following will be explained in combination with the embodiments and the drawings.

[0028] Please refer to Figure 1 and Figure 2 A half-cavity loudspeaker module, comprising:

[0029] Module shell 1, the module shell 1 has open port 11, inner cavity 12 and sound outlet 13 in turn;

[0030] A speaker unit 2 is installed in the inner cavity 12 and divides the inner cavity 12 into a front cavity 121 and a rear cavity 122, the front cavity 121 is communicated with the sound outlet 13, and the rear cavity 122 is communicated with the open port 11;

[0031] Sound-absorbing particles are filled in the rear cavity 122;

[0032] A hot melt net 3 is fixedly connected with the module shell 1 and seals the open port 11 to prevent the sound-absorbing particles from escaping from the rear cavity 122;

[0033] A mesh cover 4 covers the speaker unit 2 to prevent the sound-absorbing particles from entering the inside of the speaker unit 2.

[0034] From the above description, the beneficial effects of the utility model are that: the half-cavity type speaker module utilizes the mesh cover 4 and the hot melt net 3 to make the rear cavity 122 accommodate the sound-absorbing particles, so that the rear cavity 122 is expanded, and the problem of insufficient volume of the rear cavity 122 of the half-cavity type speaker module in the industry is solved; before the half-cavity type speaker module is assembled to the electronic equipment, the sound-absorbing particles will not accidentally escape from the rear cavity 122 or invade the inside of the speaker unit 2, and the hot melt net 3 itself is relatively thin, so that the half-cavity type speaker module can remain light and thin.

[0035] Further, the hot melt net 3 is hot melt connected with the module shell 1.

[0036] Further, the module shell 1 has opposite top and bottom surfaces, the open port 11 is located at the bottom surface of the module shell 1, and the hot melt net 3 is connected to the bottom surface of the module shell 1.

[0037] From the above description, the hot melt net 3 and the module shell 1 are connected in a simple manner, which facilitates the processing and manufacturing of the half-cavity type speaker module.

[0038] Further, the bottom of the module shell 1 has an extension step 14, and at least part of the bottom surface of the extension step 14 is fixedly connected with the hot melt net 3.

[0039] From the above description, the extension step 14 can not only improve the structural strength of the module shell 1 itself, but also increase the bonding area of the hot melt net 3 and the module shell 1, which is beneficial to improve the structural stability of the half-cavity type speaker module.

[0040] Further, the mesh cover 4 is in surface contact with the hot melt net 3.

[0041] From the above description, the half-cavity type speaker module is relatively thin, and is particularly suitable for use in light and thin electronic equipment.

[0042] Further, the mesh cover 4 comprises a bottom wall 41 and a surrounding wall 42 arranged along the edge of the bottom wall 41, and the bottom wall 41 is in surface contact with the hot melt mesh 3.

[0043] Further, the module shell 1 is provided with a filling hole 15 communicating with the rear cavity 122, and the filling hole 15 is provided with a partition sheet 5 for closing the filling hole 15.

[0044] As described above, the sound-absorbing particles can be filled into the rear cavity 122 through the filling hole 15.

[0045] Further, the partition sheet 5 is a PET sheet.

[0046] As described above, the partition sheet 5 is used to prevent the sound-absorbing particles from escaping from the rear cavity 122 through the filling hole 15.

[0047] Please refer to Figure 1 and Figure 2 Embodiment one of the utility model is: a half cavity type loudspeaker module, including module shell 1, loudspeaker single body 2, sound-absorbing particle, hot melt mesh 3 and mesh cover 4, module shell 1 has open mouth 11, inner cavity 12 and sound outlet 13 that communicate sequentially, wherein, open mouth 11 and sound outlet 13 communicate atmosphere outside respectively;Loudspeaker single body 2 is installed in inner cavity 12 and divides inner cavity 12 into front cavity 121 and rear cavity 122, front cavity 121 communicates sound outlet 13, rear cavity 122 communicates open mouth 11, sound-absorbing particle is filled in rear cavity 122;Hot melt mesh 3 is fixedly connected with module shell 1 and closes open mouth 11 to prevent sound-absorbing particle from separating from rear cavity 122 from open mouth 11;Mesh cover 4 covers loudspeaker single body 2 to prevent sound-absorbing particle from entering the inside of loudspeaker single body 2.

[0048] It is easy to understand that the aperture of the mesh cover 4 and the aperture of the hot melt mesh 3 are both smaller than the particle size of the sound-absorbing particles, so as to achieve the purpose of blocking the sound-absorbing particles.

[0049] The hot melt mesh 3 is hot melt connected with the module shell 1, specifically, the module shell 1 has opposite top surface and bottom surface, the open mouth 11 is located at the bottom surface of the module shell 1, the hot melt mesh 3 is connected with the bottom surface of the module shell 1, and the bottom surface of the module shell 1 can be a plane, an inclined surface, a stepped surface or the like.

[0050] Optionally, the bottom of the module shell 1 has an extension step 14, and at least part of the bottom surface of the extension step 14 is fixedly connected with the hot melt mesh 3.

[0051] Optionally, the mesh cover 4 is bonded and fixed with the hot melt mesh 3, so that the hot melt mesh 3 can be more effectively fixed, which is beneficial to reduce the risk of the hot melt mesh 3 being separated from the module shell 1, and more greatly improves the structural stability of the half-cavity loudspeaker module. Moreover, it can also avoid the sound-absorbing particles from entering the gap between the hot melt mesh 3 and the mesh cover 4, so that the process of installing the half-cavity loudspeaker module into the electronic equipment is not affected.

[0052] The mesh cover 4 comprises a bottom wall 41 and a surrounding wall 42 arranged along the edge of the bottom wall 41, and the surrounding wall 42 and the bottom wall 41 are an integrated structure processed and formed integrally, the bottom wall 41 is in surface contact with the hot melt mesh 3, and in a specific product, the bottom wall 41 and the hot melt mesh 3 can be bonded and fixed.

[0053] The module shell 1 is provided with a filling hole 15 communicating with the rear cavity 122, and a partition sheet 5 for closing the filling hole 15 is arranged at the filling hole 15. In the embodiment, the partition sheet 5 is a PET (polyethylene terephthalate) sheet.

[0054] In summary, the half-cavity loudspeaker module provided by the utility model utilizes the breathable mesh cover and the hot melt mesh to enable the rear cavity to accommodate sound-absorbing particles, so that the rear cavity is expanded, and the problem of insufficient volume of the rear cavity of the half-cavity loudspeaker module in the industry is solved. Before the half-cavity loudspeaker module is assembled into an electronic device, the sound-absorbing particles will not accidentally separate from the rear cavity or invade the inside of the loudspeaker monomer, and the hot melt mesh itself is relatively thin, so that the half-cavity loudspeaker module can remain light and thin.

[0055] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation or direct or indirect application in the related technical field according to the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A semi-cavity loudspeaker module, characterized in that, include The module housing has an open opening, an inner cavity, and a sound outlet connected in sequence. A loudspeaker unit, wherein the loudspeaker unit is installed in the inner cavity and the inner cavity is divided into a front cavity and a rear cavity, the front cavity is connected to the sound outlet, and the rear cavity is connected to the open outlet; Sound-absorbing particles, which are filled into the rear cavity; A hot melt mesh is fixedly connected to the module housing and closes the opening to prevent the sound-absorbing particles from detaching from the rear cavity; A mesh cover is provided to cover the speaker unit to prevent the sound-absorbing particles from entering the speaker unit.

2. The semi-cavity loudspeaker module according to claim 1, characterized in that, The hot melt mesh is hot melt connected to the module shell.

3. The semi-cavity loudspeaker module according to claim 2, characterized in that, The module housing has a top surface and a bottom surface, the opening is located on the bottom surface of the module housing, and the hot melt mesh is connected to the bottom surface of the module housing.

4. The semi-cavity loudspeaker module according to claim 3, characterized in that, The bottom of the module housing has an extended step, and at least a portion of the bottom surface of the extended step is fixedly connected to the hot melt mesh.

5. The semi-cavity loudspeaker module according to claim 1, characterized in that, The mesh cover is in contact with the hot melt mesh surface.

6. The semi-cavity loudspeaker module according to claim 5, characterized in that, The mesh cover includes a bottom wall and a surrounding wall provided along the edge of the bottom wall, the bottom wall being in contact with the hot melt mesh surface.

7. The semi-cavity loudspeaker module according to claim 1, characterized in that, The module housing is provided with a filling hole that communicates with the rear cavity, and a partition for sealing the filling hole is provided at the filling hole.

8. The semi-cavity loudspeaker module according to claim 7, characterized in that, The spacer is made of PET sheet.

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