Loudspeaker module

Abstract

The utility model discloses a loudspeaker module which comprises a module shell, a sealing sheet and fixing glue, the outer surface of the module shell is provided with a mounting groove, the bottom surface of the mounting groove is provided with a pouring hole and a leakage groove, and one end of the leakage groove is communicated with the pouring hole; the sealing piece is adhered to the bottom surface of the mounting groove and shields at least partial area of the leakage groove and the pouring hole; and the fixing glue is connected with the edge of the sealing sheet and the module shell. The loudspeaker module is novel in structure, the leakage amount can be adjusted by changing the length of the sealing piece or the double-faced adhesive tape connecting the sealing piece and the module shell, the leakage amount can also be adjusted by changing the shape of the leakage groove, the sealing piece is made of a thick material and is not prone to being damaged by a tool of automation equipment to cause increase of the leakage amount, and therefore the loudspeaker module is convenient to use. The manufactured loudspeaker module is high in performance consistency and high in production yield, the first pass yield is improved, and the manufacturing cost is saved.

Description

Technical Field

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

[0002] As electronic products continue to be updated, the performance requirements of electronic products are getting higher and higher, and the size of electronic products is getting smaller and smaller. In order to improve the acoustic performance of the speaker module, more and more speaker modules will choose to inject sound-absorbing particles into the back cavity.

[0003] Traditional speaker modules are generally designed with a powder filling port and a leakage hole. The powder filling port is usually sealed with PET + double-sided tape, and the leakage hole is usually sealed with mesh + double-sided tape. During automatic attachment, the mesh is easily damaged by the tooling of the automated equipment, causing the leakage to increase. In addition, due to the instability of the machine, the size of the damage is not the same, and the leakage is difficult to unify. If the leakage is too large, it is easy to cause a large deviation in the amplitude of the speaker module, making the R&B and THD under the EQ voltage easily exceed the customer's frame line. Therefore, in the actual production process, defective products often need to be repaired. The one-time pass rate is low, and retesting and repairing them will undoubtedly increase costs. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a speaker module with low cost and high production yield.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a speaker module, comprising:

[0006] A module housing, wherein an installation groove is provided on the outer surface of the module housing, a filling hole and a leakage groove are provided on the bottom surface of the installation groove, and one end of the leakage groove is connected to the filling hole;

[0007] A sealing sheet, the sealing sheet being bonded to the bottom surface of the mounting groove, the sealing sheet shielding at least a portion of the leakage groove and the injection hole;

[0008] A fixing glue is used to connect the edge of the sealing sheet and the module housing.

[0009] In one embodiment, the leakage groove has at least one bending portion.

[0010] In one embodiment, the leakage groove is in a wavy line shape as a whole.

[0011] In one embodiment, a groove is provided on the outer surface of the module housing, and the other end of the leakage groove is connected to the groove.

[0012] In one embodiment, the sealing sheet is made of PET, PEN, PI or PEEK.

[0013] In one embodiment, the sealing sheet is bonded to the bottom surface of the mounting groove by double-sided adhesive.

[0014] In one embodiment, the module housing includes a plastic shell, and the mounting groove is disposed on the plastic shell.

[0015] In one embodiment, the module housing includes a metal plate and a plastic shell that are insert-injection molded into an integrated structure, and the mounting groove is disposed on the metal plate.

[0016] In one embodiment, it also includes a speaker unit and sound-absorbing particles. The speaker unit is installed in the module shell and divides the internal space of the module shell into a front cavity and a rear cavity. The infusion hole is connected to the rear cavity. The module shell is provided with a sound outlet hole connected to the front cavity. The sound-absorbing particles are filled in the rear cavity, and the particle size of the sound-absorbing particles is larger than the cross-sectional diameter size of the leakage groove.

[0017] In one embodiment, the edge of the opening of the mounting groove is chamfered.

[0018] The beneficial effects of the utility model are as follows: the speaker module has a novel structure, and the leakage can be adjusted by changing the length of the sealing sheet or the double-sided tape connecting the sealing sheet and the module housing, or by changing the shape of the leakage groove, thereby adjusting the amplitude symmetry of the speaker unit to improve the THD and R&B indicators. Because the sealing sheet is made of a thicker material, it is not easily damaged by the tooling of the automated equipment, causing the leakage to increase. Therefore, the speaker module produced has high performance consistency and a high production yield, which is beneficial to improving the pass rate and saving manufacturing costs.

[0019] Compared with the existing speaker module, the leakage hole and the mesh at the leakage hole are eliminated, which not only helps to simplify the structure of the speaker module, but also helps to reduce the cost of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 This is a schematic structural diagram of a speaker module according to Embodiment 1 of the present utility model;

[0022] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 This is an exploded view of the speaker module of the first embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of a metal plate in a loudspeaker module of another structure according to the first embodiment of the present invention.

[0025] Description of Figure Numbers:

[0026] 1. Module housing; 11. Sound outlet hole; 12. Installation slot; 13. Injection hole; 14. Leakage slot; 15. Groove; 16. Plastic housing; 17. Metal plate;

[0027] 2. Sealing sheet;

[0028] 3. Fixing glue;

[0029] 4. Double-sided tape. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Embodiment 1

[0037] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is: a speaker module, comprising a module shell 1, a speaker unit (not shown in the figure), a sealing sheet 2, a fixing glue 3 and sound-absorbing particles (not shown in the figure), the speaker unit is installed in the module shell 1 and divides the internal space of the module shell 1 into a front cavity and a rear cavity, the module shell 1 is provided with a sound outlet 11 connected to the front cavity, the outer surface of the module shell 1 is provided with a mounting groove 12, the bottom surface of the mounting groove 12 is provided with a perfusion hole 13 and a leakage groove 14, the perfusion hole 13 is connected to the rear cavity, the sound-absorbing particles are filled in the rear cavity, one end of the leakage groove 14 is connected to the perfusion hole 13, the sealing sheet 2 is bonded to the bottom surface of the mounting groove 12, the sealing sheet 2 covers at least a part of the leakage groove 14 and the perfusion hole 13, and the fixing glue 3 connects the edge of the sealing sheet 2 and the module shell 1.

[0038] In the actual production process of the speaker module, the sound-absorbing particles are first poured into the rear cavity through the pouring hole 13, and then the sealing sheet 2 is bonded to the bottom surface of the mounting groove 12 through the double-sided adhesive 4 or other adhesives to seal at least part of the leakage groove 14 and the pouring hole 13, and then the fixing glue 3 is applied to the edge of the sealing sheet 2. To facilitate the application of the fixing glue 3, the edge of the opening of the mounting groove 12 is preferably chamfered, and the chamfer can be either a rounded angle or an obtuse angle.

[0039] In order to prevent the sound-absorbing particles from blocking the leakage groove 14 and escaping outward through the leakage groove 14 , the particle size of the sound-absorbing particles is larger than the cross-sectional diameter size of the leakage groove 14 .

[0040] Optionally, the leakage groove 14 has at least one bending portion. In this embodiment, the leakage groove 14 is in a wavy shape as a whole. In other embodiments, the leakage groove 14 can be in other shapes, which are specifically set according to actual needs.

[0041] Optionally, a groove 15 is provided on the outer surface of the module housing 1, and the other end of the leakage groove 14 is connected to the groove 15. In detail, the groove 15 will not be blocked by the sealing sheet 2. The other end of the leakage groove 14 is connected to the wall of the groove 15 to ensure that the leakage groove 14 will not be completely blocked, thereby ensuring that the leakage groove 14 can perform the air release function normally and stably.

[0042] In this embodiment, the material of the sealing sheet 2 is PET (polyethylene terephthalate). In other embodiments, the material of the sealing sheet 2 can also be PEN (polyethylene naphthalate), PI (polyimide), PEEK (polyetheretherketone) or other airtight materials.

[0043] The module housing 1 includes a plastic housing 16, and the mounting groove 12 is provided on the plastic housing 16. When the module housing 1 includes a metal plate 17 and a plastic housing 16 which are formed into an integral structure by insert injection molding, Figure 4 As shown, the mounting groove 12 may also be provided on the metal plate 17, and the metal plate 17 may be a steel plate or the like.

[0044] 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 speaker module, characterized in that: include A module housing, wherein an installation groove is provided on the outer surface of the module housing, a filling hole and a leakage groove are provided on the bottom surface of the installation groove, and one end of the leakage groove is connected to the filling hole; A sealing sheet, the sealing sheet being bonded to the bottom surface of the mounting groove, the sealing sheet shielding at least a portion of the leakage groove and the injection hole; A fixing glue is used to connect the edge of the sealing sheet and the module housing.

2. The speaker module according to claim 1, characterized in that: The leakage groove has at least one bending portion.

3. The speaker module according to claim 2, characterized in that: The leakage groove is in a wavy line shape as a whole.

4. The speaker module according to claim 1, characterized in that: The outer surface of the module shell is provided with a groove, and the other end of the leakage groove is connected to the groove.

5. The speaker module according to claim 1, characterized in that: The sealing sheet is made of PET, PEN, PI or PEEK.

6. The speaker module according to claim 1, characterized in that: The sealing sheet is bonded to the bottom surface of the mounting groove by double-sided adhesive.

7. The speaker module according to claim 1, characterized in that: The module housing comprises a plastic shell, and the mounting groove is arranged on the plastic shell.

8. The speaker module according to claim 1, characterized in that: The module housing comprises a metal plate and a plastic shell which are formed into an integrated structure by insert injection molding, and the mounting groove is arranged on the metal plate.

9. The speaker module according to claim 1, characterized in that: It also includes a speaker unit and sound-absorbing particles. The speaker unit is installed in the module shell and divides the internal space of the module shell into a front cavity and a rear cavity. The infusion hole is connected to the rear cavity. The module shell is provided with a sound outlet hole connected to the front cavity. The sound-absorbing particles are filled in the rear cavity. The particle size of the sound-absorbing particles is larger than the cross-sectional diameter size of the leakage groove.

10. The speaker module according to claim 1, characterized in that: The edge of the opening of the mounting groove is chamfered.

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