CN220383220U - Loudspeaker module - Google Patents

Abstract

The utility model provides a loudspeaker module, which comprises a shell and a kernel arranged in the shell, wherein the shell is provided with a sound outlet, a front cavity is arranged between the kernel and the shell, the front cavity is communicated with the sound outlet, and a steel sheet is arranged at the corresponding position of the shell and the front cavity, and the loudspeaker module is characterized in that: the steel sheet is provided with a bulge protruding towards the front cavity, the height of the bulge from one end far away from the sound outlet to one end close to the sound outlet is larger and larger than the height of the inner core from one end far away from the sound outlet to one end close to the sound outlet. Through setting up the arch of slope on the steel sheet to make the kernel slope set up, do not influence the preceding chamber and play the sound air current, both strengthened preceding chamber steel sheet intensity, when reducing the casing resonance, effectively guaranteed the vibration space again.

Description

Loudspeaker module

Technical Field

The utility model relates to the field of electronic products, in particular to a loudspeaker module.

Background

At present, the mobile phone terminal is lighter and thinner, the size and thickness of the miniature BOX loudspeaker are required to be higher and higher, and for some high-performance loudspeakers, the shell adopts a steel sheet design, as shown in fig. 8, so that resonance phenomenon is generated when the loudspeaker vibrates and is conducted to the BOX steel sheet, and the sound quality of the product is affected.

At present, the scheme for solving the resonance of the steel sheet is that the steel sheet is thickened or the steel sheet is in a concave-convex structure, and the two modes occupy the vibration space of the loudspeaker, thereby influencing the sound effect.

Disclosure of Invention

The present utility model is directed to overcoming the shortcomings of the conventional art and providing a speaker module.

The aim of the utility model is achieved by the following technical measures: the utility model provides a speaker module, includes the casing and installs the kernel in the casing, be provided with the sound hole on the casing, be provided with the antechamber between kernel and the casing, the antechamber sets up with the sound hole intercommunication, the casing is provided with the steel sheet with the department of correspondence in antechamber, its characterized in that: the steel sheet is provided with a bulge protruding towards the front cavity, the height of the bulge from one end far away from the sound outlet to one end close to the sound outlet is larger and larger than the height of the inner core from one end far away from the sound outlet to one end close to the sound outlet.

As a preferable scheme, the inclination angle of the bulge is less than A and 0 degree is less than 5 degrees, the inclination angle of the inner core is less than B and 0 degree is less than 5 degrees, and the angle B is more than or equal to the angle A.

As a preferable scheme, the bulge and the steel sheet are integrally arranged.

As a preferable scheme, one end of the bulge, which is far away from the sound outlet, is positioned on the same plane with the steel sheet, and one end of the bulge, which is close to the sound outlet, is higher than the plane of the steel sheet.

As a preferable scheme, the included angle between the length direction of the bulge and the length direction of the sound outlet is less than C, and the angle C is more than 45 degrees.

As a preferable scheme, the bulges are provided with a plurality of groups, and the plurality of groups of bulges are arranged side by side along the length direction of the sound outlet.

As a preferred solution, each set of said projections is provided with one.

As a preferred solution, each set of said projections is provided with a plurality.

Preferably, the protrusions are arranged continuously or discontinuously in a strip shape.

As a preferable scheme, the protrusions are arranged intermittently in a block shape or in a dot shape.

Due to the adoption of the technical scheme, compared with the prior art, the utility model has the advantages that: through setting up the arch of slope on the steel sheet to make the kernel slope set up, do not influence the preceding chamber and play the sound air current, both strengthened preceding chamber steel sheet intensity, when reducing the casing resonance, effectively guaranteed the vibration space again.

The utility model is further described below with reference to the drawings and the detailed description.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a speaker module according to the present utility model.

Fig. 2 is a schematic cross-sectional view of a speaker module according to the present utility model.

Fig. 3 is a schematic diagram of a speaker module according to the present utility model.

Fig. 4 is a schematic diagram of a front view of a protrusion of a speaker module according to the present utility model.

Fig. 5 is a schematic diagram of a housing structure of a speaker module according to the present utility model.

Fig. 6 is a schematic view of a cross-sectional structure of a protrusion of a speaker module according to the present utility model.

Fig. 7 is a schematic diagram of a bump distribution structure of a speaker module according to embodiment 2 of the present utility model.

Fig. 8 is a schematic diagram of a prior art structure.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: as shown in fig. 1-6, a speaker module comprises a housing 1 and an inner core 2 arranged in the housing 1, wherein a sound outlet 4 is arranged on the housing 1, a front cavity 3 is arranged between the inner core 2 and the housing 1, and the front cavity 3 is communicated with the sound outlet 4. The vibrating diaphragm of the inner core 2 is positioned near the front cavity 3, and a steel sheet 5 is arranged at the corresponding position of the shell 1 and the front cavity 3.

As shown in fig. 1, 2 and 5, in the present embodiment, the sound outlet 4 is provided on the side surface of the casing 1 in a long strip shape.

As shown in fig. 2-5, the steel sheet 5 is provided with a protrusion 6 protruding toward the front cavity 3. The protrusions 6 are integrally and obliquely arranged along the length direction, namely, the height of one end relative to the plane of the steel sheet 5 is larger than that of the other end, and the inclination angle of the protrusions 6 is < A,0 DEG < A < 5 deg. In this embodiment, one end of the protrusion 6 is close to the sound hole 4, and the other end is far away from the sound hole 4, where the end far away from the sound hole 4 is located on the same plane with the steel sheet 5, and the end close to the sound hole 4 is higher than the plane where the steel sheet 5 is located, so that the protrusion 6 is integrally inclined.

As shown in fig. 2-3, the inner core 2 is installed in the casing 1, in this embodiment, the inner core 2 is also obliquely arranged, the inclination angle is +.b, 0 ° < +.b < 5 °, +.b+.gtoreq.a, so that the vibration space is not affected, and the air flow can flow out smoothly. In this embodiment, the angle b= the angle a=3°, and the diaphragm surface of the inner core 2 is parallel to the protrusion 6, so that the strength of the steel sheet 5 can be improved, and the vibration space can be ensured not to be reduced. In this embodiment, the space from the end far from the sound outlet 4 to the end near to the sound outlet 4 of the whole front cavity 3 is larger and larger, which is beneficial to the outflow of air flow and improves the sound quality.

In this embodiment, as shown in fig. 2, the inner core 2 is inclined by raising one end of the inner core 2 close to the sound outlet 4, and the other end is unchanged, so that the side wall of the corresponding position of the upper portion of the housing 1 and the raised end of the inner core 2 is correspondingly thinned, and the appearance of the whole speaker module is not changed.

As shown in fig. 4, in this embodiment, the protrusions 6 are arranged in a long strip shape, four groups of protrusions 6 are provided, each group of protrusions 6 is provided with one protrusion, the four groups of protrusions 6 are arranged side by side along the length direction of the sound outlet 4, and the sizes and shapes of the four groups of protrusions 6 are completely consistent. Other group numbers may be set as appropriate. The length of the protrusion 6 is set according to the specific case, and is not particularly limited.

As shown in fig. 6, the cross section of the protrusion 6 is rectangular, and may be other shapes, such as arc, semicircle, etc. The bulge 6 and the steel sheet 5 are integrally arranged and integrally formed by stamping, so that the strength of the steel sheet 5 can be effectively improved, and the resonance phenomenon is reduced.

As shown in fig. 4, in this embodiment, the angle between the length direction of the protrusion 6 and the length direction of the sound outlet 4 is +.c, where +.c > 45 °, so as to ensure that the sound outlet of the front cavity 3 is not affected. Therefore, the strength of the steel sheet 5 of the front cavity 3 is enhanced, the resonance of the shell 1 is reduced, and meanwhile, the vibration space is effectively ensured.

Example 2: as shown in fig. 7, in this embodiment, the protrusions 6 are arranged in a block shape, three groups of protrusions 6 are provided, each group of protrusions 6 is provided with three protrusions, the three groups of protrusions 6 are arranged side by side along the length direction of the sound outlet 4, each group of protrusions 6 is arranged in an overall inclined manner, that is, one end far away from the sound outlet 4 is connected with the steel sheet 5, and one end close to the sound outlet 4 is higher than the plane where the steel sheet 5 is located.

In this embodiment, c=75°, and does not affect the outflow of the air flow.

Claims (10)

1. The utility model provides a speaker module, includes the casing and installs the kernel in the casing, be provided with the sound hole on the casing, be provided with the antechamber between kernel and the casing, the antechamber sets up with the sound hole intercommunication, the casing is provided with the steel sheet with the department of correspondence in antechamber, its characterized in that: the steel sheet is provided with a bulge protruding towards the front cavity, the height of the bulge from one end far away from the sound outlet to one end close to the sound outlet is larger and larger than the height of the inner core from one end far away from the sound outlet to one end close to the sound outlet.

2. A loudspeaker module according to claim 1, wherein: the inclination angle of the bulge is less than 5 degrees, 0 degree < less than 5 degrees, the inclination angle of the inner core is less than 5 degrees, 0 degree < less than 5 degrees, and the angle B is more than or equal to the angle A.

3. A loudspeaker module according to claim 1, wherein: the bulges and the steel sheet are integrally arranged.

4. A loudspeaker module according to claim 1, wherein: one end of the bulge, which is far away from the sound outlet, is positioned on the same plane with the steel sheet, and one end of the bulge, which is close to the sound outlet, is higher than the plane of the steel sheet.

5. A loudspeaker module according to claim 1, wherein: the included angle between the length direction of the bulge and the length direction of the sound outlet is less than C, and the less than C is more than 45 degrees.

6. A loudspeaker module according to any one of claims 1 to 5, wherein: the bulges are provided with a plurality of groups, and the plurality of groups of bulges are arranged side by side along the length direction of the sound outlet.

7. A loudspeaker module according to claim 6, wherein: one for each set of said projections.

8. A loudspeaker module according to claim 6, wherein: each set of the protrusions is provided with a plurality of protrusions.

9. A loudspeaker module according to claim 6, wherein: the bulges are arranged continuously or discontinuously in a strip shape.

10. A loudspeaker module according to claim 6, wherein: the bulges are in block or point intermittent arrangement.