Composite dome for loudspeaker

Abstract

The utility model discloses a composite dome for a loudspeaker, which comprises an upper skin layer, a lower skin layer and a middle filling layer, and the middle filling layer is arranged between the upper skin layer and the lower skin layer. The composite globe-roof film is provided with a main area and a thinned area, the thickness of the thinned area is smaller than that of the main area, and the end face of only one side of the main area and the end face of the same side of the thinned area are located on the same plane. According to the utility model, through the arrangement of the main area and the thinning area, the connection position of the dome and other parts can be thinned to form a 3D structure, so that the overall thickness of the loudspeaker can be reduced, and the loudspeaker adapts to the thinning trend.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a composite dome for a loudspeaker. Background Art

[0002] Speakers are important components of current electronic devices such as mobile phones, and dome membranes are one of the important components of speakers. Current dome membranes, such as the dome used for speaker diaphragms disclosed in patent number CN206674183U, include a polymethacrylimide foam plastic layer with a relative upper surface and a lower surface, a first liquid crystal polymer layer bonded to the upper surface of the polymethacrylimide foam plastic layer, and a second liquid crystal polymer layer bonded to the lower surface of the polymethacrylimide foam plastic layer. This type of dome is a multi-layer planar structure, and the thickness cannot be reduced without affecting the performance. However, how to maintain or even improve the performance of the speaker as the thickness continues to decrease is not achieved by current dome membranes. Utility Model Content

[0003] The utility model aims to avoid the shortcomings of the prior art and provides a high-performance composite dome for a loudspeaker which can be thinned.

[0004] The utility model solves the technical problem by adopting the following technical solution: a composite dome for a loudspeaker, the composite dome comprising an upper skin layer, a lower skin layer and an intermediate filling layer, the intermediate filling layer being arranged between the upper skin layer and the lower skin layer;

[0005] The composite dome has a main area and a thinned area, the thickness of the thinned area is smaller than that of the main area, and one and only one end surface of the main area is in the same plane as the end surface of the thinned area on the same side.

[0006] In several embodiments, the upper skin layer of the thinned area has the same thickness as the upper skin layer of the main area and is in the same plane, the lower skin layer of the thinned area has the same thickness as the lower skin layer of the main area and is in a different plane, and the thickness of the middle filling layer of the thinned area is less than the thickness of the middle filling layer of the main area.

[0007] In several embodiments, the thickness of the intermediate filling layer in the thinned area is 1 / 3-1 / 2 of the thickness of the intermediate filling layer in the main area.

[0008] In some embodiments, the thinned region is disposed around the main region.

[0009] In several embodiments, the upper skin layer is provided with a plurality of upper protrusions, the lower skin layer is provided with a plurality of lower protrusions, the positions of the upper protrusions correspond to the lower protrusions and form a filling area inside, and the middle filling layer is provided in the filling area.

[0010] In several embodiments, the upper skin layer is in contact with the lower skin layer.

[0011] In several embodiments, the outer sides of the upper skin layer and the lower skin layer are filled with an outer filling layer.

[0012] In several embodiments, a portion of the outer filling layer on the lower skin layer has an inward depression, and a thinned area is formed at a position where the depression is located.

[0013] The beneficial effects of the utility model are:

[0014] The utility model can thin the connection position of the dome membrane and other parts by setting the main area and the thinning area to form a 3D structure, thereby reducing the overall thickness of the speaker and adapting to the thinning trend. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are for illustrative purposes only of selected embodiments and do not represent all possible implementations, and should not be considered to limit the scope of the present invention.

[0016] Figure 1 The overall structure of the composite dome for the loudspeaker in Example 1 is schematically shown;

[0017] Figure 2 Schematically shows Figure 1 The side view structure of

[0018] Figure 3 Schematically shows Figure 2 The cross-sectional structure of the middle A part;

[0019] Figure 4 The overall structure of the composite dome for the speaker in Example 2 is schematically shown;

[0020] Figure 5 The partial cross-sectional structure of the composite dome used for the loudspeaker in Example 3 is schematically shown. DETAILED DESCRIPTION

[0021] Below, embodiments of the present invention are described in detail with reference to the accompanying drawings. To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the present invention for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] like Figure 1-Figure 3 As shown, the composite dome for the loudspeaker provided in this embodiment mainly includes an upper skin layer 20, a lower skin layer 30 and a middle filling layer 40. The middle filling layer 40 is arranged between the upper skin layer 20 and the lower skin layer 30. The base layer 10 can be made of aluminum, which has good ductility and can be extruded and stretched. The middle filling layer 40 is made of compressible materials such as polymers. After being extruded by the mold, it will not break or fail.

[0025] Specifically, the composite dome has a main area 11 and a thinned area 12. The thinned area 12 is arranged around the main area 11. The thickness of the thinned area 12 is less than the thickness of the main area 11, and the main area 11 has only one side end face that is in the same plane as the same side end face of the thinned area 12.

[0026] Among them, the upper skin layer 20 of the thinning area 12 has the same thickness as the upper skin layer 20 of the main area 11 and is in the same plane, the lower skin layer 30 of the thinning area 12 has the same thickness as the lower skin layer 30 of the main area 11 and is in a different plane, the thickness of the intermediate filling layer 40 of the thinning area 12 is less than the thickness of the intermediate filling layer 40 of the main area 11, and the thickness of the intermediate filling layer 40 of the thinning area 12 is 1 / 3-1 / 2 of the thickness of the intermediate filling layer 40 of the main area 11.

[0027] Example 2

[0028] like Figure 4 As shown, in this embodiment, the composite dome has two main regions 11 and two thinned regions 12. The two main regions 11 are arranged in parallel, and the two thinned regions 12 are respectively arranged around a single main region 11 and are connected.

[0029] Example 3

[0030] like Figure 5As shown, in this embodiment, the composite dome has a main area 11 and a thinning area 12, and a plurality of upper protrusions 21 are provided on the upper skin layer 20, and a plurality of lower protrusions 31 are provided on the lower skin layer 30. The positions of the upper protrusions 21 and the lower protrusions 31 correspond to each other and form a filling area inside. The filling area has a square structure, and the intermediate filling layer 40 is arranged in the filling area, and other positions of the upper skin layer 20 and the lower skin layer 30 are all in contact with each other.

[0031] Furthermore, the outer sides of the upper skin layer 20 and the lower skin layer 30 are filled with an outer filling layer 50 , which is a glue layer. Part of the outer filling layer 50 on the lower skin layer 30 has an inward depression 51 , and the position of the depression 51 forms a thinning area 12 .

[0032] Here, thinning of the outer filling layer 50 can be achieved at the desired position without affecting the upper skin layer 20, the lower skin layer 30 or the middle filling layer 40, so that the thickness can be fine-tuned at the corresponding position according to needs.

[0033] All the methods described herein can be performed in any suitable order. Any and all examples used, or exemplary language provided herein (such as "for example") are merely to better illustrate the present invention, and are not intended to limit the scope of the present invention, unless the claims are included. The language in the detailed description should not be understood as indicating any essential factors for practicing the present invention that are not claimed.

[0034] The present invention describes preferred embodiments, including the best way to carry out the present invention known to the inventor. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors anticipate that skilled artisans may use such variations as appropriate, and the inventors point out that the present invention may be implemented in other ways than those specifically described herein. Therefore, the present invention includes all improvements included in the spirit and scope of the present invention as defined by the claims. Moreover, unless otherwise stated or clearly contradictory in content, the present invention includes any of the above factors and all possible variations thereof.

Claims

1. A composite dome for a loudspeaker, characterized in that: The composite dome comprises an upper skin layer (20), a lower skin layer (30) and an intermediate filling layer (40), wherein the intermediate filling layer (40) is arranged between the upper skin layer (20) and the lower skin layer (30); The composite dome comprises a main region (11) and a thinned region (12); the thickness of the thinned region (12) is smaller than the thickness of the main region (11); and the end face of one side of the main region (11) and the end face of the same side of the thinned region (12) are in the same plane.

2. The composite dome for a loudspeaker according to claim 1, characterized in that: The upper skin layer (20) of the thinned area (12) has the same thickness as the upper skin layer (20) of the main area (11) and is located in the same plane, the lower skin layer (30) of the thinned area (12) has the same thickness as the lower skin layer (30) of the main area (11) and is located in a different plane, and the thickness of the middle filling layer (40) of the thinned area (12) is smaller than the thickness of the middle filling layer (40) of the main area (11).

3. The composite dome for a loudspeaker according to claim 2, characterized in that: The thickness of the intermediate filling layer (40) in the thinned region (12) is 1 / 3 to 1 / 2 of the thickness of the intermediate filling layer (40) in the main region (11).

4. The composite dome for a loudspeaker according to claim 3, characterized in that: The thinned area (12) is arranged around the main area (11).

5. The composite dome for a loudspeaker according to claim 1, characterized in that: The upper skin layer (20) is provided with a plurality of upper protrusions (21), and the lower skin layer (30) is provided with a plurality of lower protrusions (31). The positions of the upper protrusions (21) and the lower protrusions (31) correspond to each other and form a filling area inside. The intermediate filling layer (40) is arranged in the filling area.

6. The composite dome for a loudspeaker according to claim 5, characterized in that: The upper skin layer (20) is in contact with the lower skin layer (30).

7. The composite dome for a loudspeaker according to claim 5, characterized in that: The outer sides of the upper skin layer (20) and the lower skin layer (30) are filled with an outer filling layer (50).

8. The composite dome for a loudspeaker according to claim 7, characterized in that: The outer filling layer (50) on part of the lower skin layer (30) has an inward depression (51), and the location of the depression (51) forms a thinning area (12).

Images