Ultrathin loudspeaker based on flexible material

Abstract

The utility model discloses an ultrathin loudspeaker based on flexible materials, which comprises a basin stand and a vibrating diaphragm covering the basin stand, a magnetic circuit assembly is arranged in a space formed by covering the bottom of the basin stand and the vibrating diaphragm, the upper half part of the magnetic circuit assembly is wrapped in the space, and the lower half part of the magnetic circuit assembly is wrapped in the space. A voice coil is arranged in a space formed by covering the basin frame and the vibrating diaphragm, the voice coil is sleeved on a magnetic circuit assembly, and the magnetic circuit assembly is of a planar magnetic circuit structure. According to the utility model, through optimizing the magnetic circuit design and the vibrating diaphragm structure, the ultra-thinness of the loudspeaker is realized, the sound quality performance is improved, the requirements of portable equipment and wearable equipment are met, the flexible design can adapt to various installation environments, and the application range is expanded.

Description

TECHNICAL FIELD

[0001] The utility model relates to loudspeaker technical field, especially a kind of ultra-thin loudspeaker based on flexible material. BACKGROUND

[0002] Loudspeaker is a kind of transducer that converts electrical signal into acoustic signal, and the types of loudspeaker are various, which are applied in various environments. When loudspeaker is applied in portable electronic devices, such as mobile phone, IPAD, etc., or installed indoors, it is often required to design the thickness of loudspeaker as small as possible, so that ultra-thin loudspeaker is developed.

[0003] Traditional loudspeaker is difficult to realize ultra-thin and improve sound quality performance due to magnetic circuit system and vibrating diaphragm structure. SUMMARY

[0004] To solve the above technical problems, an ultra-thin loudspeaker based on flexible material is provided, which realizes ultra-thin loudspeaker and improves sound quality performance by optimizing magnetic circuit design and vibrating diaphragm structure.

[0005] To achieve the above purpose, the utility model discloses an ultra-thin loudspeaker based on flexible material, which comprises a frame and a vibrating diaphragm covering the frame, a magnetic circuit assembly is arranged in the space formed by the bottom of the frame and the vibrating diaphragm, the upper half of the magnetic circuit assembly is wrapped in the space, a voice coil is arranged in the space formed by the frame and the vibrating diaphragm, the voice coil is sleeved on the magnetic circuit assembly, and the magnetic circuit assembly is a planar magnetic circuit structure.

[0006] Further, the vibrating diaphragm is made of multi-layer composite flexible material, which comprises a polyimide film and a graphene coating on the surface.

[0007] Further, the vibrating diaphragm is provided with a microstructure on the surface, and the microstructure is in corrugated or honeycomb shape.

[0008] Further, the vibrating diaphragm is provided with a first positioning support at the edge, the first positioning support is installed in the edge pressing part of the frame, the vibrating diaphragm is provided with a second positioning support at the bottom, the second positioning support surrounds the voice coil, and an arc-shaped dustproof cover is installed on the vibrating diaphragm above the voice coil.

[0009] Further, the frame is provided with a weight-reducing groove distributed along the circumference.

[0010] Further, the magnetic circuit assembly is composed of multi-layer neodymium-iron-boron flexible magnet stack and outer shell, and the shell is connected with a fixing sheet at the bottom, and the fixing sheet is attached to the bottom of the frame.

[0011] Compared with the prior art, the utility model discloses a kind of ultra-thin loudspeaker based on flexible material, by optimizing magnetic circuit design and vibrating membrane structure, realize the loudspeaker ultra-thin at the same time improve sound quality performance, meet the needs of portable device and wearable device, flexible design can adapt to multiple installation environments, expand application range. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0013] Figure 1 It is the overall structure schematic diagram of the utility model.

[0014] Figure 2 It is the vibrating membrane surface one kind of microstructure schematic diagram of the utility model.

[0015] Figure 3 It is the vibrating membrane surface another microstructure schematic diagram of the utility model.

[0016] In the drawing: 1 is basin frame;11 is weight-reducing groove;12 is edge pressing;2 is vibrating membrane;3 is magnetic circuit assembly;4 is voice coil;5 is first positioning support piece;6 is second positioning support piece;7 is dust cover. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0018] As shown in one embodiment of the utility model, Figure 1 The bottom of basin frame 1 is combined with vibrating membrane 2 to form space, and magnetic circuit assembly 3 is arranged in the space, the upper half of magnetic circuit assembly 3 is wrapped in the space, voice coil 4 is arranged in the space formed by the combination of basin frame 1 and vibrating membrane 2, voice coil 4 is sleeved on magnetic circuit assembly 3, magnetic circuit assembly 3 is plane magnetic circuit structure, magnetic circuit assembly 3 adopts multilayer neodymium iron boron flexible magnet stacking and outer side coating shell composition, shell bottom is connected with fixed sheet, fixed sheet is attached to the bottom of basin frame 1, flexible magnet is used to replace traditional magnetic steel, further reduce thickness, overall mechanism is compact, by optimizing magnetic circuit design and vibrating membrane structure, realize the loudspeaker ultra-thin at the same time improve sound quality performance, meet the needs of portable device and wearable device, flexible design can adapt to multiple installation environments, expand application range.

[0019] The diaphragm 2 is made of multi-layer composite flexible material, including polyimide film and a graphene coating on the surface, and has light weight and high rigidity.

[0020] As shown in Figure 2 and Figure 3 The diaphragm 2 is provided with a microstructure on the surface, which is in a corrugated or honeycomb shape, to enhance the sound pressure and frequency response.

[0021] The diaphragm 2 is provided with a first positioning support 5 at the edge, which is installed in the edge pressing part 12 of the basket 1, and a second positioning support 6 at the bottom, which surrounds the voice coil 4.

[0022] The basket 1 is provided with weight-reducing grooves 11 distributed along the circumference, and is packaged with flexible material to enhance durability and allow bending or fitting on a curved surface.

[0023] The points to be explained are as follows: first, in the description of the present application, it is necessary to explain that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change; secondly, in this paper, such as first and second and the like relationship terms are only used to distinguish one entity from another entity, and do not necessarily require or imply that there is any such actual relationship or order between the entities.

[0024] The above examples are only illustrative of the present application and do not constitute a limitation on the protection scope of the present application, and any design identical or similar to the present application belongs to the protection scope of the present application.

Claims

1. An ultrathin loudspeaker based on a flexible material, comprising a basket (1) and a diaphragm (2) which is lidded over the basket (1), characterized in that, The bottom of the yoke (1) is covered with the diaphragm (2) to form a space, and a magnetic circuit assembly (3) is arranged in the space, the upper half of the magnetic circuit assembly (3) is wrapped in the space, the yoke (1) is covered with the diaphragm (2) to form a space, and a voice coil (4) is arranged in the space, the voice coil (4) is sleeved on the magnetic circuit assembly (3), and the magnetic circuit assembly (3) is a planar magnetic circuit structure.

2. A flexible material-based ultra-thin loudspeaker according to claim 1, characterized in that, The diaphragm (2) is made of a multilayer composite flexible material, including a polyimide film and a graphene coating on the surface.

3. A flexible material-based ultra-thin loudspeaker according to claim 2, wherein, The diaphragm (2) is provided with a microstructure on the surface, and the microstructure is in a corrugated or honeycomb shape.

4. A flexible material-based ultra-thin loudspeaker according to claim 2, wherein, The edge of the diaphragm (2) is provided with a first positioning support (5), the first positioning support (5) is installed in the edge pressing portion (12) of the yoke (1), the bottom of the diaphragm (2) is provided with a second positioning support (6), the second positioning support (6) surrounds the voice coil (4), and an arc-shaped dust cover (7) is installed on the diaphragm (2) above the voice coil (4).

5. A flexible material-based ultra-thin loudspeaker according to claim 1, wherein, The yoke (1) is provided with a weight-reducing groove (11) distributed along the circumference.

6. A flexible material-based ultra-thin loudspeaker according to claim 1, wherein, The magnetic circuit assembly (3) is made of a multilayer neodymium iron boron flexible magnet stack and an outer shell, the bottom of the shell is connected with a fixing sheet, and the fixing sheet is attached to the bottom of the yoke (1).

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