Loudspeaker diaphragm

A loudspeaker and adhesive layer technology, applied in the direction of sensors, electrical components, etc., can solve the problems of inconspicuous improvement, easy deformation of the diaphragm, and easy contamination by impurities, etc., and achieve widening of the frequency band of loudspeaker products, high power resistance reliability, The effect of excellent structural stability

CN105188000AActive Publication Date: 2015-12-23GOERTEK INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-12-23

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Abstract

The invention discloses a loudspeaker diaphragm which comprises a ball top part (20) in the center and a folding part (10) at the rim. The folding part (10) is a single layer structure made from a TPEE (thermoplastic polyester elastomer) material layer (2) or is a composite structure provided with at least one TPEE material layer (2). Compared with diaphragms made from TPU materials, the diaphragm of the invention has good toughness and strength, can effectively reduce the vibration frequency, and expand the bandwidth of a product. Further, the diaphragm is also stable in structure and reliable in withstanding power and provides good stability of vibration frequency.
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Description

technical field

[0001] The invention relates to the technical field of electroacoustic products, in particular to a loudspeaker diaphragm. Background technique

[0002] The diaphragm is the sound-generating part of the speaker, and its structure and material play a decisive role in the effect of the speaker. In order to reduce the resonant frequency of the product, widen the frequency band, and improve the sound quality of the low-frequency band and high-frequency band of the speaker, the ring part on the edge of the diaphragm often uses thermoplastic polyurethane elastomer (TPU) with high elasticity, large internal friction and good compliance. )Material.

[0003] When TPU is used as the ring part of the diaphragm, the speaker product will have at least the following defects:

[0004] First, the resonant frequency F0 of the product fluctuates greatly: after the speaker product is assembled, the resonant frequency F0 of the product increases with time;

[0005] Second, po...

Examples

Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] Figure 1a The front view of the diaphragm provided by the embodiment of the present invention, Figure 1b for Figure 1a Schematic diagram of the surround of the middle speaker diaphragm.

[0046] Such as Figure 1a with Figure 1b Commonly shown, Figure 1a The loudspeaker diaphragm in the middle includes a ball top 20 at the center and a ring portion 10 at the edge. The ring portion 10 is a single-layer structure composed of one layer of thermoplastic polyester elastomer TPEE material layer 2 ; or, the ring portion 10 is a composite structure composed of at least one layer of thermoplastic polyester elastomer TPEE material layer 2 .

[0047] Thermoplastic polyester elastomer (abbreviated as TPEE or TPC, referred to as TPEE in...