Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Loudspeaker diaphragm and loudspeaker

A loudspeaker and polyetherketoneketone technology, which is applied in the field of acoustic and electric devices, can solve the problems of unfavorable speaker miniaturization, high processing temperature, and poor tensile performance, and achieve energy saving, low processing temperature, and temperature resistance. Good results

Active Publication Date: 2021-10-01
辽宁弗佰克高新材料有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PEEK materials have disadvantages such as high processing temperature, low Tg point (glass transition temperature), and poor tensile properties, which are not conducive to the development of speakers in terms of miniaturization and high power.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Loudspeaker diaphragm and loudspeaker
  • Loudspeaker diaphragm and loudspeaker
  • Loudspeaker diaphragm and loudspeaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] The diaphragm portion in the speaker diaphragm provided in this example is a single layer structure, which is composed of a polyetherketone material.

[0070] The polyether ketone material in Example 1 was determined by performance, as follows:

[0071] Extruder temperature 350-380 ° C (ISO 527-1BA); tensile 6% -10% (ISO 527-1BA); tensile modulus 3.8-4.0 GPa (ISO 527-1BA); tensile strength (X / Y, ie, horizontal and longitudinal) 80-100MPa, tensile strength (Z, ie vertical xy direction) 48-65MPa; Tg point 160-165 ° C; density 1.29g / cm 3 .

Embodiment 2

[0073] In this example, the folding ring portion in the speaker diaphragm of the speaker diaphragm is two layers of composite structures, the composite structure being composed of a layer of polyetherketate material layer and a layer of substrate layers. The structure of the folding ring figure 2 Indicated.

[0074] Among them, the material used in the substrate layer is a dynamic vulcanized rubber polyurethane elastomer TPSIV.

Embodiment 3

[0076] In this example, the folding ring portion in the speaker diaphragm filler film is three layers of composite structures, which is composed of a layer of polyetherketate layer, a layer of substrate layer, and a layer of rubber layer. The structure of the folding ring image 3 As shown, the rubber layer is the intermediate layer, the polyetherketate layer and the substrate layer are the top and bottom layer, respectively.

[0077] Among them, the material employed by the substrate layer is a thermoplastic polyamide elastomer TPA.

[0078] The adhesive employed by the colloated layer is a polyurethane adhesive.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Tensile modulusaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of acoustoelectric devices, in particular to a loudspeaker diaphragm and a loudspeaker. The loudspeaker diaphragm comprises a closed folding ring part which protrudes upwards and a central part which is enclosed by the folding ring part, wherein the central part is provided with a plane structure or an upward convex structure, and the central part and the folding ring part are prepared from different raw materials; wherein the folding ring part comprises at least one layer of polyether ketone ketone material; the polyether ketone ketone material is prepared from the following raw materials: paraphthaloyl chloride and isophthaloyl chloride; the molar ratio of the paraphthaloyl chloride to the isophthaloyl chloride is (5 to 100) : (5 to 100). The loudspeaker diaphragm has the advantages of being low in processing temperature, high in Tg point, good in temperature resistance, wide in use temperature range, excellent in tensile property and the like. The product is beneficial to energy conservation and consumption reduction, has strong adaptive capacity to environment, can improve the low-frequency performance of the loudspeaker, and is not easy to break the membrane.

Description

Technical field [0001] The present invention relates to the field of electrical appliance devices, and in particular, there is a speaker diaphragm and a speaker. Background technique [0002] Miniature phonograms are widely used in portable electronic devices such as hearing aids, mobile phones, laptops due to small volume, easy carrying and other advantages. With the rapid development of these portable electronic devices, people's functionality requirements of portability electronic devices are getting stronger, and therefore, the micro-soundter applied to portability electronic devices has also rapidly developed. [0003] Patent No. CN104796843A discloses a base material having a PEEK polyether ether ketone material as a diaphragm. However, the polyether ether ketone material has a high processing temperature, the TG point (glass transition temperature) is low, and the tensile performance is poor, which is not conducive to the development of the speaker in miniaturization and h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04R7/12H04R9/06H04R29/00
CPCH04R7/125H04R9/06H04R29/00H04R2307/025
Inventor 范雷达庞健
Owner 辽宁弗佰克高新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com