http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111362272-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9de52bba13e16028dffa8775e3f3f28 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2002-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04R31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04R31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-12 |
| filingDate | 2020-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_769dddb70831d7869aef11d586752a50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d1d5042e760442c1dde8c1ea1119e09a |
| publicationDate | 2020-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111362272-A |
| titleOfInvention | A rear cavity filler for reducing the resonance frequency of a loudspeaker and preparation method thereof |
| abstract | The present application discloses a back cavity filler for reducing the resonant frequency of a speaker and a preparation method. The mesoporous material is independently applied as the back cavity filler of a micro speaker. The molding method is simple. Mesoporous silica microspheres can be obtained by chemically hydrolyzing the raw materials of mesoporous materials by ester chemical hydrolysis, which can be used as back cavity fillers. The mesoporous silica microspheres with larger specific surface area and pore volume have more advantages in the adsorption and desorption process of the actual back cavity gas, and better virtually increase the volume of the rear cavity resonance space of the loudspeaker, so that the low frequency band of the loudspeaker can resonate. frequency decreased. Mesoporous silica microspheres have a uniform and adjustable pore size of mesoporous materials and a variety of pore structures, which are more convenient to study the factors affecting the low-frequency output performance of speakers by adjusting the conditions. The existence of mesopores accelerates the diffusion of gas in the pores, reduces the damping of the loudspeaker, significantly improves the low-frequency output of the loudspeaker, and improves the low-frequency acoustic performance of the loudspeaker. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114920579-A |
| priorityDate | 2020-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.