# US 10,873,802 B2 · Shutter covered on sound hole of loudspeaker module and assembling method thereof, loudspeaker module

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- Number: US 10,873,802 B2
- Document ID: US10873802B2
- Status: Granted
- Kind: B2
- Application number: 15/694,054
- Filed: 2017-09-01
- Published: 2018-03-01
- Granted: 2020-12-22
- Earliest claimed: 2013-05-10
- Assignees: Goertek Inc.
- Applicants: Goertek Inc.
- Inventors: Shuangshuang Fan; Gang Chen; Dan Han; Yun Yang; Hongwei Du
- Web page: https://patentgrep.com/patent/US10873802B2

## CPC

- H04R 1/2803: {for loudspeaker transducers}
- B29B 11/04: by assembling preformed material
- B29B 11/08: Injection moulding
- B29B 11/14: characterised by structure or composition
- B29C 45/14: incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles {(B29C45/1671 takes precedence)}
- B29C 45/14008: {Inserting articles into the mould (B29C45/14827 takes precedence)}
- B29C 45/1671: {with an insert}
- B29C 49/071: {Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties}
- H04R 1/02: Casings; Cabinets {; Supports therefor;} Mountings therein (H04R1/28 takes precedence {; attachments for microphones H04R1/08; mounting of transducers in earpieces H04R1/1075})
- H04R 1/023: {Screens for loudspeakers}
- B29C 2949/0715: the preform having one end closed
- B29K 2101/00: Use of unspecified macromolecular compounds as moulding material {(use of unspecified rubbers B29K2021/00)}
- B29K 2105/256: {Sheets, plates, blanks or films}
- B29L 2031/3437: {Cellular phones}
- B29L 2031/3481: {Housings or casings incorporating or embedding electric or electronic elements}
- H04R 2499/11: Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

The present invention provides a blocking piece covering the sound hole of a loudspeaker and an assembling method thereof, and a loudspeaker module. The blocking piece covering the sound hole of the loudspeaker module is arranged at a position where the sound hole is located on the case of the loudspeaker module and covers the sound hole. The blocking piece is made of a nonmetallic flexible net. The nonmetallic net-shaped blocking piece and the case are formed integrally by injection moulding. The loudspeaker module and the blocking piece covering the sound hole thereof in the present invention have advantages of good acoustic performance, high reliability, high space utilization rate and high production efficiency. The assembling method for the blocking piece covering the sound hole of the loudspeaker module further makes the assembling of the blocking piece convenient for operation, and improves the assembling efficiency and assembling quality.

## Claims

### Claim 1

A loudspeaker module, comprising a case and a loudspeaker unit accommodated and fixed in the case, wherein a sound hole is disposed for emission of sound on the case and near to the loudspeaker unit, wherein the loudspeaker module further comprises a blocking piece covering a sound hole of a loudspeaker module, wherein:
the blocking piece is disposed at a position where the sound hole is located on a case of the loudspeaker module and is covered on the sound hole,
the blocking piece is a nonmetallic flexible net, and is integrally formed with the case of the loudspeaker module by injection molding, on a wall of the case that is integrally formed with other walls of the case by the injection molding,
the thickness of the blocking piece is in the range of 0.05 mm to 0.3 mm, and
the diameter of the meshes of the blocking piece is in the range of 0.03 mm to 0.1 mm,
wherein the blocking piece is a part of a first injection molding part, and the first injection molding part forms a portion of an internal surface of the wall of the case that is integrally formed with other walls of the case by the injection molding,
the first injection molding part comprises a first injection molding body integrated with the blocking piece, and
a periphery of the blocking piece is fixed by the first injection molding body.

### Claim 2 (depends on 1)

The loudspeaker module according to claim 1, wherein a sound-guiding cavity connecting the loudspeaker unit with the sound hole is disposed in the case.

### Claim 3 (depends on 2)

The loudspeaker module according to claim 2, wherein the sound hole is disposed on a sidewall of the case.

### Claim 4 (depends on 2)

The loudspeaker module according to claim 2, wherein the sound-guiding cavity has a horn shape broadening from the inside out.

### Claim 5 (depends on 1)

The loudspeaker module according to claim 1, wherein the thickness of the blocking piece is in the range of 0.05 mm to 0.1 mm, and the diameter of the meshes of the blocking piece is in the range of 0.03 mm to 0.05 mm.

### Claim 6 (depends on 1)

The loudspeaker module according to claim 1, wherein the case is made of a nonmetallic material.

### Claim 7 (depends on 6)

The loudspeaker module according to claim 6, wherein the blocking piece is made of a nylon mesh cloth.

### Claim 8 (depends on 1)

The loudspeaker module according to claim 1, wherein the blocking piece is embedded in the case or exposed to the internal surface.