JPH114493A - Dust-proof net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a mesh sheet from being broken or deformed in an assembling work by adopting a structure that a ring spacer having a restoration force to a planar shape with an elastic force and made of a PET or the like is clad to a light-weight mesh sheet, processed almost to be the shape of a loudspeaker front side in matching with a processing end of both sides of the speaker. SOLUTION: This dust-proof net 5 is mounted to a loudspeaker to prevent the infiltration of dust and water drops from the outside of a cabinet 1 through sound holes 3, a mesh sheet made of nylon (R) fibers is processed almost to be the shape of the front side of the speaker 7 and an elastic ring spacer 6 having an elasticity made of a PET or the like is clad to the processing end. The spacer 6 occupies the dust-proof net 5 and a cone paper sheet 8 of the speaker 7 and uses the elastic ring shape for providing restoration force of the mesh sheet into a planar shape, so as to prevent the mesh sheet at assembling from being deformed or deviated from the normal position or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dustproof net inserted between a plurality of sound holes, a cabinet having a speaker mounting structure, and a speaker unit in a speaker portion of a portable electronic device.

[0002]

2. Description of the Related Art A conventional speaker mounting mechanism having a dust-proof net of this kind is shown in FIGS.

FIG. 3 is a sectional view of a conventional speaker mounting mechanism, FIG. 4 is an exploded perspective view of the conventional speaker mounting mechanism, and FIG.

[0004] As shown in FIGS.
1 is provided with a sound hole 13 for passing sound waves, and a rib 12 for positioning the dustproof net 15 and the speaker 17. After the dustproof net 15 and the speaker 17 are positioned and inserted into the rib 12, The structure is such that the speaker holder 19 is fixed to the fixing boss 14 with the fixing screw 20, and the speaker holder 19 is assembled in the order described above.

[0005] The conventional dustproof net does not cause any problems such as deformation after being incorporated as described above, but since the material of the net is a lightweight sheet, various problems in handling at the time of assembling occur.

As one method of preventing deformation of a dust-proof net, methods for increasing the strength of the net itself are disclosed in Japanese Utility Model Laid-Open No. 58-37288, Japanese Patent Laid-Open Nos. 60-11596, and 61-4398. ing.

[0007]

In recent years, portable devices have been required to be lighter, thinner and smaller, and therefore, various devices have been proposed to improve the defect while maintaining lightness.

The problem of the prior art in FIGS. 3 and 4 will be described with reference to FIG.

Conventionally, the dust-proof net 15 can be easily formed by a punching die and the material itself is inexpensive. The dust-proof net 15 is made of nylon fiber or the like, and has a soft property such as easy breaking. When the net 15 is positioned and inserted into the positioning rib 12 of the cabinet 11 and the speaker 17 is dropped thereon, the speaker 17 is displaced, or when the speaker 17 is slipped in to improve workability, it is mounted. The dust-proof net 15 may be attached while being displaced by being pulled together with the tip of the speaker 17, or the dust-proof net 15 may be broken by the tip of the speaker 17.

[0010] If a part that is not dust-proofed occurs when it is mounted with the gap, or if the part is broken, the bent part of the dust-proof net 15 is attached to the cone paper 1 of the speaker 17.
8 and when using the speaker 17, the dustproof net 1
5 and the cone paper 18 may come into contact with each other and generate chattering noise.

Further, depending on the type of the speaker 17, a type in which the cone paper 17 protrudes from the contact surface with the dustproof net 15 cannot be used with a simple mounting mechanism of this kind.

Japanese Utility Model Application Laid-Open No. 58-37288,
As disclosed in JP-A-111596 and JP-A-61-4398, in a dust-proof net, the method of increasing the strength of the net itself requires material selection and special processing for increasing the strength. However, there is a problem that it tends to be expensive, and it is difficult to form a sheet to reduce the weight.

[0013]

[MEANS FOR SOLVING THE PROBLEMS] A speaker unit;
Structure of the dustproof net in a speaker mounting structure of a portable device including a cabinet having a plurality of small-diameter sound holes in a range of a substantially speaker shape, and a mesh dustproof net interposed between the speaker and the cabinet. A ring-shaped spacer made of PET or the like and having elasticity is fitted to the processed end of the lightweight mesh sheet made of nylon fiber or the like and processed into a substantially speaker front shape on the speaker surface side. Having a laminated structure allows spacing between the dust-proof net and the speaker cone paper by means of spacers, and the elastic shape of the ring gives the mesh sheet a planar shape-restoring force. In this way, it is possible to prevent the mesh sheet from being bent or deformed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a dustproof net according to the present invention will be described below with reference to FIGS.

FIG. 1 is a cross-sectional view of a speaker mounting mechanism according to one embodiment of the present invention, and FIG. 2 is an exploded perspective view of the speaker mounting mechanism of one embodiment of the present invention.

1 and 2, a positioning rib 2 for a speaker 7, a sound hole 3 and a boss 4 for fixing a speaker holder are formed on a main body cabinet 1. A spacer 6 is provided in the positioning rib 2. The dustproof net 5 to which is attached is dropped, the speaker 7 is dropped thereon, and these are fixed to the main body cabinet 1 by the speaker holder 9 and the holding screw 10 by the fixing boss 4. The installation procedure is performed in a conventional manner.

The dustproof net 5 is attached for the purpose of preventing dust and water drops from entering from outside the cabinet 1 through the sound holes 4.
A mesh sheet made of a nylon fiber or the like similar to the conventional one is processed into a substantially speaker 7 front shape, and a ring-shaped spacer 6 having elasticity such as PET is attached to the processed end thereof. The spacing between the dust-proof net 5 and the cone paper 8 of the speaker 7 is ensured, and the elastic shape of the ring allows the mesh sheet to have a flat shape returning force, so that the mesh sheet can be broken during assembly work or the like. Deformation and displacement can be prevented.

Further, the spacer 6 can be made of PET or the like, which can be easily made by a punching die or the like, has a high degree of freedom in selecting a thickness, and is used for adjusting the fixing pressure of the speaker. It is valid.

Since both the mesh sheet and the spacer 6 can be die-cut, the dust-proof net can be formed simultaneously with the removal of the spacer 6 by attaching the spacer 6 to the mesh sheet after hollowing out the spacer 6.

As described above, including the conventional example, all the components of the speaker portion of the dustproof net 5 to which the speaker 7 and the spacer 6 are bonded are sandwiched by the main body cabinet 1 and the speaker holder 9 at a time. The fixing mechanism that can be fixed is a method that can simplify the structure and reduce the cost. The attachment of the spacer 6 to the dust-proof net 5 results in the thin and lightweight dust-proof net 5 in this mounting method. This is an effective invention for preventing problems.

[0021]

According to the present invention, the structure of the dustproof net is formed by attaching a ring-shaped spacer having elasticity to a processed end portion of a lightweight mesh sheet processed into a substantially speaker shape on the speaker surface side. With spacers, the spacing between the dust-proof net and the speaker cone paper is prevented to prevent chattering noise due to hitting.Since die cutting is easy, there is a high degree of freedom in selecting the thickness and adjustment of the speaker fixing pressure. In addition to being effective, the shape of the ring with elasticity has a shape restoring force,
It is possible to prevent the mesh sheet from being deformed or displaced during the assembling operation or the like.

[Brief description of the drawings]

FIG. 1 is a sectional view of a speaker mounting mechanism of the present invention.

FIG. 2 is an exploded perspective view of the speaker mounting mechanism of the present invention.

FIG. 3 is a cross-sectional view of a conventional speaker mounting mechanism.

FIG. 4 is an exploded perspective view of a conventional speaker mounting mechanism.

FIG. 5 is an explanatory view of folding of a dustproof net.

[Explanation of symbols]

 1, body cabinet 2, positioning rib 3, sound hole 4, fixing boss 5, dustproof net 6, spacer ring 7, speaker 8, cone paper 9, speaker holder 10, fixing screw 11, body cabinet 12, positioning rib 13, Sound hole 14, Fixing boss 15, Dust-proof net 16, Missing number 17, Speaker 18, Cone paper 19, Speaker holder 20, Fixing screw

Claims (1)

[Claims] 1. A speaker unit, a cabinet having a plurality of small-diameter sound holes in a substantially speaker-shaped range,
The structure of the dust-proof net in a speaker mounting structure of a portable device constituted by a mesh-shaped dust-proof net interposed between the speaker and the cabinet, wherein the dust-proof net is made of nylon fiber or the like and is processed into a substantially speaker front shape. In addition, it is characterized in that it is a structure in which a ring-shaped spacer made of PET or the like and having a planar shape restoring force by elastic force is adhered to the processed end of the lightweight mesh sheet on the speaker surface side, Dustproof net used for speaker mounting structure of portable equipment.