CN203761578U

CN203761578U - Soundbox loudspeaker shield punching net

Info

Publication number: CN203761578U
Application number: CN201420057692.9U
Authority: CN
Inventors: 陈东红
Original assignee: DONGGUAN FENGHEHUANG ELECTRO-ACOUSTIC TECHNOLOGY Co Ltd
Current assignee: DONGGUAN FENGHEHUANG ELECTRO-ACOUSTIC TECHNOLOGY Co Ltd
Priority date: 2014-01-30
Filing date: 2014-01-30
Publication date: 2014-08-06
Anticipated expiration: 2024-01-30

Abstract

The utility model relates to the technical field of electro-acoustics, and in particular relates to a soundbox loudspeaker shield punching net which comprises a metal net. Net holes are arranged on the metal net. Latitude and longitude lines of one side, which is back to a loudspeaker diaphragm, of each net hole are plane-shaped. Latitude and longitude lines of one side which faces the loudspeaker diaphragm are non-plane-shaped. Latitude and longitude lines of one side, which faces the loudspeaker diaphragm, of each net hole tilt toward the direction of increasing of the hole diameter. Latitude and longitude lines of two adjacent net holes form a prism. The edge face of each prism faces the loudspeaker diaphragm. The edge, which is the closest to the loudspeaker diaphragm, of each prism and two sides form an acute angle. According to the utility model, sound wave barriers of the metal punching net can be avoided or reduced; the sounding effect of the loudspeaker diaphragm can be protected; and the sound quality of a loudspeaker is improved.

Description

A kind of speaker of voice box guard shield punching net

Technical field

The utility model relates to electroacoustic techniques field, relates in particular to a kind of speaker of voice box guard shield punching net.

Background technology

The current wire netting that is widely used in speaker of voice box guard shield mainly contains two kinds, and one is mesh grid, and one is punching net.Metal net is formed by metal wire knitted, and its advantage is that its graticule towards diaphragm of loudspeaker one side is on-plane surface appearance, and sound wave is not had or seldom have the impact of obstruction; The advantage of punching net is according to the appearance arbitrarily of various appearance requirement, so current most of audio amplifier metal net mask all adopts punching net form, but there is very important acoustical flaw in current punching net, be exactly it be plane appearance towards graticule of diaphragm of loudspeaker one side, sound wave is had to the impact of obstruction.Plane because the graticule of the current punching net back side (towards the one side of loud speaker) is the same with its front, the sound wave of some upper frequencies is because of straightline propagation principle, send the obstruction that can be subject to guard graticule plane from the diaphragm of loudspeaker, via wire netting longitude and latitude plane reflection power or the impact of counteracting power, the diaphragm of loudspeaker just can not proper motion, thereby the performance of loud speaker and quality all can be adversely affected.

Distance with regard to Metal-Piercing net and the diaphragm of loudspeaker is seen, if the Metal-Piercing net behind one side of the diaphragm of loudspeaker (towards) longitude and latitude is a plane, in the time of this plan range diaphragm of loudspeaker 17mm～68mm, 5000Hz(wavelength 0.068m)～20000Hz(wavelength 0.017m) frequency sound wave will be subject to stopping of Metal-Piercing net longitude and latitude plane, the vibrating diaphragm vibration particle in linear relation with the plane stopping will be cancelled, offset the impact of power, vibrating diaphragm can not keep normal motion yet; And in the time that wave length of sound is less than the longitude and latitude plane of Metal-Piercing net behind and the distance of the diaphragm of loudspeaker, sound wave can be reflected back the particle that the diaphragm of loudspeaker is corresponding because of the obstruction of this plane, participate in diaphragm of loudspeaker motion, loud speaker proper motion will be subject to the impact of reflectivity again.The counteracting power or the reflectivity that are formed by the longitude and latitude planar section at the Metal-Piercing net back side, be all the destructive power that affects diaphragm of loudspeaker proper motion, and diaphragm of loudspeaker sounding performance and quality are all done to immeasurable harm.

Utility model content

Problem to be solved in the utility model is that current speaker of voice box punching net exists sound wave to hinder; the defect of lower tone, provides a kind of speaker of voice box guard shield punching net, and it can be avoided or reduce Metal-Piercing net sound wave and hinder; protection diaphragm of loudspeaker sounding effect, improves loud speaker tonequality.

For achieving the above object, the utility model embodiment provides a kind of speaker of voice box guard shield punching net, comprise wire netting, on wire netting, there is mesh, described mesh dorsad each graticule of the one side of the diaphragm of loudspeaker is plane appearance, is on-plane surface appearance towards each graticule of the one side of the diaphragm of loudspeaker.

Preferably, the direction that described mesh increases to aperture towards each graticule of the one side of the diaphragm of loudspeaker tilts, the graticule composition triangular prism of two adjacent mesh, and the faceted pebble of triangular prism is to the diaphragm of loudspeaker.

Preferably, the rib of the close diaphragm of loudspeaker and the angle of two sides are acute angle to described triangular prism.

Speaker of voice box guard shield described in the utility model punching, beneficial effect is compared to existing technology:

Metal-Piercing net is carried out to secondary operations; the graticule of mesh is processed into Rhizoma Sparganii type; both kept to a certain extent the mechanical strength of metal graticule; the diaphragm of loudspeaker is not lost to defencive function; utilize sound deflection principle that this metal graticule is acutangulated towards diaphragm of loudspeaker one side simultaneously; the inclined-plane refraction producing along acute angle about frequency sound wave is propagated; be unlikely to this sound wave and be reflected back toward vibrating diaphragm, thereby avoid or reduce the harm to diaphragm of loudspeaker sounding causing because of Metal-Piercing net acoustic resistance defect.

Brief description of the drawings

Accompanying drawing 1 is the structure schematic diagram of the utility model embodiment speaker of voice box guard shield punching;

Accompanying drawing 2 is the Facad structure schematic diagram of the utility model embodiment speaker of voice box guard shield punching;

Accompanying drawing 3 is traditional speaker of voice box guard shield punching and the schematic diagram of diaphragm of loudspeaker sounding relation;

Accompanying drawing 4 is the schematic diagram of the guard shield punching of the utility model embodiment speaker of voice box and diaphragm of loudspeaker sounding relation.

Embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is described in further detail.

Embodiment:

Speaker of voice box guard shield punching net described in the utility model, is that existing traditional Metal-Piercing net is carried out to secondary operations, i.e. deburring processing, is processed into non-planar shaped by the one side of mesh.

With reference to Fig. 1,2, speaker of voice box guard shield punching net described in the utility model, comprises wire netting 1, has mesh 2 on wire netting 1, mesh 2 dorsad each graticule 4 of the one side of the diaphragm of loudspeaker 3 is plane appearance, is on-plane surface appearance towards each graticule 4 of the one side of the diaphragm of loudspeaker 3.

Above-mentioned on-plane surface appearance is: the direction that mesh 2 increases to aperture towards each graticule 4 of the one side of the diaphragm of loudspeaker 3 tilts, and the graticule 4 of two adjacent mesh 2 is adjacent, and forms a triangular prism, and the faceted pebble of triangular prism is to the diaphragm of loudspeaker 3.A rib 5 of the most close diaphragm of loudspeaker 3 of this triangular prism is preferably acute angle with the angle of two sides.

With reference to Fig. 3, traditional Metal-Piercing net, because being planar shaped, in the time running into the sound wave of diaphragm of loudspeaker transmitting, can directly be reflected back the diaphragm of loudspeaker by this sound wave, and carry out back reflective, thereby affect the proper motion of the diaphragm of loudspeaker.

With reference to Fig. 4, Metal-Piercing net described in the utility model, it is a three-dimensional surface in the face of the diaphragm of loudspeaker,

In the time running into diaphragm of loudspeaker transmitting sound wave, can direct sound waves reflect to the B direction of arrow according to refraction principle A arrow from way, by sound wave, it draws obstacle, and can not allow vibrating diaphragm transmitting acoustic reflection return vibrating diaphragm.

The above is preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection range of the present utility model.

Claims

1. a speaker of voice box guard shield punching net, comprise wire netting (1), on wire netting (1), there is mesh (2), it is characterized in that: described mesh (2) dorsad each graticule (4) of the one side of the diaphragm of loudspeaker (3) for plane appearance, is on-plane surface appearance towards each graticule (4) of the one side of the diaphragm of loudspeaker (3).

2. speaker of voice box guard shield punching net according to claim 1, it is characterized in that: the direction that described mesh (2) increases to aperture towards each graticule (4) of the one side of the diaphragm of loudspeaker (3) tilts, graticule (4) the composition triangular prism of adjacent two mesh (2), the faceted pebble of triangular prism is to the diaphragm of loudspeaker (3).

3. speaker of voice box guard shield punching net according to claim 2, is characterized in that: the rib (5) of the most close diaphragm of loudspeaker of described triangular prism (3) is acute angle with the angle of two sides.