Noise suppression device

A noise suppression device includes a housing having a chamber, a tube mounted in the chamber of the housing, a mineral layer mounted in the chamber of the housing, an absorbing layer mounted in the tube, a cylinder mounted in the absorbing layer, and a cover mounted on an opened end of the housing to close the housing. Thus, the noise suppression device has an excellent grounding effect by provision of the cylinder which is made of copper, so that when the noise suppression device is connected with the sound, the sound is grounded and can release the induced charges produced by various radiation and electromagnetic induction. In addition, the voltage noise produced in the acoustic signals of the sound is oscillated in the noise suppression device, so as to achieve the purpose of eliminating the voltage noise.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a suppression device and, more particularly, to a noise suppression device to eliminate noise (or glitch) produced in an electric appliance, such as a sound and the like.

2. Description of the Related Art

An electric appliance, such as a sound, television, monitor, video player and the like, includes an electrical signal cable to execute the purpose of transmission and indication. The electrical signal cable is easily affected by various noises, such as a grounding circuit noise, an electromagnetic radiation interference noise, and a power supply interference noise. Concerning the grounding circuit noise, the sound system needs a greater grounding effect (the grounding resistance has to be smaller than four ohms) to release the induced charges produced by various radiation and electromagnetic induction, to prevent the voltage noise from overlapping the acoustic signals. Concerning the electromagnetic radiation interference noise, the environmental electromagnetic wave interference (such as the high frequency electromagnetic radiation interference from the cell phone) is mixed with the transmission signal through the acoustic transmission cable to form a noise. Concerning the power supply interference noise, different facilities, such as optical regulating devices, air-conditioning devices, motors and the like, merge at the common electrical grid to produce peak impulses, surge currents and voltages of different frequency in the power line, which will pass through the power line into the power supply of the sound, thereby forming a noise in the sound. For solving the above-mentioned noise problems, the power line is processed by a special shelter treatment to eliminate the electronic radiation interference efficiently. The facilities with serious magnetic leakage are enclosed by an iron cabinet to eliminate the magnetic radiation. A purified alternating power supply can efficiently filter and eliminate the interference signals in the power line.

BRIEF SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a noise suppression device having an excellent grounding effect to release the induced charges produced by the sound.

In accordance with the present invention, there is provided a noise suppression device comprising a housing having an interior provided with a chamber, a tube mounted in the chamber of the housing, a mineral layer mounted in the chamber of the housing, an absorbing layer mounted in the tube, a cylinder mounted in the absorbing layer, and a cover mounted on an opened end of the housing to close the housing. The cylinder has an outer periphery provided with an electroplated layer. The cylinder has an end provided with a connecting portion. The absorbing layer is mounted on the outer periphery of the cylinder. The tube is mounted on an outer periphery of the absorbing layer. The chamber of the housing is mounted on an outer periphery of the tube. The cover is provided with an opening connected to the connecting portion of the cylinder.

Preferably, the cylinder has a side provided with at least one fixing portion connected to the connecting portion.

Preferably, the cylinder is made of copper.

Preferably, the electroplated layer of the cylinder is made of silver.

Preferably, the absorbing layer is made of absorbent material that absorbs and prevents high-frequency and low-frequency waves.

Preferably, the tube is made of aluminum.

Preferably, the chamber of the housing has a peripheral wall provided with a plurality of arcuate channels surrounding and abutting the outer periphery of the tube to fix the tube.

Preferably, the housing has an outer periphery provided with an antiskid layer.

According to the primary advantage of the present invention, the noise suppression device has an excellent grounding effect by provision of the cylinder which is made of copper, so that when the noise suppression device is connected with the sound, the sound is grounded and can discharge and release the induced charges produced by various radiation and electromagnetic induction.

According to another advantage of the present invention, the absorbing layer absorbs high-frequency and low-frequency waves, while the mineral layer is located between the housing and the tube, so that the voltage noise produced in the acoustic signals of the sound is oscillated in the noise suppression device, so as to achieve the purpose of eliminating the voltage noise.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings and initially toFIGS. 1-4, a noise suppression device1in accordance with the preferred embodiment of the present invention comprises a housing14having an interior provided with a chamber141, a tube13mounted in the chamber141of the housing14, a mineral layer142mounted in the chamber141of the housing14, an absorbing layer12mounted in the tube13, a cylinder11mounted in the absorbing layer12, and a cover15mounted on an opened end of the housing14to close the housing14.

The cylinder11is made of copper and has an outer periphery provided with an electroplated layer113. The electroplated layer113of the cylinder11is made of silver. The cylinder11has an end provided with a connecting portion111. The connecting portion111of the cylinder11has a recessed shape. The cylinder11has a side provided with at least one fixing portion112connected to the connecting portion111. The fixing portion112of the cylinder11has a recessed shape. Preferably, the cylinder11is provided with two parallel fixing portions112each connected to the connecting portion111.

The absorbing layer12has a hollow shape. The absorbing layer12is mounted on the outer periphery of the cylinder11. Preferably, the absorbing layer12is made of absorbent material that absorbs and prevents high-frequency and low-frequency waves.

The tube13is made of aluminum and has a hollow shape. The tube13is mounted on an outer periphery of the absorbing layer12.

The housing14has an outer periphery provided with an antiskid layer144which has a projecting or granular shape. The chamber141of the housing14has a recessed shape. The chamber141of the housing14is mounted on an outer periphery of the tube13and has a peripheral wall provided with a plurality of arcuate channels143surrounding and abutting the outer periphery of the tube13to fix the tube13. Preferably, the arcuate channels143of the housing14are arranged in an annular manner. The mineral layer142is located between the housing14and the tube13.

The cover15is provided with an opening151connected to the connecting portion111of the cylinder11. The opening151is extended through a whole thickness of the cover15.

In operation, referring toFIG. 5with reference toFIGS. 1-4, the noise suppression device1is connected with a sound2which includes a negative electrode21and a separating line212. The negative electrode21has a pressing terminal211. The separating line212has a first end affixed to the negative electrode21by operation of the pressing terminal211and a second end affixed to the noise suppression device1. The second end of the separating line212is extended through the opening151of the cover15into the connecting portion111of the cylinder11and is connected with the connecting portion111of the cylinder11. A fastening member is extended through the fixing portion112of the cylinder11and presses the second end of the separating line212to affix the second end of the separating line212to the cylinder11. In such a manner, the cylinder11is made of copper which has a small resistance coefficient to ground the sound2, so that the sound2can discharge and release the induced charges produced by various radiation and electromagnetic induction. In addition, the absorbing layer12is made of absorbent material that absorbs and prevents high-frequency and low-frequency waves, while the mineral layer142is located between the housing14and the tube13, so that the voltage noise produced by the sound2is oscillated in the noise suppression device1, so as to achieve the purpose of eliminating the voltage noise.

Alternatively, referring toFIG. 6with reference toFIGS. 1-4, the sound2further includes a power supply line22which has a negative electrode221connected to a socket23. The noise suppression device1is connected with the negative electrode221of the power supply line22of the sound2.

Accordingly, the noise suppression device1has an excellent grounding effect by provision of the cylinder11which is made of copper, so that when the noise suppression device1is connected with the sound2, the sound2is grounded and can discharge and release the induced charges produced by various radiation and electromagnetic induction. In addition, the absorbing layer12absorbs high-frequency and low-frequency waves, while the mineral layer142is located between the housing14and the tube13, so that the voltage noise produced in the acoustic signals of the sound2is oscillated in the noise suppression device1, so as to achieve the purpose of eliminating the voltage noise.