CN221930105U - Car speakers - Google Patents

Abstract

The utility model relates to a car speaker, including an auxiliary control unit, a magnetic control unit and a vibration sound unit; the characteristic is that the auxiliary control unit includes a sound box, a controller and a bottom plate, the magnetic control unit is arranged in the sound box, the vibration sound unit is arranged above the magnetic control unit and passes through the cover of the sound box, and the bottom plate is fixed to the outer bottom surface of the sound box. Compared with the prior art, the bottom of the sound box is also provided with a bottom plate, which is fixed to the outer surface of the sound box, and can reinforce the installation box and increase the quality of the sound box, thereby enhancing the damping and rigidity of the sound box, reducing the distortion of the sound box and reducing the resonance phenomenon, thereby improving the bass quality.

Description

Car speakers

Technical Field

The utility model relates to the technical field of sound boxes, in particular to a car speaker.

Background Art

A speaker is a transducer device that converts electrical signals into sound signals. The speaker is the weakest component in audio equipment, but it is also the most important component for sound effects. There are many types of speakers, which can be divided into electric, electrostatic, electromagnetic, piezoelectric, etc. according to their transducer principles. Among them, the electric speaker, also known as the dynamic speaker, is the most widely used speaker.

At present, most car speakers also use electric speakers. Please refer to Figure 1. The car speakers in the prior art usually install the sound-generating component in a sound box, which is fixed to the installation position of the car through the sound box. The sound-generating component includes a magnetic control unit and a vibration sound-generating unit. The magnetic control unit provides a magnetic field for the vibration sound-generating unit. After the audio current is passed, the vibration sound-generating unit generates vibrations to cause the air to vibrate, thereby producing sound. However, when this car speaker plays bass, the bass playing effect is poor.

Utility Model Content

Based on this, the purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide a speaker.

The utility model is realized through the following technical scheme: a car speaker, comprising an auxiliary control unit, a magnetic control unit and a vibration sound unit; characterized in that: the auxiliary control unit comprises a sound box, a controller and a bottom plate, the magnetic control unit is arranged in the sound box, the vibration sound unit is arranged above the magnetic control unit and passes through the cover of the sound box, and the bottom plate is fixed to the outer bottom surface of the sound box.

Compared with the existing technology, the bottom of the speaker is also provided with a bottom plate, which is fixed to the outer surface of the speaker, which can reinforce the speaker and increase the mass of the speaker, thereby enhancing the damping and rigidity of the speaker, reducing the distortion of the speaker and reducing the resonance phenomenon, thereby improving the bass quality.

In one of the embodiments, the speaker box is a metal heat sink.

In one embodiment, the speaker box body is an integrated aluminum box, an integrated iron box, or an integrated stainless steel box; the bottom plate is an aluminum plate, an iron plate, or a stainless steel plate.

In one of the embodiments, the speaker further includes an EVA board, and the EVA board is arranged between the bottom and the bottom plate of the speaker box.

In one embodiment, the auxiliary control unit also includes a controller, which includes a control circuit arranged in the box and a control panel electrically connected to the control circuit, and the control panel is embedded in and protrudes from a side of the box, and the control panel controls the vibration sound unit to make sound through the control circuit.

In one embodiment, the magnetic control unit includes a T-iron and a magnetic steel, the T-iron includes a disc and a cylinder, the inner bottom surface of the box is provided with a recess, the disc is installed in the recess, the cylinder is fixed on the disc, the magnetic steel is in a circular ring shape, which is sleeved on the cylinder of the T-iron and has a gap between the magnetic steel and the cylinder.

In one of the embodiments, the magnetron unit further includes a washer, which is in a circular shape and is disposed on the magnetic steel, and there is a gap between the washer and the column of the T-iron.

In one embodiment, the vibration sound-generating unit includes a voice coil, a spring and a cone. The voice coil is partially embedded in the gap between the washer and the magnetic steel and the column of the T-iron and can move up and down along the column. The spring is an annular structure and is sleeved on the exposed end of the voice coil. The cone includes a folded ring and a diaphragm. The folded ring is an annular structure formed by an arc-shaped bent edge. The diaphragm is a trumpet-shaped structure. One end of the diaphragm is connected to the inner edge of the folded ring, and the other end passes through the opening of the cover body and can vibrate in contact with the top of the voice coil. The outer edge of the folded ring is fixed to the upper surface of the cover body.

In one of the embodiments, the vibration sound generating unit further includes a dust cover, and the dust cover is arranged at the opening formed by the diaphragm.

In one of the embodiments, the vibration sound-generating unit further includes a speaker mesh, and the speaker mesh cover is arranged at the opening of the cover body.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a prior art speaker;

FIG2 is a front view of an embodiment of a loudspeaker of the utility model;

FIG3 is a schematic diagram of the bottom structure of an embodiment of the loudspeaker of the utility model;

FIG4 is an exploded view of an embodiment of a loudspeaker of the present invention;

FIG. 5 is a schematic structural diagram of a radiator housing of an embodiment of the loudspeaker of the present invention.

DETAILED DESCRIPTION

In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

After observing and analyzing the existing automobile speakers in the bass pronunciation state, the utility model finds that, in the bass pronunciation state, the vibration of the speaker will cause resonance of its internal components, thereby reducing the controllability of the speaker in the bass pronunciation state, resulting in poor bass effect.

Based on this, the utility model studies setting a resonance-reducing structure in the speaker box. Further, it is found in the study that the resonance of the box accounts for a large proportion of the influence, so further research is conducted to change the material of the box to avoid the influence of the vibration frequency of the speaker.

The technical solution of the present application is described in detail below with reference to specific embodiments.

Please refer to Figures 1 and 2. The automobile speaker of the utility model includes an auxiliary control unit, a magnetic control unit and a vibration sound unit. The auxiliary control unit provides an installation space, the magnetic control unit is arranged in the installation space of the auxiliary control unit, the vibration sound unit is fixedly connected to the auxiliary control unit, the magnetic control unit provides a magnetic field, and after the audio current is passed, the vibration sound unit generates vibration to cause the air to vibrate, thereby generating sound.

The auxiliary control unit includes a speaker 11, a controller 12, an EVA board 13 and a bottom plate 14. The speaker 11 is a metal heat dissipation box, including a metal box 112 and a metal cover 114 covered on the box 112, wherein the box 112 is an integrated rectangular parallelepiped structure made of aluminum in this embodiment. The controller 12 includes a control circuit arranged in the box 112 and a control panel electrically connected to the control circuit, and the control panel is embedded and protrudes from one side of the box 112. The EVA board 13 covers the outer bottom surface of the bottom of the box 112, and the bottom plate 14 covers the EVA board 13. The bottom plate is an iron plate. The EVA board 13 is arranged in the middle of the shell 112 and the bottom plate 14, and can play the role of a seal and a buffer pad. The EVA board 13 and the bottom plate 14 are respectively provided with 6 through holes, which are fixedly connected to the bottom of the shell 112 by screws.

The magnetic control unit includes a T-iron 31, a magnetic steel 32 and a washer 33. The T-iron 31 includes a disc and a cylinder. The inner bottom surface of the box 112 is provided with a recess, and the disc is installed in the recess; the cylinder is fixed on the disc. The magnetic steel 32 is annular, which is sleeved on the cylinder of the T-iron 31, and there is a gap between the magnetic steel 32 and the cylinder to form a uniform magnetic flux loop. The washer 33 is also annular, which is arranged on the magnetic steel 32 for magnetic conduction, and together with the magnetic steel 32, it forms a magnetic flux loop, and there is also a gap between the washer 33 and the cylinder.

The vibration sound generating unit includes a voice coil 21, a spring 22, a sound basin 23, a dust cover 24 and a speaker net 25. The voice coil 21 is partially embedded in the gap between the washer 33 and the magnetic steel 32 and the column and can move up and down along the column. The spring 22 is an annular structure, which is sleeved on the exposed end of the voice coil 21 to keep the voice coil 21 in the correct position and stably reciprocate along the axial direction. The sound basin 23 includes a folding ring and a diaphragm. The folding ring is an annular structure formed by an arc-shaped curved edge. The diaphragm is a trumpet-shaped structure. One end of the diaphragm is connected to the inner edge of the folding ring, and the other end passes through the through hole of the cover body 114, and can be in vibration contact with the top of the voice coil 21; the outer edge of the folding ring is fixed on the upper surface of the cover body 114. The dust cover 24 is set at the opening formed by the diaphragm 234, which can prevent dust and debris from entering the magnetic circuit system and avoid affecting the sound quality of the car speaker. The speaker mesh 25 is covered at the opening of the cover 114, which can not only isolate dust but also transmit and filter sound.

In the car speaker, the magnetic control unit generates a constant magnetic field with constant size and direction. When the controller 12 passes current to the voice coil 21, the coil of the voice coil 21 generates a magnetic field. Due to the change of the audio current, the size and direction of the magnetic field generated by the voice coil 21 are constantly changing. Since the voice coil 21 is partially embedded in the magnetic control unit, the changing magnetic field generated by the voice coil 21 and the constant magnetic field of the magnetic control unit will interact with each other, causing the voice coil 21 to move up and down in the annular gap of the magnetic control unit, thereby driving the vibration membrane 234 to vibrate, thereby producing sound.

In the present application, by adding a bottom plate outside the bottom of the speaker, the overall center of gravity is changed and the damping and rigidity of the speaker are enhanced, which can reduce the distortion of the speaker and reduce the low-frequency resonance phenomenon, thereby improving the bass quality. Furthermore, the speaker of the present application adopts metal material, which can increase the weight of the speaker compared with plastic, thereby further reducing the resonance at low frequency. Moreover, the metal box can also have the effect of heat dissipation while reducing shock. In addition, the speaker and the bottom plate are both made of metal, which can make the bass more solid.

The present application may have a variety of variant implementations. For example, the speaker box may be an integrated iron box or an integrated stainless steel box, and the bottom plate may be an aluminum plate or a stainless steel plate.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims (10)

1. A car speaker, comprising an auxiliary control unit, a magnetic control unit and a vibration sound unit; characterized in that: the auxiliary control unit comprises a sound box, a controller and a bottom plate, the magnetic control unit is arranged in the sound box, the vibration sound unit is arranged above the magnetic control unit and passes through the cover of the sound box, and the bottom plate is fixed to the outer bottom surface of the sound box. 2. The car speaker according to claim 1, wherein the speaker box is a metal heat dissipation box. 3. The car speaker according to claim 2, characterized in that the box body of the speaker is an integrated aluminum box, an integrated iron box, or an integrated stainless steel box; and the bottom plate is an aluminum plate, an iron plate, or a stainless steel plate. 4. The car speaker according to claim 3 is characterized in that the speaker also includes an EVA board, and the EVA board is arranged between the bottom of the sound box and the bottom plate. 5. The car speaker according to claim 4 is characterized in that: the auxiliary control unit also includes a controller, the controller includes a control circuit arranged in the box body and a control panel electrically connected to the control circuit, the control panel is embedded in and protrudes from one side of the box body, and the control panel controls the vibration sound-generating unit to make sound through the control circuit. 6. The car speaker according to claim 5 is characterized in that: the magnetic control unit includes a T-iron and a magnetic steel, the T-iron includes a disc and a cylinder, the inner bottom surface of the box body is provided with a recess, the disc is installed in the recess, the cylinder is fixed on the disc, and the magnetic steel is in a circular ring shape, which is sleeved on the cylinder of the T-iron and has a gap between the magnetic steel and the cylinder. 7. The car speaker according to claim 6, characterized in that: the magnetic control unit further comprises a washer, the washer is in a circular ring shape and is arranged on the magnetic steel, and there is a gap between the washer and the column of the T-iron. 8. The car speaker according to claim 7 is characterized in that: the vibration sound-generating unit includes a voice coil, a spring and a sound cone, the voice coil is partially embedded in the gap between the washer and the magnetic steel and the column of the T-iron and can move up and down along the column, the spring is an annular structure, which is sleeved on the exposed end of the voice coil, the sound cone includes a folded ring and a diaphragm, the folded ring is an annular structure formed by an arc-shaped bent edge, the diaphragm is a trumpet-shaped structure, one end of the diaphragm is connected to the inner edge of the folded ring, and the other end passes through the opening of the cover body and can vibrate in contact with the top of the voice coil, and the outer edge of the folded ring is fixed to the upper surface of the cover body. 9 . The car speaker according to claim 8 , wherein the vibration sound generating unit further comprises a dust cover, and the dust cover is arranged at the opening formed by the diaphragm. 10. The car speaker according to claim 8, characterized in that the vibration sound-generating unit further comprises a speaker mesh, and the speaker mesh cover is arranged at the opening of the cover body.