Vehicle-mounted subwoofer

Abstract

The present invention relates to a vehicle-mounted subwoofer, comprising: a sound box; a magnetic control assembly, which is arranged in the sound box; a vibration sound-producing assembly, which generates vibrations and produces sound under the action of a magnetic field of the magnetic control assembly; and an equalizer, which is arranged in the sound box, wherein the equalizer comprises a recessed cavity portion and a side plate, the side plate being a flat plate and being provided with an opening in the middle, the side plate being sleeved on an open end of the recessed cavity portion, and the opening of the side plate being connected to an outer side face of the recessed cavity portion; and a gap is formed between a bottom face of the recessed cavity portion and the sound box to form a sound cavity. Compared with the prior art, the present invention adds the equalizer to the vehicle-mounted subwoofer, thereby increasing the space for air flow and achieving the purpose of enhancing a low-frequency effect.

Description

A car-mounted subwoofer Technical Field

[0001] The present invention relates to the technical field of sound boxes, in particular to a vehicle-mounted subwoofer. Background Art

[0002] A car subwoofer is a crucial component of a vehicle's audio system. Also known as a bass speaker, a subwoofer produces lower-frequency sounds (typically in the 20-200Hz range), adding depth and impact to music. Therefore, a car subwoofer has become an essential option for many car audio upgrades.

[0003] A subwoofer primarily consists of an auxiliary control unit and a speaker unit. The auxiliary control unit provides mounting space for the speaker unit, while the subwoofer's sound production primarily relies on the speaker unit. The speaker unit typically includes a magnetic control component and a vibration sound-generating component. The magnetic control component provides a magnetic field. When an audio current is applied, the vibration sound-generating component vibrates, causing air vibrations and, in turn, producing sound. This conversion of electrical energy into sound energy enables the subwoofer to produce strong and deep bass.

[0004] However, when existing car speakers play bass, the bass playing effect is poor.

[0005] Summary of the Invention

[0006] Based on this, the purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and provide a vehicle-mounted subwoofer.

[0007] A vehicle-mounted subwoofer, comprising:

[0008] speakers;

[0009] A magnetic control component is arranged in the speaker;

[0010] A vibration sound-generating component, which generates vibration and sounds under the action of the magnetic field of the magnetic control component;

[0011] A balancer is arranged in the speaker, and the balancer includes a concave cavity and a side plate. The side plate is a flat plate with an opening in the middle. The side plate is sleeved on the open end of the concave cavity, and the opening of the side plate is connected to the outer side surface of the concave cavity. There is a gap between the bottom surface of the concave cavity and the speaker to form a sound cavity.

[0012] Compared with the existing technology, the present invention adds a balancer in the speaker. The balancer has a concave cavity, and a sound cavity is formed between the balancer and the speaker, which increases the space for air flow and makes the bass dynamic more complete, thereby achieving a looser and fuller low-frequency effect. At the same time, the vibrating sound-emitting unit drives the vibration of the balancer, so that the balancer can reflect sound, which helps to balance the bass movement up and down.

[0013] In one embodiment, the concave cavity portion includes an annular inner side surface, an annular outer side surface surrounding the inner side surface and opposite to the inner side surface, and a bottom surface connecting the inner side surface and the outer side surface to form an annular groove; the balancer also includes a middle plate, and the middle plate cover is arranged on the inner side surface edge of the open end of the concave cavity portion.

[0014] In one embodiment, the bottom surface of the concave cavity is arc-shaped.

[0015] In one embodiment, the speaker box has a rectangular parallelepiped structure, and the bottom surface of the concave cavity of the balancer and one side of the box form a sound cavity.

[0016] In one embodiment, the speaker further comprises a bottom plate, the bottom plate covering the outer surface or the inner surface of the bottom of the speaker box;

[0017] The speaker box is an iron box, and the bottom plate is an aluminum plate or a stainless steel plate; or, the speaker box is an aluminum box, and the bottom plate is an iron plate or a stainless steel plate; or, the speaker box is a stainless steel box, and the bottom plate is an aluminum plate or an iron plate.

[0018] In one embodiment, an EVA board is further included, and the EVA board is arranged between the bottom surface and the bottom plate of the speaker box.

[0019] In one embodiment, the speaker box has a circular structure, and the bottom surface of the concave cavity portion of the balancer and the inner surface of half the circumference of the box form a sound cavity.

[0020] In one embodiment, a support assembly is further included, wherein the support assembly includes a plurality of sealing plates, wherein the sealing plates and the inner surface of the box form a cavity with a top opening, and the side plates of the balancer are fixed to the top opening of the cavity.

[0021] In one embodiment, the speaker further comprises a bottom cover, wherein the bottom cover, the speaker body and the speaker cover form an installation space for the magnetic control component, the vibration sound generating component and the balancer;

[0022] The box body of the speaker is made of iron, and the bottom cover is made of aluminum or stainless steel; the box body of the speaker is made of aluminum, and the bottom cover is made of iron or stainless steel; the box body of the speaker is made of stainless steel, and the bottom cover is made of aluminum or iron. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a front view of a first embodiment of a vehicle-mounted subwoofer according to the present invention;

[0024] FIG2 is a schematic diagram of the bottom structure of a vehicle-mounted subwoofer according to a first embodiment of the present invention;

[0025] FIG3 is an exploded view of a first embodiment of a vehicle-mounted subwoofer according to the present invention;

[0026] FIG4 is a schematic cross-sectional view of a first embodiment of a vehicle-mounted subwoofer according to the present invention;

[0027] FIG5 is a front view of an embodiment of a balancer in a vehicle-mounted subwoofer of the present invention;

[0028] FIG6 is a front view of another embodiment of a balancer in a vehicle-mounted subwoofer of the present invention;

[0029] FIG7 is an exploded view of an embodiment of a bottom plate of a vehicle-mounted subwoofer according to the present invention;

[0030] FIG8 is a schematic structural diagram of an embodiment of a bottom plate of a vehicle-mounted subwoofer according to the present invention;

[0031] FIG9 is a schematic structural diagram of a second embodiment of a vehicle-mounted subwoofer according to the present invention;

[0032] FIG10 is a schematic cross-sectional view of a second embodiment of a vehicle-mounted subwoofer according to the present invention;

[0033] FIG11 is a schematic diagram of the vehicle-mounted subwoofer without a cover according to the second embodiment of the present invention. DETAILED DESCRIPTION

[0034] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0035] In order to improve the bass effect, the present invention observed and analyzed the pronunciation state of the car subwoofer and found that the car subwoofer requires a sound cavity of a certain volume to move a large number of air molecules per unit time to produce strong bass. However, the car subwoofer is generally installed under the seat or on the spare tire, and the space is small. As a result, the bass airflow quickly contacts the speaker during movement and then rebounds upward, resulting in incomplete bass dive and affecting the bass effect.

[0036] Based on this, the present invention adds a balancer to the car subwoofer, thereby increasing the airflow space and achieving the purpose of enhancing low-frequency effects. Furthermore, the present invention also adds a bottom cover made of a different material to the bottom of the speaker, either inside or outside. This can simultaneously change the overall center of gravity and enhance the damping and rigidity of the speaker, thereby reducing speaker distortion and low-frequency resonance, thereby improving bass quality.

[0037] The technical solution of this application is described in detail below with reference to specific embodiments.

[0038] Example 1

[0039] 1-4 , the vehicle-mounted subwoofer of the first embodiment includes an auxiliary control unit, a speaker unit, and a balance unit. The auxiliary control unit provides an installation space, and the speaker unit and the balance unit are disposed within the installation space of the auxiliary control unit.

[0040] The auxiliary control unit includes a speaker 11, a controller 12, an EVA board 13 and a bottom cover 14. The speaker 11 is a metal heat dissipation box, including a metal box body 112 and a metal cover body 114 covering the box body 112, wherein the box body 112 is an integrated rectangular parallelepiped structure made of aluminum in this embodiment. The controller 12 includes a control circuit arranged in the box body 112 and a control panel electrically connected to the control circuit, and the control panel is embedded in and protrudes from one side of the box body 112. The EVA board 13 covers the outer bottom surface of the bottom of the box body 112, and the bottom cover 14 covers the EVA board 13. In this embodiment, the bottom cover 14 is an iron plate. The EVA board 13 is arranged between the box body 112 and the bottom cover 14, and can play the role of sealing and buffering pad. The EVA board 13 and the bottom cover 14 are respectively provided with 6 through holes, which are fixedly connected to the bottom of the box body 112 by screws.

[0041] The speaker unit includes a magnetic control assembly and a vibration sound-generating assembly. The magnetic control assembly includes a T-iron 21, a magnet 22, and a washer 23. The vibration sound-generating assembly includes a voice coil 24, a damper 25, a cone 26, a dust cover 27, and a speaker grille 28. The magnetic control assembly is disposed within the mounting space of the auxiliary control unit, and the vibration sound-generating assembly is fixedly connected to the auxiliary control unit. The magnetic control assembly provides a magnetic field. When an audio current is applied, the vibration sound-generating assembly vibrates, causing air vibration, thereby producing sound.

[0042] In the magnetron assembly, the T-iron 21 comprises a disc and a cylinder. The inner bottom surface of the housing 112 is provided with a recess, into which the disc is mounted; the cylinder is secured to the disc. The magnetic steel 22 is annular and fits over the cylinder of the T-iron 21, with a gap between it and the cylinder to form a uniform magnetic flux circuit. The washer 23, also annular, is mounted on the magnetic steel 22 to conduct magnetic flux and, together with the magnetic steel 22, forms a magnetic flux circuit. A gap is also formed between the washer 23 and the cylinder.

[0043] In the vibration sound-generating assembly, the voice coil 24 is partially embedded in the gap between the washer 23, the magnet 22, and the column, and can move up and down along the column. The damper 25 is an annular structure that fits over the exposed end of the voice coil 24 to maintain the voice coil 24 in the correct position and allow for stable axial reciprocating motion. The cone 26 includes a folded ring and a diaphragm. The folded ring is an annular structure formed by an arc-shaped bend. 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 through hole of the cover 114, allowing for vibrational contact with the top of the voice coil 24. The outer edge of the folded ring is fixed to the upper surface of the cover 114. The dust cover 27 is installed over the opening formed by the diaphragm to prevent dust and debris from entering the magnetic circuit system and thus affecting the sound quality of the car speaker. The speaker mesh 28 is installed over the opening of the cover 114 to not only isolate dust but also transmit and filter sound.

[0044] The balancing unit includes a balancer 31 and a support assembly 32. Referring to Figure 5, the balancer 31 includes a side plate 311, a concave cavity portion 312, and a middle plate 313. The side plate 311 is a flat plate with an elliptical opening in the middle. The concave cavity portion 312 includes an annular inner side surface 3121, an annular outer side surface 3122 surrounding the inner side surface and facing the inner side surface, and a bottom surface 3123 connecting the inner side surface and the outer side surface to form an annular groove. The bottom surface 3123 of the concave cavity portion 312 can be arc-shaped or other shapes such as square, which is not limited by the present invention. The middle plate 313 is an elliptical plate body, and the middle plate 313 covers the edge of the inner side surface 3121 at the open end of the concave cavity portion 312. In this embodiment, the support assembly 32 is a rectangular structure with open ends composed of multiple sealing plates. One end is fixedly connected to the inner surface of the box 112, and the other end is fixedly connected to the side plate 311 of the balancer 31, so that a sound cavity is formed between the bottom surface 3123 of the concave cavity 312 of the balancer 31, the side plate 311 and the box 112, as shown in Figure 4.

[0045] In a car subwoofer, the magnetic control assembly generates a constant magnetic field with constant magnitude and direction. When controller 12 applies current to voice coil 24, the coil of voice coil 24 generates a magnetic field. The magnitude and direction of the magnetic field generated by voice coil 24 continuously change due to changes in the audio current. Because voice coil 24 is partially embedded in the magnetic control assembly, the changing magnetic field generated by voice coil 24 interacts with the constant magnetic field of the magnetic control assembly, causing voice coil 24 to move up and down within the annular gap of the magnetic control assembly, thereby driving the diaphragm to vibrate, thereby producing sound.

[0046] Compared to existing technologies, the present invention incorporates a balancer into the speaker. The balancer has a concave portion, forming a sound cavity between the balancer and the speaker. This increases the space for airflow, allowing for more dynamic bass and achieving a looser, fuller low-frequency effect. Simultaneously, the vibrating sound-generating unit drives the balancer's vibrations, allowing it to reflect sound and help balance the bass movement. Furthermore, by adding a base plate made of a different material to the bottom of the speaker, the overall center of gravity is altered, and the damping and rigidity of the speaker are enhanced. This reduces distortion and low-frequency resonance, thereby improving bass quality.

[0047] The present application can have a variety of modified implementations. For example, the speaker box can be made of iron or stainless steel, and the bottom plate can be made of stainless steel or other metal materials, as long as the material of the speaker box and the bottom cover are different. In addition, the groove of the balancer can also be of other structural forms. As shown in Figure 6, the balancer only includes a side plate and a concave cavity. The concave cavity includes an elliptical side and a bottom surface connected to the bottom of the side. The side plate is sleeved on the open end of the concave cavity, and the opening of the side plate is connected to the side of the concave cavity. As shown in Figures 7-8, the bottom plate 14 can also be set on the inner surface of the bottom of the box body 112 of the speaker 11, which can also change the center of the entire speaker and enhance the damping and rigidity of the speaker, thereby reducing the distortion of the speaker and reducing the low-frequency resonance phenomenon, thereby improving the bass quality.

[0048] Example 2

[0049] Please refer to Figures 9-11. In the vehicle-mounted speaker of the second embodiment, the auxiliary control unit includes a speaker 11', a controller 12', an EVA board 13', a bottom cover and a center column 15'. The speaker 11' includes a box body 112' and a cover body 114' provided on the box body 112'. The box body 112' includes a main body, a platform part and a support part. The main body is a circular shell, the platform part is a circular plate with an opening in the middle, the outer end of the platform part is fixedly connected to the lower end of the main body, and the support part is a hollow column, the upper end of the support part is fixedly connected to the bottom surface of the platform part. The controller 12' includes a control circuit arranged in the box body 112' and a control panel electrically connected to the control circuit, and the control panel is embedded in and protrudes from the upper surface of the upper cover 114'.

[0050] The bottom cover includes a first connecting portion 141', a first inclined portion 142', a second connecting portion 143', a second inclined portion 144' and a positioning plate 145'. One end of the first connecting portion 141' is threadedly connected to the lower end of the support portion of the box body 112', the lower end of the first inclined portion 142' is fixedly connected to the other end of the first connecting portion 141', one end of the second connecting portion 143' is fixedly connected to the upper end of the first inclined portion 142', the lower end of the second inclined portion 144' is fixedly connected to the other end of the second connecting portion 143', the positioning plate 145' is open in the middle, and the outer end of the positioning plate 145' is fixedly connected to the upper end of the second inclined portion 144'. The EVA plate 13' is fixed to the outer bottom surface of the second connecting portion 143' of the bottom cover. The center column 15' is a cylindrical structure with a hollow interior, and the bottom end of the center column 15' is fixed to the positioning plate 145' of the bottom cover.

[0051] The magnetic control assembly includes a T-iron 21', a magnetic steel 22', and a washer 23'. The T-iron 21' includes a hollow cylinder and a disc connected to the upper end of the cylinder. The lower end of the cylinder of the T-iron 21' is fixed to the top of the middle column 16'. The magnetic steel 22' is annular and is mounted on the cylinder of the T-iron 21'. A gap is formed between the magnetic steel 22' and the cylinder to form a uniform magnetic flux circuit. The washer 23' is also annular and is mounted on the magnetic steel 22' to conduct magnetism. Together with the magnetic steel 22', it forms a magnetic flux circuit. A gap is also formed between the washer 23' and the cylinder.

[0052] The vibration sound-generating component includes a voice coil 24', a spring 25', a cone 26' and a speaker 27'. The voice coil 24' is partially embedded in the gap between the washer 23' and the magnetic steel 22' and the column and can move up and down along the column. The spring 25' is an annular structure, which is sleeved on the exposed end of the voice coil 24' to keep the voice coil 24' in the correct position and stably reciprocate axially. The cone 26' includes a diaphragm and folded rings at both ends of the diaphragm. The folded ring is an annular structure formed by an arc-shaped bent edge, wherein the folded ring at one end is fixedly connected to the center column 15', and the folded ring at the other end is fixedly connected to the bottom surface of the platform part of the box 112'. The speaker 27' covers the voice coil 24', the spring 25' and the cone 26', and the lower end of the speaker 27' is fixedly connected to the top of the platform part of the box 112'.

[0053] The balancing unit includes a balancer 31' and a support assembly 32'. The structure of the balancer 31' is identical to that of the first embodiment and will not be further described here. In this embodiment, the support assembly 32' includes multiple sealing plates. These sealing plates, together with the inner surface of the cabinet 112', form a cavity with an open top. The side panels of the balancer 31' are fixed to the top opening of the cavity, forming a sound cavity between the balancer 31' and the cabinet 112'.

[0054] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0055] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A car subwoofer, characterized in that: include: speakers; A magnetic control component is arranged in the speaker; A vibration sound-generating component, which generates vibration and sounds under the action of the magnetic field of the magnetic control component; A balancer is arranged in the speaker, and the balancer includes a concave cavity and a side plate. The side plate is a flat plate with an opening in the middle. The side plate is sleeved on the open end of the concave cavity, and the opening of the side plate is connected to the outer side surface of the concave cavity. There is a gap between the bottom surface of the concave cavity and the speaker to form a sound cavity.

2. The vehicle-mounted subwoofer according to claim 1, characterized in that: The concave cavity portion includes an annular inner side surface, an annular outer side surface surrounding the inner side surface and opposite to the inner side surface, and a bottom surface connecting the inner side surface and the outer side surface to form an annular groove; the balancer also includes a middle plate, and the middle plate cover is arranged on the inner side surface edge of the opening end of the concave cavity portion.

3. The vehicle-mounted subwoofer according to claim 1 or 2, characterized in that: The bottom surface of the concave cavity is arc-shaped.

4. The vehicle-mounted subwoofer according to claim 1 or 2, characterized in that: The box body of the speaker is a rectangular parallelepiped structure, and the bottom surface of the concave cavity portion of the balancer and one side of the box body form a sound cavity.

5. The vehicle-mounted subwoofer according to claim 4, characterized in that: It also includes a bottom plate, which covers the outer surface or inner surface of the bottom of the speaker box; The speaker box is an iron box, and the bottom plate is an aluminum plate or a stainless steel plate; or, the speaker box is an aluminum box, and the bottom plate is an iron plate or a stainless steel plate; or, the speaker box is a stainless steel box, and the bottom plate is an aluminum plate or an iron plate.

6. The vehicle-mounted subwoofer according to claim 5, characterized in that: It also includes an EVA board, which is arranged between the bottom surface of the box body and the bottom plate of the speaker.

7. The vehicle-mounted subwoofer according to claim 1 or 2, characterized in that: The box body of the speaker is a circular structure, and the bottom surface of the concave cavity portion of the balancer and the inner side surface of half the circumference of the box body form a sound cavity.

8. The vehicle-mounted subwoofer according to claim 7, characterized in that: It also includes a support assembly, which includes a plurality of sealing plates. The sealing plates and the inner surface of the box body form a cavity with a top opening, and the side plates of the balancer are fixed to the top opening of the cavity.

9. The vehicle-mounted subwoofer according to claim 7, characterized in that: It also includes a bottom cover, wherein the bottom cover, the box body of the speaker and the cover of the speaker form an installation space for the magnetic control component, the vibration sound component and the balancer; The box body of the speaker is made of iron, and the bottom cover is made of aluminum or stainless steel; the box body of the speaker is made of aluminum, and the bottom cover is made of iron or stainless steel; the box body of the speaker is made of stainless steel, and the bottom cover is made of aluminum or iron.

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