Vehicle-mounted subwoofer

Abstract

The invention relates to a vehicle-mounted subwoofer. The subwoofer comprises a sound box; the magnetic control assembly is arranged in the sound box; the vibration sounding assembly generates vibration and makes a sound under the action of the magnetic field of the magnetic control assembly; the balancer is arranged in the sound box, the balancer comprises a concave cavity part and a side plate, the side plate is a flat plate, the middle part of the side plate is provided with an opening, the side plate is sleeved at the opening end of the concave cavity part, and the opening of the side plate is connected with the outer side surface of the concave cavity part; and a gap is formed between the bottom surface of the concave cavity part and the sound box to form a sound cavity. Compared with the prior art, the balancer is additionally arranged in the vehicle-mounted subwoofer, so that the air flow flowing space is increased, and the purpose of enhancing the low-frequency effect is achieved.

Description

Technical Field

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

[0002] The car subwoofer is an important part of the vehicle audio system. The subwoofer, also known as the bass speaker, can produce lower frequency sounds (usually in the range of 20-200Hz), which can make the music sound more passionate and more shocking. Therefore, the car subwoofer has become an important choice for many people to upgrade their car audio.

[0003] The subwoofer mainly includes an auxiliary control unit and a speaker unit. The auxiliary control unit provides installation space for the speaker unit, and the sound of the subwoofer mainly depends on the speaker unit. The speaker unit usually includes a magnetic control component and a vibration sound-generating component. The magnetic control component provides a magnetic field. After the audio current is passed, the vibration sound-generating component generates vibrations that cause the air to vibrate, thereby producing sound. This process of converting electrical energy into sound energy enables the subwoofer to produce a strong and deep bass effect.

[0004] However, when the existing vehicle-mounted speakers play bass, the bass playing effect is poor. Summary of the invention

[0005] 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.

[0006] A vehicle-mounted subwoofer, comprising:

[0007] Speakers;

[0008] A magnetic control component is arranged in the sound box;

[0009] A vibration sound-generating component, which generates vibration and sounds under the action of the magnetic field of the magnetic control component;

[0010] A balancer is arranged in the sound box, 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 sound box to form a sound cavity.

[0011] Compared with the prior art, the present invention adds a balancer in the speaker. The balancer has a concave cavity. A sound cavity is formed between the balancer and the speaker, which increases the space for air flow and makes the bass dynamics 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.

[0012] 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 opening end of the concave cavity portion.

[0013] In one embodiment, the bottom surface of the concave cavity is arc-shaped.

[0014] In one of the embodiments, the speaker box has a rectangular structure, and the bottom surface of the concave cavity of the balancer and one side of the box form a sound cavity.

[0015] In one embodiment, it further includes a bottom plate, the bottom plate covers the outer surface or inner surface of the bottom of the speaker box;

[0016] The sound box is an iron box, and the bottom plate is an aluminum plate or a stainless steel plate; or, the sound box is an aluminum box, and the bottom plate is an iron plate or a stainless steel plate; or, the sound box is a stainless steel box, and the bottom plate is an aluminum plate or an iron plate.

[0017] In one of the embodiments, an EVA board is further included, and the EVA board is arranged between the bottom surface and the bottom plate of the speaker box.

[0018] In one of the embodiments, the speaker box has a circular structure, and the bottom surface of the concave cavity of the balancer and the inner surface of half of the circumference of the box form a sound cavity.

[0019] In one of the embodiments, 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 body form a cavity with a top opening, and the side plates of the balancer are fixed to the top opening of the cavity.

[0020] In one embodiment, it further comprises a bottom cover, wherein the bottom cover, the box body of the speaker and the cover body of the speaker form an installation space for the magnetic control component, the vibration sound generating component and the balancer;

[0021] 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

[0022] Figure 1 It is a front view of the first embodiment of the vehicle-mounted subwoofer of the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom structure of the vehicle-mounted subwoofer embodiment 1 of the present invention;

[0024] Figure 3An exploded view of the first embodiment of the vehicle-mounted subwoofer of the present invention;

[0025] Figure 4 It is a cross-sectional structural diagram of a first embodiment of a vehicle-mounted subwoofer of the present invention;

[0026] Figure 5 It is a front view of an embodiment of a balancer in a vehicle-mounted subwoofer of the present invention;

[0027] Figure 6 It is a front view of another embodiment of a balancer in a vehicle-mounted subwoofer of the present invention;

[0028] Figure 7 An exploded view of an embodiment of a bottom plate of a vehicle-mounted subwoofer of the present invention;

[0029] Figure 8 It is a structural schematic diagram of an embodiment of a bottom plate of a vehicle-mounted subwoofer of the present invention;

[0030] Fig. 9 This is a structural schematic diagram of a second embodiment of a vehicle-mounted subwoofer of the present invention;

[0031] Fig.10 It is a cross-sectional structural diagram of a second embodiment of a vehicle-mounted subwoofer of the present invention;

[0032] Fig.11 This is a schematic diagram without a cover of the second embodiment of the vehicle-mounted subwoofer of the present invention. DETAILED DESCRIPTION

[0033] 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.

[0034] In order to improve the bass effect, the present invention observes and analyzes the pronunciation state of the vehicle-mounted subwoofer, and finds that the vehicle-mounted subwoofer requires a sound cavity of a certain volume to move a large number of air molecules per unit time to produce strong bass. The vehicle-mounted 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, which affects the bass effect.

[0035] Based on this, the present invention adds a balancer to the car subwoofer, thereby increasing the space for airflow to achieve the purpose of enhancing the low-frequency effect. Furthermore, the present invention also adds a bottom cover made of a different material from the speaker inside or outside the bottom of the speaker, which can change the overall center of gravity and enhance the damping and rigidity of the speaker, reduce speaker distortion and low-frequency resonance, and improve bass quality.

[0036] The technical solution of the present application is described in detail below with reference to specific embodiments.

[0037] Example 1

[0038] See also Figure 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 arranged in the installation space of the auxiliary control unit.

[0039] 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 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 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 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 112 by screws.

[0040] The speaker unit includes a magnetic control component and a vibration sound-generating component, wherein the magnetic control component includes a T iron 21, a magnetic steel 22 and a washer 23, and the vibration sound-generating component includes a voice coil 24, a spring 25, a sound basin 26, a dust cover 27 and a speaker mesh 28. The magnetic control component is arranged in the installation space of the auxiliary control unit, and the vibration sound-generating component is fixedly connected to the auxiliary control component. The magnetic control component provides a magnetic field, and after the audio current is passed, the vibration sound-generating component generates vibration to cause the vibration of the air, thereby emitting sound.

[0041] In the magnetron assembly, the T-iron 21 includes a disc and a cylinder. The inner bottom surface of the box 112 is provided with a recess, in which the disc is installed; the cylinder is fixed on the disc. The magnetic steel 22 is annular, which is sleeved on the cylinder of the T-iron 21, and there is a gap between the magnetic steel 22 and the cylinder to form a uniform magnetic flux loop. The washer 23 is also annular, which is arranged on the magnetic steel 22 for magnetic conduction, and together with the magnetic steel 22, it forms a magnetic flux loop, and there is also a gap between the washer 23 and the cylinder.

[0042] In the vibration sound generating assembly, 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 elastic wave 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 along the axial direction. The sound basin 26 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, which can be in vibration contact with the top of the voice coil 24; the outer edge of the folding ring is fixed on the upper surface of the cover body 114. The dust cover 27 is set at the opening formed by the diaphragm, which can prevent dust and debris from entering the magnetic circuit system and avoid affecting the sound quality of the car speaker. The speaker net 28 is set at the opening of the cover body 114, which can not only isolate dust, but also transmit and filter sound.

[0043] The balancing unit includes a balancer 31 and a support assembly 32. Figure 5 The balancer 31 includes a side plate 311, a concave cavity 312 and a middle plate 313. The side plate 311 is a flat plate with an elliptical opening in the middle. The concave cavity 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 312 can be an arc or other shapes such as a 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 opening end of the concave cavity 312. In this embodiment, the support assembly 32 is a rectangular parallelepiped structure with two ends opened and composed of a plurality of sealing plates, one end of which is fixedly connected to the inner surface of the box 112, and the other end of which 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, please refer to Figure 4 shown.

[0044] In the car subwoofer, the magnetic control assembly generates a constant magnetic field with constant size and direction. When the controller 12 passes current to the voice coil 24, the coil of the voice coil 24 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 24 are constantly changing. Since the voice coil 24 is partially embedded in the magnetic control assembly, the changing magnetic field generated by the voice coil 24 and the constant magnetic field of the magnetic control assembly interact with each other, causing the voice coil 24 to move up and down in the annular gap of the magnetic control assembly, thereby driving the diaphragm to vibrate, thereby producing sound.

[0045] Compared with the prior art, the present invention adds a balancer to the speaker, and the balancer has a concave cavity. A sound cavity is formed between the balancer and the speaker, which increases the space for airflow and makes the bass dynamic more complete, thereby achieving a looser and fuller low-frequency effect. At the same time, the vibration sound-generating unit drives the vibration of the balancer, so that the balancer can reflect the sound, which helps to balance the bass movement up and down. In addition, by adding a bottom plate made of a different material from the speaker on the outside of 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.

[0046] The present application can have many variant 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 speaker box and the bottom cover are made of different materials. In addition, the groove of the balancer can also be in other structural forms, such as Figure 6 As shown, the balancer only includes a side plate and a concave cavity, the concave cavity includes an elliptical side surface and a bottom surface connected to the bottom of the side surface, 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 surface of the concave cavity. Figure 7-8 As shown, 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 whole speaker and enhance the damping and rigidity of the speaker, so as to reduce the distortion of the speaker and reduce the low-frequency resonance phenomenon, thereby improving the bass quality.

[0047] Example 2

[0048] See also Figure 9-11In the vehicle speaker of the second embodiment, the auxiliary control unit includes a speaker box 11', a controller 12', an EVA board 13', a bottom cover and a center column 15'. The speaker box 11' includes a box body 112' and a cover body 114' covered 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, and 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'.

[0049] 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 middle column 15' is a hollow columnar structure, and the bottom end of the middle column 15' is fixed to the positioning plate 145' of the bottom cover.

[0050] The magnetron 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, and the bottom end of the cylinder of the T-iron 21' is fixed to the top of the middle column 16'. The magnetic steel 22' is in a circular ring shape, which is sleeved on the cylinder of the T-iron 21', and there is a gap between the cylinder and the T-iron 21' to form a uniform magnetic flux circuit. The washer 23' is also in a circular ring shape, which is arranged on the magnetic steel 22' for magnetic conduction, and together with the magnetic steel 22', it forms a magnetic flux circuit, and there is also a gap between the washer 23' and the cylinder.

[0051] The vibration sound-generating component includes a voice coil 24', a spring 25', a sound basin 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 along the axial direction. The sound basin 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 curved edge, wherein the folded ring at one end is fixedly connected to the middle 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 sound basin 26', and the lower end of the speaker 27' is fixedly connected to the top of the platform part of the box 112'.

[0052] The balancing unit includes a balancer 31' and a support assembly 32'. The structure of the balancer 31' is the same as that of the first embodiment, and will not be described again. In this embodiment, the support assembly 32' includes a plurality of sealing plates, and the sealing plates and the inner surface of the box body 112' form a cavity with a top opening, and the side plates of the balancer 31' are fixed to the top opening of the cavity, so that a sound cavity is formed between the balancer 31' and the box body 112'.

[0053] 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.

[0054] 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

1. A car-mounted subwoofer, characterized in that: include: Speakers; A magnetic control component is arranged in the sound box; 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 sound box, 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 sound box 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 facing 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, which is covered 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 sound box 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 sound box is an iron box, and the bottom plate is an aluminum plate or a stainless steel plate; or, the sound box is an aluminum box, and the bottom plate is an iron plate or a stainless steel plate; or, the sound 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 of the speaker and the bottom plate.

7. The vehicle-mounted subwoofer according to claim 1 or 2, characterized in that: The box body of the sound box 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 supporting 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 body of the speaker form an installation space for the magnetic control component, the vibration sound generating 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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