CN218243831U - Automobile loudspeaker and sound system - Google Patents

Abstract

The utility model discloses an automobile loudspeaker and sound system. An automobile loudspeaker comprises a basin frame, a vibrating diaphragm, a voice coil and a magnetic circuit system with a magnetic gap, wherein the outer edge of the vibrating diaphragm is connected to the basin frame; the upper end part of the voice coil is connected to the middle part of the vibrating diaphragm, and the lower end part of the voice coil is inserted into the magnetic gap; the magnetic circuit system is arranged on the basin frame; the automobile loudspeaker further comprises two independent elastic waves which are arranged at intervals, the two elastic waves are respectively located on two opposite sides of the voice coil, part of the edge of each elastic wave is connected to the basin frame, the vibrating diaphragm is provided with two first connecting portions which are sunken downwards, and the first connecting portions are connected with the elastic waves. The utility model discloses an automotive speaker can solve the quality light, small, can guarantee again that power is big and low frequency advantage such as good down.

Description

Automobile loudspeaker and sound system

Technical Field

The utility model relates to an automobile loudspeaker and car audio system.

Background

The loudspeaker usually includes a diaphragm, a voice coil, a damper, a magnetic circuit system, etc., but for the automobile loudspeaker used for forming the automobile ceiling and headrest sound system, the requirements are light weight, small volume, large power, good low frequency lower limit, etc. The conventional loudspeaker with a single damper is generally heavy in weight, large in size and large in required installation depth; the loudspeaker without elastic wave has light weight and small volume, but has low power. The two traditional loudspeakers are not suitable for being used as the loudspeaker of the sound system of the car ceiling and the headrest

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides an automobile loudspeaker can solve the quality light, small, can guarantee again that power is big and low frequency advantage such as good down.

The utility model also provides a car audio system.

According to one aspect of the utility model, the automobile loudspeaker comprises a basin frame, a vibrating diaphragm, a voice coil and a magnetic circuit system with a magnetic gap, wherein the outer edge of the vibrating diaphragm is connected to the basin frame; the upper end part of the voice coil is connected to the middle part of the vibrating diaphragm, and the lower end part of the voice coil is inserted into the magnetic gap; the magnetic circuit system is arranged on the basin frame;

the automobile loudspeaker further comprises two independent elastic waves which are arranged at intervals, the two elastic waves are respectively located on two opposite sides of the voice coil, part of the edge of each elastic wave is connected to the basin frame, the vibrating diaphragm is provided with two first connecting portions which are sunken downwards, and the first connecting portions are connected with the elastic waves.

In a preferred embodiment, the basin stand comprises a shell and a magnetic circuit system mounting seat, the shell is hollow, the upper end of the shell is open, the outer edge of the vibrating diaphragm is connected to the upper surface of the shell, the shell is provided with a pair of long edges which are arranged oppositely, the magnetic circuit system mounting seat is located in the shell and fixedly connected with the middle of the long edges, the magnetic circuit system is arranged on the magnetic circuit system mounting seat, and the elastic waves are respectively arranged between two opposite sides of the magnetic circuit system mounting seat and the shell.

In a preferred embodiment, the basin stand further comprises two elastic wave mounting pieces, and the elastic waves are arranged on the elastic wave mounting pieces; the shell is also provided with two short sides connected between the two ends of the long sides, and the damper mounting piece is fixedly connected with the ends of the long sides and/or the short sides.

In a preferred embodiment, the damper includes an outer edge connected to the damper mounting member, a second connecting portion connected to the first connecting portion of the diaphragm, and a corrugated portion located between the outer edge and the second connecting portion, and the outer edge is lower than the corrugated portion and the second connecting portion.

In a preferred embodiment, the outer edge is in the shape of an arc or a portion of a rounded rectangle.

In a preferred embodiment, the orthographic projection of the casing on the horizontal plane is rectangular or rounded rectangle, and the voice coil, the magnetic circuit system and the damper are all accommodated in the casing.

In a preferred embodiment, the diaphragm is provided with a diaphragm central hole, the voice coil penetrates into the diaphragm central hole, and the upper end of the voice coil is covered with a dust cover; the orthographic projection of the vibrating diaphragm on the horizontal plane is in an oval shape or a track shape with a hole in the middle, and the vibrating diaphragm gradually inclines downwards from the edge to the middle hole of the vibrating diaphragm.

In a preferred embodiment, the diaphragm has a plurality of reinforcing portions, the reinforcing portions are upwardly arched or downwardly concave, and the plurality of reinforcing portions are respectively located at two opposite sides of the hole in the diaphragm and are symmetrically arranged.

In a preferred embodiment, the reinforcement portion extends in a direction from the hole in the diaphragm to the short side of the frame.

In a preferred embodiment, the number of the magnetic circuit systems is one, the magnetic circuit system comprises a T-shaped iron, a magnetic steel sleeved on the T-shaped iron, and a front piece, and the front piece is fixedly connected to the frame.

According to a second aspect of the present invention, an automobile sound system includes a headrest speaker, wherein the headrest speaker is the automobile speaker as described above.

The utility model adopts the above scheme, compare prior art and have following advantage:

the utility model discloses an automobile loudspeaker, the overall height of speaker has been reduced, increase the vibration range of speaker, thereby effectively reduce the resonant frequency of speaker and promote the depth of low frequency, solved traditional speaker structure and extended the problem because of the bass that the reduction of location support piece area caused, and power is little when not having the location support piece, transient distortion and voice coil loudspeaker voice coil lateral motion distortion scheduling problem, the miniaturized powerful function of speaker has been realized, can install in narrow space simultaneously, practice thrift the automobile inner space, the low frequency volume that has increased the speaker is felt. In summary, the advantages of light weight, small volume, high power, good low frequency lower limit and the like can be solved

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded schematic view of an automotive speaker according to embodiment 1 of the present invention.

Fig. 2 is a sectional view of an automotive speaker according to embodiment 1 of the present invention.

Fig. 3 is a perspective view of an automotive speaker according to embodiment 2 of the present invention.

Fig. 4 is an exploded schematic view of an automotive speaker according to embodiment 2 of the present invention.

Fig. 5 is a plan view of an automotive speaker according to embodiment 2 of the present invention.

Fig. 6 is a perspective view of a diaphragm according to embodiment 2 of the present invention.

FIG. 7 is a cross-sectional view of the diaphragm shown in FIG. 6 along a direction perpendicular to the short side

Fig. 8 is a perspective view of a diaphragm according to embodiment 3 of the present invention.

Fig. 9 is a perspective view of a diaphragm of a comparative example.

Fig. 10 is a graph comparing distortion curves of the speakers of examples 2 and 3 and the comparative example.

The reference numbers are as follows:

1. a basin stand; 11. a housing; 111. a long side; 112. a short side; 12. a magnetic circuit system mounting base; 13. a damper mount;

2. vibrating diaphragm; 20. a yoke ring; 21. a first connection portion; 22. a middle hole of the vibrating diaphragm; 23. a reinforcing portion;

3. a voice coil; 30. a dust cover; 31. a lead; 32. soldering lugs;

4. a magnetic circuit system; 40. a magnetic gap; 41. t iron; 42. magnetic steel; 43. a front panel;

5. elastic wave; 51. an outer edge; 52. a corrugated portion; 53. a second connecting portion.

Detailed Description

The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, enables the advantages and features of the invention to be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The utility model discloses in, "interior", "outer" is defined with the central line of voice coil loudspeaker voice coil as the reference, and in order to be interior apart from the nearer position of voice coil loudspeaker voice coil central line, otherwise be outer. The terms "upper", "lower" and "horizontal" are intended to facilitate the understanding of the structure of the speaker of the vehicle by those skilled in the art, and are not intended to limit the state of the speaker after it is mounted on the vehicle; for example, the speaker may be mounted to a lower surface of a tilting or upright member or member within the automobile.

Example 1

The embodiment provides a car speaker, which is used in a car audio system. Further, the car speaker is a headrest speaker mounted on a headrest of the car seat and/or a ceiling speaker mounted on a roof of the car. Referring to fig. 1 and 2, the car speaker includes a frame 1, a diaphragm 2, a voice coil 3, and a magnetic circuit system 4 having a magnetic gap 40. The outer edge of the vibrating diaphragm 2 is connected to the basin stand 1; the upper end part of the voice coil 3 is connected to the middle part of the vibrating diaphragm 2, and the lower end part of the voice coil 3 is inserted into the magnetic gap 40; the magnetic circuit system 4 is arranged on the basin stand 1. This automotive speaker still includes two mutually independent and the bullet ripples 5 that the interval set up, and two bullet ripples 5 are located the relative both sides of voice coil loudspeaker voice coil 3 respectively, and some edge connection in basin frame 1 of each bullet ripples 5, vibrating diaphragm 2 have two undercut's first connecting portion 21, and first connecting portion 21 and bullet ripples 5 are connected.

The orthographic projection of the frame 1 on the horizontal plane is rectangular or rounded rectangular, so that the whole loudspeaker has a long and narrow shape and can be conveniently installed in an automobile without occupying too much space in the automobile. Further, the frame 1 includes a housing 11, the housing 11 is hollow and has open upper and lower ends, the voice coil 3, the magnetic circuit system 4 and the damper 5 are all accommodated in the housing 11 and do not substantially expose the housing 11, the housing 11 is mounted on other parts (such as a headrest framework or a ceiling) of the automobile, and the housing 11 supports and protects the diaphragm 2, the voice coil 3, the magnetic circuit system 4 and the damper 5. The outer edge of the diaphragm 2 is connected to the upper surface of the housing 11; specifically, the diaphragm 2 covers the upper end of the housing 11, the outer edge of the diaphragm 2 is connected to the upper surface of the housing 11 by a yoke ring 20, and the yoke ring 20 has elasticity and is bonded to the upper surface of the housing 11. The housing 11 has a pair of oppositely disposed long sides 111 (extending in the left-right direction in fig. 2) and two short sides 112 (extending in the direction perpendicular to the paper surface in fig. 2) connected between the long sides 111, and the two long sides 111 and the two short sides 112 meet to form a space in the shape of a rectangle, a rounded rectangle or a racetrack, that is, the short sides 112 extend along a straight line or an arc line. As used herein, "racetrack" refers to a shape that is made up of a rectangle and two semi-circles, with the rectangle being located between the two semi-circles.

The basin stand 1 further comprises a magnetic circuit system mounting seat 12, the magnetic circuit system mounting seat 12 is located in the shell 11 and fixedly connected with the middle of the long side 111, and a space is reserved between the magnetic circuit system mounting seat 12 and the short side 112 of the shell 11 so as to provide a mounting space for the damper 5. The magnetic circuit system 4 is disposed on the magnetic circuit system mounting base 12. Specifically, the magnetic circuit system mounting base 12 is hollow cylindrical or annular as a whole, and the magnetic circuit system 4 is fixed in the magnetic circuit system mounting base 12. The magnetic circuit system mounting base 12 is fixed to the middle of the long side 111 of the housing 11 through a plurality of connecting ribs.

The frame 1 further comprises two bayonets mounts 13. As shown in fig. 2, two damper mounting members 13 are respectively located at the left and right sides of the magnetic circuit system mounting base 12, and each damper mounting member 13 is provided with a damper 5, that is, the damper 5 is respectively located between the left and right opposite sides of the magnetic circuit system mounting base 12 and the housing 11. Specifically, the damper attachment 13 is substantially arc-shaped in plan view. The spider 13 is fixedly connected to the left or right end of the short side 112 and/or the long side 111 of the housing 11 by a plurality of connection ribs. In this embodiment, the damper mounting member 13 is fixedly disposed between the long sides 111 through the connecting rib, and is not connected to the short sides 112 at intervals. Further, the damper mount 13, the magnetic circuit system mount 12, the connector, and the housing 11 are integrally molded, for example, integrally injection-molded from plastic or the like. The two damper mounting members 13 are symmetrically arranged with respect to the magnetic circuit system mounting base 12.

The damper 5 includes an outer edge connected to the damper mount 13, a second connection portion 53 connected to the first connection portion 21 of the diaphragm 2, and a corrugated portion 52 between the outer edge 51 and the second connection portion 53. The outer edge 51 is horizontally arranged and is lower than the corrugated part 52 and the second connecting part 53; the outer edge 51 is in the shape of an arc or a portion of a rounded rectangle, and the outer edge 51 is bonded to the upper surface of the spider mount 13. The corrugated portion 52 has a plurality of peaks and valleys and is entirely higher than the outer edge 51. The bellows 52 is provided around the second connection portion 53, and spans half to three quarters of the circumference of the second connection portion 53. The second connection portion 53 is horizontally disposed, and the lower surface of the first connection portion 21 of the diaphragm 2 is also horizontally disposed, and they are bonded to each other.

The diaphragm 2 is arranged in bilateral symmetry, and two of the first connecting portions 21 are arranged symmetrically. The middle part of vibrating diaphragm 2 is equipped with vibrating diaphragm mesopore 22, and voice coil loudspeaker voice coil 3 penetrates vibrating diaphragm mesopore 22, and the upper end cover of voice coil loudspeaker voice coil 3 is equipped with dust cover 30. The orthographic projection of the diaphragm 2 on the horizontal plane is an ellipse or a racetrack shape with a hole in the middle, and the diaphragm 2 gradually inclines downwards from the edge to the hole 22 in the diaphragm, namely the main body part of the diaphragm 2 is obliquely arranged and is approximately similar to a cone.

The upper end of the voice coil 3 passes through the hollow of the diaphragm 2 and is exposed above the diaphragm 2, and the voice coil 3 is bonded with the hole wall of the hole 22 in the diaphragm, and the lower end of the voice coil 3 is inserted into the magnetic gap 40 of the magnetic circuit system 4. The upper end of the voice coil 3 is electrically connected to a pair of leads 31; lead through holes are formed in the vibrating diaphragm 2, a pair of soldering lugs 32 (specifically embedded in the elastic wave mounting part 13 of the frame 1) is fixedly arranged on the frame 1, and the lead 31 penetrates through the lead through holes and then is connected with the soldering lugs 32 in a conduction mode. The pair of solder pads 32 may be used to connect to a power amplifier or the like for accessing a sound source to be played.

The number of the magnetic circuit systems 4 is one, each magnetic circuit system 4 comprises a T iron 41, a magnetic steel 42 sleeved on the T iron 41 and a front sheet 43, the front sheet 43 is laminated on the magnetic steel 42, and the lower surface of the front sheet 43 is bonded with the upper surface of the magnetic steel 42; the magnetic steel 42 is stacked on the base of the T iron 41, and the lower surface of the magnetic steel 42 is adhered to the upper surface of the base of the T iron 41; the front piece 43 and the magnetic steel 42 are sleeved on the column part of the T-iron 41, and the column part extends upwards from the base of the T-iron 41. The magnetic gap 40 is formed between the outer surface of the T-bar 41 and the inner surfaces of the magnetic steel 42 and the front piece 43. The magnetic steel 42 and the front piece 43 are fixedly connected with the basin stand 1; specifically, the magnetic steel 42 and the front sheet 43 are inserted into the magnetic circuit system mounting base 12 and fixedly connected to the magnetic circuit system mounting base 12, for example, by bonding.

Example 2

The present embodiment is different from embodiment 1 in that the diaphragm 2 is basically the same as embodiment 1. Referring to fig. 3 to 7, the diaphragm 2 further has a plurality of reinforcing portions 23, the reinforcing portions 23 are upwardly arched or downwardly concave, and the plurality of reinforcing portions 23 are respectively located at two opposite sides of the hole 22 in the diaphragm and are symmetrically arranged. The reinforcing portion 23 extends in the direction from the diaphragm hole 22 toward the short side 112 of the frame 1. In the present embodiment, the reinforcing portion 23 is arched upward, and extends radially outward from the middle of the diaphragm 2 as a whole. The number of the reinforcing parts 23 is four, the inner end of each reinforcing part 23 is close to the middle hole 22 of the vibrating diaphragm, the outer end is close to the vertex angle part of the vibrating diaphragm 2, and the whole body extends along a straight line. In this embodiment, the reinforcing portion 23 is integrally provided with the main body portion of the diaphragm 2, and is formed to be upwardly arched from the main body of the diaphragm 2. In other embodiments, the reinforcing portion 23 may be fixed to the upper surface or the lower surface of the main body of the diaphragm 2 and may have a strip shape as a whole. The first connecting portion 21 is located between the adjacent reinforcing portions 23. Diaphragm 2 is fillet rectangle project organization to increased the rib, compared with the oval-shaped diaphragm of tradition, the rigidity of the diaphragm of this embodiment is better, can be more stable in the middle of the process of speaker vibration, the focus is comparatively stable, and it is relatively easy to finalize the design production.

Example 3

The present embodiment differs from embodiment 2 in the shape of the diaphragm 2. Referring to fig. 8, the orthographic projection of the diaphragm 2 on the horizontal plane is racetrack-shaped, the middle part of which is rectangular, and the left and right side parts of which are generally semicircular. The four reinforcing portions 23 extend from the diaphragm center hole 22 to the left and right sides of the diaphragm 2.

Comparative example

The automobile speaker of the comparative example is different from example 2 in the diaphragm 2. Referring to fig. 9, the diaphragm 2 is not provided with the first connecting portion which is depressed downward, and is not provided with the reinforcing portion which is arched upward. The height of the car speaker of the comparative example was substantially the same as that of the car speaker of example 2, and the installation position of the damper was slightly higher.

The same performance test was performed on the car speakers of examples 2 and 3 and the comparative example, and the distortion curve is shown in fig. 10. In fig. 10, the thickest curve represents the distortion curve of the car speaker of example 2, the thicker curve represents the distortion curve of the car speaker of example 3, and the thinnest curve represents the distortion curve of the car speaker using the diaphragm 2 of the comparative example. It can be seen that the total harmonic distortion of the speakers of example 2 and example 3 in each frequency band is lower than that of the speaker using the diaphragm 2 of the comparative example, the sound effect is closer to the original sound, and the distortion is smaller.

The diaphragm 2 of the above embodiment avoids the following problems: the diaphragm 2 is not a completely rigid body, and is affected by the non-uniform processing technology and material of the diaphragm, so that the diaphragm 2 can generate segmentation vibration when vibrating, and peaks and/or troughs appear in the middle-frequency region and the high-frequency region of the frequency of the loudspeaker, thereby causing distortion. The diaphragm 2 of the above embodiment can effectively reduce distortion.

According to the automobile loudspeaker, the total height of the loudspeaker is reduced, the vibration amplitude of the loudspeaker is increased, the resonance frequency of the loudspeaker is effectively reduced, so that the depth of low frequency is improved, the problem of bass extension caused by the reduction of the area of the positioning support piece in the traditional loudspeaker structure is solved, the problems of low power, transient distortion, transverse motion distortion of the voice coil 3 and the like when the positioning support piece is not arranged are solved, the function of miniaturization and high power of the loudspeaker is realized, meanwhile, the loudspeaker can be installed in a narrow space, and the space in an automobile is saved; through adopting non-circular vibrating diaphragm 2, compared with ordinary circular drum paper vibrating diaphragm 2, the radiating area of the loudspeaker is enlarged, and the low frequency volume of the loudspeaker is increased. The automobile loudspeaker has better stability.

As used in this specification and the appended claims, the terms "comprises" and "comprising" are intended to cover only the explicitly recited steps or elements as not constituting an exclusive list and that the method or apparatus may include other steps or elements.

It is further understood that the use of "a plurality" in this disclosure means two or more, as other terms are analogous.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

The above embodiments are only for illustrating the technical concept and features of the present invention, and are preferred embodiments, which are intended to enable persons skilled in the art to understand the contents of the present invention and to implement the present invention, and thus, the protection scope of the present invention cannot be limited thereby.

Claims (10)

1. An automobile loudspeaker comprises a frame, a vibrating diaphragm, a voice coil and a magnetic circuit system with a magnetic gap, wherein the outer edge of the vibrating diaphragm is connected to the frame; the upper end part of the voice coil is connected to the middle part of the vibrating diaphragm, and the lower end part of the voice coil is inserted into the magnetic gap; the magnetic circuit system is arranged on the basin frame;

the automobile loudspeaker is characterized by further comprising two independent elastic waves which are arranged at intervals, wherein the two elastic waves are respectively located on two opposite sides of the voice coil, part of the edge of each elastic wave is connected to the basin frame, the vibrating diaphragm is provided with two first connecting parts which are sunken downwards, and the first connecting parts are connected with the elastic waves.

2. The car speaker as claimed in claim 1, wherein the frame comprises a hollow casing and a magnetic circuit system mounting seat, the hollow casing has an open upper end, the outer edge of the diaphragm is connected to the upper surface of the casing, the casing has a pair of oppositely disposed long sides, the magnetic circuit system mounting seat is located in the casing and fixedly connected to the middle of the long sides, the magnetic circuit system is disposed on the magnetic circuit system mounting seat, and the damper is disposed between the opposite sides of the magnetic circuit system mounting seat and the casing.

3. The automotive speaker of claim 2, wherein the frame further comprises two damper mounts, the dampers being disposed on the damper mounts; the shell is also provided with two short sides connected between the two ends of the long sides, and the damper mounting piece is fixedly connected with the ends of the long sides and/or the short sides.

4. The automotive speaker of claim 3, wherein the damper includes an outer edge connected to the damper mount, a second connection connected to the first connection of the diaphragm, and a corrugated portion between the outer edge and the second connection, the outer edge being lower than the corrugated portion and the second connection.

5. The automotive speaker of claim 4, wherein the outer edge is arcuate in shape or is a portion of a rounded rectangle.

6. The automobile speaker as claimed in claim 2, wherein an orthographic projection of the enclosure on a horizontal plane is a rectangle or a rounded rectangle, and the voice coil, the magnetic circuit system and the damper are accommodated in the enclosure; and/or the number of the magnetic circuit systems is one, the magnetic circuit systems comprise T iron, magnetic steel sleeved on the T iron and a front piece, and the front piece is fixedly connected to the basin frame.

7. The automotive speaker of claim 1, wherein the diaphragm has a diaphragm center hole, the voice coil penetrates the diaphragm center hole, and an upper end of the voice coil is covered with a dust cover; the orthographic projection of the vibrating diaphragm on the horizontal plane is in an oval shape or a track shape with a hole in the middle, and the vibrating diaphragm gradually inclines downwards from the edge to the middle hole of the vibrating diaphragm.

8. The car speaker as claimed in claim 7, wherein said diaphragm has a plurality of reinforcing portions, said reinforcing portions being upwardly arched or downwardly concave, said plurality of reinforcing portions being respectively located at opposite sides of the hole in said diaphragm and being symmetrically arranged.

9. The automotive speaker of claim 8, wherein the reinforcement portion extends in a direction from the center hole of the diaphragm toward the short side of the frame.

10. A car audio system comprising a headrest speaker, wherein the headrest speaker employs the car speaker as claimed in any one of claims 1 to 9.

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