Loudspeaker and vehicle

Abstract

The utility model discloses a loudspeaker and a vehicle, and the loudspeaker comprises a housing, two opposite side surfaces of the housing are respectively provided with an opening; the two openings are formed in the shell, the two vibrating diaphragm devices cover the two openings respectively, the two vibrating diaphragm devices and the shell jointly define an inner cavity, and the two vibrating diaphragm devices are suitable for outputting sound in the direction away from each other. According to the loudspeaker provided by the utility model, the double-diaphragm device is adopted, so that the vibration of the inner cavity can be eliminated, and the purity of sound is improved. Moreover, the two vibrating diaphragm devices are directly arranged at the opening of the shell, so that the structure of the loudspeaker is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, and particularly relates to a loudspeaker and a vehicle. Background Art

[0002] The loudspeaker is an important part of the vehicle entertainment system and can provide functions such as music playing and voice interaction.

[0003] In the related art, the power of the subwoofer is relatively large. During the use of the loudspeaker, the inner cavity of the loudspeaker vibrates severely, which will cause the loudspeaker itself to vibrate greatly, easily drive other objects around the loudspeaker to vibrate together and generate abnormal noises, making the sound emitted by the loudspeaker impure and with many noises. Moreover, the structure of the loudspeaker is complex and the processing difficulty is relatively large. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a loudspeaker. By adopting a double diaphragm device, the vibration of the inner cavity can be eliminated and the purity of the sound can be improved. Moreover, the two diaphragm devices are directly arranged at the openings of the housing, simplifying the structure of the loudspeaker.

[0005] Another object of the utility model is to provide a vehicle adopting the above-mentioned loudspeaker.

[0006] The loudspeaker according to the first aspect embodiment of the utility model includes: a housing, openings are respectively formed on two opposite side surfaces of the housing; two diaphragm devices, the two diaphragm devices respectively cover the two openings, the two diaphragm devices and the housing jointly define an inner cavity, and the two diaphragm devices are adapted to output sound in a direction away from each other.

[0007] In the loudspeaker according to the utility model, the two diaphragm devices move towards each other without a phase difference, and the loudness obtained by the loudspeaker is the sum of the loudness generated by the two diaphragm devices, thus effectively improving the loudness obtained by the loudspeaker. In addition, when the two diaphragm devices move away from each other, the momenta generated by the movements of the two diaphragm devices cancel each other out, thereby eliminating the vibration of the inner cavity, reducing the vibration of the loudspeaker itself, and further obtaining a relatively pure low-frequency sound. In addition, the structure of the loudspeaker is simple and there is no need to set air vents, thus avoiding wasting the vibration area of the diaphragm device and improving the sensitivity of the loudspeaker, that is, improving the sound height of the loudspeaker. Moreover, the production efficiency of the loudspeaker is high.

[0008] According to some embodiments of the utility model, the loudspeaker includes a magnetic circuit device, the diaphragm device includes a diaphragm and a voice coil, the diaphragm can vibrate relative to the housing, the voice coil is fixed to the diaphragm, and the magnetic circuit device is used to drive the voice coil to move.

[0009] According to some embodiments of the present utility model, the diaphragm is connected to the housing to cover the opening, and the voice coil cooperates with the magnetic circuit device to drive the diaphragm to vibrate relative to the housing.

[0010] According to some embodiments of the present utility model, the diaphragm device includes a chassis, at least a part of the chassis is located in the inner cavity and is fixedly connected to the housing, and the diaphragm is arranged on the chassis.

[0011] According to some embodiments of the present utility model, the chassis includes: a chassis body located in the inner cavity; a mounting portion connected to the edge of the chassis body, the mounting portion is fitted at the opening, and the diaphragm is arranged at the mounting portion.

[0012] According to some embodiments of the present utility model, the mounting portion includes: a first mounting portion connected to the edge of the chassis body, the first mounting portion is located between the outer peripheral edge of the diaphragm and the side wall of the opening; a second mounting portion, one end of the second mounting portion is connected to the first mounting portion, the other end of the second mounting portion extends along the radial direction of the chassis body away from the first mounting portion, and the second mounting portion faces the inner wall surface of the housing.

[0013] According to some embodiments of the present utility model, the diaphragm device includes a spider, the spider is respectively connected to the voice coil and the chassis, and the spider is used to maintain the linear movement of the voice coil.

[0014] According to some embodiments of the present utility model, the magnetic circuit device is clamped between two diaphragm devices.

[0015] According to some embodiments of the present utility model, mounting grooves are formed on the chassis; both ends of the magnetic circuit device are respectively fitted in the mounting grooves of the two diaphragm devices.

[0016] According to some embodiments of the present utility model, the two diaphragm devices are respectively a first diaphragm device and a second diaphragm device, and first fitting grooves and second fitting grooves are respectively formed at both ends of the magnetic circuit device corresponding to the first diaphragm device and the second diaphragm device; the end of the voice coil of the first diaphragm device is movably fitted in the first fitting groove, and the end of the voice coil of the second diaphragm device is movably fitted in the second fitting groove.

[0017] According to some embodiments of the present utility model, the diaphragm device includes a dust cap, the diaphragm is provided with a through hole corresponding to the voice coil, the end of the voice coil away from the diaphragm is fitted in the through hole, and the dust cap is arranged on the side of the diaphragm away from the voice coil and covers the through hole.

[0018] A vehicle according to an embodiment of the second aspect of the present utility model includes: a vehicle body; a loudspeaker, the loudspeaker being the loudspeaker according to the above-mentioned embodiment of the first aspect of the present utility model, and the loudspeaker being provided on the vehicle body.

[0019] According to some embodiments of the present utility model, a driver's seat and a co-driver's seat are provided in the vehicle body, and the loudspeaker is located between the driver's seat and the co-driver's seat.

[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic diagram of a loudspeaker according to an embodiment of the present utility model;

[0023] Figure 2 is Figure 1 an enlarged view of part A circled in;

[0024] Figure 3 is a sectional view of a loudspeaker according to an embodiment of the present utility model;

[0025] Figure 4 is a schematic diagram of a loudspeaker from another angle according to an embodiment of the present utility model, in which the housing is not shown;

[0026] Figure 5 is an exploded view of a loudspeaker from another angle according to an embodiment of the present utility model, in which the housing is not shown;

[0027] Figure 6 is a radial sectional view of a loudspeaker according to an embodiment of the present utility model.

[0028] Reference Signs:

[0029] 100, loudspeaker;

[0030] 1, housing; 11, opening; 12, inner cavity;

[0031] 2, diaphragm device; 21, chassis; 211, chassis body;

[0032] 212, mounting part; 2121, first mounting part; 2122, second mounting part;

[0033] 213, mounting groove; 22, diaphragm; 221, through hole;

[0034] 222. Diaphragm body; 223. Hem;

[0035] 23. Voice coil; 24. Spider; 25. Dust cap;

[0036] 26. First diaphragm device; 27. Second diaphragm device;

[0037] 3. Magnetic circuit device; 311. First mating groove; 312. Second mating groove;

[0038] 32. First magnetic circuit device; 321. First washer; 322. U-shaped iron;

[0039] 33. Second magnetic circuit device; 331. Second washer;

[0040] 34. Magnet. Specific embodiments

[0041] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Below, reference is made to Figures 1-6 Describe the loudspeaker 100 according to the embodiment of the first aspect of the present utility model.

[0042] As Figure 1 shown, the loudspeaker 100 according to the embodiment of the first aspect of the present utility model includes a housing 1 and two diaphragm devices 2.

[0043] Specifically, openings 11 are respectively formed on two opposite side surfaces of the housing 1, and the two diaphragm devices 2 respectively cover the two openings 11. The two diaphragm devices 2 and the housing 1 together define an inner cavity 12, and the two diaphragm devices 2 are adapted to output sound in directions away from each other.

[0044] For example, in Figure 1 the example, the two openings 11 are respectively formed on two opposite sides of the housing 1 in the left-right direction. The two diaphragm devices 2 are opposite to each other in the left-right direction. The two diaphragm devices 2 and the housing 1 together define a closed inner cavity 12. A relative part of the first diaphragm device 2 and the second diaphragm device 2 is respectively located in the inner cavity 12, and the two diaphragm devices 2 are symmetrically arranged back to back. When the loudspeaker 100 works, the two diaphragm devices 2 can move away from each other or move towards each other simultaneously to push the air to emit sound.

[0045] With such a setting, the two diaphragm devices 2 approach or move away from each other. During the vibration process of the diaphragm devices 2, there is no phase difference. The loudness obtained by the speaker 100 is the sum of the loudness generated by the two diaphragm devices 2, that is, the volume emitted by the speaker 100 is the sum of the sounds generated by the two diaphragm devices 2, thereby effectively increasing the loudness obtained by the speaker 100. In addition, the directions of movement of the two diaphragm devices 2 are opposite to each other, and the momenta generated by the movements of the two diaphragm devices 2 cancel each other out, thereby eliminating the vibration of the inner cavity 12, reducing the vibration of the speaker 100 itself, and further avoiding the abnormal noise generated by the vibration of the speaker 100 driving other surrounding objects, and a relatively pure low-frequency sound can be obtained. Moreover, it also avoids the damage of other components inside the speaker 100 caused by the vibration of the inner cavity 12, thereby extending the service life of the speaker 100. Additionally, the two diaphragm devices 2 are directly arranged at the corresponding openings 11 of the housing 1. Compared with the traditional technology of using air vents to discharge the air flow inside the speaker, this solution does not require the setting of air vents, thereby avoiding the waste of the vibration area of the diaphragm devices 2 and improving the sensitivity of the speaker 100, that is, increasing the sound height of the speaker 100. Moreover, the structure of the speaker 100 is simple and the production difficulty is low, thereby improving the production efficiency of the speaker 100.

[0046] For example, in Figure 3 the example, the sound emitted by the diaphragm device 2 on the left propagates to the left, and the sound emitted by the diaphragm device 2 on the right propagates to the right. With such a setting, whether at the position on the left side of the speaker 100 or at the position on the right side of the speaker 100, the sound emitted from the front of the speaker 100 can be heard, improving the user experience. In addition, the sound emitted by the diaphragm device 2 directly propagates outside the speaker 100, thereby improving the sound restoration degree of the speaker 100, and further improving the use effect of the speaker 100. Moreover, a more powerful, thick and clean low-frequency sound can also be obtained.

[0047] According to the speaker 100 of the present invention, the two diaphragm devices 2 move towards each other and there is no phase difference. The loudness obtained by the speaker 100 is the sum of the loudness generated by the two diaphragm devices 2, thereby effectively increasing the loudness obtained by the speaker 100. In addition, when the two diaphragm devices 2 move away from each other, the momenta generated by the movements of the two diaphragm devices 2 cancel each other out, thereby eliminating the vibration of the inner cavity 12, reducing the vibration of the speaker 100 itself, and further a relatively pure low-frequency sound can be obtained. Additionally, the structure of the speaker 100 is simple and does not require the setting of air vents, thereby avoiding the waste of the vibration area of the diaphragm devices 2 and improving the sensitivity of the speaker 100, that is, increasing the sound height of the speaker 100. Moreover, the production efficiency of the speaker 100 is high.

[0048] According to some embodiments of the present invention, referring to Figure 1 、Figure 5 and Figure 6 As shown in Figure 6 , the loudspeaker 100 includes a magnetic circuit device 3. The diaphragm device 2 includes a diaphragm 22 and a voice coil 23. The diaphragm 22 is capable of vibrating relative to the housing 1. The voice coil 23 is fixed to the diaphragm 22. The magnetic circuit device 3 is used to drive the voice coil 23 to move.

[0049] For example, in the examples of Figure 1 、 Figure 5 and Figure 6 the magnetic circuit device 3 is located between the voice coils 23 of the two diaphragm devices 2. One end of the voice coil 23 away from the magnetic circuit device 3 is fixedly connected to the diaphragm 22. When the magnetic circuit device 3 is energized to drive the voice coil 23 to move along the central axis of the magnetic circuit device 3 (i.e., the left - right direction in Figure 1 ), the voice coil 23 drives the diaphragm 22 to vibrate, and the diaphragm 22 vibrates to emit and propagate sound. Thus, when the voice coil 23 reciprocates inwards and outwards along the central axis of the voice coil 23, the voice coil 23 drives the diaphragm 22 to make a reciprocating motion, so that the diaphragm 22 pushes the air to move, thereby enabling the loudspeaker 100 to emit sound. In addition, the connection between the diaphragm 22 and the voice coil 23 is stable, which helps the loudspeaker 100 to be used stably for a long time.

[0050] According to some embodiments of the present utility model, referring to Figure 1 and Figure 5 the diaphragm 22 is connected to the housing 1 to cover the opening 11, and the voice coil 23 cooperates with the magnetic circuit device 3 to drive the diaphragm 22 to vibrate relative to the housing 1.

[0051] For example, in the examples of Figure 1 and Figure 5 the diaphragm 22 is arranged at the opening 11 to seal the opening 11. The diaphragms 22 of the two diaphragm devices 2 and the housing 1 jointly define an inner cavity 12. One end of the voice coil 23 away from the diaphragm 22 cooperates with the magnetic circuit device 3. Thus, the cooperation between the voice coil 23 and the magnetic circuit device 3 is stable, improving the stability and reliability of the movement of the voice coil 23, thereby improving the reliability of the vibration of the diaphragm 22 and the reliability of the use of the loudspeaker 100. In addition, by directly connecting the diaphragm 22 to the housing 1 to cover the opening 11, the number of components of the loudspeaker 100 is reduced, and the structure of the loudspeaker 100 is simplified.

[0052] According to some alternative embodiments of the present utility model, in combination with Figure 1 and Figure 2, the diaphragm 22 includes a diaphragm body 222 and a folded edge 223. One side of the diaphragm body 222 close to the voice coil 23 is connected to the voice coil 23, and the other side of the diaphragm body 222 extends radially outward to the opening 11. One side of the folded edge 223 is connected to the other side of the diaphragm body 222, and the other side of the folded edge 223 bends and extends to the inner wall surface of the opening 11 and is connected to the housing 1 or the chassis 21. The folded edge 223 has elasticity, and the diaphragm body 222 has rigidity. When the voice coil 23 moves along the axial direction of the magnetic circuit device 3, for example, when the voice coil 23 on the left side of the magnetic circuit device 3 moves to the left, the folded edge 223 is compressed. When the voice coil 23 on the left side of the magnetic circuit device 3 moves to the right, the folded edge 223 is stretched or restored to its original shape. With such a setting, through the elastic folded edge 223, it is beneficial for the voice coil 23 to drive the diaphragm 22 to vibrate, and the extrusion of the diaphragm 22 against the housing 1 can be reduced. In addition, by setting the diaphragm body 222 to have rigidity, the overall diaphragm 22 is not easily deformed, which is more beneficial for the vibration of the diaphragm 22 and also beneficial for the long-term use of the diaphragm 22.

[0053] According to some embodiments of the present invention, referring to Figure 1 and Figure 5 , the diaphragm device 2 includes a chassis 21. At least part of the chassis 21 is located in the inner cavity 12 and is fixedly connected to the housing 1, and the diaphragm 22 is provided on the chassis 21.

[0054] For example, in the examples of Figure 1 and Figure 5 , the diaphragm 22 and the chassis 21 are respectively approximately conical in shape. The conical height of the chassis 21 is greater than the conical height of the diaphragm 22. A part of the chassis 21 is located in the housing 1, and the outer peripheral edge of the chassis 21 is fixedly connected to the housing 1 at the edge of the opening 11. The diaphragm 22 is located on the side of the chassis 21 away from the other diaphragm device 2, and the outer peripheral edge of the diaphragm 22 is fixedly connected to the surface of the chassis 21.

[0055] With such a setting, the chassis 21 has the function of supporting and fixing the diaphragm 22. Thus, the chassis 21 can increase the structural strength of the diaphragm device 2, avoid damage to the diaphragm device 2, and further extend the service life of the diaphragm device 2. Moreover, it can also strengthen the overall structural strength of the speaker 100 and extend the service life of the speaker 100. In addition, the connection strength between the diaphragm device 2 and the housing 1 is strengthened by the chassis 21, thereby improving the use stability of the diaphragm device 2, avoiding the diaphragm device 2 from falling off the housing 1, and further improving the use stability of the speaker 100, which is beneficial for the long-term normal use of the speaker 100. Additionally, during the movement of the diaphragm device 2, the diaphragm 22 moves, and the diaphragm 22 pushes the air to emit sound, thereby improving the performance of the diaphragm 22 in use. Moreover, the diaphragm 22 is fixedly connected to the chassis 21, improving the use stability of the diaphragm 22 and avoiding the diaphragm 22 from falling off, which is beneficial for the long-term normal use of the speaker 100.

[0056] Further, referring to Figure 1 and Figure 2 , the basin frame 21 includes a basin frame body 211 and a mounting portion 212. The basin frame body 211 is located inside the inner cavity 12. The mounting portion 212 is connected to the edge of the basin frame body 211. The mounting portion 212 is fitted at the opening 11. The diaphragm 22 is provided at the mounting portion 212.

[0057] For example, in the examples of Figure 1 and Figure 2 , the mounting portion 212 is located on the side of the basin frame body 211 away from the other diaphragm device 2. The mounting portion 212 is fixedly connected to the side wall of the housing 1 at the opening 11. The mounting portion 212 is snap-fitted at the edge of the opening 11. The outer peripheral edge of the diaphragm 22 is fixedly connected to the mounting portion 212. Thus, through the arrangement of the mounting portion 212, it is convenient for the basin frame 21 to be fitted at the opening 11 and for the basin frame 21 and the housing 1 to be connected, thereby improving the installation efficiency of the diaphragm device 2 and the housing 1, and further improving the installation efficiency of the speaker 100. In addition, it is also convenient for the mounting portion 212 and the diaphragm 22 to be assembled, thereby improving the assembly efficiency of the diaphragm device 2.

[0058] According to some embodiments of the present invention, referring to Figure 2 , the mounting portion 212 includes a first mounting portion 2121 and a second mounting portion 2122.

[0059] Specifically, the first mounting portion 2121 is connected to the edge of the basin frame body 211. The first mounting portion 2121 is located between the outer peripheral edge of the diaphragm 22 and the side wall of the opening 11. One end of the second mounting portion 2122 is connected to the first mounting portion 2121. The other end of the second mounting portion 2122 extends in a direction away from the first mounting portion 2121 along the radial direction of the basin frame body 211. The second mounting portion 2122 faces the inner wall surface of the housing 1.

[0060] For example, in the example of Figure 2 , the cross-sectional shape of the first mounting portion 2121 is generally stepped. The side of the first mounting portion 2121 facing the diaphragm 22 (i.e., the inner side of the first mounting portion 2121) matches the edge structure of the diaphragm 22. The side of the first mounting portion 2121 facing away from the diaphragm 22 (i.e., the outer side of the first mounting portion 2121) abuts against the side wall of the opening 11. The above-mentioned one end of the second mounting portion 2122 is fixedly connected to the side of the first mounting portion 2121 facing away from the diaphragm 22. The second mounting portion 2122 is located inside the housing 1. The side of the second mounting portion 2122 away from the basin frame body 211 abuts against the inner side wall of the housing 1. The second mounting portion 2122 is detachably connected to the housing 1.

[0061] Thus, the first mounting portion 2121 can limit the position of the diaphragm 22, preventing the edge of the diaphragm 22 from moving towards the inside of the diaphragm device 2, thereby improving the stability of the diaphragm 22 during use. Moreover, the diaphragm 22 can be mounted on the first mounting portion 2121 from the outside of the diaphragm device 2, further reducing the difficulty of mounting the diaphragm 22 and facilitating the improvement of the mounting efficiency of the diaphragm device 2. In addition, the second mounting portion 2122 limits the position of the housing 1, preventing the chassis 21 from moving towards the outside of the housing 1, and the outside of the first mounting portion 2121 cooperates with the inside of the opening 11, preventing the first mounting portion 2121 from wobbling at the opening 11 along the circumferential direction of the first mounting portion 2121, thereby effectively improving the mounting stability of the diaphragm device 2. In addition, through the combined action of the first mounting portion 2121 and the second mounting portion 2122, the mounting portion 212 can be stably connected to the housing 1, improving the connection stability between the chassis 21 and the housing 1, and thus improving the stability of the diaphragm device 2 during use.

[0062] For example, the second mounting portion 2122 and the housing 1 can be connected by a plurality of fasteners (not shown in the figure), and the plurality of fasteners are arranged at intervals along the circumferential direction of the second mounting portion 2122. In the description of the present invention, "a plurality of" means two or more. The fasteners can be screws. Thus, the connection between the chassis 21 and the housing 1 is further strengthened, the connection is more secure, and the stability of the diaphragm device 2 during use is further improved. In addition, the installation and disassembly of the fasteners are simple, facilitating the maintenance and replacement of the diaphragm device 2, and the cost of using the fasteners is relatively low, further reducing the production cost of the speaker 100. However, it is not limited thereto.

[0063] According to some embodiments of the present invention, with reference to Figure 1 and Figure 5 , the diaphragm device 2 includes a bobbin 24 connecting the voice coil 23 and the chassis 21 respectively, and the bobbin 24 is used to maintain the linear movement of the voice coil 23.

[0064] For example, in Figure 1 , Figure 4 and Figure 5In the example, the suspension 24 is provided on the voice coil 23. One end of the voice coil 23 is connected to one side of the diaphragm 22 facing the chassis 21, and the other end of the voice coil 23 is located at the end of the chassis 21 away from the diaphragm 22, and there is a gap between the outer peripheral side of the other end of the voice coil 23 and the chassis 21. The suspension 24 is sleeved on the outer peripheral side of the voice coil 23. The suspension 24 is located between the diaphragm 22 and the chassis 21, and the outer peripheral edge of the suspension 24 is connected to the inner peripheral surface of the chassis body 211. With such a setting, when the voice coil 23 reciprocates inward and outward along the central axis of the voice coil 23, the voice coil 23 drives the diaphragm 22 to reciprocate, so that the diaphragm 22 pushes the air to move, thereby making the speaker 100 emit sound. Moreover, the cooperation between the voice coil 23 and the chassis 21 improves the reliability of the reciprocating movement of the voice coil 23, thus ensuring the normal use of the speaker 100. In addition, during the movement of the voice coil 23, the suspension 24 can move together with the voice coil 23 to enable the normal movement of the voice coil 23, and the suspension 24 has elasticity. After the voice coil 23 is powered off, the suspension 24 can drive the voice coil 23 back to its original position for the next use of the voice coil 23.

[0065] According to some embodiments of the present invention, referring to Figure 1 , the magnetic circuit device 3 is arranged in the inner cavity 12, and the magnetic circuit device 3 is clamped between two diaphragm devices 2. For example, in Figure 1 's example, the two diaphragm devices 2 are respectively connected to the two axial ends of the magnetic circuit device 3, and the two diaphragm devices 2 are symmetrically arranged with respect to the magnetic circuit device 3. With such a setting, the two diaphragm devices 2 share one magnetic circuit device 3, improving the utilization efficiency of the magnetic circuit device 3, so that the Q value of the speaker 100 is also correspondingly reduced, reducing the internal volume of the inner cavity 12, which is beneficial to reducing the volume of the speaker 100, facilitating the development of the speaker 100 towards miniaturization and ultrathinness, and also facilitating the use of the speaker 100 in smaller products, such as in vehicles and televisions. However, it is not limited to this.

[0066] Optionally, referring to Figure 3 , an installation groove 213 is formed on the chassis 21. The two ends of the magnetic circuit device 3 are respectively fitted into the installation grooves 213 of the two diaphragm devices 2. For example, in Figure 3 's example, the installation groove 213 is formed on the side of the chassis 21 away from the diaphragm 22. With such a setting, it is convenient to install the magnetic circuit device 3 on the chassis 21, thereby improving the installation efficiency of the magnetic circuit device 3 on the chassis 21, and further improving the installation efficiency of the speaker 100. In addition, the side wall of the installation groove 213 limits the end of the magnetic circuit device 3 to prevent the magnetic circuit device 3 from falling off the chassis 21, improving the assembly stability of the two diaphragm devices 2 and the magnetic circuit device 3, and thus further improving the use stability of the speaker 100.

[0067] According to some embodiments of the present invention, referring to Figure 5 andFigure 6 Among them, the two diaphragm devices 2 are respectively a first diaphragm device 26 and a second diaphragm device 27. At both ends of the magnetic circuit device 3, a first fitting groove 311 and a second fitting groove 312 are respectively formed corresponding to the first diaphragm device 26 and the second diaphragm device 27. The end of the voice coil 23 of the first diaphragm device 26 is movably fitted in the first fitting groove 311, and the end of the voice coil 23 of the second diaphragm device 27 is movably fitted in the second fitting groove 312.

[0068] For example, in the examples of Figure 3 and Figure 6 , one end of the voice coil 23 away from the magnetic circuit device 3 is fixedly connected to the surface of the diaphragm 22 facing the chassis 21. Taking the diaphragm device 2 on the left side of the magnetic circuit device 3 as the first diaphragm device 26 and the diaphragm device 2 on the right side of the magnetic circuit device 3 as the second diaphragm device 27 as an example for illustration. A first fitting groove 311 is formed at the left end of the magnetic circuit device 3, and one end of the voice coil 23 of the first diaphragm device 26 away from the diaphragm 22 is movably fitted in the first fitting groove 311 to move along the axial direction of the magnetic circuit device 3. A second fitting groove 312 is formed at the right end of the magnetic circuit device 3, and one end of the voice coil 23 of the second diaphragm device 27 away from the diaphragm 22 is movably fitted in the second fitting groove 312 to move along the axial direction of the magnetic circuit device 3. There is a gap between the voice coil 23 and the side wall of the corresponding first fitting groove 311 or second fitting groove 312, and the first fitting groove 311 and the second fitting groove 312 extend along the circumferential direction of the magnetic circuit device 3.

[0069] After an electric current is passed through the voice coil 23, the voice coil 23 interacts with the magnetic circuit device 3, causing the voice coil 23 to move left or right along the axis of the voice coil 23, thereby driving the diaphragm 22 to move and emit sound. With such a setting, the first fitting groove 311 has a guiding effect on the voice coil 23 of the first diaphragm device 26, and the second fitting groove 312 has a guiding effect on the voice coil 23 of the second diaphragm device 27, effectively ensuring that the voice coil 23 can move left or right along the axis of the voice coil 23, and further enabling the diaphragm device 2 to be used normally for a long time. Moreover, it is also convenient for the assembly of the voice coil 23 and the magnetic circuit device 3, thereby further improving the production efficiency of the speaker 100. In addition, the first fitting groove 311 and the second fitting groove 312 have a limiting effect on the voice coil 23, preventing the voice coil 23 from falling off the magnetic circuit device 3 during the movement process, thereby improving the use stability of the voice coil 23 and further extending the service life of the diaphragm device 2. It should be noted that the cross-sectional areas of the first fitting groove 311 and the second fitting groove 312 can be the same or different, that is, the cross-sectional areas of the two voice coils 23 can also be the same or different, and are specifically set according to actual use conditions.

[0070] According to other embodiments of the present invention, referring to Figure 6, the magnetic circuit device 33 includes a first magnetic circuit device 32 and a second magnetic circuit device 33. The first magnetic circuit device 32 is engaged with the chassis 21 of the first diaphragm device 2, and one end of the voice coil 23 of the first diaphragm device 2 away from the corresponding diaphragm 22 is engaged on the first magnetic circuit device 32. The second magnetic circuit device 33 is engaged with the chassis 21 of the second diaphragm device 2, and one end of the voice coil 23 of the second diaphragm device 2 away from the corresponding diaphragm 22 is engaged on the second magnetic circuit device 33. Thus, by providing the separate first magnetic circuit device 32 and second magnetic circuit device 33, the machining accuracy of the first magnetic circuit device 32 and the second magnetic circuit device 33 is improved, which is beneficial to the assembly of the first magnetic circuit device 32 and the first diaphragm device 2 and the assembly of the second magnetic circuit device 33 and the second diaphragm device 2, and the assembly efficiency is high. Of course, the separate first magnetic circuit device 32 and second magnetic circuit device 33 can be connected into an integral structural member to reduce the space occupied by the magnetic circuit device 3 in the housing 1, which is beneficial to the compact design of the speaker 100 and makes the use and installation of the speaker 100 more convenient.

[0071] Optionally, the magnetic circuit device 3 further includes a magnet 34. The first magnetic circuit device 32 includes a first washer 321 and a U-shaped iron 322. The first washer 321 is connected to one axial end of the magnet 34, and the U-shaped iron 322 is disposed on the outer peripheral side of the magnet 34. The first washer 321 and the U-shaped iron 322 jointly define a first fitting groove 311, and one end of the voice coil 23 of the first diaphragm device 2 close to the magnetic circuit device 3 is in clearance fit in the first fitting groove 311. The second magnetic circuit device 33 includes a second washer 331. The second washer 331 is connected to the other axial end of the magnet 34, and the second washer 331 is located on the inner peripheral side of the end of the U-shaped iron 322 away from the first washer 321. The U-shaped iron 322 and the second washer 331 jointly define a second fitting groove 312, and one end of the voice coil 23 of the second diaphragm device 2 close to the magnetic circuit device 3 is in clearance fit in the second fitting groove 312.

[0072] With such a setting, after the magnet 34 is energized, it can generate a magnetic field. The first magnetic circuit device 32 and the second magnetic circuit device 33 can conduct magnetism, so that the voice coil 23 of the first diaphragm device 2 located within the magnetic field can move. At the same time, the voice coil 23 of the second diaphragm device 2 located at the other end of the magnetic circuit device 3 can also move, thus ensuring the reliability of use of the first diaphragm device 2 and the second diaphragm device 2. In addition, through the first magnetic circuit device 32 and the second magnetic circuit device 33, it can be ensured that the corresponding voice coil 23 is within the magnetic field, which is beneficial to the movement of the voice coil 23. Additionally, the structures of the first magnetic circuit device 32 and the second magnetic circuit device 33 are simple and convenient for production and processing. Optionally, the inner diameter of the second fitting groove 312 is greater than the inner diameter of the first fitting groove 311, and the diameter of the voice coil 23 of the corresponding second diaphragm device 2 is greater than the diameter of the voice coil 23 of the first diaphragm device 2, but not limited to this. Of course, the inner diameters of the first fitting groove 311 and the second fitting groove 312 can be adjusted correspondingly according to the diameter of the voice coil 23 to be more beneficial to the use of the loudspeaker 100.

[0073] According to some embodiments of the present invention, referring to Figure 5 and Figure 6 , the diaphragm device 2 includes a dust cap 25. The diaphragm 22 is provided with a through hole 221 corresponding to the voice coil 23. One end of the voice coil 23 away from the diaphragm 22 is fitted in the through hole 221, and the dust cap 25 is provided on the side of the diaphragm 22 away from the voice coil 23 and covers the through hole 221.

[0074] For example, in the examples of Figure 5 and Figure 6 , a through hole 221 is formed at the central position of the diaphragm 22. One end of the voice coil 23 away from the magnetic circuit device 3 is fitted in the through hole 221, and the dust cap 25 is located outside the diaphragm 22 and covers the through hole 221. The outer peripheral edge of the dust cap 25 is connected to the surface of the diaphragm 22 on the side away from the chassis 21, and the dust cap 25 covers the inside of the voice coil 23. Thus, the through hole 221 has a limiting effect on the voice coil 23, which can ensure that the voice coil 23 moves linearly along the axis of the voice coil 23, is not easily offset, and improves the movement reliability of the voice coil 23. In addition, the dust cap 25 can prevent dust or debris from entering the voice coil 23 and affecting the normal movement of the voice coil 23, so that the diaphragm device 2 can be used normally for a long time.

[0075] Optionally, referring to Figure 1 , the two openings 11 are respectively formed on the two side surfaces in the thickness direction of the housing 1. For example, in Figure 1In the example, two openings 11 are respectively formed on the left and right surfaces of the housing 1. Thus, it is convenient to install the two corresponding diaphragm devices 2 at the two openings 11, so that the arrangement of the housing 1 and the two diaphragm devices 2 is reasonable and convenient for installation. In addition, the two openings 11 are arranged in the thickness direction, which helps the two diaphragm devices 2 to be arranged more compactly, thus helping to further reduce the volume of the speaker 100.

[0076] A vehicle (not shown in the figure) according to an embodiment of the second aspect of the present invention includes a vehicle body (not shown in the figure) and a speaker 100, and the speaker 100 is the speaker 100 according to the above-mentioned first aspect embodiment of the present invention, and the speaker 100 is provided on the vehicle body.

[0077] In the vehicle according to the present invention, by adopting the above-mentioned speaker 100, the purity of the sound in the vehicle is improved, and the height of the sound is also improved. Moreover, the volume of the speaker 100 is small, which reduces the installation difficulty of the speaker 100 on the vehicle body, thereby improving the installation efficiency of the vehicle.

[0078] According to some embodiments of the present invention, a driver's seat (not shown in the figure) and a passenger seat (not shown in the figure) are provided in the vehicle body, and the speaker 100 is located between the driver's seat and the passenger seat. With this arrangement, compared with the conventional technology in which the speaker is placed at the rear of the vehicle body, the sound emitted by the speaker 100 can be directly transmitted to the positions where the driver and the passenger are located, avoiding the reflection and refraction of the sound in the vehicle body, and avoiding the change of the sound phase and the sound image positioning, thereby improving the purity of the sound heard by the driver and the passenger and improving the sound quality of the heard sound.

[0079] The other components and operations of the speaker 100 and the vehicle according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0080] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "thickness", "left", "right", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0081] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the illustrative representations of the above terms do not necessarily refer to the same embodiment or example.

[0082] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A loudspeaker, characterized in that: include: A shell, wherein openings are respectively formed on two side surfaces of the shell that are opposite to each other; Two diaphragm devices, each of which includes a diaphragm, a voice coil and a spring, the diaphragms of the two diaphragm devices are respectively connected to the shell to cover the two openings respectively, the two diaphragm devices and the shell together define an inner cavity, the diaphragm and the spring are respectively connected to the voice coil, the voice coil drives the diaphragm to vibrate relative to the shell, the spring is used to maintain the voice coil in a straight line motion, and the two diaphragm devices are suitable for outputting sound in a direction away from each other.

2. The loudspeaker according to claim 1, characterized in that The loudspeaker comprises a magnetic circuit device, the voice coil is fixed to the diaphragm, and the magnetic circuit device is used to drive the voice coil to move.

3. The loudspeaker according to claim 2, characterized in that The voice coil cooperates with the magnetic circuit device to drive the diaphragm to vibrate relative to the shell.

4. The loudspeaker according to claim 2, characterized in that The diaphragm device comprises a basin frame, at least a part of which is located in the inner cavity and fixedly connected to the shell, the diaphragm is arranged on the basin frame, and the basin frame is connected to the elastic wave.

5. The loudspeaker according to claim 4, characterized in that The basin frame comprises: A basin frame body, wherein the basin frame body is located in the inner cavity; The mounting portion is connected to the edge of the basin frame body, the mounting portion is matched at the opening, and the diaphragm is arranged at the mounting portion.

6. The loudspeaker according to claim 5, characterized in that The installation part comprises: A first mounting portion, the first mounting portion is connected to an edge of the basin frame body, and the first mounting portion is located between an outer peripheral edge of the diaphragm and a side wall of the opening; A second mounting portion, one end of which is connected to the first mounting portion, the other end of which extends in a radial direction of the basin frame body in a direction away from the first mounting portion, and the second mounting portion is opposite to the inner wall surface of the shell.

7. The loudspeaker according to claim 4, characterized in that The magnetic circuit device is clamped between the two diaphragm devices.

8. The loudspeaker according to claim 7, characterized in that A mounting groove is formed on the basin frame; The two ends of the magnetic circuit device are respectively matched in the mounting grooves of the two diaphragm devices.

9. The loudspeaker according to claim 7, characterized in that The two diaphragm devices are respectively a first diaphragm device and a second diaphragm device, and two ends of the magnetic circuit device are respectively formed with a first matching groove and a second matching groove corresponding to the first diaphragm device and the second diaphragm device; The end of the voice coil of the first diaphragm device is movably engaged in the first engagement groove, and the end of the voice coil of the second diaphragm device is movably engaged in the second engagement groove.

10. The loudspeaker according to any one of claims 2 to 9, characterized in that: The diaphragm device includes a dust cap, the diaphragm is provided with a through hole corresponding to the voice coil, one end of the voice coil away from the diaphragm fits in the through hole, and the dust cap is arranged on a side of the diaphragm away from the voice coil and covers the through hole.

11. A vehicle, characterized in that: include: Vehicle body; A speaker, wherein the speaker is the speaker according to any one of claims 1-10, and the speaker is arranged on the vehicle body.

12. The vehicle according to claim 11, characterized in that A driving seat and a co-pilot seat are provided in the vehicle body, and the speaker is located between the driving seat and the co-pilot seat.

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