Vehicle-mounted speaker and vehicle-mounted audio system

Abstract

The utility model belongs to the technical field of loudspeakers, and discloses a vehicle-mounted loudspeaker and a vehicle-mounted audio system. It includes a rear shell, a fixed structure, a magnetic structure, a vibration structure and a front shell. Among them, the fixed structure includes a fixed basin frame and a support sheet, the fixed basin frame is detachably connected to the rear shell, and the support sheet is fixed on the fixed basin frame; the magnetic structure is embedded in the fixed basin frame, and a magnetic gap is arranged on the magnetic structure; the vibration structure includes a voice coil and a diaphragm, the voice coil is inserted on the support sheet, and the position is adjustable and inserted in the magnetic gap, and the diaphragm is designed to be integrally formed, which can meet the requirements of the sound pressure level and frequency width of the loudspeaker. The front shell is detachably connected to the fixed basin frame and is stacked on the diaphragm. A plurality of stepped sound guide holes are arranged at intervals along the circumference of the front shell, which can effectively compress and enhance the sound pressure level of the middle and high frequencies, so that the loudspeaker can meet the laws and regulations on high sound pressure levels of horn horns, and further meet the various needs of pedestrian warning sounds, horn horns, and vehicle external prompt sounds.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a vehicle-mounted loudspeaker and a vehicle-mounted sound system. Background Art

[0002] A speaker is an acoustic component used to convert sound wave electrical signals into sound signals. Cars need to be equipped with speakers for pedestrian warning sounds, speakers for horn sounds, and speakers that can restore multiple types of sounds according to needs.

[0003] In the prior art, a low-speed warning sound system is generally used to issue pedestrian warning sounds. Generally, a loudspeaker with a sound pressure level of about 80±5dB and a frequency between 500Hz-2000Hz is selected; and the loudspeaker used for honking is a high-frequency, high-sound pressure level loudspeaker with a sound pressure level of 105dB-118dB. In addition, according to the "Performance Requirements and Test Methods for Horns Used in Motor Vehicles", the A-weighted sound pressure level at a distance of 2 meters from the horn shall not exceed 118dB. In addition, the sound pressure level in the frequency band of 1800Hz-3550Hz must be greater than the sound pressure level of each component with a frequency exceeding 3550hz, and in any case, the sound pressure level for horns used for m and n class vehicles and motorcycles with a power greater than 7KW should be at least 105dB. At present, the external sound systems on the market generally use independent loudspeakers to realize pedestrian warning sounds, horns and other external warning sounds, which are complex in structure and inconvenient to install.

[0004] Therefore, there is an urgent need for a vehicle-mounted speaker and a vehicle-mounted audio system that can meet the multi-functional sound production requirements. Utility Model Content

[0005] The utility model aims to provide a vehicle-mounted speaker and a vehicle-mounted audio system, which have the characteristics of low resonance frequency, high sound pressure level and wide working frequency band, and can meet various usage requirements of pedestrian warning sound, horn horn and external vehicle prompt sound.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] In one aspect, a vehicle-mounted speaker is provided, comprising:

[0008] Back shell;

[0009] The fixing structure comprises a fixing frame and a support sheet, wherein the fixing frame is detachably connected to the rear shell, and the support sheet is fixed to the fixing frame;

[0010] A magnetic conductive structure is embedded in the fixed basin frame, and a magnetic gap is provided on the magnetic conductive structure;

[0011] A vibration structure, comprising a voice coil and a diaphragm, wherein the voice coil is configured to be electrically connected to an external power supply, the voice coil is inserted on the support sheet, and is insertable in the magnetic gap in an adjustable manner; the diaphragm comprises a folding ring portion, a vibration portion, and a dustproof portion connected as a whole from outside to inside, the folding ring portion abuts on the fixed basin frame, the dustproof portion abuts on the voice coil, and the voice coil can vibrate after being energized, and can drive the vibration portion to vibrate;

[0012] The front shell is detachably connected to the fixed basin frame and is stacked on the diaphragm. A plurality of stepped sound guide holes are spaced apart along the circumferential direction on the front shell.

[0013] As an optional solution for the vehicle-mounted speaker, the diaphragm is made of glass fiber material or carbon fiber material, and the surface is coated with damping glue.

[0014] As an optional solution for the vehicle-mounted speaker, a plurality of spherical grooves are provided on a side of the front shell facing the diaphragm, and the plurality of spherical grooves are distributed at intervals along the circumferential direction.

[0015] As an optional solution for the car speakers, padding is also included;

[0016] A limiting groove is arranged on a side of the front shell away from the diaphragm, and the padding cotton is embedded in the limiting groove.

[0017] As an optional solution for the vehicle-mounted speaker, a plurality of connection parts are arranged at intervals along the circumferential direction on the outer side of the fixed basin frame, and each of the connection parts is provided with a connection hole.

[0018] As an optional solution for the vehicle-mounted speaker, the fixed basin frame is also provided with an installation channel for passing a wire connected between the voice coil and the external power supply.

[0019] As an optional solution for the vehicle-mounted speaker, the magnetic conductive structure includes a magnetic conductive bowl and a magnetic conductive component. The magnetic conductive bowl is provided with a receiving cavity. The magnetic conductive component is embedded in the receiving cavity and forms the magnetic gap with the side wall of the receiving cavity.

[0020] The fixed basin frame is provided with a clamping groove, and the magnetic bowl is clamped in the clamping groove.

[0021] As an optional solution for the vehicle-mounted speaker, a plurality of air holes are provided at intervals along the circumference of the rear shell, and a waterproof breathable membrane is embedded in each of the air holes.

[0022] As an optional solution for the vehicle-mounted speaker, a plurality of sound-absorbing grooves are provided on the inner wall of the rear shell.

[0023] On the other hand, a vehicle audio system is provided, comprising any of the vehicle speakers described above.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a vehicle-mounted speaker and a vehicle-mounted audio system, which includes a rear shell, a fixed structure, a magnetic structure, a vibration structure and a front shell. The fixed structure includes a fixed basin frame and a support plate, the fixed basin frame is detachably connected to the rear shell, and the support plate is fixed on the fixed basin frame; the magnetic structure is embedded in the fixed basin frame, and a magnetic gap is provided on the magnetic structure; the vibration structure includes a voice coil and a diaphragm, the voice coil is passed through the support plate, and the position is adjustable and inserted in the magnetic gap, and the diaphragm includes a folding ring part, a vibration part and a dustproof part connected as a whole from the outside to the inside, the folding ring part abuts on the fixed basin frame, and the dustproof part abuts on the voice coil. The one-piece design can meet the requirements of the sound pressure level and frequency width of the speaker.

[0026] When the electrical signal is passed into the voice coil, the voice coil can vibrate in the magnetic gap and drive the diaphragm to vibrate together, thereby resonating with the surrounding air and making sound. At the same time, due to the limiting effect of the support plate, the voice coil can be ensured to move vertically in the magnetic gap, limiting the horizontal movement of the voice coil. The front shell is detachably connected to the fixed basin frame and stacked on the diaphragm. A plurality of stepped sound guide holes are arranged at intervals along the circumference of the front shell, which can effectively compress and enhance the sound pressure level of the mid-high frequency, so that the speaker can meet the laws and regulations on high sound pressure levels of horn horns, and thus meet the various needs of pedestrian warning sounds, horn horns, and external vehicle prompt sounds; at the same time, the stepped sound guide holes can effectively prevent coarse sand and gravel from impacting the internal structure of the speaker, and can also disperse water pressure to improve its waterproof level. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of the vehicle-mounted speaker provided by the specific implementation mode of the utility model;

[0028] Figure 2 It is an exploded view of the vehicle-mounted speaker provided by the specific implementation mode of the utility model;

[0029] Figure 3 is a cross-sectional view of a vehicle-mounted speaker provided by a specific embodiment of the utility model;

[0030] Figure 4 It is a bottom view of the front shell provided by the specific embodiment of the utility model;

[0031] Figure 5 It is a structural schematic diagram of a fixed basin frame provided by a specific embodiment of the utility model;

[0032] Figure 6 It is a structural schematic diagram of a rear shell provided by a specific implementation method of the utility model.

[0033] In the figure:

[0034] 1. Back shell; 10. Ventilation hole; 11. Sound absorbing groove;

[0035] 2. Fixed structure; 21. Fixed basin frame; 211. Connecting part; 212. Connecting hole; 213. Mounting channel; 214. Snap-in groove; 22. Supporting piece;

[0036] 3. Magnetic conductive structure; 30. Magnetic gap; 31. Magnetic conductive bowl; 310. Accommodating cavity; 32. Magnetic conductive component; 321. Magnetic steel; 322. Magnetic conductive sheet; 3220. Heat dissipation hole;

[0037] 4. Vibration structure; 41. Voice coil; 410. Wire; 42. Diaphragm; 421. Folding ring; 422. Vibration part; 423. Dustproof part;

[0038] 5. front shell; 50. stepped sound guide hole; 51. spherical groove; 52. limit groove;

[0039] 6. Pad with cotton. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0045] like Figures 1 to 6 As shown, this embodiment provides a vehicle-mounted speaker, which includes a rear shell 1, a fixed structure 2, a magnetic structure 3, a vibration structure 4 and a front shell 5. Among them, the fixed structure 2 includes a fixed basin frame 21 and a support sheet 22, the fixed basin frame 21 is detachably connected to the rear shell 1, and the support sheet 22 is fixed on the fixed basin frame 21; the magnetic structure 3 is embedded in the fixed basin frame 21, and a magnetic gap 30 is provided on the magnetic structure 3; the vibration structure 4 includes a voice coil 41 and a diaphragm 42, the voice coil 41 is penetrated on the support sheet 22, and the position is adjustable and inserted in the magnetic gap 30, and the diaphragm 42 includes a folding ring part 421, a vibration part 422 and a dustproof part 423 connected as one from the outside to the inside, the folding ring part 421 abuts on the fixed basin frame 21, and the dustproof part 423 abuts on the voice coil 41. The design of the one-piece molding of the diaphragm 42 can meet the requirements of the sound pressure level and frequency width of the speaker.

[0046] When the electrical signal is passed into the voice coil 41, the voice coil 41 can vibrate in the magnetic gap 30, and drive the diaphragm 42 to vibrate together, thereby resonating with the surrounding air to produce sound. At the same time, due to the limiting effect of the support plate 22, the voice coil 41 can be ensured to move vertically in the magnetic gap 30, and the horizontal movement of the voice coil 41 can be limited. The front shell 5 is detachably connected to the fixed basin frame 21 and is stacked on the diaphragm 42. A plurality of stepped sound guide holes 50 are arranged at intervals along the circumference of the front shell 5, which can effectively compress and enhance the sound pressure level of the middle and high frequencies, so that the speaker can meet the laws and regulations on high sound pressure levels of whistle speakers; at the same time, the stepped sound guide holes 50 can effectively prevent coarse sand and gravel from impacting the internal structure of the speaker, and can also disperse water pressure to improve its waterproof level.

[0047] Specifically, in this embodiment, a first snap-in plate is convexly provided on the side of the rear shell 1 facing the fixed basin frame 21, and the first snap-in plate extends in the circumferential direction; accordingly, a first snap-in groove 214 is provided on the side of the fixed basin frame 21 facing the rear shell 1, and the first snap-in plate is snapped into the first snap-in groove 214 to achieve a detachable connection between the rear shell 1 and the fixed basin frame 21. The fixed basin frame 21 adopts a hollow structure, which can reduce the use of materials and reduce the weight of the speaker. A second snap-in groove 214 is provided on the side of the fixed basin frame 21 facing the front shell 5, and accordingly, a second snap-in plate is convexly provided on the side of the front shell 5 facing the fixed basin frame 21, and the second snap-in plate is snapped into the second snap-in groove 214 to achieve a detachable connection between the front shell 5 and the fixed basin frame 21.

[0048] Optionally, the support piece 22 is wavy in shape and has a certain elasticity, and can move vertically synchronously with the vertical vibration of the voice coil 41 .

[0049] Optionally, the front shell 5 adopts a heel-shaped design with the diaphragm 42 to effectively compress and enhance the sound pressure level of the mid- and high-frequency, so that the sensitivity performance index of the speaker meets the laws and regulations on high sound pressure levels of horn speakers.

[0050] Optionally, the speaker provided in this embodiment is not limited to being applicable to a single set of voice coils, but may also be applicable to multiple sets of voice coils to meet the user's requirements for using different modules, and has high applicability.

[0051] Exemplarily, the size and number of the stepped sound guide holes 50 need to be set as required according to the size of the speaker.

[0052] Specifically, the main performance parameters of the speaker provided in this embodiment are: the speaker resonance frequency is 500Hz, the sound pressure level reaches 98dB (1m / w@500Hz-3550Hz), the effective frequency range is 500Hz-3550Hz. The waterproof level can reach dynamic IP69K and static IPX7.

[0053] Optionally, refer to Figure 2 The vehicle speaker further includes a pad 6. A limiting groove 52 is provided on the side of the front shell 5 away from the diaphragm 42, and the pad 6 is embedded in the limiting groove 52. The setting of the pad 6 can further enhance the fixing effect on the front shell 5. At the same time, the pad 6 is made of a polyurethane material commonly used in the art and has a certain shock absorption effect.

[0054] Optionally, the diaphragm 42 is made of glass fiber material or carbon fiber material and coated with damping glue on the surface, which has the advantages of light weight and good rigidity to meet the requirements of the sound pressure level and frequency width of the speaker, while meeting the strict waterproof requirements of the speaker installed in the special environment of the car.

[0055] Alternatively, if Figure 4As shown, a plurality of spherical grooves 51 are provided on one side of the front shell 5 facing the diaphragm 42, and the plurality of spherical grooves 51 are distributed at intervals along the circumferential direction. The spherical grooves 51 can play the role of Helmholtz holes, enhance the resonance effect of the air, and improve the sound pressure level and frequency width of the speaker to meet various sound requirements.

[0056] For example, continue to refer to Figure 4 In this embodiment, two circles of spherical grooves 51 are provided on the front shell 5; in other embodiments, the number and quantity of the spherical grooves 51 can be set as needed.

[0057] Alternatively, if Figure 5 As shown, a plurality of connection parts 211 are arranged at intervals along the circumferential direction on the outer side of the fixed frame 21, and each connection part 211 is provided with a connection hole 212. The connection hole 212 is used to pass a fastener to achieve a detachable connection of the speaker. By way of example, in this embodiment, three connection parts 211 are arranged on the outer side of the fixed frame 21; the fasteners are bolts or screws commonly used in the art.

[0058] Optionally, continue to refer to Figure 5 The fixed basin frame 21 is also provided with an installation channel 213 for passing a wire 410 connected between the voice coil 41 and an external power source. While accommodating the wire 410, it can also provide a certain degree of protection for the wire 410.

[0059] Optionally, refer to Figure 2 and Figure 3 The magnetic structure 3 includes a magnetic bowl 31 and a magnetic component 32. The magnetic bowl 31 is provided with a receiving cavity 310, and the magnetic component 32 is embedded in the receiving cavity 310, and a magnetic gap 30 is formed with the side wall of the receiving cavity 310. The fixed basin frame 21 is provided with a clamping groove 214, and the magnetic bowl 31 is clamped in the clamping groove 214. When the voice coil 41 is supplied with current, the magnetic field generated by the current interacts with the magnetic field of the magnetic structure 3, so that the voice coil 41 vibrates vertically in the magnetic gap 30, thereby driving the diaphragm 42 to vibrate, so as to resonate with the surrounding air and produce sound.

[0060] Specifically, the magnetic assembly 32 includes a magnetic steel 321 and a magnetic sheet 322, and the magnetic sheet 322 is stacked on the magnetic steel 321. Heat dissipation holes 3220 are provided on the magnetic bowl 31 and the magnetic sheet 322 to facilitate heat dissipation of the magnetic steel 321 and prevent the magnetic assembly 32 from being damaged due to overheating.

[0061] For example, in this embodiment, a heat dissipation hole 3220 is provided on each of the magnetic conductive bowl 31 and the magnetic conductive sheet 322 ; in other embodiments, a plurality of heat dissipation holes 3220 may be provided.

[0062] Alternatively, if Figure 6As shown, a plurality of air holes 10 are arranged at intervals along the circumference of the rear shell 1, and a waterproof breathable membrane is embedded in each air hole 10. The above arrangement ensures air circulation inside the speaker while effectively preventing water from entering the speaker, thereby improving the waterproof effect.

[0063] Illustratively, in this embodiment, only one ventilation hole 10 is provided on the rear shell 1; in other embodiments, a plurality of ventilation holes 10 may be provided.

[0064] Optionally, continue to refer to Figure 6 A plurality of sound absorbing grooves 11 are also provided on the inner wall of the rear shell 1. The sound absorbing grooves 11 can absorb standing waves, prevent the attenuation of sound caused by phase difference, and thus ensure the sound effect of the speaker.

[0065] Illustratively, in this embodiment, the sound absorbing groove 11 is hexagonal; in other embodiments, the sound absorbing groove 11 may also be other shapes.

[0066] On the other hand, this embodiment further provides a vehicle audio system, including the vehicle speaker as described above, which has all the beneficial effects of the vehicle speaker as described above and will not be described in detail here.

[0067] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A vehicle-mounted speaker, characterized in that: include: rear housing (1); The fixing structure (2) comprises a fixing basin frame (21) and a support piece (22), wherein the fixing basin frame (21) is detachably connected to the rear shell (1), and the support piece (22) is fixedly mounted on the fixing basin frame (21); A magnetic conductive structure (3) is embedded in the fixed basin frame (21), and a magnetic gap (30) is provided on the magnetic conductive structure (3); A vibration structure (4), comprising a voice coil (41) and a diaphragm (42), wherein the voice coil (41) is configured to be electrically connected to an external power source, the voice coil (41) is inserted into the support plate (22), and is insertable into the magnetic gap (30) in an adjustable manner; the diaphragm (42) comprises a folding ring portion (421), a vibration portion (422), and a dustproof portion (423) which are connected as a whole from the outside to the inside, the folding ring portion (421) abuts against the fixed basin frame (21), and the dustproof portion (423) abuts against the voice coil (41); the voice coil (41) can vibrate after being energized, and can drive the vibration portion (422) to vibrate; The front shell (5) is detachably connected to the fixed basin frame (21) and is stacked on the diaphragm (42). A plurality of stepped sound guide holes (50) are spaced apart along the circumferential direction on the front shell (5).

2. The vehicle-mounted speaker according to claim 1, characterized in that: The diaphragm (42) is made of glass fiber material or carbon fiber material, and the surface is coated with damping glue.

3. The vehicle-mounted speaker according to claim 1, characterized in that: A plurality of spherical grooves (51) are provided on a side of the front shell (5) facing the diaphragm (42), and the plurality of spherical grooves (51) are distributed at intervals along the circumferential direction.

4. The vehicle-mounted speaker according to claim 1, characterized in that: Also includes a padding (6); A limiting groove (52) is provided on a side of the front shell (5) facing away from the diaphragm (42), and the padding (6) is embedded in the limiting groove (52).

5. The vehicle-mounted speaker according to claim 1, characterized in that: A plurality of connection parts (211) are arranged at intervals along the circumferential direction on the outer side of the fixed basin frame (21), and each of the connection parts (211) is provided with a connection hole (212).

6. The vehicle-mounted speaker according to claim 5, characterized in that: The fixed basin frame (21) is also provided with a mounting channel (213) for passing a wire (410) connected between the voice coil (41) and the external power source.

7. The vehicle-mounted speaker according to claim 1, characterized in that: The magnetic conductive structure (3) comprises a magnetic conductive bowl (31) and a magnetic conductive component (32); a receiving cavity (310) is provided on the magnetic conductive bowl (31); the magnetic conductive component (32) is embedded in the receiving cavity (310) and forms the magnetic gap (30) with the side wall of the receiving cavity (310); The fixed basin frame (21) is provided with a clamping groove (214), and the magnetic bowl (31) is clamped in the clamping groove (214).

8. The vehicle-mounted speaker according to claim 1, characterized in that: The rear shell (1) is provided with a plurality of air holes (10) spaced apart in the circumferential direction, and a waterproof and breathable membrane is embedded in each of the air holes (10).

9. The vehicle-mounted speaker according to claim 1, characterized in that: A plurality of sound absorbing grooves (11) are provided on the inner wall of the rear shell (1).

10. A vehicle audio system, characterized in that: It comprises the vehicle-mounted speaker as described in any one of claims 1-9.

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