In-vehicle outdoor speaker

Abstract

An in-vehicle outdoor speaker, comprising: a basin frame (1), a positioning support sheet (2), and a magnetic circuit (3). The basin frame (1) is provided with a magnetic circuit connecting part (11). The magnetic circuit (3) is disposed on the magnetic circuit connecting part (11). The in-vehicle outdoor speaker further comprises a stopper (4), a material of the stopper (4) is a buffer material so as to shrink and deform when subjected to an external force, and the stopper (4) is provided with an upper end portion facing the positioning support sheet (2) and a lower end portion facing the magnetic circuit (3) or the magnetic circuit connecting part (11). When the in-vehicle outdoor speaker is in a normal working state, a distance is provided between the stopper (4) and the positioning support sheet (2), or a distance is provided between the stopper (4) and the magnetic circuit (3) or the magnetic circuit connecting part (11), and when in an overload working state, the stopper (4) is pressed between the positioning support sheet (2) and the magnetic circuit (3) or the magnetic circuit connecting part (11). In the overload working state, the stopper (4) is pressed between the positioning support sheet (2) and the magnetic circuit (3) or the magnetic circuit connecting part (11), and the positioning support sheet (2) can be supported, to prevent a vibration system of the speaker from being irreversibly damaged due to excessive deformation.

Description

Car outdoor speakers Related applications

[0001] This application claims priority to Chinese patent application No. CN 2023223686246, filed on September 1, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure belongs to the field of automobile speakers and relates to an in-vehicle outdoor speaker. Background Art

[0003] The function of a speaker is to convert electrical signals into sound signals. It is widely used in car audio systems and can provide a better music environment for car owners and passengers. At present, car outdoor speakers usually include a basin frame, voice coil, sound cone and magnetic circuit system. Since the speaker is installed outside the car, it needs to meet requirements such as immersion in water. Otherwise, the sound cone will be squeezed and excessively deformed when immersed in water, resulting in irreversible damage. For example, Chinese patent CN215663749U discloses a car speaker with dustproof and waterproof functions, which is provided with a rain cover to achieve waterproof performance. However, even if a rain cover is provided, rain will still fall in, and the accumulated rainwater will form an extrusion force on the vibration system of the speaker. The vibration system of the speaker will be squeezed beyond the normal working displacement and excessively deformed, resulting in irreversible damage. Summary of the Invention

[0004] The present disclosure relates to a vehicle-mounted outdoor speaker, which can prevent the vibration system of the speaker from being irreversibly damaged due to excessive deformation.

[0005] One aspect of the present disclosure provides a vehicle-mounted outdoor speaker configured to be installed outside a car, the vehicle-mounted outdoor speaker comprising:

[0006] a basin frame having a magnetic circuit connection portion;

[0007] Positioning support piece;

[0008] a magnetic circuit disposed on the magnetic circuit connecting portion; and

[0009] a stopper made of a buffer material to allow contraction and deformation when subjected to an external force, the stopper having an upper end facing the positioning support and a lower end facing the magnetic circuit or the magnetic circuit connecting portion;

[0010] In which, the vehicle-mounted outdoor speaker has a normal working state and an overload working state. When the vehicle-mounted outdoor speaker is in the normal working state, the limiter and the positioning support plate have a distance, or the limiter and the magnetic circuit or the magnetic circuit connection part have a distance; when the vehicle-mounted outdoor speaker is in the overload working state, the limiter is squeezed between the positioning support plate and the magnetic circuit or the positioning support plate and the magnetic circuit connection part.

[0011] In some embodiments, the lower end portion of the limiter is connected to the magnetic circuit or the magnetic circuit connecting portion.

[0012] In some embodiments, the magnetic circuit connecting portion is stacked on the magnetic circuit, and the lower end portion of the limiter is connected to the magnetic circuit connecting portion.

[0013] In some embodiments, a connection hole is provided on the magnetic circuit connection portion, and the magnetic circuit has a connection protrusion extending upward, and the connection protrusion is inserted into the connection hole.

[0014] In some embodiments, the stopper is located on the inner side of the connecting protrusion.

[0015] In some embodiments, the magnetic circuit includes a front plate, the magnetic circuit connection portion is stacked on the front plate, the connection protrusion is formed on the front plate, and the thickness of the front plate at the connection protrusion is equal to the thickness of other parts of the front plate.

[0016] In some embodiments, the stopper is disposed below the positioning support and close to an inner edge of the positioning support.

[0017] In some embodiments, the material of the stopper is a foam material. In some specific embodiments, the foam material is selected from one or more combinations of electron radiation cross-linked polyethylene foam (IXPE), polyethylene (PE), polyvinyl chloride (PVC), polyurethane (PU), and chemically cross-linked polyethylene foam (XPE).

[0018] In some embodiments, the material of the basin frame is metal or plastic. In some specific embodiments, the material of the basin frame is metal.

[0019] In some embodiments, the spacing is smaller than a normal working displacement of the positioning support.

[0020] In some embodiments, the vehicle-mounted outdoor speaker further includes a box and a mesh cover, the basin frame is fixed to the box by fasteners, and the mesh cover covers the outside of the sound basin.

[0021] In some embodiments, the stopper comprises a continuous stop ring, which surrounds the voice coil and is located at a distance outside the voice coil.

[0022] In some embodiments, the limiter includes a plurality of limit blocks arranged at intervals.

[0023] In some specific embodiments, a plurality of the limiting blocks are spaced apart around the voice coil and are located at a distance outside the voice coil.

[0024] The present disclosure has the following advantages:

[0025] A limiter is provided between the positioning support and the magnetic circuit. The material of the limiter adopts foam material to buffer excessive deformation when the vibration system of the loudspeaker is subjected to external force. Thus, in the overload working state, the limiter is squeezed between the positioning support and the magnetic circuit or the magnetic circuit connection part, and can prevent the vibration system of the loudspeaker from irreversible damage due to excessive deformation by supporting the positioning support. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] FIG1 is a top view of a vehicle-mounted outdoor speaker according to the present disclosure;

[0028] FIG2 is a cross-sectional view taken along line AA in FIG1 ;

[0029] FIG3 is a cross-sectional view taken along line BB in FIG1 ;

[0030] FIG4 is a top view of the internal components of the vehicle-mounted outdoor speaker according to the present disclosure, wherein the cabinet and the grille are not shown;

[0031] FIG5 is a cross-sectional view taken along line AA in FIG4 ;

[0032] FIG6 is a cross-sectional view taken along line BB in FIG4 .

[0033] in:

[0034] 1 - Basin frame; 11 - Magnetic circuit connection; 2 - Positioning support; 3 - Magnetic circuit; 31 - Front plate; 310 - Connecting protrusion; 32 - Magnet; 33 - T iron; 4 - Limiter; 5 - Voice coil; 6 - Paper cone; 7 - Box; 8 - Grille; 9 - Fastener. DETAILED DESCRIPTION

[0035] The preferred embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings to make the advantages and features of the present disclosure more easily understood by those skilled in the art. It should be noted that the descriptions of these embodiments are intended to facilitate understanding of the present disclosure and do not constitute a limitation of the present disclosure. In addition, the technical features involved in the various embodiments of the present disclosure described below may be combined with each other as long as they do not conflict with each other.

[0036] In this disclosure, the terms "inside" and "outside" are defined relative to the centerline of the voice coil, with the direction closer to the voice coil centerline considered inside and the direction farther away from the centerline considered outside. The directional terms "upper," "lower," and "horizontal" are intended to facilitate understanding of loudspeaker structure by those skilled in the art and are not intended to limit the state of the loudspeaker after installation in a vehicle, such as a car. For example, a loudspeaker can be mounted on a horizontal upper surface, an inclined component, or a vertical or lower surface of a vehicle.

[0037] This embodiment provides a vehicle-mounted outdoor speaker. Referring to Figures 1 to 6 , the vehicle-mounted outdoor speaker includes a frame 1, a positioning support 2, a magnetic circuit 3, and a stopper 4. The frame 1 is made of metal, which offers excellent strength and waterproof properties. The stopper 4 is made of a foam material; specifically, the foam material may be electron-irradiated cross-linked polyethylene foam (IXPE), polyethylene (PE), polyvinyl chloride (PVC), polyurethane (PU), or chemically cross-linked polyethylene foam (XPE).

[0038] As shown in Figures 1 to 3, the vehicle-mounted outdoor speaker also includes a housing 7 and a grille 8. The speaker's core components (i.e., the sound-generating mechanism) are housed within the housing 7. The grille 8, attached to the housing 7, protects these core components while allowing sound to radiate outward. The aforementioned frame 1, positioning support 2, magnetic circuit 3, stopper 4, and the voice coil 5 and paper cone 6 shown in the figures constitute the sound-generating mechanism within the housing 7. The frame 1 is secured to the housing 7 via fasteners 9, and the grille 8 covers the outside of the paper cone 6.

[0039] It should be noted that, unlike conventional car speakers, the in-vehicle outdoor speakers of this embodiment are mounted on the exterior of the vehicle, rather than within the passenger compartment. They are used to radiate sound outside the vehicle, typically providing pedestrian warning sounds. In one embodiment, the in-vehicle outdoor speakers can be used to play audio files such as music or to greet guests. In another embodiment, the in-vehicle outdoor speakers function similarly to pedestrian warning devices, emitting warning sounds to pedestrians or simulating sound waves while the vehicle is in motion. However, compared to conventional pedestrian warning devices, the in-vehicle outdoor speakers of this embodiment are larger and have greater speaker displacement.

[0040] As shown in Figures 5 and 6 , the frame 1 has a magnetic circuit connection portion 11 with a connection hole. The magnetic circuit connection portion 11 bends and extends horizontally inward and is stacked on the magnetic circuit 3, which is fixed to the magnetic circuit connection portion 11. The magnetic circuit 3 includes a front plate 31, a magnet 32, and a T-iron 33. Specifically, the magnetic circuit connection portion 11 is stacked on the front plate 31, and the magnetic circuit 3 has an upwardly extending connection protrusion 310, which is inserted into the connection hole. Furthermore, as shown in Figures 5 and 6 , the frame 1 is provided with a paper cone 6, which is connected to the voice coil 5. The front plate 31 and the magnet 32 ​​are arranged around the T-iron 33, forming a magnetic gap between the outer walls of the T-iron 33 for the voice coil 5 to be inserted into. The lower portion of the voice coil 5 is located in the magnetic gap. The front panel 31 is formed with a connecting protrusion 310 , and the thickness of the front panel 31 at the connecting protrusion 310 is equal to the thickness of other parts of the front panel 3 .

[0041] 2 and 3 , the inner end of the positioning support 2 is fixedly connected to the voice coil 5, and the outer edge of the positioning support 2 is fixedly connected to the basin frame 1. The arrangement of the positioning support 2 allows the voice coil 5 to move up and down stably and prevents it from shaking left and right.

[0042] As shown in Figures 2 and 3 , the stopper 4 is made of a foam material and is located inside the connecting protrusion 310. The stopper 4 is positioned below the positioning support 2 and near its inner edge. It has an upper end facing the positioning support 2 and a lower end facing the magnetic circuit 3 or the magnetic circuit connection portion 11. In this embodiment, the lower end of the stopper 4 is connected to the magnetic circuit connection portion 11, with a gap between the upper end and the positioning support 2. In other embodiments, the upper end of the stopper 4 is connected to the positioning support 2, with a gap between the lower end and the magnetic circuit 3 or the magnetic circuit connection portion. When the speaker is subjected to external forces, such as water pressure (e.g., water accumulation caused by rain), the speaker's vibration system may be squeezed beyond its normal operating displacement, causing the stopper 4 to contract and deform, acting as a limiter.

[0043] In this embodiment, the stopper 4 may be a continuous stopper ring that surrounds the voice coil 5 and is located at a distance outside the voice coil 5. In other embodiments, the stopper 4 includes a plurality of stopper blocks that are spaced apart and arranged around the voice coil 5 and are located at a distance outside the voice coil 5.

[0044] The outer edge of the basin frame 1 is fixedly connected to the box body 7, such as by fastening. Further, a layer of padding is provided between the outer edge of the basin frame 1 and the box body 7.

[0045] The vehicle-mounted outdoor speaker has a normal working state and an overload working state. In the normal working state, there is a distance between the limiter 4 and the positioning support 2, or there is a distance between the limiter 4 and the magnetic circuit 3 or the magnetic circuit connection part 13, and the distance is greater than the normal working displacement of the positioning support 2; that is, in the normal working state, the limiter 4 and the positioning support 2 are not in contact. When the speaker is subjected to external forces, such as water pressure, the speaker vibration system will be squeezed beyond the normal working displacement. At this time, the limiter begins to play a limiting role and switches to an overload working state. In the overload working state, the limiter 4 is squeezed between the positioning support 2 and the magnetic circuit 3 or the magnetic circuit connection part 13, preventing the speaker vibration system from excessive deformation and irreversible damage.

[0046] It should also be noted that: the basin frame 1 is provided with a plurality of air flow windows connecting the internal cavity of the speaker with the outside world; the voice coil 5 is provided with a plurality of through holes for connecting the inside and outside of the voice coil. The plurality of through holes are preferably provided on the skeleton of the voice coil 5 and are evenly arranged along the circumferential direction.

[0047] During the sound-generating process of the above-mentioned vehicle-mounted outdoor speaker: the lower part of the voice coil 5 is inserted into the magnetic gap, and an audio electrical signal is introduced. Under the action of the magnetic field, the voice coil 5 cuts the magnetic flux lines as the current changes, thereby driving the paper cone 6 to vibrate and produce sound; when subjected to external extrusion or impact, especially in the immersion test, it must meet the requirement of being immersed in water for 1 meter for half an hour; if accumulated water or rainwater splashes onto the paper cone 6, it may cause the paper cone 6 to collapse downward. At this time, the limiter 4 can be used to "drag" the vibration system. The limiter 4 can cushion the paper cone 6 to prevent excessive deformation of the paper cone and damage to the paper cone 6, voice coil 5 or positioning support 2.

[0048] The above-mentioned vehicle-mounted outdoor speaker has at least the following advantages:

[0049] Limiter 4 is made of a foam material to cushion the speaker's vibration system from excessive deformation when subjected to external forces. During overload operation, limiter 4 is squeezed between support plate 2 and magnetic circuit 3 or magnetic circuit connection 11. This supports support plate 2, preventing irreversible damage to the speaker's vibration system caused by excessive deformation.

[0050] Features of embodiments of the present disclosure are set forth in the following clauses:

[0051] 1. A vehicle-mounted outdoor speaker configured to be mounted outside a vehicle, the vehicle-mounted outdoor speaker comprising:

[0052] a basin frame having a magnetic circuit connection portion;

[0053] Positioning support piece;

[0054] a magnetic circuit disposed on the magnetic circuit connecting portion; and

[0055] a stopper made of a buffer material to allow contraction and deformation when subjected to an external force, the stopper having an upper end facing the positioning support and a lower end facing the magnetic circuit or the magnetic circuit connecting portion;

[0056] In which, the vehicle-mounted outdoor speaker has a normal working state and an overload working state. When the vehicle-mounted outdoor speaker is in the normal working state, the limiter and the positioning support plate have a distance, or the limiter and the magnetic circuit or the magnetic circuit connection part have a distance; when the vehicle-mounted outdoor speaker is in the overload working state, the limiter is squeezed between the positioning support plate and the magnetic circuit or the positioning support plate and the magnetic circuit connection part.

[0057] 2. The vehicle-mounted outdoor speaker according to clause 1, wherein the lower end of the limiter is connected to the magnetic circuit or the magnetic circuit connecting portion, and the upper end of the limiter is spaced apart from the positioning support.

[0058] 3. The in-vehicle outdoor speaker according to clause 2, wherein the magnetic circuit connection portion is stacked on the magnetic circuit, and the lower end portion of the stopper is connected to the magnetic circuit connection portion.

[0059] 4. The vehicle-mounted outdoor speaker according to clause 3, wherein a connection hole is provided on the magnetic circuit connection portion, and the magnetic circuit has a connection protrusion extending upward, and the connection protrusion is inserted into the connection hole.

[0060] 5. The vehicle-mounted outdoor speaker according to clause 4, wherein the stopper is located on the inner side of the connecting protrusion.

[0061] 6. The vehicle-mounted outdoor speaker according to clause 3, 4 or 5, wherein the magnetic circuit includes a front plate, the magnetic circuit connecting portion is stacked on the front plate, the connecting protrusion is formed on the front plate, and the thickness of the front plate at the connecting protrusion is equal to the thickness of other parts of the front plate.

[0062] 7. The vehicle-mounted outdoor speaker according to clause 1, wherein the limiter is arranged below the positioning support and close to the inner edge of the positioning support.

[0063] 8. The vehicle-mounted outdoor speaker according to clause 1, wherein the buffer material is a foam material.

[0064] 9. The vehicle-mounted outdoor speaker according to clause 8, wherein the foaming material is selected from one or more combinations of electron radiation cross-linked polyethylene foaming materials, polyethylene materials, polyvinyl chloride materials, polyurethane materials and chemically cross-linked polyethylene foaming materials.

[0065] 10. The vehicle-mounted outdoor speaker according to any of the preceding clauses, wherein the basin frame is made of metal or plastic.

[0066] 11. The vehicle-mounted outdoor speaker according to any preceding clause, wherein the spacing is smaller than a normal working displacement of the positioning support.

[0067] 12. The vehicle-mounted outdoor speaker according to any of the preceding clauses, wherein the vehicle-mounted outdoor speaker further comprises a box and a mesh cover, the basin frame is fixed to the box by fasteners, and the mesh cover covers the outside of the sound basin.

[0068] 13. The vehicle-mounted outdoor speaker according to any preceding clause, wherein the stopper comprises a continuous stop ring, the stop ring surrounding the voice coil and located at a distance outside the voice coil.

[0069] 14. The vehicle-mounted outdoor speaker according to any preceding clause, wherein the limiter comprises a plurality of limit blocks arranged at intervals.

[0070] 15. The vehicle-mounted outdoor speaker according to clause 14, wherein a plurality of the limiting blocks are spaced around the voice coil and are located at a distance outside the voice coil.

[0071] As shown in this specification and claims, the terms "comprise" and "include" only indicate the inclusion of the steps and elements that have been explicitly identified, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements.

[0072] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a", "the" and "the" used herein may also include plural forms. It is further understood that "a plurality" in this disclosure refers to two or more, and other quantifiers are similar thereto.

[0073] It will be further understood that the terms "first," "second," and the like are used to describe various types of information, but such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another and do not indicate a particular order or level of importance. In fact, the terms "first," "second," and the like are fully interchangeable. For example, first information could be referred to as second information, and similarly, second information could be referred to as first information without departing from the scope of this disclosure.

[0074] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being 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 the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0075] The above embodiment is only for illustrating the technical concept and features of the present disclosure and is a preferred embodiment. Its purpose is to enable people familiar with this technology to understand the content of the present disclosure and implement it accordingly, and it cannot be used to limit the scope of protection of the present disclosure.

Claims

1. A vehicle-mounted outdoor speaker, configured to be installed outside a vehicle, the vehicle-mounted outdoor speaker comprising: A basin frame having a magnetic circuit connection portion; Positioning support piece; A magnetic circuit, which is arranged on the magnetic circuit connecting portion; and A stopper made of a buffer material to allow contraction and deformation when subjected to an external force, the stopper having an upper end facing the positioning support and a lower end facing the magnetic circuit or the magnetic circuit connecting portion; The vehicle-mounted outdoor speaker has a normal working state and an overload working state. When the vehicle-mounted outdoor speaker is in the normal working state, there is a distance between the limiter and the positioning support sheet, or there is a distance between the limiter and the magnetic circuit or the magnetic circuit connecting portion; When the vehicle-mounted outdoor speaker is in the overload working state, the limiter is squeezed between the positioning support plate and the magnetic circuit or between the positioning support plate and the magnetic circuit connecting portion.

2. The vehicle-mounted outdoor speaker according to claim 1, characterized in that: The lower end of the limiter is connected to the magnetic circuit or the magnetic circuit connecting portion, and the upper end of the limiter is spaced apart from the positioning support piece.

3. The vehicle-mounted outdoor speaker according to claim 2, characterized in that: The magnetic circuit connection portion is stacked on the magnetic circuit, and the lower end portion of the stopper is connected to the magnetic circuit connection portion.

4. The vehicle-mounted outdoor speaker according to claim 3, characterized in that: A connection hole is formed on the magnetic circuit connection portion, and the magnetic circuit has a connection protrusion extending upward, and the connection protrusion is inserted into the connection hole.

5. The vehicle-mounted outdoor speaker according to claim 4, characterized in that: The stopper is located at the inner side of the connecting protrusion.

6. The vehicle-mounted outdoor speaker according to any one of claims 3 to 5, characterized in that: The magnetic circuit includes a front plate, the magnetic circuit connecting portion is stacked on the front plate, the connecting protrusion is formed on the front plate, and the thickness of the front plate at the connecting protrusion is equal to the thickness of other parts of the front plate.

7. The vehicle-mounted outdoor speaker according to any one of claims 1 to 6, characterized in that: The stopper is arranged below the positioning support piece and close to the inner edge of the positioning support piece.

8. The vehicle-mounted outdoor speaker according to any one of claims 1 to 6, characterized in that: The buffer material is a foam material.

9. The vehicle-mounted outdoor speaker according to claim 8, characterized in that: The foaming material is selected from one or more combinations of electron radiation cross-linked polyethylene foaming materials, polyethylene materials, polyvinyl chloride materials, polyurethane materials and chemical cross-linked polyethylene foaming materials.

10. A vehicle-mounted outdoor speaker according to any preceding claim, characterized in that: The material of the basin frame is metal or plastic.

11. A vehicle-mounted outdoor speaker according to any preceding claim, characterized in that: The spacing is smaller than a normal working displacement of the positioning support piece.

12. A vehicle mounted outdoor speaker according to any preceding claim, characterized in that The vehicle-mounted outdoor speaker also includes a box body and a mesh cover. The basin frame is fixed to the box body by fasteners, and the mesh cover covers the outer side of the sound basin.

13. A vehicle mounted outdoor speaker according to any preceding claim, characterized in that: The limiter comprises a continuous limit ring, which surrounds the voice coil and is located at a distance outside the voice coil.

14. A vehicle-mounted outdoor speaker according to any preceding claim, characterized in that The limiter comprises a plurality of limit blocks which are arranged at intervals.

15. The vehicle-mounted outdoor speaker according to claim 14, characterized in that: A plurality of the limiting blocks are arranged at intervals around the voice coil and are located at a distance outside the voice coil.

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