Speakers and vehicles

Abstract

The present invention provides a loudspeaker and a vehicle, relating to the technical field of vehicle-mounted loudspeakers. The loudspeaker provided by the present invention comprises an excitation assembly and a vehicle-mounted glass. The excitation assembly abuts the vehicle-mounted glass and is used to drive the vehicle-mounted glass to vibrate and produce sound. The loudspeaker provided by the present invention utilizes the vehicle-mounted glass as a diaphragm, increasing the diaphragm area. This eliminates the need for a separate diaphragm for the windshield speaker, utilizes the interior space of the vehicle as a vibration cavity, and reduces the space required for speaker placement.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle-mounted loudspeakers, and in particular to a loudspeaker and a vehicle. Background Art

[0002] Traditional speaker systems typically use cone-shaped dynamic speakers. Dynamic speakers primarily consist of a vibrating element, including the diaphragm, voice coil, and diaphragm bracket, along with a magnetic circuit and auxiliary components. Dynamic subwoofers utilize a magnetic field generated by the audio signal passing through the voice coil wire, causing the voice coil to move. This in turn pushes the diaphragm in a piston-like motion, producing sound. To achieve a good acoustic cavity, the diaphragm area must be maximized, which results in a larger speaker footprint. Summary of the Invention

[0003] The object of the present invention is to provide a loudspeaker and a vehicle, which utilize vehicle-mounted glass as a diaphragm, thereby increasing the diaphragm area and optimizing the layout space.

[0004] In a first aspect, the present invention provides a loudspeaker comprising: an excitation component and a vehicle-mounted glass, wherein the excitation component abuts against the vehicle-mounted glass, and the excitation component is used to drive the vehicle-mounted glass to vibrate and generate sound.

[0005] In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the excitation component includes a piezoelectric ceramic exciter;

[0006] The piezoelectric ceramic exciter includes: a piezoelectric ceramic crystal, a first fishbone-shaped amplifier component and a second fishbone-shaped amplifier component;

[0007] The piezoelectric ceramic crystal is installed between the first fishbone-shaped amplifying device and the second fishbone-shaped amplifying device. The first fishbone-shaped amplifying device and the second fishbone-shaped amplifying device are both used to drive the vehicle glass to vibrate when pushed or pulled by the piezoelectric ceramic crystal.

[0008] In combination with the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the first fishbone-shaped amplifying device and the second fishbone-shaped amplifying device both include: a main rod portion, a first side rod portion, and a second side rod portion;

[0009] One end of the main rod is connected to the piezoelectric ceramic crystal, and the other end of the main rod extends in a direction away from the piezoelectric ceramic crystal;

[0010] The first side rod is connected to a side of the main rod that is close to the vehicle glass, and the second side rod is connected to a side of the main rod that is away from the vehicle glass;

[0011] From an end connected to the piezoelectric ceramic crystal to an end away from the piezoelectric ceramic crystal, the first side rod portion and the second side rod portion are respectively inclined in a direction away from the main rod portion.

[0012] In combination with the second possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the piezoelectric ceramic exciter further includes: a first cover and a second cover;

[0013] The piezoelectric ceramic crystal, the first fishbone-shaped amplifying element, and the second fishbone-shaped amplifying element are all mounted between the first cover and the second cover, the end of the first side rod facing away from the main rod is connected to the first cover, and the end of the second side rod facing away from the main rod is connected to the second cover;

[0014] The first cover body abuts against the vehicle-mounted glass, and the second cover body abuts against the support beam.

[0015] In combination with the first possible implementation of the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein the excitation assembly further includes a rubber strip, which is installed between the piezoelectric ceramic exciter and the vehicle glass.

[0016] In combination with the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein the excitation assembly is installed on a support reinforcement, and the support reinforcement is attached to the surface of the support beam.

[0017] In combination with the fifth possible implementation manner of the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein the support reinforcement is bent to form a first extension portion and a second extension portion, and a cavity is defined between the first extension portion and the second extension portion;

[0018] The first extension portion is connected to the excitation assembly, and the second extension portion is in contact with the support beam.

[0019] In combination with the sixth possible implementation manner of the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the excitation assembly is connected to the first extension portion via a fastener;

[0020] The fastener passes through the first extension portion from the cavity and is connected to the vibration assembly.

[0021] In a second aspect, the present invention provides a vehicle equipped with any one of the speakers provided in the first aspect.

[0022] In combination with the second aspect, the present invention provides a first possible implementation of the second aspect, wherein an elastic device is provided between the vehicle-mounted glass and the vehicle body sheet metal.

[0023] The embodiments of the present invention bring the following beneficial effects: an excitation component is used to abut against the vehicle glass, and the vehicle glass is driven to vibrate and make sound through the excitation component. The vehicle glass is used to replace the conventional diaphragm to generate vibration, thereby forming a larger diaphragm area. There is no need to set a diaphragm inside the speaker, which reduces the space required for arranging the speaker.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 Schematic diagram of a speaker provided in an embodiment of the present invention Figure 1 ;

[0027] Figure 2 for Figure 1 A magnified schematic diagram of position A in the middle;

[0028] Figure 3 Schematic diagram of a speaker provided in an embodiment of the present invention Figure 2 ;

[0029] Figure 4 A schematic diagram of a piezoelectric ceramic exciter of a loudspeaker provided by an embodiment of the present invention.

[0030] Icons: 100 - excitation assembly; 110 - piezoelectric ceramic exciter; 111 - piezoelectric ceramic crystal; 112 - first fishbone-shaped amplifying element; 1121 - main rod; 1122 - first side rod; 1123 - second side rod; 113 - second fishbone-shaped amplifying element; 114 - first cover; 115 - second cover; 120 - rubber strip; 200 - vehicle-mounted glass; 300 - support reinforcement; 301 - cavity; 310 - first extension; 320 - second extension; 400 - support beam; 500 - fastener. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] Example 1

[0035] like Figure 1 、 Figure 2 and Figure 3 As shown, the loudspeaker provided by the embodiment of the present invention includes: an excitation component 100 and a vehicle glass 200 , wherein the excitation component 100 abuts against the vehicle glass 200 and is used to drive the vehicle glass 200 to vibrate and generate sound.

[0036] Specifically, an excitation assembly 100 is provided to drive the vehicle glass 200 to vibrate, and the vehicle glass 200 drives the surrounding air to vibrate, thereby generating sound. This eliminates the need for a conventional diaphragm, fully utilizing the vehicle glass 200, integrating the speaker with the vehicle glass 200, and reducing the space required for speaker placement. The vehicle glass 200 includes a windshield, a skylight, or a sunroof. Using the vehicle glass 200 as a diaphragm increases the diaphragm area, allowing a smaller diaphragm displacement to propel a larger area of air, resulting in a better sound field effect and saving speaker placement space.

[0037] like Figure 1 、 Figure 2 and Figure 4 As shown, in the embodiment of the present invention, the excitation assembly 100 includes a piezoelectric ceramic exciter 110;

[0038] The piezoelectric ceramic exciter 110 includes: a piezoelectric ceramic crystal 111, a first fishbone-shaped amplifying device 112 and a second fishbone-shaped amplifying device 113;

[0039] The piezoelectric ceramic crystal 111 is installed between the first fishbone amplifying device 112 and the second fishbone amplifying device 113 . The first fishbone amplifying device 112 and the second fishbone amplifying device 113 are both used to drive the vehicle glass 200 to vibrate when pushed or pulled by the piezoelectric ceramic crystal 111 .

[0040] Specifically, when the piezoelectric ceramic crystal 111 expands and contracts and pushes and pulls the first fishbone-shaped amplifying device 112 and the second fishbone-shaped amplifying device 113, the first fishbone-shaped amplifying device 112 and the second fishbone-shaped amplifying device 113 can produce a dimensional change perpendicular to the expansion and contraction direction of the piezoelectric ceramic crystal 111, thereby changing the vibration direction. The first fishbone-shaped amplifying device 112 and the second fishbone-shaped amplifying device 113 jointly drive the vehicle glass 200 to vibrate, thereby increasing the force-bearing area of the vehicle glass 200. The expansion and contraction amplitude of the piezoelectric ceramic crystal 111 can be amplified and transmitted to the vehicle glass 200 through the first fishbone-shaped amplifying device 112 and the second fishbone-shaped amplifying device 113, thereby increasing the vibration amplitude of the vehicle glass 200.

[0041] Furthermore, the first fishbone-shaped amplifying device 112 and the second fishbone-shaped amplifying device 113 both include: a main rod portion 1121 , a first side rod portion 1122 and a second side rod portion 1123 ;

[0042] One end of the main rod 1121 is connected to the piezoelectric ceramic crystal 111 , and the other end of the main rod 1121 extends away from the piezoelectric ceramic crystal 111 ;

[0043] The first side rod portion 1122 is connected to a side of the main rod portion 1121 close to the vehicle glass 200 , and the second side rod portion 1123 is connected to a side of the main rod portion 1121 away from the vehicle glass 200 ;

[0044] From an end connected to the piezoelectric ceramic crystal 111 to an end away from the piezoelectric ceramic crystal 111 , the first side rod portion 1122 and the second side rod portion 1123 are respectively inclined in a direction away from the main rod portion 1121 .

[0045] Specifically, when the piezoelectric ceramic crystal 111 pushes the main rod 1121 to move away from the piezoelectric ceramic crystal 111, the angle between the first side rod 1122 and the second side rod 1123 increases, thereby increasing the thickness of the first fishbone-shaped amplifying device 112 and the second fishbone-shaped amplifying device 113. By driving the angle between the first and second side rods 1122 and 1123 through the main rod 1121, not only can the vibration direction be changed, but the vibration amplitude of the piezoelectric ceramic crystal 111 can also be amplified by the change in the angle between the first and second side rods 1122 and 1123. The amplified excitation force is then transmitted to the vehicle window 200 via the first side rod 1122, causing the vehicle window 200 to vibrate and produce sound.

[0046] Furthermore, the piezoelectric ceramic exciter 110 further includes: a first cover 114 and a second cover 115;

[0047] The piezoelectric ceramic crystal 111, the first fishbone-shaped amplifying device 112, and the second fishbone-shaped amplifying device 113 are all mounted between the first cover 114 and the second cover 115. The end of the first side rod 1122 facing away from the main rod 1121 is connected to the first cover 114, and the end of the second side rod 1123 facing away from the main rod 1121 is connected to the second cover 115.

[0048] The first cover 114 abuts against the vehicle glass 200 , and the second cover 115 abuts against the support beam 400 .

[0049] The first side rods 1122 of the first and second fishbone-shaped amplifying devices 112, 113 are respectively connected to the first cover 114, and the second side rods 1123 of the first and second fishbone-shaped amplifying devices 112, 113 are respectively connected to the second cover 115. When the piezoelectric ceramic crystal 111 pushes the main rod 1121, the first side rod 1122 swings under the combined action of the first cover 114 and the main rod 1121, increasing the angle between the first side rod 1122 and the main rod 1121. Furthermore, the second side rod 1123 swings under the combined action of the second cover 115 and the main rod 1121, increasing the angle between the second side rod 1123 and the main rod 1121. Consequently, the angle between the first side rod 1122 and the second side rod 1123 increases, and the distance between the first cover 114 and the second cover 115 increases. Conversely, when the piezoelectric ceramic crystal 111 pulls the main rod 1121, the angle between the second side rod 1123 and the main rod 1121 decreases, reducing the distance between the first cover 114 and the second cover 115. This change in distance between the first and second covers 114, 115 can alter the thickness of the piezoelectric ceramic exciter 110, thereby generating an excitation force. This excitation force can be transmitted to the vehicle window 200 through the contact of the first cover 114 with the vehicle window 200.

[0050] like Figure 1 and Figure 2 As shown, the excitation assembly 100 further includes a rubber strip 120 , which is installed between the piezoelectric ceramic exciter 110 and the vehicle glass 200 .

[0051] Specifically, the piezoelectric ceramic exciter 110 is adhered to the surface of the edge of the vehicle glass 200 through the adhesive strip 120 . The adhesive strip 120 is elastic and can transmit the excitation force of the piezoelectric ceramic exciter 110 to the vehicle glass 200 through the adhesive strip 120 .

[0052] Furthermore, the excitation assembly 100 is mounted on the support reinforcement 300 , and the support reinforcement 300 is attached to the surface of the support beam 400 .

[0053] The support beam 400 may comprise the upper plate of the lower cross member of the vehicle's front windshield. The support beam 400 provides support so that when the excitation force of the excitation assembly 100 is transmitted to the vehicle's glass 200, the glass 200 can vibrate relative to the vehicle body. The excitation assembly 100 may be mounted on a support reinforcement 300, which has an end surface that mates with the support beam 400. The support reinforcement 300 enhances the rigidity of the support beam 400, allowing the excitation force of the excitation assembly 100 to fully act on the vehicle's glass 200.

[0054] Furthermore, the support reinforcement 300 is bent to form a first extension portion 310 and a second extension portion 320 , and a cavity 301 is defined between the first extension portion 310 and the second extension portion 320 ;

[0055] The first extension portion 310 is connected to the excitation assembly 100 , and the second extension portion 320 is in contact with the support beam 400 .

[0056] Specifically, the first extension portion 310 and the second extension portion 320 have an angle, and the angle between the support beam 400 and the vehicle glass 200 can be adapted through the support reinforcement 300, so that the excitation assembly 100 is supported by the support beam 400 through the support reinforcement 300 and applies the excitation force to the vehicle glass 200.

[0057] Furthermore, the excitation assembly 100 is connected to the first extension portion 310 via a fastener 500;

[0058] The fastener 500 passes through the first extension portion 310 from the cavity 301 and is connected to the excitation assembly 100 .

[0059] Specifically, the fastener 500 includes a bolt, which passes through the first extension portion 310 from the cavity 301 and cooperates with the vibration assembly 100 . The vibration assembly 100 and the first extension portion 310 can be connected by the fastener 500 .

[0060] Example 2

[0061] like Figure 1 、 Figure 2 and Figure 3 As shown, the vehicle provided by the embodiment of the present invention is equipped with the speaker provided by the first embodiment.

[0062] The technical effect of the vehicle having a speaker provided by the embodiment of the present invention will not be described in detail here.

[0063] In the embodiment of the present invention, an elastic device is provided between the vehicle glass 200 and the vehicle body sheet metal.

[0064] The elastic device allows the glass 200 to be mounted in a quasi-suspended position on the vehicle's windshield frame, thereby reducing vibrations transmitted from the vehicle body to the glass 200 and preventing any unusual noise. During installation, the upper edge of the glass 200 is secured to the vehicle body's sheet metal via a positioning protrusion. The lower edge of the glass 200 is bonded to the piezoelectric ceramic exciter 110 via a rubber strip 120, allowing the excitation force of the piezoelectric ceramic exciter 110 to act on the surface of the glass 200. Springs are located on the left and right sides of the glass 200, positioned between the glass 200 and the vehicle body's sheet metal to prevent rigid contact between the two. The preload applied by the excitation assembly 100 to the glass 200 is adjusted by adjusting the fastener 500. At this point, the positioning protrusion on the upper edge of the glass 200 serves as a fulcrum, allowing for a slight oscillation. The excitation assembly 100 causes the glass 200 to vibrate. The vehicle's cabin replaces the conventional speaker cavity, and the vehicle-mounted glass 200 drives the air in the cabin to vibrate, which has a better heavy bass effect.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A loudspeaker, characterized in that: include: An excitation component (100) and a vehicle-mounted glass (200), wherein the excitation component (100) abuts against the vehicle-mounted glass (200), and the excitation component (100) is used to drive the vehicle-mounted glass (200) to vibrate and generate sound; The excitation component (100) is mounted on the support reinforcement (300), and the support reinforcement (300) is attached to the surface of the support beam (400); The excitation component (100) includes a piezoelectric ceramic exciter (110); The piezoelectric ceramic exciter (110) comprises: a piezoelectric ceramic crystal (111), a first fishbone-shaped amplifying device (112), and a second fishbone-shaped amplifying device (113); The piezoelectric ceramic crystal (111) is mounted between the first fishbone-shaped amplifying device (112) and the second fishbone-shaped amplifying device (113), and the first fishbone-shaped amplifying device (112) and the second fishbone-shaped amplifying device (113) are both used to drive the vehicle-mounted glass (200) to vibrate when pushed or pulled by the piezoelectric ceramic crystal (111); The first fishbone-shaped amplifying device (112) and the second fishbone-shaped amplifying device (113) both comprise a main rod portion (1121), a first side rod portion (1122), and a second side rod portion (1123); One end of the main rod portion (1121) is connected to the piezoelectric ceramic crystal (111), and the other end of the main rod portion (1121) extends in a direction away from the piezoelectric ceramic crystal (111); The first side rod portion (1122) is connected to a side of the main rod portion (1121) close to the vehicle glass (200), and the second side rod portion (1123) is connected to a side of the main rod portion (1121) facing away from the vehicle glass (200); From an end connected to the piezoelectric ceramic crystal (111) to an end away from the piezoelectric ceramic crystal (111), the first side rod portion (1122) and the second side rod portion (1123) are respectively inclined in a direction away from the main rod portion (1121).

2. The loudspeaker according to claim 1, wherein The piezoelectric ceramic exciter (110) further includes: a first cover (114) and a second cover (115); The piezoelectric ceramic crystal (111), the first fishbone-shaped amplifying element (112), and the second fishbone-shaped amplifying element (113) are all mounted between the first cover (114) and the second cover (115); the end of the first side rod (1122) facing away from the main rod (1121) is connected to the first cover (114); and the end of the second side rod (1123) facing away from the main rod (1121) is connected to the second cover (115); The first cover (114) abuts against the vehicle-mounted glass (200), and the second cover (115) abuts against the support beam (400).

3. The loudspeaker according to claim 1, wherein The excitation assembly (100) further comprises a rubber strip (120), wherein the rubber strip (120) is installed between the piezoelectric ceramic exciter (110) and the vehicle-mounted glass (200).

4. The loudspeaker according to claim 1, wherein The support reinforcement member (300) is bent to form a first extension portion (310) and a second extension portion (320), and a cavity (301) is provided between the first extension portion (310) and the second extension portion (320); The first extension portion (310) is connected to the excitation assembly (100), and the second extension portion (320) is fitted to the support beam (400).

5. The loudspeaker according to claim 4, characterized in that The excitation assembly (100) and the first extension portion (310) are connected via a fastener (500); The fastener (500) passes through the first extension portion (310) from the cavity (301) and is connected to the excitation assembly (100).

6. A vehicle, characterized in that: The vehicle is equipped with the speaker according to any one of claims 1 to 5.

7. The vehicle according to claim 6, characterized in that An elastic device is provided between the vehicle-mounted glass (200) and the vehicle body sheet metal.

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