WO2017161473A1

WO2017161473A1 - Light-weight vehicle-mounted vibration speaker based on 3d-sound effect

Info

Publication number: WO2017161473A1
Application number: PCT/CN2016/076817
Authority: WO
Inventors: 王平; 李红元; 吴逸飞
Original assignee: 汉得利（常州）电子股份有限公司
Priority date: 2016-03-19
Filing date: 2016-03-19
Publication date: 2017-09-28

Abstract

A light-weight vehicle-mounted vibration speaker based on a 3D-sound effect comprises a support device, an elastic connection member (3), a radiation plate (4), a damping cover (5) and a vibration source (6) that are mounted on an automobile. The support device and the radiation plate (4) are connected by means of the elastic connection member (3). The damping cover (5) and the support device are fixedly connected. The damping cover (5), the support device, the elastic connection member (3) and the radiation plate (4) form a vibration cavity in an encircling manner. The vibration source (6) is disposed in the vibration cavity. One end of the vibration source (6) is fixedly connected to the radiation plate (4), and the other end is fixedly connected to the damping cover (5). The damping cover (5) is made of an aramid fiber knitting material. By means of the solution, the size, cost, and weight of the product are effectively reduced, the vibration source (6) is prevented from being out of balance during the driving process of the vehicle, distortion of the speaker is effectively reduced, the sound quality of the vibration source is improved; and the vibration source F0 is reduced by means of the elastic connection member (3), and the low-frequency effect is improved.

Description

Lightweight car vibration speaker based on 3D sound

Technical field

The invention relates to a loudspeaker, in particular to a lightweight on-board vibration loudspeaker based on 3D sound.

Background technique

At present, the sound system of the conventional car on the market is matched with the traditional tweeter and the door woofer. However, the disadvantage of the door speaker is that it is bulky, high in cost, and takes up a large space. It is easy to be unbalanced during the running of the vehicle, causing distortion of the speaker. , affecting the quality of the speaker sound.

Summary of the invention

It is an object of the present invention to provide a lightweight 3D sound-based vehicle vibration speaker that is small in size, low in cost, effective in reducing distortion of a speaker, and improving the effective bandwidth of speaker sound quality.

The technical solution for achieving the object of the present invention is as follows:

A lightweight on-board vibration speaker based on 3D sound effects, comprising a supporting device mounted on a vehicle, an elastic connecting member, a radiant panel, a damper cover and a vibration source, wherein the supporting device and the radiant panel are connected by an elastic connecting member, the damper cover and The support device is fixedly connected, and the damper cover, the support device, the elastic connecting member and the radiation plate are enclosed to form a vibration cavity, and the vibration source is disposed in the vibration cavity, and one end of the vibration source is fixedly connected with the radiation plate, and the other end is The damper cover is fixedly connected, and the damper cover is made of an aramid fiber woven material.

After adopting the above structure, the invention forms a woofer unit through a radiant panel with an elastic connecting member and a vibration source, and the radiant panel diverges the sound transmission of the vibration source, thereby effectively increasing the area of the vibration source to improve the sound pressure of the speaker, and effectively reducing The volume, cost and weight of the product are fixed by the support device and the damper cover made of aramid fiber woven material to prevent the vibration source from being unbalanced during the running of the vehicle, effectively reducing the distortion of the speaker and improving the sound quality of the vibration source. , reduced by elastic connectors The woofer F0 enhances the low frequency effect.

Preferably, the damper cover is made of Conex material in order to ensure that the damper cover forms sufficient support for the vibration source.

Preferably, in order to enhance the strength of the radiant panel, the vibration source loudness of the radiant panel and the effective bandwidth of the vibration source are increased, and the radiant panel adopts a honeycomb panel of 1.5 mm to 2.5 mm.

Preferably, the radiant panel has a thickness of 2 mm, and the bandwidth can be broadened from the original 250HZ-13000HZ to 120HZ-20000HZ.

Preferably, in order to optimize the lowering of the vibration source F0, the elastic connecting member has a ring shape, and the elastic connecting member includes an integrally formed outer ring, an excessive portion and an inner ring in order from the outside to the inner, the excessive section The semicircular shape is fixedly connected to the radiation plate, and the outer ring is fixedly connected with the supporting device.

Preferably, in order to enhance the stability of the vibration source, the supporting device comprises a support frame having a circular cross section and an annular step disposed on the inner wall of the support frame, the annular steps being fixedly connected to the outer ring and the damper cover, respectively.

Preferably, in order to ensure the strength of the damper cover, the damper cover includes a connecting portion, a reinforcing portion and a supporting portion, the connecting portion is fixedly connected with the fixing frame, and the supporting portion is fixedly connected with the vibration source, and the outer portion of the reinforcing portion and the connecting portion are Connected, the inner side is connected to the support portion, and the reinforcing portion has a wave-shaped cross section.

Preferably, the reinforcing portion has a flare shape in order to ensure that the damper cover forms sufficient support for the vibration source.

Preferably, the reinforcing portion is annular in order to ensure that the damper cover forms sufficient support for the vibration source.

Preferably, in order to ensure the sound quality of the vibration source, the vibration source includes a magnetic cover, the magnetic cover has an upwardly open cavity, a magnet is fixed in the cavity, and a pole piece is fixed on the magnet, the pole a voice coil is sleeved on an outer circumference of the sheet; a magnetic fluid is filled in a gap between the voice coil and the pole piece, and a basin frame is arranged on the outer side of the magnetic cover, and a positioning piece is fixed on the basin frame, and the positioning piece is fixed on the positioning piece Fixed setting connection board, even The vibration damping pad is fixedly arranged on the connecting plate, and the vibration damping pad is fixedly connected with the radiation plate, so that the magnetic cover and the magnet are glued to form an external magnetic field, and the pole piece and the magnet are glued to form an internal magnetic field, and the voice coil is located inside. After the magnetic field is energized, the cutting magnetic field moves downward, and the positioning piece supports the voice coil. The magnetic liquid acts as a damping between the voice coil and the pole piece, and the voice coil vibrates up and down and transmits the vibration to the connecting plate, and the connection is made. The board transmits the vibration to the radiant panel through the cushion, and the vibration absorbing pad prevents the vibration source and the radiant panel from resonating, resulting in a problem of large sound distortion and poor sound.

DRAWINGS

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

FIG. 1 is a schematic structural view of a first embodiment of the present invention.

2 is a schematic structural view of a positioning piece according to Embodiment 1 of the present invention.

Fig. 3 is a cross-sectional view showing a positioning piece according to a first embodiment of the present invention.

4 is a schematic structural view of a second embodiment of the present invention.

Fig. 5 is a schematic structural view of a vibration source of the present invention.

In the figure: 1 is the car door panel, 2 is the support frame, 21 is the annular step, 3 is the elastic connecting piece, 31 is the outer ring, 32 is the over part, 33 is the inner ring, 4 is the radiant panel, 5 is the damper cover, 51 For the connection, 52 is the reinforcement, 53 is the support, 6 is the vibration source, 7 is the magnetic cover, 8 is the magnet, 9 is the pole piece, 10 is the voice coil, 11 is the magnetic fluid, 12 is the basin frame, 13 is Positioning the piece, 14 is the connecting plate, and 15 is the cushion.

detailed description

1 to 4, the lightweight vehicle vibration speaker based on the 3D sound effect of the present invention comprises a support frame 2, an elastic connecting member 3, a radiation plate 4, a damper cover 5, and a vibration source 6 mounted on the door panel 1, and the damper cover 5 Made of aramid fiber woven material, the support frame 2 has a circular cross section, and the inner wall of the support frame 2 is provided with an annular step 21, the damper cover 5 is fixedly connected with the annular step 21, and the radiant panel 4 is fixed with the elastic connecting member 3. The connection, the elastic connecting member 3 is fixedly connected with the annular step 21, the damping cover 5, the annular step 21, the elastic connecting member 3 and the radiation plate 4 are enclosed to form a vibration cavity, and the vibration source is disposed in the vibration cavity, and the vibration source has one end and the radiation plate. The connection is fixed and the other end is fixedly connected to the damper cover.

According to the above structure, the radiant panel with the elastic connecting member forms a woofer unit with the vibration source, and the radiant panel diverges the sound transmission of the vibration source, thereby effectively increasing the area of the vibration source to improve the sound pressure of the speaker, and effectively reducing the volume of the product. Cost, weight, damper cover made of support frame, annular step and aramid fiber woven material to fix the woofer, prevent the vibration source from unbalanced during the running of the vehicle, effectively reduce the distortion of the speaker and improve the sound quality of the vibration source. The vibration source F0 can be reduced by the elastic connecting member to enhance the low frequency effect.

In order to improve the loudness of the woofer and expand the effective bandwidth of the woofer, the radiant panel is made of 1.5mm-2.5mm honeycomb panel. As a preferred solution, the radiant panel 4 has a thickness of 2mm, and the bandwidth can be widened from the original 250HZ-13000HZ. To 120HZ-20000HZ.

In order to ensure that the elastic connecting member reduces the vibration source F0 and enhances the low frequency effect, it can be seen from FIG. 1 that the elastic connecting member 3 has a ring shape, and the elastic connecting member includes an integrally formed outer ring 31, an excessive portion 32 and an inner ring in order from the outside to the inside. 33. The excess portion 32 has a semicircular cross section, the inner ring 33 is fixedly connected to the radiation plate 4, and the outer ring 31 is fixedly connected to the annular step 21.

As a preferred solution, the elastic connecting member 3 is made of a rubber material.

As can be seen from FIG. 5, the vibration source 6 includes a magnetic cover 7 fixedly coupled to the damper cover 5, the magnetic cover 7 having an upwardly open cavity in which a magnet 8 is fixed; and a magnet is fixed above the magnet 8 a sheet 9 on the outer circumference of the pole piece 9 is covered with a voice coil 10; the gap between the voice coil 10 and the pole piece 9 is filled with a magnetic fluid 11, and the outer surface of the magnetic cover 7 is provided with a basin frame 12, the basin A positioning piece 13 is fixed on the frame 12, a connecting plate 14 is fixedly disposed on the positioning piece 13, and a damping pad 15 is fixedly disposed on the connecting plate 14, the vibration damping The pad 15 is fixedly connected to the radiant panel 4.

The vibration source structure is adopted, the magnetic cover and the magnet are glued to form an external magnetic field, and the pole piece and the magnet are glued to form an internal magnetic field, and the voice coil is placed in the internal magnetic field to perform the cutting magnetic field downward movement, and the positioning piece is opposite to the voice coil. Supporting, the magnetic fluid acts as a damping between the voice coil and the pole piece. The voice coil vibrates up and down and transmits the vibration to the connecting plate. The connecting plate transmits the vibration to the radiant panel through the cushion, and reduces The shock pad avoids the problem of large sound distortion and poor sound when the vibration source and the radiation plate resonate.

As can be seen from FIG. 1 and FIG. 4, the damper cover 5 is divided into a connecting portion 51, a reinforcing portion 52 and a supporting portion 53 from the outside to the inside. The connecting portion 51 is connected to the annular step 21, and the supporting portion 53 is connected to the vibration source, and the reinforcing portion 52 is connected. It is used for the transition between the connecting portion 51 and the supporting portion 53 and enhances the strength of the entire damper cover 5, and the reinforcing portion 51 has a wavy cross section.

Regarding the shape of the damper cover, there are two preferred embodiments:

Embodiment 1 As can be seen from Fig. 1, the reinforcing portion has a flared shape.

Embodiment 2: As can be seen from FIG. 4, the reinforcing portion has a ring shape.

The material for making the damper cover may be a Conex material or a Nomex material.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

A lightweight on-board vibration speaker based on 3D sound, comprising: a supporting device mounted on the automobile, an elastic connecting member, a radiant panel, a damper cover and a vibration source, wherein the supporting device and the radiant panel are connected by an elastic connecting member. The damper cover is fixedly connected to the supporting device, and the damper cover, the supporting device, the elastic connecting member and the radiation plate are enclosed to form a vibration cavity, the vibration source is disposed in the vibration cavity, and one end of the vibration source is fixedly connected with the radiation plate The other end is fixedly connected to the damper cover, and the damper cover is made of aramid fiber woven material.
The lightweight 3D sound-based vehicle vibration speaker according to claim 1, wherein the damper cover is made of a Conex material.
The 3D sound-based lightweight vehicle-mounted vibration speaker according to claim 1, wherein the radiation plate adopts a honeycomb plate of 1.5 mm to 2.5 mm.
The lightweight 3D sound-based vehicle vibration speaker according to claim 3, wherein the radiation plate has a thickness of 2 mm.
The 3D sound-based lightweight vehicle-mounted vibration speaker according to claim 3, wherein the elastic connecting member has a ring shape, and the elastic connecting member comprises an integrally formed outer ring, an excessive portion and an inner portion in order from the outside to the inside. The ring has a semicircular cross section, the inner ring is fixedly connected with the radiation plate, and the outer ring is fixedly connected with the supporting device.
The lightweight 3D sound-absorbing vehicle vibration speaker according to claim 5, wherein the supporting device comprises a support frame having a circular cross section and an annular step disposed on an inner wall of the support frame, the annular step and the outer ring respectively And a fixed connection of the damper cover.
The lightweight 3D sound-absorbing vehicle vibration speaker according to claim 1, wherein the damper cover comprises a connecting portion, a reinforcing portion and a supporting portion, wherein the connecting portion is fixedly connected with the fixing frame, the supporting portion and the vibration source The connecting portion is connected to the connecting portion, the inner portion is connected to the supporting portion, and the reinforcing portion has a wave-shaped cross section.
The lightweight 3D sound-based vehicle vibration speaker according to claim 7, wherein the reinforcing portion has a flared shape.
The lightweight 3D sound-based vehicle vibration speaker according to claim 7, wherein the reinforcing portion has a ring shape.
The 3D sound-based lightweight vehicle-mounted vibration speaker according to any one of claims 1 to 9, wherein the vibration source comprises a magnetic cover, the magnetic cover has an upwardly open cavity, and the cavity a magnet is fixed; a pole piece is fixed on the magnet, and a voice coil is sleeved on an outer circumference of the pole piece; a magnetic fluid is filled in a gap between the voice coil and the pole piece, and a basin frame is arranged on the outer side of the magnetic cover. A positioning piece is fixed on the basin frame, and a connecting plate is fixedly disposed on the positioning piece. The damping plate is fixedly disposed on the connecting plate, and the vibration damping pad is fixedly connected with the radiation plate.