WO2017161472A1

WO2017161472A1 - Novel vehicle-mounted vibration and radiation headrest surrounding sound system

Info

Publication number: WO2017161472A1
Application number: PCT/CN2016/076816
Authority: WO
Inventors: 王平; 李红元; 葛斌
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 novel vehicle-mounted vibration and radiation headrest surrounding sound system comprises a headrest body (1). At least one resonant box body (2) capable of making sounds is disposed in the headrest body (1). A filler (6) is filled between the resonant box body (2) and the headrest body (1). The resonant boxes are embedded in the headrest of an automobile, separately make sounds and have a good low-frequency sound effect.

Description

New vehicle vibration radiation headrest surround sound system

Technical field

The invention belongs to the technical field of automobile parts, and particularly relates to a novel vehicle vibration radiation headrest surround sound system.

Background technique

At present, the sound system of the conventional car on the market is matched with the traditional tweeter and the woofer, and the existing car audio system is generally installed in the position of the car door leaf, the center console, etc., thereby, the traditional car audio brings volume. Large, high cost, high space and other issues. In the actual use of a car, the car is often not just a person. Therefore, when a person wants to listen to music, the whole person hears it, thus affecting passengers who need to be quiet. In order to solve this technical problem, the current method is to hide the car audio system somewhere in the car, such as a car audio seat disclosed in the Chinese utility model patent (patent number 200920304855.8), and its disclosed technical solution The utility model comprises a backrest and a headrest which is arranged on the upper end of the backrest. The headrest is composed of an inner bracket and an outer cover. The ends of the two sides of the headrest are symmetrically arranged with two side flaps, and the side flaps are fixedly provided with a speaker. The side flaps can be swayed laterally or longitudinally, and the speakers are disposed in the two side flaps on both sides of the headrest. Although the occupation of the interior space is reduced to a certain extent, it is disposed on both sides of the headrest, firstly, the overall aesthetic of the seat is destroyed. Features, aesthetics are greatly reduced, second, the safety of driving is also greatly reduced, in the event of an impact, the speaker is easy to damage, and easy to hurt the passengers inside the car, third, the wing is only set the usual speaker, the sound is poor, although Can be used alone, but does not provide high quality hearing enjoyment.

Summary of the invention

The technical problem to be solved by the present invention is to provide a new type of vehicle vibration radiation headrest surround sound system, which is embedded in the headrest of the automobile, independently sounded, and has good low frequency sound effect.

The technical solution adopted by the present invention to solve the technical problems thereof is as follows:

The utility model relates to a new vehicle vibration radiation headrest surrounding sound system, comprising a headrest body, wherein the headrest body has at least one resonance box body capable of emitting sound, and the resonance box body and the headrest body are filled with a sound wave wave transmission. The filler and the resonance box are buried in the headrest, which is inevitably smaller in size and quality. Naturally, the car audio system is smaller in size, lowering the cost, and releasing the space inside the car. Control independent sound, so that the impact on other passengers in the car is minimized. The resonant speaker will inevitably emit resonance sound. Compared with the general speaker or pronunciation device, the sound effect is greatly improved, and the passenger's hearing enjoyment can be improved. Covering the outside of the resonance box, the headrest body is wrapped around the outside of the filler, the filling material is tightly fixed to the resonance box body, and the tightly wrapped body of the headrest body, the resonance box body can be well fixed, and the filler does not affect the resonance sound wave. Propagation, so the resonance sound is not affected by the filler, and the filler that does not affect the sound wave propagation generally has a certain cushioning property, so the filler It can play a certain buffering effect. Once an impact accident occurs, the filling material can absorb the impact energy and avoid the damage of the resonance box body. The headrest body also has certain toughness and strength. If the resonance box body is damaged, the broken resonance box is avoided. The body fragments penetrate the filling body and the headrest body to avoid the damage that the resonance box may cause to the occupant and improve safety.

Further, the periphery of the resonance box body inside the headrest body is further provided with a bracket for tightening the resonance box body, and the bracket acts as a hoop to the resonance box body, and can strengthen the stability of the resonance box body.

Further, the resonance box body is provided with an inner groove for the bracket, and the bracket is disposed in the inner groove, which reduces the spacing between the resonance box body and the bracket, so that the overall volume is small and the structure is more Compact, the resonance box is easy to set in the headrest body.

Further, the headrest body, the resonance box body and the bracket are not in contact with each other, and the three are separated by a filler, thereby avoiding the transmission of mechanical vibration between the three, avoiding the resonance sound effect of the resonance box and avoiding The sound is distorted.

Further, the bracket is an inverted U-shaped structure, the inner groove is located on the top and side of the resonance box, and the inverted U-shaped structure surrounds the resonance box on the inner side thereof, which is not only convenient for assembly, but also has For better tightening action, the lower end of the inverted U-shaped structure can extend out of the bottom of the headrest body, and the extended portion can be provided with a card slot to cooperate with the seat to adjust the height of the headrest.

Further, the bracket is a closed square or ring structure disposed at the periphery of the resonance box body, and the hooping effect is better, the stability of the resonance box body is ensured, and the safety of the headrest is improved.

Further, the resonant box body has a vertical radiant panel, and the inner wall of the radiant panel is provided with a resonance source. The resonance source is adjacent to the side of the radiant panel to have a double-sided adhesive of the substrate adhered to the radiant panel, and the resonance source is far away. One side of the radiation panel is provided with a fixed cover connected to the radiation panel. The opposite surface of the radiation panel is a sound-emitting board. The inner wall of the sound-emitting board is provided with a phase-guiding tube at a position opposite to the resonance source, and one end of the phase-guiding tube is inside. The opening and the other end of the guiding tube are provided with an outer opening on the outer wall surface of the sound emitting board.

The resonance source is fixed on the relatively flat radiation panel of the resonance box, and acts as a radiation source. The vibration of the resonance source causes the radiation panel to resonate, generating resonance sound waves, improving the sound effect, and the flat radiation panel can improve the resonance effect, and the resonance box can be used as a guide. The phase tube design makes the resonant speaker have a good low frequency effect. The phase guiding tube is opposite to the resonant source. After the resonant sound wave is transmitted to the phase guiding tube and guided by the phase guiding tube, the sound wave is emitted from the inner opening to the outer opening, and In-phase superposition with the resonance sound wave, the inner opening propagates to the outside of the outer wall of the outer wall of the board, so that the sound bandwidth has small distortion, greatly improves the low-frequency sound effect, and realizes a small resonance box to generate rich bass, resonance source and radiation. The double-sided adhesive between the panels serves to fix and reduce the mechanical vibration, eliminating the abnormal sound. The fixed casing fixes the vibration source on the radiation panel of the resonance box, thereby fixing the resonance source and limiting the resonance. The amplitude of the source eliminates the abnormal sound caused by the vibration imbalance and improves the sound.

Further, the number of the resonance boxes is two, and the two resonance boxes are disposed symmetrically about the center of the headrest body inside the headrest body, and the radiation panels of the two resonance boxes are opposite to each other, and the two radiation panels are not in contact with each other. The radiation panels of the two resonance boxes are opposite to each other, and the two radiation panels are not in contact with each other. The two resonance boxes are disposed on the left and right sides of the headrest, and the outer opening of the phase guiding tube faces the left and right sides of the headrest, which promotes better The spread of low-frequency sound effects makes passengers have better music enjoyment.

Further, the guiding tube is a convex structure in a vertical direction of the inner wall of the soundboard, and the inner opening is higher than In the outer opening, the position of the resonance source is higher than the outer opening than the inner opening, and the position of the resonance source can promote the phase guiding effect of the phase guiding tube.

Further, the resonant source is an exciter, and the exciter vibration causes the radiation panel to resonate to generate a resonant sound effect.

Further, the filler is foam, and has a good buffering effect, and the selection of the filler is various, and the vibration is good, the cushioning property is good, and the vibration can be isolated. The preferred foam is used in the present invention. cotton.

The beneficial effects obtained by the invention are: adopting the above scheme,

1. The sound is embedded in the headrest, which is small in size and light in weight, which greatly reduces the volume of the car audio system, reduces the cost, reduces the occupation of the interior space, releases the space inside the car, and conceals the setting, which is more beautiful. ;

2. Resonance source and radiation panel generate resonance sound wave, which obviously improves the sound effect. The phase guiding effect of the phase guiding tube greatly improves the low frequency sound effect, further improves the sound effect of the sound, provides better hearing enjoyment, and can independently pronounce and reduce Small impact on other passengers in the car;

3. The substrate double-sided tape and the fixed cover fixed the resonance source, reduce the mechanical vibration, limit the amplitude of the resonance source to eliminate the abnormal sound, and promote the sound effect;

4. The bracket tightens the resonance box and cooperates with the filled filler to improve the safety of the headrest.

DRAWINGS

The above and other objects, features and advantages of the present invention will become apparent from the accompanying drawings.

1 is a schematic cross-sectional view showing a first embodiment of the present invention.

FIG. 2 is a schematic structural view of the first embodiment of the present invention with the headrest body removed.

3 is a schematic structural view of a resonance box body according to Embodiment 1 of the present invention.

4 is a schematic structural view of a resonance box body after removing a radiation panel according to Embodiment 1 of the present invention.

Figure 5 is a schematic cross-sectional view showing the resonance source of the present invention.

Fig. 6 is an enlarged schematic view showing a portion I in Fig. 5.

FIG. 7 is a schematic view showing the cooperation structure of the bracket and the resonance box body according to Embodiment 2 of the present invention.

FIG. 8 is a schematic view showing the cooperation structure of the bracket and the resonance box body according to Embodiment 3 of the present invention.

FIG. 9 is a schematic view showing the cooperation structure of the bracket and the resonance box body according to Embodiment 4 of the present invention.

Among them: 1 is the headrest body, 2 is the resonance box body, 2.1 is the radiation panel, 2.2 is the phase guiding tube, 2.3 is the inner opening, 2.4 is the outer opening, 2.5 is the inner groove, 3 is the resonance source, 3.1 is the vibration plate 3.2 is a pole piece, 3.3 is a magnet, 3.4 is a magnetic cover, 3.5 is a voice coil, 3.6 is a positioning piece, 3.7 is a magnetic liquid, 4 is a double-sided tape with a substrate, 5 is a fixed cover, and 5.1 is a connecting claw. 6 is foam and 7 is a bracket.

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Embodiment 1: A new vehicle vibration radiation headrest surround sound system as shown in FIG. 1 and FIG. 2, comprising a headrest body 1, a headrest body 1 being a general automobile seat headrest, and two in the headrest body 1 a resonance box 2 capable of generating a resonance sound effect, two resonance boxes 2 are disposed on the left and right sides of the inside of the headrest body 1, and the two resonance boxes 2 are bilaterally symmetric with respect to the center of the headrest body 2, and the resonance case 2 is The headrest body 1 is filled with a foam 6 which is covered with a resonance box 2, and the headrest body 1 is wrapped with a foam 6 which makes the resonance box 2 and the headrest body 1 not in contact with each other. And the two resonance boxes 2 are not in contact with each other.

As shown in FIG. 3, the resonance box body 2 is vertically formed with a flat radiation panel 2.1, and a resonance source is disposed on the inner wall of the radiation panel 2.1. The resonance source is an exciter 3 having a diameter of 26 mm, and the exciter 3 is disposed at At the slightly lower position of the center of the radiant panel, the side of the exciter 3 adjacent to the radiant panel 2.1 is adhered to the radiant panel 2.1 with the double-sided tape 4 of the substrate, and the side of the exciter 3 away from the radiant panel 2.1 is provided with the radiant panel 2.1. The cover 5, the opposite of the radiant panel 2.1, the resonant box 2 constitutes a soundboard, and the soundboard The inner wall is opposite to the exciter 3 at a position where a phase guiding tube 2.2 is disposed, and the guiding tube 2.2 has a square convex structure in the vertical direction of the inner wall of the soundboard, and is integrally formed with the resonance box 2, and the guiding tube 2.2 and the resonance box 2 are installed. The tilting direction is the same, the top end of the guiding tube 2.2 is provided with an inner opening 2.3 located inside the resonant box 2, and the bottom end of the guiding tube 2.2 is provided with an outer opening 2.4 on the outer wall surface of the soundboard, and the inner opening 2.3 is higher than the outer opening. 2.4, the level of the exciter 3 is higher than the level of the outer opening 2.4, the inner volume of the resonance box 2 is proportional to the size of the guiding tube 2.2, and the material of the resonance box 2 is 1.5 mm - 2 mm thick The car-grade plastic, 1.5mm-2mm thick car-grade plastic made of resonant box 2 has good strength, which promotes the improvement of sound effect. The radiation panels 2.1 of the two resonance boxes 2.1 are oppositely arranged, and the two radiation panels are provided between 2.1. The spacing is such that the outer openings 2.4 of the two resonance boxes 2 face the left and right sides of the headrest, and the outer opening 2.4 makes the sound effect more stereoscopic in different directions, enhances the sound effect, enhances the hearing enjoyment, and the actuator 3 is fixed in the resonance box 2 to be relatively flat. Radiation panel 2.1, as a source of radiation, The vibration of the exciter 3 causes the radiation panel 2.1 to resonate, and a resonance sound wave is generated to improve the sound effect. The flat radiation panel 2.1 can improve the resonance effect, and the phase guiding tube 2.2 in the resonance box 2 makes the resonance speaker 2 have a good low frequency effect. The phase guiding tube 2.2 is opposite to the position of the exciter 3. After the resonant sound wave is transmitted to the guiding tube 2.2 and guided by the guiding tube 2.2, the sound wave is emitted from the inner opening 2.3 to the outer opening 2.4, and is superimposed in the same phase with the resonance sound wave. The opening 2.3 propagates to the outside of the outer opening 2.4 of the outer wall of the board, so that the sound bandwidth has less distortion, and the low-frequency sound effect is greatly improved, and the small resonance box 2 generates rich bass, and the actuator 3 and the radiation panel 2.1 are The double-sided tape 4 having the substrate functions to fix and reduce the mechanical vibration, and eliminates the abnormal sound. The fixed cover 5 fixes the actuator 3 to the inner wall surface of the radiation panel 2.1, thereby fixing the actuator 3 and confining it. The amplitude of the exciter 3 eliminates the abnormal sound caused by the vibration imbalance and greatly improves the sound effect.

The periphery of the two resonance boxes 2 inside the headrest body 1 is further provided with a bracket 7 for tightening the resonance box 2, and the bracket 7 acts as a tightening force for the two resonance boxes 2 to strengthen the resonance box 2 Stability, the bracket 7 is an inverted U-shaped structure, and the resonance box body 2 is provided with an inner groove 2.5 for the bracket 7, and in order to cooperate with the bracket 7, the inner groove 2.5 of the two resonance boxes 2 is opened at resonance On the sound-emitting panel of the casing 2 and the upper constituent surface, the inner grooves 2.5 of the two resonance tanks 2 just coincide with the brackets 7, due to the foam 7 Filling, so that the resonance box 2 and the bracket 7 are not in contact with each other to avoid mechanical vibration, the bracket 7 is disposed in the inner groove 2.5 of the resonance box 2, and acts to tighten the space while reducing the space occupation. The U-shaped structure is easy to assemble, and the difficulty of disposing the resonance box 2 in the headrest body 1 is reduced. The lower end of the inverted U-shaped structure bracket 7 can extend out from the bottom of the headrest body 1, and the extended portion can be provided with a card slot to Cooperate with the seat to support the headrest and adjust the height of the headrest.

The two resonance boxes 2 are symmetrically embedded in the headrest, and the volume and quality of the resonance box 2 are small, which reduces the volume of the car audio system, reduces the cost, and releases the space inside the car, and is disposed in the headrest. It is easy to control the independent sound, so that the impact on other passengers in the car is minimized. The resonant speaker 2 emits a resonant sound effect, and it has a good low-frequency sound effect, which can improve the passenger's hearing enjoyment, and the foam 6 is charged in the resonance box. 2, and the headrest body 1, the bracket 7, is isolated from each other, and the resonance box 2 is firmly fixed in the headrest, and the bracket 7 clamps the two resonance boxes 2 at the periphery to ensure the resonance box. The stability of the body 2, at the same time, the bracket 7 has a rigid support in the headrest body 1, which promotes the stability of the headrest, and the foam 6 hinders the mechanical vibration between the resonance box 2 and the headrest body 1 and the bracket 7. Propagation, avoiding the influence of the headrest body 1 and the bracket 7 on the resonance effect of the resonance box 2, and avoiding the distortion of the sound effect, the foam 6 has a good buffering effect, and in the event of an impact accident, the foam 6 can absorb a large amount of impact energy. Avoid damage to the resonance box 2, The pillow body 1 is generally made of a material such as leather, and has a certain toughness and strength. If the resonance box 2 is damaged, it is possible to prevent the broken resonance box 2 from penetrating the foam 6 and the headrest body 1 to avoid the resonance box. Body 2 may cause damage to the occupant, improve safety, embed in the headrest, concealed settings, does not damage the overall aesthetic characteristics of the seat, more beautiful, and satisfies the use in reality.

The exciter 3 shown in FIG. 5 and FIG. 6 is composed of a vibrating plate 3.1, a pole piece 3.1, a magnet 3.3, a magnetic cover 3.4, a voice coil 3.5, and a positioning support piece 3.6, and is placed in a horizontal normal state according to the exciter 3, and the vibrating plate 3.1 is located. The upper end, the magnetic cover 3.4 is located at the bottom end, the magnet 3.3 is disposed in the groove provided at the upper end of the magnetic cover 3.4, the pole piece 3.2 is disposed at the upper end of the magnet 3.3, the voice coil 3.5, the positioning support piece 3.6 is disposed at the periphery of the pole piece 3.2, the magnet 3.3 The bottom of the voice coil 3.5 extends below the upper end of the magnet 3.3, and the bottom of the voice coil 3.5 and the inner circumference of the positioning bracket 3.6 Connecting, the outer ring of the positioning piece 3.6 is connected to the outer side of the upper end surface of the magnetic cover 3.4, the vibration plate 3.1 is disposed at the upper end of the voice coil 3.5 and connected with the voice coil 3.5, and the magnetic liquid 3.7 is also disposed between the pole piece 3.2 and the voice coil 3.5. Adding a magnetic fluid 3.7 with damping effect to the magnetic field line of the magnet in the voice coil 3.5 and the sound gap of the magnet 3.3 compensates for the unilateral gap of the voice coil 3.5 and the magnet 3.3 is only 0.25 and the actuator 3 itself is insufficiently supported. The vibration imbalance caused by the vibration is greatly reduced, and the sound effect of the sound is greatly improved. The voice coil 3.5 is energized to cause the corresponding vibration of the vibration plate 3.1 industry, causing the radiation panel 2.1 to resonate and emit a resonance sound effect. The material of the vibration plate 3.1 is a car gauge plastic. The strength is good and durable. The material of the positioning piece 3.5 is CONEX material. The CONEX material makes the positioning piece 3.6 have better supporting effect, improves the vibration effect of the exciter 3, further improves the sound effect, and has the double-sided adhesive of the substrate. The substrate of 4 is foam, and the structure is provided with adhesive on both end faces of the foam, and the double-sided adhesive 4 of the substrate is disposed on the top of the vibration plate 3.1, and the actuator 3 is attached to the surface of the radiation panel 2.1 in a vertical state, Double-sided substrate The glue 4 functions to fix the actuator 3 and reduce the mechanical vibration. The fixed cover 5 is provided with a circular groove in which the actuator 3 is embedded, and the bottom end surface of the magnetic cover 3.4 is connected with the circular groove end surface of the fixed cover 5, and the magnetic cover 3.4 The bottom end surface is not in contact with the bottom surface of the circular groove, and the bottom surface of the circular groove is hollowed out. The upper end of the fixed cover 5 is provided with a connecting claw 5.1 connected to the radiation panel 2.1. The connecting claw 5.1 is connected with the radiation panel 2.1 by screws, and the connecting claw 5.1 is connected. The foam 6 pad is provided, and the magnetic cover 3.4 is not in contact with the bottom surface of the circular groove to avoid the adverse effects caused by mechanical vibration, and the hollow structure facilitates the propagation of the resonance sound effect and reduces the damage to the sound quality.

Embodiment 2: Referring to the novel vehicle-mounted vibration radiation headrest surround sound system shown in FIG. 1 and FIG. 2, including a headrest body 1, the headrest body 1 is a general automobile seat headrest, and the headrest body 1 is provided with two Resonance box 2, two resonance boxes 2 are disposed on the left and right sides of the headrest body 1, and the two resonance boxes 2 are bilaterally symmetric with respect to the center of the headrest body 2, and between the resonance case 2 and the headrest body 1 The foam 6 is filled, the foam 6 covers the resonance box 2, and the headrest body 1 is wrapped with the foam 6. The foam 6 makes the resonance box 2 and the headrest body 1 not in contact, and the two resonance boxes Body 2 does not touch.

Referring to FIG. 3 and FIG. 4, the resonant box body 2 is vertically formed into a flat surface of the radiation panel 2.1, and the radiation The inner wall of the panel 2.1 is provided with a resonance source, the resonance source is an exciter 3 having a diameter of 26 mm, the exciter 3 is disposed at a position slightly lower than the center of the radiation panel, and the exciter 3 is adjacent to the side of the radiation panel 2.1 to have a double-sided substrate The glue 4 is adhered to the radiation panel 2.1, and the side of the actuator 3 away from the radiation panel 2.1 is provided with a fixed cover 5 connected to the radiation panel 2.1. The opposite resonance box 2 of the radiation panel 2.1 forms a soundboard, and the inner wall of the soundboard is The phase of the actuator 3 is provided with a phase guiding tube 2.2, and the guiding tube 2.2 has a square convex structure in the vertical direction of the inner wall of the soundboard, and is integrally formed with the resonance box 2, and the guiding tube 2.2 and the resonant box 2 are inclined when installed. The direction is the same, the top end of the guiding tube 2.2 is provided with an inner opening 2.3 located inside the resonant box 2, and the bottom end of the guiding tube 2.2 is provided with an outer opening 2.4 on the outer wall surface of the soundboard, and the inner opening 2.3 is higher than the outer opening 2.4. The level of the exciter 3 is higher than the level of the outer opening 2.4, and the inner volume of the resonance box 2 is proportional to the size of the guiding tube 2.2. The material of the resonance box 2 is 1.5 mm-2 mm thick. Grade plastic, 1.5mm-2mm thick gauge-grade plastic made of resonant box 2 There is good strength, which promotes the sound effect. The radiation panels 2.1 of the two resonance boxes 2.1 are oppositely arranged, and the two radiation panels 2.1 are spaced apart so that the outer openings 2.4 of the two resonance boxes 2 face the left and right sides of the headrest. The outer opening 2.4 makes the sound effect more stereoscopic in different directions, enhances the sound effect, enhances the hearing enjoyment, and the exciter 3 is fixed on the relatively flat radiation panel 2.1 of the resonance box 2, as the radiation source, and the vibration of the exciter 3 causes the radiation panel 2.1 to occur. Resonance, generate resonance sound waves to improve sound effect, flat radiation panel 2.1 can improve resonance effect, and the phase guiding tube 2.2 in the resonance box 2 makes the resonance speaker 2 have good low frequency effect, the position of the phase guiding tube 2.2 and the exciter 3 In contrast, after the resonant sound wave is transmitted to the phase guiding tube 2.2 and guided by the phase guiding tube 2.2, the sound wave is emitted from the inner opening 2.3 to the outer opening 2.4, and is superimposed in the same phase with the resonant sound wave, and the inner opening 2.3 is outwardly open to the outer wall of the plate. Propagating to the outside, making the sound bandwidth, with less distortion, greatly improving the low-frequency sound effect, achieving a rich resonance of the smaller resonance box 2, and a substrate between the exciter 3 and the radiation panel 2.1 The face glue 4 functions to fix and reduce mechanical vibration, eliminating abnormal noise, and the fixed cover 5 fixes the exciter 3 on the inner wall surface of the radiation panel 2.1, thereby fixing the exciter 3 and confining the exciter 3 The amplitude eliminates the abnormal sound caused by the vibration imbalance and greatly improves the sound effect.

Referring to FIG. 7, the two resonance box bodies 2 inside the headrest body 1 are also provided with a tightening resonance box. The bracket 7 of the body 2, the bracket 7 acts as a hoop to the two resonance boxes 2 to strengthen the stability of the resonance box 2, and the bracket 7 is a closed square structure disposed at the periphery of the two resonance boxes 2, The closed-type bracket has a better tightening effect on the resonance box 2, and the stability of the resonance box 2 is ensured. The bottom end of the two resonance boxes 2 and the sound-emitting panel are provided with a recess for the bracket 7. The groove 2.5, the inner groove 2.5 of the two resonance boxes 2 cooperate with the bracket 7, and due to the filling of the foam 7, the resonance box 2 and the bracket 7 are not in contact with each other to avoid mechanical vibration, and the bracket 7 is disposed in the resonance box. In the inner groove 2.5 of the second groove, the space is occupied by the tightening action, and the bracket 7 has the inner rigid support function of the headrest in the headrest body 1, thereby promoting the stability of the headrest, the headrest A headrest bracket can also be provided, and the headrest bracket adjusts the height of the headrest, and the headrest bracket can be connected with the bracket 7 to improve the supporting function of the headrest.

The exciter 3 shown in FIG. 5 and FIG. 6 is composed of a vibrating plate 3.1, a pole piece 3.1, a magnet 3.3, a magnetic cover 3.4, a voice coil 3.5, and a positioning support piece 3.6, and is placed in a horizontal normal state according to the exciter 3, and the vibrating plate 3.1 is located. On At the end, the magnetic cover 3.4 is located at the bottom end, the magnet 3.3 is disposed in the groove provided at the upper end of the magnetic cover 3.4, the pole piece 3.2 is disposed at the upper end of the magnet 3.3, and the voice coil 3.5 and the positioning support piece 3.6 are disposed at the periphery of the pole piece 3.2 and the magnet 3.3. The bottom of the voice coil 3.5 extends below the upper end surface of the magnet 3.3, and the bottom of the voice coil 3.5 is connected with the inner ring of the positioning bracket 3.6. The outer ring of the positioning bracket 3.6 is connected to the outer side of the upper end surface of the magnetic cover 3.4, vibrating The plate 3.1 is disposed at the upper end of the voice coil 3.5 and connected to the voice coil 3.5, and the magnetic liquid 3.7 is further disposed between the pole piece 3.2 and the voice coil 3.5, and a damping effect is added to the sound gap of the voice coil 3.5 and the magnet 3.3. The magnetic fluid 3.7, which can move according to the magnetic field lines of the magnet, compensates for the vibration imbalance caused by the single-edge clearance of the voice coil 3.5 and the magnet 3.3, and the vibration of the exciter 3 itself is insufficient, which greatly reduces the noise and improves the sound effect of the sound. 3.5 energization makes the vibration plate 3.1 industry corresponding vibration, causing the radiation panel 2.1 to resonate and emit resonance sound. The material of the vibration plate 3.1 is car gauge grade plastic, the strength is good and durable, the material of the positioning support piece 3.5 is CONEX material, CONEX material makes Positioning bracket 3.6 It has better supporting effect, improves the vibration effect of the exciter 3, and further improves the sound effect. The substrate with the double-sided adhesive 4 of the substrate is foam, and the structure has the adhesive on both ends of the foam, and has a base. The double-sided tape 4 is disposed on the top of the vibrating plate 3.1, and the exciter 3 is attached to the surface of the radiation panel 2.1 in a vertical state, and the double-sided tape 4 of the substrate functions to fix the exciter 3 and reduce mechanical vibration, and the fixed cover 5 is provided with a circular groove embedded with the exciter 3, the bottom end surface of the magnetic cover 3.4 is connected with the end surface of the fixed cover 5 circular groove, the bottom end surface of the magnetic cover 3.4 is not in contact with the bottom surface of the circular groove, the bottom surface of the circular groove is hollow structure, the fixed cover The upper end of the shell 5 is provided with a connecting claw 5.1 connected to the radiation panel 2.1. The connecting claw 5.1 is connected with the radiation panel 2.1 by screws, and the foaming pad 6 is arranged between the connecting claws 5.1. The magnetic cover 3.4 is not in contact with the bottom surface of the circular groove, and the machine is avoided. The adverse effects of vibration, the hollow structure facilitates the propagation of resonant sound effects and reduces damage to sound quality.

Embodiment 3: Referring to the novel vehicle vibration radiation headrest surround sound system shown in FIG. 1 and FIG. 2, including a headrest body 1, the headrest body 1 is a general automobile seat headrest, and the headrest body 1 is provided with two Resonance box 2, two resonance boxes 2 are disposed on the left and right sides of the headrest body 1, and the two resonance boxes 2 are bilaterally symmetric with respect to the center of the headrest body 2, and between the resonance case 2 and the headrest body 1 The foam 6 is filled, the foam 6 covers the resonance box 2, the head pillow body 1 is wrapped with the foam 6, and the foam 6 makes the resonance box 2 and the headrest The body 1 is not in contact with each other, and the two resonance boxes 2 are not in contact with each other.

Referring to FIG. 3 and FIG. 4, the resonance box body 2 is vertically formed with a flat radiation panel 2.1, and a resonance source is disposed on the inner wall of the radiation panel 2.1. The resonance source is an exciter 3 having a diameter of 26 mm, and the exciter 3 is disposed at At the slightly lower position of the center of the radiant panel, the side of the exciter 3 adjacent to the radiant panel 2.1 is adhered to the radiant panel 2.1 with the double-sided tape 4 of the substrate, and the side of the exciter 3 away from the radiant panel 2.1 is provided with the radiant panel 2.1. The cover 5, the opposite resonance box 2 of the radiation panel 2.1 constitutes a sound-emitting panel, and the inner wall of the sound-emitting panel is provided with a phase-conducting tube 2.2 at a position opposite to the actuator 3, and the inner wall of the sound-emitting panel of the sound-conducting tube 2.2 is vertically The square convex structure is integrally formed with the resonance box body 2, and the guiding phase tube 2.2 and the resonance box body 2 are installed in the same direction of inclination, and the top end of the guiding tube 2.2 is provided with an inner opening 2.3 located inside the resonance box body 2, and the guiding tube 2.2 The bottom end is provided with an outer opening 2.4 on the outer wall surface of the soundboard, the inner opening 2.3 is higher than the outer opening 2.4, and the horizontal height of the exciter 3 is higher than the horizontal height slightly higher than the outer opening 2.4, and the inner volume of the resonant box 2 In proportion to the size of the phase guide tube 2.2, the resonance box 2 The quality is 1.5mm-2mm thick car gauge grade plastic, 1.5mm-2mm thick car gauge grade plastic made of resonance box body 2 has good strength, which promotes the sound effect. The radiation panels 2.1 of the two resonance boxes 2.1 are oppositely arranged. And the distance between the two radiation panels 2.1 is such that the outer openings 2.4 of the two resonance boxes 2 face the left and right sides of the headrest, and the outer opening 2.4 makes the sound effect more stereoscopic in different directions, enhances the sound effect, enhances the hearing enjoyment, and the exciter 3 It is fixed on the radiation panel 2.1 which is relatively flat on the resonance box 2. As the radiation source, the vibration of the exciter 3 causes the radiation panel 2.1 to resonate, and the resonance sound wave is generated to improve the sound effect. The flat radiation panel 2.1 can improve the resonance effect, and the resonance box The phase guiding tube 2.2 in the body 2 makes the resonant speaker 2 have a good low frequency effect, the phase guiding tube 2.2 is opposite to the position of the exciter 3, and the resonant sound wave is transmitted to the guiding phase tube 2.2 and guided by the phase guiding tube 2.2, the sound wave is The inner opening 2.3 is incident on the outer opening 2.4, and is superimposed in the same phase as the resonant sound wave, and the inner opening 2.3 is propagated to the outer opening 2.4 of the outer wall of the board to the outside, so that the sound bandwidth has a small distortion, and the low frequency sound effect is greatly improved. The smaller resonance box 2 produces a rich bass, and the substrate double-sided tape 4 between the actuator 3 and the radiation panel 2.1 functions to fix and reduce mechanical vibration, eliminating abnormal noise, and the fixed cover 5 will be excited. The device 3 is fixed to the inner wall surface of the radiation panel 2.1, thereby fixing the actuator 3 and limiting the amplitude of the exciter 3, Eliminates the abnormal sound caused by the vibration imbalance, greatly improving the sound.

Referring to FIG. 8 , a bracket 7 for tightening the resonance box 2 is further disposed on the periphery of the two resonance boxes 2 inside the headrest body 1 , and the bracket 7 plays a role of tightening the two resonance boxes 2 to The stability of the resonance box 2 is strengthened, and the bracket 7 is a closed annular structure disposed at the periphery of the two resonance boxes 2, and the closed ring bracket 7 has better tightening effect on the resonance box 2, and the stability of the resonance box 2 is ensured. Due to the filling of the foam 7, the resonance box 2 and the bracket 7 are not in contact with each other to avoid mechanical vibration, and the bracket 7 has an internal rigid supporting function in the headrest body 1 to promote the stability of the headrest. The headrest can also be provided with a headrest bracket, and the headrest bracket adjusts the height of the headrest, and the headrest bracket can be connected with the bracket 7 to improve the supporting function of the headrest.

Embodiment 4: Referring to the novel vehicle vibration radiation headrest surround sound system shown in FIG. 1 and FIG. 2, including a headrest body 1, the headrest body 1 is a general automobile seat headrest, and the headrest body 1 is provided with three resonances. The box body 2, the three resonance box bodies 2 are arranged in a shape of a figure inside the headrest body 1, and the two resonance box bodies 2 on the bottom side are bilaterally symmetric with respect to the center of the headrest body 2, and the resonance box body 2 and the headrest The main body 1 is filled with the foam 6, the resonance box 2 and the headrest body 1 are not in contact with each other, and the three resonance boxes 2 are not in contact with each other, refer to Figs. 3 and 4 The resonant box 2 shown in the vertical form is a flat radiant panel 2.1, and the two resonant tanks 2.1 on the bottom side are arranged opposite each other, and the resonant box 2 in the upper direction is horizontally disposed, and the radiant panel 2.1 is oriented. Next, the radiation panel 2.1 is provided with a resonance source, the resonance source is an exciter 3 having a diameter of 26 mm, the exciter 3 is disposed at a slightly lower position of the center of the radiation panel, and the exciter 3 is adjacent to the side of the radiation panel 2.1 with a double-sided adhesive. 4 is adhered to the radiation panel 2.1, and the side of the exciter 3 away from the radiation panel 2.1 is provided with a fixed cover 5 connected to the radiation panel 2.1, and the opposite resonance box 2 of the radiation panel 2.1 forms a soundboard, the inner wall of the soundboard and the excitation The relative position of the device 3 is provided with a guiding tube 2.2, and the guiding tube 2.2 has a square convex structure in the vertical direction of the inner wall of the soundboard, and is integrally formed with the resonance box 2, and the guiding direction of the guiding tube 2.2 and the resonant box 2 is inclined. Consistently, the top end of the guiding tube 2.2 is provided with an inner opening 2.3 located inside the resonant box 2, and the bottom end of the guiding tube 2.2 is provided with an outer opening 2.4 on the outer wall surface of the sounding board, and the inner opening 2.3 is horizontally higher than the outer opening 2.4, and the excitation is performed. The level of the device 3 is higher than the outer opening 2.4 The horizontal height, the inner volume of the resonance box 2 is proportional to the size of the phase guiding tube 2.2, the material of the resonance box body 2 is 1.5mm-2mm thick car gauge grade plastic, and the 1.5mm-2mm thick car gauge grade plastic is made to resonate. The box body 2 has good strength, which promotes the improvement of the sound effect. The outer opening 2.4 of the two resonance box bodies 2 on the bottom side faces the left and right sides of the headrest, and the outer opening 2.4 of the upper side resonance box body 2 faces the upper part of the head, and the outer opening faces differently. The direction makes the sound more stereoscopic, enhances the sound and enhances the listening enjoyment.

The three resonance boxes 2 are embedded in the headrest and are evenly distributed, which releases the space inside the vehicle, greatly reducing the volume and quality of the resonance box, making the car audio system much smaller and reducing the cost. Buried in the headrest, it can control the independent sound, minimize the influence on the passengers inside the car, the resonant box 2 produces resonance sound, the sound effect is good, and the passenger's hearing enjoyment is improved. The exciter 3 is fixed on the radiation panel 2.1. As the radiation source, the vibration of the exciter 3 causes the radiation panel 2.1 to resonate, generating a resonance sound wave, and the flat radiation panel 2.1 can improve the resonance effect and greatly improve the sound effect, and the phase guiding tube 2.2 in the resonant speaker 2 opposite to the exciter 3, The low-frequency sound effect of the resonant speaker 2 is greatly improved. After the resonant sound wave is transmitted to the phase guiding tube 2.2 and guided by the guiding tube 2.2, the sound wave is emitted from the inner opening 2.3 to the outer opening 2.4, and is superimposed in the same phase with the resonant sound wave. 2.3 Spread to the outside of the outer opening 2.4 of the outer wall of the board to make the audio bandwidth There is less distortion, greatly improving the low frequency sound effect, realizing a small resonance box 2 to produce rich bass, the radiation panel 2.1 is relatively flat, reducing the energy consumption, promoting the resonance effect, the inner opening 2.3 is set at the top, the outer opening The horizontal position of 2.4 is close to the horizontal position of the exciter, which improves the phase inversion capability. In conjunction with the mounting state of the headrest, the low-frequency sound effect can be improved to the best, and the double-sided adhesive 4 between the exciter 3 and the radiation panel 2.1 plays. Fixing and reducing the effect of mechanical vibration, eliminating abnormal noise, the fixed casing 5 fixes the exciter 3 on the radiation panel 2.1 of the resonance case 2, thereby fixing the exciter 3 and limiting the amplitude of the exciter 3, eliminating The abnormal sound caused by the vibration imbalance improves the sound effect.

The exciter 3 shown in FIG. 5 and FIG. 6 is composed of a vibrating plate 3.1, a pole piece 3.1, a magnet 3.3, a magnetic cover 3.4, a voice coil 3.5, and a positioning support piece 3.6, and is placed in a horizontal normal state according to the exciter 3, and the vibrating plate 3.1 is located. The upper end, the magnetic cover 3.4 is located at the bottom end, the magnet 3.3 is disposed in the groove provided at the upper end of the magnetic cover 3.4, the pole piece 3.2 is disposed at the upper end of the magnet 3.3, the voice coil 3.5, the positioning support piece 3.6 is disposed at the periphery of the pole piece 3.2, the magnet 3.3 The bottom of the voice coil 3.5 extends below the upper end surface of the magnet 3.3, and the bottom of the voice coil 3.5 is connected with the inner ring of the positioning bracket 3.6. The outer ring of the positioning bracket 3.6 is connected to the outer side of the upper end surface of the magnetic cover 3.4, vibrating The plate 3.1 is disposed at the upper end of the voice coil 3.5 and connected to the voice coil 3.5, and the magnetic liquid 3.7 is further disposed between the pole piece 3.2 and the voice coil 3.5, and a damping effect is added to the sound gap of the voice coil 3.5 and the magnet 3.3. The magnetic fluid 3.7, which can move according to the magnetic field lines of the magnet, compensates for the vibration imbalance caused by the single-edge clearance of the voice coil 3.5 and the magnet 3.3, and the vibration of the exciter 3 itself is insufficient, which greatly reduces the noise and improves the sound effect of the sound. 3.5 energization to make the vibration plate 3.1 industry corresponding vibration, causing The shooting panel 2.1 generates resonance and emits resonance sound. The material of the vibration plate 3.1 is car gauge grade plastic, which has good strength and durability. The material of the positioning piece 3.5 is CONEX material, and the CONEX material makes the positioning piece 3.6 have better supporting effect. The vibration effect of the exciter 3 is improved, and the resonance sound of the headrest is improved.

The substrate of the double-sided tape 4 of the substrate is foam, and the structure is provided with a sticker on both end faces of the foam, the double-sided tape 4 of the substrate is disposed on the top of the vibrating plate 3.1, and the exciter 3 is attached to the radiant panel in a vertical state. 2.1 surface, base The double-sided tape 4 functions to fix the actuator 3 and reduce the mechanical vibration. The fixed cover 5 is provided with a circular groove in which the actuator 3 is embedded, and the bottom end surface of the magnetic cover 3.4 is connected to the circular groove end surface of the fixed cover 5 The bottom end surface of the magnetic cover 3.4 is not in contact with the bottom surface of the circular groove, and the bottom surface of the circular groove is hollowed out. The upper end of the fixed cover 5 is provided with a connecting claw 5.1 connected to the radiation panel 2.1, and the connecting claw 5.1 is connected with the radiation panel 2.1 by screws, and is connected. There is a foam pad 6 between the claws 5.1, and the magnetic cover 3.4 does not contact the bottom surface of the circular groove to avoid the adverse effects caused by mechanical vibration. The hollow structure facilitates the propagation of the resonance sound effect and reduces the damage to the sound quality.

Referring to FIG. 9, the periphery of the three resonance boxes 2 inside the headrest body 1 is further provided with a bracket 7 for tightening the resonance box 2, and the bracket 7 plays a role of tightening the three resonance boxes 2 to The stability of the resonance box 2 is strengthened, and the bracket 7 is a non-closed inverted U-shaped structure disposed at the periphery of the three resonance boxes 2. In order to reduce the occupation of the space, the sound-emitting panel of the resonance box 2 is provided with a concave surface. Slot 2.5, three resonant box bodies 2 arranged in a product structure, the inner groove 2.5 is just matched with the inverted U-shaped structure, and the non-closed inverted U-shaped structural bracket 7 has a better hoop on the outer periphery of the resonance case 2 The tight action ensures the stability of the resonance box 2, and the foam box 7 is filled, so that the resonance box 2 and the bracket 7 are not in contact with each other to avoid mechanical vibration, and the bracket 7 has the headrest inside the headrest body 1 The rigid support acts to improve the stability of the headrest. The bracket 7 is disposed in the inner groove 2.5 of the resonance box 2 to play the tightening effect and also reduce the space occupation. The inverted U-shaped structure facilitates assembly and reduces The difficulty of arranging the resonance box 2 in the headrest body 1 can extend the lower end of the inverted U-shaped structure bracket 7 The bottom of the pillow body 1, the portion extending slots may be provided to cooperate with a seat, a headrest support, height adjustment of the headrest.

The foam 6 is filled between the resonance box 2 and the headrest body 1 and the bracket 7, and the resonance box 2 is firmly fixed in the headrest, and the resonance box 2 is separated from the headrest body 1 and the bracket 7 The mechanical vibration propagation between the resonance box 2 and the headrest body 1 and the bracket 7 is hindered, and the influence of the headrest body 1 and the bracket 7 on the resonance effect of the resonance box 2 is avoided, the distortion of the sound effect is avoided, and the safety is more reliable. Foam 6 has good cushioning property, and the headrest body 1 is generally made of cortex or the like, has good toughness and strength, and is tightly wrapped on the outside. Once an impact accident occurs, the foam 6 can buffer a large amount of energy and avoid resonance. The box body 2 is damaged, and the headrest body 1 also has a certain degree of toughness and strength. If the resonance box body 2 is damaged, the damage is very good. It is difficult to penetrate the foam 6 and the headrest body 1 to avoid the damage that the resonance box 2 may cause to the occupant, and the safety of the present invention is better. Embedded in the headrest, hidden settings, without damaging the aesthetic features of the seat, to meet the real use.

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

The invention relates to a novel vehicle-mounted vibration radiation headrest surround sound system, comprising a headrest body, wherein: the headrest body has at least one resonance box body capable of emitting sound, and the resonance box body and the headrest body are filled with a filling body. Things.
The novel vehicle-mounted vibrating headrest surround sound system according to claim 1, characterized in that: the periphery of the resonance box inside the headrest body is further provided with a bracket for tightening the resonance box body.
The novel vehicle-mounted vibrating headrest surround sound system according to claim 2, wherein the resonance box body is provided with an inner groove for the bracket.
The novel vehicle-mounted vibration radiation headrest surround sound system according to any one of claims 1 to 2, characterized in that the headrest body, the resonance box body and the bracket are not in contact with each other.
The novel vehicle vibration radiation headrest surround sound system according to any one of claims 1 or 2, wherein the bracket is an inverted U-shaped structure, and the inner groove is located on the top and side of the resonance box. .
The novel vehicle vibration radiation headrest surround sound system according to claim 2, wherein the bracket is a closed square or ring structure disposed at a periphery of the resonance box.
The novel vehicle-mounted vibrating headrest surround sound system according to claim 1, wherein the resonant box body has a vertical radiant panel, and the inner wall of the radiant panel is provided with a resonance source, and the resonance source is close to the radiation. One side of the panel is adhered to the radiant panel by a double-sided tape, and a fixed cover connected to the radiant panel is disposed on a side of the resonance source away from the radiant panel, and the opposite resonance frame of the radiant panel is a soundboard, the inner wall of the soundboard and the resonance source A guiding tube is arranged at the opposite position, one end of the guiding tube is an inner opening, and the other end of the guiding tube is provided with an outer opening on the outer wall surface of the sound emitting board.
The novel vehicle vibration radiation headrest surround sound system according to any one of claims 1 to 7, wherein the number of the resonance boxes is two, and the two resonance boxes are inside the headrest body about the center of the headrest body Symmetrically, the radiant panels of the two resonant cabinets are opposite and the two radiant panels are not in contact.
The novel vehicle-mounted vibrating headrest surround sound system according to claim 7, wherein the guiding tube is a convex structure in a vertical direction of the inner wall of the soundboard, the inner opening is higher than the outer opening, and the resonance source is located. Higher than the outer opening is lower than the inner opening.
The novel vehicle vibration radiation headrest surround sound system according to any one of claims 7 or 9, wherein the resonance source is an actuator.
The novel vehicle vibration radiation headrest surround sound system according to claim 1, wherein the filling material is foam.