KR101768531B1 - Low sound generator for vehicles and its installation structure - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular acoustic apparatus using a bass vibration generator for a vehicle and includes a bass vibration generator for outputting at least one of sound and engine sound generated in an electronic device of a vehicle and installed in a seat back of a driver; A control unit for controlling the output of the bass vibration generator to output at least one of a vehicle electronic device and an engine sound; Wherein the bass vibration generator comprises: a first casing having one side opened; A second casing coupled to one side of the first casing to provide an inner space; An elastic body fixed to the first casing; A vibrator elastically supported by the elastic body and including a magnet; A coil which is disposed while maintaining the gap between the vibrator and the internal space, the coil being fixed to the second casing, to which a current for vibrating the vibrator is applied; A low sound is output together with the vibration by the vibration of the vibrator and mounted on the seat back of the driver so that the low frequency band of the output sound from the vehicle electronic equipment and the engine sound are transmitted to the body of the driver as vibration, Provided is a car sound system in which a driver who drives in a vehicle directly feels sound quality and vibration as his / her body so as to travel while enjoying more vibrant driving and sound.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vehicle sound apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a vehicle bass vibration generator, and more particularly, to a bass vibration generator for a vehicle and a mounting structure thereof, which enable a driver of a vehicle to feel sound vigorously and feel an active driving feeling.

As the technology of automobiles has been developed recently, the driving feeling and the sound device of the driver also act as a factor of purchasing power.

For example, in order to improve the sound quality of an automobile acoustical system, a sound electronic device at the time of release may be replaced with a new electronic device, or an additional speaker may be installed.

In recent years, a method of transmitting a part of noise generated from an automobile engine to a driver has been sought to increase the driver's feeling of driving. Particularly, when a hybrid vehicle or an electric vehicle does not utilize the output of the engine and uses the output of the motor, the engine noise and vibration amount are remarkably reduced, which causes the driver to considerably reduce the speed feeling and the driving feeling. The vehicle sound generating apparatus 1 shown in Figs. 1 and 2 may also be mounted as a means for the driver to hear and feel according to the accelerator pedal to be operated. The vibrator 40 supported by the elastic supporter 20 is connected to the coil 30 through a current supply line (not shown) By vibrating in accordance with the signal, the vibrator 40 vibrates, generating vibration and noise.

At this time, the vibrator 40 is formed to have a large mass in order to lower the resonance frequency and is fixed by the position fixing projections 22 of the elastic supporter 20, so that the current waveform applied to the coil 30 through the current supply line And is excited by the principle of electromagnetic induction. The coil 30 is placed in contact with the inner surface of the inner ring 20b shown in Fig. 2 so that a current supply line (not shown) flows into the casing 10 through the inlet 13, .

The elastic support 20 comprises an outer ring 20a and an inner ring 20b, and a connecting elastic body 21 is formed therebetween. Accordingly, when the vibrator 40 vibrates in the vertical direction by the coil 30, the vibrator 40 is allowed to vibrate up and down by the elasticity of the connecting elastic body 21. [ The vibration of the vibrator 40 is transmitted to the vehicle body by fixing the connection bolt 15 at one end of the casing 10 to the vehicle body so that the driver can feel the vibration and the sound generated from the vibrator 40 is transmitted to the outside, . Although not shown in the drawings, one opening of the casing 10 is covered by a lid and functions as one module.

The conventional vehicle bass vibration generator 1 configured as described above can oscillate the vibrator 40 in various forms according to the waveform of the electric current transmitted through the electric current supply line, thereby simultaneously radiating a desired vibration and sound.

However, the conventional vehicular bass vibration generator 1 shown in Figs. 1 and 2 is mounted on the inner ring 20b of the elastic supporter 20 in which the coil 30 vibrates up and down, The current supply line for transmitting the current signal is configured to extend to the coil 30 through the elastic supporter 20 which is vertically excited together with the oscillator 40 so that the current signal line connected to the coil 30 has a lot of noise There is a limitation in controlling sound and vibration as intended and there is a problem that the durability life of the current signal line is lowered.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a vehicular bass vibration generator capable of outputting intact sound quality without distortion of sound quality by keeping the amplitude of the vibrator constant and the vibration direction constant, And to provide the above-mentioned objects.

Best Mode for Carrying Out the Invention The present invention is intended to provide a driver who is driving in a vehicle to feel sound quality more vividly by allowing the low frequency band of the output sound from the vehicle electronic device and the engine sound to be transmitted to the driver's body by vibration, It is intended to make a driver feel a more active feeling by sensing the vibration of a sound.

Particularly, the present invention aims to improve the driver's feeling of driving even by a vibration of 20 Hz or less which can not be felt by a driver's hearing, by allowing vibration to be transmitted to a driver.

The present invention combines the information such as the rotational speed (rpm) of the automobile engine, the engine torque, etc. and the sound signals of various frequency bands stored in advance in accordance with the user's selection mode to output various sounds and vibrations, It is intended to provide a sense of vibration and sound quality.

It is another object of the present invention to minimize an occurrence of noise in a current supply line extending to a coil having a vibrator so as to precisely control the amplitude and frequency of the vibrator as intended so that an active traveling feeling can be felt .

It is another object of the present invention to suppress generation of noise as much as possible while sufficiently ensuring the durability life of the current supply line by disposing the current supply line for transmitting the current signal to the coil having the oscillator so as not to vibrate.

It is another object of the present invention to achieve a reliable operation while improving the assemblability by precisely controlling fine gaps between the coil and the vibrator.

SUMMARY OF THE INVENTION The present invention has been achieved in order to solve the above problems, A second casing coupled to one side of the first casing to provide an inner space; An elastic body fixed to the first casing; A vibrator elastically supported by the elastic body and including a magnet; A coil which is disposed while maintaining the gap between the vibrator and the internal space, the coil being fixed to the second casing, to which a current for vibrating the vibrator is applied; And the bass is outputted together with the vibration by the vibration of the vibrator.

Thus, the coil having the vibrator is fixed to the second casing, and the vibrator is arranged to be resiliently supported by the elastic body fixed to the first casing, so that the coil can be held in position fixed regardless of the vibration of the vibrator, Since a current supply line for transmitting a signal of a current waveform for controlling the oscillator is connected to the coil in a state in which the coil is not oscillated from outside, generation of noise in the current supply line extending to the coil having the oscillator can be minimized, The amplitude and frequency can be accurately controlled according to the intended use, and the durability life of the current supply line can be sufficiently long.

A damper is provided between the vibrator and the second casing so that vibrating energy is dissipated by the damper when the vibrator is excited over an allowable range, It is possible to prevent the bass vibration generator from being damaged by excessive vibration.

The first casing may have a first fixing part protruding at a first height and a second fixing part protruding at a second height different from the first height. The elastic body may be formed in a plate shape And a second elastic body having a plate shape fixed to the second height, wherein the vibrator has upper and lower ends fixed to the first elastic body and the second elastic body so that the first elastic body and the second elastic body, And may be configured to be elastically supported by an elastic body.

As the upper and lower ends of the vibrator are excited in a state elastically supported by the first and second elastic members, the vibration direction of the vibrator is guided by the first elastic member at the upper end and the second elastic member at the lower end, So that the problem of the distortion of the sound quality caused by the variation of the vibration direction of the vibrator is solved.

Here, the first elastic body may be a closed curved surface along the end of the shape of the vibrator and closely contact with the vibrator; An extension extending in the form of a bent portion from the tight contact portion to the first fixing portion; And elastically supports the vibrator by the elasticity of the extended portion.

Likewise, the second elastic body may include a contact portion formed as a closed curved surface along the shape end of the vibrator and closely contacting the vibrator; An extension extending in the form of a bent portion from the tight contact portion to the second fixing portion; And elastically supports the vibrator by the elasticity of the extended portion.

Since the first elastic body and the second elastic body are tightly adhered to the upper surface and the lower surface of the vibrator by the adhered portion and the reciprocating path of the oscillator is ensured in a surely constant linear path, the amplitude of the vibrator is constant The oscillation direction is also fixed and the sound quality can be output as intended without distorting the sound quality and an advantage that the amplitude of the oscillator can be sufficiently secured by the extension portion provided with the bent portion can be obtained.

A connection path is formed in any one of the first casing and the second casing to connect the current supply line connected to the coil to the coil without passing through the vibrator. The current supply line is not affected by the vibrator It is possible to increase the durability life while minimizing the noise.

In addition, the vehicle bass vibration generator according to the present invention is characterized in that a connection bolt fixed to the vehicle is formed on either the first casing or the second casing and is simply fixed to the seat back so that the current waveform The amplitude and the frequency of the vibrator are controlled in accordance with the bass vibration, and the vibration can be vividly transmitted to the driver through the bass vibration generator.

In the meantime, the present invention provides a bass vibration generator as described above, wherein at least one of sound and engine sound generated in an electronic device of a vehicle is output and installed in at least one of a seat back of a driver and a seat bottom; A control unit for controlling the output of the bass vibration generator to output at least one of a vehicle electronic device and an engine sound; And a sound output unit for outputting the sound signal.

Thus, by installing the above-described bass vibration generator in the seat back of the driver and outputting at least one of the sound output from the electronic apparatus such as the automobile audio or the engine sound, the bass vibration of the seat back and the seat bottom The vibration is directly transmitted from the generator to the driver through the seat, so that the output from the electronic device and the engine sound can be felt with a more dynamic feeling.

In particular, it is preferable that the bass vibration generator is mounted on the sponge foam of the driver's seat back. In other words, according to the present invention, at least one of sound and engine sound generated from an electronic device of a vehicle is outputted, and is mounted on both sides of the center of the rear surface of the driver ' A bass vibration generator mounted on the back of the sponge foam of the seat back without being supported by a frame or a plate so as to be supported only on the sponge foam; A control unit for controlling the output of the bass vibration generator to output at least one of a vehicle electronic device and an engine sound; And a sound output unit for outputting the sound signal.
This is because, when the low-frequency vibration generator is mounted on the seat back of the driver, the vibration is closer to the driver's heart than when the low-vibration generator is mounted on the seat bottom. In the seat bottom portion, it is possible to increase the feeling of liveliness by being installed on the sponge foam at a position corresponding to the driver's hip so as to feel the vibration transmitted through the driver's hip.

That is, when mounted on the seat frame, there is a side effect of transmitting vibration to the headrest of the seat to ring the user's head. However, since the bass vibration generator is mounted on the sponge foam of the driver's seat back, The vibration is transmitted to the upper body and the hip of the driver so that the driver can feel uncomfortable and active.

At this time, it is effective that the bass vibration generator is mounted on at least one of the center part of the rear surface of the driver's seat back and both sides of the upper part.

On the other hand, the sensing unit senses at least one of the engine torque, the engine rotation speed, and the throttle valve position of the vehicle. The control unit may be configured to output the engine sound according to the information received from the sensing unit. Accordingly, the vibration according to the engine sound is directly transmitted to the driver from the low-frequency vibration generator installed in the seat back, and the engine sound according to the engine condition according to the driver's operation can be felt more vividly.

The control unit may include a memory for storing noise component data corresponding to the engine torque, the engine rotation speed, and the position of the throttle valve for each frequency band, and the noise component data may be combined And outputting to the bass vibration generator, an engine sound according to various driving patterns is transmitted to the user in the form of vibration and sound, so that a more active feeling of running can be obtained.

As described above, according to the present invention, since the upper and lower ends of the vibrator of the low-frequency vibration generator are excited in a state of being elastically supported by the first elastic body and the second elastic body, respectively, The second elastic body of the second elastic body makes reciprocating vibration movement only in a predetermined direction, and thus the problem of the sound quality is distorted due to the deviation of the vibrating direction of the vibrator, and the sound quality and vibration can be accurately realized An advantageous effect can be obtained.

According to the present invention, a low-frequency vibration generator is mounted on a seat back so that a low-frequency band of an output sound from an automotive electronic device and an engine sound are transmitted to a driver's body by vibration. Thus, sound quality and vibration By feeling directly to the body, it is possible to obtain a favorable effect of traveling while enjoying more lively driving and sound.

In particular, since the present invention transmits vibration to the driver through the bass vibration generator, the driver can feel the sound or engine sound even in a frequency range of 20 Hz or less which is not felt by the driver's hearing, Effect can be obtained.

The present invention combines the information such as the rotational speed (rpm) of the automobile engine, the engine torque, etc. and the sound signals of various frequency bands stored in advance in accordance with the user's selection mode to output various sounds and vibrations, A vibration and a sound quality are provided so that the driver is given an acoustic and vibration that can feel an active driving feeling, so that it is possible to obtain an advantageous effect that the driving fun can be felt more.

In addition, since the present invention enables a current supply line to be connected to a coil without passing through a vibrator, it is possible to minimize the occurrence of noise due to oscillation of a current supply line supplied to the coil, It is possible to obtain an advantageous effect that can accurately oscillate.

In addition, since the current supply line connected to the coil is kept in a state of not swinging, the possibility of breakage due to abrasion of the current supply line and the like can be remarkably reduced and an advantageous effect that a sufficiently long durability life can be realized can be obtained.

The present invention is advantageous in that the insert is injected in a form in which the coil and the lid are integrated, and the alignment of the casing, the vibrator, the coil and the like is facilitated while matching the minute gap between the coil and the vibrator.

Brief Description of Drawings Fig. 1 is an exploded perspective view showing a structure of a conventional vehicle bass vibration generator,
Fig. 2 is a perspective view showing the configuration of the elastic support of Fig. 1,
3 is an exploded perspective view of a vehicle bass vibration generator according to an embodiment of the present invention,
Fig. 4 is an assembled perspective view of Fig. 3,
FIG. 5 is a partially cutaway perspective view of FIG. 5,
Fig. 6 is a perspective view showing the configuration of the second casing and the coil of Fig. 3,
Fig. 7 is a perspective view showing the configuration of the vibrator and the elastic body of Fig. 3,
Fig. 8 is a perspective view of a configuration in which a vibrator is installed in the first casing of Fig. 3,
FIG. 9 is a diagram showing the configuration of the control unit of the bass vibration generator of FIG. 3,
FIG. 10 is a flowchart sequentially showing a control method of the bass vibration generator of FIG. 3;
11 is a diagram showing a configuration obtained by obtaining an output signal of the bass vibration generator of Fig. 10,
FIG. 12 is a view showing a configuration in which the bass vibration generator of FIG. 3 is installed on a vehicle seat;
13 is a photograph showing a configuration in which a bass vibration generator is mounted on a vehicle seat.

Hereinafter, a vehicle bass vibration generator 100 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

3 is an exploded perspective view of the vehicle bipolar vibration generator according to an embodiment of the present invention, Fig. 4 is a perspective view of the coupling of Fig. 3, Fig. 5 is a partially cutaway perspective view of Fig. Fig. 7 is a perspective view showing the configuration of the vibrator and the elastic body of Fig. 3, Fig. 8 is a perspective view of a configuration in which a vibrator is installed in the first casing of Fig. FIG. 10 is a flowchart showing the control method of the bass vibration generator of FIG. 3, FIG. 11 is a view showing a configuration obtained by obtaining an output signal of the bass vibration generator of FIG. 10, and FIG. 12 is a view showing a configuration in which the bass vibration generator shown in Fig. 3 is installed on a vehicle seat, and Fig. 13 is a photograph showing a configuration in which a bass vibration generator is mounted on a vehicle seat.

12, the acoustic apparatus for a vehicle according to an embodiment of the present invention includes the bass vibration generator 100 shown in Figs. 3 to 11 in a state in which the backrest 81 and the bottom portion 82 of the driver seat 8 Or the like.

Thus, by providing the bass vibration generator 100 on the driver's seat back 81 and the seat bottom 82 and outputting at least one of audio output and engine sound from an electronic device such as vehicle audio, The vibration is directly transmitted from the bass vibration generator 100 mounted on the seat 8 to the driver through the seat so that the output from the electronic device and the engine sound can be felt with a more dynamic feeling.

In particular, the bass vibration generator 100 is preferably mounted on the seat back 81 of the driver and the sponge foam 81S of the seat bottom 82. Particularly, when the low-frequency vibration generator 100 is mounted on the seat back 81 of the driver, the vibration is closer to the driver's heart than when the low-vibration generator 100 is mounted on the bottom portion 82 of the seat. However, as shown in FIG. 12, the bass vibration generator 100 may be attached to the sponge foam at both side positions corresponding to the driver's hip of the seat bottom portion 82, so that vibrations can be sensed vigorously through the lower body.

On the other hand, when mounted on the frame 81F of the seat back 81, there is a side effect that vibration is transmitted to the headrest of the seat 8 so that the head of the user is sounded, but the sponge foam 81S The vibration is not transmitted to the head of the driver but the vibration is selectively transmitted to only the upper body of the driver so that a pleasant and active feeling can be obtained.

As shown in FIG. 13, the bass vibration generator 100 is mounted on at least one of the center and both sides of the rear side of the driver's seat back 81, and the seat bottom 82 ) Is attached to both sides of the sponge foam to which the bottom of the sponge comes into contact, and vibration and bass are transmitted toward the heart through both sides of the shoulder and the bottom of the shoulder, the most pleasant and lively feeling can be obtained.

Hereinafter, the construction and operation principle of the vehicle bass vibration generator 100 applied to the car sound system will be described in detail.

3 to 11, the vehicular bass vibration generator 100 according to the embodiment of the present invention includes a first casing 110 having one side opened and a second casing 110 coupled to one side of the first casing 110, An elastic body 150 fixed to the first casing 110 and a vibrator 140 fixed to the elastic body 150 and being elastically supported and including a magnet 142. The second casing 120, A coil 130 which is disposed in the inner space while maintaining the gap between the vibrating body 140 and the vibrating body 140 and is fixed to the second casing 120 to apply a current having the vibrating body 140, An attenuator 170 interposed between the casing 110 and the attenuator 160 interposed between the vibrator 140 and the second casing 120 and a control unit 190 for applying a control current to the coil 130 ).

As shown in FIG. 7, the first casing 110 is formed with an opening on its upper side. The first fixing parts 114 protruded by a first height are protruded from the first casing 110 by 120 degrees. And the second fixing portions 112 protruding lower than the first fixing portions 112 are disposed between the first fixing portions 112 at intervals of 120 degrees.

As shown in FIG. 6, the second casing 120 has an opening formed on the lower side thereof. The second casing 120 is coupled with the first casing 110 and the coupling bolt 85 to form an internal space therein. In this case, an O-ring 89 is fitted between the first casing 110 and the second casing 120 to prevent foreign substances from entering into the inner space. 5, a protrusion 122 protruding in the circumferential direction is formed on the bottom surface of the second casing 120, and serves to fix the upper end of the coil 130 by fitting it.

A connection passage 122 communicating with the internal space is formed on the side surface of the second casing 120 so that the current supply line 139 is directly connected to the coil 130 without passing through the vibrator 140 or the elastic body 150 do.

As the honeycomb lattice is formed in the casing 110 or 120 at an obtuse angle, it assists in propagating the sound and vibration generated in the internal space in a uniformly dispersed form.

As shown in FIG. 6, the coil 130 includes a ring-shaped fixing plate 131 fixedly installed on the second coil 120, and a plurality of bobbins (132). The electric wire wound around the bobbin 132 is connected to the electric current supply line 139 connected from the outside so that electric current is applied to the electric wire wound around the bobbin 132 according to the current waveform applied from the controller 190 not shown in the figure.

The coil 130 is spaced apart from the vibrator 140 that swings up and down and is fixed to the second casing 120 independent of the first and second vibrators 140. Therefore, The occurrence of noise is minimized. 5, the current supply line 139 for supplying the current from the controller 190 to the coil 130 is directly connected to the second casing (not shown) through the connection path 122 of the second casing 110 The current supply line 139 is also connected to the coil 130 at a predetermined position irrespective of the oscillator 140 and the elastic body 116 which are also vertically swinging.

Therefore, the device 100 according to the present invention has a structure in which the current supply line in the conventional device 1 is applied to the coil 30 through the oscillator 40, The lifetime of the current supply line 139 can be ensured to be sufficiently long while the noise generated in the current supply line 139 is minimized.

The vibrator 140 includes a first oscillator 141 in the form of a yoke having a receiving portion formed on the lowermost side as shown in the drawing, a second oscillator 142 formed by a permanent magnet in the middle, 143 are stacked. These vibrators 141, 142, and 143 are held in an integrally joined state, and may be attached with an adhesive or joined by fastening means.

The vibrator 140 is arranged with a micro gap in the radial outward direction from the coil 130, and is relatively large in weight in order to lower the resonance frequency. A plurality of fastening holes 140a are formed around the edges of the upper and lower surfaces of the vibrator 140 so that the vibrator 140 is elastically supported by being coupled to the elastic body 150, respectively.

7, the elastic body 150 includes a first elastic body 151 coupled to and fixed to the upper surface of the vibrator 140, a second elastic body 152 coupled to the lower surface of the vibrator 140, ).

The first elastic body 151 includes a ring-shaped tightening portion 1511 formed of a closed curved surface along the upper end of the first oscillator 141 and closely contacting the first oscillator 141, And is formed as an extended portion 151k extending in the form of a bent portion 150b. The tight fitting portion 1511 is tightly fixed to the upper end of the vibrator 140 by fastening the fixing bolt 81 to the upper hole 141a of the first vibrator 141 through the hole 151a.

Similarly, the second elastic body 152 has a ring-shaped tight contact portion 1521 formed as a closed curved surface along the lower end shape of the first oscillator 141 and closely attached to the first oscillator 141, And an extended portion 152k extending in the form of a bent portion 150b. The tight fitting portion 1521 is tightly fixed to the lower end of the vibrator 140 by fastening the fixing bolt 81 to the lower end hole 141a of the first vibrator 141 through the hole 151a.

7, the first elastic body 151 and the second elastic body 152 tightly fixed to the vibrator 140 are formed such that the end holes 151x of the extending portions 151k and 152k are connected to the first casing 110, And is fixed to the first fixing portion 114 and the second fixing portion 112 by fastening bolts 83. The first elastic member 151 fixed to the upper surface of the vibrator 140 is fixed to the first fixing member 114 having a higher height and the second elastic member 152 fixed to the lower surface of the vibrator 140, Is fixed to the second fixing portion 112 of a lower height.

The extension portions 151k and 152k are formed in a plate shape and include a bent portion 150b so as to allow the plate spring to guide the vibrator 140 only in a predetermined direction, .

As a result, the vibration of the vibrator 140 is absorbed by the first elastic body 151 and the second elastic body 152, respectively, as the upper and lower ends of the vibrator 140 are elastically supported by the first elastic body 151 and the second elastic body 152, 151 and the second elastic body 152 at the lower end so as to reciprocate in a constant direction only. This eliminates the conventional problem that the sound quality is distorted due to a variation in the vibration direction of the vibrator, It is possible to obtain an advantageous effect that vibration can be accurately realized.

The attenuator 170 is installed between the vibrator 140 and the first casing 110 and the attenuator 160 is installed between the vibrator 140 and the second casing 120. For the convenience of installation, the attenuators 160 and 170 are fixed to the second casing 120 and the first casing 110, respectively.

The vibration energy of the vibrator 140 is dissipated by the attenuators 160 and 170 even when the amplitude of the vibrator 140 rapidly increases due to the sudden increase in the magnitude of the current applied to the coil 130, 140) within an allowable range.

In the bass vibration generator 100 constructed as described above, sound and vibration are generated due to the vibration of the heavy vibrator 140, so that the bass vibration generator 100 mainly generates sound and vibration in the low frequency band. Accordingly, the bass vibration generator 100 may be used as a speaker substitute for a dashboard or a rear magnet in front of the driver's seat based on a passenger car. At this time, it can be easily mounted using the connection bolt 125 of the bass vibration generator 100.

The control unit 190 supplies a coil 130 with a current signal for generating sound and vibration output from the bass vibration generator 100. To this end, the control unit 190 includes an information receiving unit 191 for receiving information on the output from the outside, basic data A1, A2, ... B1 for generating control data for generating sound and vibration to be generated , A mode selection unit 193 for selecting a mode of sound and vibration to be generated by the driver, a memory 192 for storing basic data stored in the memory 192, And an operation unit 194 for generating control data in combination.

9, the information receiving unit 191 receives measurement data relating to the engine speed 91 of the automobile, the engine torque 92, and the position 93 of the throttle valve for regulating the amount of supplied mixed gas From the sensing unit (90). The information receiving unit 191 receives sound signals from an electronic device including an audio device, a navigation device, or an external device connected to the Bluetooth device.

11, the memory 192 is provided with an output signal (for example, the received information 1, the received information 2, ...., the received information n) received by the information receiving unit 191 A1, B1, C1, ..., Z1, A2, B2, C2, ..., Z2; For example, when the engine speed is 2000 rpm and the engine torque is 120 kgf.m, basic data (C1, C2, C3, C4) stored for each frequency band is stored in "reception information 3" 11, a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band are divided into a band divided into, for example, 1 to 1000 Hz, 1000 to 5 kHz, 5 kHz to 10 kHz, and 10 kHz to 20 kHz it means.

The mode selection unit 193 allows the driver to designate the mode of driving such as the ECO mode and the sports mode. The mode selection unit 193 may be configured to receive and receive the driver's selection of the driving mode of the vehicle.

The computing unit 194 computes the driving mode selected by the mode selecting unit 193 by the driver, the information about the automobile engine control received from the sensing unit 90, and the acoustic signals received from the electronic apparatuses operating in the vehicle And generates control data capable of outputting optimum sound and vibration, and transmits the generated control data to the coil 130.

10, the control unit 190 receives the acoustic signal from the electronic device and the travel information from the vehicle sensing unit 90 in the information receiving unit 191 (S110). At this time, the control unit 190 may output the low frequency band of the acoustic signal of the electronic device through the bass vibration generator 100 or may output the engine sound according to the traveling state sensed by the vehicle sensing unit 90 . (Hereinafter, the case of outputting the engine sound will be described)

The control unit 190 receives information on the engine specifications regarding the engine speed, the engine torque, the position of the throttle valve, and the like received from the sensing unit 90 in the information receiving unit 191 (when the vehicle is a hybrid vehicle or an electric vehicle The engine torque or the like from the running speed), and searches the memory 192 for suitable " received information " according to the received information specification. For example, the information received by the information receiving unit 191 may correspond to the 'received information 3'.

The weights k1, k2, k3, and k4 are determined for each of the frequency bands of the received information 3 according to the driving mode S120 selected by the driver. For example, in the ECO mode, the weights k3 and k4 for the third frequency band or the fourth frequency band, which are higher in frequency than the first frequency band or the second frequency band, are further increased. In the case of the sports mode, The weights k1 and k2 for the first frequency band and the second frequency band that are low in frequency may be higher than the weights k3 and k4 for the third frequency band or the fourth frequency band. In FIG. 11, the frequency band is divided into four for convenience. However, in the preferred embodiment of the present invention, the frequency band is divided into six to twenty.

C2, C3, and C4, which are basic data of the received signal 3, for the 'received signal 3' corresponding to the information received from the sensing unit 90 according to the traveling mode, B1, B2, B3, and B4, which are basic data of the received signal 2, can be used for calculation of the control data.

The calculation unit 194 calculates a weight determined according to the traveling mode selected by the user in the basic data corresponding to the received signals (the received signal 1, the received signal 2, ..., and the received signal n) received from the sensing unit 90 And the output control data is calculated (S130).

The control unit 190 transmits the control data (current data) calculated by the calculation unit 194 to the coil 130 to have the vibrator 140 according to the current applied to the coil 130, So that the driver can feel the sound and vibration of the low frequency band from the back portion 81 of the driver seat while driving.

According to the present invention configured as described above, the bass vibration generator 100 is mounted on the sponge foam 81S of the seat back 81, and a current is applied to the coil 130 according to the control data transmitted from the controller 190 The sound and vibration of the low frequency band generated as the vibrator 130 vibrates are transmitted to the upper body of the driver through the seat back so that the driver who drives in the vehicle directly feels the sound quality and vibration as the body, It is possible to obtain a favorable effect of traveling while enjoying the driving and sound of the vehicle.

Accordingly, in the present invention, the controller 190 generates a current waveform to be applied to the coil 130 according to a signal generated by an accelerator pedal operated by a driver so that the amplitude and the frequency of the vibrator 140 can be precisely controlled for a long period of time Therefore, it is possible to feel the driver's fun more by applying sound and vibration to the driver to feel an active driving feeling.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

100: vehicle bass vibration generator 110: first casing
120: second casing 130: coil
140: Oscillator 150: Elastic body
160, 170: attenuator 190:
81: seat back 82: seat bottom

Claims (12)

1. A vehicle sound system installed in a vehicle and outputting sound or vibration during running,
The seat back is mounted on both sides of the center of the rear surface of the seat back and on both sides of the seat back and is not supported by a metal frame or plate of the seat back, A bass vibration generator mounted on the back of the sponge foam of the seat back so as to be supported only on the sponge foam;
A control unit for controlling the output of the bass vibration generator to output at least one of a vehicle electronic device and an engine sound;
And a sound output unit for outputting sound.
The method according to claim 1,
A sensing unit for sensing at least one of an engine torque of the vehicle, an engine rotation speed, and a position of a throttle valve;
Wherein the control unit outputs the engine sound in accordance with the information received from the sensing unit.
3. The method of claim 2,
Wherein the controller includes a memory for storing noise component data corresponding to the engine torque, the engine rotation speed, and the position of the throttle valve for each frequency band,
And outputs the combined noise component data to the bass vibration generator in accordance with the information received from the sensing unit.
4. The bass sound generator according to any one of claims 1 to 3,
A first casing having one side opened;
A second casing coupled to one side of the first casing to provide an inner space;
An elastic body fixed to the first casing;
A vibrator elastically supported by the elastic body and including a magnet;
A coil which is disposed while maintaining the gap between the vibrator and the internal space, the coil being fixed to the second casing, to which a current for vibrating the vibrator is applied;
And a low sound is outputted together with the vibration by the vibration of the vibrator.
5. The method of claim 4,
And a damper is provided between the vibrator and the second casing.
5. The method of claim 4,
A first fixing part protruding to a first height and a second fixing part protruding to a second height different from the first height are formed in the first casing,
Wherein the elastic body includes a plate-shaped first elastic body fixed to the first height and a plate-shaped second elastic body fixed to the second height,
Wherein the vibrator is elastically supported by the first elastic body and the second elastic body with upper and lower ends fixed to the first elastic body and the second elastic body.
The method according to claim 6,
The first elastic member
A contact portion formed as a closed curved surface along the shape end of the vibrator and closely contacting the vibrator;
An extension extending in the form of a bent portion from the tight contact portion to the first fixing portion;
And elastically supports the vibrator by elasticity of the extended portion.
The method according to claim 6,
The second elastic member
A contact portion formed as a closed curved surface along the shape end of the vibrator and closely contacting the vibrator;
An extension extending in the form of a bent portion from the tight contact portion to the second fixing portion;
And elastically supports the vibrator by elasticity of the extended portion.
5. The method of claim 4,
Wherein a connection passage is formed in any one of the first casing and the second casing, wherein a current supply line connected to the coil is connected to the coil without passing through the vibrator.
5. The method of claim 4,
Wherein one of the first casing and the second casing is formed with a connecting bolt fixed to the vehicle.

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