CN111891007A - Bone conduction seat headrest - Google Patents
Bone conduction seat headrest Download PDFInfo
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- CN111891007A CN111891007A CN201910382167.1A CN201910382167A CN111891007A CN 111891007 A CN111891007 A CN 111891007A CN 201910382167 A CN201910382167 A CN 201910382167A CN 111891007 A CN111891007 A CN 111891007A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/879—Head-rests with additional features not related to head-rest positioning, e.g. heating or cooling devices or loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
Abstract
A bone conduction seat headrest comprises a headrest skin and a headrest inner core, wherein a novel electric vibration unit is arranged on one side of the head of a human body on the headrest main body of the bone conduction seat, the novel electric vibration unit at least comprises an electric vibration device and a signal filtering mechanism matched with the electric vibration device, the electric vibration device is arranged on the signal filtering mechanism and faces the head of the human body, the signal filtering mechanism is fixedly connected with the headrest main body of the bone conduction seat, the novel electric vibration unit is matched with the headrest main body of the bone conduction seat, the patent firstly enables the vibration energy in the product to be selectively filtered, therefore, the sound leakage phenomenon generated by the headrest main body of the bone conduction seat can be reduced under the condition that the vibration energy output of the electric vibration device to the head of the human body is not reduced, the auditory sensation is not changed, and the problem that the auditory sensation of a user can be degraded after the vibration power of the electric vibration device is directly reduced by the existing sound leakage solution is solved, the market prospect is greatly expanded.
Description
Technical Field
The invention relates to a bone conduction seat headrest, which is mainly used in the application fields of vehicle-mounted hand-free telephone answering, music, man-machine multimedia interaction and the like for drivers and passengers in vehicles.
Background
Prior application ZL201420259874.4 has disclosed a personal hearing device for vehicles, which is capable of transmitting mechanical vibration of sound waves to a user's hearing system through a skull bone of a human body by means of an electric vibration unit installed in a headrest of a seat, and other people cannot transmit the sound wave vibration of the headrest of the seat to other people because the head cannot be in contact with the electric vibration unit of the headrest of the seat, and thus theoretically other people cannot hear, thereby solving a problem that passengers can interfere with each other by listening to different audio frequencies. However, since the electric vibration unit obviously needs to be mounted on the headrest body to transmit to the head of a human body, when the electric vibration unit vibrates the human body, the vibration of the headrest body inevitably causes the vibration of the surrounding air and then the sound which can be directly heard by a nearby person, namely, a sound leakage phenomenon, which is a common problem of such products and is the manifestation of contradictory and unity commonly existing in the nature, the prior art can only solve the problem by reducing the vibration power, but the sound heard by a user is reduced after the vibration power is reduced, and the auditory perception is inevitably influenced. Although the sound leakage phenomenon is generally not great and can be heard by listening to the side ears, the sound leakage phenomenon hardly interferes with the passengers beside the seat, but the sound leakage phenomenon can be heard by the people beside the seat under the extreme conditions that the environment is quite quiet and the distance is quite close, so that the privacy of the existing bone conduction seat headrest product is not perfect and needs to be improved. Therefore, in order to make such products have stronger competitiveness and wider market prospects, the best method is to improve the privacy performance of the products by solving the problem of sound leakage. The technical principle of solving the problem of sound leakage in the prior art is to directly limit or reduce the vibration output power of the electric vibration unit when meeting a use scene with higher privacy requirement. It can be seen that if the contradiction between the privacy and the vibration power is not solved well, the future market space of the products is limited; if the contradiction between privacy and vibration power is solved, the user experience and the use effect of the bone conduction seat headrest can be obviously improved, the competitiveness of the product can be obviously enhanced, the market prospect can be greatly expanded, and the market prospect is very huge.
Disclosure of Invention
In order to solve the above problems, the present invention provides a bone conduction seat headrest capable of reducing sound leakage without affecting the auditory sensation of a user, while maintaining the vibration output power.
The invention relates to a bone conduction seat headrest, which comprises a headrest skin and a headrest inner core in the headrest skin, wherein a novel electric vibration unit is arranged on one side of the headrest main body, which is opposite to the head of a human body, and the bone conduction seat headrest is characterized in that: the novel electric vibration unit at least comprises an electric vibration device and a signal filtering mechanism matched with the electric vibration device, wherein the electric vibration device is arranged on the signal filtering mechanism and faces the head of a human body, and the signal filtering mechanism is fixedly connected with the bone conduction seat headrest main body.
This bone conduction seat headrest, characterized by: the signal filtering mechanism at least comprises a bag filled with fluid substances and a flexible layer covered on one surface of the bag opposite to the head of a human body, the electric vibration device is mechanically connected with the flexible layer, and the bag is mechanically connected with the bone conduction seat headrest main body.
This bone conduction seat headrest, characterized by: the signal filtering mechanism is composed of a spring mechanism and a base for fixing the spring mechanism, wherein the elastic end of the spring mechanism is fixedly connected with an electric vibration device, the fixed end of the spring mechanism is fixedly connected with the base, and the base is fixedly connected with the bone conduction seat headrest main body.
This bone conduction seat headrest, characterized by: the signal filtering mechanism is a block-shaped elastic body with a groove in the front face, the shape of the groove is matched with the shape of an electric vibration device and is used for being embedded into the electric vibration device, and the signal filtering mechanism is fixedly connected with the bone conduction seat headrest main body.
This bone conduction seat headrest, characterized by: the bag comprises a left bag and a right bag, the left bag is connected with the right bag through a conduit, and the conduit is also connected with a pressure regulating module.
This bone conduction seat headrest, characterized by: the electric vibration device is fixed at the movable end of the swing arm, the fixed end of the swing arm is rotatably connected with the base, the base is fixedly connected with the bone conduction seat headrest main body, and the swing arm is in mechanical contact with the flexible layer covered on the bag, so that the bag can be pushed to move after being deformed.
This bone conduction seat headrest, characterized by: the electro-vibrating device is directly fixed in a preformed groove in a flexible layer covering the outside of the capsule.
This bone conduction seat headrest, characterized by: the front outline of the novel electric vibration unit is more than or equal to the contact area of the front surface of the bone conduction seat headrest and the head of a human body, so that the novel electric vibration unit can support the head of the human body by means of the contact area.
This bone conduction seat headrest, characterized by: the back of the electric vibration device is provided with a heat conduction rod, and the other end of the heat conduction rod is provided with a radiating fin.
This bone conduction seat headrest, characterized by: this novel electric vibration unit covers at least that side of installing the electric vibration device has low resonance covering, and the resonance frequency channel of this low resonance covering is inequality with the vibration frequency channel of this electric vibration device main work.
The beneficial effects of the invention are as follows: this patent has changed prior art's product structure, has redesigned novel electric vibration unit and structure assorted bone conduction seat headrest main part with it. Wherein, this novel electric vibration unit mainly comprises electric vibration device and assorted signal filter mechanism with it main part, this electric vibration device is installed on the position of orientation human head direction on assorted signal filter mechanism with it, this signal filter mechanism then installs in the position of orientation human head one side in this osteoacusis seat headrest main part, the electric vibration device in this novel electric vibration unit just can be in human head rear position like this, as long as human head leans on backward just can directly press and make the vibration can directly transmit to human head on electric vibration device. Meanwhile, because the signal filtering mechanism is arranged between the electric vibration device and the bone conduction seat headrest main body, the signal filtering mechanism is provided with the spring buffer structure, the bag buffer structure and the block-shaped elastic body structure, and the signal filtering mechanism only plays a role in filtering vibration in the vibration energy transmission direction, the signal filtering mechanism does not prevent the electric vibration device from vibrating the head of a person, only filters the vibration energy of the electric vibration device to the bone conduction seat headrest main body, and therefore sound leakage is restrained. Obviously, this patent exists the different of essence with the scheme of the direct electric vibration device vibration power that reduces of prior art, this scheme makes the inside vibration energy of this type of product selectively filtered for the first time, consequently, need not reduce the vibration power of electric vibration device and just can solve the sound leakage problem, the vibration energy that transmits for the user simultaneously is not influenced, so the sound that the user heard can not diminish, the sense of hearing also can not receive any influence, this user experience and the result of use that will show improvement this type of bone conduction seat headrest product, the market competitiveness that makes the bone conduction seat headrest product of new generation strengthens by a wide margin, market prospect obtains very big wide exhibition.
Drawings
Fig. 1 is a schematic diagram of an X-shaped leaf spring structure in the first embodiment of the present invention.
Fig. 2 is a schematic view of a structural scheme of a spiral spring supporting swing arm in the first embodiment of the present invention.
Fig. 3 is a schematic diagram of a structure scheme of directly mounting an electric vibration device on a capsule in the second embodiment of the product.
Fig. 4 is a schematic view of a swing arm and bag combined structure scheme in the second embodiment of the present invention.
Fig. 5 is a schematic diagram of a scheme of using a block-shaped elastic body for a signal filtering mechanism in the third embodiment of the product.
Fig. 6 is a schematic view of a structural scheme of a head cushion type novel electric vibration unit in a third embodiment of the present product.
The reference numbers are as follows: 1. the headrest comprises a headrest covering, 2 parts of a headrest inner core, 3 parts of a novel electric vibration unit, 4 parts of an electric vibration device, 5 parts of a signal filtering mechanism, 6 parts of a bag, 7 parts of a low-resonance covering, 8 parts of a spring mechanism, 9 parts of a flexible layer, 10 parts of a base, 11 parts of a pressure regulating module and 12 parts of a heat conducting rod.
Detailed Description
As shown in fig. 1, the bone conduction seat headrest includes a headrest cover 1 and a headrest core 2 inside the headrest cover 1, which constitute a main body of the bone conduction seat headrest. At least one novel electric vibration unit 3 is installed on one side of the headrest main body of the bone conduction seat, which faces the head of a human body. The main body part of the novel electric vibration unit 3 is at least composed of an electric vibration device 4 and a signal filtering mechanism 5 matched with the electric vibration device; of course, according to the specific product design, the novel electric vibration unit 3 may further be covered with a layer of low resonance skin 7 or further be provided with other components such as sensors, electronic switches, and electronic circuits, and the signal filtering mechanism 5 therein may adopt different design schemes such as a spring buffer structure, a bag buffer structure, a block-shaped elastomer structure, and combinations thereof according to the specific product requirements, which are respectively introduced as follows:
first, as shown in fig. 1, the signal filtering mechanism 5 of the present embodiment employs a spring buffer structure. The signal filtering means 5 in this solution consists of two main parts, a spring means 8 and a base 10. Wherein, at least one electric vibration device 4 can be installed on the spring mechanism 8, and certainly, a plurality of electric vibration devices 4 can also be installed at the same time, so the spring mechanism 8 is a specific structure designed and matched according to the installation number of the electric vibration devices 4, for example: when the spring mechanism 8 supports four electric vibration devices 4 simultaneously, the spring mechanism 8 can be designed into an X-shaped leaf spring component, the X-shaped leaf spring component is made by cutting and bending metal sheets, polymer sheets, composite material sheets and the like, the roots of four branches of the X-shaped leaf spring component are all bent inwards by a certain angle to enable the whole body to be in a gathering shape, at the moment, the four electric vibration devices 4 are respectively fixed at the elastic ends of the four branches of the X-shaped leaf spring component, and the central intersection of the X-shaped leaf spring component is fixedly connected with the base 10 through fixed ends, and the components jointly form a main body part of a novel electric vibration unit 3. This novel electric vibration unit 3 passes through base 10 and headrest inner core 2 fixed connection to make this novel electric vibration unit 3 and this bone conduction seat headrest main part fixed connection be a whole. Those skilled in the art can not only process the elastic sheet material into the "X" shaped spring mechanism 8 according to the above description, but also design other spring mechanisms 8 according to the specific installation number and position of the electric vibration device 4, for example, the "X" shape can be converted into "i" shape, "m" shape, "one" shape, etc. Similarly, the leaf spring component can be further developed into a structure of supporting the swing arm by a coil spring as shown in fig. 2, at this time, the movable end of the swing arm is fixedly connected with the electric vibration device 4, the fixed end of the swing arm is rotatably connected with the base 10, and the coil spring is supported between the base 10 and the swing arm. Obviously, the spring mechanism 8 in the above-mentioned solution has good elastic deformation and vibration damping and absorbing capability, so that not only can the vibration transmitted from the electric vibration device 4 to the bone conduction seat headrest body be filtered and the sound leakage be reduced, but also each electric vibration device 4 mounted thereon can be brought into close contact with the hindbrain part of the person under the elastic force of the spring mechanism 8 by virtue of the good elastic deformation capability of the spring mechanism 8, thereby ensuring that the vibration emitted by each electric vibration device 4 can be transmitted to the person with different hindbrain concavo-convex shapes. Because each part of the signal filtering mechanism 5 adopting the spring buffer structure is hard in touch, the novel electric vibration unit 3 made by the scheme needs to be embedded into the main body of the bone conduction seat headrest, only the output end of the electric vibration device 4 is exposed out of the surface of the main body of the bone conduction seat headrest, at the moment, the mounting groove or the matched mounting space for accommodating the novel electric vibration unit 3 needs to be prefabricated inside the inner core 2 of the headrest, namely, the mounting position matched with the structural appearance of the novel electric vibration unit 3 needs to be reserved inside the main body of the bone conduction seat headrest. In addition, the scheme also has the upgrading potential of further improving the vibration attenuation effect, and specifically comprises the following steps: the resonance frequency of the spring mechanism 8 is adjusted to be overlapped with or not overlapped with the main working frequency of the electric vibration device 4 as little as possible, so that the spring mechanism and the electric vibration device have different resonance characteristics, the vibration energy transmitted to the bone conduction seat headrest main body through the spring mechanism 8 can be further reduced, and the sound leakage is further reduced.
In the second embodiment, as shown in fig. 3, the signal filtering mechanism 5 of the present embodiment employs a bag buffer structure. In this embodiment, the signal filtering means 5 is constituted by a capsule 6 filled with a fluid filling such as a gas, a liquid or a plurality of microspheres, and a flexible layer 9 covering the capsule 6. Wherein the bladder 6 can be a flat bladder or an annular bladder, or can be composed of a left bladder, a right bladder and a conduit connecting the left bladder and the right bladder, and the conduit can be connected with the pressure regulating module 11 to change the pressure and the shape of the bladder 6 at any time. The capsule 6 is covered at least on the front side, i.e. the side opposite the human head, with a flexible layer 9, and the electric oscillating device 4 is directly embedded in a preformed groove in the flexible layer 9, which groove is adapted to the size of the electric oscillating device 4, i.e. the electric oscillating device 4 can be embedded in the groove. The back surface of the bag 6, that is, the surface that contacts the bone conduction seat headrest body is a fixed surface that is mechanically connected to the bone conduction seat headrest body by a fastener such as a screw or a bayonet. Because the bag class structure has the advantage that the elastic buffering characteristic is good and adjustable and the characteristic that the bag face pressure is equal, wherein the good elastic buffering characteristic can effectively filter the vibration from the electric vibration device 4, the vibration transmitted to the bone conduction seat headrest main body is further reduced, the sound leakage is smaller, especially, the pressure adjusting module 11 can be used for changing the internal pressure of the bag 6 to adjust the elastic characteristic of the bag 6, so that the resonance frequency of the bag 6 is changed, at the moment, the buffering attenuation performance of the bag 6 on the vibration from the electric vibration device 4 can be adjusted at any time, and the bag buffering structure has a better sound leakage inhibiting effect. The second advantage is that: the equal characteristic of the bag surface pressure of the bag 6 can ensure that the contact pressure of each electric vibration device 4 arranged on the flexible layer 9 covered on the surface of the bag and the hindbrain part of a human body is equal, so that the vibration intensity of each electric vibration device 4 to the head of the human body is the same, the auditory perception transmitted by each electric vibration device 4 to the human body can be kept consistent, and the integral tone quality of the product is better. The reason is that the difference of the concavo-convex shape of the human hindbrain of different ages and different sexes is large, if the spring buffer structure of the first embodiment is adopted, the compression stroke of the spring connected behind each electric vibration device 4 is different and the elastic force is different due to the difference of the concavo-convex shape of the human hindbrain, so that the pressure of the electric vibration device 4 arranged at the elastic end of each spring on the human hindbrain is different, the vibration strength transmitted by the different pressures is different, and the tone quality is different naturally, and the optimal scheme for solving the defect is that the bag surface pressure equality characteristic of the bag buffer structure is utilized to adapt to the concavo-convex shape difference of the human hindbrain, so that the pressure of each electric vibration device 4 on the head of the human body is; similarly, when the angle of the head leaning against the headrest changes left and right and changes in pitch, the same characteristic of the pressure of the bag surface can be utilized to enable the pressure of each electric vibration device 4 to be consistent to the head of the human body, so that the tone quality is not influenced by the rotation of the head. The flexible layer 9 is a soft structural layer covering the wall surface of the bag 6, and is generally made of a material having soft, comfortable, sound-insulating, and vibration-isolating properties, such as a sponge, a fiber mat, or a rubber foam. The electric vibration device 4 can be directly embedded into a groove prefabricated on the flexible layer 9, and can also be directly fixed on the surface of the flexible layer 9, and is specifically determined by engineers according to the specific design requirements of products. When the electric vibration device 4 is directly fixed on the surface of the flexible layer 9, a soft pad with the same thickness is required to be sleeved on the periphery of the electric vibration device 4, so that the electric vibration device 4 is prevented from pressing against the human body due to protruding from the flexible layer 9. Since the flexible layer 9 is located on the vibration conduction path between the electric vibration device 4 and the balloon 6, the flexible layer 9 can buffer, attenuate or absorb the vibration transmitted from the electric vibration device 4 to the balloon 6, and since the flexible layer 9 covers the balloon 6, the flexible layer can also play a role in suppressing the transmission of the vibration energy on the surface of the balloon 6 to the air, thereby suppressing the sound leakage of the balloon 6 caused by the self-vibration. In addition to the above two solutions for mounting the electric vibration device 4 on the flexible layer 9, the swing arm structure of the first embodiment and the bladder 6 of the present embodiment can be combined to form a new structural solution, as shown in fig. 4: electric vibration device 4 installs the expansion end at the swing arm, the stiff end of this swing arm then rotates with base 10 to be connected, annular bag 6 then is installed in this swing arm below and with this swing arm mechanical contact this moment, play coil spring and promote swing arm pivoted same effect in figure 2 of similar embodiment one, pressure regulating module 11 is connected with annular bag 6 through the pipe this moment, the bloated degree of bag 6 just can be changed to the pressure of this pressure regulating module 11 adjustment bag 6, and then promote swing arm swing motion, thereby make this product have certain shape regulatory ability, make man-machine efficiency better, the comfort level is better.
In the third embodiment, as shown in fig. 5, the signal filtering mechanism 5 of the present embodiment is a block-shaped elastic body structure. In this embodiment, the signal filtering mechanism 5 is a block-shaped elastic body made of a material having a damping and damping effect on vibration, such as sponge, rubber, a polymer material, and a latex foam material. The block-shaped elastomer body has a front side facing the human head, in which a recess for receiving the electric vibration device 4 is provided. The shape of the recess matches the outer shape of the electric vibration device 4, i.e. the contour of the recess matches the outer shape of the electric vibration device 4, so that the electric vibration device 4 can be embedded. The electric vibration device 4 has different specifications and different shapes, has the shape of a traditional cuboid, and has a complex shape such as a heat conduction rod 12 at the rear part as shown in figure 6, but the signal filtering mechanism 5 is only provided with a groove with a corresponding shape in any shape. In the actual design, the signal filtering mechanism 5 can adopt a soft latex foam porous material casting, a mould pressing piece and a hot pressing piece to meet the shape requirement, and can also adopt other high polymers or composite materials and other processing technologies to manufacture the block-shaped elastomer. The front side of the signal filtering mechanism 5, that is, the side of the human hindbrain, is provided with at least one groove for embedding the electric vibration device 4, so that at least one electric vibration device 4 can be installed on the signal filtering mechanism 5, and a plurality of grooves can be designed for installing a plurality of electric vibration devices 4. The main structure of the novel electric vibration unit 3 of the scheme is formed by the signal filtering mechanism 5 and the embedded electric vibration device 4. This novel electric vibration unit 3 generally has two kinds of mounting forms with bone conduction seat headrest main part: the first is to directly insert the novel electric vibration unit 3 into a mounting groove prefabricated on the headrest inner core 2, as shown in fig. 5. At this time, the novel electric vibration unit 3 may be fixedly connected to the bottom or the side wall of the mounting groove through the back or the side wall thereof. The specific shape and size of the mounting groove are determined according to the shape of the novel electric vibration unit 3; of course, the size of the installation groove can be larger than that of the novel electric vibration unit 3, so that the side wall of the novel electric vibration unit 3 and the side wall of the installation groove are kept in a non-contact state, and at the moment, the back of the novel electric vibration unit 3 is fixedly connected with the bottom surface of the installation groove; the second installation form of the third embodiment is shown in fig. 6, at this time, the shape of the novel electric vibration unit 3 can be designed to be as large as the size of the front surface of the main body of the bone conduction seat headrest, and the novel electric vibration unit directly covers the front surface of the main body of the bone conduction seat headrest and directly bears the supporting effect of leaning on the head of a human body, so that the corresponding installation groove does not need to be prefabricated for the inner core 2 of the headrest, the production process of the inner core 2 of the headrest is simplified, and the cost of the inner core 2 of the headrest is reduced. In the same way, as long as the front contour of the novel electric vibration unit 3 is greater than or equal to the area where the head of the human body contacts with the front surface of the headrest of the bone conduction seat, the novel electric vibration unit 3 can be directly installed on the front surface of the headrest of the bone conduction seat to support the leaning head, that is, the novel electric vibration unit 3 is directly changed into a special head cushion structure on the front surface of the headrest of the bone conduction seat at the moment, as shown in fig. 6. Because this novel electric vibration unit 3 has belonged to external installation state this moment, can't recycle the guard action that the embedding headrest inner core 2 mounting groove brought, consequently at this moment preferably with electric vibration device 4 and signal filter mechanism 5 constitutes the outside one deck low resonance covering 7 that wraps up again of functional unit outside and play the guard action, as shown in fig. 6.
The back surface of the electric vibration device 4, that is, the surface facing the headrest body of the present bone conduction seat has a heat conduction rod 12, and the other end of the heat conduction rod 12 has a heat radiation fin, as shown in fig. 6. The heat conducting rod 12 penetrates through a hole at the bottom of a prefabricated groove on the block-shaped elastic body of the signal filtering mechanism 5, the headrest inner core 2 and the like, and then the heat radiating fins are exposed in the air for heat radiation. The novel electric vibration unit has the advantages that the problem that the signal filtering mechanism 5 of the block-shaped elastic body structure blocks the heat dissipation of the embedded electric vibration device 4 is solved, and the low sound leakage structure of the novel electric vibration unit 3 does not influence the reliability of the novel electric vibration unit.
The resonance frequency band of the low-resonance skin 7 avoids the vibration frequency band of the main work of the electric vibration device 4 as much as possible, so that sound leakage caused by resonance is prevented, and the requirements of the low-resonance skin 7 on the resonance frequency band can be met by using gauze-shaped textiles, perforated leather, 3D textiles and the like. The use of the low-resonance skin 7 as the external integral wrapping layer of the novel electric vibration unit 3 has the advantages of simple structure and insufficient aesthetic property, and the material selection range of the low-resonance skin 7 is limited mainly because the low-resonance skin 7 has the resonance frequency limitation. In order to solve the problem, the low-resonance skin 7 can be only partially covered, and the specific structure is as follows: the low-resonance coating 7 covers only the front side of the signal filter 5, i.e. the side in which the electric vibration device 4 is embedded, and the side and bottom sides of the signal filter 5 may be optionally made of other coating materials, as shown in fig. 6. Of course, if the novel electric vibration unit 3 adopts the spring structure scheme as in the first embodiment, since the novel electric vibration unit 3 is already built in the headrest body of the bone conduction seat, and only the vibration surface of the electric vibration device 4 is exposed from the opening of the headrest skin 1, the low-resonance skin 7 may not be used for wrapping at this time, as shown in fig. 1. In addition, if the resonance frequency band of the headrest skin 1 selected by the bone conduction seat headrest product is not overlapped or slightly overlapped with the main working vibration frequency band of the electric vibration device 4, the surfaces of the electric vibration device 4 and the signal filtering mechanism 5 can be directly covered by the headrest skin 1, and the headrest skin 1 is equivalent to the low-resonance skin 7. In this embodiment, in order to further reduce the effect of the vibration transmitted from the electric vibration device 4 to the bone conduction seat headrest body, the signal filtering mechanism 5 of the block-shaped elastic body structure may be further improved, for example, the resonance frequency band of the signal filtering mechanism 5 itself may be kept away from the main vibration frequency band of the electric vibration device 4 as much as possible, so that the two frequency bands may be overlapped as little as possible or not, and thus the vibration transmitted from the signal filtering mechanism 5 to the bone conduction seat headrest body may be further reduced.
Although specific terms are used in the present specification, these terms are merely for convenience of description and do not limit the present invention in any way, for example, the headrest skin 1 refers not only to a surface structure made of leather, cloth, etc., but also to an existing headrest surface structure including other materials, etc., in a broad sense; for example, the headrest inner core 2 not only refers to the inner structure of the headrest formed by sponge, silk floss, foam plastic and the like, but also refers to the inner structure of other existing headrests such as a bracket or a structural member which is processed by plastic, metal and the like; and the above-mentioned several structural schemes can be implemented alone, can also be implemented in combination each other, also belong to this patent protection scope. Therefore, this patent is not limited to the specific embodiments disclosed and described above, and other modifications and variations of the present invention are also within the scope of the present patent.
Claims (10)
1. The invention relates to a bone conduction seat headrest, which is characterized in that a headrest main body is formed by a headrest skin (1) and a headrest inner core (2) in the headrest skin (1), and a novel electric vibration unit (3) is arranged on one side of the headrest main body, which is opposite to the head of a human body, of the bone conduction seat headrest main body: the novel electric vibration unit (3) is at least composed of an electric vibration device (4) and a signal filtering mechanism (5) matched with the electric vibration device, wherein the electric vibration device (4) is installed on the signal filtering mechanism (5) and faces to the head of a human body, and the signal filtering mechanism (5) is fixedly connected with the bone conduction seat headrest main body.
2. The bone conduction seat headrest of claim 1, wherein: the signal filtering mechanism (5) is at least composed of a bag (6) filled with fluid substances and a flexible layer (9) covering one surface of the bag (6) opposite to the head of a human body, the electric vibration device (4) is mechanically connected with the flexible layer (9), and the bag (6) is mechanically connected with the headrest main body of the bone conduction seat.
3. The bone conduction seat headrest of claim 1, wherein: the signal filtering mechanism (5) is composed of a spring mechanism (8) and a base (10) for fixing the spring mechanism (8), wherein the elastic end of the spring mechanism (8) is fixedly connected with the electric vibration device (4), the fixed end of the spring mechanism (8) is fixedly connected with the base (10), and the base (10) is fixedly connected with the main body of the bone conduction seat headrest.
4. The bone conduction seat headrest of claim 1, wherein: the signal filtering mechanism (5) is a block-shaped elastic body with a groove in the front face, the shape of the groove is matched with the shape of the electric vibration device (4) and is used for being embedded into the electric vibration device (4), and the signal filtering mechanism (5) is fixedly connected with the bone conduction seat headrest main body.
5. The bone conduction seat headrest of claim 2, wherein: the bag (6) comprises a left bag and a right bag, the left bag and the right bag are connected through a conduit, and the conduit is also connected with a pressure regulating module (11).
6. The bone conduction seat headrest of claim 2, wherein: the electric vibration device (4) is fixed at the movable end of the swing arm, the fixed end of the swing arm is rotatably connected with the base (10), the base (10) is fixedly connected with the bone conduction seat headrest main body, and the swing arm is in mechanical contact with the flexible layer (9) covered on the bag (6), so that the swing arm can be pushed to move after the bag (6) is deformed.
7. The bone conduction seat headrest of claim 2, wherein: the electric oscillating device (4) is directly fixed in a groove prepared on a flexible layer (9) covered outside the capsule (6).
8. The bone conduction seat headrest of claim 4, wherein: the front outline of the novel electric vibration unit (3) is more than or equal to the contact area of the front surface of the bone conduction seat headrest and the head of the human body, so that the novel electric vibration unit (3) can support the head of the human body by means of the contact area.
9. The bone conduction seat headrest of claim 4, wherein: the back of the electric vibration device (4) is provided with a heat conduction rod (12), and the other end of the heat conduction rod (12) is provided with a radiating fin.
10. The bone conduction seat headrest of claim 1, wherein: the novel electric vibration unit (3) is at least covered with a low-resonance skin (7) on the surface provided with the electric vibration device (4), and the resonance frequency band of the low-resonance skin (7) is different from the main working vibration frequency band of the electric vibration device (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382167.1A CN111891007A (en) | 2019-05-06 | 2019-05-06 | Bone conduction seat headrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910382167.1A CN111891007A (en) | 2019-05-06 | 2019-05-06 | Bone conduction seat headrest |
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| Publication Number | Publication Date |
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| CN111891007A true CN111891007A (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910382167.1A Pending CN111891007A (en) | 2019-05-06 | 2019-05-06 | Bone conduction seat headrest |
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| CN (1) | CN111891007A (en) |
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| JP2004275419A (en) * | 2003-03-14 | 2004-10-07 | Toshiba Life Engineering Kk | Device for resting head part provided with built-in head receptacle |
| JP2007125071A (en) * | 2005-11-01 | 2007-05-24 | Yoshida Dental Mfg Co Ltd | Head holder with built-in bone-conduction speaker |
| CN101213867A (en) * | 2006-02-28 | 2008-07-02 | 歌拉利旺株式会社 | Bone vibration sound seat |
| CN103434424A (en) * | 2013-09-09 | 2013-12-11 | 吕昆伦 | Bone conduction sound transmission seat |
| JP3219108U (en) * | 2018-09-18 | 2018-11-29 | 伊藤 正 | Bone conduction speaker built-in headrest |
| CN214355671U (en) * | 2019-05-06 | 2021-10-08 | 陈明 | Bone conduction seat headrest |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004275419A (en) * | 2003-03-14 | 2004-10-07 | Toshiba Life Engineering Kk | Device for resting head part provided with built-in head receptacle |
| JP2007125071A (en) * | 2005-11-01 | 2007-05-24 | Yoshida Dental Mfg Co Ltd | Head holder with built-in bone-conduction speaker |
| CN101213867A (en) * | 2006-02-28 | 2008-07-02 | 歌拉利旺株式会社 | Bone vibration sound seat |
| CN103434424A (en) * | 2013-09-09 | 2013-12-11 | 吕昆伦 | Bone conduction sound transmission seat |
| JP3219108U (en) * | 2018-09-18 | 2018-11-29 | 伊藤 正 | Bone conduction speaker built-in headrest |
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