WO2023222002A1 - 一种骨传导振动发声装置、骨传导眼镜及可穿戴设备 - Google Patents

一种骨传导振动发声装置、骨传导眼镜及可穿戴设备 Download PDF

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Publication number
WO2023222002A1
WO2023222002A1 PCT/CN2023/094640 CN2023094640W WO2023222002A1 WO 2023222002 A1 WO2023222002 A1 WO 2023222002A1 CN 2023094640 W CN2023094640 W CN 2023094640W WO 2023222002 A1 WO2023222002 A1 WO 2023222002A1
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WO
WIPO (PCT)
Prior art keywords
bone conduction
vibration
conduction vibration
coil
housing
Prior art date
Application number
PCT/CN2023/094640
Other languages
English (en)
French (fr)
Inventor
陶志勇
付杨帆
陈娟
曹洪斌
Original Assignee
苏州索迩电子技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 苏州索迩电子技术有限公司 filed Critical 苏州索迩电子技术有限公司
Publication of WO2023222002A1 publication Critical patent/WO2023222002A1/zh

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Classifications

    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers

Definitions

  • the present invention relates to the field of bone conduction technology, and in particular to a bone conduction vibration sound device, bone conduction glasses and wearable equipment.
  • Bone conduction sound transmission is a transmission method that causes hearing through bones.
  • Wearable devices such as bone conduction headphones and bone conduction glasses generate vibrations through bone conduction vibration sound devices, allowing people to hear sounds.
  • Bone conduction vibration sound-generating devices often include a shell, a vibration component located in the shell, a spring piece connected between the shell and the vibration component, and a coil that drives the vibration component to vibrate.
  • the vibration component is magnetic and vibrates under the magnetic field of the energized coil. And can be reset under the action of shrapnel.
  • the bone conduction vibration sound device of bone conduction earphones is usually cylindrical.
  • the bone conduction vibration sound device used in most bone conduction glasses currently usually directly uses a bone conduction vibration sound device similar to the bone conduction earphone, which is on the bone conduction glasses.
  • the cylindrical part is used to install the bone conduction vibration and sound device. This structure is relatively abrupt and is not conducive to maintaining the original structure of the glasses.
  • the bone conduction vibration and sound-generating device can be arranged into a strip-shaped structure, it will be beneficial to install it into the temples of bone conduction glasses and reduce the impact on the original structure of the glasses.
  • the width of the elastic piece of the strip-shaped bone conduction vibration sound-generating device is small. If the elastic piece in the prior art is directly used, it is easy to increase the risk of failure because the width of the elastic portion that produces elastic deformation is too small.
  • the vibration component of the bone conduction vibration and sound device is usually only provided with a spring piece connected to the shell at one end, and the other end is suspended in the air.
  • the vibration component may produce a rolling vibration phenomenon that swings left and right. This situation occurs in the vibration component. This is especially true in the case of long and narrow strips.
  • the occurrence of rolling vibration makes the vibrating components easily hit external parts during the vibration process, causing noise, which not only affects the sound quality, but also easily damages the parts.
  • the object of the present invention is to provide a bone conduction vibration sounding device, bone conduction glasses and wearable equipment that can reduce the rolling vibration phenomenon during the vibration process of the vibration component.
  • the present invention proposes a bone conduction vibration sound-generating device, including:
  • the shell is provided with a receiving cavity
  • a vibration component is located in the receiving cavity
  • a coil is fixed relative to the housing and surrounds the outer circumference of the vibration component
  • the elastic pieces include a partition and two connecting arms respectively connected to both sides of the partition.
  • the connecting arms include and The connecting part connected to the vibration components and the elastic part connected between the connecting part and the partition plate.
  • the elastic part includes at least one folded part, and the folded part includes two strip-shaped first parts that are relatively spaced apart and a second part that connects the ends of the two first parts.
  • the two connecting arms are arranged axially symmetrically or centrally symmetrically, and the two spring pieces are centrally symmetrically arranged or axially symmetrically arranged at both ends of the vibration assembly.
  • connecting portion and the partition plate are spaced apart in the thickness direction of the elastic piece, and the connecting portion of the two connecting arms is located on a side of the elastic piece facing the vibration component.
  • the elastic part is inclined toward the vibration component.
  • the elastic piece includes an annular outer ring body, and the partition plate is connected to the outer ring body and divides the inner hole of the outer ring body into third holes spaced apart along the length direction of the elastic piece. A region and a second region, the two connecting arms are respectively provided in the first region and the second region.
  • the length direction of the first region and the second region is consistent with the length direction of the elastic piece, and the two connecting arms are arranged along the length direction of the elastic piece.
  • both ends of the housing are open, and the outer ring body is connected to the end surface of the open end of the housing.
  • the bracket includes a first surface connected to the housing and a second surface opposite to the first surface. During the vibration of the vibration component, the connecting arm does not exceed the second surface of the bracket. surface.
  • the vibration component is a split structure, which includes a magnetically conductive plate and is connected to the Two magnets at both ends of the magnetic conductive plate, the two magnets are arranged oppositely with the same pole, and the coil surrounds the outer periphery of the magnetic conductive plate; or,
  • the vibration component is an integrated structure, which includes a magnetic conductive part and two magnetic parts respectively located at both ends of the magnetic conductive part.
  • the two magnetic parts are arranged opposite to each other with the same pole, and the coil surrounds the magnetic conductive part. Periphery; or,
  • the vibrator includes a magnet and two magnetic conductive plates connected to both ends of the magnet.
  • the magnet is magnetized along the vibration direction of the vibration component, and at least one of the magnetic conductive plates is surrounded by one of the coils. .
  • the outer peripheral surface of the housing is provided with a mounting hole for mounting the coil, and the mounting hole is a blind hole or a through hole.
  • the opening of the mounting hole gradually increases toward the outside.
  • the housing is provided with one or more bosses protruding into the mounting holes, and the bosses are used to limit the position of the coil in the height direction.
  • the boss located above the coil is in contact with the upper end of the coil, and the boss located below the coil is in contact with the lower end of the coil.
  • the housing is integrally formed; or,
  • the housing includes an upper housing and a lower housing connected to each other, and the connection surface of the upper housing and the lower housing passes through the mounting hole.
  • the aspect ratio of the bone conduction vibration sound-generating device is 1.2-8.
  • the bone conduction vibration sound-generating device is in the shape of a strip, with an aspect ratio of 3 to 5.
  • the aspect ratio of the bone conduction vibration sound-generating device is 4.
  • the present invention proposes bone conduction glasses, including the bone conduction vibration sound device described in any one of the above.
  • the present invention proposes a wearable device, including the bone conduction vibration sound-generating device as described in any one of the above.
  • the present invention has the following beneficial effects:
  • both ends of the vibration component in the vibration direction are connected to the shell through elastic pieces, which enables the two ends to be elastically connected to the shell.
  • the linearity is better and rolling vibration is less likely to occur, thereby improving the Sound quality, reducing the impact of vibration components and coils or other parts The risk of distortion is smaller.
  • the two connecting parts of the elastic piece are connected to two spaced apart parts of the vibration component, which can improve the reliability of the connection with the vibration component and make the linearity and stability of the vibration component better when it vibrates.
  • Figure 1 is a schematic three-dimensional view of a bone conduction vibration sound-generating device according to an embodiment of the present invention.
  • FIG. 2 is a top view of the bone conduction vibration sound-generating device shown in FIG. 1 .
  • FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2 .
  • FIG. 4 is a schematic three-dimensional view of the elastic piece of the bone conduction vibration sound-generating device shown in FIG. 1 .
  • FIG. 5 is a top view of the elastic piece in FIG. 4 .
  • FIG. 6 is a schematic structural diagram of the connecting part and the elastic part of the elastic piece in FIG. 4 .
  • Figure 7 is a schematic three-dimensional view of a spring piece according to an embodiment of the present invention.
  • Figure 8 is a schematic three-dimensional view of a spring piece according to an embodiment of the present invention.
  • FIG. 9 is a front view of the elastic piece shown in FIG. 4 .
  • Figure 10 is a plan view of a spring piece according to an embodiment of the present invention.
  • FIG. 11 is a schematic three-dimensional view of the housing of the bone conduction vibration sound-generating device shown in FIG. 1 .
  • FIG. 12 is a perspective view of the lower housing of the housing shown in FIG. 11 .
  • FIG. 13 is a front view of the housing of the bone conduction vibration sound-generating device shown in FIG. 11 .
  • Figure 14 is a schematic diagram of the connection between the coil and the housing according to an embodiment of the present invention.
  • FIG 15 is a schematic diagram of the positions of the vibration component and the coil according to an embodiment of the present invention. In the figure, the vibration component is split.
  • Figure 16 is a schematic diagram of the position of the vibration component and the coil according to an embodiment of the present invention. In the figure, the vibration component is integrated.
  • Figure 17 is a schematic diagram of the position of the vibration component and the coil according to an embodiment of the present invention. In the figure, the number of coils is two.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • the present invention proposes a bone conduction vibration sound device, which includes a shell 1 , a vibration component 2 , a coil 3 and a spring piece 4 .
  • the bone conduction vibration and sound-generating device is in the shape of a strip as a whole.
  • its vibration component 2, coil 3 and spring piece 4 are also in the shape of a strip
  • the length direction of the bone conduction vibration sound-making device, shell 1, vibration component 2, coil 3 and spring piece 4 is Consistently, the X-axis in Figure 1 indicates the length direction, and the Y-axis and Z-axis are the width and height directions respectively.
  • a strip-shaped bone conduction vibration and sound-generating device is more suitable for installation in a strip-shaped space.
  • a strip-shaped bone conduction vibration and sound-generating device is more suitable for installation on a strip-shaped temple. inside, and has little impact on the shape of the temples.
  • the housing 1 is a mounting carrier for the vibration component 2, the coil 3 and the elastic piece 4, and is provided with a receiving cavity 10.
  • the housing 1 can be made of plastic, aluminum or stainless steel, for example.
  • the vibration component 2 is disposed in the accommodation cavity 10.
  • the vibration component 2 can vibrate along the vibration direction (ie, the Z-axis direction).
  • the housing 1 has openings at both ends along the vibration direction, and the area of the opening is larger than the cross-sectional area of the vibration component 2.
  • the vibration component 2 can be installed into the receiving cavity 10 through the opening, making assembly more convenient.
  • the coil 3 is relatively fixed to the housing 1 and surrounds the outer circumference of the vibration component 2. It can be energized to generate a changing magnetic field, thereby causing the vibration component 2 to vibrate under the interaction with the magnetic field. That is, the coil 3 is used to drive the vibration component 2 to vibrate. As shown in Figures 2 and 3, an electrically connected coil 3 is provided outside the housing 1.
  • the terminal board 5 is connected to an external control circuit, and the coil 3 drives the vibration component 2 to vibrate under the control of the external control circuit.
  • the wiring board 5 may be a flexible circuit board or a rigid circuit board (such as a PCB board).
  • the number of elastic pieces 4 is two, and the two elastic pieces 4 are respectively connected to both ends of the vibration component 2.
  • the two ends of the vibration component 2 along the vibration direction are flat first end surfaces. 24.
  • the two connecting arms 41 are connected to the two first end surfaces 24 respectively, for example, by welding or bonding.
  • both ends of the vibration component 2 in the vibration direction are elastically connected to the housing 2 through the elastic pieces 4. Compared with the situation where one end is suspended, the vibration component 2 can perform linear vibration more reliably and is less prone to rolling vibration.
  • the elastic piece 4 is in the shape of a sheet as a whole, and includes a bracket 40 and two connecting arms 41.
  • the bracket 40 includes a partition 402, and the two connecting arms 41 are respectively connected to both sides of the partition 402. side.
  • the connecting arm 41 includes a connecting portion 410 at its outer end and an elastic portion 412 connected between the connecting portion 410 and the partition 402 .
  • the connecting portion 410 is used to connect with the vibration component 2 .
  • the connecting part 410 vibrates synchronously with the vibration component 2, and the elastic part 412 undergoes elastic deformation, thereby providing elastic force to drive the vibration component 2 to reset.
  • the elastic piece 4 includes two connecting parts 410 located on both sides of the partition 402, when the elastic piece 4 is connected to the vibration assembly 2, the two connecting parts 410 are respectively connected to two spaced apart parts of the vibration assembly 2, and the vibration assembly 2.
  • the vibration stability and linearity are better, and during the assembly process, after the vibration component 2 is connected to a single elastic piece 4, it is easier to maintain balance and is less likely to tilt, which is beneficial to subsequent assembly.
  • the elastic part 412 includes at least one folded part 4120 .
  • the folded part 4120 is folded back along the width direction of the elastic piece 4 .
  • Each folded part 4120 includes two strips arranged relatively spaced apart.
  • the two first parts 4121 may be parallel or non-parallel, and the second part 4122 may be strip-shaped or arc-shaped.
  • the elastic part 412 includes three connected folded parts 4120 .
  • the folded portion 4120 is U-shaped, the two first parts 4121 are parallel, and the second part 4122 is semicircular.
  • the width direction of the first part 4021 corresponds to the length direction of the elastic piece 4, so there is more room for adjustment of its width size.
  • the elastic portion 412 is more likely to undergo elastic deformation under external force, allowing the vibration component 2 to vibrate in response to the magnetic force of the coil 5 more sensitively, which is beneficial to improving sensitivity.
  • the deformation amount of the elastic part 412 is larger, which is beneficial to the vibration component 2 to vibrate at a larger amplitude.
  • increasing the width of the folded portion 4120 can achieve greater strength and improve service life and reliability.
  • the above structure facilitates adjusting the width of the folded portion 4120 to achieve a balance between stiffness coefficient and strength.
  • the two connecting arms 41 are arranged symmetrically about the center. As shown in FIGS. 4 and 5 , the two connection points 404 between the two connecting arms 41 and the partition 402 are arranged at intervals along the width direction of the elastic piece 4 , and The two connecting arms 41 are centrally symmetrical. As shown in FIG. 4 , the length direction, width direction and thickness direction of the elastic piece 4 correspond to the X-axis direction, Y-axis direction and Z-axis direction respectively.
  • two elastic pieces 4 are arranged at the upper and lower ends of the vibration component 2 in a centrally symmetrical manner, which can further enhance the vibration stability of the vibration component 2 .
  • connection point 404 between the connecting arm 41 and the partition 402 is offset to one side in the width direction of the spring piece 4 (the upper side in the figure).
  • connection point 404 can also be disposed in the middle of the partition 402 or near the middle.
  • the distance between the connecting portion 410 and the partition 402 is the same, and the force on the vibration component 2 is more symmetrical, which is beneficial to ensuring the stability of its vibration and improving the sound quality.
  • the connecting portion 410 is spaced apart from the partition 402 in the thickness direction of the elastic piece 4 , and the connecting portions 410 of the two connecting arms 41 are located on the same side of the elastic piece 4 . Specifically, the connecting portion 410 protrudes toward the side where the vibration component 2 is located. In this way, there is a gap between the partition 402 and the vibration component 2. When the vibration component 2 vibrates, a vibration space can be provided to prevent the partition 402 from interfering with the vibration of the vibration component 2. .
  • the elastic portion 412 is inclined along the thickness direction of the elastic piece 4, that is, it is inclined toward the side where the vibration component 2 is located, so that the connecting portion 410 and the partition 402 are in the thickness direction. Interval setting in direction. It can be understood that, in addition to the embodiment in which the elastic portion 412 is arranged at an angle, other embodiments in the prior art that can create a gap between the partition 402 and the vibration component 2 can also be applied here.
  • the bracket 40 includes an annular outer ring body 403.
  • the outer ring body 403 is in the shape of a rectangular ring and is located at the periphery of the elastic piece 4. Its length direction and Width direction That is, the length direction and the width direction of the elastic piece 4.
  • the partition 402 is provided in the outer ring body 403 and connected to the outer ring body 403.
  • the partition plate 402 divides the inner hole of the outer ring body 403 into a first region 4030 and a second region 4031 spaced apart along the length direction of the elastic piece 4. , preferably, the two areas are centrally symmetrically arranged.
  • the two connecting arms 41 are respectively provided in the first area 4030 and the second area 4031. Both areas are rectangular, and the length direction is consistent with the length direction of the elastic piece 4.
  • the two connecting arms 41 extend along the length direction of the areas, making full use of the space in each area.
  • the outer ring body 403 is not necessary. As shown in FIG. 10 , the bracket 40 of the spring piece 4 may only include a partition 402 , and is fixedly connected to the shell 1 through the partition 402 . In addition, in other embodiments, the outer ring body 403 may also be in a non-closed ring shape.
  • the two elastic pieces 4 are arranged axially symmetrically or centrally symmetrically at the upper and lower ends of the vibration component 2 .
  • the two ends of the housing 1 are open along the vibration direction of the vibration component 2.
  • the end surface of the open end is called the second end surface 14.
  • the brackets 40 of the two elastic pieces 4 They are respectively connected to the second end surfaces 14 of the two ends, and the connection method may be, for example, adhesive connection or welding.
  • the bracket 40 includes a first surface 400 connected to the second end surface 14 and a second surface 401 arranged relatively parallel to the first surface 400. The labels of the first surface 400 and the second surface 401 are shown in FIG. 9 .
  • the bone conduction vibration-sounding device When the bone conduction vibration-sounding device is installed, it can be connected to external parts through its bracket 40, such as a panel of a wearable device used to contact a person's face, thereby transmitting vibrations to the panel.
  • the connecting arm 41 does not exceed the second surface 401 of the bracket 40.
  • the parts connected to the bracket 40 do not need to be provided with a structure to avoid the connecting arm 41, which can simplify the structure.
  • the connecting arm 41 can be adjusted not to exceed the bracket 40 during the vibration process.
  • the housing 1 has an outer peripheral surface connected between the two second end surfaces 14. As shown in Figure 2, taking the case where the outer shape of the housing 1 is a rectangular parallelepiped as an example, the outer peripheral surface includes two oppositely arranged first side surfaces 15 and There are two opposite second sides 16 , the first side 15 extends along the length direction of the housing 1 , the second side 16 extends along the width direction of the housing 1 , and the height direction of the housing 1 is consistent with the vibration direction.
  • the outer peripheral surface of the housing 1 is provided with a mounting hole 12 for installing the coil 3. In this embodiment, the mounting hole 12 is provided on the first side 15. In other embodiments, it may also be provided on the second side 16.
  • the mounting hole 12 is a blind hole, which is opened on the first side 15, It extends along the direction perpendicular to the first side 15 but is not connected to the first side 15 on the other side.
  • the coil 3 is pushed in from the installation hole 12 to the bottom to complete the installation.
  • the mounting hole 12 is a through hole that penetrates the housing 1 and connects the two first sides 15. In this embodiment, the coil 3 can be connected from Both sides of the housing 1 are push-fitted.
  • the opening of the mounting hole 12 is trumpet-shaped, that is, the opening of the mounting hole 12 gradually increases toward the outside, thereby guiding the coil 3 to be installed into the mounting hole 12, thereby facilitating the assembly of the coil 3.
  • the housing 1 is provided with one or more bosses 13 protruding into the mounting hole 12.
  • the bosses 13 protrude along the vibration direction of the vibration component 2, thereby reducing the size of the mounting hole 12.
  • the distance in the height direction limits the coil 3 in the height direction.
  • the housing 1 may only be provided with the boss 13 opposite to the upper end surface 30 of the coil 3, or may only be provided with the boss 13 opposite to the lower end surface 31 of the coil 3. It may also be provided with multiple bosses 13 at the same time, each with the upper end surface 30 of the coil 3.
  • the upper end surface 30 corresponds to the lower end surface 31 .
  • the position in the height direction of the coil 3 can be more accurately defined, and at the same time, the matching accuracy between the coil 3 and other parts of the mounting hole 12 can be reduced, and the processing cost can be reduced.
  • the coil 3 is in contact with the boss 13 .
  • the coil 3 and the housing 1 are preferably connected by adhesive.
  • Providing the boss 13 is also conducive to forming a gap for accommodating glue between the coil 3 and the surface of the mounting hole 12, making the installation of the coil 3 more secure.
  • the housing 1 includes two groups of bosses located on the upper and lower sides of the coil 3 respectively.
  • Each group of bosses includes four bosses 13.
  • the bosses 13 located above the coil 3 are connected to the upper end of the coil 3.
  • the bosses 13 located below the coil 3 are in contact with the lower end of the coil 3.
  • the four bosses 13 of each boss group are respectively in contact with the two long sides and the two short sides of the coil 3. The limiting effect is better.
  • the boss 13 corresponding to the short side is provided with a transition surface 130 .
  • the transition surface 130 may be inclined or arc-shaped to guide the coil 3 to be installed into the mounting hole 12 .
  • the coil 3 can protrude outward from the receiving cavity 10 of the housing 1, its outer circumference is not completely surrounded by the housing 1. Therefore, the space can be more fully utilized, the compactness of the overall structure can be improved, and it is conducive to bone conduction vibration and sound generation. Miniaturization of the device. In addition, the coil 3 is exposed on the casing 1, and its heat dissipation effect is better.
  • the housing 1 is connected by multiple parts.
  • the housing 1 includes an upper housing 17 and a lower housing 18, which are connected by the upper housing 17 and the lower housing 18. become.
  • the connecting surface 19 of the two housings passes through the mounting hole 12 , so that the mounting hole 12 is at least partially located on one of the housings, and the housing opens from the connecting surface 19 .
  • the housing 1 is formed in one piece, which is a one-piece structure.
  • the vibration component 2 is connected by multiple parts. Specifically, it includes a magnetic conductive plate 20 and two magnets 21 connected at both ends of the magnetic conductive plate 20.
  • the two magnets 21 are arranged opposite to each other with the same poles. For example, the N poles of the two magnets 21 are adjacent, and the S poles are located at both ends of the vibration component 2 .
  • the coil 3 surrounds the outer periphery of the magnetic permeable plate 20, and the magnetic flux lines of the two magnets 21 can pass through the coil 3 more concentratedly, thereby improving the magnetic field utilization and increasing the sensitivity and driving force of the vibration of the vibration component 2.
  • the upper and lower ends of the coil 3 extend beyond the magnetic conductive plate 20 and surround the two magnets 21 to further improve the magnetic field utilization.
  • the vibration component 2 has an integrated structure.
  • the magnetic conductive part 22 is formed on the vibration component 2 by magnetizing the magnetic conductive material and the magnetic conductive parts 22 are respectively located on both sides of the magnetic conductive part 22.
  • the two magnetic parts 23 on the side of the vibration assembly 2 are a single part.
  • the magnetic conductive part 22 and the magnetic part 23 are both part of the vibration assembly 2 rather than a single part.
  • Figure 16 shows the magnetic conductive part 22 and the magnetic part 23 with dotted lines. The demarcation between parts 23.
  • the magnetic conductive part 22 has no magnetism, and the two magnetic parts 23 have magnetism and are oppositely arranged with the same pole.
  • the coil 3 surrounds the outer periphery of the magnetic conductive part 22 . It is also preferred that the upper and lower ends of the coil 3 extend beyond the magnetic conductive part 22 and surround the outside of the two magnetic parts 23 to improve the utilization of the magnetic field.
  • the vibration assembly 2 includes a magnet 21 and a magnetic conductive plate 20.
  • the number of the magnetic conductive plates 20 is at least two, and two adjacent magnetic conductive plates 20 are connected by a magnet 21. , that is, both ends of the magnet 21 are connected with magnetic conductive plates 20 .
  • the magnet 21 is magnetized along the vibration direction, and the magnetic conductive plate 20 and the magnet 21 are arranged along the vibration direction.
  • at least one magnetic conductive plate 20 is surrounded by a coil 3 around its outer periphery.
  • a coil 3 is surrounded on the outer periphery of the two magnetic conductive plates 20, and the current directions in the two adjacent coils 3 are opposite at the same time.
  • the structure of the housing 1 can be adaptively changed, for example, the number and position of the mounting holes 12 can be changed accordingly to accommodate the corresponding coil 3 .
  • the vibration component 2 may be separate or integrated.
  • the present invention also proposes bone conduction glasses, which include the bone conduction vibration sound device described above.
  • the bone conduction glasses also include strip-shaped temples, and the bone conduction vibration sound-generating device is preferably in the shape of a strip and is provided with Place inside the temples. Since the bone conduction vibrating sound-generating device is in a strip shape and adapts to the shape of the temples, it can effectively reduce the cross-sectional area of the temples, making the bone conduction glasses more comfortable to wear.
  • the aspect ratio (ratio of length a and width b) of the bone conduction vibration sound-generating device is 1.2 to 8. More preferably, the aspect ratio is any value between 3 and 5. Further, Preferably, the aspect ratio of the bone conduction vibration sound-generating device is 4. By setting an appropriate aspect ratio, it is helpful to improve the performance of the bone conduction vibration sound-generating device while making full use of space. Obviously, since the length-to-width ratio of the bone conduction vibration sound-generating device is large and the width and thickness are small, the temples can be made thinner and more comfortable, lightweight and beautiful to wear.
  • the present invention also proposes a wearable device, which may be, for example, headphones, glasses, helmets, or other devices suitable for being worn on the head, which includes the above-mentioned bone conduction vibration sound-generating device.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本发明公开了一种骨传导振动发声装置、骨传导眼镜及可穿戴设备，骨传导振动发声装置包括外壳、振动组件、线圈和两个弹片。外壳设有收容腔；振动组件设于所述收容腔内；线圈与所述外壳相对固定且环绕于所述振动组件外周；两个所述弹片分别设置于所述振动组件振动方向的两端，所述弹片包括隔板和两条分别连接在所述隔板两侧的连接臂，所述连接臂包括与所述振动组件相连的连接部以及连接在所述连接部和所述隔板之间的弹性部。本发明在振动组件振动方向的两端均设置弹片与外壳相连，能够使得其两端与外壳弹性连接，在振动组件振动的过程中，其线性度更好，不易发生滚振，从而提高了发声质量、降低了失真，且降低了振动组件与线圈或者其他零部件撞击的风险。

Description

一种骨传导振动发声装置、骨传导眼镜及可穿戴设备
优先权信息：本申请要求于2022年5月19日提交的申请号为202210557598.9的中国专利申请的优先权。
技术领域
本发明涉及骨传导技术领域，尤其涉及一种骨传导振动发声装置、骨传导眼镜及可穿戴设备。
背景技术
骨传导传声是通过骨头引起听觉的传导方式，骨传导耳机、骨传导眼镜等可穿戴设备，通过骨传导振动发声装置产生振动，从而使人听到声音。
骨传导振动发声装置常包括外壳、设于外壳内的振动组件、连接在外壳和振动组件之间的弹片以及驱动振动组件振动的线圈，振动组件具有磁性，其在通电线圈的磁场作用下振动，且可以在弹片的作用下复位。
骨传导耳机的骨传导振动发声装置通常是圆柱形的，目前大部分骨传导眼镜所采用的骨传导振动发声装置通常直接采用与骨传导耳机类似的骨传导振动发声装置，其在骨传导眼镜上设置圆柱形的部分用以安装骨传导振动发声装置，这种结构较为突兀，不利于保持眼镜的原有结构。
申请人研究发现，若能够将骨传导振动发声装置设置成条状的结构，则有利于将其安装至骨传导眼镜的镜腿内，且降低对眼镜原有结构的影响。但是条状的骨传导振动发声装置的弹片宽度小，若直接采用现有技术中的弹片，则容易因为产生弹性变形的弹性部的宽度过小而增加失效风险。
另外，骨传导振动发声装置的振动组件通常仅在其一端设置有弹片与外壳相连，另一端则悬空设置，振动组件在振动的过程中可能会产生左右摆动的滚振现象，该情形在振动组件呈狭长的条状的情况下尤为突出，滚振的出现，使得振动组件在振动过程中容易撞击外部的零部件，产生杂音，不仅影响音质，还容易损坏零部件。
因此，有必要对现有技术予以改良以克服现有技术中的所述缺陷。
发明内容
本发明的目的在于提供一种骨传导振动发声装置、骨传导眼镜及可穿戴设备，能够减少振动组件振动过程中的滚振现象。
为实现上述发明目的，第一方面，本发明提出了一种骨传导振动发声装置，包括：
外壳，设有收容腔；
振动组件，设于所述收容腔内；
线圈，与所述外壳相对固定且环绕于所述振动组件外周；以及，
两个弹片，两个所述弹片分别设置于所述振动组件振动方向的两端，所述弹片包括隔板和两条分别连接在所述隔板两侧的连接臂，所述连接臂包括与所述振动组件相连的连接部以及连接在所述连接部和所述隔板之间的弹性部。
进一步地，所述弹性部包括至少一个折返部，所述折返部包括相对间隔设置的两个条状的第一部分以及连接两个第一部分的端部的第二部分。
进一步地，两条所述连接臂轴对称设置或者中心对称设置，两个所述弹片中心对称或者轴对称设置在所述振动组件两端。
进一步地，所述连接部与所述隔板在所述弹片的厚度方向上间隔设置，且两条所述连接臂的连接部位于所述弹片朝向所述振动组件的一侧。
进一步地，所述弹性部向着所述振动组件倾斜设置。
进一步地，所述弹片包括环状的外环体，所述隔板与所述外环体相连，且将所述外环体的内孔分隔成沿着所述弹片的长度方向间隔设置的第一区域和第二区域，两个所述连接臂分别设于所述第一区域和所述第二区域内。
进一步地，所述第一区域和所述第二区域的长度方向与所述弹片的长度方向一致，两个所述连接臂沿着所述弹片的长度方向设置。
进一步地，所述外壳两端开口，所述外环体连接于所述外壳开口端的端面上。
进一步地，所述支架包括与所述外壳相连的第一表面以及与所述第一表面相对设置的第二表面，所述振动组件振动过程中，所述连接臂不超出所述支架的第二表面。
进一步地，所述振动组件为分体式结构，其包括导磁板以及连接于所述 导磁板两端的两个磁体，两个所述磁体同极相对设置，所述线圈环绕于所述导磁板外周；或者，
所述振动组件为一体式结构，其包括导磁部和分别位于所述导磁部两端的两个磁性部，两个所述磁性部同极相对设置，所述线圈环绕于所述导磁部外周；或者，
所述振子包括磁体以及连接于所述磁体两端的两个导磁板，所述磁体沿着所述振动组件的振动方向充磁，且至少一个所述导磁板的外周环绕有一个所述线圈。
进一步地，所述外壳的外周面开设有用于安装所述线圈的安装孔，所述安装孔为盲孔或者通孔。
进一步地，所述安装孔的开口向着外部逐渐增大。
进一步地，所述外壳设置有凸出至所述安装孔内的一个或多个凸台，所述凸台用于限制所述线圈高度方向的位置。
进一步地，多个所述凸台中，位于所述线圈上方的凸台与所述线圈的上端相抵接，位于所述线圈下方的凸台与所述线圈的下端相抵接。
进一步地，所述外壳一体成型；或者，
所述外壳包括相互连接的上壳体和下壳体，所述上壳体和所述下壳体的连接面经过所述安装孔。
进一步地，所述骨传导振动发声装置的长宽比为1.2～8。
进一步地，所述骨传导振动发声装置呈条状，其长宽比为3～5。
进一步地，所述骨传导振动发声装置的长宽比为4。
第二方面，本发明提出了一种骨传导眼镜，包括如上任一项所述的骨传导振动发声装置。
第三方面，本发明提出了一种可穿戴设备，包括如上任一项所述的骨传导振动发声装置。
与现有技术相比，本发明具有如下有益效果：
本发明中，振动组件振动方向的两端均通过弹片与外壳相连，能够使得其两端与外壳弹性连接，在振动组件振动的过程中，其线性度更好，不易发生滚振，从而提高了发声质量，降低了振动组件与线圈或者其他零部件撞击 的风险，失真更小。进一步地，弹片的两个连接部与振动组件两个相间隔的部分相连，能够提高与振动组件连接的可靠性，使振动组件振动时的线性度和稳定性更好。
附图说明
图1是本发明中一种实施例的骨传导振动发声装置的立体示意图。
图2是图1所示的骨传导振动发声装置的俯视图。
图3是沿图2中A-A剖切线剖得的剖视图。
图4是图1所示的骨传导振动发声装置的弹片的立体示意图。
图5是图4中弹片的俯视图。
图6是图4中弹片的连接部和弹性部的结构示意图。
图7是本发明中一种实施例的弹片的立体示意图。
图8是本发明中一种实施例的弹片的立体示意图。
图9是图4所示的弹片的主视图。
图10是本发明中一种实施例的弹片的平面图。
图11是图1所示的骨传导振动发声装置的外壳的立体示意图。
图12是图11所示的外壳的下壳体的立体示意图。
图13是图11所示的骨传导振动发声装置的外壳的主视图。
图14是本发明中一种实施例的线圈与外壳连接的示意图。
图15是本发明中一种实施例的振动组件与线圈的位置示意图，图中振动组件是分体式的。
图16是本发明中一种实施例的振动组件与线圈的位置示意图，图中振动组件是一体式的。
图17是本发明中一种实施例的振动组件与线圈的位置示意图，图中，线圈的数量为两个。
具体实施方式
为使本申请的上述目的、特征和优点能够更为明显易懂，下面结合附图，对本申请的具体实施方式做详细的说明。可以理解的是，此处所描述的具体实施例仅用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。基于本申 请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
本申请中的术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、***、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
如图1至图3所示，本发明提出了一种骨传导振动发声装置，其包括外壳1、振动组件2、线圈3和弹片4。
骨传导振动发声装置整体呈条状，相应的，其振动组件2、线圈3和弹片4也呈条状，且骨传导振动发声装置、外壳1、振动组件2、线圈3和弹片4的长度方向一致，图1中X轴示意出了长度方向，Y轴和Z轴分别为宽度方向和高度方向。可以理解的是，条状的骨传导振动发声装置更适于安装在条状的空间内，例如对于骨传导眼镜而言，条状的骨传导振动发声装置更适于安装至条状的镜腿内，且对镜腿的形状影响小。
外壳1为振动组件2、线圈3和弹片4的安装载体，其设有收容腔10。外壳1例如可以采用塑胶、铝或者不锈钢等材料制成。
振动组件2设于收容腔10内，在骨传导振动发声装置工作时，振动组件2能够沿着振动方向(即Z轴方向)振动。作为一种优选的实施方式，外壳1沿着振动方向的两端开口，开口的面积大于振动组件2的截面积，振动组件2能够从开口装入收容腔10内，装配更为方便。
线圈3与外壳1相对固定且环绕于振动组件2外周，其能够通电产生变化的磁场，进而使得振动组件2在与磁场的相互作用下产生振动，即线圈3用于驱动振动组件2振动。如图2和图3所示，在外壳1外部设置有与所述线圈3电连接 的的接线板5，接线板5与外部的控制电路相连，线圈3在外部控制电路的控制下驱动振动组件2振动。接线板5可以是柔性线路板或者硬质电路板(例如PCB板)。
如图3所示，弹片4的数量为两个，两个弹片4分别连接于振动组件2的两端，在一些实施例中，振动组件2沿着振动方向的两端为平整的第一端面24，两个连接臂41分别与两个第一端面24相连，例如可以通过焊接或者粘接等方式相连。
可以理解的是，振动组件2振动方向的两端均通过弹片4与外壳2弹性连接，相对于一端悬空的情形，振动组件2能够更可靠的进行线性振动，不易发生滚振现象。
进一步地，如图4和图5所示，弹片4整体呈片状，其包括支架40和两条连接臂41，支架40包括隔板402，两条连接臂41分别连接在隔板402的两侧。连接臂41包括位于其外端的连接部410以及连接在连接部410和隔板402之间的弹性部412，连接部410用于与振动组件2相连。在振动组件2振动时，连接部410随振动组件2同步振动，弹性部412发生弹性变形，从而提供驱动振动组件2复位的弹力。
由于弹片4包括两个位于隔板402两侧的连接部410，因此，当弹片4与振动组件2相连时，两个连接部410分别与振动组件2的两个间隔开的部分相连，振动组件2振动的稳定性和线性度更好，且在组装过程中，振动组件2与单个弹片4相连后，更容易保持平衡，不易发生倾斜，有利于后续装配。
在一些实施例中，如图6所示，弹性部412包括至少一个折返部4120，折返部4120沿着弹片4的宽度方向折返，每一个折返部4120均包括相对间隔设置的两个条状的第一部分4121以及连接两个第一部分4121的端部的第二部分4122。两个第一部分4121可以是平行的也可以是不平行的，第二部分4122可以是条状的或者弧形的。图6示出的实施例中，弹性部412包括三个相连的折返部4120。
作为一种优选的实施方式，折返部4120呈U形，两个第一部分4121相平行，且第二部分4122呈半圆环形。
多重折返使得弹性部412整体长度更长，因此有利于减小弹性部412的劲 度系数，提高低频效果。第一部分4021的宽度方向对应弹片4的长度方向，因此其宽度尺寸的调整空间更大。一般的，当折返部4120的宽度B较小时，弹性部412在外力下更容易发生弹性变形，使振动组件2更为灵敏的响应线圈5的磁力进行振动，有利于提高灵敏度。进一步地，弹性部412的变形量更大，有利于振动组件2进行更大幅度的振动。另外，增加折返部4120的宽度能够取得更大的强度，提高使用寿命和可靠性。上述结构便于调整折返部4120的宽度以在劲度系数和强度之间取得平衡。
在一些实施例中，两条连接臂41中心对称设置，如图4和图5所示，两条连接臂41与隔板402的两个连接处404沿着弹片4的宽度方向间隔设置，且两条连接臂41中心对称。如图4所示，弹片4的长度方向、宽度方向和厚度方向分别对应的是X轴方向、Y轴方向和Z轴方向。优选的，两个弹片4以中心对称的方式设置在振动组件2的上下两端，可以进一步增强振动组件2振动的稳定性。在另一些实施例中，如图7和图8所示，两条连接臂41以对称轴4a轴对称设置。图7示出的实施方式中，连接臂41与隔板402的连接处404偏置于弹片4宽度方向的一侧(图中的上侧)，在其他实施方式中，参考图8，连接处404也可以设置在隔板402的中部或者靠近中部的位置。
由于两条连接臂41对称设置，因此，其连接部410距离隔板402的距离相同，振动组件2的受力更为对称，有利于保证其振动的稳定性，提高发声质量。
如图3和图9所示，连接部410被设置成与隔板402在弹片4的厚度方向上间隔设置，且两个连接臂41的连接部410位于弹片4的同一侧。具体而言，连接部410凸向振动组件2所在侧，这样，隔板402和振动组件2之间存在间隔，当振动组件2振动时，能够提供振动空间，防止隔板402干涉振动组件2振动。
继续参考图3和图9，作为一种优选的实施方式，弹性部412沿着弹片4的厚度方向倾斜设置，即其向着振动组件2所在侧倾斜，以使得连接部410和隔板402在厚度方向上间隔设置。可以理解的是，除了弹性部412倾斜设置的实施方式外，现有技术中其他可以使隔板402和振动组件2产生间隔的实施方式也可以应用于此。
在一些实施例中，支架40包括环状的外环体403，图4和图5示出的实施例中，外环体403呈矩形的环状，且位于弹片4的***，其长度方向和宽度方向 即为弹片4的长度方向和宽度方向。隔板402设于外环体403内且与外环体403相连，隔板402将外环体403的内孔分隔成沿着弹片4的长度方向间隔设置的第一区域4030和第二区域4031，优选的，两个区域是中心对称设置的。两个连接臂41分别设于第一区域4030和第二区域4031内。两个区域都呈长方形，且长度方向与弹片4的长度方向一致，两个连接臂41沿着区域的长度方向延伸，对各区域的空间利用更为充分。
可以理解的是，外环体403不是必须的，如图10所示，弹片4的支架40可以只包括隔板402，通过隔板402与外壳1固定连接。另外，在其他实施例中，外环体403还可以是非封闭的环状。
作为一种优选的实施方式，两个弹片4轴对称设置或者中心对称设置在振动组件2的上下端。
作为一种优选的实施方式，参考图3，外壳1沿着振动组件2振动方向的两端开口，为叙述方便起见，其开口端的端面被称为第二端面14，两个弹片4的支架40分别连接在两个端部的第二端面14上，连接方式例如可以是胶粘连接或者焊接。支架40包括与第二端面14相连的第一表面400以及与第一表面400相对平行设置的第二表面401，第一表面400和第二表面401的标号见图9。在骨传导振动发声装置安装时，可以通过其支架40与外部的零件相连，例如与可穿戴设备用于与人脸部接触的面板相连，从而将振动传递至面板。优选的，振动组件2在振动过程中，连接臂41不超出支架40的第二表面401，这样，与支架40相连的零件无需设置避让连接臂41的结构，能够简化结构。显然的，在弹性部412倾斜设置的实施例中，通过控制支架40与位于原位的振动组件2之间的距离，即可将连接臂41调整成在振动过程中不超出支架40。
外壳1具有连接在两个第二端面14之间的外周面，如图2所示，以外壳1的外形呈长方体状的情形为例，其外周面包括相对设置的两个第一侧面15和相对设置的两个第二侧面16，其中第一侧面15沿着外壳1的长度方向延伸，第二侧面16沿着外壳1的宽度方向延伸，外壳1的高度方向与振动方向一致。外壳1的外周面开设有用于安装线圈3的安装孔12，本实施例中，安装孔12开设于第一侧面15上，在其他实施例中，其也可以开设在第二侧面16上。
在一种优选的实施方式中，安装孔12是盲孔，其开设于第一侧面15上， 沿着与第一侧面15垂直的方向延伸，但是不连通另一侧的第一侧面15，在该种实施方式中，线圈3从安装孔12内推入到底即可完成安装。在另一种优选的实施方式中，如图11和图14所示，安装孔12为通孔，其贯穿外壳1，连通两个第一侧面15，在该种实施方式中，线圈3可以从外壳1的两侧推入安装。
为了便于线圈3的推入，安装孔12的开口呈喇叭状，即安装孔12的开口向着外部逐渐增大，从而能够引导线圈3装入安装孔12内，便于线圈3的装配。
进一步地，参考图12至图14，外壳1设置有凸出至安装孔12内的一个或多个凸台13，凸台13沿着振动组件2的振动方向凸出，从而减小安装孔12高度方向的距离，对线圈3在高度方向进行限位。外壳1可以仅设置与线圈3上端面30相对设置的凸台13，也可以仅设置与线圈3下端面31相对设置的凸台13，还可以同时设置多个凸台13，分别与线圈3的上端面30和下端面31相对应。通过设置凸台13，可以更为精确的限定线圈3高度方向的位置，同时降低线圈3与安装孔12其他部分之间的配合精度，降低加工成本。优选的，线圈3与凸台13相抵接。线圈3与外壳1之间优选通过胶粘连接，设置凸台13还有利于线圈3和安装孔12的孔表面之间形成容纳胶水的间隙，使得线圈3的安装更为牢固。
作为一种优选的实施方式，外壳1包括两组分别位于线圈3上下侧的凸台组，每组凸台组均包括4个凸台13，位于线圈3上方的凸台13与线圈3的上端相抵接，位于线圈3下方的凸台13与线圈3的下端相抵接，每组凸台组的四个凸台13分别对应抵接在线圈3的两个长边侧和两个短边侧，限位效果更好。如图12和图14所示，与短边侧对应的凸台13设置有过渡面130，过渡面130可以是倾斜的或者是弧形的，以引导线圈3装入安装孔12内。
可以理解的是，由于线圈3能够外凸于外壳1的收容腔10，其外周不完全由外壳1包围住，因此，能够更充分的利用空间，提高整体结构的紧凑程度，利于骨传导振动发声装置的小型化。另外，线圈3外露于外壳1，其散热效果更佳。
在一些实施例中，外壳1通过多个部分连接而成，图11所示的实施例中，外壳1包括上壳体17和下壳体18，通过上壳体17和下壳体18连接而成。两个壳体的连接面19经过安装孔12，以使得安装孔12至少部分位于其中的一个壳体上，且该壳体自连接面19处开口。这样，在安装线圈3时，可以先将线圈3组 装在上壳体17或者下壳体18的开口内，之后，将另一壳体与该壳体焊接成为外壳1，实现线圈3在外壳1内的组装，可以简化组装流程，方便装配，当然，也可以先将上壳体17和下壳体18连接成外壳1，之后侧向装入线圈3，两种装配方式可以视实际情况选用。优选的，上壳体17和下壳体18以连接面19对称。在另一些实施例中，外壳1是一体成型的，其为一体式的结构。
在一种优选的实施方式中，如图15所示，振动组件2由多个零件连接而成，具体而言，其包括导磁板20以及连接在导磁板20两端的两个磁体21，两个磁体21同极相对设置，例如两个磁体21的N极相邻，S极则位于振动组件2的两个端部。线圈3环绕在导磁板20外周，两个磁体21的磁感线能够更为集中的穿过线圈3，从而提高磁场利用率，增加振动组件2振动的灵敏度和驱动力。优选的，线圈3的上下端超出至导磁板20外部，环绕于两个磁体21的外部，以进一步提高磁场利用率。
在一种优选的实施方式中，参考图16，振动组件2为一体式的结构，其通过对导磁材料充磁的方式在振动组件2上形成导磁部22和分别位于导磁部22两侧的两个磁性部23，振动组件2为单个的零件，导磁部22和磁性部23均为振动组件2的一部分而不是单个的零件，图16以虚线示出了导磁部22和磁性部23之间的分界。导磁部22没有磁性，两个磁性部23具有磁性，且同极相对设置，线圈3环绕于导磁部22外周。同样优选的，线圈3的上下端超出至导磁部22外部，环绕于两个磁性部23的外部，以提高磁场利用率。
在一种优选的实施方式中，参考图17，振动组件2包括磁体21和导磁板20，导磁板20的数量至少为两个，相邻两个导磁板20之间通过磁体21连接，即磁体21的两端均连接有导磁板20。磁体21沿着振动方向充磁，导磁板20和磁体21沿着振动方向排列。在该实施方式中，至少一个导磁板20的外周环绕有一个线圈3。优选的，两个导磁板20外周均环绕有一个线圈3，且同一时刻相邻两个线圈3内的电流方向相反。可以理解的是，外壳1的结构可以适应性的更改，例如，安装孔12的数量和位置可以相应的变化，以装入对应的线圈3。另外，本实施方式中振动组件2可以是分体式的也可以是一体式的。
本发明还提出了一种骨传导眼镜，其包括上文所述的骨传导振动发声装置。骨传导眼镜还包括条状的镜腿，骨传导振动发声装置优选呈条状，且设 置于镜腿内。由于骨传导振动发声装置呈条状，与镜腿的形状相适应，因此，能够有效地减小镜腿的截面积，使得骨传导眼镜的佩戴更为舒适。
作为一种优选的实施方式，骨传导振动发声装置的长宽比(长度a和宽度b的比值)为1.2～8，进一步优选的，长宽比为3～5之间的任意值，更进一步优选的，骨传导振动发声装置的长宽比为4。通过设置合适的长宽比，有利于在充分利用空间的情况下提高骨传导振动发声装置的性能。显然的，由于骨传导振动发声装置的长宽比较大，宽度和厚度较小，因此，镜腿能够做的更细，佩戴更为舒适、轻便和美观。
本发明还提出了一种可穿戴设备，该可穿戴设备例如可以是耳机、眼镜、头盔等适于佩戴在头部的设备，其包括上文所述的骨传导振动发声装置。
上述仅为本发明的具体实施方式，其它基于本发明构思的前提下做出的任何改进都视为本发明的保护范围。

Claims (20)

  1. 一种骨传导振动发声装置，其特征在于，包括：
    外壳(1)，设有收容腔(10)；
    振动组件(2)，设于所述收容腔(10)内；
    线圈(3)，与所述外壳(1)相对固定且环绕于所述振动组件(2)外周；以及，
    两个弹片(4)，两个所述弹片(4)分别设置于所述振动组件(2)振动方向的两端，所述弹片(4)包括隔板(402)和两条分别连接在所述隔板(402)两侧的连接臂(41)，所述连接臂(41)包括与所述振动组件(2)相连的连接部(410)以及连接在所述连接部(410)和所述隔板(402)之间的弹性部(412)。
  2. 如权利要求1所述的骨传导振动发声装置，其特征在于，所述弹性部(412)包括至少一个折返部(4120)，所述折返部(4120)包括相对间隔设置的两个条状的第一部分(4121)以及连接两个第一部分(4121)的端部的第二部分(4122)。
  3. 如权利要求1所述的骨传导振动发声装置，其特征在于，两条所述连接臂(41)轴对称设置或者中心对称设置，两个所述弹片(4)中心对称或者轴对称设置在所述振动组件(2)两端。
  4. 如权利要求1所述的骨传导振动发声装置，其特征在于，所述连接部(410)与所述隔板(402)在所述弹片(4)的厚度方向上间隔设置，且两条所述连接臂(41)的连接部(410)位于所述弹片(4)朝向所述振动组件(2)的一侧。
  5. 如权利要求4所述的骨传导振动发声装置，其特征在于，所述弹性部(412)向着所述振动组件(2)倾斜设置。
  6. 如权利要求1所述的骨传导振动发声装置，其特征在于，所述弹片(4)包括环状的外环体(403)，所述隔板(402)与所述外环体(403)相连，且将所述外环体(403)的内孔分隔成沿着所述弹片(4)的长度方向间隔设置的第一区域(4030)和第二区域(4031)，两个所述连接臂(41)分别设于所 述第一区域(4030)和所述第二区域(4031)内。
  7. 如权利要求6所述的骨传导振动发声装置，其特征在于，所述第一区域(4030)和所述第二区域(4031)的长度方向与所述弹片(4)的长度方向一致，两个所述连接臂(41)沿着所述弹片(4)的长度方向设置。
  8. 如权利要求6所述的骨传导振动发声装置，其特征在于，所述外壳(1)两端开口，所述外环体(403)连接于所述外壳(1)开口端的端面上。
  9. 如权利要求8所述的骨传导振动发声装置，其特征在于，所述支架(40)包括与所述外壳(1)相连的第一表面(400)以及与所述第一表面(400)相对设置的第二表面(401)，所述振动组件(2)振动过程中，所述连接臂(41)不超出所述支架(40)的第二表面(401)。
  10. 如权利要求1所述的骨传导振动发声装置，其特征在于，所述振动组件(2)为分体式结构，其包括导磁板(20)以及连接于所述导磁板(20)两端的两个磁体(21)，两个所述磁体(21)同极相对设置，所述线圈(3)环绕于所述导磁板(20)外周；或者，
    所述振动组件(2)为一体式结构，其包括导磁部(22)和分别位于所述导磁部(22)两端的两个磁性部(23)，两个所述磁性部(23)同极相对设置，所述线圈(3)环绕于所述导磁部(22)外周；或者，
    所述振子(2)包括磁体(21)以及连接于所述磁体(21)两端的两个导磁板(20)，所述磁体(21)沿着所述振动组件(2)的振动方向充磁，且至少一个所述导磁板(20)的外周环绕有一个所述线圈(3)。
  11. 如权利要求1至10任一项所述的骨传导振动发声装置，其特征在于，所述外壳(1)的外周面开设有用于安装所述线圈(3)的安装孔(12)，所述安装孔(12)为盲孔或者通孔。
  12. 如权利要求11所述的骨传导振动发声装置，其特征在于，所述安装孔(12)的开口向着外部逐渐增大。
  13. 如权利要求11所述的骨传导振动发声装置，其特征在于，所述外壳(1)设置有凸出至所述安装孔(12)内的一个或多个凸台(13)，所述凸台(13)用于限制所述线圈(3)高度方向的位置。
  14. 如权利要求13所述的骨传导振动发声装置，其特征在于，多个所述凸 台(13)中，位于所述线圈(3)上方的凸台(13)与所述线圈(3)的上端相抵接，位于所述线圈(3)下方的凸台(13)与所述线圈(3)的下端相抵接。
  15. 如权利要求11所述的骨传导振动发声装置，其特征在于，所述外壳(1)一体成型；或者，
    所述外壳(1)包括相互连接的上壳体(17)和下壳体(18)，所述上壳体(17)和所述下壳体(18)的连接面(19)经过所述安装孔(12)。
  16. 如权利要求1至10任一项所述的骨传导振动发声装置，其特征在于，所述骨传导振动发声装置的长宽比为1.2～8。
  17. 如权利要求16所述的骨传导振动发声装置，其特征在于，所述骨传导振动发声装置呈条状，其长宽比为3～5。
  18. 如权利要求17所述的骨传导振动发声装置，其特征在于，所述骨传导振动发声装置的长宽比为4。
  19. 一种骨传导眼镜，其特征在于，包括如权利要求1至18任一项所述的骨传导振动发声装置。
  20. 一种可穿戴设备，其特征在于，包括如权利要求1至18任一项所述的骨传导振动发声装置。
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JP2020150542A (ja) * 2019-03-12 2020-09-17 イーエム−テック・カンパニー・リミテッドＥＭ−ＴＥＣＨ．Ｃｏ．，Ｌｔｄ． 骨伝導スピーカー

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