WO2020156013A1 - 振动式骨传导扬声器 - Google Patents

振动式骨传导扬声器 Download PDF

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WO2020156013A1
WO2020156013A1 PCT/CN2019/130727 CN2019130727W WO2020156013A1 WO 2020156013 A1 WO2020156013 A1 WO 2020156013A1 CN 2019130727 W CN2019130727 W CN 2019130727W WO 2020156013 A1 WO2020156013 A1 WO 2020156013A1
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shaped
ring
voice coil
bone conduction
groove
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PCT/CN2019/130727
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French (fr)
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朱达云
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朱达云
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Publication of WO2020156013A1 publication Critical patent/WO2020156013A1/zh

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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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the technical field of loudspeakers, in particular to a vibration type bone conduction loudspeaker.
  • Air vibration conduction uses air vibration to transmit sound to the eardrum, and then to the inner ear nerve through the eardrum.
  • Bone conduction is the conversion of sound into mechanical vibrations of different frequencies, and the transmission of sound waves through the human skull, bone labyrinth, inner ear lymphatic fluid transmission, spiral organs, auditory nerve, and auditory center. Headphones that use air conduction usually need to be inserted into the ear holes. Except for the sound played by the headphones, other sounds are difficult to pass into the ears. When people are in extraordinary circumstances, such as crossing the road, they cannot hear the whistle of a car.
  • the use of air-conducted earphones will have electromagnetic waves, which can cause damage to human brain and hearing nerves. If such earphones are used at high volume for a long time, it will affect the eardrum of people and cause people’s tinnitus. Earth will cause hearing loss.
  • the use of bone conduction earphones is placed near the ears, eliminating many steps of sound wave transmission, can achieve clear sound reproduction in a noisy environment, and sound waves will not be affected by diffusion in the air others.
  • bone conduction headphones are more and more widely used.
  • Chinese patent document CN201820027238.7 discloses a magnetic circuit component of a bone conduction speaker.
  • the magnetic component generates a first full magnetic field
  • the magnetic circuit component includes a first magnetic element, a first magnetic element, and a second magnetic element.
  • the first magnetic element generates a second magnetic field.
  • the second magnetic element surrounds the first magnetic element and forms a magnetic gap with the first magnetic element.
  • the magnetic circuit assembly further includes at least one second magnetic element.
  • the at least one second magnetic element is placed under the magnetic gap, and the magnetic field strength of the first full magnetic field in the magnetic gap is greater than the magnetic field strength of the second magnetic field in the magnetic gap.
  • the present utility model provides a vibrating bone conduction speaker, which can increase the vibration amplitude and the mechanical efficiency of bone conduction by cleverly arranging ring-shaped shrapnel, elastic wave and ring-shaped bracket design.
  • a vibrating bone conduction speaker comprising a U iron and a magnet
  • the center of the U iron forms a groove with a U-shaped cross section
  • the magnet is accommodated in the groove and is
  • a magnetic gap is formed between the U irons
  • the top of the magnet is provided with a washer
  • the top surface of the groove is equipped with an annular elastic piece
  • the periphery of the annular elastic piece is fixed to the bottom of an annular bracket
  • the top of the annular bracket is assembled
  • An elastic wave the inner wall of the elastic wave is welded with a voice coil
  • the top of the voice coil is provided with a conductive sheet
  • the bottom of the voice coil extends into the magnetic gap.
  • the elastic wave is manganese sheet, stainless steel sheet, plastic material, fiber material or chemical material.
  • the periphery of the top surface of the groove protrudes outwardly from a ring-shaped ear, and the ring-shaped elastic sheet is mounted on the ring-shaped ear.
  • the elastic wave is a conductive plane elastic wave
  • the conductive plane elastic wave is a composite metal material and can conduct electricity.
  • the washer is a metal material with good magnetic permeability.
  • the bracket is made of non-magnetic plastic.
  • the vibrating bone conduction loudspeaker of the utility model adopts a non-fixed magnetic circuit.
  • the annular shrapnel and the elastic wave are assembled on the voice coil, when the annular shrapnel and the elastic wave vibrate, the voice coil
  • the electromotive force affects the non-fixed magnetic circuit to produce a stronger bass effect.
  • the annular shrapnel and elastic wave to support the annular bracket and voice coil, the diameter and thickness of the product are compressed, the vibration amplitude is increased, the power consumption is reduced, and the mechanical efficiency of bone conduction is improved.
  • Fig. 1 is a schematic diagram of the structure of the vibrating bone conduction speaker of the utility model.
  • Figure 2 is a schematic diagram of the structure of the vibrating bone conduction speaker of the present invention.
  • the vibrating bone conduction speaker includes a U iron 1, a magnet 2, a washer 3, a ring bracket 4, a ring shrapnel 5, an elastic wave 6, a voice coil 7 and a conductive sheet 8.
  • the center of the U iron 1 forms a groove 11 with a U-shaped cross section.
  • the magnet 2 is accommodated in the groove 11 and forms a magnetic gap 12 with the U iron 1.
  • the top of the magnet 2 is provided with the washer 3, the top surface of the groove 11 is equipped with the annular elastic piece 5, the periphery of the annular elastic piece 5 is fixed to the bottom of the annular bracket 4, the annular bracket 4
  • the elastic wave 6 is assembled on the top of the elastic wave 6, the inner wall of the elastic wave 6 is welded with the voice coil 7, the top of the voice coil 7 is provided with a conductive sheet 8, and the bottom of the voice coil 7 extends into the magnetic gap 12.
  • the conductive sheet 8 transmits vibration to the voice coil 7, the vibration is amplified by the ring-shaped shrapnel 5 and the elastic wave 6, thereby increasing the vibration amplitude of the voice coil 7, reducing power consumption, and improving the bone conduction mechanism effectiveness.
  • the periphery of the top surface of the groove 11 protrudes outwardly from an annular ear 13, and the annular elastic sheet 5 is mounted on the annular ear 13.
  • the elastic wave 6 is a conductive plane elastic wave
  • the conductive plane elastic wave is a composite metal material and can conduct electricity.
  • the specific structure of the conductive plane elastic wave refer to Chinese Patent Document CN201721193063.9. I won't repeat them here.
  • the base material of the elastic wave 6 may be manganese sheet, stainless steel sheet, plastic material, chemical material, fiber material or other metal material. It is preferably a manganese sheet, which has a high elastic limit and yield ratio, has excellent elastic properties, can absorb a large amount of elastic energy without plastic deformation; also has a high fatigue limit, sufficient plasticity and Toughness to prevent impact fracture.
  • the washer 3 is preferably a metal material with good magnetic permeability, and the sound quality can be effectively improved by setting the washer as a metal material with good magnetic permeability.
  • the U iron 1 is a magnetic metal material, and the magnetic field strength of the magnetic gap is improved by setting the U iron as a magnetic metal material.
  • Both the washer 3 and the U iron 1 in this application use metal materials with higher magnetic permeability, such as permalloy, electrical passivated iron, silicon steel sheet, and low carbon steel, and low carbon steel is commonly used.
  • the vibrating bone conduction loudspeaker of the present invention adopts a non-fixed magnetic circuit.
  • the ring-shaped shrapnel 5 and the elastic wave 6 vibrate, and the non-fixed magnetic circuit can produce a stronger bass effect under the influence of the electromotive force of the voice coil.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本实用新型提供了振动式骨传导扬声器，包括U铁和磁铁，其特征在于，所述U铁中心形成横截面呈U形的凹槽，所述磁铁容置于所述凹槽，并与所述U铁之间形成磁隙；所述磁铁顶部设有华司；所述凹槽的槽顶面装配有一环形弹片，该环形弹片周边固接一环形支架的底部；该环形支架的顶部装配一弹波，所述弹波的内壁装配有音圈，该音圈的顶部设置有一传导片，该音圈的底部伸入所述磁隙。所述振动式骨传导扬声器采用非固定式磁路，环形弹片设置在U铁上，弹波连接在音圈上，振动时，受音圈电动势影响非固定式磁路可以产生更强的低音效果，并通过巧妙的结构设计，压缩产品直径和厚度，增大振动幅度，增大承受功率，增强产品使用寿命，优化生产工艺。

Description

振动式骨传导扬声器 技术领域
本实用新型涉及扬声器技术领域，具体地，涉及振动式骨传导扬声器。
背景技术
声音传导的方式有空气振动和骨传导。空气振动传导利用空气振动将声音传到耳膜，再通过耳膜传到内部耳神经。骨传导是将声音转化为不同频率的机械振动，通过人的颅骨、骨迷路、内耳淋巴液传递、螺旋器、听神经、听觉中枢来传递声波。利用空气传导的耳机通常需要塞入耳朵孔中，除了耳机播放的声音，其他声音难以传入耳朵，当人们处于非常情况下，例如：过马路时，就听不到汽车的鸣笛声，容易造成危险事故；其次，利用空气传导的耳机会有电磁波，对人的脑神经与听力神经造成伤害，如果长期大音量地使用这种耳机，对人的耳膜有影响，会引起人的耳鸣，严重地会造成听力下降。与空气传导相比，利用骨传导的耳机贴在耳朵附近，省去了许多声波传递的步骤，能在嘈杂的环境中实现清晰的声音还原，而且声波也不会因为在空气中扩散而影响到他人。现如今骨传导耳机的使用越来越广泛。
然而，相对于气传导扬声器通过振膜带动空气振动产生声音，骨传导振动扬声器需要带动使用者的软组织及骨头进行振动，因而其所需要的机械功率较高。为了提高骨传导扬声器的机械功率。中国专利文献CN201820027238.7公开了一种骨传导扬声器的磁路组件。所述磁性组件产生第一全磁场，所述磁路组件包括第一磁性元件、第一导磁元件和第二导磁元件。所述第一磁性元件产生第二磁场。所述第二导磁元件环绕所述第一磁性元件，并与所述第一磁性元件之间形成磁间隙。所述磁路组件还包括至少一个第二磁性元件。所述至少一个第二磁性元件置于所述磁间隙的下方，所述第一全磁场在所述磁间隙内的磁场 强度大于所述第二磁场在所述磁间隙内的磁场强度。该专利文献通过增加磁性元件来增加磁场强度提高骨传导扬声器的机械功率。
然而，由于增加磁性元件必然会增加扬声器的整体重量和体积，并不能实质上增加整个扬声器的灵敏度和缩小产品体积，且生产工艺复杂，不良率高，产品使用寿命不可靠。
实用新型内容
为了克服现有技术的不足，本实用新型提供了一种振动式骨传导扬声器，通过巧妙地设置环形弹片，弹波和环形支架设计，增大振动幅度和骨传导的机械效率。
本实用新型的技术方案如下：一种振动式骨传导扬声器，包括U铁和磁铁，所述U铁中心形成横截面呈U形的凹槽，所述磁铁容置于所述凹槽，并与所述U铁之间形成磁隙；所述磁铁顶部设有华司，所述凹槽的槽顶面装配一环形弹片，该环形弹片周边固接一环形支架的底部，该环形支架的顶部装配一弹波，所述弹波的内壁焊接有音圈，该音圈的顶部设置有传导片，该音圈的底部伸入所述磁隙。
所述弹波为锰片，不锈钢片，塑料材料，纤维材质或化学材料。
所述凹槽的槽顶面周边向外凸伸出环形耳部，该环形耳部上装配所述环形弹片。
所述弹波为导电平面弹波，该导电平面弹波为复合金属材料，能够导电。
所述华司是导磁性良好的金属材质。
所述支架为不导磁塑料。
本实用新型的有益效果为：本实用新型所述的振动式骨传导扬声器采用非固定式磁路，当环形弹片和弹波装配在音圈上，当环形弹片和弹波振动时，受音圈电动势影响非固定式磁路可以产生更强的低音效果。而且，通过设置环形 弹片和弹波支撑环形支架和音圈，压缩产品直径和厚度，增大振动幅度，降低功耗，提高骨传导的机械效率。
附图说明：
图1为本实用新型所述振动式骨传导扬声器的结构示意图。
图2为本实用新型所述振动式骨传导扬声器的结构示意图。
具体实施方式
为了使本实用新型的实用新型目的，技术方案及技术效果更加清楚明白，下面结合具体实施方式对本实用新型做进一步的说明。应理解，此处所描述的具体实施例，仅用于解释本实用新型，并不用于限定本实用新型。
参照图1和图2，振动式骨传导扬声器，包括U铁1，磁铁2，华司3，环形支架4，环形弹片5，弹波6，音圈7和传导片8。所述U铁1中心形成横截面呈U形的凹槽11，所述磁铁2容置于所述凹槽11，并与所述U铁1之间形成磁隙12。所述磁铁2顶部设有所述华司3，所述凹槽11的槽顶面上装配有所述环形弹片5，该环形弹片5周边固接所述环形支架4的底部，该环形支架4的顶部装配所述弹波6，所述弹波6的内壁焊接有所述音圈7，该音圈7的顶部设置有传导片8，该音圈7的底部伸入所述磁隙12。本振动式骨传导扬声器，传导片8将振动传递至音圈7时，通过环形弹片5和弹波6将振动放大，从而加大音圈7的振动幅度，降低功耗，提高骨传导的机械效率。
较佳地，参照图2，所述凹槽11的槽顶面周边向外凸伸出环形耳部13，该环形耳部13上装配所述环形弹片5。
所述弹波6为导电平面弹波，该导电平面弹波为复合金属材料，能够导电。所述导电平面弹波具体结构参照中国专利文献CN201721193063.9。在此不再赘述。
所述弹波6的基材可以是锰片，不锈钢片，塑料材质，化学材料，纤维材质或其他金属材质。优选为锰片，所述锰片具有较高的弹性极限和屈强比，具有优良的弹性性能，能吸收大量的弹性能而不产生塑性变形；还具有较高的疲劳极限，足够的塑性和韧性，以防止冲击断裂。
所述华司3优选是导磁性良好的金属材质，通过将所述华司设置为导磁良好的金属材质可以有效的提高音质。
所述U铁1为导磁金属材料，通过将所述U铁设置为导磁金属材料提高磁隙的磁场强度。
本申请中所述华司3和所述U铁1都是用导磁率较高的金属材料，如坡莫合金、电工钝铁、硅钢片、低碳钢，常用的是低碳钢。
本实用新型所述的振动式骨传导扬声器采用非固定式磁路，所述环形弹片5和所述弹波6振动，受音圈电动势影响非固定式磁路可以产生更强的低音效果。
以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明，不能认定本实用新型的具体实施只局限于这些说明。对于本实用新型所属技术领域的普通技术人员来说，在不脱离本实用新型构思的前提下，其架构形式能够灵活多变，可以派生系列产品。只是做出若干简单推演或替换，都应当视为属于本实用新型由所提交的权利要求书确定的专利保护范围。

Claims (5)

  1. 振动式骨传导扬声器，包括U铁和磁铁，其特征在于，所述U铁中心形成横截面呈U形的凹槽，所述磁铁容置于所述凹槽，并与所述U铁之间形成磁隙；所述磁铁顶部设有华司；所述凹槽的槽顶面装配有一环形弹片，该环形弹片周边固接一环形支架的底部；该环形支架的顶部装配一弹波，所述弹波的内壁装配有音圈，该音圈的顶部设置有一传导片，该音圈的底部伸入所述磁隙。
  2. 根据权利要求1所述的振动式骨传导扬声器，其特征在于，所述弹波为锰片，不锈钢片，塑料材料，纤维材质或化学材料。
  3. 根据权利要求1所述的振动式骨传导扬声器，其特征在于，所述凹槽的槽顶面周边向外凸伸出环形耳部，该环形耳部上装配所述环形弹片。
  4. 根据权利要求1所述的振动式骨传导扬声器，其特征在于，所述弹波为导电平面弹波，该导电平面弹波为复合金属材料，能够导电。
  5. 根据权利要求1所述的振动式骨传导扬声器，其特征在于，所述环形弹片为锰片，不锈钢片，塑料材料，纤维材质或化学材料。
PCT/CN2019/130727 2019-01-28 2019-12-31 振动式骨传导扬声器 WO2020156013A1 (zh)

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CN209330392U (zh) * 2019-01-28 2019-08-30 朱达云 振动式骨传导扬声器
CN114071334A (zh) * 2021-11-30 2022-02-18 深圳市明悦达电声科技有限公司 一种复合式扬声器及发声装置

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CN205693839U (zh) * 2016-01-08 2016-11-16 费艳锋 一种新型骨导扬声器及骨导耳机
CN206481453U (zh) * 2017-01-09 2017-09-08 东莞市赞歌声学科技有限公司 一种音圈内带有支撑式弹波的超薄扬声器
CN207692048U (zh) * 2018-01-08 2018-08-03 深圳市韶音科技有限公司 一种骨传导扬声器
CN209330392U (zh) * 2019-01-28 2019-08-30 朱达云 振动式骨传导扬声器

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