KR20090002530A - Leaf spring for small sized sounder - Google Patents

Leaf spring for small sized sounder Download PDF

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Publication number
KR20090002530A
KR20090002530A KR1020070065932A KR20070065932A KR20090002530A KR 20090002530 A KR20090002530 A KR 20090002530A KR 1020070065932 A KR1020070065932 A KR 1020070065932A KR 20070065932 A KR20070065932 A KR 20070065932A KR 20090002530 A KR20090002530 A KR 20090002530A
Authority
KR
South Korea
Prior art keywords
acoustic
leaf spring
vibration
elastic
elastic portion
Prior art date
Application number
KR1020070065932A
Other languages
Korean (ko)
Inventor
한성문
황형용
Original Assignee
아이필유(주)
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
Publication date
Application filed by 아이필유(주) filed Critical 아이필유(주)
Priority to KR1020070065932A priority Critical patent/KR20090002530A/en
Publication of KR20090002530A publication Critical patent/KR20090002530A/en

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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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/03—Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones
    • 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

Abstract

The leaf spring of the small sized acoustic unit is provided to convert the single acoustic of earphone into the complex acoustic through the simple structure. The acoustic coil(1) delivers vibration due to the acoustic signal to the first elastic member(2). The first elastic member is rigidly connected to the acoustic coil. The elasticity bridge performs the role of supporting the first elastic member. The elasticity bridge delivers the subwoofer to the second elastic member from the first elastic member. The vibration of the acoustic signal is transmitted through the leaf spring. The acoustic signal is delivered to the second elastic member. The second elastic member receives the acoustic signal from the elasticity bridge.

Description

Leaf spring for small sized sounder

1 is a structure using a dia frame of a general small speaker (receiver)

2 is a spring application example of a conventional bone conduction speaker

3 is a vibration plate application structure of the conventional bone conduction speaker

4 shows an example of a leaf spring application in which the outer and center are fixed

5 is a case of the application of the leaf spring fixed outside and the center and the acoustic coil is connected

Figure 6 "acoustic coil connection leaf spring embodiment" according to the present invention (bottom-> upper)

Figure 7 is an embodiment of the "acoustic coil connecting leaf spring" according to the present invention (side view)

8 is an embodiment of the present invention applied to a bone conduction speaker

9 is an embodiment in which the sound generating unit 5 is added to the present invention.

FIG. 10 illustrates an embodiment in which the bodily vibration generating unit 6 is added to the embodiment of FIG. 9.

<Description of Major Symbols in Drawing>

1: Acoustic coil 2: First elastic part

3: second elastic portion 4: elastic bridge

5: sound generator 6: weight

The present invention relates to a leaf spring fixed inside the compact acoustic unit housing and transmitting vibrations to the outside of the housing. More specifically, the leaf spring is coupled to the acoustic coil to adjust the number and shape of elastic bridges and to control the weight or sound. It relates to a leaf spring that enables the implementation of various sound ranges through the combination of the generator.

That is, the present invention provides a leaf spring-related structure that can implement bone conduction, general sound, and bodily vibration in a small sound unit such as earphones, headphones, etc., and connects the acoustic coils and interacts with the magnet to provide various sounds. Can produce an effect.

As shown in FIG. 1, a small speaker (receiver) used in a conventional earphone, etc., fixes a magnet and places an acoustic coil at a position capable of interacting with the magnetic force of the magnet, and then the acoustic coil is a diaphragm of film material. In general, a structure in which a vibration of an acoustic signal is transmitted to a diaframe to generate sound through air is attached to the frame.

However, since the diaphragm of the small speaker uses a soft film rather than an elastic material, there is a problem in that bone conduction cannot be realized.

Springs used in some bone conduction speakers are connected to a vibration axis through which bone conduction sound signals are transmitted, as shown in FIG. 2, which is connected to an acoustic coil or a magnet to transmit projections to the bone conduction signal outward. Form. The spring at this time serves only to hold the position of the vibration shaft so as not to deviate, and does not play a role of transmitting a bone conduction signal. Such a bone conduction speaker has a fatal disadvantage in that the bone conduction sound pressure is lowered because the vibration is reduced when the projection is applied to the external contact surface and pressure is applied to the projection.

 Looking at another prior art, as shown in Figure 3, the vibration plate is a structure that is not connected to the acoustic coil or the magnet, which causes the bone conduction vibration, is a structure that is affected by the magnetic force apart from the acoustic coil and the magnet at a predetermined interval. Since the vibration plate is fixed with screws and the concept of elastic bridge is not introduced, it is not easy to freely adjust the vibration width and the bass band, and the vibration width is small, so the vibration screw adds the vibration weight to improve the function of bodily vibration. There are disadvantages that cannot be supported, and it is difficult to miniaturize and costly.

4 is a conventional bone conduction speaker for fixing the acoustic coil and fixing the center of the leaf spring to the center of the magnet to utilize the smooth vibration of the magnet as bone conduction vibration, and the acoustic coil is not connected to the leaf spring. The center is connected to the center of the magnet.

In this case, the weight-bearing magnet is used as a vibrator, so there is an advantage in bodily vibration. However, the bone conduction unit to which this leaf spring is applied has a disadvantage that the weight of the magnet can impose the center fixed coupling of the leaf spring according to the drop test. There is this.

5 is an example of another bone conduction speaker that utilizes the vibration of the magnet as bone conduction vibration, the acoustic coil is fixed on the leaf spring, the center of the leaf spring is fixed to the center of the magnet. In this case, the acoustic coil moving the magnet is not fixed to the outside but fixed to the elastic bridge, and the magnet is also fixed to the leaf spring, which hinders the vibration of the leaf spring, and the outer and center portions of the leaf spring are fixed respectively. It is limited by the vibration width, so it is limited by the smooth bone conduction sound pressure. In addition, there are disadvantages that are weak in impact such as a drop test.

The present invention supports the bone conduction speaker of the bass and bass by introducing a leaf spring that can directly transmit the vibration of the acoustic coil of the small acoustic unit, and furthermore, it is the simplest and simplest to support the wide range and bodily vibration through some simple modifications. The purpose is to provide a leaf spring of a stable structure.

In order to achieve the above technical problem, the present invention is a leaf spring is fixed to the inside of the compact acoustic unit housing for transmitting the vibrations inside the housing, the first elastic portion coupled to the acoustic coil on one surface; A second elastic part having an outer side connected to the inside of the housing; And at least one elastic bridge having one side coupled to the first elastic portion and the other side coupled to the second elastic portion to transfer the vibration of the acoustic coil to the second elastic portion through the first elastic portion. 1 provides a leaf spring characterized in that formed so as not to cause an eccentricity around the elastic portion.

Here, the first elastic part may be formed with an opening in the inner part to install the sound generating part in the opening, thereby realizing the general sound and the bone conduction sound of the leaf spring when the acoustic coil vibrates.

In addition, by installing a weight that is not affected by the magnetic force on the opposite side of the surface on which the acoustic coil of the first elastic part is installed, it is possible to react to a low frequency signal having a large amplitude, thereby enabling a sense of vibration of low sound.

Hereinafter, the technical idea of the present invention will be described in detail with reference to the accompanying drawings.

Figure 6 shows an embodiment of the structure of the leaf spring according to the present invention, the acoustic coil 1 is shown in the state that is connected to the lower portion of the first elastic portion 2 of the leaf spring, The outer second elastic portion 3 and the first elastic portion 2 are connected by the elastic bridge 4, and the number and shape of the elastic bridges 4 are shown to be various implementations.

7 also shows the side of the leaf spring as an embodiment according to the present invention, it shows that the position and shape of the first elastic portion 2 and the second elastic portion 3 can be implemented in various ways.

8 shows an example of a bone conduction speaker to which the present invention is applied.

9 shows an embodiment in which the acoustic generator 5 and the weight 6 are added to the present invention.

When the acoustic signal is applied to the acoustic coil 1, the magnetic force is applied, and the direction of the magnetic force is changed according to the acoustic signal, and the amplitude and the magnitude of the force vary depending on the frequency and the output. In this case, when the magnet is fixedly disposed adjacent to the position affected by the magnetic force, the acoustic coil 1 causes vibration in accordance with the acoustic signal.

The first elastic part and the second elastic part are made of a hard and elastic material such as metal, and the first elastic part is mutually magnetically acted upon and mutually interacts with the acoustic coil 1 when applying the acoustic signal by combining the acoustic coil 1. When the magnet is applied to the position where there is no friction, the leaf spring connected to the acoustic coil 1 serves to transmit bone conduction vibration to the outside.

That is, the second elastic part 3, which is not the first elastic part 2 connected to the vibrating acoustic coil 1, is fixed to the outside, so that the bone elastic vibration is fixed to the second elastic part 3 Delivered to

Although the shape of the acoustic coil, the first elastic portion and the second elastic portion in the above embodiment is circular, it will be clearly clarified that the portion can be deformed to suit the shape of the unit.

The acoustic coil 1 is firmly connected so that the vibration due to the acoustic signal is transmitted to the first elastic part 2 as it is. However, the acoustic coil 1 only needs to be firmly connected so that the vibration of the acoustic signal can be well transmitted. I want to make it clear. That is, in the present invention, the first elastic portion 2 connecting the acoustic coil 1 to the leaf spring can secure sufficient upper and lower amplitudes without fixing the center of the leaf spring, and the first elastic portion 2 is the acoustic coil. Since it is firmly connected to (1) it is possible to oscillate up and down in accordance with the acoustic signal vibration of the acoustic coil (1), thereby enabling smooth bone conduction vibration.

The vibration of the acoustic signal through the acoustic coil 1 causes the first elastic part 2 to be vibrated. The elastic bridge 4 connected to the first elastic part 2 only vibrates within a certain vibration width. It is constructed so that it cannot be exceeded.

The elastic bridge 4 connecting the first elastic portion 2 and the second elastic portion 3 serves to support the first elastic portion 2, but the main role is bone conduction bass in the first elastic portion ( In 2) it serves to transfer to the second elastic part (3).

The diaphragm made of a film material used for a general earphone or the like cannot transmit bone conduction vibrations because the material is so soft that vibration is absorbed / scattered / refractive / reflected, whereas the leaf spring according to the present invention is connected to the acoustic coil 1. The elastic part 2 vibrates up and down according to the acoustic signal, and the vertical vibration of the generated acoustic signal is transmitted through the elastic bridge 4 to the second elastic part 3 which is not connected to the acoustic coil 1. The bone conduction sound signal is transmitted to the place where the elastic part 3 is connected. Unlike the general micro speaker, the vibration of the sound signal is not transmitted through air (gas), but rather through a leaf plate that is a solid bone bone. It also vibrates.

High-frequency high-frequency vibration, which is small in amplitude and fast in vibration, is hard to vibrate because the leaf spring is a hard material. The elastic bridge made of a hard and elastic material can transmit the vibration of bone conduction very efficiently.

The vertical vibration of the first elastic part 3 according to the acoustic signal is transmitted to the elastic bridge 4 and this is immediately converted into a bone conduction sound signal, which is transmitted to the second elastic part 3. .

The force that causes the first elastic part 2 connected to the acoustic coil 1 in the leaf spring to vibrate with sufficient responsiveness according to the acoustic signal is appropriately arranged between the magnet and the acoustic coil 1, the acoustic signal output, and the elastic bridge ( 4) It depends on the material and length / number / shape, magnets, and the correlation of the acoustic coil (1), and can control the sound band and sound pressure band of bone conduction by the adjustment of this force.

In particular, by controlling the length, number, shape and material of the elastic bridge 4 connecting the first elastic portion 2 and the second elastic portion 3 of the leaf spring, the vibration width and the vibration length can be adjusted. The bass, the longer the oscillation length is applied to the phenomenon of the bass becomes the elastic bridge (4) it is possible to adjust the band and sound pressure of the bone conduction mid-bass.

Therefore, it will be apparent that the shape, length, material, and number of the elastic bridge 4 are not limited to the embodiments of the drawings.

The second elastic portion 3 receives the bone conduction sound signal from the elastic bridge 4, the second elastic portion 3 is fixed to the outer frame or the external mechanical object of the acoustic unit to which the present invention is applied It serves as a function of transmitting bone conduction sound signals to the outside.

In FIG. 7, the second elastic part 3 is fixed to the outer frame of the bone conduction unit. However, the second elastic part 3 is not necessarily fixed to the outer frame of the bone conduction unit. It is shown that it is only necessary to be fixed to the mechanical object, and it is not necessary to necessarily be formed at the same height as the 1st elastic part.

Referring to FIG. 9, as an embodiment of the present invention, the upper surface of the acoustic generator 5 and the first elastic portion 2 covering the inner surface of the first elastic portion 2 (opposite side of the acoustic coil 1) Show the weights (6) located in.

As such, when the opening is formed in the first elastic part 2 and the sound generating part 5 is installed therein, the first elastic part 2 vibrates by the acoustic vibration of the acoustic coil 1, and the sound generating part (5) also vibrates together. At this time, the sound generating unit 5 generates a strong sound through interaction with the adjacent air, which is the same as the principle of a general micro speaker.

That is, when a large open space (open part) is formed in the center and covers an acoustic generator 5 such as a film frame diaphragm used in a general small speaker (receiver), a general sound is generated in the center part. In leaf springs, bone conduction sounds can be generated and used as a compact composite function.

By introducing the sound generating unit 5, the sound generating unit 5 generates the general sound, and the elastic bridge 4 generates the bone conduction sound of the bass, so that the effect of the two sound units as one acoustic coil 1 It can be implemented.

The acoustic generator 5 in Figure 9 should be made of a material that does not affect the magnetic force, and only to generate a general sound of the air conduction method is not necessarily limited to the circular shape of Figure 8 do.

FIG. 10 illustrates a case in which haptic vibrations can be realized at the same time by placing a weight 6 that adds a predetermined weight on the opposite side of the first elastic part 2 connected to the acoustic coil 1.

When the weight 6 is added to add the vibration weight, the weight 6 vibrates up and down according to the acoustic vibration of the first elastic part 2, but because of the weight, the elastic bridge 4 is connected. 2, the elastic part 3 will feel the force of bodily vibration.

That is, the weight 6 which adds weight to the opposite surface (opposite magnet) of the oscillating acoustic coil 1 (opposite magnet) 2 is made of a leaf spring material or other material which does not affect the magnetic force, and thus the first weight is placed. When the elastic part 2 is vibrated, the weight of the weight 6 is felt as a bodily sensation vibration which can feel the vibration according to the sound signal.

Due to the high amplitude of the low frequencies, the vibrations are felt at lower frequencies, and the sensation vibrations will bring vivid reality to devices that enjoy multimedia such as movies, games, and music.

Weight (6) should be made of a material that does not affect the magnetic force, and only need to feel a certain weight due to vibration and there is no limitation in shape. However, the vibration should not affect the center of gravity so that the acoustic coil (1) is in physical contact with the magnet or yoke.

According to the present invention, in a small sound generating unit such as a receiver for earphone, the bass can be easily implemented as bone conduction, and the complex sound range and bodily vibration function that can support general sound through some simple modifications can be supported.

It is a very simple structure that converts a single sound of a conventional earphone into a complex sound, and the impact test stability, low cost / high efficiency, workability / productivity It solves the problem and implements the complex function of bodily vibration.

Therefore, when the 'acoustic coil connection leaf spring' of the present invention is introduced into small devices such as earphones, economical implementation is possible, but also the benefits of bone conduction function as well as the vivid reality of complex sound and bodily sensation vibration can be enjoyed. It is expected to attract great attention in the device market.

Claims (3)

A leaf spring fixed inside the compact sound unit housing and transmitting vibrations to the outside of the housing, the leaf spring comprising: a first elastic portion having a sound coil coupled thereto; A second elastic part having an outer side connected to the housing; And at least one elastic bridge having one side coupled to the first elastic portion and the other side coupled to the second elastic portion to transfer the vibration of the acoustic coil to the second elastic portion through the first elastic portion. The leaf spring, characterized in that formed so as not to cause an eccentricity around the elastic portion. In the leaf spring fixed inside the small acoustic unit housing to transmit the vibration of the interior to the outside of the housing, the first elastic portion is coupled to the acoustic coil is coupled to one side of the opening and the acoustic generator is coupled to one side of the inner opening; ; A second elastic part having an outer side connected to the housing; And at least one elastic bridge having one side coupled to the first elastic portion and the other side coupled to the second elastic portion to transfer the vibration of the acoustic coil to the second elastic portion through the first elastic portion. The leaf spring is formed so as not to cause an eccentricity around the elastic part and configured to simultaneously realize general sound and bone conduction sound. The leaf spring according to claim 1 or 2, wherein the first elastic portion is provided with a weight that is not affected by magnetic force on a surface opposite to the surface on which the acoustic coil is installed.
KR1020070065932A 2007-06-30 2007-06-30 Leaf spring for small sized sounder KR20090002530A (en)

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KR1020070065932A KR20090002530A (en) 2007-06-30 2007-06-30 Leaf spring for small sized sounder

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KR1020070065932A KR20090002530A (en) 2007-06-30 2007-06-30 Leaf spring for small sized sounder

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012083551A1 (en) * 2010-12-24 2012-06-28 Jin Zaishan Bone conduction earphone
WO2017061814A1 (en) * 2015-10-08 2017-04-13 이인철 Earphone having woofer function
KR20200078125A (en) * 2018-12-21 2020-07-01 (주)파트론 Vibration generator
CN114205720A (en) * 2021-12-17 2022-03-18 杭州声联智能科技有限公司 Bone conduction vibrator containing laser welding structure and manufacturing method thereof
CN116156381A (en) * 2023-02-21 2023-05-23 迈吉科(山东)医疗器械有限公司 Bone conduction earphone with transducer provided with vibration supporting arm

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012083551A1 (en) * 2010-12-24 2012-06-28 Jin Zaishan Bone conduction earphone
WO2017061814A1 (en) * 2015-10-08 2017-04-13 이인철 Earphone having woofer function
KR20200078125A (en) * 2018-12-21 2020-07-01 (주)파트론 Vibration generator
CN114205720A (en) * 2021-12-17 2022-03-18 杭州声联智能科技有限公司 Bone conduction vibrator containing laser welding structure and manufacturing method thereof
CN114205720B (en) * 2021-12-17 2024-01-23 杭州声联智能科技有限公司 Bone conduction vibrator containing laser welding structure and manufacturing method thereof
CN116156381A (en) * 2023-02-21 2023-05-23 迈吉科(山东)医疗器械有限公司 Bone conduction earphone with transducer provided with vibration supporting arm

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