JP2016134785A - Bone conduction adapter for mobile terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy-to-assemble and low-cost bone conduction adapter for a mobile terminal, enabling a person having difficulty in hearing to perform communication in a similar manner to a person with a normal body.SOLUTION: The bone conduction adapter includes: a connection unit, freely attachable to or detachable from a mobile terminal, to which the voice signal of the mobile terminal is input by attachment; and a bone conduction device which vibrates according to the voice signal through the connection unit. The bone conduction device is formed of a simple structure composed of a coil and a magnet accommodated in a damper, with satisfactory assemblability and economy.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bone conduction adapter for a mobile terminal that enables a mobile terminal such as a mobile phone to make a call in the same manner as a normal person even if it is a deaf person.

  At present, mobile terminals such as smartphones are widespread throughout the world, and anyone can carry them regardless of age or sex.

Japanese Utility Model Publication No. 4-016522

  FIG. 9 is a schematic perspective view of a conventional mobile phone. A speaker 8 is built in an appropriate position in the upper part of the front, and a microphone 8 'is built in the lower part. In addition, various keys B are provided for inputting the liquid crystal screen A and the telephone number of the other party and for mailing.

  In use, as shown in FIG. 10, the speaker 8 is usually put on the ear and a conversation is held with the other party. Smartphones are used in the same way.

  However, since the hearing impaired can not hear, the mail function can be used, but the conversation as a normal telephone cannot be performed. In Japan, as the population ages more and more in the future and the ears become farther away, it is preferable to take some measures.

  The present invention has been proposed in view of the above, and the object of the present invention is to enable a phone call even for a hearing impaired person in the same manner as a normal person, and to be easily assembled and inexpensive for a bone conduction adapter for a portable terminal. Is to provide.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that an audio signal of the portable terminal is input to the portable terminal by being attached to the portable terminal, and the voice signal is transmitted through the connecting section. And a bone conduction device that vibrates accordingly.
According to a second aspect of the present invention, in the bone conduction adapter according to the first aspect, the connecting portion includes a plug 5 detachably attached to a jack 7 provided in the portable terminal 6, and the bone conduction device includes the plug 5, a coil 10 through which an audio signal flows and a damper 12 that holds a vibrator composed of a magnet 11 that is opposed to the coil 10 in the axial direction so as to vibrate.
According to a third aspect of the present invention, in the bone conduction adapter according to the second aspect, the damper 12 encloses both side surfaces and an upper surface of the vibrator, and the upper surface portion is exposed to the outside from an opening 2 c formed in the case 2. A contact portion 12a to the vibration transmitting portion is formed.
The invention according to claim 4 is the bone conduction adapter according to claim 2, wherein the damper 12c has a ring shape, and at least one or more dampers 12c are wound around the outer periphery of the vibrator and the vibrator is disposed. The case portion is a contact portion 12a ′ to the vibration transmitting portion.
The invention according to claim 5 is the bone conduction adapter according to claim 3 or 4, wherein the case 2 includes a first case half 2a and a second case half 2b, and the first case half The coil 10 and the plug 5 are provided in 2a, the vibrator held by the damper 12 is provided in the second case half 2b, and each of the first and second case halves 2a and 2b is provided. It is characterized in that the inside faces each other and is integrated.

According to the first aspect of the present invention, a small and portable bone-conduction type adapter can be integrally attached to a portable terminal such as a smartphone with one touch, and if it is brought into contact with the tragus in the vicinity of the external auditory canal, deafness Even a person can easily recognize the other party's voice and can make a call. In addition, if the plug and jack are compatible, it can be applied to any portable terminal.
According to the second to fourth aspects of the present invention, the main components of the bone conduction device have a small number of parts such as the coil 10, the magnet 11, and the dampers 12 and 12c, and can realize low cost.
According to the fifth aspect, the plug 5 and the coil 10 are arranged in one first case half 2a, and the vibrator is held by the dampers 12 and 12c at predetermined positions of the other second case half 2b. Can be easily assembled by simply placing the first and second case halves 2a and 2b facing each other, and the productivity is good.

The perspective view of the bone conduction adapter and portable terminal which concern on this invention is shown. The perspective view which shows the state which mounted | wore the portable terminal with the bone conduction adapter which concerns on this invention. (A) Top view of bone conduction adapter, (b) Side view of the bone conduction adapter, (c) Bottom view. AA line sectional view in Drawing 3 (c). BB sectional drawing in FIG.3 (b). (A) is CC sectional view taken on the line in FIG.3 (c), (b) shows the enlarged view of A part in (a) figure. Figure 2 shows a schematic diagram of the general shape of the ear. It is a perspective view which shows a use condition. The perspective view of the conventional mobile phone. It is use condition explanatory drawing same as the above. Sectional drawing of 2nd Example of this invention is shown.

  In FIG. 1, reference numeral 1 denotes a bone conduction adapter according to the present invention, and a bone conduction device for converting an audio signal into mechanical motion is built in a head 3 of a case 2 made of, for example, ABS resin. Further, in the state shown in the figure, a plug 5 projects from the bottom surface of the neck portion 4 integrally formed below the head portion 3 located in the upper portion. This plug 5 is detachable from a jack 7 provided on a portable terminal 6 such as a so-called mobile phone or smartphone.

  Since the internal structure of the portable terminal 6 is publicly known, description thereof is omitted. The structure of the plug 5 and the jack 7 is also known, and it is also known that if the plug 5 is inserted into the jack 7, it is electrically and mechanically connected.

  FIG. 2 shows a state where the bone conduction adapter 1 is attached to the portable terminal 6 and integrated. Thereby, the audio signal to the speaker 8 built in the portable terminal 6 is switched to the bone conduction adapter 1, and this type of switching structure is also known.

  FIGS. 3A to 3B show a preferable shape example of the bone conduction adapter 1. The case 2 of the bone conduction adapter 1 includes a head 3 that is circular when viewed from above, and a substantially rectangular neck 4 that is integrally formed on one end of the head 3. The case 2 has a two-part structure of the first and second case bodies 2a and 2b. Note that the shape of the case 2 is not necessarily limited to this shape, and the neck portion 4 may be formed in a bottomed cylindrical shape, for example. In addition, the shape of the head 3 may be appropriately changed.

  FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3 and shows the internal structure of the bone conduction adapter 1. The hollow portion in the head portion 3 of the first case half 2a includes a cylindrical body portion 9a and disk-shaped flanges 9b and 9c integrally formed on each end portion of the body portion 9a. A coil bobbin 9 is disposed. A coil 10 is wound around the outer periphery of the body portion 9 a of the coil bobbin 9, and lead wires (not shown in FIG. 4) at the beginning and end of winding of the coil 10 are connected to the plug 5.

  On the flange 9b side located on the inner side and on the second case half body 2b side, a magnet 11 as a vibrator is arranged so as to face the axial direction of the coil 10. In the illustrated state, the magnet 11 is surrounded by a damper 12 made of an elastic member such as a rubber material, except for the bottom. The bottom surface of the magnet 11 is disposed opposite to the flange 9b of the coil 10 so that howling does not occur.

  In the state shown in the figure, the outer surface of the damper 12 serves as a contact portion 12a to the ear portion, and is exposed to the outside from the opening 2c of the second case half 2b. The abutting portion 12a preferably has a slight thickness to provide cushioning properties. When the abutting portion 12a is abutted, the feel is good. A flange-like protrusion 12b is formed on the outer periphery of the damper 12, and this protrusion 12b engages with a recess 2d formed inside the second case half 2b, and has a magnet 11 therein. The damper 12 is configured so as not to come out from the opening 2c of the second case half 2b.

  In assembling, the lead wires a and b of the coil 10 are connected to the plug 5 and stored in a predetermined position of the first case half 2a. FIG. 5 shows this state.

  The other second case half 2b is provided with a damper 12 with a built-in magnet 11 so that the insides of the first and second case halves 2a and 2b face each other.

  As shown in FIG. 6 (a), a convex portion c is formed at an appropriate location on the inner surface of the second case half 2b, and a concave portion d is formed in the first case half 2a. The convex part c and the concave part d are fitted together. FIG. 6B shows an enlarged view thereof. Needless to say, the convex portion c may be formed in the first case half 2a and the concave portion d may be formed in the second case half 2b.

  If the first and second case halves 2a and 2b are integrated by ultrasonic welding, the bone conduction adapter 1 is completed.

  FIG. 7 shows a typical ear shape. The present inventor made contact with the contact portion 12a of the bone conduction adapter 1 at several locations around the ear and confirmed which portion was most suitable, and found that it was preferable to apply it to the tragus.

  FIG. 8 shows the state of use.

  In use, when the plug 5 is inserted into the jack 7, it can be integrated with the portable terminal 6. The portable terminal 6 is held by hand, and the contact part 12a of the bone conduction adapter 1 is pressed against the tragus. In this case, since the contact portion 12a is made of an elastic member, the touch is good. In this state, when an alternating audio current from the portable terminal 6 flows to the coil 10 through the plug 5, the magnetic flux alternately changes according to the direction of the current according to the law of right-handed amperes. Ampere's right-handed screw law is a law that expresses the relationship between current and the magnetic field around it. When a current is passed, the direction of the current is the direction of the right-handed screw, and a magnetic field is generated in the direction of the right-handed screw. It is.

  A force F generated by Fleming's left-hand rule acts on the magnet 11 in the damper 12. In this case, since the bottom of the damper 12 is opened and the magnet 11 is disposed directly opposite to the coil 10, the magnetic flux of the coil 10 acts quickly on the magnet 11. Since the damper 12 is made of an elastic material, the magnet 11 can vibrate, and the magnet 11 vibrates.

  When the abutting portion 12a is pressed against the tragus which is the vibration transmitting portion, the vibration is promptly transmitted from the ossicles in the back of the ear canal to the auditory nerve after the cochlea and recognized as sound in the brain. As a result, the other party's voice can be heard and conversation can be performed. At this time, no sound leaks outside. In addition, if the contact part 12a is made thick, the touch to the skin is good, and it is economical because it is not necessary to provide a pad of another separate member. Of course, a pad may be provided separately.

  If the bone conduction adapter 1 is removed from the portable terminal, the voice can be heard from the speaker 8 built in the portable terminal, and can be used as a normal portable terminal. It should be noted that the bone conduction adapter 1 of the present invention can be used not only by a hearing impaired person but also by a healthy person, and even if there are people around, there is no sound leakage, so there is no inconvenience.

  FIG. 11 shows a second embodiment of the present invention. In this embodiment, the magnet 11 as a vibrator is held by at least one ring-shaped damper 12c.

  In other words, in this example, the two dampers 12c are wound around the outer periphery of the vibrator so as to be separated from each other, and the vibrating body is disposed on the coil 10.

  Further, the portion of the second case half 2b ′ on which the vibrating body is disposed protrudes upward in the state shown in the figure, and this portion serves as a contact portion 12a ′, and the vibration of the vibrator is passed through the damper 12c. The information is transmitted to the contact portion 12a ′. The abutting portion 12a 'is preferably made thick in order to provide cushioning properties. Conversely, it may be thinned to facilitate transmission of vibration.

  In this case, if the second case half 2b 'is formed of a flexible material, the contact portion 12a' can be vibrated quickly.

  Other configurations, operations, assembling methods, usages, and the like are basically the same as those in the above-described embodiment, and thus are omitted.

  The bone conduction device is not necessarily limited to the above embodiments, and various design changes can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Bone conduction adapter 2 Case 2a 1st case half 2b 2nd case half 3 Head 4 Neck part 5 Plug 6 Mobile terminal 7 Jack 8 Speaker 9 Coil bobbin 9a Trunk part 9b, 9c Flange 10 Coil 11 Magnet 12 Damper 12a , 12a 'Abutting part 12b Protruding part 12c Damper a, b Coil leader

Claims (5)

  A connecting portion that is detachably attached to the portable terminal and receives a voice signal of the portable terminal when worn, and a bone conduction device that vibrates in accordance with the voice signal through the connecting portion. Bone conduction adapter.   The bone conduction adapter according to claim 1, wherein the connecting portion includes a plug (5) that is detachable from a jack (7) provided in the portable terminal (6), and the bone conduction device includes the plug (5). ) And a damper (12) for holding a vibrator composed of a magnet (11) arranged to face the axial direction of the coil (10) so as to vibrate. Bone conduction adapter.   The bone conduction adapter according to claim 2, wherein the damper (12) wraps both sides and an upper surface of the vibrator, and the upper surface portion is exposed to the outside through an opening (2c) formed in the case (2) to transmit vibration. A bone conduction adapter characterized by forming a contact portion (12a) to the portion.   The bone conduction adapter according to claim 2, wherein the damper (12c) has a ring shape, and at least one or more dampers (12c) are wound around the outer periphery of the vibrator and the case portion where the vibrator is disposed is provided. A bone conduction adapter characterized by being a contact portion (12a ') to a vibration transmitting portion.   The bone conduction adapter according to claim 3 or 4, wherein the case (2) comprises a first case half (2a) and a second case half (2b), and the first case half (2a). ) Is provided with the coil (10) and the plug (5), the second case half (2b) is provided with a vibrator held by the damper (12), and the first and second A bone conduction adapter, wherein the insides of the case halves (2a) and (2b) face each other and are integrated.

Images