JP2007151076A - Compact speaker unit and compact speaker using unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact speaker with the maximum size of a diaphragm and the enhanced speaker's sound width and sound quality. <P>SOLUTION: A compact speaker unit includes a yoke, a permanent magnet, a magnet board and a diaphragm, a fixed ring, a voice coil, and a cover member arranged on an inlet side of a setting ditch of the yoke. A part or all of one side of the setting ditch inlet of the yoke is formed almost circular arc which has almost the same center as that of the setting ditch so as to adhere to a lower portion of acoustic duct entrance of a user, and a part or all of the other side of the setting ditch inlet is formed almost semielliptic almost asymmetric to the almost circular arc so as to safely adhere to one side of an upper portion of the acoustic duct inlet. A part or all of one side is formed almost circular arc so that the diaphragm, the fixed ring, and the cover member are almost coincide with a form of the setting ditch inlet, and a part or all of the other side is formed almost semielliptic almost asymmetric to the almost circular arc. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a small speaker unit and a small speaker using the small speaker unit. More specifically, the present invention not only improves the sound range and sound quality of the speaker by maximizing the area of the diaphragm, but also provides a stable wearing feeling to the wearer. The present invention relates to a small speaker unit that can be provided and a small speaker using the small speaker unit.

  In general, as shown in FIG. 6, an ultra-small speaker unit attached to an acoustic device or a communication device such as an earphone, a headphone, and a mobile phone has a yoke having one side opened and an installation groove 1-1 formed therein. 1, a permanent magnet 2 disposed inside the installation groove 1-1 of the yoke 1, a magnet plate 3 for ensuring the magnetic force of the permanent magnet 2, and the yoke while covering the permanent magnet 2 and the magnet plate 3 1, a diaphragm 4 for fixing the edge of the diaphragm 4 to the yoke 1, a voice coil 6 installed on the back surface of the diaphragm 4, the permanent magnet 2 and the magnet plate 3. And the rivet 8 for coupling the PCB 7 disposed on the back surface of the yoke 1 and the entrance of the installation groove 1-1 of the yoke 1 so as to protect the diaphragm 4 installed inside the yoke 1. Installed on the side And a over member 9.

  Such a speaker unit is inserted into a user's ear canal entrance E as shown in FIG. 7 after being joined to a molded product (not shown).

However, the following problems occur in the speaker unit having such a structure:
(1) Since the diaphragm applied to the speaker unit having the above structure is limited in size, further improvement in sound width and sound quality cannot be expected. The sound range and sound quality of the speaker unit are significantly affected by the size of the diaphragm, and the limitations on the size of the diaphragm adversely affect the sound width and sound quality of the speaker.
(2) In addition, the speaker unit having the above-described structure can be installed in the installation groove 1-1 of the yoke 1 including the yoke 1 when the speaker unit is inserted into the ear canal entrance E having a narrow upper part and a wide lower part. All the parts are formed in a substantially circular shape as shown in FIG. 7, and the lower part of the speaker unit is in close contact with the lower part of the wide external auditory canal entrance E, but the upper part of the speaker unit is the upper part of the narrow external auditory canal entrance E. The cartilage site E-3 at the upper part of the ear canal entrance E is pressed while being in close contact with the ear. That is, when the speaker unit formed in a substantially circular shape is inserted into the external auditory canal entrance E having a narrow upper portion and a lower lower portion, the shape of the speaker unit and the shape of the external auditory canal entrance E do not match. Sometimes pressed the cartilage protrusion E-3 on the upper side of the ear canal entrance E. Further, since the shape of the speaker unit does not match the shape of the ear canal entrance E, the speaker unit cannot be stably worn on the ear canal entrance E, and there is a problem that the speaker unit is detached from the ear canal entrance E.

  In view of such problems, the industry has tried to reduce the diameter of the yoke 1 so that the speaker unit can be easily inserted into the ear canal entrance E. In this case, however, the sound quality of the speaker unit is reduced. It becomes a problem.

  The present invention has been devised to solve the above-described problems of the prior art, and the object of the present invention is to maximize the size of the diaphragm that affects the sound range and the sound quality, and the speaker. To provide a small speaker unit and a small speaker using the same that can give a stable wearing feeling when a user wears it while improving the sound width and sound quality of the speaker. is there.

In order to achieve the above object, the present invention provides:
A part of the yoke projects in the direction of the central axis, the yoke includes a yoke in which a substantially circular or arc-shaped installation groove is formed inside the yoke, a permanent magnet inserted into the installation groove of the yoke, and the permanent A permanent plate for securing a magnetic force of the magnet, a fixing ring for fixing an edge of the diaphragm to the yoke, a voice coil disposed on the back surface of the diaphragm, and the permanent magnet. A small speaker comprising a rivet for connecting the magnetic plate and the magnet plate, and a cover member disposed on the installation groove entrance side of the yoke so as to protect the diaphragm installed in the installation groove of the yoke A part or all of one side of the installation groove entrance of the yoke is formed in a substantially arc shape substantially concentric with the installation groove so as to be in close contact with the lower part of the user's ear canal entrance; The other side of the groove entrance A part or all of the diaphragm is formed in a substantially semi-elliptical shape that is substantially asymmetric with the generally arcuate shape so as to be stably attached to one side of the upper part of the ear canal entrance, and the diaphragm, the fixing ring, and the cover member. Is partly or entirely formed on one side so as to substantially match the shape of the inlet of the installation groove, and part or all of the other side is substantially asymmetric with the substantially arcuate shape. Provided is a small speaker unit that is formed in a semi-elliptical shape.

  In addition, the present invention includes the yoke having a part of the yoke protruding in the central axis direction, the installation groove being formed inside the yoke, the permanent magnet being inserted into the installation groove of the yoke, and the permanent magnet Including a magnet plate and a diaphragm for ensuring the magnetic force of the diaphragm, a fixing ring for fixing an edge of the diaphragm to the yoke, a voice coil disposed on the back surface of the diaphragm, and the permanent magnet A rivet for coupling with the magnet plate and a user provided with a cover member disposed on the installation groove entrance side of the yoke so as to protect the diaphragm installed in the installation groove of the yoke. A small speaker unit worn at the entrance of the ear canal, wherein a part or all of one side of the installation groove of the yoke is formed in a substantially arc shape so as to be in close contact with the lower part of the user's ear canal entrance. One on the other side Alternatively, all are formed in a substantially semi-elliptical shape that is substantially asymmetric with the substantially arc shape so as to be stably attached to one side of the upper part of the ear canal entrance, and the diaphragm, the fixing ring, and the cover member are A part or all of one side is formed in a substantially arc shape so that it substantially matches the shape of the installation groove, and a part or all of the other side is formed in a substantially semi-elliptical shape that is substantially asymmetric with the above-mentioned substantially arc shape. Provided is a small speaker unit that is formed.

  In the present invention, a part of the yoke of the small speaker unit described above is covered with a housing, and a part or all of one side of the housing in contact with the opposite side of the installation groove entrance of the yoke has the substantially arc shape. A substantially arc-shaped part is formed so as to cover, a substantially semi-elliptical part is formed on a part or all of the other side so as to cover the substantially semi-elliptical part, and the PCB is electrically connected to the inside of the handle part. Provided is a small speaker characterized in that an electric wire connected to the inside is installed.

  The ultra-small speaker unit according to the present invention and the small speaker using the same are formed in a substantially arc shape concentric with the installation groove so that one side of the installation groove entrance of the yoke is in close contact with the lower part of the user's ear canal entrance. The other side of the installation groove entrance is formed in a substantially semi-elliptical shape that is asymmetric with the above-mentioned arc shape so as to be seated on the upper part of the user's ear canal entrance, and the diaphragm, the fixing ring, and the cover member are The housing is formed in a shape coinciding with the shape of the installation groove entrance, and a housing having a substantially arc-shaped part and a substantially elliptical part is joined so as to cover a part of the yoke, and the shape of the small speaker is on one side Is formed in an approximately egg shape that is wide and narrow on the other side, so that it matches or resembles the shape of the ear canal entrance, and externally, a stable wearing feeling of the speaker can be expected. Pressure on both sides The can be minimized, thereby enabling worn long, internally, the effect capable of improving the sound width and quality of the speakers to maximize the size of the diaphragm is provided.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is an exploded perspective view showing a small speaker unit according to a preferred embodiment of the present invention (hereinafter referred to as “first embodiment”), and FIG. 2 is a cross-sectional plan view showing the small speaker unit shown in FIG. 3 is a perspective view showing a small speaker having the speaker unit shown in FIG. The term "asymmetric" used in the claims and detailed description of the present invention means that both sides of the installation groove are not in the longitudinal direction but in the longitudinal direction perpendicular to the longitudinal direction (reference line C in FIG. 2) with respect to the center point of the installation groove. Must be understood to mean that is not symmetric.

  Referring to FIG. 1, the small speaker unit according to the first embodiment of the present invention partially protrudes in the direction of the central axis, and a substantially circular (or substantially arc-shaped) installation groove 12 is formed in the inside thereof. Is an asymmetrical yoke 10 formed in a substantially arc shape 100 and a substantially semi-elliptical shape 120 on the other side, a substantially circular permanent magnet 20 seated and installed on the inner bottom of the installation groove 12 of the yoke 10, A substantially circular magnet plate 30 for assuring the magnetic force of the permanent magnet, and a vibration which is arranged on the entrance side of the installation groove 12 so as to cover the permanent magnet 20 and the magnet plate 30 and is asymmetrical like the shape of the yoke 10. A plate 40, a fixing ring 50 that is asymmetric like the shape of the yoke 10 so as to fix the edge of the diaphragm 40 to the installation groove 12 of the yoke 10, a voice coil 60 disposed on the back surface of the diaphragm 40, Permanent magnet 20, magnet plate 30, and yaw 10 is arranged on the entrance side of the installation groove 12 of the yoke 10 so as to protect the rivet 70 for joining and integrating the PCBs arranged on the back surface of the 10 and the diaphragm 40 installed in the installation groove 12 of the yoke 10. The cover members 90 </ b> A and 90 </ b> B are asymmetric as in the shape of the yoke 10. In the present embodiment, the rivet 70 is used as a means for bonding the PCB. However, those skilled in the art who are familiar with the present specification can sufficiently consider the bonding method using a binder in addition to the rivet 70. Let's go.

  Referring to FIG. 2 together with FIG. 1, a part of the yoke 10 projects to one side (in the direction of the central axis of the installation groove 12), and a substantially circular (or substantially arc-shaped) installation groove 12 is formed therein. In addition, one side of the inlet of the installation groove 12 is formed in a substantially arc shape 100 that is concentric with the installation groove 12. The other side of the entrance of the installation groove 12 is formed in a substantially semi-elliptical shape 120 that is not concentric with the installation groove 12 and is asymmetric with respect to the center point of the installation groove 12. That is, the entrance of the installation groove 12 has a substantially arc shape 100 and a substantially semi-elliptical shape 120, and has a substantially egg shape or a substantially water drop shape in which one side is round and the other side protrudes.

  As described above, the shape of the entrance side of the installation groove 12 of the yoke 10 is formed of the substantially arc shape 100 and the substantially semi-elliptical shape 120 so as to be asymmetric. This is because the speaker unit matches the shape of the ear canal entrance E. This is to improve wearability. That is, the substantially arcuate shape 100 of the yoke 10 is in close contact with the lower side of the ear canal entrance E, and the substantially semi-elliptical shape 120 is in close contact with one side of the upper portion of the ear canal entrance E to improve wearability. A large number of through holes can be formed in the yoke 10.

  The permanent magnet 20 and the magnet plate 30 inserted into the installation groove 12 and coupled to the yoke 10 by the rivet 70 have a substantially circular shape.

  The diaphragm 40, the fixing ring 50, and the like installed at the entrance of the installation groove 12 of the yoke 10 are formed in an approximately egg shape having different curvatures (asymmetrical) on both sides like the shape of the entrance side of the installation groove 12 of the yoke 10. It is installed on the entrance side of the installation groove 12. That is, after the diaphragm 40 is seated on the entrance of the installation groove 12, the fixing ring 50 is fitted to the entrance of the installation groove 12 to fix the edge of the diaphragm 40.

  Cover members 90 </ b> A and 90 </ b> B for protecting components installed inside the installation groove 12 are also formed in the same shape as the shape of the entrance of the installation groove 12 of the yoke 10. At this time, the cover members 90A and 90B are made of a metal material or a synthetic resin material, and are formed of an inner cover member 90A for protecting the internal parts installed on the inlet side of the installation groove 12, and a woven material. It can be divided into an external cover member 90B for blocking the inflow of objects.

  Since the connecting process of the components of the speaker unit according to the present invention configured as described above is general, detailed description thereof is omitted.

  Referring to FIG. 3, the small speaker having the speaker unit configured as described above includes a housing 200 formed on the yoke 10 of the speaker unit so as to cover a part of the yoke 10 (opposite the entrance to the installation groove 12). It has a combined structure.

  The housing 200 covers a part of the yoke 10 to which the cover member 90 is not coupled, protects the electric wire connected to the PCB, and facilitates the mounting of the speaker. Similar to the shape of the 12 inlet, a substantially arc-shaped portion 210 is formed on one side, a substantially semi-elliptical portion 220 is formed on the other side, and a handle portion 230 is formed to project. The substantially arc-shaped part 210 and the substantially semi-elliptical part 220 are arranged so as to cover a part of the yoke 10, that is, the substantially arc-shaped part 100 and the substantially semi-elliptical part 120 of the protruding part on the opposite side of the entrance of the installation groove 12. Combined with The housing 200 is firmly coupled to the yoke 10 by a coupling member such as a rubber ring while covering the yoke 10. The material of the housing 200 is preferably a synthetic resin material.

The electric wire electrically connected to the PCB coupled to the protruding portion on the opposite side of the entrance of the installation groove 12 is connected to the outside through the inside of the housing 200.
The operation of the small speaker to which the speaker unit configured as described above is applied will be described as follows.

  On the outer side of the yoke 10 of the speaker unit in which various components for converting electrical signals into sound are installed in the installation groove 12, a substantially arc-shaped portion 210 and a substantially semi-elliptical portion are formed in the same manner as the shape of the yoke 10. The following description is based on the assumption that a small speaker 220 formed with the housing 200 covering the yoke 10 is worn at the entrance E of the ear canal.

  As shown in FIG. 4, the lower side of the ear canal entrance E has a relatively round and wide arc shape between the tragus E-1 and the earlobe E-2. -3 and the inner wall E-4 of the auricle made of cartilage, the shape gradually narrows. That is, the upper part has a substantially elliptic shape, and the lower part has a substantially circular shape that is asymmetric with the upper part, and has a substantially egg shape as a whole.

  Therefore, in order to wear a small speaker including the housing 200 covering the yoke 10 with a shape like the yoke 10 having a substantially egg shape composed of the substantially arc shape 100 and the substantially semi-elliptical shape 120, at the ear canal entrance E, A handle portion 230 of a small speaker in which the speaker unit and the housing 200 are coupled is attached and inserted into the ear canal entrance E. The substantially arcuate portion 210 of the housing 200 that covers the substantially arc shape 100 of the yoke 10 is the lower part of the ear canal entrance E. The substantially semi-elliptical portion 220 covering the substantially semi-elliptical shape 120 of the yoke 10 is located on one side (between the cartilage protrusion E-3 and the inner wall E-4 of the auricle). ). That is, as shown in FIG. 4, the substantially semi-elliptical portion 220 is inserted obliquely so as to be positioned between the cartilage protruding portion E-3 and the inner wall E-4 of the auricle to be seated.

  If a small speaker is inserted into the ear canal entrance E in this process, the outer peripheral surface of the substantially arc-shaped portion 210 of the housing 200 is in close contact with the lower side of the ear canal entrance E, and the outer peripheral surface of the substantially semi-elliptical portion 220 is the outer ear canal entrance. Wearing is completed by closely contacting one side of the top of E.

  At this time, a substantially arcuate portion 210 of the housing 200 that covers the substantially arcuate shape 100 formed on the yoke 10 of the speaker unit is the same as the shape on the lower side of the ear canal entrance E that is formed in a substantially arcuate shape. The substantially semi-elliptical portion 220 of the housing 200 that is formed (or similar) and covers the substantially semi-elliptical shape 120 of the yoke 10 is formed in the lower part by the cartilage protrusion E-3 and the inner wall E-4 of the auricle. Since it is formed to be the same (or similar) to the shape of one side of the upper part of the ear canal entrance E that is formed narrower than the ear canal, the small speaker can be stably worn on the ear canal entrance E.

  Then, one side of the small speaker located on one side of the upper part of the external auditory canal entrance E having a shape narrowed by the cartilage protrusion E-3 and the inner wall E-4 of the pinna becomes gradually narrower like the upper side of the ear canal entrance E. Since it is formed in a substantially semi-elliptical shape, it is difficult for the speaker unit to press the cartilage protrusion E-3 of the ear canal entrance E and the inner wall E-4 of the auricle even when the speaker unit is worn for a long time.

  In other words, since the space between the cartilage protrusion E-3 of the ear canal entrance E and the inner wall E-4 of the pinna is gradually narrowed, the shape is similar to the shape of the upper part of the ear canal entrance E. The substantially semi-elliptical shape 120 and the substantially semi-elliptical shape portion 220 are positioned on one side of the upper part of the ear canal entrance E (between the cartilage projecting portion E-3 and the inner wall E-4 of the auricle), and the cartilage projecting. The portion E-3 and the inner wall E-4 of the auricle are not compressed.

  On the other hand, in the small speaker according to the present embodiment, the substantially arc-shaped portion 210 of the housing 200 is placed between the tragus E-1 and the earlobe E-2, thereby providing a stable wearing feeling.

  In the small speaker according to the present invention, since the installation groove 12 of the speaker unit is formed so that the substantially semi-elliptical shape 120 protrudes to the other side, the sound quality of the small speaker according to the conventional technology of the same size is further improved. Output sound quality.

  FIG. 5 shows a speaker unit according to another preferred embodiment (hereinafter referred to as “second embodiment”) of the present invention.

  The second embodiment of the present invention shown in FIG. 5 is the same as the first embodiment except that all the parts of the speaker unit are formed in a substantially arc shape 100 and a substantially semi-elliptical shape 120. . More specifically, one side of the installation groove 12 of the yoke 10 is formed in a substantially arc shape 100 so as to be in close contact with the lower part of the user's external auditory canal entrance E, and the other side of the installation groove 12 is the user's external ear canal entrance. The diaphragm 40, the fixing ring 50, and the cover member 90A, which are formed in a substantially semi-elliptical shape 120 that is asymmetric with the substantially arc shape 100 so as to be seated on one side of the upper part of E, are installed in the installation groove 12. 90B is formed in a shape that matches the shape of the installation groove 12. The housing 200 that covers the yoke 10 of the speaker unit also has a substantially arcuate part 210 and a substantially semielliptical part 220 that coincide with the substantially arcuate shape 100 and the substantially semielliptical shape 120 of the yoke 10. Therefore, in the small speaker to which the speaker unit according to the second embodiment is applied, not only the yoke 10 but also various parts installed in the installation groove 12 are formed in the same shape as the yoke 10, and the housing 200 is also formed. By forming the yoke 10 like a shape, the cartilage protrusion E-3 of the ear canal entrance E and the inner wall E-4 of the auricle are stably worn without being compressed as in the first embodiment of the present invention. be able to.

  Although the overall size of the speaker unit does not change, the permanent magnet 20, the diaphragm 40, the magnet plate 30, and the like are formed in a shape in which a substantially arc shape 100 and a substantially semi-elliptical shape 120 are combined like the shape of the yoke 10. Since the area is increased, it is possible to provide an improved sound quality as compared with a speaker unit of the same size.

The disassembled perspective view which showed the small speaker unit by 1st Embodiment of this invention. FIG. 3 is a plan sectional view showing the small speaker unit in FIG. 1. The perspective view which showed the small speaker which has a speaker unit in FIG. The use condition figure which showed the wearing condition of the small speaker in FIG. The top view which showed the small speaker unit by 2nd Embodiment of this invention. Sectional drawing which showed the small speaker unit by a prior art. FIG. 7 is a use state diagram of the small speaker unit in FIG. 6.

Explanation of symbols

10: Yoke 12: Installation groove 20: Permanent magnet 30: Magnet plate 40: Diaphragm 50: Fixing ring 60: Voice coil 70: Rivet 90A, 90B: Cover member 100: Substantially arc shape 120: Substantially semi-elliptical shape 200: Housing 210: substantially arc-shaped part 220: substantially semi-elliptical part 230: handle part

Claims (3)

A part of the yoke projects in the direction of the central axis, and the yoke includes the yoke in which a substantially circular installation groove is formed. The permanent magnet is inserted into the installation groove of the yoke. A magnet plate and a diaphragm for ensuring magnetic force, a fixing ring for fixing an edge of the diaphragm to the yoke, a voice coil disposed on the back surface of the diaphragm, and the permanent magnet A small speaker including a rivet for coupling with a magnet plate and a cover member disposed on the installation groove entrance side of the yoke so as to protect the diaphragm installed in the installation groove of the yoke Unit,
A part or all of one side of the installation groove entrance of the yoke is formed in a substantially arc shape substantially concentric with the installation groove so as to be in close contact with the lower part of the user's external ear canal entrance. A part or all of the side is formed in a substantially semi-elliptical shape that is substantially asymmetric with the substantially arc shape so as to be stably attached to one side of the upper part of the ear canal entrance, and the diaphragm, the fixing ring, and the cover The member is formed in a substantially arc shape on one side so that it substantially matches the shape of the inlet of the installation groove, and a part or all on the other side is substantially asymmetric with the substantially arc shape. A small speaker unit that is formed in a substantially semi-elliptical shape.   A part of the yoke protrudes in the central axis direction, and part or all of one side is formed in a substantially arc shape inside the yoke, and part or all of the other side is formed in a substantially semi-elliptical shape. A yoke provided with an installation groove, a permanent magnet inserted into the installation groove of the yoke, a magnet plate and a diaphragm for ensuring the magnetic force of the permanent magnet, and an edge of the diaphragm A fixing ring for fixing to the yoke, a voice coil disposed on the back surface of the diaphragm, a rivet for coupling the permanent magnet and the magnet plate, and a setting groove of the yoke; A small speaker unit, which is provided at the entrance of the user's ear canal and includes a cover member disposed on the entrance side of the installation groove of the yoke so as to protect the diaphragm. Part or all of It is formed in a substantially arc shape so as to be in close contact with the lower part of the user's ear canal entrance, and part or all of the other side of the installation groove is stably attached to one side of the upper part of the ear canal entrance. The diaphragm, the fixing ring, and the cover member are formed in a substantially semi-elliptical shape that is substantially asymmetric with the substantially arcuate shape, and a part or all of one side thereof is substantially a circle so that it substantially matches the shape of the installation groove. A small speaker unit characterized in that it is formed in an arc shape, and a part or all of the other side is formed in a substantially semi-elliptical shape that is substantially asymmetric with the substantially arc shape. A part of the yoke of the small speaker unit according to claim 1 or 2 is covered with a housing, and a part or all of one side of the housing that is in contact with the opposite side of the installation groove entrance of the yoke has the substantially arc shape. A substantially arc-shaped part is formed so as to cover, a substantially semi-elliptical part is formed on a part or all of the other side so as to cover the substantially semi-elliptical part, and the PCB is electrically connected to the inside of the handle part. A small speaker characterized in that an electric wire connected to the inside is installed.

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