WO2007129685A1 - スピーカ - Google Patents
スピーカ Download PDFInfo
- Publication number
- WO2007129685A1 WO2007129685A1 PCT/JP2007/059450 JP2007059450W WO2007129685A1 WO 2007129685 A1 WO2007129685 A1 WO 2007129685A1 JP 2007059450 W JP2007059450 W JP 2007059450W WO 2007129685 A1 WO2007129685 A1 WO 2007129685A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- edge
- diaphragm
- speaker
- damper
- elastic modulus
- Prior art date
Links
- 230000002093 peripheral effect Effects 0.000 claims description 32
- 229920001971 elastomer Polymers 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims 1
- 239000006260 foam Substances 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 description 13
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 8
- 239000004744 fabric Substances 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/041—Centering
- H04R9/043—Inner suspension or damper, e.g. spider
-
- 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
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
-
- 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
-
- 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
- H04R2400/07—Suspension between moving magnetic core and housing
Definitions
- the present invention relates to a speaker used in various electronic devices.
- a conventional speaker 100 includes a magnetic circuit 101, a voice coil body 102, a diaphragm 103, and a frame 105, as shown in FIG.
- the voice coil body 102 is disposed so as to be movable with respect to a magnetic gap provided in the magnetic circuit 101, and is connected to the inner peripheral end of the diaphragm 103.
- the outer peripheral end of the diaphragm 103 is connected to the frame 105 via the diaphragm edge 104.
- the rear surface of the diaphragm 103 is connected to the frame 105 via a suspension holder 106 and an edge 107.
- the protruding shape of the diaphragm edge 104 and the protruding shape of the edge 107 are in opposite directions, the vertical amplitude of the diaphragm 103 becomes vertically symmetric. As a result, distortion in the speaker 100 is reduced.
- Patent Document 1 Japanese Patent Laid-Open No. 2004-7332
- Patent Document 1 JP 2004-7332 A
- the present invention provides a speaker having low distortion characteristics and high driving efficiency.
- the speaker of the present invention includes a frame, a magnetic circuit, a voice coil body, a diaphragm, a first combined body, and a second combined body, and the magnetic circuit supported by the frame forms a magnetic gap.
- the voice coil body is movably disposed with respect to the magnetic gap, and the diaphragm has an outer peripheral portion connected to the frame via the diaphragm edge, an inner peripheral portion connected to the voice coil body, and the first
- the combined body and the second combined body are respectively provided on the magnetic circuit side from the diaphragm, and the inner peripheral portion is connected to the voice coil body and the outer peripheral portion is connected to the frame.
- the first combined body has a first damper and a first edge
- the second combined body has a second damper and a second edge
- the first edge is It has a first edge protrusion that protrudes in the direction of the diaphragm or in the opposite direction of the diaphragm
- the second edge is the same as the protrusion direction of the first edge protrusion.
- FIG. 1 is a cross-sectional view of a speaker according to Embodiment 1 of the present invention.
- FIG. 2 is an enlarged cross-sectional view of a main part of the speaker shown in FIG.
- FIG. 3 is an enlarged cross-sectional view of a main part of a speaker according to another example of Embodiment 1 of the present invention.
- FIG. 4 is a cross-sectional view of a speaker according to Embodiment 2 of the present invention.
- FIG. 5 is a cross-sectional view showing a speaker according to another example of Embodiment 2 of the present invention.
- FIG. 6 is a cross-sectional view showing a speaker according to still another example of Embodiment 2 of the present invention.
- FIG. 7 is a cross-sectional view of a speaker according to Embodiment 3 of the present invention.
- FIG. 8 is an enlarged cross-sectional view of the main part of the speaker shown in FIG.
- FIG. 9 is an enlarged cross-sectional view of a main part of a speaker according to another example of Embodiment 3 of the present invention.
- FIG. 10 is a cross-sectional view of a speaker according to Embodiment 4 of the present invention.
- FIG. 11 is an enlarged cross-sectional view of the main part of the speaker shown in FIG.
- FIG. 12 is a cross-sectional view of a conventional speaker.
- FIG. 1 is a cross-sectional view showing a speaker 20 according to Embodiment 1 of the present invention.
- FIG. 2 is an enlarged cross-sectional view of a main part of the speaker 20 shown in FIG.
- the speaker 20 includes a mortar-shaped frame 5, a magnetic circuit 1, a voice coil body 2, and a diaphragm 3.
- the magnetic circuit 1 is arranged at the bottom center of the frame 5. Further, the magnetic circuit 1 is formed by combining and adhering a disk-shaped magnet la, a disk-shaped plate lb, and a cylindrical yoke lc.
- a magnetic gap 8 is formed between the inner peripheral side surface of the side wall portion of the yoke lc and the outer peripheral side surface of the plate lb.
- the magnetic gap 8 has a cylindrical shape that opens toward the upper surface side in the magnetic circuit 1.
- the voice coil body 2 includes a cylindrical main body 2a and a coil 2b wound around the outer periphery of the main body 2a. And have.
- a thin dish-like diaphragm 3 is connected to the upper outer peripheral portion of the voice coil body 2.
- the voice coil body 2 is arranged so as to be movable in the vertical direction with respect to the magnetic gap 8. When the voice coil body 2 moves in the vertical direction, the diaphragm 3 vibrates.
- a dust cap 9 is provided at the upper end portion of the voice coil body 2 for dust prevention.
- the diaphragm 3 is a sound source of the speaker 20.
- the diaphragm 3 is mainly made of pulp or rosin having both high rigidity and internal loss.
- the outer peripheral end portion of the diaphragm 3 is connected to the open end portion of the frame 5 through a diaphragm edge 4 (hereinafter referred to as an edge 4) protruding upward.
- the inner peripheral end portion of the diaphragm 3 is bonded and fixed to the outer peripheral side of the main body 2a.
- the edge 4 is formed using a foamed urethane resin, or a material such as foamed rubber, SBR rubber, or cloth so as not to apply a movable load to the diaphragm 3.
- the first damper 10a (hereinafter referred to as damper 10a) and the second damper 10b (hereinafter referred to as damper 10b) It is connected to the outer peripheral side of the main body 2a.
- the dampers 10a and 10b are connected to the magnetic circuit 1 side with respect to the main body 2a rather than the fixed portion 3a of the diaphragm 3.
- the damper 10a and the damper 10b are connected to the main body 2a with a predetermined distance L.
- the outer peripheral end portion of the damper 10a is connected to the frame 5 via a first edge 11a (hereinafter referred to as an edge 1 la) that is a separate body from the damper 10a.
- the outer peripheral end portion of the damper 10b is connected to the frame 5 via a second edge l ib (hereinafter referred to as an edge l ib) that is separate from the damper 10b.
- the damper 10a and the edge 11a constitute a first combined body 12a (hereinafter referred to as a combined body 12a).
- the damper 10b and the edge l ib constitute a second combined body 12b (hereinafter referred to as combined body 12b).
- the edge 11a and the edge l ib are fixed to the frame 5 in a state of being integrated via the spacer 31.
- the height of the spacer 31 is L, and the edge 11a and the edge l ib are fixed to the frame 5 with a predetermined distance L.
- the distance between the damper 10a and the damper 10b and the distance between the edge 11a and the edge l ib are both configured with a predetermined distance L.
- damper 10a and damper 10b The interval and the interval between edge 1 la and edge 1 lb are not necessarily limited to equal intervals U!
- the shape of each of the dampers 10a and 10b, the edges l la, l ib, the spacer 31 and the like may be determined in consideration.
- the dampers 10a and 10b have a ring-shaped corrugated plate structure.
- the voice coil body 2 has a structure that expands and contracts in response to the vertical movement.
- the dampers 10a and 10b are formed using a material such as foamed urethane resin, foamed rubber, SBR rubber or cloth so as not to apply a large movable load to the diaphragm 3 like the edge 4. Yes.
- the edge 11a has a first edge protruding portion 21a (hereinafter referred to as a protruding portion 21a) having a semicircular cross section protruding in the direction of the diaphragm 3.
- the edge l ib has a second edge protruding portion 21b (hereinafter referred to as a protruding portion 21b) having a semicircular cross section that protrudes in the opposite direction to the diaphragm 3.
- the edges l la and l ib are formed using a material such as foamed urethane resin, foamed rubber, SBR rubber or cloth so as not to apply a large movable load to the diaphragm 3.
- the elastic modulus EO of edge 4 is compared with the elastic modulus E1 of edge 11a and the elastic modulus E2 of edge l ib, respectively, the elastic modulus EO of edge 4 is the smallest, It is preferable that the elastic modulus E2 of the edge l ib where the elastic modulus E1 of the edge 11a is small is the largest. That is, it is preferable that the relationship of E0 ⁇ E1 ⁇ E2 is satisfied, the edge 4 is the softest, the edge 11a is the softest, and the edge 1 lb is the hardest. The reason for this will be described in detail later. For example, when edge 4 and edge 11a are formed using urethane resin, foamed urethane resin or foam rubber, and edge l ib is formed using a rubber material, E0 and E1 ⁇ E2 The following conditions are obtained.
- the speaker 20 when an audio signal is input to the coil 2b, the speaker 20 reacts to a magnetic field formed in the magnetic gap 8, and the voice coil body 2 operates in the vertical direction.
- the voice coil body 2 When the voice coil body 2 operates, the diaphragm 3 vibrates and a sound is emitted from the speaker 20.
- the edges l la and l ib are provided at the outer peripheral end portions of the dampers -10a and 10b, the distortion of the sound generated by the speaker 20 is suppressed, and the driving efficiency of the speaker 20 is further increased.
- the dampers 10a and 10b are connected to the inner and outer peripheral ends and the force voice coil body 2 and the frame 5, and have the purpose of suppressing rolling that occurs during the operation of the voice coil body 2. To do. Therefore, in order to easily follow the operation of the voice coil body 2, the dampers 10a and 1 Ob have a ring-shaped corrugated plate structure and are given elasticity. Due to the damper 10a, 10b force ring-shaped corrugated plate structure, when the amplitude of the voice coil body 2 is small, the operation of the voice coil body 2 is less likely to be a heavy load. However, as the amplitude of the voice coil body 2 increases, the loads on the dampers 10a and 10b with respect to the operation of the voice coil body 2 increase.
- combined body 12a has damper 10a and edge 1 la
- combined body 12b has damper 10b and edge l ib.
- the outer periphery of the damper 10a is connected to the frame 5 via the edge 11a.
- the outer peripheral portion of the damper 10b is connected to the frame 5 via the edge l ib.
- the protrusion 21b of the edge l ib is elastically deformed according to the stress applied to the edge l ib.
- the cross-sectional shape of the protrusions 21a and 21b is a semicircular shape, the elastic deformation of the edges l la and l ib is performed smoothly, and the stress applied to the edges ll a and l ib is absorbed smoothly.
- the cross-sectional shapes of the protruding portions 21a and 21b are semicircular.
- the cross-sectional shape of the protrusions 21a and 21b is not limited to a semicircular shape.
- the protrusions 21a and 21b are elastically deformed smoothly, for example, the protrusions having an acute-angled cross section or an ellipse It may be a protruding part (not shown) or the like.
- the voice coil body 2 is supported in the vertical direction by three supports including the edge 4, the coupling body 12a, and the coupling body 12b.
- the edge 4 having the largest planar area is made thin, and the weight of the vibration part including the diaphragm 3 and the edge 4 is reduced.
- the weight of diaphragm 3 And the weight of the edge 4 is reduced, and the driving efficiency of the speaker 20 is increased.
- the edge 4 is thin, the support strength of the voice coil body 2 is lowered. Therefore, the edge 11a and the edge l ib are made thicker than the edge 4. This compensates for a decrease in the support strength of the voice coil body 2.
- the elastic modulus Ea of the bonded body 12a and the elastic modulus Eb of the bonded body 12b are larger than the elastic modulus E0 of the edge 4. That is, the relationship between E0 and Ea and E0 and Eb is satisfied, and the combination 12a and the combination 12b are harder than the edge 4.
- the support of the voice coil body 2 is predominantly supported by the combined body 12a and the combined body 12b. Therefore, when the vertical load of the combined body 12a and the vertical load of the combined body 12b are in the same state as much as possible, the distortion of the vertical movement of the diaphragm 3 is effectively suppressed.
- the dampers 10a and 10b have a ring-shaped corrugated plate structure, and project in the opposite direction to the third projecting portion 22a projecting in the direction of the diaphragm 3 and the third projecting portion 22a.
- the fourth protrusion 22b has a plurality of each. Therefore, basically, the loads in the vertical direction of the dampers 10a and 10b are substantially equal.
- the edge l ib has a protruding portion 21b protruding downward. That is, the protruding portion 21b has a shape protruding in the opposite direction to the diaphragm 3. Further, the projecting portion 21b has a semicircular cross section substantially.
- the edge l ib is easily deformed downward in FIG. 2, that is, in a direction opposite to the diaphragm 3.
- the edge l ib is not easily deformed upward in FIG. 2, that is, in the direction of the diaphragm 3! /.
- an edge 11a is provided to absorb the difference in the vertical deformation at the edge l ib.
- the edge 11a By providing the edge 11a, the characteristic of being easily deformed downward, which is the difference in the vertical load at the edge l ib, is absorbed. Therefore, the edge 11a has a shape facing the edge l ib.
- the edge 11a has a protruding portion 21a that protrudes upward in FIG. 2, ie, in the direction of the diaphragm 3. Furthermore, the protrusion 21a has a substantially half cross section. It has a circular shape. Thus, it tends to be deformed upward in FIG. 2, that is, in the direction of the diaphragm 3. On the other hand, it is difficult to deform downward in FIG. 2, that is, in the direction opposite to the diaphragm 3. Thus, the protrusion 21a of the edge 11a and the protrusion 21b of the edge l ib have a substantially semicircular shape in cross section and are arranged to face each other. As a result, the magnitude of the vertical load at edge 1 la is substantially the same as the magnitude of the vertical load at edge 1 lb.
- edges lla and lib will be described in further detail.
- the elastic modulus E1 of the edge 11a is slightly smaller than the elastic modulus E2 of the edge lib. That is, as shown in FIG. 1, the edge 4 force protrudes upward in FIG. For this reason, the load difference due to the edge 4 is considered, and the edge 11a is softer than the edge l ib.
- the edge 4 is thin! As a result, the weight of the diaphragm 3 and the weight of the edge 4 are reduced, and the driving efficiency of the speaker 20 is increased. For this reason, the load with respect to the vertical movement of the diaphragm 3 is not so large. However, since the edge 4 protrudes upward in FIG. 1, the edge 4 is deformed upward, and conversely, it is difficult to deform downward. This difference is a slight difference in the vertical dynamic load of the diaphragm 3. As described above, in the speaker 20 of the present invention, the elastic modulus E1 of the edge 11a is slightly smaller than the elastic modulus E2 of the edge l ib with respect to the difference in the vertical movement load of the diaphragm 3. That is, edge 11a is slightly softer than edge l ib. As a result, the difference in the vertical movement load of the diaphragm 3 is adjusted to substantially the same state.
- the voice coil body 2 moves upward in FIG. 1 and in FIG. 2 due to the shape of the edge 4 and the shape of the edge 11a. It is easier to move than moving downward. Furthermore, downward movements are easier to move than upward movements due to the shape of the edge rib. From this, it is assumed that the edge 11a and the edge 4 are one pair for one edge l ib, and the ease of movement is considered respectively.
- the elastic modulus E1 of the edge 11a is slightly smaller than the elastic modulus E2 of the edge l ib.
- the vertical amplitude of the diaphragm 3 is substantially symmetrical in the vertical direction, and distortion in the speaker 20 is reduced.
- the largest edge 4 of the planar shape is lightened, the light weight of the vibration part of the speaker 20 can be easily achieved, and the mid-high sound can be reproduced.
- the speaker 20 can be obtained with high driving efficiency even for the live speaker 20.
- the damper 10a and the edge 1 la have different elastic moduli, and are set so that both function independently according to the vibration width of the voice coil body 2.
- the elastic modulus between the damper 10a and the edge 11a, that is, the connecting portion 23a between the damper 10a and the edge 11a is set larger than the elastic modulus of the damper 10a and larger than the elastic modulus of the edge 11a. This ensures the independence of the damper 10a and the edge 11a. That is, it is desirable that the connecting portion 23a is harder than the edge 11a that is harder than the damper 10a.
- the damper 10b and the edge l ib have different elastic moduli, and are set so that they function independently according to the vibration width of the voice coil body 2.
- Elastic modulus force between the damper 10b and the edge l ib that is, the connecting portion 23b between the damper 10b and the edge l ib is set larger than the elastic modulus of the damper 10b and larger than the elastic modulus of the edge l ib This ensures the independence of the damper 10b and the edge l ib. That is, it is desirable that the connecting portion 23b is harder than the edge l ib which is harder than the damper 10b.
- the elastic modulus force of the connecting portion 23a is larger than the elastic modulus of the damper 10a and larger than the elastic modulus of the edge 11a, for example, an adhesion where the edge 11a and the damper 10a are bonded
- an acrylic hard adhesive may be used.
- a reinforcing material (not shown) is attached to the connection portion 23a, the elastic modulus of the connection portion 23a can be easily increased.
- the modulus of elasticity of the connecting portion 23b in order to set the modulus of elasticity of the connecting portion 23b to be larger than the modulus of elasticity of the damper 10b and larger than the modulus of elasticity of the edge l ib, for example, the bonding where the edge l ib and the damper 10b are bonded together Acrylic hard adhesive is used as the agent type It should be done. Further, when a reinforcing material (not shown) is attached to the connection portion 23b, the elastic modulus of the connection portion 23b can be easily increased.
- FIG. 3 is an enlarged cross-sectional view of a main part showing another example of speaker 20 according to Embodiment 1 of the present invention.
- the speaker 20 shown in FIG. 3 differs from the speaker 20 shown in FIGS. 1 and 2 in the configuration of edges l la and l ib, that is, the configuration of the coupling bodies 12a and 12b, and the other parts are the same in configuration.
- the speaker 20 shown in FIG. 3 has a configuration in which the protruding portion 21a of the edge 11a protrudes in the direction opposite to the diaphragm 3 and the protruding portion 21b of the edge rib protrudes in the direction of the diaphragm 3.
- the damper 10a and the edge 11a constitute a first combined body 12a
- the damper 10b and the edge l ib constitute a second combined body 12b.
- the edge 11 a and the edge l ib are fixed to the frame 5 in a state of being integrated via the spacer 31.
- the speaker 20 shown in FIG. 3 is also provided with the speaker 20 in which the distortion of the sound generated by the speaker 20 is suppressed and the driving efficiency of the speaker 20 is increased. Similarly, since the weight of the vibration part of the speaker 20 can be easily reduced, the driving efficiency is high and the speaker 20 can be obtained even with a medium / high sound reproduction spin force 20.
- FIG. 4 is a cross-sectional view showing speaker 20 according to Embodiment 2 of the present invention.
- FIG. 5 is a cross-sectional view showing another example of the speaker 20 according to Embodiment 2 of the present invention.
- FIG. 6 is a sectional view showing another example of the speaker 20 according to the second embodiment of the present invention.
- the speaker 20 according to the second embodiment is different from the speaker 20 according to the first embodiment in the configuration of the edges l la and l ib, that is, the configurations of the coupling bodies 12a and 12b. Same configuration as 1.
- the speaker 20 shown in FIG. 4 is provided with a first edge 11c (hereinafter referred to as edge 11c) instead of the edge 11a of the speaker 20 according to the first embodiment.
- the edge 11c includes two first edge protrusions 21c (hereinafter referred to as protrusions 21c) and one third edge protrusion 21.
- e (hereinafter referred to as the protrusion 21e) has a corrugated cross-sectional shape.
- the protruding portion 21c protrudes in the direction of the diaphragm 3, and the protruding portion 21e protrudes in the opposite direction of the diaphragm 3.
- the edge 11c is formed using a foamed urethane resin or a material such as foamed rubber, SBR rubber, or cloth so as not to apply a large movable load to the diaphragm 3.
- the damper 10a and the edge 11c constitute a first combined body 12c.
- the edge 11c and the edge l ib are fixed to the frame 5 in a state of being integrated via the spacer 31.
- the edge 11c has two protrusions 21c protruding in the upper direction of FIG. 4, that is, in the direction of the diaphragm 3, and one protrusion protruding in the opposite direction of the diaphragm 3.
- 21e. 4 is deformed in the upper direction in FIG. 4, that is, in the direction of the diaphragm 3, and is not easily deformed in the lower direction in FIG. 4, that is, in the direction opposite to the diaphragm 3. Therefore, by combining edge l ib and edge 11c and force as shown in FIG. 4, the magnitude of the vertical load of edge l ib and the magnitude of the vertical load of edge 11c are substantially the same.
- the elastic modulus E1 of the edge 11c is slightly smaller than the elastic modulus E2 of the edge l ib.
- the edge 11c is slightly softer than the edge l ib.
- the elastic modulus of edge 11c El force The elastic modulus E1 of edge l ib is slightly smaller than the elastic modulus E2 of edge l ib, as explained in Embodiment 1, the elastic modulus E1 of edge 11a is larger than the elastic modulus E2 of edge l ib The reason is slightly smaller. Therefore, detailed description is omitted.
- the vertical amplitude of the diaphragm 3 is also substantially symmetrical in the vertical direction, and distortion in the speaker 20 is reduced.
- the largest edge 4 of the planar shape is thin and lightweight, the vibration part of the speaker 20 can be easily lightened. The speaker 20 with high driving efficiency can be obtained.
- edge l id has two corrugated shapes by having two second edge protrusions 21d (hereinafter referred to as protrusions 21d) and one fourth edge protrusion 21f (hereinafter referred to as protrusion 21f). It has a cross-sectional shape.
- the protrusion 21f protrudes in the direction of the diaphragm 3, and the protrusion 21d extends in the opposite direction of the diaphragm 3. Protruding.
- the edge l id is formed using a foamed urethane resin or a material such as foamed rubber, SBR rubber, or cloth so as not to apply a large movable load to the diaphragm 3.
- the damper 10b and the edge l id constitute a second combined body 12d.
- the edge 11a and the edge l id are fixed to the frame 5 in a state of being integrated through the spacer 31.
- the edge l id has one protrusion 21f that protrudes upward in FIG. 5, that is, in the direction of the diaphragm 3, and downward of FIG. 5, that is, opposite to the diaphragm 3. And two protruding portions 21d protruding in the direction.
- it is deformed downward in FIG. 5, that is, in the opposite direction of the diaphragm 3, and on the contrary, it is difficult to deform upward in FIG. 5, that is, in the direction of the diaphragm 3. Therefore, by combining the edge 11a, the edge l id, and the force as shown in FIG. 5, the magnitude of the vertical load of the edge 11a and the magnitude of the vertical load of the edge l id are substantially the same.
- the elastic modulus E1 of the edge 11a is slightly smaller than the elastic modulus E2 of the edge l id.
- the edge 11a is slightly softer than the edge id.
- the elastic modulus of the edge 11a El force
- the elastic modulus E1 of the edge l id is slightly smaller than the elastic modulus E2 of the edge l id, as explained in the first embodiment, the elastic modulus E1 of the edge 11a is larger than the elastic modulus E2 of the edge l ib. The reason is slightly smaller. Therefore, detailed description is omitted.
- the vertical amplitude of the diaphragm 3 is substantially symmetric in the vertical direction, and distortion in the speaker 20 is reduced. Furthermore, since the edge 4 having the largest planar shape is thin and lightweight, the vibration part of the speaker 20 can be easily lightened. The speaker 20 with high driving efficiency can be obtained.
- speaker 20 shown in FIG. 6 is provided with edge 11c and edge l id instead of edge 11a and edge l ib of speaker 20 according to the first embodiment.
- the damper 10a and the edge 11c constitute a first combined body 12c.
- the damper 10b and the edge l id constitute a second combined body 12d. Note that the edge 11c and the edge l id are fixed to the frame 5 in a state of being integrated via the spacer 31.
- the edge l id has one protrusion 21f protruding in the direction of the diaphragm 3, and a vibration. And two protruding portions 21d protruding in the opposite direction of the moving plate 3. As a result, it is deformed in the direction opposite to the diaphragm 3 and is not easily deformed in the direction opposite to the diaphragm 3.
- the edge 11c has two projecting portions 21c projecting in the direction of the diaphragm 3 and one projecting portion 21e projecting in the opposite direction of the diaphragm 3.
- the edge 11c, the edge l id, and the force as shown in FIG. 6 the magnitude of the vertical load of the edge 11c and the magnitude of the vertical load of the edge l id are substantially the same.
- the elastic modulus E1 of the edge 11c is slightly smaller than the elastic modulus E2 of the edge l id.
- the edge 11c is slightly softer than the edge id.
- the elastic modulus of the edge 11c El force The elastic modulus E1 of the edge l id is slightly smaller than the elastic modulus E2 of the edge l id, as explained in the first embodiment, the elastic modulus E1 of the edge 11a is larger than the elastic modulus E2 of the edge l ib. The reason is slightly smaller. Therefore, detailed description is omitted.
- the vertical amplitude of the diaphragm 3 is also substantially symmetrical in the vertical direction, and distortion in the speaker 20 is reduced. Furthermore, since the edge 4 having the largest planar shape is thin and lightweight, the vibration part of the speaker 20 can be easily lightened. The speaker 20 with high driving efficiency can be obtained.
- Embodiment 3 of the present invention will be described with reference to the drawings.
- the same components as those in Embodiments 1 and 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
- FIG. 7 is a cross-sectional view showing speaker 20 according to Embodiment 3 of the present invention.
- FIG. 8 is an enlarged cross-sectional view of a main part of the speaker 20 shown in FIG.
- the speaker 20 according to the third embodiment is different from the speaker 20 according to the first and second embodiments in the configuration of the first combined body 12a and the configuration of the second combined body 12b. It has the same configuration as Forms 1 and 2.
- the damper 10a and the damper 10b are fixed to the frame 5 in a state where the damper 10a and the damper 10b are joined together via the outer peripheral end partial force spacers 31.
- the height of the spacer 31 is L
- the damper 10a and the damper 10b are fixed to the frame 5 with a predetermined distance L.
- the inner peripheral end portion of the damper 10a is connected to the body 2 of the voice coil body 2 via an edge 1 la which is a separate body from the damper 10a. It is connected to the outer peripheral side of a.
- the inner peripheral end portion of the damper 10b is connected to the outer peripheral side of the main body 2a of the voice coil body 2 via an edge l ib that is a separate body from the damper 10b.
- the edges l la and l ib are connected to the magnetic circuit 1 side with respect to the main body 2a rather than the fixed portion 3a of the diaphragm 3.
- the edge 11a and the edge l ib are connected to the main body 2a with a predetermined distance L.
- the damper 10a and the edge 11a constitute a first combined body 12a.
- the damper 10b and the edge 11b constitute a second combined body 12b.
- the distance between the damper 10a and the damper 10b and the distance between the edge 11a and the edge l ib are both configured to have a predetermined distance L.
- the distance between the damper 10a and the damper 10b and the distance between the edge 11a and the edge l ib are not necessarily limited to being equal.
- the shape may be determined in consideration of the shapes of the dampers 10a and 10b, the edges lla, lib, the spacer 31 and the like.
- the speaker 20 according to the third embodiment reacts to the magnetic field formed in the magnetic gap 8 when an audio signal is input to the coil 2b.
- the voice coil body 2 moves up and down.
- the diaphragm 3 vibrates and a sound is emitted from the speaker 20.
- the edges l la and l ib at the inner peripheral ends of the dampers 10a and 10b distortion of sound emitted from the speaker 20 is suppressed, and the driving efficiency of the speaker 20 is further increased.
- the light weight of the vibration part of the speaker 20 can be easily achieved, and the speaker 20 can be obtained with high driving efficiency even with respect to the reproduction speaker 20 with medium to high sound.
- FIG. 9 is an enlarged cross-sectional view of a main part showing another example of speaker 20 according to Embodiment 3 of the present invention.
- the speaker 20 shown in FIG. 9 differs from the speaker 20 shown in FIGS. 7 and 8 in the configuration of edges l la and l ib, that is, the configuration of the coupling bodies 12a and 12b, and the other parts are the same in configuration.
- the speaker 20 shown in FIG. 9 has a configuration in which the protruding portion 21a of the edge 11a protrudes in the direction opposite to the diaphragm 3, and the protruding portion 21b of the edge rib protrudes in the direction of the diaphragm 3.
- the damper 10a and the edge 11a constitute a first combined body 12a
- the damper 10b and the edge l ib constitute a second combined body 12b.
- the damper 10a and the damper 10b are fixed to the frame 5 in an integrated state via the spacer 31. It is.
- the speaker 20 shown in FIG. 9 is also provided with the speaker 20 in which the distortion of the sound emitted from the speaker 20 is suppressed and the driving efficiency of the speaker 20 is further improved. Similarly, since the weight of the vibration part of the speaker 20 can be easily reduced, the driving efficiency is high and the speaker 20 can be obtained even with a medium / high sound reproduction spin force 20.
- Embodiment 4 of the present invention will be described below with reference to the drawings.
- the same components as those in Embodiments 1, 2, and 3 are denoted by the same reference numerals, and detailed description thereof is omitted.
- FIG. 10 is a cross-sectional view showing speaker 20 according to Embodiment 4 of the present invention.
- FIG. 11 is an enlarged cross-sectional view of a main part of the speaker 20 shown in FIG.
- the speaker 20 according to the fourth embodiment is different from the speaker 20 according to the first, second, and third embodiments in the configuration of the first combined body 12a and the second combined body 12b.
- the configuration is the same as that of the first embodiment.
- the speaker 20 shown in FIGS. 10 and 11 includes a third damper 10c (hereinafter referred to as a damper 10c) between the outer peripheral end portion of the edge 11a of the speaker 20 according to Embodiment 1 and the frame 5. Has been inserted. Similarly, a fourth damper 10d (hereinafter referred to as damper 10d) is inserted between the outer peripheral end portion of the edge l ib and the frame 5.
- the damper 10a, the edge 11a and the damper 10c constitute a first combined body 12a.
- the second combined body 12b is constituted by the damper 10b, the edge l ib and the damper 10d.
- damper 10c and the damper 10d are fixed to the frame 5 in a state of being integrated via the spacer 31.
- the dampers 10c and 10d have a ring-shaped corrugated plate structure, similar to the dampers 10a and 10b.
- the voice coil body 2 has a structure that expands and contracts in response to the vertical movement.
- the dampers 10c and 10d are made of foamed urethane resin or materials such as foamed rubber, SBR rubber, and cloth so as not to apply a large movable load to the diaphragm 3 like the dampers 10a and 10b. Has been.
- the dampers 10c and 10d are, like the dampers 10a and 10b, a third protrusion 22a that protrudes in the direction of the diaphragm 3, and a fourth protrusion that protrudes in the opposite direction to the third protrusion 22a. 22b and multiple It is the structure which has. Therefore, basically, the loads in the vertical direction of the dampers 10c and 10d are substantially the same.
- the basic operation, action and effect of the speaker 20 are the same as those of the first, second and third embodiments.
- the vertical amplitude of the diaphragm 3 is also substantially symmetrical in the vertical direction, and distortion in the speaker 20 is reduced.
- the edge 4 with the largest planar shape is thin and lightweight, so the vibration part of the speaker 20 can be easily lightened, and it can be driven even for the mid-high sound playback speaker 20. A highly efficient speaker 20 can be obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800008016A CN101341791B (zh) | 2006-05-10 | 2007-05-07 | 扬声器 |
EP07742885A EP1881734B1 (en) | 2006-05-10 | 2007-05-07 | Speaker |
US11/916,480 US8041068B2 (en) | 2006-05-10 | 2007-05-07 | Loudspeaker |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-131333 | 2006-05-10 | ||
JP2006-131332 | 2006-05-10 | ||
JP2006131332A JP4735406B2 (ja) | 2006-05-10 | 2006-05-10 | スピーカ |
JP2006131333A JP2007306203A (ja) | 2006-05-10 | 2006-05-10 | スピーカ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007129685A1 true WO2007129685A1 (ja) | 2007-11-15 |
Family
ID=38667794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/059450 WO2007129685A1 (ja) | 2006-05-10 | 2007-05-07 | スピーカ |
Country Status (4)
Country | Link |
---|---|
US (1) | US8041068B2 (ja) |
EP (1) | EP1881734B1 (ja) |
KR (1) | KR20080014879A (ja) |
WO (1) | WO2007129685A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101277551B (zh) * | 2008-05-05 | 2011-09-14 | 无锡杰夫电声有限公司 | 薄型扬声器定位支片结构 |
CN105764013A (zh) * | 2016-04-13 | 2016-07-13 | 巴士在线股份有限公司 | 一种金属弹波与支架注塑成型的扬声器结构及其生产工艺 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4735376B2 (ja) * | 2006-04-04 | 2011-07-27 | パナソニック株式会社 | スピーカ用ダンパーおよびこれを用いたスピーカ |
US8169947B2 (en) | 2007-12-05 | 2012-05-01 | Qualcomm Incorporated | Method and apparatus for data-centric multiplexing |
WO2009101813A1 (ja) | 2008-02-14 | 2009-08-20 | Panasonic Corporation | スピーカ、及び電子機器 |
TWI538530B (zh) * | 2011-12-13 | 2016-06-11 | speaker | |
US9426578B2 (en) * | 2011-12-20 | 2016-08-23 | Aac Acoustic Technologies (Shenzhen) Co., Ltd. | Electromagnetic transducer |
US9485586B2 (en) | 2013-03-15 | 2016-11-01 | Jeffery K Permanian | Speaker driver |
US9066179B2 (en) * | 2013-09-09 | 2015-06-23 | Sonos, Inc. | Loudspeaker assembly configuration |
KR102499257B1 (ko) * | 2017-10-20 | 2023-02-14 | 삼성전자주식회사 | 스피커 |
CN208369831U (zh) * | 2018-05-04 | 2019-01-11 | 惠州超声音响有限公司 | 一种对称双折环的扬声器 |
CN108966095B (zh) * | 2018-08-07 | 2024-06-18 | 张永春 | 扬声器单元及扬声器装置 |
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JPS62109596A (ja) * | 1985-11-07 | 1987-05-20 | 松下電器産業株式会社 | 遠心脱水洗濯機 |
JPH02133097U (ja) * | 1989-04-07 | 1990-11-05 | ||
JPH09284890A (ja) | 1996-04-15 | 1997-10-31 | Sony Corp | スピーカ装置 |
JP2003199192A (ja) * | 2001-10-16 | 2003-07-11 | Matsushita Electric Ind Co Ltd | スピーカ用ダンパー及びスピーカ |
Family Cites Families (12)
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JPS5649188Y2 (ja) | 1973-06-14 | 1981-11-17 | ||
JPS5737582Y2 (ja) | 1978-09-29 | 1982-08-18 | ||
JPS5866797U (ja) | 1981-10-27 | 1983-05-06 | パイオニア株式会社 | スピ−カ用ダンパ支持装置 |
JPH02133097A (ja) | 1988-11-14 | 1990-05-22 | Toshiba Corp | 同期電動機の制御装置 |
JPH03247099A (ja) | 1990-02-23 | 1991-11-05 | Sharp Corp | スピーカ |
EP0843949B1 (en) | 1996-05-31 | 2002-10-02 | Koninklijke Philips Electronics N.V. | Electrodynamic loudspeaker and system comprising the loudspeaker |
WO1999004597A2 (en) * | 1997-07-18 | 1999-01-28 | Mackie Designs Inc. | Pistonic motion, large excursion passive radiator |
WO2002102113A1 (fr) * | 2001-06-11 | 2002-12-19 | Matsushita Electric Industrial Co., Ltd. | Haut parleur |
US6655495B2 (en) * | 2001-10-16 | 2003-12-02 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker damper and loudspeaker |
JP3651455B2 (ja) | 2002-04-15 | 2005-05-25 | 松下電器産業株式会社 | スピーカ |
JP3651470B2 (ja) * | 2003-03-31 | 2005-05-25 | 松下電器産業株式会社 | スピーカ |
JP4533465B2 (ja) | 2007-06-01 | 2010-09-01 | 成幸 五十嵐 | 空調可能な植栽用鉢 |
-
2007
- 2007-05-07 KR KR1020077029765A patent/KR20080014879A/ko not_active Application Discontinuation
- 2007-05-07 US US11/916,480 patent/US8041068B2/en active Active
- 2007-05-07 WO PCT/JP2007/059450 patent/WO2007129685A1/ja active Application Filing
- 2007-05-07 EP EP07742885A patent/EP1881734B1/en not_active Expired - Fee Related
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JPS62109596A (ja) * | 1985-11-07 | 1987-05-20 | 松下電器産業株式会社 | 遠心脱水洗濯機 |
JPH02133097U (ja) * | 1989-04-07 | 1990-11-05 | ||
JPH09284890A (ja) | 1996-04-15 | 1997-10-31 | Sony Corp | スピーカ装置 |
JP2003199192A (ja) * | 2001-10-16 | 2003-07-11 | Matsushita Electric Ind Co Ltd | スピーカ用ダンパー及びスピーカ |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101277551B (zh) * | 2008-05-05 | 2011-09-14 | 无锡杰夫电声有限公司 | 薄型扬声器定位支片结构 |
CN105764013A (zh) * | 2016-04-13 | 2016-07-13 | 巴士在线股份有限公司 | 一种金属弹波与支架注塑成型的扬声器结构及其生产工艺 |
Also Published As
Publication number | Publication date |
---|---|
KR20080014879A (ko) | 2008-02-14 |
EP1881734B1 (en) | 2012-04-11 |
US20090116680A1 (en) | 2009-05-07 |
EP1881734A1 (en) | 2008-01-23 |
EP1881734A4 (en) | 2010-07-21 |
US8041068B2 (en) | 2011-10-18 |
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