JPS606598B2 - Diaphragm with voice coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm with a voice coil that is applied as a sound emitting plate or a sound receiving plate to a power-driven electroacoustic transducer.

Conventionally, this type of voice coil-equipped diaphragm is made by attaching a voice coil body having a configuration in which a voice coil is wound around a cylindrical body concentrically to a conical or dome-shaped diaphragm body obtained in advance. This configuration is widely used today.

Such a conventional diaphragm with a voice coil has a diaphragm body of 1
By having a structure in which the voice coil body is composed of two diaphragm parts, the voice coil body is made up of one voice coil part, and one voice coil part is attached to the one diaphragm part, the conductive centralized drive Although it is called a diaphragm based on the method, it is planned that the diaphragm functions as a diaphragm by dividing the diaphragm into vibrations.

However, when a diaphragm performs its function as a diaphragm by performing divided vibrations, irregular phase shifts or unnecessary vibrations are likely to occur in the divided vibrations, and therefore it is difficult to function as a diaphragm. There were certain limits to how well the functions could be performed with high fidelity. This is especially true because the diaphragm has a conical or dome shape that is susceptible to diffraction and cavity resonance phenomena, and cannot be stretched over a flat surface. In addition, in the case of the conventional diaphragm with a voice coil described above, in order to obtain it, a process of attaching the voice coil body to the diaphragm body is required, and in that process, the voice coil body is positioned on the diaphragm body with high precision. It was difficult to install.

Therefore, the above-mentioned conventional diaphragm with voice coil has the disadvantage that there is a certain limit to how well it can be produced with high fidelity and good productivity. Ta.

Therefore, the present invention aims to propose a novel diaphragm with a voice coil that can effectively avoid the above-mentioned drawbacks, which will become clear from the detailed description below with reference to the drawings.

1 and 2 show an example of a diaphragm with a voice coil according to the present invention, designated by reference numeral 1, and consisting of a diaphragm body 2, a voice coil body 3, and a rigid body 4. FIG.

As is clear from reference to FIG. 3, the diaphragm main body 2 is composed of a plurality of, for example, four vibration slope sections A, , A2, A3, and A4, and the voice coil body is composed of voice coil sections B, , B2, B.
3 and &~Voice coil part Bi (i=1, 2,
3 and 4) consist of coil arrangement plate portions Di and Di2 which are opposed to each other or closely opposed to each other (in the figure, are opposed to each other) and are formed with voice coils Ei and Ei2 formed by printed wiring, respectively. 3 In this case, the diaphragm body 2 and the voice coil body 3
are diaphragm parts A, ~A4 and voice coil parts B, ~B4
However, the vibration slope part A, the coil arrangement plate part D, . , coil arrangement plate part D, 2, diaphragm part, coil arrangement plate part D2, , coil arrangement plate part D22, diaphragm part, coil arrangement plate 3 part D3
, , the coil arrangement plate part D32, the diaphragm part, the coil arrangement plate part D4, and the coil arrangement plate part D42 are connected and extended in this order, and the coil arrangement slope part D group is connected to the diaphragm part A, However, it includes a relatively flat surface Po, which can be a plane, and a line 4- perpendicular to this, and an equiangular interval (900) outwards around the line Lo. When considering successive planes P, , P2, P3, and P4 that can be maintained and extended orthogonally to the plane Po, the vibration slopes A, :A2; A3; and the planes P4, P, ;P, and P2: P2 and P3;
The voice coil sections B, B2, B3 and B4 extend between P3 and P4 and are sequentially arranged around the line - in that order, respectively, on one side of the plane Po. It has an aspect in which it is arranged on P3 and P4, and in this aspect, as shown in FIG. Straight lines X, o, X2o, X■, and x4 that can be extended outward at equal angular intervals (90o) around the center ○. and straight line X,
o; OX2o: X3o;
. A straight line X, which can be extended parallel to . and ×, ;X2, and ×
When considering 22; × illusion and ×32; and ×4 and ×42, the lines ×42 and ×, . Along the tan line connecting the intersection Q4, and the intersection Q,2 of the lines The side F2 and the intersection Q that can be extended between the intersections Q, 2 and Q23 along the line connecting ×22 and the intersection Q23 of the X illusion
Along the line connecting 23 and the intersection Q34 of line x spot and x4, the side part F3 can be extended by 0 between the intersections Q23 and Q34.
along the line connecting the intersections Q34 and Q4, and the intersection Q
34 and Q. A cut hole 6 having an inner circumferential surface consisting of a side F4 that can be extended between, and a line x, with the side F of the cut hole 6 as one side edge. Along the line ×,. and ×, the above-mentioned voice coil mechanism extending with a width of 2,
Line x 2 with side F2 of cut hole 6 as one edge. Line x along
A part B'2 which becomes the voice coil part & described above which is extended with a width between phantom and The above-mentioned voice coil section & section B'3 which is extended by a width between x32
And, with the side part 4 of the cut hole 6 as one side green, line x 4. The above-mentioned voice coil gourd lamp 4 is formed by extending along lines x4 and x42 with a width between the lines x4 and x42, and the parts B'4 and B,
Between the lines ×42 and ×, . Upper folding lines ○42 and G, . The above-mentioned vibrating slope is extended through the lines G, 2 and G2 on the lines x, 2 and x2, between the part A', which becomes the vibrating slope, and the parts B' and B'2. A line x 22 is drawn between the extended portion A'2 which becomes the diaphragm portion and the portions B'2 and B'3.
and ×3, the line ×32 and ×4, upper The part A that becomes the diaphragm part mentioned above and extends through the folding lines G32 and 04.
'4, and part B' is a line x. Upper folding line ○, o
The above-mentioned coil arrangement plate parts ○ and . and D
, 2 is the part 〇,. It consists of 〇, 2, and part B'2 is line x 2. The above-mentioned coil arrangement plate portions D2 and D22 are juxtaposed with the upper folding line G in between, and D′2 and D′2.
2, part B'3 consists of the above-mentioned coil arrangement plate part P3 which is juxtaposed across the folding line G above line '4 is line x 4.
The above-mentioned coil arrangement plate portion D4, which is juxtaposed across the upper folding line G, and the sheet-like body 5 consisting of the portions D'4 and D'42 that become the D image are placed on the above-mentioned folding lines G, o, and G. 、． and ○
, 2; ○2o, G2, and G22: G's, G3, and G
It is obtained by bending along the lines ○4o, G4, and G42. Further, the voice coil portion B of the voice coil body 3, the coil arrangement plate portion D, . Voice coils E, . When viewed on the sheet-like body 5 in FIG. 4, the coil arrangement Itabe-cho, . The part 〇,. Fold curve ○4 on top.

The portions e, . , and the folding line G, . Its folding line G, . New, which can be extended along. The voice coil E, 2 formed on the coil arrangement plate portion D, 2 has a spiral configuration with a coil arrangement plate portion D, 2. ',2
Folding line G at the top. New history that can be extended along the folding line G, o on the side, 2, and the folding line ○, and the folding line ○, 2 on the 2 side.
The voice coil E2 is formed on the coil arrangement slope P2 of the voice coil dissection 2, and has a similarly spirally formed structure with a part e extending along the female part.
Similarly, when looking at the sheet-like body 5, there is a folding line G2 at the top of the section ○'2. ○2 folding curves on the side. Part e2 that can be extended along
、． and a folding line ○2, and a folding line G2 on the side, and a new history 2, 2 that can be extended along the folding line G2, and are similarly formed in a spiral shape. Similarly, the voice coil E22, when viewed on the sheet-like body 5,
Fold curve G2 on part 〇22. Folding curve G2 on the side. It has a similarly spirally formed structure, with a part e22 that can be extended along the folded line ○22, and a part e that can be extended along the folded line ○22. The voice coil E formed on the coil arrangement slope D3 is
Similarly, when looking at the sheet-like body 5, there is a folding line ○3 on the side of the folding line G above the folding line D'. The part e3, which can be extended along the e3, . and the folding line ○3, the part that can be extended along the folding line GM on the side e3, 2
Similarly, the voice coil E32 formed on the coil arrangement plate part D32 has a similar spiral configuration. On the side of the folding line G, there is a rod 32 that can be extended along the folding line G3o, and on the side of the folding line G, there is a part 2 that can be extended along the folding line G, so that it similarly forms a spiral shape. The voice coil E4 is formed on the coil arrangement slope D4 of the coil section string. Similarly, the sheet-like body 5
Looking at the top, the autopsy is P'4, and the fold line is ○4 at the top. The coil has a spirally formed structure with a part e48 extending along the folding line ○4o on the side and a part e48 extending along the folding line 04 and the folding line ○4o on the side. Similarly, the voice coil E42 formed on the arrangement plate part ○42 has a folding line ○4 on the part D'42 when viewed on the sheet-like body 5. Prehistory 42 that can be extended along folding line G4o on the side, and folding line ○4
It has a spirally formed configuration with a drug history 42 extending along the length 2. Furthermore, voice coil E, . The starting ends of the voice coils E, . The terminal ends of the voice coils E, 2 and the starting ends of the voice coils E, 2 are connected to the sections D, . and terminal portions h, . and h
．． Wiring portions k and 2 are extended onto the back surface of the part between the terminal ends of coils E and 2 and the starting ends of coil E2, and the terminal ends of coils E2 and the starting ends of coil E2 are respectively connected to part D2. , and terminal node pair 2 formed on D22, and h22
A wiring section K extends between the terminal end of coil E22 and the starting end of coil E3, and extends on the back side of the section, and the terminal end of coil E3, and the starting end of coil E32 are connected to section D section and D32, respectively. Terminal agent ratio 3 formed on top, and extended to h spots,
A section A4 between the terminal end of coil E32 and the starting end of coil E4.
The wiring section K box that can be extended on the back side of the coil E4,
The terminal end of the coil E42 and the starting end of the coil E42 extend to the terminals D4 and D formed on the bamboo grass, respectively, and the end of the coil E extends to the back side of the coil A through a wiring part K4. The terminal section K2 extends to a terminal section K2 formed on the back surface of the terminal section.

In this case, the terminal agent. and h, 2; h2, and h kō; h
3, and h32; and L and L2 are parts D, . and D,2; D2. and D22; ○3, and D32; and D
4, and 42 at mutually opposing positions, and the terminal portions h, . and h,2; h2. and h honey; h3, and h32: and h4, and L2 are respectively part D, . and D, 2
: D2, and D22: D3, and D32; and D4, and D are connected to the terminals h, . and h, 2; h illusion and h22: h
and h32: a connecting line or a connecting piece m that can be penetrated and extended (for example, by eyelet means) at the positions of and ~ and h42,
m2; m3 and m4 are interconnected (e.g. by soldering means). Therefore, when a power supply is connected between terminals K and K2, coils E, . front heron,. 2 and coil E, part e of 2; part ea of coil E2, and part e of coil E22; coil E3. new parts 3, 2 and part e32 of coil E32; and part e4 of coil E4, . A current flows in the first direction toward the face as seen from the line Lo, and the coils E, . Part e, . , and part e of coil E, 2, phantom; coil E phantom part e2, 2 and capital of coil E22 e222: coil E phantom part e skin and history 32 of coil E32,; and part e4 of coil E4,
, 2 and the portion e422 of the coil E42, a current is made to flow in a weak direction in a second direction opposite to the first direction. The rigid body 4 is made up of a foamed resin layer 7 arranged in a continuous manner on the side opposite to the voice coil body 3 of the diaphragm parts A, ~A4, which are sequentially arranged on the surface Po of the diaphragm body 2. . The configuration of an example of the diaphragm with a voice coil according to the present invention has been clarified above, but next, in order to make the diaphragm with a voice coil easier to understand, we will introduce an electrodynamic type diaphragm using the diaphragm with a voice coil. An example of an electroacoustic transducer will be described with reference to FIGS. 5 and 6. The electroacoustic transducer is composed of the voice coil-equipped diaphragm 1 and the magnetic circuit device 10 described above in FIGS. 1 and 2.

As is clear from reference to FIGS. 7, 8, and 9, the magnetic circuit device 10 includes magnet devices sequentially arranged on a substrate 11 at equal angular intervals (9 mm) around the center thereof. M,
, M2, M3 and M4. In this case, the magnet device Mi
has a structure in which a magnetic yoke plate 12, a magnet plate 13, and a magnetic yoke plate 14 are laminated in this order on a substrate 11. Also, around the straight line L'o that extends perpendicularly to the plate surface of the substrate 11, there are three straight lines L'o that are arranged at equal angular intervals (900 mm).
) planes P', , P'2, P'3 and P that can be extended while maintaining
4, the magnetic yoke plates 12 of the magnet devices M and M2 have end surfaces Q, .
and Q2, and the magnetic yoke plate 14 is also in the plane P'
, end faces R extending parallel to each other with 3 in between. and R22
The magnet device base and the magnetic yoke plate 12 of M3 have end faces Q22 and Q2 that extend parallel to each other across the plane '2'.
Similarly, the magnetic yoke plate 14 has end surfaces R22 and R32 that extend parallel to each other across the plane P'2, and the magnetic yoke plate 12 of the four-layer magnet system M3 and M4 has the plane P'3. The magnetic yoke plate 14 has end surfaces Q3 and Q43 that extend parallel to each other across the plane P'3, and R33 and R crab that extend parallel to each other across the plane P'3. The plate 12 has end surfaces Q and Q, 4 that extend parallel to each other across the plane P'4, and the magnetic yoke plate 14 has end surfaces R44 and R, 4 that extend parallel to each other across the plane P'4. has. Further, the magnet plates 13 of the magnet device M have S and N poles on the magnetic yoke plates 12 and 14 sides, respectively, and the magnet plates 13 of the magnet devices M2; The magnet device M. is composed of magnetic plates having S pole; S and N pole; and N and S pole. The magnet plates 13 are connected to the end surfaces Q, . and R,
．． ; and having end faces corresponding to Q,4 and R,4,
Their end faces are end faces Q, . and R, . ; and Q, 4 and R
．． 4, and the magnet plate 13 of the magnet device M2 also has end faces corresponding to the end faces Q2, R2, and Q22 and R22 of the magnetic yoke plates 12 and 1 and 4; and R2; and Q22 and R22, and the magnet plate 13 of the magnet device M3 also has end surfaces Q32 and R32 of the magnetic yoke plates 12 and 14; and Q3 and R
33, but those end faces are end faces Q2
and R spots: exists inside Q3 and R33, and the magnet plate 13 of the magnet device M4 also has end faces Q3 and R43 of the magnetic yoke plates 12 and 14; and Q44 and R44; , Q44 and R44. Thus, the voice coil-equipped diaphragm 1 connects the voice coil parts B, , B2, &, and & of the voice coil body 3 between the magnet devices M and M2 of the magnetic circuit device 10, between the ground and M3, and between M3 and others. The magnetic circuit device 101 is positioned with respect to the magnetic circuit device 101 in the relationship between the magnetic circuit device 101 and the magnetic circuit device 101.

As described above, an example configuration of an electrodynamic electroacoustic transducer using the voice coil-equipped diaphragm 1 described above has been clarified in FIGS. 1 and 2. Coils E, . Part e, . , and part e of coil E, 2,
2 is the magnetic yoke 1 of the magnet device M of the magnetic circuit device 10;
2 end face Q, . and the end face Q2 of the magnetic yoke 12 of the magnet device M2, the coils E, . Part e, . 2 and coil E
, 2, the end face R of the magnetic yoke plate 14 of the magnet device M, . and the end face R2 of the magnetic yoke plate 14 of the magnet device M2; between the coil E in the voice coil section & the phantom city e2, . The part e22 of the coil E22 is between the end face Q22 of the magnetic yoke plate 12 at the magnet device ground and the magnetic yoke Q32 of the magnet device M3, and the part e22 of the coil E2 and the part e22 of the coil E2 are connected to the magnetic field of the magnet device ground. End face R of yoke 14
22 and the end south exit spot of the magnetic yoke 14 of the magnet device M2; the phantom portion e of the coil E in the voice coil portion & and the portion e of the coil E32 are the magnetic yoke 12 of the magnet device M3.
Between the end surface Q33 of the magnetic yoke 12 of the magnet device M4 and the end surface Q43 of the magnetic yoke 12 of the magnet device M4, the agent rods 3, 2 of the coil E3 and the uneven portion e32 of the coil E
and between the end face R flute of the magnetic yoke 14 of the magnet device M; new 4, . And the part e side of the coil E42Z is the magnetic yoke 1 of the magnet device M4.
2 and the end surface Q4 of the magnetic yoke of the magnet device M,
Between the ends of the magnetic yoke 14 of the magnet device M, the portions e4, 2 of the coil E4 and the capital e42 of the coil E group are arranged between the end surface R44 of the magnetic yoke 14 of the magnet device M and the end surface R, 4 of the magnetic yoke 14 of the magnet device M, respectively. Also, the magnetic flux from the magnet plates 13 of the magnet devices M and M2 is applied to the end surfaces Q, . and Q2, between the end surface Q2, Q from the side
、． On the side, the end surface R, . and R2, between the end surfaces R, . From the R2 side, the magnetic flux from the magnet plates 13 of the magnet devices M2 and M3 flows from the end surface Q22 side to the end surface 2Q2 side between the end surface Q22 and the Q rudder, and from the end surface R2 between the end surfaces R22 and R.
From the side to the end surface R22 side, the magnetic flux from the magnet plate 13 of the magnet devices M3 and M4 is applied to the end surface Q3 between the end surface Q unevenness and Q3.
The magnetic flux from the magnet plates 213 of the magnet devices M4 and M is transferred between the end surfaces Q44 and between Q and 4 from the end surface R33 side to the end surface R43 side from the end surface R33 side to the end surface R43 side. From the end surface Q, 4 side, end surface R44 and R,
Flows from end surface R, 4 side U to end surface R44 side between 4,
Furthermore, when power is connected between the terminals K and K2 of the voice coil-equipped diaphragm 1, the coils E, . part e
、． 2 and 3 coil E, 2 new, 22; coil E2,
Part e2, . And new 2nd illusion of coil E22; coil E3
, new history 322 of the rods 3, 2 and coil E32; and part e4 of coil E4, . and prehistory 42 of coil E42,
, a current flows in the first direction in all directions, and the coils E, . The drug rod. , and the part e of coil E, 2: the division of coil E2, and the division of coil E22, 222; the division of coil E3, 3, . and part e3a of coil E32; and coil E
4, the terminal portions K and K2 of the diaphragm 1 with a voice coil are caused to flow in the cervical direction in the second direction opposite to the i-th direction in the portion e4, 2 and the cup of the coil E42. If an electrical signal is supplied between them, the voice coil section B of the voice coil body 3 of the diaphragm 1 vibrates with a piston motion in the same phase according to the electrical signal, and therefore the vibration Sakamoto The body 2 vibrates in response to an electrical signal, and acoustic radiation is obtained from this, and conversely, when sound pressure is applied to the diaphragm 1 from its rigid body 4, the diaphragm 1 vibrates with piston motion in response. In response to this, the voice coil sections B, .

According to the diaphragm 1 with a voice coil according to the present invention described above in FIGS. The diaphragm 1 has a diaphragm main body 2 consisting of a plurality of diaphragm sections A, and a voice coil body 3 consisting of a plurality of voice coil sections B. ~ B4, it can be said that the frequency is a vibration plate based on the continuous type distributed drive system, which is distinguished from the conventional conductive type concentrated drive system diaphragm mentioned at the beginning.

Therefore, the voice coil-equipped diaphragm 1 according to the present invention does not perform its function as a diaphragm by vibrating in divided parts like the conventional diaphragm with a concentrated drive system, but by making a piston movement as a whole. It functions as a plate, and therefore the function as a diaphragm can be achieved with high fidelity over a wide range. This is even more so since the plurality of diaphragms A, -A4 of the diaphragm body 2 extend on a common flat surface. Further, according to the diaphragm 1 with a voice coil according to the present invention, since it has the rigid body 4 arranged on the diaphragm main body 2, the vibration slope main body 2 is
This can effectively suppress harmful parasitic vibrations.

Furthermore, according to the voice coil-equipped diaphragm 1 according to the present invention, the vibration slope main body 1 and the voice coil body 3 are connected to the voice coils E, . and its voice coil E, which becomes E, 2 to E4, and E42.
、． The diaphragm body 1 and the voice coil body 3 can be easily obtained by preparing the sheet-like body 5 in advance and bending it. In addition, they can be easily obtained with high precision positioning.

The rigid body 4 can be easily placed on the diaphragm body 1 after the diaphragm body 1 and the voice coil body 3 are obtained by bending. Therefore, the voice coil-equipped diaphragm according to the present invention has a great feature in that it has high fidelity and can be obtained with good productivity.

In the above description, the voice coil portion Bi of the voice coil body 3
The voice coil Ei formed on the coil arrangement plate Di, is located along the folding line Gi when viewed on the sheet-like body 5 in FIG.
The portion ei, which can be extended along the folding line Gio on the o side, and the folding line G;, the part ei, 2 that can be extended along the folding line Gi,
, and the voice coil E:2 formed on the coil arrangement plate D; 10, which corresponds to FIG. 2, although a detailed explanation thereof will be omitted. And as shown in FIG. 11, which corresponds to FIG. 4, as seen in FIG. - part' part D3,'
Part D32' Part A E Part D4, 'Part D42' Part A
,′-part D,. ' through the voice coils E, . and E, 2; E illusion and E22; E3, and E32: and E4
, and E42 is part e, . 2 and e, illusion: e illusion, and e2
2; e3, 2 and e32,; and e4, . and e422
has part e, . , and e,22: e2,2 and e2
2,;e3,. and e group; and e4, 2, and e side have a configuration in which they do not have the same configuration, so that the voice coil body 3 may have a configuration in which the connection wire or connection piece m, ~ blood is omitted. It is something to be boiled down to.

Similarly, although detailed explanation is omitted, as shown in FIG. 12 corresponding to FIG. 2 and FIG. 13 corresponding to FIG. 4,
As seen in FIG. 13, one printed wiring extends, for example, from the coil arrangement plate part D, 2' through part D2 and part A2' to part D, 2'. Next is Miyako D, . ′
, thereby extending part A,'part D42'part A,'
Through section D, . ' Repeat the process of extending from part D3, for example, from part D3 to part D.
22' Repeating the process of extending through part A3' to part D3', then extending to part D3', passing through part D4 and part A4 to part D32. 4, the voice coil E,
．． and E, 2; E2, and E22; E3, and E32;
and E4, and E42 are parts e, . 2 and e, Shigeru; e illusion 2
and e22; e3,2 and e322: and e4,2 and e422 have a thigh e mountain and e,2,; e2, . and e22,;e3, . and e beard; and e4, . and side e has a configuration that does not exist.
,2', Part A2'"Part○2,', Part D22', Part 8
The structure is such that the magnetic circuit device 10 is connected to the 9th part D3 and 3 with wirings extended to the surfaces of the parts D3 and D3,'.
As shown in FIG. 14 corresponding to FIG.
By connecting the four magnetic yoke plates 12 to each other, it is possible to have a configuration in which the substrate 11 is omitted.

Furthermore, in the above description, the case where the rigid body 4 attached to the vibrating slope body 2 is made of the foamed resin material layer 7 has been described. It is also possible to use a thin film 22 made of tension-expanded material, or a thick film 25 with corrugations 24 formed on the peripheral edge that can be stretched over a frame 23, as shown in FIG. 16, which corresponds to FIG. It is also possible to do this.

Furthermore, in the above description, the plurality of diaphragms 0 part A of the diaphragm main body 2,
Although the case where the voice coil parts B to B4 of the voice coil body 3 are also arranged in a radial manner has been described, a detailed explanation thereof will be omitted, but as shown in FIG.
As shown in FIGS. 18 and 19, the diaphragm section,...
....... are arranged sequentially in a straight line on a flat surface, and accordingly, the voice coil lights, , B, B3... of the voice coil body 3 are also sequentially arranged in a straight line. It is also possible to have a configuration in which they are arranged on a line.

However, in this case, the voice coils E, . and E, 27 E2, and E22...... have a configuration similar to that in Figure 13, as shown in Figure 20, which corresponds to Figure 3, but as shown in ~ Figure 21. It is also possible to have a configuration in which it is formed as follows. Furthermore, the 18th
When constructing an electrodynamic electroacoustic transducer using the voice coil-equipped diaphragm 1 described above in FIGS. It is sufficient to use a structure in which the magnetic yoke plates 12 are sequentially arranged in an intersecting manner.

Further, in the above description, each of the diaphragm portions A, A2, . In some cases, it is also possible to provide a cut hole in each of the diaphragm parts A, , A2, . Various other modifications may be made without departing from the spirit of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing an example of a diaphragm with a voice coil according to the present invention, FIG. 2 is a sectional view thereof, and FIG. A perspective view showing the diaphragm body and voice coil body used,
FIG. 4 is an exploded rear view, FIG. 5 is a schematic perspective view showing an example of an electrodynamic electroacoustic transducer constructed using the diaphragm with voice coil shown in FIG. 1, and FIG. Its sectional view, FIG. 7, is a schematic perspective view showing the magnetic circuit device used in the dew-type electroacoustic transducer shown in FIG. 5, and FIGS.
The figures are respectively a plan view and a cross-sectional view, and FIG. 10 is a schematic cross-sectional view showing another example of a diaphragm with a voice coil according to the present invention.
FIG. 11 is an exploded rear view of the diaphragm main body and voice coil body used therein, FIG. 12 is a schematic cross-sectional view showing still another example of the diaphragm with voice coil according to the present invention, and FIG.
The figure shows an exploded rear view of the diaphragm body and voice coil body used therein, and FIG. 14 shows an electrodynamic electroacoustic transducer that can be used in an electrodynamic electroacoustic transducer constructed using the vibration plate with voice coil shown in FIG. 12. A first schematic cross-sectional view showing an example of a magnetic circuit device.
5 and 16 are schematic cross-sectional views showing other examples of the diaphragm with a voice coil according to the present invention, and FIG. 17 is a schematic cross-sectional view showing still another example of the diaphragm with a voice coil according to the present invention. A plan view, FIGS. 18 and 19 are cross-sectional views and vertical cross-sectional views thereof, and FIG. 20 is a developed view of the diaphragm body and voice coil body used in the diaphragm with voice coil shown in FIG. 17. Fig. 21 is a developed view showing another example of the vibration slope main body and voice coil body, and Fig. 22 is a lightning type constructed using the diaphragm with voice coil shown in Figs. 17 to 19. FIG. 2 is a schematic cross-sectional view showing an example of an electroacoustic transducer.

In the figure, 1 is a diaphragm with a voice coil, 2 is a vibration slope body, 3 is a voice coil body, 4 is a rigid body, A,, A2...
is the diaphragm section, B,, & is the voice coil section, E, . and E
, 2, E2, and E2... are voice coils, D, . and D, 2, D2, and D Shigeru……
5 is a coil arrangement slope, 5 is a sheet-like body, 7 is a foamed resin material layer, 21 and 23 are frames, 22 is a thin film, 24 is a corrugation, and 25 is a thick film.

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 14 Figure 15 Figure 12 Figure 13 Figure 16 Figure 17 Figure 18 Figure 19 figure .

N bran figure N vertical Figure Z

Claims (1)

[Claims] 1. A diaphragm body consisting of a plurality of diaphragm sections A_1, A_2, A_3... and a plurality of voice coil sections B_1, B_2.
, B_3 . Consisting of voice coil wiring board parts D_i_1 and D_i_2 that are closely opposed to each other, the diaphragm main body and the voice coil body are connected to the voice coil E_1.
_1 and E_1_2, E_2_1 and E_2_2, E_
By bending the sheet-shaped body formed with 3_1 and E_3_2..., the plurality of diaphragm parts A_1, A_2, A_
3... and voice coil sections B_1, B_2, B_3...
are diaphragm part A_1, coil arrangement plate part D_1_1, coil arrangement plate part D_1_2, diaphragm part A_2, coil arrangement plate part D_2_1, coil arrangement plate part D_2_2, diaphragm part A_
3. Coil arrangement plate part D_3_1, coil arrangement plate part D_3
The plurality of diaphragm portions A_1, A_2, A_3... are sequentially arranged in that order on a common surface P_0 common to them; A plurality of planes P_1, P_2, P_3... in which the plurality of voice coil parts B_1, B_2, B_3... are sequentially arranged on one side of the common plane P_0 and intersect with the common plane P_0.
...a diaphragm with a coil, characterized in that the diaphragm is formed in such a manner that the diaphragm is disposed on top of the diaphragm body, and a layer or membrane-like rigid body is attached to the side of the diaphragm body opposite to the voice coil body. . 2. The diaphragm with a voice coil as set forth in claim 1, wherein the rigid body is made of a foamed resin layer. 3. The diaphragm with a voice coil as set forth in claim 1, wherein the rigid body is made of a thin film that can be stretched over a frame. 4. A diaphragm with a voice coil as set forth in claim 1, characterized in that corrugations are formed on the peripheral edge of the rigid body that can be stretched over a frame.