JPH0574096U - Speaker - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the work process and improve reliability. [Structure] Coil bobbin 9 has projecting pieces 9a, 9 on the upper edge thereof.
b, and these are inserted holes 11c and 11d of the diaphragm 11.
The voice coil 10 at the beginning 10a.
And the end portion 10b from the insertion holes 11c and 11d to the diaphragm 1
After being pulled out to the surface side of No. 1, the ends of the lead-out lead wires 13 and 14 were soldered with the start end 10a and the end 10b of the voice coil 10 sandwiched between the protruding pieces 9a and 9b. [Effect] The connection point between the start end portion 10a and the end portion 10b of the voice coil 10 and the end portions of the lead-out lead wires 13 and 14 is outside the very narrow gap formed by the center pole 1 and the top plate 6 in FIG. Therefore, it is completely eliminated that the connecting portion comes into contact with the center pole 1 or the top plate 6 when the voice coil 10 is driven.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a speaker capable of appropriately and easily connecting a voice coil and a lead wire.

[0002]

[Prior Art]

 In recent years, dome speakers have been widely used in high-fidelity speaker systems. This is also because the diaphragm molding technology has improved, but it has the advantages of a wide reproduction band, good directivity characteristics, transient characteristics, sound quality, etc. even though the conversion efficiency is not so good. In addition, the dome speaker is often used as a mid-range or high-range speaker for a multi-way speaker system because it is difficult to make a large size structure and has good directional characteristics.

FIG. 1 shows a general structure of a dome speaker. As shown in the figure, a back chamber 4 for housing the sound absorbing material 3 made of glass wool or the like is fixed to the lower surface of the back plate 2 having the center pole 1. The back chamber 4 is used for a mid-range speaker whose lowest resonance frequency must be set relatively low.

A ring-shaped magnet 5 is fixed to the upper surface of the back plate 2. A ring-shaped top plate 6 is fixed to the upper surface of the magnet 5. A ring-shaped packing 7 is fixed to the upper surface of the top plate 6. A peripheral portion 8a of the equalizer 8 for flattening the high-frequency characteristics of the speaker is fixed to the upper surface of the packing 7.

A voice coil 10 wound around a coil bobbin 9 is arranged in a gap formed between the center pole 1 and the top plate 6. A dome-shaped diaphragm 11 is fixed to the peripheral edge of the coil bobbin 9. The diaphragm 11 is generally spherical in order to increase its strength. The diaphragm 11 is attached to the packing 7 via the edge 12 so as to be able to vibrate.

FIGS. 2 and 3 show how the voice coil 10 is attached to the coil bobbin 9 described above. In the figure, the voice coil 10 is wound in a ring shape in advance a predetermined number of times in accordance with the outer peripheral shape of the coil bobbin 9.

When the voice coil 10 is attached to the coil bobbin 9, the start end 10a of the voice coil 10 is folded back downward, and the folded back start end 10a is aligned with the joint 9a of the coil bobbin 9. Then, the voice coil 10 is fitted into the coil bobbin 9.

At this time, the lead-out lead wires 13 and 14 are brought into contact with the peripheral surface of the voice coil 10, and the lead-out lead wires 13 and 14 are fixed in an appropriate state by the fitted voice coil 10. In this state, the lead wires 13 and 14 and the voice coil 10 are fixed to the peripheral surface of the coil bobbin 9 with an adhesive. Further, at this time, the starting end portion 10a and the terminating end portion 10b of the voice coil 10 are in a state of being pulled out downward in FIG.

Then, the starting end portion 10 a and the terminating end portion 10 b of the voice coil 10 are soldered to the end portions of the lead wires 13 and 14.

[0010]

[Problems to be solved by the device]

 However, in the above-mentioned conventional dome speaker, the half-bonded portions for the start end 10a and the end 10b of the voice coil 10 at the ends of the lead-out lead wires 13, 14 are located at the lower end edge of the coil bobbin 9.

This is because the vibration characteristics of the coil bobbin 9 are disturbed if the starting end portion 10a and the terminating end portion 10b of the pulled-out voice coil 10 are shaken, so that the starting end portion 10a and the terminating end portion 10b are disturbed. This is because it is preferable to perform soldering at a position where the pullout length is the shortest.

Therefore, as can be seen from FIG. 1, since the coil bobbin 9 is arranged in the very narrow gap formed between the center pole 1 and the top plate 6, when the voice coil 10 is driven. When the coil bobbin 9 vibrates in the gap, it is highly possible that the connection points between the start end portion 10a and the end portion 10b of the voice coil 10 and the end portions of the lead wires 13 and 14 come into contact with the center pole 1 or the top plate 6. Become higher. For this reason, it is necessary to perform appropriate soldering while suppressing the amount of soldering and the amount of solder swelling at the connection point as much as possible, which not only requires skill but also requires many work steps, resulting in a decrease in workability. There is a problem that it ends up.

Further, when the lead-out lead wires 13 and 14 are sandwiched between the coil bobbin 9 and the voice coil 10, it is difficult to position the lead-out lead wires 13 and 14 with respect to the circumferential surface of the coil bobbin 9, and a positional shift occurs. In that case, there is also a problem that workability is significantly reduced because the work such as the need to correct the positional deviation is forced.

Further, since it is difficult to position the lead-out lead wires 13 and 14 between the coil bobbin 9 and the voice coil 10, poor electrical contact between the voice coil 10 and the lead-out lead wires 13 and 14 is caused. There was also a problem that the occurrence rate of defective products became high.

The present invention has been made in consideration of such circumstances, and simplifies the work process and improves reliability by appropriately and easily connecting the voice coil and the lead wire. An object of the present invention is to provide a speaker that can be designed.

[0016]

[Means for Solving the Problems]

 The invention according to claim 1 is a speaker for vibrating a diaphragm attached to a coil bobbin by driving a voice coil wound around a coil bobbin arranged in a gap formed by a center pole and a top plate, A protruding piece is provided on the upper edge of the coil bobbin, an insertion hole is formed in the diaphragm to insert the protruding piece, and the protruding piece is inserted into the insertion hole of the diaphragm to start the voice coil. And the rear end of the voice coil are pulled out from the insertion hole to the front side of the diaphragm, and the pulled out start end and rear end of the voice coil are sandwiched by the projecting piece and the lead wire. Is characterized by.

According to a second aspect of the present invention, the diaphragm attached to the coil bobbin is vibrated by driving the voice coil wound around the coil bobbin arranged in the gap formed by the center pole and the top plate. In the speaker, a slit is formed on the outer peripheral edge of the diaphragm, and the start end and the rear end of the voice coil are drawn from the slit to the front surface side of the diaphragm, and the start end and the end of the drawn voice coil are drawn. The rear end portion is sandwiched between the diaphragm and the lead wire.

[0018]

[Action]

 In the loudspeaker according to claim 1, the connection point between the leading end portion and the rear end portion of the voice coil and the lead wire is removed from the gap formed by the center pole and the top plate. The start end and the rear end of the voice coil are drawn out from the insertion hole to the front side of the diaphragm, and the start end and the rear end of the drawn voice coil are sandwiched by the projecting piece and the lead wire.

In the speaker according to the second aspect, the start end and the rear end of the voice coil are drawn out from the slit to the front surface side of the diaphragm, and the start end and the rear end of the drawn voice coil are drawn out together with the diaphragm. It is sandwiched by lead wires.

[0020]

【Example】

 Hereinafter, details of embodiments of the present invention will be described with reference to the drawings. In the drawings described below, parts common to those in FIGS. 2 and 3 are designated by the same reference numerals, and redundant description will be omitted.

FIG. 4 shows an embodiment of the speaker of the present invention, in which the coil bobbin 9 is provided with projecting pieces 9a and 9b at the upper edge thereof. Insertion holes 11c and 11d into which the above-mentioned projecting pieces 9a and 9b are inserted are formed at a boundary portion between the dome portion 11a and the diaphragm portion 11b of the dome-shaped diaphragm 11.

The connection between the leading end portion 10a and the terminal end portion 10b of the voice coil 10 and the lead-out lead wires 13 and 14 is performed as shown in FIG.

That is, first, the voice coil 10 is wound around the peripheral surface of the coil bobbin 9. At this time, the starting end portion 10a of the voice coil 10 is pulled out to the side surface side of the projecting piece 9a of the coil bobbin 9, for example. After the winding of the voice coil 10 is completed, the end portion 10b of the voice coil 10 is pulled out to the side surface side to the protruding piece 9b of the coil bobbin 9.

In this state, the projecting pieces 9a and 9b of the coil bobbin 9 and the starting end portion 10a and the end portion 10b of the voice coil 10 are inserted into the insertion holes 11c and 11d of the dome-shaped diaphragm 11, and are attached to the front surface side of the diaphragm 11. Withdraw. Next, the protruding pieces 9a and 9b are bent toward the dome portion 11a of the dome-shaped diaphragm 11, and the protruding pieces 9a and 9b and the dome portion 11a are fixed to each other with an adhesive.

Then, the end portions of the lead-out lead wires 13 and 14 are sandwiched between the starting end portion 10a and the end portion 10b of the voice coil 10 by the protruding pieces 9a and 9b and the end portions of the lead-out lead wires 13 and 14, respectively. Solder to 9a and 9b.

As described above, in this embodiment, the projecting pieces 9a and 9b are provided on the upper edge of the coil bobbin 9, and these are inserted into the insertion holes 11c and 11d of the diaphragm 11, and the starting end of the voice coil 10 is also inserted. 10a and the end portion 10b are drawn out from the insertion holes 11c and 11d to the surface side of the diaphragm 11, and the start end portion 10a and the end portion 10b of the voice coil 10 are formed by the protruding pieces 9a and 9b and the end portions of the lead wires 13 and 14. , And the ends of the lead wires 13 and 14 were soldered to the protruding pieces 9a and 9b.

Therefore, the connection point between the start end portion 10 a and the end portion 10 b of the voice coil 10 and the end portions of the lead-out lead wires 13 and 14 comes from a very narrow gap formed by the center pole 1 and the top plate 6. Since the voice coil 10 is detached, its connection point is completely abutted against the center pole 1 or the top plate 6 when the voice coil 10 is driven.

Further, when soldering the lead-out lead wires 13 and 14 to the start end portion 10a and the end portion 10b of the voice coil 10, the soldering is performed at a position outside the gap, so that a very narrow gap like the conventional one is used. Is not restricted, and the start end 10a and the end 10b are connected to the lead-out lead wires 13 and 14 while the start end 10a and the end 10b are pressed against the projecting pieces 9a and 9b. Therefore, it is possible to easily and reliably solder the lead end wires 13 and 14 to the start end portion 10a and the end portion 10b.

Further, since the lead-out lead wires 13 and 14 can be retrofitted, the voice coil 10 can be directly wound around the circumferential surface of the coil bobbin 9, and the voice coil 10 can be worked without displacement with respect to the coil bobbin 9. Since the process is simplified, workability can be improved.

Furthermore, since the lead-out lead wires 13 and 14 can be easily positioned between the coil bobbin 9 and the voice coil 10, the electrical connection between the voice coil 10 and the lead-out lead wires 13 and 14 can be ensured. Since it can be carried out and contact failure or the like does not occur, the incidence of defective products can be reduced.

FIG. 6 shows another embodiment in which the configuration of the speaker shown in FIG. 4 is changed. The above-mentioned protruding pieces 9a and 9b are not provided on the upper edge portion of the coil bobbin 9, The start end 10a and the end 10b of the wound voice coil 10 are simply pulled out upward.

The dome-shaped diaphragm 11 is provided with slits 11e and 11f for drawing out the starting end 10a and the ending end 10b of the voice coil 10. The slits 11e and 11f are cut out from the diaphragm portion 11b to the boundary portion of the dome portion 11a.

The start end portion 10a and the end portion 10b of the voice coil 10 and the lead-out lead wires 13 and 14 are connected as shown in FIG.

That is, first, the insulating sheet 15 is attached to the dome portion 11a in which the slits 11e and 11f are partially formed, and the insulating sheet 15 is partially closed.

Next, the starting end portion 10a and the terminating end portion 10b of the voice coil 10 are drawn out from the slits 11e and 11f of the diaphragm portion 11b. In this state, the ends of the lead wires 13, 14 are fixed to the insulating sheet 15 with an adhesive. Next, the start end 10a and the end 10b of the voice coil 10 are soldered to the ends of the lead wires 13 and 14, and the excess start end 10a and the end 10b are cut off.

As described above, in this embodiment, the starting end portion 10a and the terminating end portion 10b of the voice coil 10 are drawn out from the slits 11e and 11f to the front surface side of the diaphragm 11, and the starting end portion 10a of the drawn voice coil 10 is drawn out. By pressing the end portion 10b and the end portion 10b against the insulating sheet 15 attached to the dome portion 11a, and by soldering the end portions of the lead wires 13 and 14 drawn out from above, the start end portion 10a and the end portion 10b of the voice coil 10 and the lead end portion 10b are pulled out. The connection with the ends of the lead wires 13 and 14 is made.

Therefore, in the case of this embodiment, unlike the above-described embodiment, the starting end portion 10a and the end portion 10b of the voice coil 10 are pulled out from the insertion holes 11c and 11d formed in the diaphragm 11. In contrast, since it can be performed through the slits 11e and 11f, the workability can be greatly simplified, and the projecting pieces 9a and 9b formed on the upper edge of the coil bobbin 9 as in the above embodiment. Since it is not necessary, the structure of the coil bobbin 9 can be simplified.

In each of the above embodiments, the case where the present invention is applied to a dome speaker has been described, but the present invention is not limited to this example, and the present invention may be applied to another speaker such as a con-speaker.

[0039]

[Effect of the device]

 As described above, according to the speaker of the present invention, the start end and the rear end of the voice coil are pulled out from the insertion hole to the front side of the diaphragm, and the start end and the rear end of the pulled out voice coil are projected. The lead wire is sandwiched between one piece and the lead wire, and the connection point between the leading end and the rear end of the voice coil and the lead wire is removed from the gap formed by the center pole and the top plate.

Further, the start end and the rear end of the voice coil are drawn out from the slit to the surface side of the diaphragm, and the start end and the rear end of the drawn voice coil are drawn by the diaphragm and the lead wire. It was clamped so that the connection point between the leading end and the rear end of the voice coil and the lead wire was removed from the gap formed by the center pole and the top plate.

Therefore, the voice coil can be directly wound around the coil hobbin, and the regulation at the connection portion between the leading end portion and the rear end portion of the voice coil and the lead wire can be relieved significantly. Since the voice coil is properly and easily connected to the lead wire, the work process can be simplified and the reliability can be improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a conventional dome speaker.

FIG. 2 is a side view showing a winding state of a voice coil around the coil bobbin of FIG.

FIG. 3 is a side view showing a wound state of a voice coil around the coil bobbin of FIG.

FIG. 4 is a perspective view showing an embodiment in which the speaker of the present invention is applied to a dome speaker.

FIG. 5 is a diagram for explaining an assembly process of the dome speaker of FIG.

FIG. 6 is a perspective view showing another embodiment when the configuration of the dome speaker of FIG. 4 is changed.

FIG. 7 is a diagram for explaining an assembly process of the dome speaker of FIG.

[Explanation of symbols]

 9 coil bobbin 9a, 9b projecting piece 10 voice coil 10a start end 10b end 11 vibration plate 11a dome 11b vibration plate 13,14 lead wire 11e, 11f slit 15 insulation sheet

Claims (2)

[Scope of utility model registration request] 1. A speaker for vibrating a diaphragm attached to a coil bobbin by driving a voice coil wound around a coil bobbin arranged in a gap formed by a center pole and a top plate, wherein an upper end edge of the coil bobbin is provided. A protruding piece is provided in the portion, an insertion hole into which the protruding piece is inserted is formed in the diaphragm, the protruding piece is inserted into the insertion hole of the diaphragm, and the start end portion and the rear end portion of the voice coil are A speaker which is drawn out from the insertion hole to the front surface side of the diaphragm, and the start end and the rear end of the drawn out voice coil are sandwiched by the projecting piece and the lead wire. 2. A speaker for vibrating a diaphragm attached to a coil bobbin by driving a voice coil wound around a coil bobbin arranged in a gap formed by a center pole and a top plate, the speaker being outside the diaphragm. A slit is formed in the peripheral edge portion, and the start end portion and the rear end portion of the voice coil are pulled out from the slit to the surface side of the diaphragm, and the pulled out start end portion and the rear end portion of the voice coil are connected to the diaphragm. A speaker characterized by being sandwiched by a lead wire.