CN1898987A - Bone-conduction device and method of manufacturing the same - Google Patents
Bone-conduction device and method of manufacturing the same Download PDFInfo
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- CN1898987A CN1898987A CN 200580001404 CN200580001404A CN1898987A CN 1898987 A CN1898987 A CN 1898987A CN 200580001404 CN200580001404 CN 200580001404 CN 200580001404 A CN200580001404 A CN 200580001404A CN 1898987 A CN1898987 A CN 1898987A
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- vibrating diaphragm
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Abstract
The subject of the invention is to provides a bone-conduction device (speaker) and a method of manufacturing the bone-conduction device. By the method, not only the device can be manufactured efficiently since man-hours for processing parts is small and a troublesome ground waste removal operation can be eliminated but also dispersion in lowest resonance frequency of products resulting from dispersion in thickness of diaphragms can be minimized to contribute to the stability and the reliability of the quality of the products. The device comprises a yoke (1) having a center magnetic pole around which a voice coil is wrapped, magnets (2) disposed on the extension parts of the yoke (1) in two directions, diaphragms fixing parts (3) installed on the extension parts of the yoke (1) in the other two directions, the diaphragm (4) fixed onto the diaphragm fixing parts (3), and a plate yoke (6) fixed to the diaphragm (4). The plate yoke (6) is laser-welded to the diaphragm (4) at the outer end edges of the diaphragm fixing parts (3).
Description
Technical field
The present invention relates to bone-conduction device and manufacture method thereof, specifically, relate to easy to manufacture and can compact bone-conduction device that includes bone-conduction speaker and bone-conduction microphone and the manufacture method of making thereof.
Background technology
As bone-conduction speaker, be known as Fig. 8 to situation shown in Figure 10 (No. 2967777 communique of patent).This bone-conduction speaker is provided with yoke (yoke ヨ-Network) 31, this yoke 31 has the center pole 32 of package voice coil loudspeaker voice coil 33, above-mentioned yoke 31 prolongs to 4 directions, in its prolongation, dispose magnet 34 respectively on relative two protuberances 37/37, and on other two protuberances 38/38, stand and establish vibrating diaphragm fixed part 36/36, on above-mentioned vibrating diaphragm fixed part 36/36, pass through fixedly vibrating diaphragm 35 of hold-down screw 46.Vibrating diaphragm 35 has central opening portion 41, and the yoke plate (plate yoke プ レ-ト ヨ-Network) 43 that is fixed in vibrating diaphragm 35 is entreated hereinto in the peristome 41 and can be supported quiveringly.
In the bone-conduction speaker of said structure, in order to ensure sufficient mechanical and stable output, vibrating diaphragm 35 and yoke plate 43 at 47 places, contact position at two places up and down by spot welding (with reference to Fig. 8 and Figure 10).Under this situation by spot welding, because high heat causes bending, distortion, thickness of slab and reduces, the yoke plate 43 behind the joint and the face of vibrating diaphragm 35 produce distortion, ladder is poor, so for eliminate this distortion, ladder is poor, carries out the grinding (abradant surface of Figure 10) to yoke plate 43 and vibrating diaphragm 35 after welding.
According to this existing bone-conduction speaker with and the situation of manufacture method, component processing is many man-hour, so production efficiency is poor, in addition, because does not expose at the some junction surface, the intensity checking of this part can not be undertaken by visual, has the trouble of necessary imposed load (pushing) checking weld strength.
And owing to will grind behind the welding vibrating diaphragm 35, so the difficult management of amount of grinding exists owing to the grinding after this welding, the deviation of thickness (the particularly thickness of vibrating diaphragm 35) becomes big tendency.Its result is that the lowest resonance frequency of each product produces deviation (lowest resonance frequency is mainly determined by the thickness of vibrating diaphragm 35), the stability of the product quality that is weak and the suspicion of reliability.Moreover, exist grinding step to produce lapping rejects, it is removed the comparatively problem of difficulty (spended time) fully.
And, this output that includes the magnet type sound mapping device of loud speaker and microphone is to be determined by the narrow crack between yoke and the vibrating diaphragm (yoke plate), so during assembling, being necessary to make this narrow crack is set value, but the method that simply and exactly to make this narrow crack when in the past, not proposing any assembling be set value.
Patent documentation 1: No. 2967777 communique of patent
Summary of the invention
There are aforesaid more problem in existing bone-conduction device and manufacture method thereof, so purpose of the present invention is for providing bone-conduction device and manufacture method thereof, there are not the problems referred to above in this bone-conduction device and manufacture method thereof, promptly, because component processing few production efficiency in man-hour is good, not only do not need loaded down with trivial details lapping rejects to remove operation, and can prevent to produce the deviation of the product lowest resonance frequency that the deviation by the thickness of vibrating diaphragm causes as best one can, with this, can help the stability and the reliability of product quality.
In addition, another object of the present invention is for providing bone-conduction device and manufacture method thereof, and this bone-conduction device and manufacture method thereof can simply and exactly make the narrow crack between yoke and the vibrating diaphragm (yoke plate) when assembling be set value.
The present invention has solved above-mentioned problem with bone-conduction device, and this bone-conduction device is characterised in that: have the yoke that frame is held voice coil loudspeaker voice coil and magnet, and keeping narrow crack and the vibrating diaphragm that is equipped with on above-mentioned yoke; Above-mentioned vibrating diaphragm has central opening portion, at this part configuration yoke plate, the outer end edges of the above-mentioned vibrating diaphragm abutting part of above-mentioned yoke plate by laser welding in above-mentioned vibrating diaphragm.
The present invention has solved above-mentioned problem with bone-conduction device in addition, and this bone-conduction device is characterised in that: have the yoke that frame is held voice coil loudspeaker voice coil and magnet, and keeping narrow crack and the vibrating diaphragm that is equipped with on above-mentioned yoke; Above-mentioned vibrating diaphragm two ends warpage, its joggling part is fixed in the lateral surface of the vibrating diaphragm fixation wall of above-mentioned yoke.
For the manufacture method of the bone-conduction device of the present invention that solves above-mentioned problem is, have frame and hold the yoke of voice coil loudspeaker voice coil and magnet, and on above-mentioned yoke, keeping narrow crack and the manufacture method of the bone-conduction device that the vibrating diaphragm that is equipped with forms, it is characterized in that: above-mentioned vibrating diaphragm has central opening portion, in this part by with the fixing yoke plate of the mode of the above-mentioned vibrating diaphragm of outer end edges laser welding of the above-mentioned vibrating diaphragm abutting part of yoke plate.
In addition, for the manufacture method of another bone-conduction device of the present invention of solving above-mentioned problem is, have frame and hold the yoke of voice coil loudspeaker voice coil and magnet, and on above-mentioned yoke, keeping narrow crack and the manufacture method of the bone-conduction device that the vibrating diaphragm that is equipped with forms, it is characterized in that: the two ends warpage of above-mentioned vibrating diaphragm, be fixed in this joggling part the lateral surface of the vibrating diaphragm fixation wall of above-mentioned yoke.
Under the situation of this kind method, before the joggling part of preferred above-mentioned vibrating diaphragm fixing, between above-mentioned vibrating diaphragm and above-mentioned yoke, sandwich the distance piece with the suitable thickness in above-mentioned narrow crack, after the said fixing operation, above-mentioned distance piece is extracted out.
According to bone-conduction device of the present invention and manufacture method thereof, because component processing few production efficiency in man-hour is good, so not only do not remove operation owing to there is the grinding step of face to need not loaded down with trivial details lapping rejects, and preventing of can trying one's best produce the deviation of the product lowest resonance frequency that the deviation by the thickness of vibrating diaphragm causes, so have the stability that helps product quality, the effect of reliability.
With the outer end edges of above-mentioned vibrating diaphragm or two ends joggling part laser welding under the structure of above-mentioned vibrating diaphragm fixed part, need not the screw thread stopping part, at this moment, have the effect that can make integral miniaturization.
Description of drawings
Fig. 1 constitutes the figure of the yoke plate of bone-conduction device of the present invention to the fixing means of vibrating diaphragm for expression.
Fig. 2 constitutes the figure of the yoke plate of bone-conduction device of the present invention to the other fixing means of vibrating diaphragm for expression
Fig. 3 constitutes the figure of the fixing means of the yoke of bone-conduction device of the present invention and vibrating diaphragm for expression.
Fig. 4 is the stereogram of other structures of expression bone-conduction device of the present invention.
Fig. 5 is the exploded perspective view of bone-conduction device shown in Figure 4.
Fig. 6 is the side view of bone-conduction device shown in Figure 4.
Fig. 7 is the sectional arrangement drawing of the manufacture method of expression bone-conduction device shown in Figure 4.
Fig. 8 is the figure of the existing bone-conduction speaker of expression.
Fig. 9 is the exploded perspective view of existing bone-conduction speaker.
Figure 10 constitutes the figure of the fixing means of the yoke of existing bone-conduction speaker and vibrating diaphragm for expression.
Embodiment
According to description of drawings optimal way of the invention process.In addition, there are by vibrating diaphragm output the still difference by the vibration of vibrating diaphragm pickup bone in bone-conduction speaker and bone-conduction microphone, but can be same structure in fact, comprise this two so the bone-conduction device in the following description is interpreted as.
The basic structure of bone-conduction device of the present invention does not change above-mentioned existing structure.That is, include: have the center pole of package voice coil loudspeaker voice coil and the yoke 1 that extends to four direction; The magnet 2 that on the extension of the both direction of yoke 1, disposes; The vibrating diaphragm fixed part 3 that on the extension of the in addition both direction of yoke 1, is provided with; Be fixed in the vibrating diaphragm 4 on the vibrating diaphragm fixed part 3.
The structure of this bone-conduction device is the so-called external magnetic type in magnet 2 outside that is configured in voice coil loudspeaker voice coil, but also can be configured in the so-called internal magnetic type structure of the inboard of voice coil loudspeaker voice coil for magnet 2.
Vibrating diaphragm 4 is to the outstanding shape in four directions as shown in Figure 1 to Figure 3, has the central opening of growing on the above-below direction among the figure 5.Yoke plate 6 towards central opening 5 is installed on vibrating diaphragm 4.Yoke plate 6 extends along central opening 5, and the part in central opening 5 is thicker, and is thinner with the both ends of vibrating diaphragm 4 butts.On yoke plate 6, be formed with the fixedly screw 9 of usefulness of suitable yoke plate.
The fixing mode with laser welding between the edge of the vibrating diaphragm abutting part 7 at the two ends of yoke plate 6 and vibrating diaphragm 4 of yoke plate 6 relative vibrating diaphragms 4 is carried out.Welding can be each place on each vibrating diaphragm abutting part 7, but for provide intensity and stable preferred weld each (represent weld with bullet among the figure) more than two places.Weld also can be positioned at the top ends (Fig. 1) of vibrating diaphragm abutting part 7, also can be positioned at both side ends (Fig. 2).
Laser welding is the thermal source by the high-energy-density of optically focused, makes the joint method of metal fusion partly/solidify, and reduces such welding deformation without thickness of slab.Thereby, according to the situation of the method, need not grinding operation, so component processing is few man-hour for the correction of ladder difference.
Fig. 1 and vibrating diaphragm 4 shown in Figure 2 are identical with the situation of above-mentioned existing bone-conduction speaker, have the extension of using than magnet configuration (above-below direction among Fig. 1,2) and want big, the screw thread retainer 7 that right and left projects upwards in Fig. 1,2.Be formed with screwed hole 8 on the screw thread retainer 7, hold-down screw is screwed into vibrating diaphragm fixed part 3 by screwed hole 8 screw threads, by this vibrating diaphragm 4 is fixed on the vibrating diaphragm fixed part 3.
Relative therewith, there is not screw thread retainer 7 on the vibrating diaphragm 4 shown in Figure 3, corresponding vibrating diaphragm fixed part 3 also diminishes.Vibrating diaphragm 4 in this case, its ora terminalis by laser welding on the ora terminalis of vibrating diaphragm fixed part 3.Welding in this case is in order to provide intensity and stability also more than preferred weld two places (bullet is represented the place).According to this fixing means, can omit owing to adopting screw thread to fix the space of using, so relate to the miniaturization of bone-conduction speaker integral body.
Fig. 4 and bone-conduction device shown in Figure 5 are the internal magnetic type that magnet 2 is disposed at the inboard of voice coil loudspeaker voice coil 9, the two ends warpage of vibrating diaphragm 4, this joggling part 10/10 is fixed in the lateral surface of vibrating diaphragm fixation wall 13/13, and vibrating diaphragm fixation wall 13/13 is stood and is located at being provided with on the different both sides of side with external yoke 12 of yoke base 11.This joggling part 10/10 is fixing by welding, bonding etc., preferably by laser welding (with reference to the bullet of Fig. 6) to the lateral surface of vibrating diaphragm fixation wall 13/13.
According to the situation of the method, before the lateral surface of vibrating diaphragm fixation wall 13 was fixing, between vibrating diaphragm 4 and external yoke 12, the state of drawing with the end sandwiched banded distance piece 14 (Fig. 7) at joggling part 10.Both fixed gaps between distance piece 14 thickness and vibrating diaphragm 4 and the external yoke 12 are suitable.By sandwiching this distance piece 14, can guarantee the both fixed gaps between vibrating diaphragm 4 and the external yoke 12, so under this state, the joggling part 10 of vibrating diaphragm 4 is fixed in the lateral surface of vibrating diaphragm fixation wall 13.After this fixing operation finishes,, keep set gap herein by extracting distance piece 14 out.
To just detailed to a certain extent being illustrated of its excellent execution mode of the present invention, but, obviously do not violate the spirit and scope of the present invention, just can in the scope of broad, constitute different execution modes, thereby the present invention in the dependent claims scope, limited, the specific execution mode of not invented limits.
Claims (9)
1. bone-conduction device is characterized in that: have the yoke that frame is held voice coil loudspeaker voice coil and magnet, and keeping narrow crack and the vibrating diaphragm that is equipped with on above-mentioned yoke; Above-mentioned vibrating diaphragm has central opening portion, at this part configuration yoke plate, the outer end edges of the above-mentioned vibrating diaphragm abutting part of above-mentioned yoke plate by laser welding in above-mentioned vibrating diaphragm.
2. bone-conduction device as claimed in claim 1 is characterized in that: above-mentioned vibrating diaphragm, its outer end is by the vibrating diaphragm fixed part of laser welding in above-mentioned yoke.
3. bone-conduction device is characterized in that: have the yoke that frame is held voice coil loudspeaker voice coil and magnet, and keeping narrow crack and the vibrating diaphragm that is equipped with on above-mentioned yoke; The two ends warpage of above-mentioned vibrating diaphragm, its joggling part are fixed in the lateral surface of the vibrating diaphragm fixation wall of above-mentioned yoke.
4. bone-conduction device as claimed in claim 3 is characterized in that: the joggling part of above-mentioned vibrating diaphragm is by the lateral surface of laser welding in above-mentioned vibrating diaphragm fixation wall.
5. the manufacture method of bone-conduction device, hold the yoke of voice coil loudspeaker voice coil and magnet for having frame, and on above-mentioned yoke, keeping narrow crack and the manufacture method of the bone-conduction device that the vibrating diaphragm that is equipped with forms, it is characterized in that: above-mentioned vibrating diaphragm has central opening portion, this part by with the outer end edges laser welding of the above-mentioned vibrating diaphragm abutting part of yoke plate in the fixing yoke plate of the mode of above-mentioned vibrating diaphragm.
6. the manufacture method of bone-conduction device as claimed in claim 5, it is characterized in that: the outer end edges laser welding of above-mentioned vibrating diaphragm is in above-mentioned vibrating diaphragm fixed part.
7. the manufacture method of bone-conduction device, hold the yoke of voice coil loudspeaker voice coil and magnet for having frame, and on above-mentioned yoke, keeping narrow crack and the manufacture method of the bone-conduction device that the vibrating diaphragm that is equipped with forms, it is characterized in that: the two ends warpage of above-mentioned vibrating diaphragm, be fixed in this joggling part the lateral surface of the vibrating diaphragm fixation wall of above-mentioned yoke.
8. the manufacture method of bone-conduction device as claimed in claim 7 is characterized in that: with the joggling part laser welding of above-mentioned vibrating diaphragm in the lateral surface of above-mentioned vibrating diaphragm fixation wall.
9. as the manufacture method of claim 7 or the described bone-conduction device of claim 8, it is characterized in that: before the joggling part of above-mentioned vibrating diaphragm is fixing, between above-mentioned vibrating diaphragm and above-mentioned yoke, sandwich the distance piece with the suitable thickness in above-mentioned narrow crack, after the said fixing operation, above-mentioned distance piece is extracted out.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004037229 | 2004-02-13 | ||
| JP037229/2004 | 2004-02-13 | ||
| JP106702/2004 | 2004-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1898987A true CN1898987A (en) | 2007-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200580001404 Pending CN1898987A (en) | 2004-02-13 | 2005-02-09 | Bone-conduction device and method of manufacturing the same |
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| CN (1) | CN1898987A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009124462A1 (en) * | 2008-04-09 | 2009-10-15 | Hu Qiang | A bone-conduction sensor |
| CN103716738A (en) * | 2013-12-18 | 2014-04-09 | 张木云 | Vibration loudspeaker |
| CN104427442A (en) * | 2013-08-22 | 2015-03-18 | 昆山迈思科兄弟光电科技有限公司 | Diaphragm laser welding apparatus and processing technology thereof |
| CN105850153A (en) * | 2013-10-29 | 2016-08-10 | Tmp杰斯特·迪·费德利·丹妮拉和C·S·A·S | Electromagnetic transducer for generating vibrations for sound and/or words bone conduction |
-
2005
- 2005-02-09 CN CN 200580001404 patent/CN1898987A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009124462A1 (en) * | 2008-04-09 | 2009-10-15 | Hu Qiang | A bone-conduction sensor |
| CN104427442A (en) * | 2013-08-22 | 2015-03-18 | 昆山迈思科兄弟光电科技有限公司 | Diaphragm laser welding apparatus and processing technology thereof |
| CN105850153A (en) * | 2013-10-29 | 2016-08-10 | Tmp杰斯特·迪·费德利·丹妮拉和C·S·A·S | Electromagnetic transducer for generating vibrations for sound and/or words bone conduction |
| CN105850153B (en) * | 2013-10-29 | 2019-09-10 | Tmp杰斯特·迪·费德利·丹妮拉和C·S·A·S | It is used to form the electromagnetic transducer of sound and/or the vibration of voice osteoacusis |
| CN103716738A (en) * | 2013-12-18 | 2014-04-09 | 张木云 | Vibration loudspeaker |
| CN103716738B (en) * | 2013-12-18 | 2018-06-26 | 上海超彩通信科技有限公司 | Vibrating speaker |
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Open date: 20070117 |