CN85108268A - Piezo-electric loudspeaker - Google Patents
Piezo-electric loudspeaker Download PDFInfo
- Publication number
- CN85108268A CN85108268A CN 85108268 CN85108268A CN85108268A CN 85108268 A CN85108268 A CN 85108268A CN 85108268 CN85108268 CN 85108268 CN 85108268 A CN85108268 A CN 85108268A CN 85108268 A CN85108268 A CN 85108268A
- Authority
- CN
- China
- Prior art keywords
- oscillating plate
- electricity
- outer rim
- piezo
- neck
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
A kind of piezo-electric loudspeaker is connected in electricity by the taper oscillating plate and causes element and constitute.It is characterized by this oscillating plate and have and surround its neck and form as one, and the different cylindrical body of material and oscillating plate is engaged in electricity by this cylindrical body with its end face (bottom surface) and causes on the element.
Description
The present invention is in the relevant piezo-electric loudspeaker, the oscillating plate supporting structure of the high pitch of resetting.
As the loud speaker of stereo set and the sound generator of earphone, adopting electricity to cause in the form of element, following several structure was arranged once, in these structures, electricity causes element and is directly connected in oscillating plate and moves.
Fig. 6 illustrates a wherein example.The 1st, the thin plate that sinters into by metal oxide, the 2nd, the sounding board by metal constitutes constitutes electricity by these devices and causes element.The 3rd, taper cone oscillating plate is contacted with the most advanced and sophisticated neck at cone center on the sounding board, again with its outside with adhesive 4, directly be glued together.
Fig. 7 illustrates an other example.Its structure is: with the inboard of adhesive 4 with the cone neck tip portion 3a of oscillating plate 3, directly be bonded in electricity and cause on the element.
Therefore, the end that oscillating plate is very thin is assemblied in electricity and causes on the element, processing difficulties, and also bonding also inhomogeneous, the mechanical strength after the assembling is very little.In this structure, for the most advanced and sophisticated and electric adhesive that causes element of bonding oscillating plate cone, require quality certainly, also to take into full account consumption.Cause element because oscillating plate directly is bonded in electricity, the various characteristics of element will directly pass to oscillating plate, and unwanted vebrato is also transmitted, and this is unfavorable on the characteristic of loud speaker.
In addition, piezo-electric loudspeaker in the past as shown in Figure 6, the structure that is adopted is: the edge 3b of the oscillating plate outer rim of taper cone is to use same material or with the support part 5 that other materials constitutes, is directly fixed on the framework 6.At the downside of framework, general structure is to support flexibly that with reed 7 electricity causes element.
In this structure, cause element when oscillating plate transmits sound from the electricity at center, arrive behind the outer rim 3b and can produce passback, thereby the reflex of sound takes place, very unfavorable to acoustics.As the method that reduces sound reflection, once attempted as shown in Figure 7 in the past, outer rim is assemblied on the framework 6 through elastomer 8, but this structure does not have effectiveness for high range, and structure is also complicated.
The present invention develops for solving the above problems.Its objective is that the stick portion that provides a kind of oscillating plate and electricity to cause element has mechanical strength and the piezo-electric loudspeaker of the high range that is fit to reset.
Now with regard in this invention, representative content is summarized as follows:
The oscillating plate of taper cone is connected in that electricity causes element and in the piezo-electric loudspeaker that makes, this oscillating plate has the barrel mast that is configured as the hardening resin formation of one with the cone neck, being bonded in electricity by the end face of this barrel mast causes on the element, thus to increase the oscillating plate bonding strength that electricity is caused element, and improved reproducing characteristics at high range, achieve the above object.
Fig. 1 illustrates one embodiment of the present of invention, and it also is the sectional drawing of piezo-electric loudspeaker critical piece.
Wherein, the 1st, sinter the electricity that thin plate constitutes into by metal oxide and cause element.The 2nd, the sounding board that sheet metal makes.The 3rd, by metal, synthetic resin or the taper cone oscillating plate that constitutes with paper stock.The 9th, constitute by sclerosis adhesiveness synthetic resin (as epoxy resin), be shown under the unhardened soft condition as Fig. 3 (a), the outside that makes it to surround taper cone neck is bonded into one, as compressing and make it sclerosis to the center that electricity causes element sounding board 2 shown in Fig. 3 (b), bonding then with smooth end face and sounding board.This resin barrel mast 9 can be selected different shape as shown in Figure 4, and for example: Fig. 4 (a) is the recess diameter D of oscillating plate side
1Connect the bottom surface diameter D that electricity causes element
2(D greatly
1＞D
2) a kind of, Fig. 4 (b) is recess diameter D
1Than bottom surface diameter D
2Little (D
1＜D
2) a kind of.No matter that a kind of situation all must fully be reserved the height h of barrel mast, make the most advanced and sophisticated unlikely contact sounding board of neck of oscillating plate.
When the taper cone of oscillating plate was square, the resin barrel mast then also was cubic barrel mast as shown in Figure 4.
The resin barrel mast 9 that surrounds taper cone oscillating plate neck 3a as shown in Figure 2 and form as one, cause the sounding board 2 of element for electricity, can utilize its smooth end face (bottom surface) contact, by heating, be glued together securely again with the adhesiveness of barrel mast itself or by adhesive.
The 10th, the outer rim that is made of synthetic resin is supported part, and the outer rim support partly is by different material and the material that density is different with material is identical make with oscillating plate 3 or with framework 6.Outer rim supports part 10 that the encirclement of oscillating plate outer rim is bonded into one.And then be access to framework or prop up and be held on the framework with contact condition gently.
Outer rim is supported part, during elastomers such as employing sponge, for making cavernous body is combined well with the oscillating plate outer rim, cavernous body must be placed on the framework and be supported.
Following table illustrates in the present invention, selects the example of neck material for use according to the material of oscillating plate.
| Component part | Materials used | |
| Oscillating plate | Paper stock | Polyester |
| Neck | Epoxy resin+filler | Butyl resin+filler |
| Outer rim | Cardboard | Polyurethane |
| Framework | Plastics or metal | |
In addition, the filler that makes an addition to resin in neck material is to adopt the suitably padded coaming that can change the sound equipment transmission characteristic.
The cardboard that peripheral edge portion uses can be an one with the taper cone material forming that constitutes oscillating plate.It as shown in Figure 5, in the tank of dipping cone upper and lower mould tool, when putting into the paper stock of short fiber and long stapled paper stock and copying paper, heavy short fiber 3C promptly precipitates and concentrates on the outer rim downside, the long fibre that proportion is little is then concentrated oscillating plate 3 places in the middle of the big cone that flows, having only outer rim is to be made of the big fiber of density, obtains taper cone oscillating plate with this.In addition, also available when the overlapping again long fibre paper stock of oscillating component 3d copies paper, can obtain oscillating component is the taper cone oscillating plate that is made of sandwich-like long fibre and short fiber.
According to the present invention that above-mentioned example is narrated, following effect is arranged.
(1) because by means of the resin barrel mast that on the oscillating plate neck, is shaped, being bonded in electricity indirectly causes on the sounding board of element, so resin barrel mast different itself with the oscillating plate material, can become filter or sound equipment impedance, and the vibration that electricity causes element is passed to oscillating plate, therefore can enlarge the playback range.Thereby utilize and suitably select the barrel mast material, can eliminate the shortcoming that in the past oscillating plate is directly connected in the playback sound that is produced when electricity causes element.For example: when playback high sensitivity sound, the existing cardboard of outer rim flexibly has hard core (resin barrel mast) again on an oscillating plate owing to have, and when resetting high audio certainly, can become a kind of desirable oscillating plate.
(2) feel on, the piezo-electric loudspeaker of aforementioned (in the past) structure has the high pitch of delicate decay sound for the angle iron and so on of for example resetting, and also is inappropriate.Its reason is in above-mentioned (in the past) structure, be to directly act on the oscillating plate because electricity causes the vibration of element, and core occupies no small area.But, in the present invention, adopt the transition structure of resin barrel mast, when taking identical playback method, acoustically can regard point sound source as, this phenomenon is the high range necessary conditions of resetting, and therefore the linear ratio of sound is increased in the past.
Structure of the present invention, the high-fidelity speaker as having 3 tunnel outputs or 3 road above functions all can utilize in the scope of application.
In the past, although piezo-electric loudspeaker has advantage easy to manufacture, the reason of widely not utilized was owing to can produce the cause of the tonequality of the unstable sensation of above-mentioned sound field., owing to adopt when of the present invention, then can keep making and go up original advantage, and can realize to produce the piezo-electric loudspeaker of desirable sound field.
(3) be contained in the resin cylindrical body that the neck of taper cone oscillating plate is glued together and electricity to be caused the sounding board of element with its bottom surface (end face) bonding with the plane because structurally be; the structure that directly is bonded in sounding board with the used in the past pointed neck with taper cone oscillating plate is compared; neck has obtained protection; and mechanical strength enlarges markedly, and also can fully adapt to the downward force that applies at confined state.Therefore, can improve the piezo-electric loudspeaker reliability of products.
The resin barrel mast is not defined as drum, can be elected to be the shape of similar cylinder, for example does in echelon, shape arbitrarily such as rectangle.Again, on the material so long as can make support and different with the oscillating plate material, that's all.
(4) the oscillating plate outer rim is to constitute by the material different with the oscillating plate bulk density or by the different material of sound equipment impedance, so the vibration of oscillating plate can not be with original frequency directly to the framework transmission, perhaps with the phase shift transmission, thereby the areflexia of vebrato, can make good sound source and use.
(5) outer rim of oscillating plate owing to directly be not fixed on the framework, makes outer rim be in the state of energy free vibration but adopt through elastomer, leans on the weight of vibrational system to be supported on the framework.So just outer rim is not fixed in the standing part of framework, total is simple.In this structure, only by the neck support, outer rim is unsettled for oscillating plate.So in the framework outer rim is supported the scope of portion size, be in the state of free vibration, can more effectively eliminate the reflection of vebrato.
The simple declaration of accompanying drawing:
Fig. 1 is one embodiment of the present of invention, also is the sectional drawing of piezo-electric loudspeaker critical piece.
Fig. 2 is one embodiment of the present of invention, is oscillating plate and the electric tacky state oblique view that causes element in the piezo-electric loudspeaker.
Fig. 3 (a) is to use the technology sectional drawing that the present invention is bonded in the resin barrel mast a part of operation of piezo-electric loudspeaker oscillating plate (b).
Fig. 4 (a) is the chamfer map that other forms of piezo-electric loudspeaker of the present invention (resin) barrel mast are used in explanation (b).
Fig. 5 is other form part sectional drawings of peripheral edge portion that piezo-electric loudspeaker of the present invention is used in expression.
Fig. 6 and Fig. 7 are the sectional drawings that piezo-electric loudspeaker in the past is described respectively.
1: metal oxide thin plate (electricity causes element),
2: sounding board
3: oscillating plate
3a: the outer rim of the neck of oscillating plate, 3b oscillating plate
4: adhesive
5: part is supported in flanging
6: framework
7: reed
8: elastomer
9: the resin cylindrical body
10: the resin support
11: sponge
Claims (2)
1, piezo-electric loudspeaker is connected in electricity by the oscillating plate of taper cone and causes on the element and constitute; It is characterized by: this oscillating plate has the cylindrical body that the adhesion hardening resin that is configured as one by surrounding its neck constitutes, and is bonded in electricity by the end face (bottom surface) of this cylindrical body and causes element.
2, piezo-electric loudspeaker is connected in electricity by the neck of taper cone oscillating plate and causes element, and its outer rim is propped up and is held in framework and constitutes, it is characterized by: this oscillating plate has the cylindrical body that the hardening resin that is configured as one by surrounding its neck constitutes, be bonded in electricity by the end face of this cylindrical body and cause element, outer rim at above-mentioned oscillating plate has the hardening resin of encirclement outer rim or the ring-type flanging of metal, this outer rim can be under the state of free vibration, is held on the framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85108268 CN85108268A (en) | 1985-11-12 | 1985-11-12 | Piezo-electric loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85108268 CN85108268A (en) | 1985-11-12 | 1985-11-12 | Piezo-electric loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85108268A true CN85108268A (en) | 1987-06-24 |
Family
ID=4795951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85108268 Pending CN85108268A (en) | 1985-11-12 | 1985-11-12 | Piezo-electric loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85108268A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102265646A (en) * | 2008-12-26 | 2011-11-30 | 松下电工株式会社 | Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached |
| CN101336562B (en) * | 2005-12-27 | 2012-11-28 | 日本电气株式会社 | Piezoelectric actuator and electronic device |
-
1985
- 1985-11-12 CN CN 85108268 patent/CN85108268A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101336562B (en) * | 2005-12-27 | 2012-11-28 | 日本电气株式会社 | Piezoelectric actuator and electronic device |
| CN102265646A (en) * | 2008-12-26 | 2011-11-30 | 松下电工株式会社 | Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached |
| US9031265B2 (en) | 2008-12-26 | 2015-05-12 | Panasonic Intellectual Property Management Co., Ltd. | Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1164144C (en) | Inertial vibrative transducer | |
| CN203883985U (en) | Loudspeaker diaphragm | |
| CN1195458A (en) | Panel-form loudspeakers | |
| KR19990044031A (en) | Inertial Vibration Transducer | |
| CN1195463A (en) | Panel-form microphones | |
| US4315557A (en) | Diaphragm for electro-acoustic transducer | |
| CN1275876A (en) | Loudspeaker | |
| US3721840A (en) | Sound generator | |
| CN87100528A (en) | Thin film region is divided into the wide-band loudspeaker in the subarea that is applicable to the different frequency scope | |
| US5155285A (en) | Musical instrument piezoelectric transducer | |
| CN109660919A (en) | A kind of sounding device | |
| US5805726A (en) | Piezoelectric full-range loudspeaker | |
| JPS6028200B2 (en) | electroacoustic transducer | |
| CN85108268A (en) | Piezo-electric loudspeaker | |
| CN1171501C (en) | Loudspeaker | |
| US20230179922A1 (en) | Flexible circuit board and speaker using same | |
| US2926741A (en) | Speaker | |
| CN115278482A (en) | Voice coil and loudspeaker | |
| CN207166754U (en) | A kind of loadspeaker structure | |
| CN210518807U (en) | Loudspeaker diaphragm | |
| CN212696210U (en) | Centering support piece and loudspeaker | |
| JPS60171900A (en) | Speaker | |
| CN205545887U (en) | Loudspeaker diaphragm | |
| JPH0752996B2 (en) | Vibration plate for speakers | |
| JPS62224196A (en) | Loudspeaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |