JPS59216397A - Transducer, method of tuning said transducer and transducer used for said tuning method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to
The reluctance of the response fluid
- Tuneable response transceiver like a speaker. For that matter, for example, rice! ! I Special WF No. 3゜527.902- and No. 3, 53.6, 862
The apparatus disclosed in No. 1. ! ! 1
9 Governor delta No. 5゜502,811, No. 4,327,25
7- and No. 4°365.917.

According to the invention, the transducers, first and second
a /ζth frame for providing an opening, a diaphragm for covering the first opening, and a motor.
) and the motor actuation 75 (-1-y for coupling to the motor diaphragm to excite the diaphragm, the diaphragm being connected to the frame I7j and the diaphragm 75). means for defining an opening behind the chamber and for levering a retreat between the chamber and the second opening; and tuning of the circumferential frequency response of the diaphragm to motor operation. In order to achieve this, the lid which flows through the second opening is provided with a regulating valve for quick control.

Historically, according to the present invention, the transducer is called a cute reluctance subika.

Also according to the present invention, Tanabata is provided with a magnet, means for accessing the grinding wheel to the frame, a transducer coil, and the magnet and the transducer coil for producing the movement of the diaphragm. and means for connecting the reaction means to the entire diaphragm.

Also, according to the invention, the reaction means consists of a reluctor plate, for example a disk of cylindrical material, and the means for connecting the reaction means to the diaphragm include means for attaching the reluctor plate to the diaphragm. I'm reading.

According to an embodiment of the invention, the means for selectively controlling the flow of air from the second aperture comprises a plate extending through the second aperture; It consists of means for accessing the board so that it can be moved, and means for giving the board a boat. The alignment of the boat 1j relative to the opening of the culvert 2 maximizes the ventilation of the boat, and the movement of that plate into a position where the boat is no longer aligned with the second opening reduces the ventilation of the chamber.

According to another embodiment of the invention, the means for selectively directing the air flow through the second opening include a plate covering the second opening; means for mounting the plate for movement with respect to the opening of the plate; and means for providing the plate with a boat. A porous, compressible shell is held between the frame and the plate. Means for mounting the plate for movement relative to the second aperture includes means for selectively controlling airflow between the second aperture and the boat in the plate;
10 Wk for selectively compressing the pressure material between the second opening and the boat in the plate.

More particularly, according to example embodiments, the means for selectively controlling the flow of air from the second opening comprises
with respect to a first plate covering an aperture, means for statically mounting the first & on the aperture, means for providing a temporary boat of Ml, a second plate, and the first plate; Contains means for attaching the 2142 & for movement and means for providing the boat with its second plate.

The alignment of the boat on the first plate relative to the boat on the second plate makes the m-A'fc maximum of that room. Is the interlocking of the second plate to a position where the alignment of the boats on the first and second plates becomes poor? 1. & reduce it a little.

In history! 1j According to the quantitatively exemplified ability to leave the country, the second
The means for selectively controlling the flow of air from the opening includes a first plate covering the second opening, and means for applying a bow to the first plate. , a second plate, and
the second plate 1c so as to move (4) with respect to the first plate;
It includes means for attaching and means for clamping/clamping the second plate. A porous compressible material is retained between the first and second plates. Means for attaching the second & all so as to be movable with respect to the 10th edition alternately controls the air flow between the boat on the first plate and the boat on the second plate. Therefore, the pressed rhinoceros 1a between the first and second plates is
``:r I am looking for a means for selective compression.

Further in accordance with the present invention, a method for tuning the frequency response of a transducer has first and second apertures, wherein the first aperture is covered by a tire phragm and located behind the diaphragm and itself. a transducer frame defining a barrel within the transducer frame; providing a passageway between the barrel and a second 1i40; and selecting nitrogen gas to flow through the second opening. driving the transducer's motor element; testing the transducer's response; and determining the desired frequency response. and transporting the valve.

Additionally, the above method includes the step of fully testing the transducer response after adjusting the tuning valve.

According to another aspect of the invention, a tunable transducer has first and second bilo, wherein the first aperture is covered by a diaphragm and has a nitrogen oxide film in the back of the diaphragm and within itself. a transducer frame defining the same and providing a passageway between the lhj and a second opening for selectively varying airflow through the second lhj port; Transducer motor element't)! The 8AA is served by testing its transducer response and adjusting its valves to provide the desired transducer response.

Historically, transducer response has been tested in the same manner as in 1).

The above and other objects, advantages and configurations of the present invention will be clearly understood from the following detailed description, which is illustrated in the drawings illustrating the invention in its entirety. If you refer to all figures 2, 4～・l l'J
A capable response transducer 2o refers to the basket frame 22. The frame 22 has a generally true cylindrical shape and has a front opening 24 and a rear opening 26 having a diameter of φt11. Ears 28 are provided. The troughs of the ears 28 are provided with eyelets 30.30 for mechanical attachment as well as for hypocardial termination for components within the frame 22.

An annular helical ring 2 is provided around the rear end 26. As best seen in FIG. The step 36 extends in a trench to the dimensions of the cylindrical inner wall 58 of the frame 22. The sabe opening 26 has two generally circular flat plates 4
It is covered by 0.42. The diameter of plate 42 is such that it fits within the diameter of step 34 with sufficient clearance to be rotated when a force is applied to rotate it.

However, when no force is applied to plate 42, the frictional engagement between plate 42 and step 54 is sufficient to hold &42 in its ejected position. The diameter of plate 40 is such that it rests within its inner wall 58.

Plate 40 acts as a plate for transducer 2o. The provisional 40 is provided with a plurality of boats, illustratively four boats 44.

The board 42 is provided with a plurality of boats, four boats 46 in the example. Boats 44 and 46 are attached to cylindrical magnets 50 which are positioned within inner wall 68 relative to plate 40.
They are spaced sufficiently apart such that they are within the diameter of a central opening 48 provided in the center. The magnet 5o is attached within the frame 22 using adhesive. &4o has a pole piece 5 extending generally coaxially within the central opening 48.
2 is given. The structure of the pole piece 52 is generally cylindrical. A stationary coil 54 surrounds the pole piece 52;
and a thread 56 extending through the side wall 58 of the frame 22 and terminating in a respective eyelet 30.30.
is saying.

The front opening 24 is closed by a diaphragm membrane 60, such as phenol, attached to the inner circumferential edge of the front opening 24 of the frame 22 by a diaphragm membrane 60, such as phenol. Although not illustrated, the diaphragm can be formed with concentric compliance therein. reluctor board 6
2 is glued or otherwise attached to the outer surface 64 of the diaphragm 60. reluctor plate (r
eluctor plate,) 1 as ijH1 marker
Constructed from strong corrosion-resistant stainless steel.

When a voltage at an audio frequency is applied to the eyelet 30.30, a current flows through the coil 54 and moves the reluctance kf at the central aperture 48. This is reluctor board 6
2 to cause a reaction between the reluctor plate 62 and the diaphragm 60 connected to the reluctor plate, converting the audio frequency electrical voltage applied to the eyelet 50.30 into acoustic energy. do. On the outside of the cavity 66 formed behind the diaphragm 60, the coil 54 and the bow 44, 46, a radially central opening 48 is formed.
It passes through the castle and moves slowly into the atmosphere. As best illustrated in FIG.
A spanner wrench hole 68 is provided which is engaged by a spanner wrench which rotates the plate 42 to change the alignment between the plates. The alignment of the bows 44, 46 in each of the first and second plates 40, 42 maximizes ventilation of the cavity 66. Rotation of plate 42 to a position where boats 44 and 46 are no longer aligned reduces ventilation of cavity 66 and damps the response of transducer 20 near the fundamental resonant frequency of its moving system. In order to increase the synchronization effect of this adjustment, a woven cross-section 70 is inserted between the plates 40 and 42.

Referring now to the embodiment of FIG.

Frame 122 is of generally cylindrical configuration and is provided with a front opening 124 and a rear opening 126. The frame 122f71;j is also provided with generally opposingly disposed and radially outwardly extending ears 128, each of which has mechanical and electrical terminations. Eyelet 160 for use
is given.

An annular edge 132 is provided around the rear opening 126. As best seen in FIG. 4, the annular rim 102 includes a radially inner step 134 to the step and a radially outer recess 136 to the front. The step 136 extends approximately to the dimension of the cylindrical inner wall 168 of the frame 122. The rear opening 126 is covered by two generally circular flat walls 140,142. The diameter of plate 142 is within the range that it is with respect to plate 140! 138 to fit within the diameter of the step 154 with sufficient clearance to be moved in the direction of the 1st lil i gland. The diameter of plate 140 is determined so that it remains at rest within inner wall 158. Threaded opening 14 for medium heat in plate 140
1 is provided, and an unthreaded opening 143 is provided in the center of the plate 142. Plate 140 and Plate 142
A layer of material 147 is interposed between the two.

A screw 145 is passed through the aperture 143 and the fabric layer 147 and is threaded into the aperture 141.

Plate 140 acts as a polar plate for transducer 120. Plate 140 is provided with digit boats, illustratively four bauds 144, and plate 142 is provided with value numeric boats, illustratively four bauds 1146. Boats 144 and 146 are all board 1
The central apertures 148 provided in the concentric magnets 150 located in the inner wall 138 for the magnets 150 are spaced closely enough m- to be within the diameter. magnet 150
The plate 140 is provided with a pole piece 152 extending generally coaxially within the central opening 148.

'T15 yA of the strip 152 is approximately in the shape of a perfect circle. A stationary coil 154 wraps around the strip 152 and has a lead 156 extending along the side wall 158 of the frame 122 and terminating in an eyelet 130 on each side.

The front opening 124 is closed by a diaphragm 160, such as a phenolic material, attached to the inner periphery of the front opening 124 of the frame 122, abutting or otherwise attached thereto. As standard, the diaphragm 160 is made from ferromagnetic stainless steel (referenced in Ryo 164) by layering or other means.

The voltage at 0.1' audio frequency is the input terminal of the eyelet)
When the voltage is applied to 130 and 130, the current is 1s in the coil.
After 41 weeks, the reluctance fc'& was carried out at Chuo 1 Kawaguchi 14B. This exerts a force on the reluctor plate 162, causing the diaphragm 160 connected to the reluctor plate 1622 to react, thereby producing an audio response imprinted on the eyelets 150, 150. Tun 7I: Convert to total acoustic energy. The air behind the diaphragm 160] 166 is the coil 1
54 and on the outside of the boat 144, 146, it is open to the atmosphere through the area of the medium opening 148 in a live manner. As best illustrated in FIG.
The tightening of 45 compresses the woven material 147.

1411, ventilation of the cavity 166 through the woven material 147 and the boat 146 can be controlled by adjusting the compression of the layer of woven material. this is,
Transuser 1 near its fundamental resonance frequency narrow
Allows selective tuning for damping of 20 responses. Stiffness of transgisa
Other techniques that can be used to perform the same A include, without limitation, screw-regulating valves, and rotating plate boat-alignment and 116 layer-compression techniques in combination. It is possible to vary the construction of these boats and the type of material used to create the desired damping and tuning effect.
It is 1 JB.

If you come and refer to Figure 5, the first to fourth parts immediately after assembly.
A device of the type illustrated in the figure is capable of all 13 wavenumber responses as illustrated by the dotted lines. Testing the frequency response of the device immediately after manufacture produces this frequency response characteristic. The device is made of a material whose frequency response characteristics are woven with dimensions that are somewhat flat over the operating range of the transducer to achieve a characteristic as illustrated by the solid line in FIG. ★In order to reduce the pressure Md 'f of 1717 (Figs. 3 and 4) or increase the number of pregnant dogs, in this example, rotate the ei 42 with a spanner wrench (Figs. 1 and 2), or
Or it can be tuned by loosening the screws 145 or setting the II screws. As a standard, the tuned transducer is tested once to ensure that its frequency peaks and valleys are sufficiently flat.

Figure 1 is a rear elevational view of a device constructed according to the invention; Figure 152 is a side view of the device taken along +fM22 in Figure 1; Figure 3 is a rear elevational view of another apparatus constructed in accordance with the present invention; Figure 4 is a view of the apparatus taken along line 4--4 in Figure 5; FIG. 5 is a side view of the F8J frequency response characteristic, showing the frequency response characteristic of the untuned transducer immediately after manufacture in red, and according to the method of the present invention. FIG. 3 shows the frequency response characteristic of the same transducer after being tuned in solid lines.

20 Nidoransjusa 22: Frame 24: MiJ opening 26: Tongue opening 28: Ear 30: Annular helical 40, 42: Flat plate 44.46: Boat 48: Center opening 50: th stone
52: Pole piece 54: Stationary coil 60: Group diaphragm 62: Reluctor plate 66: Cavity 70: 1 to 1% of the monthly charge layer Applicant: Berman International
Industries Incorporated agent patent attorney Takashi Goto Inu (1 person)? −
Amendment to the proceedings (method) Display of 1 case 1982 +? 5/F request No. 22669
No. 1 No. 2, Name of the invention: Transducer, method for tuning the length of the transducer, and transducer used in the tuning method 3, Relationship with the amended person's case Name of applicant for license: Berman International Industries.

Incoholated (1 other person) 5. Date of amendment order: February 8, 1982 (Date of dispatch: February 1982)
6. Subject of amendment (1) Submit the application on a separate sheet (2) Submit a power of attorney and a translation.

(3) Engraving of drawings (no changes in content) &Inventory of attached documents

Claims (1)

[Claims] (1) Provided to the first and second 16411'/
a second frame, a second diaphragm covering the first VH opening, a motor, and means for coupling the motor to the diaphragm such that operation of the motor excites the diaphragm; , the diaphragm has a chamber extending within the frame and behind the diaphragm, and further has a path 11! between the chamber and the second opening. 1. A transducer comprising: a handle having a rear end; and a tuning valve for selectively controlling air flowing through the second opening. (2) The transducer according to claim 1, wherein the transducer comprises a variable reluctance speaker. (3) The front Me motor includes a first magnet, a means for mounting the magnet in the frame, a transducer coil, and a front Me motor for producing diaphragm motion.
means for reacting to the i-field provided by the Q% stone and the transducer coil, and said reaction hand 1ff.
2. A transducer according to claim 2, characterized in that it comprises means for coupling to said diaphragm. (4) The reaction means consists of a reluctor plate, and the reaction means is placed in front of the riU2 diaphragm)! ! 40. The transducer according to claim 40, wherein: the sagging/clamping means comprises means for attaching to the diaphragm in front of the reluctor sheet metal. (5) A transducer as set forth in paragraph 3 of the scope of Patent d, characterized in that the transducer is suspended in ten stages for stationary mounting of the transducer coil with respect to the magnet. (6) The regulating valve includes a plate covering the second opening, means for attaching the plate for movement relative to the second opening, and means for imparting a boat to the plate. Claim 1 consisting of
The transducer described in section. (Force) The valve includes a plate covering the second opening, means for mounting the plate for movement with respect to the second opening, and means for imparting a boat to the plate, Means for attaching a compressible material between the frame and the plate and movable with respect to the second aperture is provided between the second aperture and the plate. 8. The transducer of claim 1 further comprising means for selectively compressing the compressible material between the transducer and the boat. The first covering the second opening
a plate, means for fixedly mounting said first plate over said opening, means for providing a boat to said first plate, a second plate, and said first plate. 2. A device according to claim 1, further comprising means for attaching said second plate for movement relative to said second plate; and means for providing a port metal on said second plate. transducer. (9) The regulating valve includes a first plate covering the second opening, and means for providing a boat to the first plate;
a second plate; means for attaching said second plate for movement relative to said first plate; and means for providing a boat to said second plate; and said first and second plates; a porous, compressible piece held between the first and second plates, and means for accessing the second plate for movement with respect to the first plate; 2. A transducer as claimed in claim 1, including means for selectively compressing the spectroposable material in the transducer. utll) A method for tuning the frequency response of a transducer having first and second apertures;
the opening in M1 is covered by a diaphragm to provide a transducer frame securing the cavity behind and within the diaphragm; and providing a path between the cavity and the second 114 port; the steps include: flowing air 1r through said second opening; providing a tuning valve for selectively driving a motor element of said transducer; and testing the response of said transducer; adjusting the regulating valve. 11. The method of claim 10, further comprising the step of testing the transducer response after adjusting the regulating valve. u21 a transducer frame having a first and a second aperture, the first aperture being covered by a diaphragm to define a cavity behind the diaphragm and within itself; providing a passageway between the second opening and the second aperture, providing a tuning chamber for selectively altering the metal flow through the second aperture, driving the motor element of the transducer, testing the response of the transducer; An attuned transuser obtained by abating one's own valve. 13. The transducer according to claim 12, wherein the transducer response is a red tone distortion type after the valve is adjusted.