CN105681986B

CN105681986B - Electroacoustic transducer convenient to installation

Info

Publication number: CN105681986B
Application number: CN201610188826.4A
Authority: CN
Inventors: 董卫童
Original assignee: Gaoyou Huasheng Electronics Co ltd
Current assignee: Gaoyou Huasheng Electronics Co ltd
Priority date: 2016-03-30
Filing date: 2016-03-30
Publication date: 2021-08-13
Anticipated expiration: 2036-03-30
Also published as: CN105681986A

Abstract

The invention discloses an electroacoustic transducer convenient to mount in the technical field of electroacoustic transducers, which comprises a binding post, a magnetic yoke, a vibrating plate, a vibrating diaphragm, a base, a box bottom for packaging all the parts and a bound shell for sealing the box bottom, wherein the binding post is arranged on the box bottom; the magnetic yoke comprises pole shoes, magnetic steel, two coil frameworks and coils wound on the coil frameworks; the pole shoe comprises two pole shoe fixing parts which are oppositely arranged and also comprises two pole shoe inserting parts which are used for sleeving two coil frameworks; each coil framework comprises a framework upper supporting surface which is abutted against the pole shoe, a framework lower supporting surface and two supporting legs which are arranged at two ends of the bottom of the framework lower supporting surface and are in pressure contact with the base; and a channel for penetrating the pole shoe insertion part is arranged in each coil skeleton. The invention has simple structure, convenient installation, no need of adhesive and good fixing effect.

Description

Electroacoustic transducer convenient to installation

Technical Field

The invention relates to the technical field of electroacoustic transducers, in particular to an electroacoustic transducer convenient to mount.

Background

In the prior art, an electroacoustic transducer comprises a binding post, a magnetic yoke, a vibrating piece, a vibrating diaphragm, a base, a box bottom for packaging all the parts, and a bound shell for sealing the box bottom, wherein a sound outlet hole is formed in the center of the bound shell; the magnetic yoke comprises pole shoes, magnetic steel fixedly arranged at the center of the pole shoes, two coil frameworks and coils wound on the coil frameworks; the center of the base is provided with a center hole through which the vibrating diaphragm can conveniently penetrate, one end of the base is provided with two mounting holes for fixedly mounting a binding post, and the other end of the base is detachably provided with a magnetic yoke and a vibrating piece through screws; the wiring terminal is provided with two wiring lugs, and the two wiring lugs are respectively used for connecting two coils; the center position of the upper surface of the vibrating plate is provided with a bulge which always abuts against the center position of the bottom of the magnetic steel; a vibrating rod is arranged at one end of the vibrating plate and positioned in the center of the base, and the vibrating rod is arranged at the top of the vibrating plate in a penetrating manner;

the during operation, make the coil let in the audio frequency electric signal of certain power and convert the moving magnetic field into the continuous change through the terminal, make the magnetic attraction that the both ends received of trembler be in the state of continuous change, because the arch of trembler is supporting the central point of magnet steel all the time and is putting, the trembler will use the arch constantly to carry out reciprocating type swing as the fulcrum, thereby drive the vibration rod vibration of setting in trembler one end, the vibrating diaphragm is worn to adorn by the vibrating rod, thereby it vibrates to drive the vibrating diaphragm, because the center of package limit shell is equipped with the phonate hole, direct excitation air converts the mechanical energy of vibrating diaphragm vibration into acoustic energy and exports from the phonate hole.

However, the electroacoustic transducers used in the market have the following problems: the coil skeleton used for the magnet yoke part of the electroacoustic transducer is generally of a symmetrical structure and is fixed on the pole shoe through an adhesive, and the pole shoe vibrates in the channel due to the fact that the channel used for penetrating through the pole shoe is arranged inside the coil skeleton, so that the pole shoe is used for a long time, the adhesive effect of the adhesive is reduced, the adhesive is easy to loosen, the normal use of the electroacoustic transducer is influenced, the service life is shortened, and meanwhile, the installation is inconvenient.

Disclosure of Invention

The invention aims to provide the electroacoustic transducer which is simple in structure, reasonable in design, convenient to install, free of adhesive and good in fixing effect, is convenient to install and is suitable for mass production.

The purpose of the invention is realized as follows: an electroacoustic transducer convenient to mount comprises a binding post, a magnetic yoke, a vibrating plate, a vibrating diaphragm, a base, a box bottom and a bound shell, wherein the box bottom is used for packaging all the parts; the magnetic yoke comprises pole shoes, magnetic steel fixedly arranged at the center of the pole shoes, two coil frameworks and coils wound on the coil frameworks; the center of the base is provided with a center hole through which the vibrating diaphragm can conveniently penetrate, one end of the base is provided with two mounting holes for fixedly mounting a binding post, and the other end of the base is detachably provided with a magnetic yoke and a vibrating piece through screws; the wiring terminal is provided with two wiring lugs, and the two wiring lugs are respectively used for connecting two coils; the center position of the upper surface of the vibrating plate is provided with a bulge which always abuts against the center position of the bottom of the magnetic steel; a vibrating rod is arranged at one end of the vibrating plate and positioned in the center of the base, and the vibrating rod is arranged at the top of the vibrating plate in a penetrating manner;

the pole shoe comprises two pole shoe fixing parts which are oppositely arranged and also comprises two pole shoe inserting parts which are used for sleeving two coil frameworks; a vibrating reed is arranged below the pole shoes, and a gap which is convenient for the vertical vibration of the two ends of the vibrating reed is reserved between the vibrating reed and the two pole shoe insertion parts; two annular gaskets are arranged below two ends of the vibrating piece, and the two pole shoe fixing parts, the vibrating piece and the two annular gaskets are pressed on the base through two screws;

each coil framework comprises a framework upper supporting surface and a framework lower supporting surface, wherein the framework upper supporting surface is abutted against the pole shoe, the framework lower supporting surface and two supporting legs are arranged at two ends of the bottom of the framework lower supporting surface and are in pressure contact with the base; the upper supporting surface of the framework is of a rounded rectangular structure, and two ends of the lower supporting surface of the framework are of triangular structures;

the two pole shoe fixing parts press the upper supporting surface of the framework through screws and press the two supporting legs of the coil framework against the base.

Compared with the prior art, the invention has the beneficial effects that: because two pole shoe insertion portions wear the coil skeleton, the supporting surface on the skeleton is in contact with the pole shoes, and two supporting legs at the bottom of the skeleton lower supporting surface are in contact with the base.

As a preferable scheme of the present invention, the width of the framework lower supporting surface is the same as the width of the framework upper supporting surface, and the length of the framework lower supporting surface is greater than the length of the framework upper supporting surface.

As a further preferable aspect of the present invention, the thickness of the lower supporting surface of the frame is larger than the thickness of the upper supporting surface of the frame.

In a further preferred embodiment of the present invention, the material of the bobbin is polyethylene plastic having good toughness and good insulation properties.

Drawings

FIG. 1 is a main sectional view of the present invention.

Fig. 2 is a top view of the yoke and base in assembled relation of fig. 1.

Fig. 3 is a diagram showing the assembled relationship of the pole shoe and the bobbin.

Fig. 4 is a top view of the bobbin of fig. 3.

Fig. 5 is a bottom view of the bobbin of fig. 3.

Fig. 6 is a right side view of the bobbin of fig. 3.

The vibration isolation device comprises a box bottom 1, a pole shoe 2, magnetic steel 3, a binding post 4, a screw 5, a wrapping shell 6, a vibrating diaphragm 7, a gasket 8, a base 9, a vibrating diaphragm 10, a coil 11, a coil skeleton 12, a central hole 13, a mounting hole 14, a sound outlet hole 15, a lug plate 16, a skeleton lower supporting surface 17, a skeleton upper supporting surface 18, a pole shoe fixing part 19, a supporting leg 20, a pole shoe insertion part 21, a channel 22, a bulge 23 and a vibrating rod 24.

Detailed Description

As shown in fig. 1 to 6, an electroacoustic transducer convenient for installation comprises a binding post 4, a magnetic yoke, a vibrating reed 10, a vibrating diaphragm 7, a base 9, a case bottom 1 for encapsulating all the above parts, and a taping case 6 for sealing the case bottom 1, wherein a sound outlet 15 is formed in the center of the taping case 6; the magnetic yoke comprises a pole shoe 2, magnetic steel 3 fixedly arranged at the center of the pole shoe 2, two coil frameworks 12 and coils 11 wound on the coil frameworks 12; a central hole 13 for the vibrating diaphragm 7 to pass through is formed in the center of the base 9, two mounting holes 14 for fixedly mounting the wiring terminals 4 are formed in one end of the base 9, and a magnetic yoke and the vibrating reed 10 are detachably mounted at the other end of the base 9 through screws 5; two lugs 16 are arranged on the binding post 4, and the two lugs 16 are respectively used for connecting the two coils 11; a bulge 23 is arranged at the center of the upper surface of the vibrating piece 10, and the bulge 23 always abuts against the center of the bottom of the magnetic steel 3; a vibrating rod 24 is arranged at one end of the vibrating reed 10 and positioned in the center of the base 9, and the vibrating rod 24 is arranged at the top of the vibrating diaphragm 7 in a penetrating manner;

the pole shoe 2 comprises two pole shoe fixing parts 19 which are oppositely arranged, and also comprises two pole shoe insertion parts 21 which are used for sleeving the two coil frameworks 12; a vibrating piece 10 is arranged below the pole shoe 2, and a gap facilitating the up-and-down vibration of two ends of the vibrating piece 10 is reserved between the vibrating piece 10 and the two pole shoe insertion parts 21; two circular gaskets 8 are arranged below two ends of the vibrating piece 10, and two pole shoe fixing parts 19, the vibrating piece 10 and the two circular gaskets 8 are pressed on the base 9 through two screws 5;

each coil framework 12 comprises a framework upper supporting surface 18 which is abutted against the pole shoe 2, a framework lower supporting surface 17 and two supporting legs 20 which are arranged at two ends of the bottom of the framework lower supporting surface 17 and are in pressure contact with the base 9, and a channel 22 for penetrating a pole shoe insertion part 21 is arranged in each coil framework 12; the framework upper supporting surface 18 is of a rounded rectangular structure, and two ends of the framework lower supporting surface 17 are of triangular structures;

the two pole shoe fixing portions 19 press the bobbin upper supporting surface 18 downward by the screws 5 and press the two legs 20 of the bobbin 12 against the base 9.

The width of the framework lower supporting surface 17 is consistent with that of the framework upper supporting surface 18, and the length of the framework lower supporting surface 17 is greater than that of the framework upper supporting surface 18.

The thickness of the lower frame support surface 17 is greater than the thickness of the upper frame support surface 18.

The coil bobbin 12 is made of polyethylene plastic having good toughness and good insulation.

The working principle of the invention is explained as follows, a vibrating piece 10 is arranged below a pole shoe 2, two gaskets 8 are arranged below two ends of the vibrating piece 10, and two screws 5 sequentially lock two pole shoe fixing parts 19, the vibrating piece 10 and the two gaskets 8 on a base 9 from top to bottom; meanwhile, the coil framework 12 is arranged in the pole shoe insertion part 21 in a penetrating mode, at the moment, the framework upper supporting surface 18 of each coil framework 12 is abutted to the pole shoe 2, the two supporting legs 20 of each coil framework 12 are in pressure contact with the base 9, the pole shoe 2 presses the framework upper supporting surface 17 downwards to enable the two supporting legs 20 of the coil framework 12 to be abutted to the base 9 through locking of the screw 5, the coil framework 12 can achieve a good fixing effect in the electroacoustic transducer without adhesives, and the structure is simple and convenient to install.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. An electroacoustic transducer convenient to mount comprises a binding post (4), a magnetic yoke, a vibrating plate (10), a vibrating diaphragm (7), a base (9), a box bottom (1) for packaging all the parts and a bound shell (6) for sealing the box bottom (1), wherein the center of the bound shell (6) is provided with a sound outlet (15); the magnetic yoke comprises a pole shoe (2), magnetic steel (3) fixedly arranged at the center of the pole shoe (2), two coil frameworks (12) and coils (11) wound on the coil frameworks (12); a center hole (13) through which the vibrating diaphragm (7) can pass is formed in the center of the base (9), two mounting holes (14) for fixedly mounting the wiring terminals (4) are formed in one end of the base (9), and a magnet yoke and the vibrating reed (10) are detachably mounted at the other end of the base (9) through screws (5); two lugs (16) are arranged on the binding post (4), and the two lugs (16) are respectively used for connecting two coils (11); a bulge (23) is arranged at the center of the upper surface of the vibrating piece (10), and the bulge (23) always abuts against the center of the bottom of the magnetic steel (3); a vibrating rod (24) is arranged at one end of the vibrating piece (10) and is positioned at the center of the base (9), and the vibrating rod (24) is arranged at the top of the vibrating piece (7) in a penetrating mode;

the method is characterized in that:

the pole shoe (2) comprises two pole shoe fixing parts (19) which are oppositely arranged and two pole shoe inserting parts (21) which are used for sleeving two coil frameworks (12); a vibrating piece (10) is arranged below the pole shoes (2), and a gap facilitating the up-and-down vibration of two ends of the vibrating piece (10) is reserved between the vibrating piece (10) and the two pole shoe insertion parts (21); two circular gaskets (8) are arranged below two ends of the vibrating piece (10), and two pole shoe fixing parts (19), the vibrating piece (10) and the two circular gaskets (8) are pressed on the base (9) through two screws (5);

each coil framework (12) comprises a framework upper supporting surface (18) which is abutted against the pole shoe (2), a framework lower supporting surface (17) and two supporting legs (20) which are arranged at two ends of the bottom of the framework lower supporting surface (17) and are in pressure contact with the base (9), and a channel (22) for penetrating a pole shoe inserting part (21) is arranged in each coil framework (12); the framework upper supporting surface (18) is of a rounded rectangular structure, and two ends of the framework lower supporting surface (17) are of triangular structures;

the two pole shoe fixing parts (19) press the framework upper supporting surface (18) downwards through the screws (5) and press the two supporting legs (20) of the coil framework (12) against the base (9).

2. An easy-to-install electroacoustic transducer according to claim 1, wherein: the width of the framework lower supporting surface (17) is consistent with that of the framework upper supporting surface (18), and the length of the framework lower supporting surface (17) is greater than that of the framework upper supporting surface (18).

3. An easy-to-install electroacoustic transducer according to claim 1, wherein: the thickness of the framework lower supporting surface (17) is larger than that of the framework upper supporting surface (18).

4. An easy-to-install electroacoustic transducer according to claim 1, wherein: the coil framework (12) is made of polyethylene plastic with good toughness and good insulation.