KR19980046035A - Car Audio's Dual Magnetic Circuit Bass Speaker - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual magnetic circuit bass speaker structure of car audio, wherein a ring-shaped first magnet having an insertion hole 12 formed in a first pole piece 6 protruding upward from a first lower plate 4 is provided. Inserting the first upper plate 14 having a ring shape having the insertion hole 12 formed in the first pole piece 6 and adhering the first pole piece 6 to the first magnet 10 A magnetic circuit portion formed by inserting the outer circumferential surface of the lower end of the bobbin 16 wound around the lower end of the bobbin 16 in a cylindrical shape between the outer circumferential surface of the piece 6 and the first magnet 10 and the first upper plate 14. 2) and a ring having an insertion hole 12 formed in the second upper plate 24 protruding downward from the second pole piece 26 coupled to the first pole piece 6 of the magnetic circuit part 2. A ring-shaped shape in which a second magnet 30 having a shape is inserted into the second pole piece 26 and bonded to each other, and an insertion hole 12 is formed in the second pole piece 26. The second lower plate 32 is inserted and adhered to the second magnet 30, and the voice coil is disposed at the upper end between the outer circumferential surface of the second pole piece 26 and the second magnet 30 and the second lower plate 32. An auxiliary magnetic circuit part 22 is formed by inserting the outer peripheral surface of the bobbin 16 wound around the coil 18 to generate a driving force in the same direction as the driving force generated in the magnetic circuit part 2, and the efficiency and characteristics of the bass speaker. Will be improved.

Description

Car Audio's Dual Magnetic Circuit Bass Speaker

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual magnetic circuit low speaker structure of a car audio. The present invention relates to a dual magnetic circuit low speaker structure of a car audio system in which an auxiliary magnetic circuit is installed in an existing magnetic circuit installed in a low sound speaker to improve efficiency and characteristics of low sound will be.

As shown in FIG. 1, the conventional bass speaker structure has a ring shape having a lower plate 72 protruding the pole piece 74 upward and an insertion hole 76 inserted into the pole piece 74. The upper plate 80 for adhering to the magnet 78 in a ring shape having a magnet 78 for adhering to the lower plate 72, the insertion hole 76 is inserted into the pole piece 74, and the pole A bobbin 82 inserted between the outer circumferential surface of the piece 74 and the insertion hole 76 of the magnet 78 and the inner circumferential surface of the insertion hole 76 of the upper plate 80 and wound around the lower end of the voice coil 84; The outer periphery of the bobbin 82 is adhered to the inner circumferential end of the small diameter, and the outer periphery of the large diameter is fixed to the fixed frame 92, and the dust cap 88 adheres to the inside of the conical vibration plate 86; And, it is composed of a damper (90) for adhering the bobbin insertion hole to the cone-shaped vibration plate (86) and for attaching the outer circumferential surface to the fixing frame (92).

As such, the configured bass speaker structure is the bobbin 82 vibrates when the power is applied to the magnetic circuit portion 70 consisting of the lower plate 72, the upper plate 80 and the magnet 78, the bobbin (according to the vibration) The cone-shaped vibration plate 86 adhered to 82 vibrates to radiate low sound waves forward.

In order to improve the efficiency and characteristics of the bass loudspeakers as described above, the size of the magnetic circuit 70 should be increased. In order to increase the size of the magnetic circuit 70, the size of the magnet 78 is infinite. There was a problem that cannot be enlarged.

The present invention has been made in view of the conventional problems, the technical problem of the present invention is to install the auxiliary magnetic circuit portion for generating a driving force in the same direction as the driving force generated in the magnetic circuit portion in the existing magnetic circuit installed in the bass speaker By multiplying the driving force generated by the speaker, the efficiency and characteristics of the bass are improved.

The technical problem of the present invention is a ring shape in which a ring-shaped first magnet having an insertion hole formed thereon is attached to the first pole piece protruding upward from the first lower plate, and the insertion hole is formed in the first pole piece. A first upper plate of which is adhered to the first magnet, and a lower end of the bobbin wound around the first coil and the first magnet and the first upper plate in a cylindrical shape with a voice coil wound around the bottom of the bobbin. A second ring-shaped magnet having an insertion hole formed in the second upper plate in which the circuit portion and the second pole piece which is coupled to the first pole piece of the magnetic circuit portion protrude downward, is fitted to the second pole piece and adhered to the second pole piece. A second ring-shaped lower plate having an insertion hole is inserted into the second pole piece and bonded to the second magnet. The outer circumferential surface of the second pole piece and the second magnet Car audio dual magnetic circuit bass speaker structure consisting of an auxiliary magnetic circuit portion that is formed by inserting the upper outer peripheral surface of the bobbin wound around the upper coil between the lower plate and the driving force in the same direction as the driving force generated in the bass magnetic circuit portion It is achieved by providing.

1 is a cross-sectional view showing a conventional bass speaker structure.

Figure 2 is an exploded perspective view showing a dual magnetic circuit bass speaker structure according to the present invention.

Figure 3 is a cross-sectional view showing a dual magnetic circuit bass speaker structure according to the present invention.

〈Description of the symbols for the main parts of the drawings〉

2: magnetic circuit portion 4: first lower plate

6: first pole piece 8: screw hole

10: first magnet 12: insertion hole

14: first upper plate 16: bobbin

18: voice coil 20: cone type diaphragm

22: auxiliary magnetic circuit portion 24: the second upper plate

26: second pole piece 28: screw

30: second magnet 32: second lower plate

34: cap

Hereinafter, the present invention will be described with reference to the drawings.

The dual magnetic circuit bass speaker structure of the car audio according to the present invention has an insertion hole 12 in the first pole piece 6 protruding upward from the first lower plate 4, as shown in FIGS. 2 and 3. A ring-shaped first magnet 10 having a shape of a ring-shaped first magnet 10 and a ring-shaped first upper plate 14 having a hole 12 formed therein into the first pole piece 6 to insert a first magnet ( 10) and a lower end of the bobbin 16 wound around the outer surface of the first pole piece 6 and the first coil 10 and the first upper plate 14 in a cylindrical shape with the voice coil 18 wound on the lower end thereof. A magnetic circuit portion 2 formed by inserting an outer circumferential surface thereof, and a second upper plate 24 protruding downward from the second pole piece 26 coupled to the first pole piece 6 of the magnetic circuit portion 2. The ring-shaped second magnet 30 having the insertion hole 12 formed therein is bonded to the second pole piece 26 and bonded to the second pole piece 26. A ring-shaped second lower plate 32 formed with 12 is inserted and bonded to the second magnet 30, and the outer circumferential surface of the second pole piece 26, the second magnet 30 and the second lower plate are formed. Between the (32) is inserted into the upper outer peripheral surface of the bobbin 16 wound around the voice coil 18 to the auxiliary magnetic circuit portion 22 to generate a driving force in the same direction as the driving force generated in the magnetic circuit portion (2) In the magnetic circuit part 2, a screw hole 8 is formed in the upper end surface of the first pole piece 6 of the first lower plate 4, and the second magnetic piece 22 is formed in the auxiliary magnetic circuit part 22. ) At the bottom surface, the screw 28 is fastened to the screw hole 8 of the first pole piece 6 of the magnetic circuit portion 2, and the auxiliary magnetic circuit portion 22 is supported by the second upper plate 24. Cap 34 to protect the appearance of the magnetic circuit portion 22 is covered.

In order to make the direction of the driving force generated in the auxiliary magnetic circuit unit 22 and the magnetic circuit unit 2 of the dual magnetic circuit low speaker structure of the car audio as described above, the bobbin 16 has a voice coil 18 at the upper and lower ends. Winding in the same direction with each other, the first magnet 10 and the second magnet 30 are installed in the same direction, or the bobbin 16 is wound around the voice coil 18 in the upper and lower ends, and the first magnet ( 10) and the second magnet 30 are installed in opposite directions to each other.

The assembly process of the dual magnetic circuit bass speaker structure of the car audio according to the present invention configured as described above will be described in more detail as follows.

The insertion hole 12 of the first magnet 10 is inserted into the outer circumferential surface of the first pole piece 6 protruding upward from the first lower plate 4 and adhered to the upper surface of the first lower plate 4 with an adhesive. Then, the insertion hole 12 of the first upper plate is inserted into the outer circumferential surface of the first pole piece 6 and bonded to the first magnet 10 with an adhesive, and then bobbin 16 wound around the voice coil 18 at the upper and lower ends. The lower outer peripheral surface of the first pole piece 6 is inserted between the outer peripheral surface and the insertion hole 12 of the first magnet 10, the first upper plate 14 to assemble the magnetic circuit portion (2).

Then, the insertion hole 12 of the second magnet 30 is inserted into the outer circumferential surface of the second pole piece 26 protruding downward from the second upper plate 24 to be adhered to the second upper plate 24 with an adhesive. In addition, the insertion hole 12 of the second lower plate 32 is inserted into the outer circumferential surface of the second pole piece 26 and bonded to the second magnet 30 with an adhesive, and then the upper outer circumferential surface of the bobbin 16 is attached to the second circumferential surface. The screw 28 of the second pole piece 26 is inserted into the space between the outer circumferential surface of the pole piece 26 and the second magnet 30 and the second lower plate 32. When it is fastened to the slot 8, the auxiliary magnetic circuit part 22 is assembled and at the same time, the magnetic circuit part 2 and the auxiliary magnetic circuit part 22 are assembled, and the second upper plate 24 of the auxiliary magnetic circuit part 22 The cap 34 which protects the external appearance of the auxiliary magnetic circuit part 22 is covered.

At this time, if the direction of the voice coil 18 wound on the upper and lower ends of the bobbin 16 is the same, the magnetic force of the first magnet 10 and the second magnet 30 are installed to be the same, and wound around the upper and lower ends of the bobbin 16. If the direction of the voice coil 18 is reversed, it is provided so that the direction of the magnetic force of the 1st magnet 10 and the 2nd magnet 30 may be reversed.

The operation of the dual magnetic circuit bass speaker structure of the car audio assembled as described above is as follows.

When a current is applied to the lower voice coil 18 of the bobbin 16, a driving force is generated in the magnetic circuit unit 2, the bobbin 16 vibrates and at the same time a current is applied to the upper voice coil 18 of the bobbin 16. The driving force in the same direction as the direction of the driving force generated in the magnetic circuit part 2 is generated in the auxiliary magnetic circuit part 22 to double the vibration amplitude of the bobbin 16 and to attach the adhesive cone-shaped vibration plate 20 to the bobbin 16. ) Doubles the vibration, improving efficiency and characteristics of the bass.

As described above, the dual audio circuit low speaker structure of the car audio according to the present invention is provided by additionally providing an auxiliary magnetic circuit part in the conventional magnetic circuit part so that the direction of driving force generated in the magnetic circuit part and the auxiliary magnetic circuit part is the same. Double the vibration width of the cone-shaped vibration plate of the bass speaker has the effect of improving the efficiency and characteristics of the bass speaker.

Claims (5)

In the car audio bass speaker structure, The ring-shaped first magnet 10 having the insertion hole 12 formed therein is bonded to the first pole piece 6 protruding upward from the first lower plate 4 and bonded to the first pole piece 6. The ring-shaped first upper plate 14 having the insertion hole 12 is inserted and bonded to the first magnet 10, and the outer circumferential surface of the first pole piece 6, the first magnet 10 and the first A magnetic circuit portion 2 formed by inserting an outer circumferential surface of a lower end of the bobbin 16 wound around the upper plate 14 and having a voice coil 18 wound on the lower end in a cylindrical shape, A ring-shaped second in which an insertion hole 12 is formed in the second upper plate 24 in which the second pole piece 26 coupled to the first pole piece 6 of the magnetic circuit part 2 protrudes downward. The magnet 30 is inserted into the second pole piece 26 to be bonded to the second pole piece 26, and the second lower plate 32 having a ring shape having the insertion hole 12 formed therein is inserted into the second magnet ( 30 is inserted into the upper circumferential surface of the bobbin 16 wound around the voice coil 18 on the upper end between the outer circumferential surface of the second pole piece 26 and the second magnet 30 and the second lower plate 32. Car audio dual magnetic circuit woofer speaker structure, characterized in that consisting of the auxiliary magnetic circuit portion 22 for generating a driving force in the same direction as the driving force generated in the magnetic circuit portion (2). 2. The magnetic circuit portion (2) according to claim 1, wherein a screw hole (8) is formed in the upper end surface of the first pole piece (6) of the first lower plate (4), and the second magnetic piece (22) is formed in the auxiliary magnetic circuit portion (22). (26) Car audio dual magnetic circuit woofer speaker structure, characterized in that the lower surface protrudes a screw (28) for fastening to the screw hole (8) of the first pole piece (6) of the magnetic circuit portion (2). 2. The dual magnetic circuit woofer of car audio according to claim 1, wherein the auxiliary magnetic circuit part 22 has a cap 34 that protects the appearance of the auxiliary magnetic circuit part 22 on the second upper plate 24. rescue. 2. The car bobbin according to claim 1, wherein the bobbin 16 is wound around the upper and lower ends of the voice coil 18 in the same direction, and the first magnet 10 and the second magnet 30 are provided in the same direction. Dual magnetic circuit woofer structure for audio. The bobbin 16 is wound on the upper and lower ends of the voice coil 18 in opposite directions, and the first magnet 10 and the second magnet 30 are installed in opposite directions. Dual magnetic circuit woofer structure for audio.