Speaker

A loudspeaker and damper technology, applied in the field of thin and small loudspeakers, can solve the problems of loss of thinness of the loudspeaker, inability to increase the distance between the frame and the vibration plate, etc. Effect

Inactive Publication Date: 2010-12-22
HOSIDEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In conventional thin and compact speakers, a damper is added between the diaphragm and the lower frame to support the upper part of the voice coil bobbin. However, there is a problem that the thinness of the speaker is lost due to the addition of the damper. , and the distance between the frame and the vibration plate cannot be increased in a thin speaker. Although a damper is added, if a large power is input, the vibration system cannot vibrate correctly and roll

Method used

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no. 1 example

[0030] figure 1 is a sectional view of the speaker according to the first embodiment of the present invention. The loudspeaker 1 consists of a bottomed cylindrical yoke 2, a cylindrical magnet 3 and a disc-shaped pole piece 4 to form a circular inner magnetic magnetic circuit 5, wherein the yoke 2 is formed of magnetic materials , the magnet 3 is formed by a permanent magnet, and is loaded and fixed in the yoke 2, and the pole piece 4 is formed by a magnetic material, and is fixed on the upper surface of the magnet 3, between the pole piece 4 and the yoke 2 The magnet 3 is sandwiched between the bottom plate parts. The diameter of the pole shoe 4 is smaller than the inner diameter of the yoke 2, and the gap between the outer peripheral surface of the pole shoe 4 facing the radial direction of the magnetic circuit 5 and the inner peripheral surface of the circumferential side wall of the yoke 2 forms a magnetic gap 6 of the magnetic circuit 5 . The diameter of the magnet 3 i...

no. 2 example

[0054] Figure 4 It is an enlarged cross-sectional view of a main part of a speaker according to a second embodiment of the present invention. This loudspeaker 30 is provided with a damper 14a integrally formed with the voice coil bobbin 12 instead of the damper 14 of the loudspeaker 1 in the first embodiment, which is different from the loudspeaker 1 of the first embodiment, and the other structures are the same as those of the first embodiment. The speaker 1 of one embodiment is the same, and therefore the same reference numerals are attached to the same structure, and detailed description thereof will be omitted. As shown in the speaker 30 of this embodiment, since the damper 14a is integrated with the voice coil bobbin 12, the number of parts and the number of assembly steps of the vibration system 13 can be reduced, thereby improving productivity.

no. 3 example

[0056] Figure 5It is an enlarged cross-sectional view of a main part of a speaker according to a third embodiment of the present invention. This speaker 40 is provided with a voice coil bobbin 12a integrated with the dome portion 9a of the diaphragm 9 instead of the voice coil bobbin 12 of the speaker 1 of the first embodiment, and the damper 14 is formed with the voice coil bobbin 12a integrated with the dome portion 9a of the diaphragm 9. The bobbin 12a is different from the speaker 1 of the first embodiment in that it is different from the speaker 1 of the first embodiment, and the other structures are the same as the speaker 1 of the first embodiment, so the same reference numerals are assigned to the same structures, and details are omitted. illustrate. As shown in the speaker 40 of this embodiment, since the damper 14 and the voice coil bobbin 12a are formed separately, and the voice coil bobbin 12a is integrated with the dome portion 9a of the diaphragm 9, the number ...

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PUM

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Abstract

The invention provides a speaker in which a damper is effectively added without impairing the thinness of the speaker, and which, although the speaker is thin and small, exhibits high withstand input and high output power performances. A damper (14) is disposed between the lower end of a voice coil bobbin (12) and a magnet (3) of a magnetic circuit (5), and supports a vibration system (13) in a manner that the system is vibratable with respect to the magnet (3).

Description

technical field [0001] The present invention relates to a thin and compact speaker used in headphones, earphones, headsets, mobile phones, and the like. Background technique [0002] Conventionally, there has been known a thin and compact speaker (see Patent Document 2) that employs a damper (see Patent Document 1) of a typical structure among large speakers. The damper works together with the edge portion around the vibrating plate to hold the vibrating system in the correct position and make the vibrating system vibrate correctly. [0003] Patent Document 1: JP Unexamined Publication No. 7-203585; [0004] Patent Document 2: JP Unexamined Patent Publication No. 2000-209693. [0005] In conventional thin and compact speakers, a damper is added between the diaphragm and the lower frame to support the upper part of the voice coil bobbin. However, there is a problem that the thinness of the speaker is lost due to the addition of the damper. , and the distance between the fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/02H04R9/06
CPCH04R2201/34H04R2400/11H04R9/043
Inventor 上村智彦汤浅英夫
Owner HOSIDEN CORP
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