Source: http://www.google.com/patents/US20050084130?ie=ISO-8859-1&dq=5,072,412
Timestamp: 2015-05-24 11:42:26
Document Index: 414315214

Matched Legal Cases: ['art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20']

Patent US20050084130 - Voice coil insertion jig, speaker producing method using the jig, and ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA voice coil insertion jig is composed of hollow cylindrical insertion part 20 b formed in the lower part of a base for inserting a magnetic circuit, a plurality of moving pieces formed thereon, and a central boss provided above the base. The moving pieces elastically contact with and hold the inserted...http://www.google.com/patents/US20050084130?utm_source=gb-gplus-sharePatent US20050084130 - Voice coil insertion jig, speaker producing method using the jig, and speaker produced by using the jigAdvanced Patent SearchPublication numberUS20050084130 A1Publication typeApplicationApplication numberUS 10/501,468PCT numberPCT/JP2003/015125Publication dateApr 21, 2005Filing dateNov 27, 2003Priority dateDec 3, 2002Also published asCN1692678A, CN100566457C, EP1469704A1, EP1469704A4, US7350287, WO2004052051A1Publication number10501468, 501468, PCT/2003/15125, PCT/JP/2003/015125, PCT/JP/2003/15125, PCT/JP/3/015125, PCT/JP/3/15125, PCT/JP2003/015125, PCT/JP2003/15125, PCT/JP2003015125, PCT/JP200315125, PCT/JP3/015125, PCT/JP3/15125, PCT/JP3015125, PCT/JP315125, US 2005/0084130 A1, US 2005/084130 A1, US 20050084130 A1, US 20050084130A1, US 2005084130 A1, US 2005084130A1, US-A1-20050084130, US-A1-2005084130, US2005/0084130A1, US2005/084130A1, US20050084130 A1, US20050084130A1, US2005084130 A1, US2005084130A1InventorsKiyoshi YamagishiOriginal AssigneeKiyoshi YamagishiExport CitationBiBTeX, EndNote, RefManReferenced by (3), Classifications (13), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetVoice coil insertion jig, speaker producing method using the jig, and speaker produced by using the jig
US 20050084130 A1Abstract
A voice coil insertion jig is composed of hollow cylindrical insertion part 20 b formed in the lower part of a base for inserting a magnetic circuit, a plurality of moving pieces formed thereon, and a central boss provided above the base. The moving pieces elastically contact with and hold the inserted voice coil. The central boss function as a knob. Images(7) Claims(16)
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of voice coil insertion jig of the invention are described below while referring to FIG. 1A to FIG. 2C and FIG. 3. Same parts as in the prior art are identified with same reference numerals, and the explanation is omitted. (Preferred Embodiment 1) FIG. 1A is a top view of a preferred embodiment of voice coil insertion jig, FIG. 1B is a sectional view of A-O-B side in FIG. 1A, and FIG. 1C is a bottom view of the same. Voice coil insertion jig 20 is composed of base 20 a, hollow cylindrical insertion part 20 b provided in its lower part, plurality of moving pieces 20 c, and central boss 20 d. Plurality of moving pieces 20 c are provided integrally in the upper part of base 20 a, being apart from each other, and the outer circumference is formed as an arc of a nearly same circumference. The diameter in the upper parts of plurality of moving pieces 20 c is constant, and the diameter is smaller in the lower parts, that is, a slope is provided. Central boss 20 d disposed apart from moving pieces 20 c is formed so as to extend upward from the center of base 20 a. The outer circumference is opposite to plurality of moving pieces 20 c across a specified gap. Moving piece 20 c has horizontal slit 20 e at its lower outer side. Moving pieces 20 c formed integrally in base 20 a are separated by vertical slit 20 f. Slit 20 f is formed for reducing the outside diameter formed by moving pieces 20 c when inserting voice coil insertion jig 20 into voice coil 4, or when extracting voice coil insertion jig 20 from voice coil 4. Therefore, the width of slit 20 f is not particularly defined as far as moving pieces 20 c can be inclined for inserting and extracting process (it is further preferred to set the slit width to such an extent that moving pieces 20 c may not be inclined over the limit of elasticity for the sake of inserting and extracting process). Diameter d1 of outer circumference of base 20 a and insertion part 20 b, and diameter d2 formed by upper parts of moving pieces 20 c in ordinary state are in the relation of d2>d1. The diameter of outer circumference formed by the lowest end parts of the outer side of moving pieces 20 c is set nearly at d1, and this d1 is set to be equal to the inner circumference of voice coil 4. As clear from FIG. 1A, moving pieces 20 c are polygonal (tetragonal in the preferred embodiment) at the inner wall side, and its the apex, vertical slit 20 f is formed as stated above. The slit width represents the interval of mutually opposing sides of moving pieces 20 c. Central boss 20 d is formed longer than moving pieces 20 c, and it is used as a knob in the working process. Magnetic gap 1 e between voice coil 4 and magnetic circuit 1 is assured by the thickness of insertion part 20 b. (The outer circumference of center pole 1 b of magnetic circuit 1 and the inner circumference of insertion part 20 b are nearly equal, and only a slight allowance for insertion during assembling process is provided, and the interval between the outer circumference of center pole 1 b and voice coil 4 is assured by the thickness of insertion part 20 b, and hence an interval between upper plate 1 d and voice coil 4 is also assured.) An assembling method of a speaker is explained. By pushing moving pieces 20 c of voice coil insertion jig 20 to the inner side to deform within an elastic deforming range, voice coil insertion jig 20 is inserted into voice coil 4. After inserting up to a specified position, the inward pushing force applied to moving pieces 20 c is released. As a result, moving pieces 20 c elastically contact with the inner side of voice coil 4 in the restoring process. Thus, voice coil 4 is held in voice coil insertion jig 20. While holding voice coil 4, insertion part 20 b is fitted into center pole 1 b of magnetic circuit 1 preliminarily adhered and coupled to frame 2, and inserted into magnetic gap 1 e. In succession, damper 5 and diaphragm 3 are adhered to frame 2 and coil bobbin 4 b as shown in FIG. 3. Then, with moving pieces 20 c being pushed to the central boss side, insertion jig 20 is pulled out. Finally, dust cap 6 is adhered to diaphragm 3. In this manner, by using voice coil insertion jig 20 of the preferred embodiment, positioning and fixing of voice coil 4, and handling when assembling the speaker can be done easily by using moving pieces 20 c and central boss 20 d, so that the working efficiency can be enhanced. Further, since insertion part 20 b does not have slit 13 as in the prior art, but is a hollow tube, deformation of voice coil 4 can be prevented. Moreover, magnetic gap 1 e depends only on the thickness of this insertion part 20 b, so that magnetic gap 1 e can be assured stably. Hence, magnetic gap 1 e can be narrowed, and the magnetic efficiency is enhanced and higher output is realized, while the magnetic circuit is reduced in size and the weight of the speaker can be also reduced. In the preferred embodiment, a speaker having damper 5 is explained, but it can be similarly applied to a speaker without damper. (Preferred Embodiment 2) Other preferred embodiment of the invention is explained by referring to a top view of the other preferred embodiment of voice coil insertion jig in FIG. 2A, a sectional view of A-O-B side of FIG. 2A in FIG. 2B, and a bottom view of the same in FIG. 2C. In the following explanation, same parts as in preferred embodiment 1 are identified with same reference numerals, and the explanation is omitted. Only different points from preferred embodiment 1 are described below. A first different point is that center pin 20 g is provided in insertion part 20 b. Center pin 20 g is formed downward in the center of base 20 a. In the center of center pole 1 b, a hole (not shown) for inserting center pin 20 g is formed. In the manufacturing process, by inserting center pin 20 g into the hole formed in center pole 1 b, voice coil 4 is positioned. As a result, same as in preferred embodiment 1, it is not required to position voice coil 4 by defining the outer circumference of center pole 1 b same as the diameter of inner circumference of insertion part 20 b as much as possible, and by inserting center pin 20 g, it is easier to position voice coil 4 than in preferred embodiment 1, and also voice coil 4 can be positioned without depending on the diameter of center pole 1 b, so that the jig can be managed easily without preparing insertion jig 20 for the portion of difference in outside diameter of center pole 1 b. INDUSTRIAL APPLICABILITY As described herein, the invention presents a voice coil insertion jig capable of assembling a speaker at excellent working efficiency and high precision without deforming the voice coil, a manufacturing method using the same, and a speaker manufactured by this method. Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8070729Jul 15, 2009Dec 6, 2011YMED, Inc.Systems and methods for treating a vessel using focused forceUS8167929Mar 8, 2007May 1, 2012Abbott LaboratoriesSystem and method for delivering a stent to a bifurcated vesselUS8262621Jan 19, 2011Sep 11, 2012YMED, Inc.Systems and methods for treating a vessel using focused forceClassifications U.S. Classification381/400, 381/423, 381/408International ClassificationH04R31/00, H04R9/04Cooperative ClassificationY10T29/5313, Y10T29/4908, H04R31/006, H04R2209/024, H04R9/045, Y10T29/49073, Y10T29/49005European ClassificationH04R31/00FLegal EventsDateCodeEventDescriptionMay 22, 2012FPExpired due to failure to pay maintenance feeEffective date: 20120401Apr 1, 2012LAPSLapse for failure to pay maintenance feesNov 14, 2011REMIMaintenance fee reminder mailedAug 26, 2008CCCertificate of correctionJul 29, 2008CCCertificate of correctionJul 14, 2004ASAssignmentOwner name: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., JAPANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YAMAGISHI, KIYOSHI;REEL/FRAME:016090/0258Effective date: 20040609RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services