Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for manufacturing cylinderical case

A manufacturing method and shell technology, applied in the direction of manufacturing tools, feeding devices, positioning devices, etc., to achieve excellent productivity and improve productivity

Inactive Publication Date: 2009-01-14
NIDAI SEIKO CORP
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in order to maintain the characteristics of the microphone (electrostriction, sensitivity), it is necessary to install an insulating surface film on the inside of the cylindrical case.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manufacturing cylinderical case
  • Method for manufacturing cylinderical case
  • Method for manufacturing cylinderical case

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Specific embodiments of the manufacturing method of the cylindrical shell of the present invention will be described in detail below with reference to the accompanying drawings. image 3 It is an enlarged cross-sectional view of the cylindrical casing 1 manufactured by this cylindrical casing manufacturing method. The cylindrical housing 1 is a housing for a condenser microphone, such as image 3 with Figure 4 As shown, it consists of a housing body 3 formed by a cylindrical body having a top wall 2 , and an insulating surface film 6 formed on an inner peripheral surface 5 of a peripheral wall 4 of the housing body 3 . In addition, the outer diameter of the cylindrical casing 1 is in the range of 4 to 6φ, and the thickness (length in the axial direction) is 1 mm. In this case, the material of the housing body 3 is, for example, nickel-copper-zinc alloy with a thickness of 0.1 mm, and the main component of the insulating surface film 6 is, for example, epoxy polyester...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relate to a manufacturing method of a case, wherein needless parts are not generated on a surface film part of an insulation surface film. In addition, after punching, the operation of mounting the surface film part of a magnet is not required. Producibility is excellent. The invention relates to a manufacturing method of the cylindrical case by which the cylindrical case 1 is punched by successively sending out a plate-shaped base stock 11 on which guide holes 12 are provided at a prescribed pitch along the longitudinal direction while being guided by these holes 12 with a progressive press device 8. A ring-like film part 13 is formed on the plate-shaped base stock 11 on the basis of the guide holes 12. The cylindrical case 1 on the inner peripheral surface 5 of which the film part 13 is arranged is successively punched by performing the delivering stage of the plate-shaped base stock 11 with the progressive press device 8.

Description

[0001] The present invention is a divisional application of the No. 200510064558.7 invention patent application filed on April 13, 2005 with the title of "tubular shell manufacturing method". technical field [0002] The invention relates to a manufacturing method of a casing. Background technique [0003] In a portable phone, a condenser microphone is used. This condenser microphone has a cylindrical housing. In addition, in recent years, the overall size of the condenser microphone has been reduced (compacted). Specifically, in contrast to the case where an aluminum plate with a thickness of 0.3 mm was used in the past cylindrical housing, a copper-nickel-zinc alloy plate with a thickness of 0.1 mm has been used in recent cylindrical housings to achieve a reduction in the overall size. small. That is, in recent years, nickel-copper-zinc alloy has been used as the material to ensure the strength of the product because the overall size has become smaller. [0004] Howeve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21D51/16B21D22/02B21D43/02
CPCE01D19/125E01D2101/24E01D2101/40
Inventor 大田幸雄
Owner NIDAI SEIKO CORP