Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fastening parts and rod-shaped parts for fastening parts

A technology for fastening parts and rod-shaped parts, which is applied to threaded fasteners, connecting members, screws, etc., can solve problems such as lightweight obstructions, and achieve superior strength and stress corrosion cracking resistance

Active Publication Date: 2019-05-28
NHK SPRING CO LTD +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the length of the shaft portion of the steel bolt affects the wall thickness of the part. On the other hand, the diameter and thickness of the steel bolt affect the width of the flange part of the part where the threaded hole is provided. Therefore, when fastening the joint The use of steel bolts for parts made of aluminum alloy or magnesium alloy hinders the pursuit of weight reduction

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
  • Fastening parts and rod-shaped parts for fastening parts
  • Fastening parts and rod-shaped parts for fastening parts
  • Fastening parts and rod-shaped parts for fastening parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0051] figure 1 It is a side view which shows the structure of the fastening member which concerns on Embodiment 1 of this invention. figure 2 Yes figure 1 The direction of the fastening part shown through its length ( figure 1The cross-sectional view of the central axis of the left-right direction). The fastening member 1 shown in these figures is a bolt (a type of externally threaded member) formed of a cladding material formed by joining two aluminum (Al) alloys different from each other. The fastening part 1 includes: a shaft part 2, which is cylindrical; a head 3, which is arranged in the axial direction of the shaft part 2 ( figure 1 and the neck 4 constituting the boundary between the shaft portion 2 and the head 3. The shaft portion 2 has a threaded portion 22 having a threaded portion 21 formed on its surface. in addition, figure 1 The shown shape of the head 3 (hexagonal shape) is only an example, and other shapes (hexagonal meson shape, cylindrical shape, fla...

Embodiment approach 2

[0064] Figure 5 It is a plan view showing the structure of the fastening member according to Embodiment 2 of the present invention. Image 6 Yes Figure 5 The A-A line sectional view. The fastening member 5 shown in these figures is a nut (a type of internally threaded member) made of a coating material formed by joining two different aluminum alloys together. The fastening member 5 has a hollow cylindrical shape, and a thread 52 is formed on the inner surface of a hole 51 formed in the center. in addition, Figure 5 The shown shape of the fastening part 5 (hex nut) is only an example, and nuts having other shapes (flange nut, cap nut, long nut, etc.) can also be realized.

[0065] The fastening member 5 includes a first alloy portion 5a and a second alloy portion 5b each formed of two different aluminum alloys. The first alloy portion 5 a forms an annular shape on the surface of the thread 52 , which is a portion in contact with a member to be fastened and connected. T...

Embodiment approach 3

[0075] Figure 9 It is a side view which shows the structure of the fastening member which concerns on Embodiment 3 of this invention. Figure 10 Yes Figure 9 The direction of the fastening part shown through its length ( Figure 9 The cross-sectional view of the central axis of the left-right direction). The fastening member 6 shown in these figures is a rivet made of a cladding material formed by joining two kinds of aluminum alloys different from each other. The fastening member 6 includes a cylindrical shaft portion 7, which is arranged in the height direction of the cylinder forming the shaft portion 7 ( Figure 9 The head 8 at one end of the left-right direction) and the neck 9 constituting the boundary between the shaft portion 7 and the head 8 . in addition, Figure 9 The shown shape of the head 8 (round head) is only one example, other shapes are also possible (flat head, etc.).

[0076] The fastening member 6 includes a first alloy portion 6a and a second allo...

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
Vickers hardnessaaaaaaaaaa
Login to View More

Abstract

A fastening member includes a first alloy portion and a second alloy portion. The first alloy portion is made of an aluminum alloy including 0.005 wt% to 5.0 wt% zinc and 0.6 wt% to 2.0 wt% magnesium and is provided to a part that comes into contact with at least one of a plurality of members serving as a fastening target. The second alloy portion is made of an aluminum alloy including more than 2.0 wt% and 5.0 wt% or less magnesium and more than 5.0 wt% and 10 wt% or less zinc and is joined to the first alloy portion.

Description

technical field [0001] The present invention relates to a fastening member for fastening and coupling a plurality of members, and a rod-shaped member for fastening member for manufacturing the fastening member. Background technique [0002] Conventionally, weight reduction of various parts has been pursued as one of measures to reduce fuel consumption of automobiles. For example, an aluminum alloy is used instead of cast iron as a material of an engine block, or a magnesium alloy is used instead of steel as a material of an engine cover or an oil pan. [0003] In the case of using conventional steel bolts to fasten and connect parts formed of the above-mentioned aluminum alloy or magnesium alloy, due to the large difference between the linear expansion coefficient of the aluminum alloy or magnesium alloy and the linear expansion coefficient of steel, it is easy to occur relaxation, and is also prone to corrosion due to the contact of dissimilar metals. Therefore, in order ...

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 Patents(China)
IPC IPC(8): F16B35/00F16B19/06
Inventor 风间俊男铃木健森茂人
Owner NHK SPRING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com