Title:
METHOD FOR MANUFACTURING LEAF SPRINGS
Document Type and Number:
WIPO Patent Application WO/2011/155283
Kind Code:
A1
Abstract:
The disclosed method for manufacturing leaf springs can improve the durability of eyes of said leaf springs, improve productivity, and decrease manufacturing costs. When forming a gap (115), the front edge (113) of an eye section (112) is formed across from an opposing section (114) such that said front edge (113) does not intersect straight lines (L1 and L2) that connect center points (S1 and S2) of rebound-member rebound surfaces to a point (T1) where the aforementioned opposing section (114) intersects a line (H1) that is perpendicular to said opposing section and passes through the leaf(111)-side corner (113A) of the aforementioned front edge (113). During shot peening of the inner surface of the eye section (112), shot rebounding from the aforementioned rebound surfaces flies towards the opposing section (114) at the gap (115), covering the entire surface there. Also, when forming the eye section (112), the disclosed manufacturing method obviates the need for a step to cut the aforementioned front edge.
Inventors:
TANGE, Akira (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
丹下 彰 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
KURIMOTO, Kiyoshi (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
栗本 清 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
GOTO, Yurika (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
後藤 由利香 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
丹下 彰 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
KURIMOTO, Kiyoshi (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
栗本 清 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
GOTO, Yurika (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
後藤 由利香 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
Application Number:
JP2011/060966
Publication Date:
December 15, 2011
Filing Date:
May 12, 2011
Export Citation:
Assignee:
NHK SPRING CO., LTD. (10 Fukuura 3-chome, Kanazawa-ku Yokohama-sh, Kanagawa 04, 〒2360004, JP)
日本発條株式会社 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 Kanagawa, 〒2360004, JP)
TANGE, Akira (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
丹下 彰 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
KURIMOTO, Kiyoshi (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
栗本 清 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
GOTO, Yurika (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
日本発條株式会社 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 Kanagawa, 〒2360004, JP)
TANGE, Akira (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
丹下 彰 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
KURIMOTO, Kiyoshi (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
栗本 清 (〒04 神奈川県横浜市金沢区福浦３丁目１０番地 日本発條株式会社内 Kanagawa, 〒2360004, JP)
GOTO, Yurika (10, Fukuura 3-chome, Kanazawa-ku, Yokohama-sh, Kanagawa 04, 〒2360004, JP)
International Classes:
F16F1/02; B24C1/04; B24C1/10; F16F1/28
Attorney, Agent or Firm:
SUENARI, Mikio (Asaco Kyobashi Building 3rd floor, 6-13 Kyobashi 1-chome, Chuo-k, Tokyo 31, 〒1040031, JP)
Claims:
Previous Patent: FRESH WATER-GENERATING DEVICE AND FRESH WATER-GENERATING METHOD
Next Patent: ABSORBENT ARTICLE
Next Patent: ABSORBENT ARTICLE