CN2284879Y - 防松止退螺钉 - Google Patents

防松止退螺钉 Download PDF

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Publication number
CN2284879Y
CN2284879Y CN 96205757 CN96205757U CN2284879Y CN 2284879 Y CN2284879 Y CN 2284879Y CN 96205757 CN96205757 CN 96205757 CN 96205757 U CN96205757 U CN 96205757U CN 2284879 Y CN2284879 Y CN 2284879Y
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China
Prior art keywords
screw
model
utility
bolt head
sawtooth
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Expired - Fee Related
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CN 96205757
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English (en)
Inventor
黄墩清
蒋先华
蔡才德
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SUBOER CO Ltd ZHEJIANG
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SUBOER CO Ltd ZHEJIANG
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Priority to CN 96205757 priority Critical patent/CN2284879Y/zh
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Publication of CN2284879Y publication Critical patent/CN2284879Y/zh
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Abstract

本实用新型涉及一种固定连接非金属材料制成的物体的防松止退螺钉,由丝杆和螺栓头构成整体,其在螺柱头的支承面上增加均匀分布着锯齿,并设定在一定的锯齿角度,使螺钉的支承面与底硬度连结体表面贴紧后,不产生松动;它具有结构简单,成本低,使用方便等优点,特别适用于低硬度材料制成的小件物体之间的连接。

Description

防松止退螺钉
本实用新型涉及一种固定物体的元件,特别是用于防止固定连接底硬度材料制成的物体松动的止退螺钉。
现有的螺钉(包括螺栓)在使用过程中,由于振动或冷热收缩等原因,往往会产生松动,甚至脱落的现象;为此,人们在用螺钉固定物体时,增加一个锯齿垫圈,这样,尽管垫片不会与被连结体分离,但螺钉与垫圈之间由于没有啮合作用,仍然会有松动;而且这种螺钉在生产、使用时,费料、费时。
本实用新型之目的在于提供一种既结构简单,使用方便,又能防止被连结物松动的止退螺钉。
防松止退螺钉是在普通螺钉的支承面上增加锯齿,并设定一定的锯齿角度,使螺钉的支承面与连结体表面贴紧后,底硬度连结体表面产生齿纹,并与螺钉支承面齿合,从而保证螺钉不能逆转而产生松动。
本实用新型具有结构简单,成本底,使用方便等优点,特别适用于由底硬度材料制成的小件物体之间的连接。
下面结合附图所示的实施例对本实用新型作进一步的描述。
图1是本实用新型的结构示意图。
图2是螺柱头支承面的示意图。
图3是本实用新型锯齿结构放大图。
防松止退螺钉由丝杆4和螺柱头2构成整体,螺柱头2的支承面上均匀分布着24个大小、形状相等的锯齿3,锯齿3的个数视整个螺钉的大小而定,可以是12个,或20个;锯齿3的齿夹边与水平之间的夹角α、β分别为:α=45°-135°,β∠45°,且两夹角之和满足:α+β=45°-175°,图中所示的夹角:α=75°,β=20°。螺柱头2的顶面上开有长槽1或“+”字槽,作启子扭旋螺钉之用。

Claims (2)

1、一种防松止退螺钉,它由丝杆(4)和螺栓头(2)构成整体,其特证在于螺柱头(2)的支承面上均匀分布着锯齿(3)。
2、根据权利要求1所述的防松止退螺钉,其特征在于:所述的锯齿(3)的齿夹边与水平之间的夹角α、β满足以下条件:
α=45°-135°
β∠45°
α+β=45°-175°
CN 96205757 1996-03-27 1996-03-27 防松止退螺钉 Expired - Fee Related CN2284879Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 96205757 CN2284879Y (zh) 1996-03-27 1996-03-27 防松止退螺钉

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 96205757 CN2284879Y (zh) 1996-03-27 1996-03-27 防松止退螺钉

Publications (1)

Publication Number Publication Date
CN2284879Y true CN2284879Y (zh) 1998-06-24

Family

ID=33890626

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 96205757 Expired - Fee Related CN2284879Y (zh) 1996-03-27 1996-03-27 防松止退螺钉

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CN (1) CN2284879Y (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102410297A (zh) * 2010-09-21 2012-04-11 瑞士商柏泰有限公司 高强度免垫圈埋头螺丝的防松结构及其加工方法
CN102734493A (zh) * 2011-04-02 2012-10-17 浙江三花制冷集团有限公司 四通换向阀及其活塞部件

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102410297A (zh) * 2010-09-21 2012-04-11 瑞士商柏泰有限公司 高强度免垫圈埋头螺丝的防松结构及其加工方法
CN102734493A (zh) * 2011-04-02 2012-10-17 浙江三花制冷集团有限公司 四通换向阀及其活塞部件

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