CN201531499U - 防盗膨胀螺丝 - Google Patents

防盗膨胀螺丝 Download PDF

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Publication number
CN201531499U
CN201531499U CN2009202005004U CN200920200500U CN201531499U CN 201531499 U CN201531499 U CN 201531499U CN 2009202005004 U CN2009202005004 U CN 2009202005004U CN 200920200500 U CN200920200500 U CN 200920200500U CN 201531499 U CN201531499 U CN 201531499U
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徐菁
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Abstract

本实用新型是一种防盗膨胀螺丝,包括螺丝、膨胀管、锥形扩张头,螺丝头为六角棱柱形,其特征是在螺丝头下面车制有一帽头,为圆锥形或半圆球形,帽头和螺丝头之间车制成细腰,该细腰在膨胀螺丝锁紧后继续用力即可拧断。由于拧断后螺丝头脱落,膨胀螺丝外露的部分只剩下帽头,帽头为圆锥形或半圆球形,无法用工具转动,膨胀螺丝无法拆卸,达到防盗的目的。由于不需要焊接,施工简便。

Description

防盗膨胀螺丝
技术领域
本实用新型涉及紧固件,特别是对膨胀螺丝的改进。
背景技术
现有的铁膨胀螺丝,特别是倒抽螺丝,是由螺丝、膨胀管,以及相当于螺帽的锥形扩张头组成,锁紧螺丝时,锥形扩张头将膨胀管张开,挤压在孔中形成固定。在防盗门窗上使用时,为了防止小偷拆卸,现在一般采用将螺丝头焊死的办法,不但增加了施工工序,而且带来很多麻烦。
实用新型内容
本实用新型目的在于提供一种螺丝紧固后无需焊接就不可拆卸的膨胀螺丝,以实现防盗目的。
本实用新型的方案是:防盗膨胀螺丝,包括螺丝、膨胀管、锥形扩张头,螺丝头为六角棱柱形,其特征是:螺丝头下面车制有一帽头,为圆锥形或半圆球形,帽头和螺丝头之间车制成细腰,该细腰在膨胀螺丝锁紧后拧断。
本实用新型的优点是:帽头和螺丝头之间的细腰在膨胀螺丝锁紧后,继续加力即可拧断,螺丝头脱落,膨胀螺丝外露的部分只剩下帽头,由于帽头为圆锥形或半圆球形,无法用工具转动,膨胀螺丝无法拆卸,达到防盗的目的。由于不需要焊接,施工简便。
附图说明
下面根据附图结合实施例对本实用新型作进一步说明。
附图是本实用新型的结构示意图。
图中1螺丝头,2细腰,3帽头,4膨胀管,5锥形扩张头。
具体实施方式
参见附图,实施例的防盗膨胀螺丝,包括螺丝、膨胀管4、锥形扩张头5,螺丝头1为传统的六角棱柱形。
螺丝头1下面用车床加工成一帽头3,帽头3为圆锥形,具体实施时也可以为半圆球形,主要是无法夹住,以防止扳手、钳子等工具转动螺丝。
帽头3和螺丝头1之间车制成细腰2,该细腰2的粗细选择,是以在膨胀螺丝锁紧后,继续用力即可拧断为标准。
使用时,在膨胀螺丝锁紧后,继续加力即可将上述的细腰2拧断,螺丝头1脱落,膨胀螺丝外露的部分只剩下帽头3,由于帽头3无法用工具转动,膨胀螺丝无法拆卸,达到防盗的目的。

Claims (1)

1.防盗膨胀螺丝,包括螺丝、膨胀管(4)、锥形扩张头(5),螺丝头(1)为六角棱柱形,其特征是:螺丝头(1)下面车制有一帽头(3),为圆锥形或半圆球形,帽头(3)和螺丝头(1)之间车制成细腰(2),该细腰(2)在膨胀螺丝锁紧后拧断。
CN2009202005004U 2009-11-23 2009-11-23 防盗膨胀螺丝 Expired - Fee Related CN201531499U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202005004U CN201531499U (zh) 2009-11-23 2009-11-23 防盗膨胀螺丝

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202005004U CN201531499U (zh) 2009-11-23 2009-11-23 防盗膨胀螺丝

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CN201531499U true CN201531499U (zh) 2010-07-21

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CN2009202005004U Expired - Fee Related CN201531499U (zh) 2009-11-23 2009-11-23 防盗膨胀螺丝

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CN (1) CN201531499U (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014146897A1 (en) * 2013-03-18 2014-09-25 Xena Ip Holdings Limited Security anchor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014146897A1 (en) * 2013-03-18 2014-09-25 Xena Ip Holdings Limited Security anchor

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Granted publication date: 20100721

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