CN2215620Y - 膨胀螺丝 - Google Patents

膨胀螺丝 Download PDF

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Publication number
CN2215620Y
CN2215620Y CN 95206714 CN95206714U CN2215620Y CN 2215620 Y CN2215620 Y CN 2215620Y CN 95206714 CN95206714 CN 95206714 CN 95206714 U CN95206714 U CN 95206714U CN 2215620 Y CN2215620 Y CN 2215620Y
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China
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tapered cup
expansion sleeve
cup nut
utility
model
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Expired - Fee Related
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CN 95206714
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English (en)
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蒋开源
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Individual
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Individual
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Priority to CN 95206714 priority Critical patent/CN2215620Y/zh
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Abstract

一种膨胀螺丝由螺栓、止回垫圈、垫圈、膨胀套 管、锥形螺母组成,其特点是膨胀套管的一端设有起 紧固作用的耳片,锥形螺母内设有一段引孔,其侧面 设有滚纹。本实用新型具有安装方便、可靠、节省材 料、美观大方等优点。

Description

本实用新型涉及一种膨胀螺丝。
目前通用的膨胀螺丝由螺母、垫圈、拉杆、膨胀套管等组成,其工作原理是螺母拉动拉杆使膨胀套管沿拉杆膨胀,使得整个膨胀螺丝紧固,可承受很大的拉力。这种膨胀螺丝的不足之处是:1、拉杆出头越紧越突出,不美观且很费材料;2、如夹件过厚,拉杆较短时,螺丝便无法工作;3、安装物不用时,膨胀螺丝很难拿出,同样造成浪费。
本实用新型的目的就是提供一种安装方便、可靠、材料节省、美观大方的膨胀螺丝。
本实用新型目的由以下技术解决方案来实施:该膨胀螺丝由螺栓、止回垫圈、垫圈、膨胀套管、锥形螺母组成,用螺栓取代原有的拉杆。膨胀套管的一端设有起紧固作用的耳片,锥形螺母的一端设置一段引孔,锥形螺母的侧面设置起防滑作用的滚纹。工作时,膨胀套管套在螺栓上,螺栓的一端经锥形螺母的引孔与锥形螺母螺纹连接。
本实用新型的膨胀螺丝安装方便、可靠、美观大方,膨胀套管的耳片紧固加上锥形螺母侧面滚纹的防滑作用,使得工作时,锥形螺母不会打滑或锥形螺母脱离膨胀套管落入安装孔中,另外,根据安装需要可随意更换螺栓,安装物不用时,整个膨胀螺丝很容易拿出,从而节省材料。
下面结合附图对本实用新型作详细说明。
图1为本实用新型结构示意图;
图2为锥形螺母结构示意图。
膨胀螺丝由螺栓1、止回垫圈2、垫圈3、膨胀套管4、锥形螺母6组成。膨胀套管4的一端设有耳片5,耳片5起紧固作用,锥形螺母6的一端设置一段引孔8,锥形螺母6的侧面设有起防滑作用的滚纹7。
工作时,止回垫圈2、垫圈3、膨胀套管4依次套在螺栓1上,螺栓1的一端经锥形螺母6的引孔8与锥形螺母6螺纹连接,当整个膨胀螺丝放入安装孔时,膨胀套管4通过耳片5夹紧锥形螺母6侧面,由于锥形螺母6侧面有滚纹7,其间的摩擦力加大,使得锥形螺母6不致于随螺栓1一起转动,膨胀套管4在螺栓1及锥形螺母6的作用下膨胀。

Claims (1)

1、一种由螺栓(1)、止回垫圈(2)、垫圈(3)、膨胀套管(4)、锥形螺母(6)组成的膨胀螺丝,其特征在于:膨胀套管(4)的一端设有耳片(5),锥形螺母(6)的一端设置一段引孔(8),锥形螺母(6)的侧面设有滚纹(7)。
CN 95206714 1995-03-24 1995-03-24 膨胀螺丝 Expired - Fee Related CN2215620Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95206714 CN2215620Y (zh) 1995-03-24 1995-03-24 膨胀螺丝

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95206714 CN2215620Y (zh) 1995-03-24 1995-03-24 膨胀螺丝

Publications (1)

Publication Number Publication Date
CN2215620Y true CN2215620Y (zh) 1995-12-20

Family

ID=33858553

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 95206714 Expired - Fee Related CN2215620Y (zh) 1995-03-24 1995-03-24 膨胀螺丝

Country Status (1)

Country Link
CN (1) CN2215620Y (zh)

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