CN201078380Y - 锁定螺栓 - Google Patents

锁定螺栓 Download PDF

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Publication number
CN201078380Y
CN201078380Y CNU2007200241022U CN200720024102U CN201078380Y CN 201078380 Y CN201078380 Y CN 201078380Y CN U2007200241022 U CNU2007200241022 U CN U2007200241022U CN 200720024102 U CN200720024102 U CN 200720024102U CN 201078380 Y CN201078380 Y CN 201078380Y
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China
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screw
screwdriver
head
flat
cambered surfaces
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Expired - Fee Related
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CNU2007200241022U
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English (en)
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秦永武
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Abstract

本实用新型涉及一种只能旋进不能旋出的锁定螺栓,它在螺杆(1)上设有螺钉头(2),螺钉头(2)上有用于插入一字型改锥的一字槽(3),在一字槽改锥按旋出螺钉方向旋转时,所述的一字槽(3)两侧的受力部位各为一个斜面或者弧面(4)、(5),该斜面或者弧面(4)、(5)使得改锥旋出螺钉的力矩缺少作用点,并使改锥沿斜面或者弧面(4)、(5)退出一字槽(3),当改锥旋进螺钉,由于上述两个斜面或者弧面(4)、(5)部位不受力,所以不影响螺钉的旋进,该防盗螺钉采用半球形螺钉头(2),使得用钳子之类的工具也难以旋出该螺钉,本实用新型的生产成本与普通螺钉相当,并且无需专用工具,只用普通改锥即可紧固,使用方便。

Description

锁定螺栓
所属技术领域
本实用新型属于一种螺钉,特别涉及一种只能旋进而不能旋出,因而可用于防盗的锁定螺栓。
背景技术
螺钉是最常用的机械紧固件,在需要防止被固定物体(如汽车牌照等)被盗丢失的场合,普通螺钉不能满足要求,为此人们实用新型了多种防盗螺钉,但都存在结构比较复杂,因而成本偏高的问题,有些防盗螺钉还需要使用特殊工具,使用不便。
发明内容
本实用新型的目的是提供一种结构简单、防盗效果好,成本低,使用方便的锁定螺栓。
本实用新型的目的是这样实现的:锁定螺栓在螺杆上设有螺钉头,螺钉头上有用于插入一字型改锥的一字槽,其特征是,在一字型改锥按旋出方向旋转时,所述一字槽两侧的受力部位各为一个斜面或者弧面使得改锥旋出螺钉的力矩缺少作用点,并使改锥沿该斜面或弧面退出一字槽。
本实用新型和以往的防盗螺钉相比有如下优点,在普通螺钉的基础上,仅对一字槽部位作出改进,就可以有效地达到防盗目的,而不需要增加其他任何零部件,因而本实用新型的生产成本低,并且在正常安装使用时,无需专用工具,只用普通改锥,按普通螺钉的方式即可紧固,所以使用方便。
附图说明
图1为本实用新型的主视图;
图2为图1的俯视图;
图3为图2沿A-A剖面的右视图。
具体实施方式
图1~3所示的锁定螺栓为顺时针方向旋进,在螺杆(1)的上方设有半球形螺钉头(2)、在半球形螺钉头(2)上有用于插入一字型改锥的一字槽(3),其特征是:如图2所示,一字槽(3)左侧的上半部、右侧的下半部两个受力部位各为一个斜面或弧面(4)、(5),在一字型改锥按逆时针方向旋转时,该斜面或者弧面(4)、(5)使得改锥旋出螺钉的力矩缺少作用点,并使改锥沿该斜面或者弧面(4)、(5)退出一字槽(3),当改锥按顺时针方向旋转时,由于上述两个斜面或者弧面(4)、(5)不受力,所以不影响螺钉的旋进。该锁定螺栓采用半球形螺钉头(2),使得用钳子之类的工具也难以旋出该螺钉。

Claims (2)

1.一种锁定螺栓,在螺杆(1)上设有螺钉头(2),在螺钉头(2)上有用于插入一字型改锥的一字槽(3),其特征在于:所述一字槽(3)两侧的受力部位各为一个斜面或者弧面(4)、(5)。
2.根据权利要求1所述的锁定螺栓,其特征在于:所述螺钉头(2)为半球形。
CNU2007200241022U 2007-06-18 2007-06-18 锁定螺栓 Expired - Fee Related CN201078380Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200241022U CN201078380Y (zh) 2007-06-18 2007-06-18 锁定螺栓

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007200241022U CN201078380Y (zh) 2007-06-18 2007-06-18 锁定螺栓

Publications (1)

Publication Number Publication Date
CN201078380Y true CN201078380Y (zh) 2008-06-25

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Family Applications (1)

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CNU2007200241022U Expired - Fee Related CN201078380Y (zh) 2007-06-18 2007-06-18 锁定螺栓

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CN (1) CN201078380Y (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104948558A (zh) * 2015-07-10 2015-09-30 梁跃安 暗装开关插座用一字槽可分钉头螺钉

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104948558A (zh) * 2015-07-10 2015-09-30 梁跃安 暗装开关插座用一字槽可分钉头螺钉

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Granted publication date: 20080625