CN2169194Y - 声辨拉线开关 - Google Patents

声辨拉线开关 Download PDF

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Publication number
CN2169194Y
CN2169194Y CN 93212039 CN93212039U CN2169194Y CN 2169194 Y CN2169194 Y CN 2169194Y CN 93212039 CN93212039 CN 93212039 CN 93212039 U CN93212039 U CN 93212039U CN 2169194 Y CN2169194 Y CN 2169194Y
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ratchet
slot
copper sheet
pull switch
sound
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杨朝英
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Abstract

本实用新型声辨拉线开关,它是将现有拉线开关 的棘轮齿槽截面由单一的L形改为L形和双弧形间 隔设置,将触点铜片固定在L形齿槽的下槽边上。 开灯时簧片端部从L形齿槽顶部落下与触点铜片搭 接并发出“咔哒”声响;关灯时簧片沿双弧形齿槽的弧 形齿面滑动,不产生声音。本实用新型具有结构简 单、成本低、使用寿命长、节电效果明显等优点。

Description

本实用新型声辨拉线开关,它涉及一种按接触面形状区分的触点电开关。
目前市场销售和家庭使用的一般拉线开关,其棘轮周圈的齿槽截面都是L形,当拽动拉线,棘轮随拉线板转动时,簧片从齿顶落入齿槽,无论开灯或关灯,都会产生同样的“咔哒”响声。由于开关声音相同,在停电情况下,人们无法分辨电灯是开还是关。我国大部分地区供电没有保障,尤其是农村,经常因为停电过程中无法分辨电灯开关状态而造成电力的浪费。
为避免上述现有技术存在的缺点,本实用新型提供一种用声音区别电灯开关状态的声辨拉线开关。
本实用新型的目的是这样实现的:由棘轮、轮轴、簧片、触点铜片、拉线板、弹簧和外壳组成的声辨拉线开关,本实用新型是将现有棘轮的齿槽截面由单一的L形改为L形和双弧形间隔设置,触点铜片固定在各L形齿槽的下槽边,簧片一端与外壳固定连接,另一端与棘轮搭接。
附图说明如下:
图1为声辨拉线开关的棘轮截面示意图
图2为声辨拉线开关开灯状态示意图
图3为声辨拉线开关闭灯状态示意图
下面结合附图对本实用新型做进一步详述:现有拉线开关由棘轮、轮轴、簧片、触点铜片、拉线板、弹簧和外壳组成。本实用新型是将棘轮的齿槽截面由单一的L形改为L形和双弧形间隔设置,触点铜片(2)固定在L形齿槽的下槽边,簧片(3)的一端与外壳固定连接,另一端与棘轮(1)搭接(参见图1)。开灯时(参见图2),棘轮(1)顺时针方向转动,簧片(3)从L形齿槽顶端落下并与触点铜片(2)搭接,同时发出“咔哒”声响。关灯时(参见图3),棘轮(1)仍顺时针方向转动,簧片(3)离开触点铜片(2)进入双弧形齿槽,此时簧片(3)端部是沿第一个弧面滑动,同时逐渐与第二个弧面接触,而不会产生声音。
本实用新型与现有技术相比具有以下优点:结构简单、成本低、使用寿命长,节电效果明显。

Claims (2)

1、一种声辨拉线开关,它由棘轮、轮轴、簧片、触点铜片、拉线板、弹簧和外壳等组成,其特征在于棘轮(1)周圈的齿槽截面由L形和双弧形间隔设置。
2、根据权利要求1所述的声辨拉线开关,其特征在于触点铜片(2)固定在L形齿槽的下槽边,簧片(3)的一端与外壳固定连接,另一端与棘轮(1)搭接。
CN 93212039 1993-05-11 1993-05-11 声辨拉线开关 Expired - Fee Related CN2169194Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93212039 CN2169194Y (zh) 1993-05-11 1993-05-11 声辨拉线开关

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 93212039 CN2169194Y (zh) 1993-05-11 1993-05-11 声辨拉线开关

Publications (1)

Publication Number Publication Date
CN2169194Y true CN2169194Y (zh) 1994-06-15

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Family Applications (1)

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CN 93212039 Expired - Fee Related CN2169194Y (zh) 1993-05-11 1993-05-11 声辨拉线开关

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CN (1) CN2169194Y (zh)

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