CN2091747U - 高扭力细齿套筒棘轮扳手 - Google Patents

高扭力细齿套筒棘轮扳手 Download PDF

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CN2091747U
CN2091747U CN 91205442 CN91205442U CN2091747U CN 2091747 U CN2091747 U CN 2091747U CN 91205442 CN91205442 CN 91205442 CN 91205442 U CN91205442 U CN 91205442U CN 2091747 U CN2091747 U CN 2091747U
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tooth
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shifting block
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陈国雄
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Abstract

一种套筒棘轮扳手,包括手柄、齿轮、拨块,齿轮 嵌入手柄端部的圆孔中,手柄圆孔的一侧有一圆弧形 的凹槽,里面嵌入两块三角形的齿片,两齿片之间由 一弹簧撑开,齿片的齿与齿轮的齿相啮合,齿片的背 部与凹槽的壁相贴合,拨块挡住其中一块齿片,使它 与齿轮脱离,依靠齿片与齿轮的齿传递扭力,由于啮 合的齿数多,并且齿片受的力主要为压力,因而不易 损坏,扭力高,且容易做成细齿距,能在小空间内操 作。

Description

本实用新型涉及一种套筒棘轮扳手的结构。
套筒棘轮扳手是与套筒相互配合使用的手工工具,用来拧紧和旋松螺丝或螺帽。扳手的扭力高,寿命就长。棘轮的齿小、最小旋转角就小,就能在小的空间内操作。但齿小强度就小,易破裂,寿命就要受影响,扭力也就低。
本实用新型的目的是提出一种细齿而扭力高的套筒棘轮扳手。
这种套筒棘轮扳手包括手柄、齿轮、拨块和两块三角形齿片,齿轮嵌入手柄端部的圆孔中,拨块装于手柄上圆孔的底板上,手柄圆孔的一侧有一圆弧形的凹槽,里面嵌入两块三角形的齿片,两齿片之间由一弹簧撑开,齿片的齿与齿轮的齿相啮合,齿片的背部与凹槽的壁相贴合,拨块挡住其中一块齿片,使它与齿轮脱离。
附图1是这种套筒棘轮扳手的结构图;
附图2是套筒棘轮扳手的剖视图;
附图3是齿轮;
附图4是三角形的齿片;
附图5是拨块的工作原理图;
如图1和2所示,这种套筒棘轮扳手的手柄(1)的端部的圆孔中嵌有齿轮(5),由上盖板(7)和固定弹簧(6)压住,齿轮(5)能在手柄的圆孔中转动,手柄圆孔的一侧有一圆弧形凹槽(2),里面嵌入两块三角形的齿片(4)、(8),这两齿片的齿与齿轮的齿相啮合,齿片的齿面的圆弧与齿轮齿面的圆弧相一致,两齿片之间由弹簧(3)撑开,齿片背部的圆弧面与凹槽(2)的壁相吻合,因而能紧密地贴合在一起,拨块(9)装于手柄圆孔的底板(10)上,拨块将两齿片中的一块挡住,图1中将齿片(8)挡住,使它与齿轮脱离。此时齿片(4)与齿轮(5)啮合,当手柄以图中顺时针方向扳动时,齿片(4)就带动齿轮作顺时针转动,齿轮带动安装在齿轮方头上的套筒将螺丝拧动。如果将手柄作逆时针方向扳动,齿片(4)将弹簧(3)压缩,齿片(4)与齿轮(5)脱离,作相对滑动,滑过几个齿后,若将手柄作顺时针转动,又能将齿轮转动,带动套筒将螺丝拧动。
这种套筒棘轮扳手工作时,由于齿片的齿全部与齿轮的齿相啮合,因而能传递高的扭力,不易损坏,齿片的背部又与凹槽(2)的壁紧密地贴合,齿片所受的力主要为压力,因而不易破裂,这样,齿轮和齿片可以做成细齿距的,例如齿轮的齿数可以超过55齿,最小的转动角度可以达到7°以内。
图5是从手柄圆孔底板方向剖切的剖视图。如图5所示,当拨动拨块柄(11)将拨块转向另一方向,将齿片(4)挡住,使它与齿轮脱离,此时齿片(8)与齿轮相啮合,就能作另一方向拧动操作。从图5中的实线和虚线可以看出拨块(9)的两种工作位置。

Claims (1)

  1. 一种套筒棘轮扳手,包括手柄(1)、齿轮(5)和拨块(9),齿轮嵌入手柄端部的圆孔中,拨块装于手柄圆孔的底板(10)上,其特征在于手柄圆孔的一侧有一圆弧形的凹槽(2),里面嵌入两块三角形的齿片(4)、(8),两齿片之间由一弹簧(3)撑开,齿片的齿与齿轮的齿相啮合,齿片的背部与凹槽(2)的壁相贴合,拨块(9)挡住其中一块齿片,使它与齿轮脱离。
CN 91205442 1991-04-05 1991-04-05 高扭力细齿套筒棘轮扳手 Withdrawn CN2091747U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 91205442 CN2091747U (zh) 1991-04-05 1991-04-05 高扭力细齿套筒棘轮扳手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 91205442 CN2091747U (zh) 1991-04-05 1991-04-05 高扭力细齿套筒棘轮扳手

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CN2091747U true CN2091747U (zh) 1992-01-01

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CN 91205442 Withdrawn CN2091747U (zh) 1991-04-05 1991-04-05 高扭力细齿套筒棘轮扳手

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102264628A (zh) * 2008-11-20 2011-11-30 汪尚安 用于绞车的轴

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102264628A (zh) * 2008-11-20 2011-11-30 汪尚安 用于绞车的轴

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