Wrench socket for automatically marking high tension bolt, and method for tightening high tension bolt using same

Patent metadata

Field	Value
Publication number	US-9393679-B2
Application number	US-201214236594-A
Country	US
Kind code	B2
Filing date	Aug 2, 2012
Priority date	Aug 2, 2011
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

There are provided a wrench socket and a method for tightening a high tension bolt. The wrench socket includes: a first housing making partial contact with a nut; a second housing connected to the first housing and coupled to a handle; a marker disposed in the first and second housings for marking a high tension bolt, the nut, and a washer according to a height of the high tension bolt; a gauge disposed in the first and second housings for making contact with the high tension bolt and reciprocating according to a position of the high tension bolt; and an elastic part configured to apply an elastic force to the gauge according to a position of the gauge unit.

First claim

The invention claimed is:

1. A wrench socket comprising:
a first housing making partial contact with a nut;
a second housing connected to the first housing and coupled to a handle to apply force to the nut;
a marker disposed in the first and second housings for marking a high tension bolt, the nut, and a washer according to a height of the high tension bolt;
a gauge disposed in the first and second housings for making contact with the high tension bolt and reciprocating according to a position of the high tension bolt;
an elastic part configured to apply elastic force to the gauge according to a position of the gauge; and
a position detector disposed in the second housing to detect the position of the gauge,
wherein if the position of the gauge is detected by the position detector as being varied by a first length, the marker marks the high tension bolt, the nut, and the washer.

2. The wrench socket of claim 1 , wherein the marker comprises:
an ink storage disposed in the second housing for storing ink and supplying the ink according to the position of the gauge detected by the position detector; and
an ink rod through which the ink stored in the ink storage is allow to flow and is dispensed onto the high tension bolt, the nut, and the washer for marking thereof.

3. The wrench socket of claim 1 , further comprising an indicator disposed on the second housing to indicate a clamping force of the high tension bolt by using an image or sound according to the position of the gauge detected by the position detector.

4. The wrench socket of claim 3 , wherein if the position of the gauge is detected by the position detector as being equal to or greater than a second length, the indicator indicates that the high tension bolt is completely tightened.

5. The wrench socket of claim 1 , further comprising a magnetic part disposed on the first housing for attachment to the washer by magnetic force.

6. The wrench socket of claim 1 , wherein the wrench socket automatically marks a high tension bolt and further comprises an outer case disposed around an outside the first housing and fixed to the handle second housing.

7. The wrench socket of claim 1 , wherein the wrench socket automatically marks a high tension bolt and further comprises an input unit disposed on the first housing or the second housing for inputting a type of the high tension bolt therethrough.

8. A method for tightening a high tension bolt, the method comprising:
primarily tightening a nut on the high tension bolt by placing a first housing around the nut placed around the high tension bolt, rotating the nut by a first angle, and determining whether a position of a gauge making contact with the high tension bolt is varied by a first length;
if the position of the gauge is detected by a position detector as being varied by the first length, marking the high tension bolt, the nut, and a washer by using a marker; and
performing a mainly tightening procedure, in which the nut is rotated by a second angle using the first housing and if the position of the gauge is detected by the position detector as being varied by a second length, an indicator indicates that the high tension bolt is completely tightened.

9. The method of claim 8 , wherein prior to the primarily tightening of the nut on the high tension bolt, the method further comprises inputting a type of the high tension bolt through an input unit.

Assignees

• Kim Kang Seok
• Lee Yong Seung
• Nah Hwan Seon
• Lee Hyeon Ju
• Korea Electric Power Corp

Inventors

• Kim Kang Seok
• Lee Yong Seung
• Nah Hwan Seon
• Lee Hyeon Ju

Classifications

• B25B23/14 Primary

  Arrangement of torque limiters or torque indicators in wrenches or screwdrivers (couplings for transmitting rotation or clutches F16D; devices for measuring torque per se G01L) · CPC title

• B25B13/48

  for special purposes · CPC title

• B25B13/06

  of socket type · CPC title

• B25B23/15 Primary

  having a mechanism to mark the work when the selected torque is applied to the work · CPC title

• B25B23/1425

  by electrical means · CPC title