Blind Rivet Fastening Device

Abstract

To provide a blind rivet fastening device that makes it easy to mount a blind rivet in the nose and that keeps the mounted blind rivet from falling out of the nose.When the nose is connected slidably to the tool housing in the axial direction, the nose resists the action of the elastic pushing means and is slid so as to be pulled rearward in the axial direction, and the jaw is pulled rearward in the axial direction in the jaw guide. When this has occurred, the inner diameter of the jaw is increased, the mandrel is easily inserted into the jaw, the force pulling the nose rearward in the axial direction is released, the jaw is returned forward axially in the jaw guide by the pushing force of the elastic pushing means, and the inner peripheral surface of the jaw is frictionally engaged with the mandrel.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority from Japanese Patent Application No. 2009 111053, filed on Apr. 30, 2009, the disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a blind rivet fastening device and, more specifically, to a blind rivet fastening device that makes it easy to mount a blind rivet in the nose and that keeps the mounted blind rivet from falling out of the nose.[0003]A blind rivet consists of a hollow rivet main body and a mandrel inserted into the rivet main body. The rivet main body consists of a hollow sleeve and a flange at one end of the sleeve. The mandrel passed through the sleeve is forcibly pulled until it becomes ruptured on the flange side. This distorts a portion of the sleeve so that it expands. The expanded sleeve portion and the flange secure the fastened components on both sides and fasten the rivet main body to the fastened components. A blind...

AI Technical Summary

Benefits of technology

[0012]The object of the present invention is to provide a blind rivet fastening device that makes it easy to mount a blind rivet in the nose and that keeps the mounted blind rivet from falling out of the nose.

[0014]The nose is connected slidably to the tool housing in the axial direction, the nose resists the action of the elastic pushing means and is slid so as to be pulled rearward in the axial direction, and the jaw is pulled rearward in the axial direction in the jaw guide, increasing the inner diameter of the jaw, allowing the mandrel to be easily inserted into the jaw, releasing the force pulling the nose rearward in the axial direction, returning the jaw forward axially in the jaw guide by means of the pushing force of the elastic pushing means, and frictionally engaging the inner peripheral surface of the jaw with the mandrel inserted in the jaw.

[0015]These characteristics make it easy to mount a blind rivet in the nose and keep the mounted blind rivet from falling out of the nose.

[0016]In this blind rivet fastening device, the trigger lever is connected rotatably to the handle by a pin, the trigger lever comprises an operating portion extending lengthwise from the pin to one side of the handle and a mounted portion extending lengthwise from the pin to the other side of the handle, the operating portion is the trigger lever portion rotating the pin and activating the drive means with a pulling action, and the mounted portion is the trigger lever portion slid by the pulling action of the mounted portion so as to pull the nose rearward in the axial direction. The pulling action of the mounted portion of the trigger lever mounts the blind rivet and keeps it from falling out.

Problems solved by technology

Thus, the blind rivet fastening device in Patent Document 1 is not configured in a way that makes it easy to mount a blind rivet in the nose and that keeps the mounted blind rivet from falling out.

As a result, the mounting process is not easy.

However, the blind rivet fastening device in Patent Document 3 is not configured in a way that makes it easy to mount a blind rivet in the nose and that keeps the mounted blind rivet from falling out.

However, the blind rivet fastening device in Patent Document 4 is not configured in a way that makes it easy to mount a blind rivet in the nose and that keeps the mounted blind rivet from falling out.

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