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fastening tool

A technology for fastening tools and cylinders, which is applied in the direction of manufacturing tools, nailing tools, etc., and can solve problems such as hindering the downward movement of the piston

Active Publication Date: 2016-02-03
KOKI HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since the return air chamber communicates with the storage chamber during the downward movement of the piston, useless compressed air flows into the return air chamber
In addition, the increase in pressure in the return air chamber hinders the downward movement of the piston and becomes a factor of reduction of the driving force (impact force)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] will refer to Figure 1-3 A first embodiment of the present invention will be described. The nail gun 1 including the fastening tool of the present invention is a tool for driving a nail (not shown) as a fastener, and uses compressed air as its power.

[0062] The nail gun 1 includes a housing 2 , a cylinder 3 accommodated in the housing 2 , a piston 4 accommodated in the cylinder 3 , a head valve 5 accommodated in the housing 2 , and a handpiece 6 extending from the housing 2 . The housing 2 includes a handle 2A on one side of the housing 2 . exist figure 1 In , the direction in which the handle 2A extends from the housing 2 is defined as the rear, and the opposite direction is defined as the front. The direction in which the nosepiece 6 extends from the housing 2 is defined as the bottom, and the opposite direction is defined as the top. In addition, the direction perpendicular to the front-back direction and the bottom-top direction is defined as the left-right ...

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PUM

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Abstract

A fastening tool includes a housing, a trigger, a cylinder, a piston and a main valve. The main valve allows communication between the cylinder and the first chamber in conjunction with operation of the trigger. The housing is formed with a first air chamber, a second air chamber and a third air chamber. The second air chamber communicates with the cylinder in conjunction with movement of the piston. The third air chamber accumulates or exhausts compressed air in the first air chamber in conjunction with operation of the trigger. The cylinder is between a first position where the cylinder upper chamber communicates with the first air chamber, and a second position where the cylinder upper chamber communicates with the first air chamber based on a pressure difference between the second air chamber and the third air chamber. can be moved between.

Description

technical field [0001] The present invention relates to a fastening tool. Background technique [0002] Such as Figure 12 As shown, a conventional nail gun 101 includes a housing 102 , a cylinder 103 , a piston 104 , a driving blade 141 , a head valve 105 and a trigger 112 . A storage chamber 102 a for accumulating compressed air is formed in the housing 102 . A piston 104 is housed in the cylinder 103 and divides the cylinder 103 into a cylinder upper chamber and a cylinder lower chamber. The drive blade 141 is fixed to the piston 104 and is configured to strike a nail (not shown). The head valve 105 is provided above the cylinder 103 . A return air chamber 134 is formed in the housing 102 . The piston 104 returns to top dead center by the compressed air accumulated in the return air chamber 134 . The air cylinder 103 has a check valve 103A and is formed with an air passage 103 a communicating with the return air chamber 134 . The housing 102A has an upper portion fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25C1/04
CPCB25C1/044B25C1/008B25C1/046B25C1/04
Inventor 圷康辅平井升一驹崎义一长尾雅也宫崎秋行
Owner KOKI HLDG CO LTD