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Fuel-driven installing tool

A technology for installing tools and burning power, which is applied in the direction of striking tools, nailing tools, manufacturing tools, etc. It can solve the problems of fuel loss and the inability to adjust the pressure of the dosing chamber, etc., and achieve the effects of simplified structure, favorable low temperature performance, and rapid vaporization rate

Inactive Publication Date: 2004-07-07
HILTI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage here is that fuel losses can also occur through communication with ambient air
In addition, the pressure in the dosing chamber cannot be adjusted

Method used

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  • Fuel-driven installing tool
  • Fuel-driven installing tool
  • Fuel-driven installing tool

Examples

Experimental program
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Embodiment Construction

[0026] In FIG. 1 the mounting tool 10 according to the invention is shown in its original or rest position in a first embodiment. The installation tool 10 is powered by gas in this embodiment. The setting tool 10 has a housing 14 in which a setting device is arranged, by means of which a not shown fastening element can be driven into a not shown substrate when the setting tool 10 is pressed against the substrate and actuated.

[0027] Wherein the installation device comprises a combustion space or combustion chamber 13, a piston guide 17, wherein a pusher piston 16 is installed movably, and a guide post 18, wherein a fixed element can be guided, and the fixed element is guided by the pusher piston 16 therein. The end on the side of the installation direction that moves forward is pushed and can be driven into the substrate. The fastening elements can be stored, for example, in a magazine 19 on the tool.

[0028] In this embodiment, an ignition device such as a spark plug 23 ...

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PUM

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Abstract

A combustion-engined setting tool for driving fasting elements such as nails, bolts, pins in an object, includes a combustion chamber (13), a fuel source (11), a fuel conduit (12) connecting the fuel source (11) with combustion chamber (13) for feeding fuel thereinto, and at least one metering device (30) for metering a predetermined amount of fuel for effecting a setting process and having at least one variable volume metering chamber (31), and a displaceable piston body (34) for a pulsed ejection of fuel from the metering chamber (31).

Description

technical field [0001] The invention relates to a combustion-powered installation tool of the type stated in the preamble of claim 1 . Such a setting tool can be driven with a gaseous or liquid fuel, which is burned in a combustion chamber and simultaneously drives a thrust piston for the fastening element. Background technique [0002] Generally, it is a matter of dispensing fuel with a calibrated corresponding quantity of air or oxygen as oxidant per working cycle. The amount of oxygen available for combustion depends strongly on the ambient temperature as well as air pressure and air humidity. The required fuel quantity therefore fluctuates strongly with the above-mentioned parameters, in extreme cases up to 40%. Such fluctuations can adversely affect the combustion of the air-fuel mixture when the air-fuel mixture is too rich or too little in terms of fuel. It is therefore desirable to adapt the fuel quantity to the corresponding ambient conditions. For the best poss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25C1/08
CPCB25C1/08
Inventor 克施文德·汉斯特菲吉·卡韦赫弗尔克·洛塔尔席斯特尔·乌尔里希沃尔夫·伊万罗森鲍姆·乌尔里希
Owner HILTI AG