Combustion-engined setting tool

• US 20060175374A1
• Filed: 02/08/2006
• Published: 08/10/2006
• Est. Priority Date: 02/10/2005
• Status: Active Grant

• Current Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Original Assignee: Hilti Aktiengesellschaft (Hilti Martin Family Trust)
• Inventors: Zahner, Mario, Tille, Dierk, Rosenbaum, Ulrich
• Granted Patent: US 7,275,673 B2
• Time in Patent Office: Days
• US Class Current: 227/10
• CPC Class Codes: B25C 1/08 operated by combustion pressure
• CPC Class Codes: B25C 1/14 acting on an intermediate plunger or anvil pistols for slaughtering or stunning animals A22B3/02

Abstract

A combustion-engined setting tool for driving fastening elements in a constructional component, includes a guide cylinder (12), a setting piston (11) displaceable in the guide cylinder (12), a combustion chamber sleeve (15) displaceably arranged at the first axial end (27) of the guide cylinder (12), a press-on element (30) supported at the second axial end (28) of the guide cylinder (12), and a transmission device for connecting the press-on element (30) with the combustion chamber sleeve (15) and formed as a cable drive (20) having a transmission member (21, 121) and at least one deflection roller (24, 124) for the transmission member (21, 121) and supported on the press-on element (30).

Claims

1. A combustion-engined setting tool for driving fastening elements in a constructional component, comprising:

a guide cylinder (12) having opposite first (27) and second (28) axial ends;

a setting piston (11) displaceable in the guide cylinder (12);

a combustion chamber sleeve (15) displaceably arranged at the first axial end (27) of the guide cylinder (12);

a press-on element (30) supported at the second axial end (28) of the guide cylinder (12) in front thereof for displacement relative thereto; and

a transmission device for connecting the press-on element (30) with the combustion chamber sleeve (15) for converting a press-on displacement of the press-on element (30) into displacement of the combustion chamber sleeve (15), the transmission device being formed as a cable drive (20) having a transmission member (21, 121) and at least one deflection roller (24, 124) for the transmission member (21, 121) and supported on the press-on element (30).

2. A combustion-engined setting tool according to claim 1, wherein the transmission member (21, 121) is secured with a first end (22) thereof to the press-on element (30) and with a second end (23) thereof to the combustion chamber sleeve (15), and wherein the transmission device includes at least one second deflection roller (25) for the transmission member (21) supported on a member displaceable relative to both the press-on element (30) and the combustion chamber sleeve (15).

3. A combustion-engined setting tool according to claim 2, wherein the at least one second deflection roller (25) is supported on the guide cylinder (12).

4. A combustion-engined setting tool according to claim 1, wherein the transmission member (21, 121) is secured with a first end (22) thereof to the guide cylinder (12) and with a second end (23) thereof to the combustion chamber sleeve (15).

5. A combustion-engined setting tool according to claim 1, further comprising at least two spring elements (17, 18) arranged, respectively, between the guide cylinder (12) and the combustion-chamber sleeve (15) and between the guide cylinder (12) and the press-on element (30), wherein the spring element (18), which are arranged between the guide cylinder (12) and the press-on element (30) has a higher spring force than the spring element (17) arranged between the guide cylinder (12) and the combustion chamber sleeve (15).

6. A combustion-engined setting tool according to claim 1, wherein the transmission member (21, 121) is formed as a cable.

7. A combustion-engined setting tool according to claim 1, wherein the transmission member (21, 121) is formed as a steel cable.

8. A combustion-engined setting tool according to claim 1, wherein the press-on element (30) is formed as a ball guide (13).

9. A combustion-engined setting tool according to claim 1, wherein the cable drive has two separate transmission members (21, 121) arranged symmetrically, and at least one first deflection roller (24, 124) for each transmission member (21, 121) and which is provided on the press-on element (30).

10. A combustion-engined setting tool according to claim 1, further comprising guide means (35) for guiding the press-on element (30) parallel to the guide cylinder (12).