SETTING TOOL

Abstract

A setting tool includes an anchor rod holder (31) open toward a front side of the setting tool, and a drill holder (41) that is open toward a rear side of the setting tool. The setting tool includes a passage (3) through which an anchor rod (10) accommodated in the anchor rod holder (31) may be directly, axially acted on percussively by a drill (20) accommodated in the drill holder (41). Moreover, a fastening arrangement that includes such a setting tool is provided.

Claims

1 to 11. (canceled)

12. A setting tool comprising: an anchor rod holder open toward a front side of the setting tool; and a drill holder open toward a rear side of the setting tool, the setting tool including a passage, an anchor rod accommodated in the anchor rod holder directly and axially actable on percussively via the passage by a drill accommodated in the drill holder.

13. The setting tool as recited in claim 12 wherein the setting tool includes a drill sleeve, the drill holder being formed in the drill sleeve, the drill sleeve having an inner cross-sectional restriction as an axial stop for the drill accommodated in the drill holder or as a guide for a rear end of the anchor rod.

14. The setting tool as recited in claim 12 wherein the setting tool includes a nut retaining element, a nut holder for rotatably fixedly accommodating a nut screwed onto the anchor rod being formed in the retaining element, the nut holder including a base forming an axial stop for the nut, and the anchor rod holder being formed in the base of the nut holder.

15. The setting tool as recited in claim 14 wherein the setting tool includes a drill sleeve, the drill holder being formed in the drill sleeve, the drill sleeve having an inner cross-sectional restriction as an axial stop for the drill accommodated in the drill holder or as a guide for a rear end of the anchor rod, and the nut retaining element and the drill sleeve are fastened axially displaceably with respect to one another.

16. The setting tool as recited claim 14 wherein the setting tool includes a drill sleeve, the drill holder being formed in the drill sleeve, the drill sleeve having an inner cross-sectional restriction as an axial stop for the drill accommodated in the drill holder or as a guide for a rear end of the anchor rod, and the nut retaining element and the drill sleeve are slidable into one another, the drill sleeve being situated inside the nut retaining element.

17. The setting tool as recited in claim 16 wherein the setting tool includes a bellows situated on the drill sleeve as well as on the nut retaining element.

18. The setting tool as recited in claim 17 wherein the bellows is supported on the drill sleeve as well as on the nut retaining element or the bellows forms a compression spring storing energy when the nut retaining element and the drill sleeve are slid into one another.

19. The setting tool as recited in claim 17 wherein the drill sleeve has an annular shoulder, the bellows being supported on the annular shoulder.

20. The setting tool as recited in claim 12 wherein the anchor rod holder and the drill holder are coaxially situated.

21. A fastening arrangement comprising: the setting tool as recited in claim 12; and the anchor rod, the anchor rod being situated in the anchor rod holder of the setting tool, and the drill, the drill being situated in the drill holder of the setting tool.

22. The setting tool as recited in claim 21 wherein the drill and the anchor rod have a similar diameter.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG. 1 shows a longitudinal sectional view of one specific embodiment of a fastening arrangement according to the present invention together with a setting tool according to the present invention, prior to the setting operation;

[0029] FIG. 2 shows the fastening arrangement from FIG. 1 in a longitudinal sectional view, with a deflected bellows and contact between the tip of the drill and the anchor rod during the setting operation; and

[0030] FIG. 3 shows a detailed longitudinal sectional view of a fastening arrangement according to the present invention according to a slightly modified further specific embodiment, prior to the setting operation.

DETAILED DESCRIPTION

[0031] A first exemplary embodiment of a fastening arrangement according to the present invention together with a setting tool according to the present invention is illustrated in FIGS. 1 and 2. The fastening arrangement includes a setting tool, a drill 20 with a tip 21 on the front side, and an anchor rod 10, anchor rod 10 in its rear end area including a nut 12 that is screwed onto anchor rod 10.

[0032] The setting tool in its front area includes a nut retaining element 30 designed as a sleeve. A cup-shaped nut holder 32 that is open toward the front, and in which nut 12 situated on anchor rod 10 is rotatably fixedly accommodated, is provided on the front end-face side of nut retaining element 30. Nut holder 32 may have an internal polygonal structure 39, for example, for rotatably fixedly coupling to nut retaining element 30. Toward the rear, cup-shaped nut holder 32 is delimited by a ring-shaped base 33 that forms an axial stop for nut 12. A recess is provided in ring-shaped base 33 which forms an anchor rod holder 31, and through which the rear end of anchor rod 10 that supports nut 12 is inserted into the setting tool. On its rear side opposite from nut holder 32, nut retaining element 30 includes a receiving space 35 that is open toward the rear, as explained in greater detail below.

[0033] The setting tool also includes a drill sleeve 40 in which an approximately cylindrical drill holder 41 that is open toward the rear side of the setting tool is formed. Drill 20, designed as a twist drill, is inserted into this drill holder 41. At its front end area, i.e., at its end area facing anchor rod holder 31, drill sleeve 40 has an inner cross-sectional restriction 49 that is ring-shaped, for example. This inner cross-sectional restriction 49 forms an axial stop for drill 20 accommodated in drill holder 41, in particular for tip 21 of the drill, the axial stop limiting a movement of drill 20 relative to drill sleeve 40 toward the front. As is apparent in particular in FIG. 2, inner cross-sectional restriction 49 also forms a guide for the rear end of anchor rod 10 situated in anchor rod holder 31.

[0034] Drill 20, drill holder 41, anchor rod 10, and anchor rod holder 31 are coaxially situated and define a shared longitudinal axis 99.

[0035] In its front end area, preferably at the level of inner cross-sectional restriction 49, drill sleeve 40 is accommodated in rear receiving space 35 of nut retaining element 30 and is insertable into nut retaining element 30 in a telescoping manner.

[0036] The setting tool also includes a bellows 50 that encloses drill sleeve 40 in areas. At its front end, bellows 50 is supported on nut retaining element 30, and at its rear end is supported on an annular shoulder 47 that is axial fixedly situated on drill sleeve 40. Drill holder 41 extends through this annular shoulder 47. In the present exemplary embodiment, the drill sleeve has a multipart design with a front element, having a small outer diameter, which protrudes into receiving space 35, and a rear element, having a large outer diameter, on which annular shoulder 47 is formed. However, a one-part design is also possible. In the present exemplary embodiment, the wall of bellows 50 has a sinusoidal undulating structure in the longitudinal section. However, other wall shapes are also possible.

[0037] Receiving space 35 of nut retaining element 30 and inner cross-sectional restriction 49 form a passage 3 through which drill 20, accommodated in drill holder 41, with its front-side tip 21 may act directly axially and percussively on the rear end-face side of the anchor rod situated in anchor rod holder 31.

[0038] FIG. 1 shows the state of the setting tool prior to the actual setting operation, but after anchor rod 10 and drill 20 have already been inserted into corresponding holders 31 and 41. In this state, drill 20 is still spaced apart from anchor rod 10. After the state shown in FIG. 1 is assumed, drill 20 is moved axially forward toward the rear end of anchor rod 10 until drill 20 extends through passage 3 and rests against the rear end of anchor rod 10. Drill sleeve 40 is hereby axially pushed into receiving space 35 of nut retaining element 30, axially fixed by nut 12 and base 33, by drill 20 which rests against inner cross-sectional restriction 49, the bellows 50 deflecting radially with storage of energy. The resulting state is shown in FIG. 2. In this state, percussive pulses introduced into drill 20 may be relayed by drill 20 directly to anchor rod 10 resting against drill 20. The percussive pulses may preferably be introduced at the end area of drill 20, for example by a drive, not illustrated, that is situated at the rear end area, i.e., at the end area of drill 20 opposite from tip 21.

[0039] Another specific embodiment of a fastening arrangement according to the present invention is shown in FIG. 3. This specific embodiment differs from the specific embodiment discussed above solely in that anchor rod 10 according to FIG. 3 includes an additional protective cap 100 made of plastic, for example, at its rear end area facing drill 20. This protective cap 100 in particular covers the rear end-face side of anchor rod 10 against which drill 20 acts percussively, and thus protects the rear end-face side. The remaining features correspond to the specific embodiment in FIGS. 1 and 2, so that in this regard reference is made to the discussion corresponding thereto.