WO2010066544A1

WO2010066544A1 - Assembly tool

Info

Publication number: WO2010066544A1
Application number: PCT/EP2009/065311
Authority: WO
Inventors: Joachim Tiemann; Ulrich Knebel; Erhard Hackler; Werner Wied
Original assignee: Ejot Baubefestigungen Gmbh
Priority date: 2008-12-10
Filing date: 2009-11-17
Publication date: 2010-06-17
Also published as: EP2364242A1; DE102008061430B4; DE102008061430A1

Abstract

The invention relates to an assembly tool for the assembly of pegs (30), comprising a plate (31), a peg sleeve (32) and an expansion element (33) in an insulation and a substructure having a base element (1,10) and a piston element (4, 14) movable in the base element. The piston element is fastened in the base element by means of a coupling element (6) up to the limit of a predetermined force or the piston element is fastened to a second securing means (3) within the base element by means of a first securing means (16,17) up to a stop thereof. The invention also relates to a corresponding method.

Description

November 16, 2009 EJOT Baubefestigungen GmbH E 116635 WO JH / JSz / sem

assembly tool

The present invention relates to an assembly tool and a method for surface flush mounting of dowels in an insulating material and a substructure.

From DE 198 40 521 a two-part assembly tool is known, which has an outer guide sleeve and a core which can be moved in the guide sleeve. However, the range of free displaceability of the core in the guide sleeve is limited. The cylindrical core has approximately in the middle of a circumferential, projecting ring, due to which the entire core is movable up and down only over the length of a recess provided in the guide sleeve specifically for the ring. The ends of the recess thus each represent a stop for the displaceability of the core in the guide sleeve. If the core protrudes upward beyond the guide sleeve, a dowel and an expansion element can be introduced at the opposite end of the guide sleeve. If one pushes the core into the guide sleeve, the plug is first pressed downwards out of the guide sleeve and at the same time introduced into a correspondingly provided borehole in the substructure. Upon displacement of the core within the guide sleeve until the stop of the ring at the lower end of the recess - so that the core terminates at its upper end with the upper end of the guide sleeve - the expansion element is driven into the dowel, ie in the expansion zone. The End position of the expansion element within the dowel is thus determined by the erfϊndungsgemäße mounting tool, ie one achieves an assembly check or reinsurance that the spreader is properly anchored in the dowel. However, this assembly tool does not ensure a uniform setting depth of the pressure plate in the insulation board.

It is therefore an object of the present invention to provide a mounting tool with which a flush mounting a dowel can be guaranteed regardless of the skill, muscle strength or experience of an operator in a predefined manner.

This object is achieved by a mounting tool for mounting dowels with a pressure plate, a dowel sleeve and an expansion element in an insulating material and a substructure, comprising a base body and a piston movable in the base member, wherein the piston member by means of a coupling element to overcome a predetermined Force is fixed in the body; and by an assembly tool in which the piston element is fixed by means of a first securing means until it stops at a second securing means within the base body; and by a method comprising the steps of a) boring a borehole, b) placing the mounting tool on the dowel, c) setting the dowel by predetermined tooling by approximately the thickness of the pressure plate into the insulation material, d) decoupling the piston element from the tool and e ) Driving the expansion element into the substructure.

In a preferred embodiment of the invention, the piston element has at least a first part and a second part. The first part is screwed to the second part or locked or otherwise solvable connected to allow a replacement depending on the length of the dowel used or its expansion element.

In another preferred embodiment of the invention, the coupling element is designed as a resilient pressure piece, which conventionally comprises a ball and a spring. In this way, it is ensured that the piston element is released only when a predetermined by the spring of the pressure element force is reached or exceeded, which is required for flush mounting of the plate dowel in the insulation. The plate of the dowel can thus not accidentally protrude from the insulation surface after assembly. Incidentally, a plurality of resilient pressure pieces arranged circumferentially on the main body or housing can also be provided. Apart from one or more resilient pressure pieces, other spring or holding mechanisms are also conceivable (eg frictional, magnetic, electromagnetic or hydraulic mechanisms).

In a particularly preferred embodiment of the invention, the base body has a depth stop at its front end. By this configuration is effectively prevented that the plate of the anchor is driven in the assembly too far into the insulation.

In a further preferred embodiment of the invention, the base body has a stop element for the piston element. In this way, the displacement of the piston element is limited within the main body or the housing, which in turn has a predetermined uniform depth of the expansion element used result.

In another preferred embodiment of the invention, the

Body on a protective cap at its rear end. As a result, the assembly tool is protected from damage due to the effect a striking tool can be used, which is used for applying a striking force to the rear end of the piston member. Preferably, the protective cap is designed so that it also surrounds the or the resilient plungers. As a material for the protective cap come rubber or a suitable elastic plastic in question.

In a preferred embodiment of an alternative assembly tool according to the invention, the piston element again has at least a first part and a second part. The first part is correspondingly screwed or latched or otherwise detachably connected to the second part, in order to enable a replacement depending on the length of the anchor used or of its expansion element.

According to a particularly preferred embodiment of the alternative assembly tool according to the invention, the first securing means comprises a guide sleeve with a lock. In particular, the rear or first part of the piston element is kept fixed in the pre-assembly state by the guide sleeve or the lock. This means that the piston element is movable only to a limited extent within the main body or the housing and in particular can not perform a relative movement with respect to the guide sleeve itself. The lock can be plugged onto the guide sleeve, screwed or latched with this or connected in any other suitable manner.

In a further preferred embodiment of the alternative assembly tool according to the invention, the lock has expandable hook means. These are regularly designed so that they are by means of a projection with the end face of the rear part of the piston element in engagement. However, the hook means can be pivoted or spread so that they release the first part of the piston element. For example, the projection may be disengaged from the face of the first part the piston member are pivoted, so that the piston member can perform a relative movement with respect to the guide sleeve.

In a further preferred embodiment of the alternative assembly tool according to the invention, the second securing means comprises a hollow cylinder with a bevelled stop face. Now, when the first securing means or the guide sleeve meets with the locking with the front ends of the hook means on the tapered stop surface of the hollow cylinder, the lock is spread or pivoted, so that the rear end of the piston member is released. For this purpose, of course, any other mechanism can be used in which it comes after a defined displacement of one or more elements to release one or more of these or other elements of the mechanism, regardless of whether this mechanism on form fit or frictional engagement or on electric, magnetic or Electromagnetic or hydraulic principles.

In another preferred embodiment of the alternative assembly tool according to the invention the base body comprises a stop plate with a recess for a plate of a plate anchor. In this way, the predetermined flush mounting of the plate dowel can be achieved particularly efficiently, because the depth of the recess corresponds approximately to the thickness of the plate of the plate dowel and thus approximately the distance traveled by the first securing element until the release of the rear part of the piston element must become. During this - short - distance the piston element is still fixed by the first securing means.

In a preferred embodiment of the method according to the invention, in step c) the driving in of the plug takes place by overcoming a predetermined force, a fixation of the piston element within the basic body being released. In another preferred embodiment of the inventive method in step c) driving the dowel overcoming a predetermined path, wherein a fixation of the piston member is dissolved within the body.

The assembly tool according to the invention and the assembly method according to the invention are illustrated in detail with reference to the attached drawings. Show it:

Fig. 1 is a perspective view of an assembly tool according to the invention;

FIG. 2 shows a cross-sectional view of a mounting tool according to the invention which has been plugged onto a plate plug in the preassembled state; FIG.

Fig. 3 is a cross-sectional view of a plugged onto a plate anchor alternative mounting tool according to the invention in

preassembled condition;

4 shows a cross-sectional view of an alternative assembly tool according to the invention during a setting process.

Fig. 1 shows an inventive assembly tool with a base body 1, which is plugged with its depth stop 3 on the plate 31 of a dowel 30 with subsequent dowel sleeve 32. On the rear end of the housing 2 of the main body 1, a protective cap 5 is applied with an opening through which a piston member 4 extends therethrough. In which Insulating material and the substructure in which the dowel is mounted (not shown) are usually commercially available insulating boards or masonry.

The structure of the mounting tool is shown in more detail in FIG. As can be seen, here the piston element 4 is fixed in the base body 1 by means of a coupling element 6 in the form of a resilient pressure piece. This fixation continues until a z. B. by the spring force of the resilient pressure piece 6 predetermined force is overcome by a corresponding impact pulse to the rear end of the piston member 4. The piston element 4 has at least a first part 4a and a second part 4b. In this case, the second part 4b of the piston member 4 has a threaded portion 8 at its rear end, which is bolted to a corresponding threaded hole 9 at the front end of the first part 4a of the piston member 4. The threaded portion 8 is formed slightly shorter than the threaded hole 9 in the rule. The front end of the second part 4b of the piston member 4 protrudes into the sleeve 32 of the anchor 30 and is located at the rear end of the expansion pin 33 at. The outer diameter of at least the front end of the second part 4b of the piston element 4 corresponds approximately to the inner diameter of the dowel sleeve 32, in which the expander pin 33 is inserted. The dowel sleeve 32 has, except for the expansion zone 34 at the front end of the dowel sleeve 32 continuously approximately the same inner diameter. In this respect, the expansion pin 33 does not need to have a head. The arranged at the front end of the housing 2 of the base body 1 of the mounting tool depth stop 3 has regularly a larger diameter than the plate 31 of the dowel 30 so that the assembly process of the dowel 30 can be set flush with the surface without damaging the surrounding insulation material. If the resilient pressure piece 6 is pressed out of a corresponding recess 6a in the first part 4a of the piston element 4 by a corresponding impact pulse, the piston element 4 is inside the housing 2 of the Base body 1 slidable by the length or distance X until it abuts against a stop element 7 in the form of a grub screw, which projects into the bore Ia of the main body 1. For this purpose, in the rear region of the second part 4b of the piston element 4 - which regularly has a larger diameter than the front region, which projects into the dowel sleeve 32 - a recess 7a is provided, the displaceability of the piston element 4 and thus also the Einschlagtiefe the Spreizstifts 33rd limited to the length X. On the rear end of the housing 2, a protective cap 5 is applied, which also surrounds the resilient pressure member 6 and through which the first part 4a of the piston member 4 protrudes in the pre-assembly according to the length X.

Fig. 3 shows in detail the structure of an alternative assembly tool according to the invention in the pre-assembly with a introduced into the recess 22 of the stop plate 12 of the base body 10 plate 31 of a dowel 30. As can be seen, the piston member 14 by means of a first securing means 16, 17 within the Fixed body 10. The first securing means consists of a guide sleeve 16 and a lock 17. The guide sleeve 16 surrounds the front region of the first part 14 a of the piston element 4 and is connected to the lock 17. The lock 17 comprises expandable hook means 17a and projections 17b. For example, an O-ring 20 may be provided around the latch 17 for support. The lock 17 blocks in the pre-assembly position by means of the projections 17 b, the end face of the first part 14 a of the piston member 14, so that the piston member 14 can perform no relative movement relative to the first securing means 16, 17. The front ends of the hook means 17a of the latch 17 are engaged with the rear end of a pusher 23, which rests with the pusher plate 23a on the top of the plate 31 of the peg 30. The thrust plate 23a of the thrust sleeve 23 has a smaller diameter than that of the plate 31 of the dowel 30. In other words, the recess 22 of the stop plate 12 takes both the plate 31 of the dowel The second part 14b of the piston member 14 is in turn screwed to a threaded portion 18 at its rear end with a threaded bore 19 in the front region of the first part 14a of the piston member 14, in turn, the threaded portion 18th the threaded hole 19 does not completely fill. The second part 14b of the piston member 14 projects through the housing 11 into the dowel sleeve 32 and abuts the rear end of the expansion pin 33, which is inserted into the dowel sleeve 32 until shortly before the beginning of the expansion zone 34. In this case, the first part 14a also passes through a bottom plate 21, which is arranged flush with the thrust plate 23a in the thrust element 23 and is sealed with an O-ring 20 relative to the piston element 14. The stop plate 12, which surrounds the thrust element 23 on its outer side, has at its rear end a second securing element 13 in the form of a hollow cylinder 13 with a bevelled stop surface 13a. Between the outer wall of the thrust element 23 and the inner wall of the stop plate 12, a further O-ring is arranged. The rear end of the housing is screwed to a protective cap 15, through which protrudes the first part 14 of the piston member 14 with the plunger stopper 14c. Between the opening of the protective cap 15 and the first part 14a, an O-ring may be provided.

If now, as shown in Fig. 4, a shock pulse applied to the plunger stop 14c of the piston member 14, the piston member 14 together with guide sleeve 16 and locking 17 and the thrust element 23 with thrust plate 23a and bottom plate 21 by a length or distance Xl (see 3) pushed forward until the hook means 17a of the lock 17 abut with their front ends on the tapered stop surface 13a of the first securing element or hollow cylinder 13 of the stop plate 12. The length Xl corresponds approximately to the thickness of the plate 31 and the depth of the recess 22. The hook means 17a then slide on the tapered stop surface 13a to the outside, so that the latch 17 spreads and the projections 17b, the first part 14a and thus the entire Piston element 14 release. The fixation of the piston member 14 within the body through the guide sleeve 16 and the lock 17 is thus repealed (the guide sleeve 16 may possibly have recesses for the rear ends of the latch 17). Now, the piston member 14 can be moved by the length or distance X2 to the stop of the end face of the first part 14a of the piston member 14 on the bottom plate 21. The spreader pin 33 (not shown) is accordingly hammered around this length X2 so that it can (not shown) anchor the dowel 30 (not shown) in the respective substructure (not shown) via the spreader zone 34. The hook means 17a are regularly designed so that they can engage with the rear end of the pusher 23 in a suitable manner, when the piston member is retracted for a new setting operation (Repitierfunktion). The piston element can thus be retracted only a defined amount.

For both assembly tools 1, 10, the assembly of the dowel 30 is based on a common basic principle, which consists of the following steps: a) drilling a hole in the substructure, b) placing the assembly tool on the dowel 30, c) by predetermined setting of driving the tool Dowels 30 about the thickness of the plate 31 in the insulation, d) decoupling the piston member 4, 14 of the tool, and e) driving the expansion element 33 in the substructure. In the first alternative, however, the driving in of the plug 30 takes place after step c) while overcoming a predetermined force, wherein a fixing of the piston element 4 within the main body 1 is released (power transmission coupling). In the second alternative, the driving in of the dowel 30 takes place after step c), overcoming a predetermined distance X1, a fixation of the piston element 14 within the main body 10 being released (force-displacement coupling). It is clear to the person skilled in the art that the above-described common basic principle also applies by way of corresponding mechanical, electrical, magnetic, electromagnetic or hydraulic modifications can be achieved without departing from the scope given by the present invention.

Claims

November 16, 2009 EJOT Baubefestigungen GmbH El 16635WO JH / JSz / semPatentansprüche

1. assembly tool for mounting dowels (30) with a plate (31), a dowel sleeve (32) and an expansion element (33) in an insulating material and a substructure, comprising a base body (1) and in the base body (1) movable Piston element (4),

characterized in that

the piston element (4) is fixed in the base body (1) by means of a coupling element (6) until a predetermined force is overcome.

2. Assembly tool according to claim 1, characterized in that the piston element (4) has at least a first part (4a) and a second part (4b).

3. Assembly tool according to one of the preceding claims, characterized in that the coupling element (6) is designed as a resilient pressure piece.

4. Assembly tool according to one of the preceding claims, characterized in that the base body (1) has a depth stop (3) at its front end.

5. Assembly tool according to one of the preceding claims, characterized in that the base body (1) has a stop element (7) for the piston element (4).

6. Assembly tool according to one of the preceding claims, characterized in that the base body (1) has a protective cap (5) at its rear end.

7. assembly tool for mounting dowels (30) with a plate (31), a dowel sleeve (32) and a spreading element (33) in an insulating material and a substructure, comprising a base body (10) and in the base body (10) movable Piston element (14),

characterized in that

the piston element (14) is fixed by means of a first securing means (16, 17) to the stop thereof on a second securing means (13) within the base body (10).

8. Assembly tool according to claim 7, characterized in that the piston element (14) has at least a first part (14a) and a second part (14b).

9. Assembly tool according to one of claims 7 to 8, characterized in that the first securing means (16, 17) comprises a guide sleeve with a lock.

10. Assembly tool according to claim 9, characterized in that the lock (17) has spreadable hook means (17a).

11. Assembly tool according to one of claims 7 to 10, characterized in that the first securing means (13) comprises a hollow cylinder with bevelled stop surface (13a).

12. Assembly tool according to one of claims 7 to 11, characterized in that the base body (10) comprises a stop plate (12) having a recess (22) for a plate (31).

13. A method for assembling dowels (30) with a plate (31), a dowel sleeve (32) and an expansion element (33) in an insulating material and a substructure by means of a mounting tool with a base body (1, 10) and one in the base body (1, 10) movable piston element (4, 14), comprising the steps:

a) drilling a borehole; b) placing the assembly tool on the dowel (30); c) by setting the tool predetermined driving the dowel (30) by about the thickness of the plate (31) in the insulating material; d) decoupling the piston element (4, 14) from the tool; e) Driving the expansion element (33) in the substructure.

14. The method according to claim 13, characterized in that in step c) the driving of the plug (30) takes place by overcoming a predetermined force, wherein a fixation of the piston member (14) within the

Basic body (1) is released.

15. The method according to claim 13, characterized in that in step c) driving the dowel (30) while overcoming a predetermined distance (S), wherein a fixation of the piston member (14) within the main body (10) is released.