EP0645217B1 - Non-destructive hammer - Google Patents

Description

The invention relates to a soft hammer with at least a hammer insert held in a housing and one handle sleeve connected to the housing for the hammer handle, the housing and the stem made of two half-shells are composed in one by the longitudinal axis of the housing and the stem spout level lie against each other and firmly against each other at the edges are connected, and being the two half-shells are each formed in one piece.

In a hammer known from US-A-2 894 550 the hammer handle and part of the housing from one elongated metal strip in the area of the case is annular to accommodate the hammer head. The free ends of the strip that hold the hammer handle form, are enclosed by a handle. The Hammer head itself is solid.

This ensures that the housing from the Do not loosen the stem sleeve and throw it out in an uncontrolled manner can be.

The object underlying the invention is therefore in a soft hammer of the type mentioned, at which the detachment of the housing from the stem is practically excluded, so that Functionality even under high loads remains guaranteed to train so that he a Setback has a dampening effect and this setback effect also afterwards Application can be varied accordingly.

This object is achieved according to the invention in that part of the cavity formed in the housing with shot is filled, the filling of the cavity by the Socket formed opening is provided.

Such a design of the soft mallet achieved that he set back the mallet has a dampening effect. The opening can be opened by a releasably inserted plug can be closed, so that it is possible, even after the baffle plate has been welded in and the insertion of the impact insert the shot filling to replace and so a variation of the damping effect to reach.

Such a soft-face hammer is particularly simple Way to manufacture, especially if both Half-shells formed in one piece from a sheet metal blank are, for example by non-cutting shaping this Sheet metal blank.

In principle, the two half-shells can be separated be made from each other. Is of particular advantage it, however, if both half shells are made in one piece common sheet metal blank are formed. The two half shells basically on any Place to be connected; it is advantageous but when both half-shells on the housing together are connected, because then in the area of the occurring Impact forces increased strength is achieved.

Furthermore, it is recommended that the edges side by side connected half shells at their mutual Contact surfaces of the housing and / or the stem welded together or otherwise inseparable are connected. The welds to be made are not subject to a comparable burden as that Weld seam between the housing and the grommet according to the status of the technique.

In a further preferred embodiment is in Transition area between the housing and the grommet Reinforcement rib provided from the edge of each the edge strips adjoining the half-shells, where the two together have a reinforcing rib forming edge strips lie flat against each other and on their free edge are welded together. This will not only the area of the Sheet metal cutting used sensibly, but the Strength in the area between the housing and the stem further increased.

The housing expediently points at each of its two End faces an opening in the distance from the edge the opening a baffle plate is arranged on which the in the housing insert is in contact. The The baffle plate can be provided with a collar on the edge be flush with the edge of the opening and welded to it or otherwise unsolvable connected is.

Furthermore, it is recommended to use the soft mallet like this train that the impact insert and the housing one non-circular cross-section to prevent twisting exhibit. This is expediently achieved by that the housing and the impact insert in cross section are rectangular.

It is also advantageous if in the housing for stiffening the housing wall beads are molded, since then thinner Sheet metal for sheet metal cutting and for forming the Half shells can be used. In more preferred Embodiment provides that the beads are parallel are aligned with the edge of the opening and stops for form the baffle.

There is also the possibility that the hammer handle is integrally formed on the stem. A special one good mounting and fastening of the impact insert reached when the baffle plate is facing inwards Beads for mounting the impact insert are provided.

There is also the possibility that the baffle plate to the Half-shell molded and integrally formed with it is. However, this makes the width of the Sheet cutting required.

Fig. 1

einen erfindungsgemäßen Schonhammer in einer Seitenansicht, teilweise im Schnitt;

Fig. 2

den Schnitt II-II nach Fig. 1;

Fig. 3

den Gegenstand nach Fig. 1 in Draufsicht, teilweise im Schnitt;

Fig. 4

den Schnitt IV-IV nach Fig. 3;

Fig. 5

die Prallplatte in ungeformtem Zustand;

Fig. 6

die zum Einsatz in das Gehäuse geformte Prallplatte und

Fig. 7

den Schnitt VII-VII nach Fig. 6.

In the following the invention is explained in more detail using an exemplary embodiment shown in the drawing; show it:

Fig. 1

a soft hammer according to the invention in a side view, partly in section;

Fig. 2

the section II-II of FIG. 1;

Fig. 3

the object of Figure 1 in plan view, partially in section.

Fig. 4

the section IV-IV of Fig. 3;

Fig. 5

the baffle plate in the unshaped state;

Fig. 6

the baffle plate shaped for use in the housing and

Fig. 7

the section VII-VII of FIG. 6th

The embodiment of the shown in the drawing Schonhammers consists of two in one housing 1 held impact inserts 2 and one on the housing 1 attached stem 3 for the hammer handle 16. Das Housing 1 and the stem 3 are made of two Half shells 5, 6 composed in one by the Longitudinal axis 4 of the housing 1 and the stem 3 level. The two Half-shells 5, 6 are firmly attached to one another at the edge connected by mutual Contact surfaces of the housing 1 and the stem 3 are welded together. The two half shells 5, 6 each form a half 3 of the stem and the Housing 1, are thus formed in one piece. Furthermore are also both half-shells 5, 6 on the housing 1 interconnected so that both half-shells 5, 6 are formed in one piece from a sheet metal blank.

In the transition area between the stem 3 and the Housing 1 is one with housing 1 and stem 3 connected reinforcing rib 7 is provided. Furthermore points the housing 1 on the two opposite Each face has an opening for the impact inserts 2 on, at a distance from the edge of each Opening 8 a baffle plate 9 is arranged. In a further embodiment, not shown the baffle plate 9 also from the sheet metal blank shaped and integrally formed with the housing 1. The baffle plate 1 is folded into the final, 6 and 7 shown in FIGS Housing 1 welded in. Are on the baffle plate 9 Beads 10 for the holder of each Impact insert 2 is provided, which is thereby firmly in Housing 1 is held. The impact insert 2 is in the Housing 1 secured in a simple manner against rotation, since the housing 1 and the impact insert 2 in cross section are rectangular. In the housing 1 are still Molded beads 11, which reinforce the housing wall and at the same time form stops for the baffle plate 9, that is Inserting into housing 1 facilitates positioning.

The cavity 12 formed in the housing 1 of the soft mallet is filled with shot 14 through an opening 13, whereby kickback damping is achieved. This opening 13 is formed by the hollow stem 3 and is by a releasably inserted plug 15 can be closed.

In the illustrated embodiment, the Sheet metal cut selected so that the hammer handle 16 is integrally formed on the stem 3. It can the hammer handle also has a textured surface Wear plastic, rubber or the like.

Claims (15)

1. A mallet comprising at least one striker insert (2) held in a housing (1) and a handle socket (3) connected to the housing (1), for the mallet handle (16), wherein the housing (1) and the handle socket (3) are composed of two half-shell portions (5, 6) which bear against each other in a plane passing through the longitudinal axis (4) of the housing (1) and of the handle socket (3) and are firmly connected to each other at the edges, and wherein the two half-shell portions (5, 6) are each formed in one respective piece, characterised in that a part of the cavity (12) formed in the housing (1) is filled with shot (14), wherein the opening (13) formed by the handle socket (3) is provided for filling the cavity (12).
2. A mallet according to claim 1 characterised in that the opening (13) is closable by a releasably inserted plug (15).
3. A mallet according to claim 1 or claim 2 characterised in that both half-shell portions (5, 6) are formed in one piece from a common sheet metal blank.
4. A mallet according to claim 3 characterised in that both half-shell portions (5, 6) are connected together at the housing (1).
5. A mallet according to one of claims 1 to 4 characterised in that the half-shell portions (5, 6) which are connected together at the edges are welded together at their mutual contact surfaces of the housing (1) and/or the handle socket (3) or are non-releasably connected in another fashion.
6. A mallet according to one of claims 1 to 5 characterised in that in the transitional region between the housing (1) and the handle socket (3) there is provided a reinforcing rib (7) formed by edge strips which at the edge adjoin each of the half-shell portions, wherein the two edge strips which jointly form a reinforcing rib (7) bear flat against each other and are welded together at their free edge.
7. A mallet according to one of claims 1 to 6 characterised in that at each of its two ends the housing (1) has an opening (8) in which an impact plate (9) is arranged at a spacing relative to the edge of the opening (8), the striker insert (2) which is fitted into the housing bearing against the impact plate.
8. A mallet according to claim 7 characterised in that the impact plate (9) is provided at its edge with a flange which terminates flush with the edge of the opening (8) and which is welded thereto or non-releasably connected thereto in another fashion.
9. A mallet according to one of claims 1 to 8 characterised in that the striker insert (2) in the housing (1) is of a non-round cross-section to prevent it from rotating.
10. A mallet according to claim 9 characterised in that the housing (1) and the striker insert (2) are of a rectangular cross-sectional configuration.
11. A mallet according to one of claims 1 to 10 characterised in that beads (11) are formed in the housing (1) to stiffen the housing wall.
12. A mallet according to claim 11 characterised in that the beads (11) are oriented parallel to the edge of the opening (8) and form abutments for the impact plate (9).
13. A mallet according to one of claims 1 to 12 characterised in that the mallet handle (16) is formed integrally to the handle socket (3).
14. A mallet according to one of claims 7 to 13 characterised in that the impact plate (9) is provided with inwardly directed beads (10) for holding the striker insert (2).
15. A mallet according to one of claims 7 to 14 characterised in that the impact plate (9) is formed on the half-shell portion (5, 6) and is formed integrally therewith.

Images