EP1005959B1 - Method for setting a base element for fastening an element and fastener-driving tool for carrying out the method - Google Patents

Abstract

With the help of a plug fixing tool having a plug guide (30) the base and the end (23) of the plug guide are fixed together by relative movement in a plane perpendicular to the plug guide axis (21). The base is applied against a receptor support (100) and is fixed by a plug. When the base constitutes a female part to be fixed to the end of the plug guide this has an external annular groove (24) for receiving a base clipping jaw (11).

Description

In the building sector, fasteners are often used for attach to a support cables, tubes, chutes, and other parts of this type.

A cable attachment base, to use this example, includes means for supporting the cable and means for fixing the base to the support.

To fix the base to the support, one generally uses a nailer provided with a buffer-guide that is secured, by its end, to the base, for example by depression of the end of the buffer guide in a receiving recess of the base.

For safety reasons, the Nailer includes a security system that prohibits any shot of buffer without the prior support of the Nailer against a mounting bracket.

However, there is a significant risk of causing the unlocking of the security system by securing a fixing base and the end of the Nailer buffer guide, by axial thrust (ie in the direction of the axis buffer guide) of the end of the buffer guide against the base. In these conditions, the Nailer may be trained in the support and firing position without being in support against a support.

The invention aims to overcome this drawback.

For this purpose, the invention relates to a method of installing a mounting base from one piece to a support, using a buffer attachment tool provided with a buffer guide according to claim 1.

Thanks to this, for the fastening of the base and the end of the buffer guide, there is no longer an axial thrust force but a radial force, so that there is no risk of unlocking the security system. In Moreover, thanks to the invention, it is possible to reduce the minimum effort required to drive the fixing tool in the support position. This reduces the fatigue of the operator for example when laying, with one hand, a base fixing on a ceiling.

Note that in US-A-3998372, the base and the buffer guide are not solidarized as in the invention because of an arm that is activated to make rotate an arm and wedge the base.

In EP-A-721032, the securing of a plate and an adapter is carried out along the axis of the buffer guide.

As for EP-A-931625, it also teaches the introduction of an element into its holder element by axial movement and clipping.

The relative movement of the base and the end of the buffer guide may be a translational movement, preferably translational motion straight.

Advantageously, the end of the buffer guide and the base are secured by clipping.

The invention also relates to a tool for carrying out the method previously defined, comprising a buffer guide arranged to become solid with the mounting base, characterized in that the base forming a part male for securing with the end of the buffer guide, the buffer guide provides a lateral and axial slot for passage of the base.

The invention also relates to a tool for carrying out the method comprising a buffer guide arranged to become solid with the mounting base, characterized in that the base constituting a female part for the solidarization with the end of the buffer guide, the buffer guide is provided with blocking means of the base.

Advantageously, the blocking means of the base comprise a throat annular outer receiving a clipping jaw of the base.

• la figure 1 représente une vue de dessus de l'embase de fixation, selon la forme de réalisation particulière ;
• la figure 2 représente une vue de dessous de l'embase de la figure 1;
• la figure 3 représente une vue en perspective de l'embase de la figure 1;
• la figure 4 représente une autre vue en perpective de l'embase de la figure 1 montée sur une extrémité de guide-tampon et
• la figure 5 représente une vue en coupe latérale de l'embase et de l'extrémité de guide-tampon de la figure 4.

The invention will be better understood with the aid of the following description of the fixing base and the fixing tool of the invention, in a particular embodiment, as well as a particular embodiment of the method. laying the fixing base, with reference to the appended drawing in which:

• Figure 1 shows a top view of the mounting base, according to the particular embodiment;
• Figure 2 shows a bottom view of the base of Figure 1;
• Figure 3 shows a perspective view of the base of Figure 1;
• FIG. 4 represents another perspective view of the base of FIG. 1 mounted on a buffer guide end and
• FIG. 5 represents a side sectional view of the base and the end of the guide-buffer of FIG. 4.

The base, intended here to attach a cable to a support, is monobloc and has an axis 5 and an axial plane of symmetry P, containing the axis 5, all two perpendicular to the plane of Figures 1 and 2.

The base comprises a lower part 10, a base, fixing to support and an upper part 20 of attachment to one end of buffer guide of a stamp attachment tool. The lower part 10 and the upper part 20 are joined to each other by a joint plane perpendicular to the axis 5.

The lower part 10, generally in the form of a flat cylinder of axis 5, comprises, on the lower side opposite the upper part 20, a surface 6 support against the support, perpendicular to the axis 5, and household, the side upper, a recess 1, substantially of parallelepipedal shape, having a bottom 2. A central hole 3, centered around the axis 5, and crossing, receiving a buffer is provided in the bottom 2, as well as two openings 4, 4 ', respectively on either side of the plane P.

The upper part 20 comprises two parts 12, 12 'each presenting a form of ring portion, disposed facing one another, from and other plane of symmetry P, and thus forming a jaw 11 of clipping, gripping the end of the buffer guide of the tool fixation. The two parts 12, 12 'of the jaw 11 form between them a 15 receiving space of the buffer guide end, extending laterally and axially, on both sides of the axis 5, respectively by two lateral and axial openings 14, 14 'passing through the end of the guide buffer.

By the terms "axial" and "axially" is meant here to describe what extends in an axial plane, in this case for the base plane P containing the axis 5.

Each portion 12, 12 'of the jaw 11 is, in its lower portion of junction with the lower part 10, crossed by a light 13, 13 ' communicating with the recess 1, provided for the passage of a thong of maintaining the cable to be fixed and for receiving the end of the buffer guide, as will be explained later.

The portion of the lower portion 10, located substantially in the lower extension of each of the parts 12 (12 ') of the jaw 11, extends slightly outwards, beyond the jaw 11, and presents an upper surface 16 (16 '), jaw side 11, receiving, support a strap to hold the cable to fix.

The stamp attachment tool of the invention, for attachment to a carrier of the base described above, differs from a conventional fastening tool of the type of the one described by the document FR-9514763, that by certain elements which will now be described. For the sake of clarity, only the elements necessary to understand the invention will be explained.

The attachment tool comprises, in a conventional manner, a buffer guide 30 and a security system.

The buffer guide 30, extending along an axis 21, is intended to receive a buffer and, after being pressed against a fixing support, to guide this buffer propelled forward during a shot, so that it sinks correctly in the holder. For fixing the base previously described in a support, the end 23 of the buffer guide 30 is arranged to to be secured to the base, as will be explained more specifically by the following.

The security system is arranged to lock the tool in position of rest and unlock it in the resting position against a support of fastening, the unlocking taking place under the action of a thrust force axial (that is to say parallel to the axis 21) of the tool against the support. Thanks to this, the security system prohibits any shot of buffer without implementation. prior support of the buffer guide against the support.

The end 23 of the buffer guide 30 has an outer annular groove 24, receiving and locking the jaw 11 of the base. "The end" here is the free end portion of the buffer guide, which by definition is located at the front of the attachment tool.

The anterior wall 25 of the groove 24, the closest to the end edge free anterior buffer guide 30, is inclined on the axis 21, the groove 24 flaring towards the anterior end of the buffer guide 30.

The portion 22 of the end of the buffer guide located between the front edge free end of the buffer guide 30 and the groove 24, in other words at the front groove 24, has an outer diameter smaller than that of the portion of the buffer guide 30 located at the rear of the groove 24, so as to facilitate the securing the base and the end 23 of the buffer guide 30.

After the structural description of the base and the fastening tool of buffer, the method of laying the base on a support 100 will now to be described.

For the installation of the base on the support 100, the base is first secured. and the end 23 of the buffer guide 30 of the fixing tool, and then fixed the base to the support 100 with a buffer.

Solidarization of the base and the end of the buffer guide

For securing the base and the end of the buffer guide, mount the base on the end 23 of the buffer guide 30 by training the base and the end 23 of the buffer guide 30, relative to each other, in a relative motion here of rectilinear translation, in a plane perpendicular to the axis 21 of the buffer guide 30, as well as to the axis 5 of the base. During this movement, the end is introduced laterally. 23 of the buffer guide 30 inside the jaw 11 of the base, that is to say in the reception space 15, by passing through one of the lateral and axial openings 14, 14 ', so that the axis 5 of the base and the axis 21 of the buffer guide are merged.

During this translation movement in the plane perpendicular to the axis 21, there is no axial force, parallel to this axis 21, but only a radial force, that is to say perpendicular to the axis 21, so that will not unlock the security system of the fastener.

The jaw 11, received in the groove 24, grasps and grips the end 23 of the buffer guide 30, the jaw 11 and the buffer guide 30 thus solidifying by clipping. The annular peripheral portion of the anterior portion 22 of the end 23 of the buffer guide 30 is partially introduced into the lights 13, 13 'of the base and the rear wall of the groove 24 is in bearing against the upper surface of the parts 12, 12 'of the jaw 11. In this position, the groove 24 blocks the base, making difficult all relative movement of the base and the end 23 of the buffer guide 30, one with respect to the other, in translation parallel to the axes 5 and 21 confused.

It will be emphasized here that the base is a female part and the end 23 of the buffer guide 30 a male part for the joining of one and the other.

Fixing the base to the support

After mounting the base on the end 23 of the buffer guide 30, one applies the base against the support 100, by its bearing surface 6, it is possible to support the fixing tool against the support 100, by exerting an axial force of thrust against the support 100, which unlocks the tool via of the security system, then one draws a buffer using the tool. The axis 21 of the buffer guide 30 and the axis 5 of the base being merged, the buffer comes sinking into the support 100, through the hole 3, and fixes the base to the support 100.

Support output

After fixing, the buffer guide 30 is released from the support by detaching it from the support 100. At the exit of support, one drives the attachment tool to the rear, in the axial direction (parallel to the axes 21 and 5) opposite to that firing, thus removing the end 23 of the buffer guide 30 out of the base. It will be emphasized that the withdrawal of the end 23 from the base is facilitated by the inclination of the anterior wall 25 of the groove 24.

Cable fixing

Finally, in known manner, inserting a portion of the cable to be fixed between the two parts 12, 12 'of the jaw of the base and in the openings 14, 14 ', and the cable is fixed to the base with a strap that is introduced into the receiving lights 13, 13 'and that we tighten around the cable.

In the description that has just been given, the base and the end of the buffer guide constitute respectively a female part and a male part, for the joining of one and the other.

In another embodiment, differing from that described previously, the base is a male piece and the end of the buffer guide a female part, for the joining of one and the other. The base comprises locking means of the buffer guide in translation parallel to its axis and the end of the buffer guide household means receiving the base having a lateral and axial passage slot of the base.

We could also consider joining the base and the end of the buffer guide by a curvilinear translation movement or by any other relative movement of the base and the end of the buffer guide, one for each relative to the other, in a plane perpendicular to the axis of the buffer guide.

Claims (8)

1. Process for fitting a base for fixing a piece to a support (100), using a fastener fixing tool provided with a fastener guide (30), in the course of which the base and the end (23) of the fastener guide (30) are fastened to each other, the base is applied against the support (100) and it is fixed thereto by means of a fastener, which process is characterised by the fact that the base and the end (23) of the fastener guide (30) are fastened to each other by a relative movement of the base and the end (23) of the fastener guide (30), one relative to the other, in a plane perpendicular to the axis (21) of the fastener guide (30).
2. Process according to claim 1, in which the relative movement of the base and of the end (23) of the fastener guide (30) is a movement of translation.
3. Process according to claim 2, in which the relative movement of the base and of the end (23) of the fastener guide (30) is a movement of rectilinear translation.
4. Process according to one of claims 1 to 3, in which the end (23) of the fastener guide (30) and the base are fastened to each other by clamping.
5. Tool for implementation of the process of claim 1, comprising a fastener guide arranged to be fastened to the fixing base, characterised by the fact that, the base forming a male piece for the fastening to the end of the fastener guide, the fastener guide provides a lateral and axial slot for passage of the base.
6. Tool for implementation of the process of claim 1, comprising a fastener guide (30) arranged to be fastened to the fixing base, characterised by the fact that, the base forming a female piece for the fastening to the end of the fastener guide, the fastener guide (30) is provided with means (24) for locking the base.
7. Tool according to claim 6, in which the means (24) for locking the base comprise an outer annular groove (24) for reception of a clamping jaw (11) of the base.
8. Tool according to claim 7, in which the outer annular groove (24) includes a wall inclined to the axis of the fastener guide (30).

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