WO2010001286A1

WO2010001286A1 - A loader for nails strips and for a fixing device

Info

Publication number: WO2010001286A1
Application number: PCT/IB2009/052620
Authority: WO
Inventors: Patrick Herelier; Frédéric Nayrac
Original assignee: Société de Prospection et d'Inventions techniques SPIT
Priority date: 2008-06-30
Filing date: 2009-06-18
Publication date: 2010-01-07
Also published as: EP2328722A1; CA2728615A1; AU2009265227B2; DK2328722T3; EP2328722B1; AU2009265227A1; FR2933018B1; CA2728615C; FR2933018A1; NZ590083A; PL2328722T3

Abstract

The present invention relates to a loader for nails strip, comprising an end (7) for introducing the nails strip, an outlet end (8) for the strip arranged so as to be mounted on the nose of a fixing device, means (10) for guiding nails from the introducing end (7) at the outlet end (8) and means for pushing the strip towards the outlet end (8), the guiding means comprising abutting means (10) for nails extending up to the outlet end (8). The loader is characterized in that the abutting means (10) have a rocking breach (11) for short nails (25) with a lower width than the abutting means (10).

Description

Title of Invention: A LOADER FOR NAILS STRIPS AND FOR A

FIXING DEVICE

[1] The field of this invention relates to fixing parts to supporting materials through fixing or bedding tools or devices, referred to as nailing devices. These could be nailing devices with propelling loads, with gas cartridge, or even pneumatic nailing devices.

[2] A fixing device comprises, at the front of a main body, a nose to which there can be connected a loader in a part referred to as shearing block, nails being driven one by one from the loader in the nose of the device through a crossing window opening into a central bore of the nose, wherein there is mounted, slidably, a piston stem for propelling the nail.

[3] The subject nailing devices and loaders use nails in a strip, arranged side by side one to another and thereby maintained by various possible means and more specifically by adhesive tapes extending obliquely relative to the nail stems.

[4] When a nail has been introduced into the nose of the device just after a shot, and after the impact of the piston stem on the nail head and the start of driving thereof in the nose towards the supporting material, the strip(s) maintaining the nails is or are sheared and the nail being positioned in the nose is thus separated from the remainder of the nails strip. This occurs in the shearing block.

[5] A large number of fixing devices are provided for receiving long nails and short nails, this means that their crossing window opening into the nose bore is sized so as to receive long nails, thus, from loaders able to receive both long and short nails. This arises guiding problems for short nails when these are used, but this is not the object of the present application.

[6] The problem arising here, in a nail loader able to receive both long nails and short nails, is that driving short nails in the loader is prevented. The reasons for preventing short nails from being driven in a loader, and therefore, for preventing them from crossing in the nose of a fixing device, can be numerous and they are all good.

[7] A loader for nails strips essentially comprises, between two half-shells or flanges, a nails strip introducing end, a strip outlet end arranged so as to be mounted on the nose of a fixing device and so as to form with the latter a shearing block, means for guiding nails from the introducing end to the outlet end and means for pushing the strip towards the outlet end.

[8] Generally, there is provided a guiding rail for nail heads and an abutment area for nail stems extending up to the strip outlet end, the abutting area having a sufficient width for acting as an abutment for long nails.

[9] For ensuring that short nails are prevented from being driven, the invention thus relates to a loader for nails strips, comprising a nails strip introducing end, a strip outlet end arranged so as to be mounted on the nose of a fixing device, means for guiding nails from the introducing end at the outlet end and means for pushing the strip towards the outlet end, the guiding means comprising abutting means for the nails extending up to the outlet end, characterized in that the abutting means have a rocking breach for short nails with a smaller width than the abutting means.

[lϋ] Thus, nails with a length higher than the width of the rocking breach of abutting means could be guided along the guiding and abutting means from the introducing end up to the outlet end of the loader and be introduced into the nose of the device. These will be long nails. For short nails, i.e. having a length lower than the width of the breach, a short nails strip rocks into the breach for leaving the plane of the guiding and abutting means and being no longer able to be pushed and, in any event, being no longer able to cross through the outlet end of the loader.

[11] Preferably, the guiding and abutting means are drilled with a window forming the rocking breach with a rear edge and a front edge forming an abutment for short nails.

[12] The invention will be better understood reading the following description of the preferred embodiment of the loader of the invention, referring to the appended drawings, in which:

[13] Fig. 1 is an exploded perspective view of both flanges of the loader;

[14] Fig. 2 is a perspective view of the flange of the loader comprising means for guiding and abutting long nails, with a long nails strip;

[15] Fig. 3 is a perspective view of the flange in Fig. 2, but with a short nails strip being rocked into the breach of the guiding and abutting means; and

[16] Fig. 4 is a cross-sectional view of the loader with a long nail abutting and a short nail being rocked.

[17] The loader that will be now described, that could also be referred to as a magazine, comprises two half-shelves or flanges 1, 2 joined in the lower part, by a nipping and maintaining spout 3 and in the upper part, by a rib 4 of one 1 of both flanges and ears 5, 6 extend both flanges 1, 2 provided for receiving screw type fixing elements.

[18] As used herein, lower and upper parts mean close parts of the loader, when containing a nails strip, nail tips and heads, respectively.

[19] The loader is therefore adapted for receiving nails strips being introduced through an inlet end 7 and leaving through an outlet end 8. In the upper part, next to the fixing rib 4 of the flange 1, a rail 9 for guiding the nail heads extends.

[20] The outlet end 8 of the loader has the form of a window, arranged in the flange 1, and opening into the central bore of the device nose, onto which the loader is mounted and wherein the piston stem extends for propelling the nails to be driven into a supporting material.

[21] Extending from the guiding rail 9 up to the nipping spout 3 and from the inlet opening 7 up to the outlet window 8, a cheek lϋ acts as a means for guiding the stems of long nails. Such a cheek lϋ has, to this end, a planar surface also used as an abutment for those stems.

[22] The cheek lϋ is drilled with a window 11, with a generally rectangular shape, thus having four edges, an upper 12, a lower 13, a rear 14 and a front 15 one. Thus, the cheek lϋ has the shape of a rectangular frame with two posts 16, 17 and two struts 18, 19 between which there is arranged a rocking breach for short nails as will be now described.

[23] The length of the stems 21 of long nails 20 (Fig. 2) is larger than the width of the guiding and abutting frame 10, i.e. the sum of the widths of both struts 18, 19 and of the window 11, the width of such a window being equal to the length of the edges 14, 15. Under such circumstances, when a strip 22 of long nails 20 is being introduced into the loader, the stems 21 thereof could abut against such struts 18, 19, their tips 23 extending in the nipping spout 3. Long nails 20 can be guided up to the outlet 8 of the loader. If a strip 24 of short nails 25 is being introduced, the length of the stems 26 thereof being shorter than the sum of the widths of the upper strut 18 and of the window 11 of the abutting frame, the nails 25, with their heads located in the guiding rail 9, rock around their head in the window 11, performing its rocking breach function.

[24] Short nails 25, while rocking in the breach 11 thus leave the plane of the guiding frame 10 and the strip 24 now abuts against the front edge 15. Short nails cannot cross through the outlet window 8, the nails strip 24 can no longer be pushed by the pushing handle being disclosed herein after.

Claims

[Claim 1] A loader for nails strip, comprising an end (7 ) for introducing the nails strip, an outlet end (8 ) for the strip arranged so as to be mounted on a nose of a fixing device, means ( lϋ) for guiding nails from the introducing end (7 ) to the outlet end (8 ) and means for pushing the strip to the outlet end (8 ), guiding means comprising abutting means ( lϋ) for nails extending up to the outlet end (8 ), characterized in that the abutting means ( lϋ) have a breach ( 1 1 ) for rocking short nails (25 ) having a width lower than the abutting means ( lϋ).

[Claim 2] A loader according to claim 1, wherein the guiding and abutting means

( lϋ) are drilled with a window ( 1 1 ) forming the rocking breach with a rear edge ( 14) and a front edge ( 15 ) forming an abutment for short nails (25 ).