NAIL FOR USE IN NAIL SETTING TOOL

Abstract

A nail for a nail setting tool comprises a predominantly lignocellulosic material. The nail has a nail shank, at the front end of which is provided a nail tip in the form of a conical round tip. At the rear end region is a head region. The tip angle of the nail tip is > 40°.

Claims

1. Nail, in particular for use in a nail setting tool, which consists of a predominantly lignocellulosic material and has a nail shank (1a), at the front end of which is provided a nail tip (16) in the form of a conical round tip, and at the rear end region of which is formed a head region (1c), wherein the tip angle of the nail tip is > 40°.

2. Nail according to claim 1, wherein the tip angle of the nail tip (1b) is in the range of 45° and 60° and preferably 45° or 60°.

3. Nail according to claim 1, wherein the nail shank (1a) is cut off at an angle of 90° to the shank axis at its head region (1c) opposite the nail tip (1b).

4. Nail according to claim 3, wherein the head region (1c) is thickened with respect to the nail shank (1a) and expands continuously, in particular towards the free end of the nail (1).

5. Nail according to claim 3, wherein at least one recess (2) extending in the axial direction of the nail shank (1a) is provided in the upper end face of the head region (1c), which recess is designed such that a wedge (3) can be driven axially into it in order to press outwards the material webs of the head region (1c) present adjacent to the recess.

6. Nail according to claim 5, wherein the at least one recess (2) is designed to be slot-shaped and passes through the head region (1c) from an edge region to an opposite edge region thereof, in particular a single slot-shaped recess (2) being provided which passes through the head region (1c) centrally and intersects the longitudinal axis of the nail shank.

7. Nail according to claim 5, wherein the recess (2) extends from the upper end face of the head region (1c) of the nail over an axial length of at least 3 mm, in particular at least 4 mm and preferably at least 5 mm into the head region (1c).

8. Nail according to claim 1, wherein in the outer peripheral surface of the nail shank (1a) several longitudinal grooves (4) extending parallel to one another in the longitudinal direction of the nail shank (1a), preferably parallel to the longitudinal axis of the nail shank are formed.

9. Nail according to claim 8, wherein the longitudinal grooves (4) extend over the entire length of the nail shank (1a) and/or are formed in the form of notches of approximately triangular cross-section.

10. Nail according to claim 8, wherein the longitudinal grooves (4) are distributed evenly along the periphery of the nail shank (1a).

11. Nail according to claim 1, wherein the nail is made of wood and/or a wood material, in particular an organically bound wood material, preferably a synthetic resin-bonded laminated wood or a synthetic resin-bonded fibre composite material which contains lignosecellulosic fibres from annual plants.

12. Nail according to claim 11, wherein the organically bonded wood material contains phenolic resin as a synthetic resin.

13. Nail according to claim 11, wherein the organically bonded wood material contains synthetic resin in an amount of at least 30% by weight, in particular at least 35% by weight, the amount of synthetic resin being preferably 40% by weight.

14. Nail according to claim 1, wherein it consists of a material with a density > 0.65 g/cm.sup.3, in particular a density > 0.85 g/cm.sup.3 and preferably a density > 1.0 g/cm.sup.3, the density in particular being 1.3 g/cm.sup.3.

15. Nail according to claim 1, wherein the nail shank (1a) has a round, oval or polygonal cross-section.

16. Nail according to claim 15, wherein the diameter or the smallest shaft thickness is 2 mm to 6 mm, in particular 3 mm to 6 mm and preferably 4 mm to 5 mm.

17. Nail strip comprising a plurality of nails according to claim 1 inserted into corresponding openings of a punched tape.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] With regard to further advantageous embodiments of the invention, reference is made to the subclaims and the following description of an embodiment with reference to the enclosed drawing. In the drawing shows:

[0028] FIG. 1 the front end area of nails with different nail tips in front view,

[0029] FIG. 2a an embodiment of an inventive nail with a slit-shaped recess provided at the head area,

[0030] FIG. 2b the nail from FIG. 2a with a wedge driven into the slot-shaped recess,

[0031] FIG. 3 a possible cross-section of the nail shank of a nail according to the invention, and

[0032] FIG. 4 an alternative embodiment of a cross-section of the nail shank.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)

[0033] FIGS. 2a and 2b schematically show a nail 1 according to this invention. The nail consists mainly of a lignocellulosic material. In the present case it consists of a synthetic resin-bonded laminated wood which contains 35 % by weight phenolic resin as synthetic resin and thus has a density of more than 1 g/cm.sup.3, specifically just under 1.3 g/cm.sup.3.

[0034] The nail 1 has a nail shank 1a, at the lower end of which a nail tip 1b is formed with a circular cross-section, i.e. a conical round tip. The nail tip 1b has an axial length which is approximately as large as the diameter of the nail shank 1a, so that the tip angle of the nail tip 1b is 60°.

[0035] As shown in FIG. 1d, the tip angle can also be 90°, for example. It is essential that it is larger than 40° so that the splitting effect on nailed components is smaller than with nails whose tip angle is smaller, for example at 20°, as shown in FIG. 1a.

[0036] The upper end region of the nail shank 1a is cut off perpendicular to the longitudinal axis of the nail. Thus the nail 1 has a head region 1c, which has the same cross-section as the nail shank 1a. As can be seen in the drawing, the head region 1c is further provided with a slot-shaped recess 2 which extends axially from the upper end face of nail 1 over a length of several millimeters into the head region 1c or the nail shank 1a along a longitudinal central plane of the nail 1 and penetrates the head region 1c or the nail shank 1a from one edge region thereof to the opposite edge region thereof. A wedge 3 can be driven into the recess 2 after or before the nail 1 is driven into a component or a substrate, so that the webs of material limiting the recess 2 are pressed apart and the head region 1c widens as indicated in FIG. 2b. The expansion increases the pressing forces between the head area 1c and the component into which the nail 1 with the head area 1c is/is driven, and as a result the pull-through resistance of nail 1 is increased.

[0037] The nail shank 1a and the head area 1c can have a smooth surface. However, the circumferential surface of the nail 1 in the region of the nail shank 1a and the nail head 1c is ribbed in a preferred manner. In other words, the nail shank 1a or nail head 1c is provided with longitudinal grooves 4 which extend over the entire length of the nail shank 1a/ of the nail head 1c and are formed here in the form of notches with a triangular cross-section, so that wall sections with trapezoidal (see FIG. 3) or triangular (see FIG. 4) cross-section are formed.