Fastening clamp for connecting wooden parts

Abstract

A mounting clamp for joining wooden parts to one another and to the foundation is used particularly for joining boards of outdoor balcony and deck covers. A rectangular, preferably square bottom plate is provided, and two vertical webs which are stamped out of the bottom plate in opposite directions in a U-shaped manner and are vertically bent are provided at a short distance next to each other in the center of the bottom plate relative to the width thereof. Each web supports a vertically projecting nail in the center, the nails extending in opposite directions.

1 . A fastening clamp for connecting wooden parts to one another and to the foundation, in particular planks of balcony and terrace covers in the outdoors, having
 a vertical web,   at least one tongue-shaped or beak-shaped nail, which protrudes perpendicularly from the web and is worked out therefrom,   soles, which protrude perpendicularly on the bottom of the web, having at least one hole for fastening via screws, wherein   a rectangular, preferably square soleplate ( 1 ) is provided,   two vertical webs ( 2 ,  3 ) are provided at a slight distance adjacent to one another on the soleplate ( 1 ), centrally to the transverse extension thereof, which are punched out in opposite directions in U-shapes from the soleplate and are bent up vertically,   each web ( 2 ,  3 ) centrally bearing a perpendicularly protruding nail ( 16 ,  17 ), each in opposing orientation.   
   
   
       2 . The fastening clamp according to  claim 1 , wherein the particular nail ( 16 ,  17 ) is punched out of the sole and web material and is bent down perpendicularly in the same bending direction as the web ( 2 ,  3 ) and points in the same direction as the web punch opening ( 20 ). 
   
   
       3 . The fastening clamp according to  claim 1 , wherein the webs ( 2 ,  3 ) each have opposing U-profiles ( 4 ,  5 ) to one another having open, relatively short profile legs ( 7 ,  8 ), the leg ends ( 9 ,  10 ) of one web being located in the same longitudinal extension as the linear U-profile base of the particular other web. 
   
   
       4 . The fastening clamp according to  claim 3 , wherein the particular profile provided symmetrically to the web center is provided running away from the web rear side as a recess ( 22 ) in the soleplate ( 1 ). 
   
   
       5 . The fastening clamp according to  claim 4 , wherein the hole ( 23 ) is situated in the recess ( 22 ), and thus in the opposite central extension to the web nail ( 16 ,  17 ). 
   
   
       6 . The fastening clamp according to  claim 4 , wherein an angularly directed embossing ( 31 ), which is at least semicircular, preferably at least in the form of a three-quarter circle, is provided at least in the size of the contact area of the screwheads in the recess ( 22 ), on the side pointing toward the vertical web ( 2 ,  3 ), concentrically to the hole ( 23 ), the axis ( 32 ) of the hole ( 23 ) being situated pointing away from the vertical web ( 2 ,  3 ) at an angle α of 5-30°, preferably 10-20°. 
   
   
       7 . The fastening clamp according  claim 3 , wherein the profile of the webs ( 2 ,  3 ) and soleplate is designed as center point symmetrical so that the particular profile base outer surface ( 6 ) of one web is located aligned in the longitudinal direction, i.e., at equal transverse spacing from the longitudinal center line of the clamp, as the axially-parallel U-leg extensions ( 9 ,  10 ) of the other web, so that in each case a plank support is provided on both web sides, and in each case on two leg extensions and one profile base. 
   
   
       8 . The fastening clamp according to  claim 7 , wherein the depth of the U-profile ( 4 ,  5 ) of the webs ( 2 ,  3 ) can be designed corresponding to the gap and/or spacing ( 15 ) to be provided between the planks ( 13  and  14 ) and from the planks ( 13 ,  14 ) to the support wood ( 24 ), e.g., at 5 mm spacing. 
   
   
       9 . The fastening clamp according to  claim 1 , wherein the two soleplate longitudinal edges ( 11 ,  12 ) parallel to the web longitudinal extension are bent downward (angled) so that they are drawn at least 0.2 to 2.0 mm, preferably 0.5 mm lower than the base bottom sides ( 25 ) of the profile recess ( 22 ), and form claw edges ( 26 ) which are longitudinally parallel to one another. 
   
   
       10 . The fastening clamp according to  claim 1 , wherein the nails ( 16 ,  17 ) situated close to the particular web top side have a nail length which is greater than the spacing of the nail root from the soleplate, so that the corresponding (nail) V-cutout ( 18 ) extends up into the sole recess ( 22 ) in the direction toward the screw through hole ( 23 ). 
   
   
       11 . The fastening clamp according to  claim 10 , wherein the nails ( 16 ,  17 ) have a comb-shaped rib ( 27 ) or a notch-shaped groove ( 34 ) on their top side in central longitudinal extension and have a groove ( 35 ) on their bottom side. 
   
   
       12 . A method for producing the fastening clamps according to  claim 1 , wherein
 V-cutouts ( 18 ), which are offset to one another in the longitudinal direction and transverse direction and point in opposite directions to one another, are introduced into a rectangular, preferably square soleplate metal plate and these cutouts are formed like beaks as tongues/nails ( 16 ,  17 ) pressed downward essentially perpendicularly (90°) to the plate ( 1 ),   a U-shaped notch ( 21 ) is introduced in opposing directions around the nails and/or the notches ( 18 ) and bent up perpendicularly in the same clock direction as the nails ( 16 ,  17 ), so that the nails ( 16 ,  17 ) are subsequently each located horizontally and thus parallel above the web punch opening ( 20 ).   
   
   
       13 . The method according to  claim 12 , wherein, in the sheet metal forming the soleplate ( 1 ), firstly U-profiles, which are oriented and/or implemented opposite in the transverse direction and are situated adjacent to one another, are introduced as the recess ( 22 ) depressed downward, after which the beak-shaped nails ( 16 ,  17 ) are formed in the base of the profile by punching and bending and then the U-cutouts ( 21 ) are introduced at least slightly outside and parallel to the profile and the profile webs ( 2 ,  3 ) thus incised are bent out by 90°.