CARRYING GRASP ATTACHMENT AT PLASTIC CONTAINERS
1. Field of the Invention The invention relates to a carrying handle mount on plastic containers, in particular, blow-molded plastic barrels, the mount comprising a mounting plate made of plastic material for securing a carrying handle on a securing plate that is attached to a container jacket or a container wall or is formed as a unitary part of the container jacket or the container wall. 2. Description of the Related Art European patent 0 413 836 B1 describes a carrying handle mount of this kind wherein the mounting plate of the carrying handle is designed to spread to a limited extent by means of a partitioning gap and is positively secured by means of an undercut that is formed on the outer edge at the underside of the mounting plate on the flange-like projecting outer edge of a mushroom-shaped projection formed on the container jacket. This type of carrying handle attachment entails the risk that, when during transport the container drops onto the carrying handle, the mounting plate with the carrying handle will become detached from the mushroom-like projection of the container wall upon impact on the ground or on a loading surface and will be damaged. It is an object of the present invention to further develop a carrying handle mount of the aforementioned kind for plastic containers with regard to an improvement of the transport safety of the container. In accordance with the present invention, this is achieved in that an overtightening protection device and an anti-rotation device are provided for the mounting plate of the carrying handle to be attached by screwing to the securing plate of the container. The overtightening protection device of the carrying handle mount on plastic containers according to the invention prevents the threads from being damaged when screwing the threaded socket, provided with an inner thread and formed on the mounting plate of the carrying handle, onto the threaded pin provided with an outer thread and formed on the securing plate of the container, and the anti-rotation device of the mounting plate of the carrying handle that can be connected by screwing to the securing plate provided on the container prevents that the carrying handle or handles when lifting the container become detached from the container. In the drawing: FIG. 1 is a side view of a plastic barrel with a carrying handle attached thereto; FIG. 2 is a front view of the carrying handle mount according to FIG. 1 in a perspective detail view; FIG. 3 is a side view of the carrying handle mount attached to the plastic barrel; FIG. 4 is an enlarged longitudinal section view of the carrying handle mount; and FIG. 5 is a perspective detail front view of the components of the carrying handle mount formed as unitary parts of the container without showing the mounting plate of the carrying handle. The two carrying handles 1 that are manufactured as injection-molded plastic parts for a plastic container 2, for example, a plastic barrel, are designed as drop handles and are connected by means of a hinge-like transition 3 (FIG. 3) forming a hinge on a mounting plate 4. On the mounting plate 4 of the carrying handles 1, a threaded socket 5 with an inner thread 6 is provided for screwing the mounting plate 4 in the direction of arrow a onto a threaded pin 8 provided with an outer thread 9 and formed as a unitary part of the securing plate 7 on the container 4. The threads 6, 9 are triple threaded arrangements, and the beginning of each thread of the triple threaded arrangement is displaced by 120°, respectively, relative to the other two threads of the triple threaded arrangement, respectively. The securing plate 7 is blow-molded onto the plastic container 2 that is manufactured by blow-molding. On a projection 10 of the container 2 a springy locking tongue 11 is formed that constitutes an anti-rotation device for the mounting plate 4. The mounting plate 4 of a carrying handle 2 connected by screwing to the securing plate 7 is prevented from becoming detached by rotating in the direction of arrow b in that the locking tongue 11 engages a recess 12 in the outer rim 13 of the round mounting plate 4 and rests against the stop edge 14 of the recess 12. On the securing plate 7 of the container 2, a second springy locking tongue 15 is formed as a unitary part. The second locking tongue 15 provides an overtightening protection device when screwing the threaded socket 5 of the mounting plate 4 of a carrying handle 1 onto the threaded pin 8 in that the locking tongue 15 of the securing plate 7 engages a second recess 12 on the outer rim 13 of the mounting plate 4 and rests against the stop edge 17 of the recess 16. The locking tongues 11, 15 that are formed on the projection 10 and the securing plate 7 of the container 2 as well as the recesses 12, 16, that are provided on the outer rim 13 of the mounting plate 4 of the carrying handle 1 for locking the locking tongues 11, 15, are arranged diagonally opposite one another. Two locking noses 18 are formed on the carrying handles 1; for locking the carrying handles 1 in the folded position 1 A stop comprised of two stop bars 20 for locking the carrying handles 1 in the folded-out carrying position 1 While specific embodiments of the invention have been shown and described in detail to illustrate the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles. The grip (1) has a round plastic base plate (4) mounted on a plastic holder plate (7) formed on/in the barrel body, and an overturning and twisting prevention device for the grip base plate. A threaded socket on the base plate is screwed to a threaded stud on the holder plate. A flexible locking tongue (11) on a shoulder (10) on the container acts as anti-twisting device locks into a recess (12) in the outer edge (13) of the base plate and engages on a stop edge (14). A second similar locking tongue (15) on the holder plate locks into a further recess (16) in the outer base plate edge and engages on a stop edge (17). Handle attachment on plastic material containers (2), in particular blow-moulded plastic material barrels, having a threaded connection piece (5) which is moulded onto a console plate (4) of the handle (1) and has an inner thread (6) for screwing the console plate (4) onto a threaded pin (8) with an outer thread (9) which is moulded onto a retaining plate (7) which is fitted or moulded onto the container (2), and also having an anti-rotation device against release of the handle (1) from the container (2), characterised by a snap-in pin (11) which is moulded onto the container (2) and has a resilient configuration, said snap-in pin catching into a recess (12) in the outer edge (13) of the round console plate (4) as anti-rotation device against release of the screwed-on console plate (4) of the handle (1) and coming to abut on a stop edge (14) of the recess (12), and also by a further snap-in pin (15) which is moulded onto the retaining plate (7) on the container (2) and has a resilient configuration, said further snap-in pin catching into a second recess (16) in the outer edge (13) of the console plate (4) as anti-thread-stripping device when screwing the threaded connection piece (5) of the console plate (14) of the handle (1) onto the threaded pin (8) of the retaining plate (7) and coming to abut on a stop edge (17) of the recess (16) . Handle attachment according to claim 1, characterised in that the snap-in pins (11, 15) which are moulded onto the shoulder (10) and onto the retaining plate (7) on the container (2) and also the recesses (12, 16) in the outer edge (13) of the console plate (4) of the handle (1) for catching the snap-in pins (11, 15) are disposed respectively diagonally opposite each other. Handle attachment according to claim 1 and 2, characterised in that the handle (1), which is configured as a drop handle, is articulated by means of a hinge-type transition (3) on the console plate (4). Handle attachment according to one of the claims 1 to 3, characterised by at least one snap-in nose (18) which is moulded onto the handle (1) and, for locking the handle (1) in the position (1a) pivoted against the container (2), can be caught in a snap-in recess (19) in the outer edge (13) of the console plate (4) of the handle (1). Handle attachment according to one of the claims 1 to 4, characterised by a stop which is moulded onto the console plate (4) of the handle (1) for locking of the pivoted-out carrier position (1b) of the handle (1). Handle attachment according to claim 5, characterised by two stop webs (20), which are moulded onto the console plate (4), for the handle (1). Handle attachment according to one of the claims 1 to 6, characterised in that the retaining plate (7) for screwing-on the console plate (4) of the handle (1) is blown onto the container (2). Handle attachment according to one of the claims 1 to 7, characterised by a three-start thread (6, 9) of the threaded connection piece (5) of the console plate (4) and of the threaded pin (8) of the retaining plate (7) with thread starts rotated respectively by 120°.BACKGROUND OF THE INVENTION
SUMMARY OF THE INVENTION
BRIEF DESCRIPTION OF THE DRAWING
DESCRIPTION OF THE PREFERRED EMBODIMENTS