FI91795C - Non-vertical rack element with fastening device - Google Patents

Abstract

The connecting device is designed as a locking claw (15) having an opening (16) for the load-bearing member. The said opening is open at the bottom. It is associated with a catch (21) mounted on the pin (22). The said catch has a supporting indentation (30) which enables it to support the locking claw, in the unlocked state, loosely on the load-bearing member (12) in order to simplify disassembly. <IMAGE>

Description

91795

Non-vertical rack element with fastening device.

- Icke-vertikal stallningselement med fåstanordning.

The invention relates to a rack element according to the preamble of claim 1.

Such fastening devices are described in DE-GM 71 28 051 (corresponding patent publication CH 542 973) and are called locking claws. In the most used embodiments, the latch is mounted somewhat above it in front of the support support opening. In this case, the trajectories of the support-abutment surfaces-terminal-point combination are set so that when the latch is turned upwards, the locking is immediately released. On the other hand, when turned back down, the abutment surfaces of the support support engage below the horizontal center line of the tube. Thus, lifting the rack element without moving the latch is prevented. Such latches can also be provided with a cam pointing away from the latch in order to move in the opening direction, so that it is not necessary to grip the head which is located immediately below the horizontal support. This avoids the risk of pinching the fingers. In the solutions according to U.S. Pat. No. 3,373,465 and DE Application Publication No. 2,535,205, the head of the latch is gripped to open the latch, which latch is designed to facilitate gripping only.

In the above-mentioned publications, the return spring is implemented as a compression spring. However, practical embodiments of such fastening devices generally comprise a torsion spring wound around the articulated bolt, the force of which is dimensioned in such a way that, on the other hand, it promotes well the self-contained • ·. *! weight loss and, on the other hand, forms a restoring force which prevents unintentional opening, but which is not too onerous for the operating staff during installation.

Such fastening devices are used in particular in connection with scaffolding pallets which are suspended between two support supports.

When the scaffold blades are installed, the restoring force acting on the latch 2 91795 is of no greater significance, because the sole installer first places the scaffold on one end of the support or can already lock it in a locking manner and then turn the other end down and allow the latch spring to return.

However, when it is desired to disassemble the scaffold platform, there are significant difficulties with the fastening devices in use, so that disassembly has so far only been possible with two people. Namely, if one end of the rack platform is raised and the latches are moved out of the lock and base station and an attempt is made to support the platform with the detached latch edge so that the other end of the rack platform at least two meters away can be lifted. and the latches fall back into the locked position. Thus, unloading by one man is not possible at this time.

This is now a part of the invention, and it is intended to implement the fastening device in such a way that it allows one person to disassemble the rack element by light handling and then also allows the detached rack element to be supported at least at one end on a horizontal support.

According to the invention it is arranged thus and according to the invention. the rack element is characterized in that the outer, lower end of the latch is provided below its support-abutment surface with a support recess adapted to the radius of the support bracket or the shape of the profile, and that the return force due to the return spring force acting at the latch end is so that it supports the rack element .. without locking it.

GB patent publication 2 189 287 discloses a solution which allows the rack to be dismantled by one person. In this known solution, in addition to the spring for turning the latch, there is an additional retaining spring. It prevents the latch from moving automatically to those positions where it is required for installation and disassembly, thus making it difficult to use.

In the solution according to the invention, a support recess arranged in addition to the latch allows that the head of the respective rack element raised by one person performing disassembly can be placed on the horizontal support support loosely, but still in a defined manner, after returning the latch. By adapting the spring force to the weight of the respective rack element, it is ensured that the latch does not inadvertently recoil, whereby the opening of the support support would again engage the horizontal support support and the latch would return to the locking position. Once the other end is securely supported in the raised position, the person performing the disassembly can go to the other end of the relatively distant scaffold element and remove the latch there and lift the scaffold element, and then - when it is now completely detached - take it away and take it to storage. Thanks to the toothingly simple additional operation performed on the latch, which is possible without a considerable manufacturing cost only by a suitable design of the latch head, a considerable improvement in disassembly is achieved. In this case, it is expedient that a strongly oblique parting surface is arranged between the end face of the support support and the support recess so that the latch head has sufficient .. strength and on the other hand to place it, press the corresponding button on the rack element. In order to avoid excessive wear on the supports and nails as a result of such frequent events, such latches have long been made of a flat plate section with a profiled injection-molded plastic baling, in contrast to the type treated in the above-mentioned publications. With this injection-molded plastic baling, the surface formation can be simply changed and a width suitable for the abutment and support surfaces can be formed without excessive manufacturing costs.

4,91795

An embodiment of the invention will now be described with reference to the drawing.

The drawing contains:

Figure 1 is a schematic section of a rack assembly on which a rack platform is suspended;

Figure 2 is a side view of a separate fastening device attached, the components hidden inside the body also shown;

Fig. 3 A representation corresponding to Fig. 2, in which hidden internal components are not shown;

Figure 4 A view similar to Figure 3, in the detached and supported position.

The rack 10 has columns or frames 11 provided with horizontal supports 12. The oblique support 13 is shown in part.

Each end of the scaffold pallet 14 has two fixing claws 15, the support support openings 16 of which are open downwards, and which are placed on the support support 12, as usual. The support supports 12 are formed into cylindrical tubes, in particular of light metal. They can also be profile elements and can be of any shape, including steel.

The scaffold platform 14 can be of any ordinary type, e.g. a frame structure with a plate on top, a completely steel plate, or a structure made of several materials. The scaffold pallet 14 has fastening ends 17 to which the frames 18 of the fastening nails 15 are fastened. The frames 18 are etched as bent and profiled stamping and bending plate parts, preferably of steel, and provided with a rust protection coating, for example galvanized. The outer, lower end is provided with a rounded cam 19. The center point 5 91795, i.e. the center line of the support support 12 and the support support opening 16, is marked with the number 20.

The latch 21 is pivotally mounted in a conventional manner on a bearing pin 22 inside the body 18 which pierces the body 18. The xannat bolt 22 is arranged relative to the rack platform 14 in front of and slightly above the opening 16 of the support. In particular, the latch 21 has the shape shown in Fig. 2 with a plurality of reinforcement ribs 23 projecting from the central flat part. They are preferably formed by an injection molding method from plastic to a visible shape, in which case a flat plate part corresponding to the shape is molded in the middle plane. It can also be another material, for example a suitable metal casting or steel bar. The latch 21 has a stop head 24 which extends past the bearing of the support bolt 22 and rests on the inner front wall so that the latch 21 extends only slightly into the support support opening 16 when there is no support. Thus, the latch 21 can be opened automatically by pressing it down. The return spring 26 is formed as a torsion spring in a visible manner, as with any latches of this type known to date, but in a manner according to the invention the force of the spring 26 is now dimensioned in a defined manner, as will be explained in more detail below.

The lower end 27 of the latch 21 has a support surface 28 on the inside of the support. It has a radius Senna as on the support 12 and is located below the horizontal central plane 29 of the support 12, i.e. the opening 16 of the support. As can be seen, it locks in the fastening position in the conventional way. The latch 21 opens by pushing it up against the force of the return spring 26. To facilitate pressing, a cam 31 is provided, which can be: *! stick.

For a considerable distance below the abutment abutment surface 28, a abutment recess 30 is formed as part of the cylinder surface over the entire width of the latch, with edge branches 34 formed on both sides of the latch center wall. until, on the one hand, to bring the support recess into a suitable position and, on the other hand, to provide a gap between it and the rounded cam 19 which approximately corresponds to the support support 12, so that the locking claw 15 can also be pressed into the locking position with corresponding force and support.

As shown in Fig. 4, the entire scaffold platform can now be freely supported at one end on the support support 12, because the support recesses 30 extending backwards from the vertical center plane backwards towards the scaffold platform 14 rest loosely on the top, but still . Now the same person at the other end of the rack can carry out the removal and then the rack can be lifted off. The butter of the return spring 26 is then dimensioned in such a way that, taking into account the lever ratios shown in the drawings, the support force acting on the support recess 30 is sufficient to support the respective weight of the rack platform 14 or some other rack element. On the other hand, however, it is dimensioned so that the latch 21 can be manually turned back.

Arranged on both ends 17 of the scaffold platform 14 are two such locking claws spaced on either side at a distance of about 33, 50, 60 or 70 cm. In principle, it is sufficient that only one end is provided with latches 21 in the shape shown here, since only the other end has to be supported. However, similar latches can also be arranged at one end so that removal and support can take place at both ends. The latches can also be commonly used with other rack elements, such as oblique, horizontal or even lateral connections, if this makes sense. Manufacturing costs are low, no new components are required, but a high processing advantage is nevertheless achieved.

Claims (2)

91795 A non-vertical rack element with a fastening device, in particular a rack platform (14), a horizontal support or a diagonal support, the fastening device having at least one claw arranged over the head, gripping over the horizontal support support (12) and an open support support opening ( 16) as well as a spring-loaded latch (21) mounted on the nail body (18), pivoting, preventing unintentional removal, in its locking state below the horizontal median plane of the support (12) by the latch head (27), characterized in that the outer latch (21) , the lower head (27) is provided below its support support abutment surface (28) with a support recess (30) adapted to the rain of the support support (12) or the shape of the profile, and that the return force due to the return spring (26) acting on the latch head (27) is according to the weight of the element (14) so that it supports the rack element (14) without locking it. A non-vertical rack element with a fastening device according to claim 1, characterized in that the support recess (30) is located below the end of the support support abutment surface (28) and that a steep partition surface (33) delimiting the setting crystal is arranged between them. »+ · 8 91795