DE3043495C2 - Post for a height-adjustable volleyball net - Google Patents

Description

The invention of the main patent DE-PS 29 17 354 relates to a post for a height adjustable volleyball net with a support post and with a height adjustable on the sland post and fixable carrier, in its upper area a deflection roller and in its lower area one Tensioning device is attached, the upper tensioning rope of the volleyball net over the pulley to Jig is guided.

The invention of this main patent is that the solution to the problem of possible injury to avoid the player and to achieve a large tensioning path for the network, essentially realized is characterized by the following features:

The tensioning device is on the side facing the volleyball net, which is designed as a sliding post Carrier arranged;

the clamping device consists of an inner tube sliding telescopically in an outer tube, the can be adjusted with respect to the outer tube by a spindle drive;

the inner tube is with the end of the upper tension cable Tied together.

The tensioning cable grips off-center to the axis

45

50

55

60

65 of the inner tube at its lower end, so that when the upper tensioning cable is tensioned, considerable transverse forces act on the telescopically nested tubes (outer and inner tube). The resulting frictional resistance must also be overcome when tensioning the upper tensioning cable and can cause signs of wear.

The invention is based on the object of a post of the type mentioned at the outset, the actual To improve tensioning device in such a way that the exercised by the upper tensioning cable when it is tensioned Forces can be absorbed by the clamping device without friction and tilting.

This object on which the invention is based is achieved according to the invention in that the inner piece on its upper side has a central connection for the upper tensioning cable of the volleyball net and on its lower side is in connection with the spindle of the spindle drive

This measure makes a simpler, tubular Body created by moving up and down an inner piece is mounted that establishes the connection between the spindle and the tensioning cable Adjustments of the actual sliding post relative to the support post, the clamping device can be actuated.

Further advantageous refinements of the device according to the invention are set out in the subclaims explained

An exemplary embodiment of the invention is described below with reference to the drawing.

1 with a volleyball net denotes that of an upper tensioning cable 2 and a lower tensioning cable 3 corresponding post is held.

The actual post consists of a post 4, which is in a corresponding ground socket in the ground the hall or the sports field can be used and at its upper end a sliding post 5 wearing. Both posts consist of profile elements that are not round in cross-section. The lower Tensioning cable 3 is known per se on the support post 4 or at the lower end of the sliding post 5 Way set.

The actual sliding post 5 is closed at its upper end by a Abschlusspldtte 8, the a freely rotatable pulley 9 carries.

At the lower end of the sliding post 5, on the side facing away from the sliding post 1, there is a base plate 24 attached, for example welded, this base plate 24 carries a polygonal outer tube 18 In this polygonal outer tube 18 is an inner piece 19 is arranged movable up and down, which consists of can consist of a solid but slippery plastic. At the upper end of the inner piece 19 is a central connection is provided, which is designed as a hook, this hook in an eyelet at the end of the tension cable 2 engages.

Together with a spindle drive 20, the device described above forms the actual clamping device 17. The spindle drive 20 is formed by a spindle 23 which is attached to the lower end of the inner piece 19 is arranged and for example here by the in the Drawing recognizable grub screw 25 is set. In a housing 26, the drive of the Spindle 23 serving and via the hand crank 27, for example with the interposition of a corresponding Gear arranged nut be provided. Such spindle drives are diverse

Form known and used here, without this forming the subject of the invention and must be explained in more detail here.

At 7, the actuating device can be seen with which the slide post 5 on the support post 4 in his Altitude can be set.

The mode of operation of the device according to the invention is evident from the drawing. By Operating the hand crank 27 and thus more or less turning the spindle 23 up and down is also possible the inner piece 19 within the outer tube 18

and moved away, so that with a corresponding downward movement of the inner piece 19, the tensioning cable 2 is tensioned.

It is advantageous that the actual connection 21 in the tensioned state of the rope inside the outer tube 18, so injuries are excluded here, while the eyelet provided on the tensioning cable 2 is simply hooked into the hook of the connection 21 is possible when the spindle 23 and thus the inner piece 19 are guided into the upper end position.

1 sheet of drawings

Claims (5)

Patent claims: 1. Post for a height-adjustable Volleyball net with one post and one on the post that is adjustable in height and fixable arranged sliding post, in the upper area a pulley and in its lower area on the side facing away from the volleyball net a clamping device for the Volleyball net is attached, with the upper tension rope of the volleyball net over the pulley is guided to the clamping device, which consists of a sliding in an outer tube, by a spindle drive adjustable with respect to the outer tube and connected to the end of the upper tensioning cable Inner piece consists according to patent 29 17 354, characterized in that the inner piece (19) on its upper side a central connection (21) for the upper tensioning cable of the volleyball net (1) and on its lower side with the spindle) (23) of the spindle drive (20) in connection stands 2. Post according to claim I, characterized in that the outer tube (18) of the clamping device (17) and the spindle drive (20) are arranged on a common base plate (24) which is attached to the Gieitpfosten (5) can be fastened 3. Post according to claim 1, characterized in that the outer tube (18) of the clamping device (17) and the inner piece (19) are polygonal. 4. Post venigstens according to claim 1, characterized in that the outer tube (18) has such a Has length that in the tensioned position of the volleyball net (1) the connection (21) is within of the outer tube (18) is located. 5. Post at least according to claim 1, characterized in that the inner piece (19) by a a high-slip plastic is formed. "O