DE2364515C2 - Luggage trolleys - Google Patents

Description

everyone paid attention to releasing the brakes is relieved and a try the luggage trolley Driving off with the brake engaged is impossible. The simple construction of the braking system In addition, it ensures that the brakes function safely, even in maintenance-free operation over the entire service life of the luggage trolley there.

The invention is in the following description of examples explained in detail using an exemplary embodiment shown in the drawing. In the Drawing shows the

F i g. 1 the upper part of the sash frame of a luggage trolley;

2 shows a partial section through FIG. 1 in the area of Leadership approaches;

F i g. 3 shows a steep section through FIG. 2;

F i g. 4 shows an end view of FIG. 2.

1 with the upright bars of the slide bar of a luggage trolley, not shown in detail, and 2 with brake rods 1 which are longitudinally displaceably arranged in the bars. Guide lugs 3 and 4 aligned in the direction of travel of the carriage are attached to the spars 1 on both sides. The guide lugs 3 and 4, like the bars 1, each have a slit-shaped diirchbrueh, which serves to receive and guide a correspondingly flattened end in each case one of the legs of a sliding bracket 5, which is U-shaped in plan view. The ends of the legs of the push handle 5 are pivotably connected to the brake rods 2 via a bolt 6 about a horizontal axis, which is loaded by a compression spring acting at its upper end in the sense of engaging the brake rods or the brake shoes attached to them against the wheel below are. As long as no pulling or pushing force is exerted on the luggage trolley via the handlebar, its brakes are applied or its wheels locked. The leg ends of the push handle 5 engaging in the guide lugs 3 and 4 are each assigned two tilting supports formed by cross bolts 7 and 8, the two tilting supports being arranged on both sides of a spar I. If a pushing force K is now exerted on the base of the U-shaped push bar 5, the push bar 5 pivots around the rear tilting support 8 The wheel is blocked. Conversely, if a tensile force K 'is exerted on the base of the U-shaped push handle 5, it pivots about the front tilting support 7, the push handle 5 lifting on the other side and also moving the push rod 2 upwards.

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1 sheet of drawings

Claims (1)

Claim: Luggage transport trolley, consisting of a base frame and a standing upright at one end, of two sash frames formed at their upper ends by a bars connected to each other in plan view, as well as a braking device for the wheels arranged below the sash frame, which by means of the can be actuated in guide lugs of the bars up or down pivotably mounted push handle and within the bars longitudinally displaceable and spring-loaded brake rods, wherein the push handle serves as an actuating element for the braking device and is coupled to the brake rods for this purpose. that when the push bar is swiveled, the brake rods are raised so that the wheels are released, characterized in that the push bar (5) in the guide lugs (3, 4) via tilting supports (7 and 8) is supported and bent downward in the area of its legs so far that the point of application K. K 'of a push or pull force is lower than the Kippaiflager (7 b / w. 8). The invention relates to a luggage transport trolley according to the preamble of claim 1, as it is made available to the public at train stations, airports and the like for the parking and transport of luggage and other goods. Such luggage trolleys usually consist of a base frame or a platform for storing the items of luggage to be transported h / .v .. goods, a push frame arranged upright at one end of the trolley and made up of two spars connected at their upper end by a push handle and a braking device which can be actuated by brake rods which are arranged longitudinally movably within the bars and which are assigned to the wheels located below the bars and which act on the brake shoes. In a known type of US-PS 30 61 049 one a base frame and one at one end arranged sash frame having luggage trolley is one part of the sash frame forming handlebars at a distance above the base frame on a transverse to the direction of travel Bearing shaft, which in turn by means of a cranking on a spring-loaded, thrust and tensile forces and with an actuating shaft mounted on the base frame of the carriage for the brake pads acting on the rear wheels of the car in (frictionally connected push rod works. The Fedcr-IaM assigned to the push rod is arranged in this way and on the luggage trolley supported that they an adjustment of the actuating shaft for the brake pads in the sense of an engagement the brake pads are effective as long as neither tensile nor shear forces act on the handlebar. on the other hand When tensile or compressive forces are applied to the Schicbcbügel, the push rod and thus the actuating shaft for the brake pads against the spring load so adjusted that the brake pads from the wheels be lifted off so that the luggage trolley can be moved freely, regardless of whether on the handlebar is pushed or pulled. A disadvantage of this known type of luggage trolley is especially the construction of the braking system. Which on the one hand requires a considerable technical effort and is in particular due to a The large number of storage locations required and, on the other hand, the operational safety of the luggage trolley cannot guarantee, as this is to be expected with such luggage trolleys. that si? not be serviced over their service life and therefore jamming or even sluggishness of bearings in the braking system, the intended automatic engagement of the rear wheels prevents acting brakes, which ultimately results in the risk that the loaded luggage trolley runs away automatically on even the slightest incline and creates a risk of accident. In the case of a luggage trolley, its sash frame by towering from the base frame and one at the upper ends of a transverse to the Axis running in the direction of travel is bathed in the pivotable push handle. is therefore already suggested been coupled with the handlebar on the one hand in the towering spars of the sash frame and on the other hand to arrange brake rods acting on the brake shoes assigned to the wheels and with one the automatic release of the brake shoes when the Schicbebügcl is unloaded and released to apply the spring load. Provided that it is in the interest of the most comfortable handling possible of the luggage trolley is provided. that the push bow! in its unencumbered normal position: is in an approximately horizontal position, the user of the car must release the brakes with the push bar swivel forward either up or down. In practice it has been shown that it some users in spite of clear indications refrain from swiveling the handlebar up or down at the same time when the car starts up and rather try to crunch the car at Brakes to move. The invention is therefore based on the object To develop luggage trolleys according to the preamble of claim 1 in such a way that its Handling is further facilitated and in particular an automatic release of the brakes is forced, as soon as a pulling or pushing force acts on the handlebar. According to the invention, this object is given by what is stated in the characterizing part of the patent claim Measures resolved. The fact that the Schubebügcl on the one hand into one another opposite tilting supports supported and on the other hand in the area of its legs as far as lines is bent that the point of application of a thrust or 6ü tensile force opposite the tilting supports is lower achieves that the dressing bar always has a certain Swivel movement around one of the two tilting support axes executes, regardless of whether a pulling or pushing force is exerted on him. On the other hand, there is a o5 Pivoting movement of the push handle forcibly Adjusting the brake rods and thus disengaging the brakes of the luggage trolley / ur consequence is the user of the luggage trolley from