DE8128013U1 - ROLLABLE FOLDABLE BASE - Google Patents

Description

The invention relates to a mobile, collapsible undercarriage which, in the unfolded position, can be used in various ways can be used. The aim of the invention is a mobile collapsible undercarriage in the unfolded position supports a loose travel cradle and as such can be used as a stroller. Furthermore, the invention contemplates an underframe, which in the unfolded Position supports a loose retrieval basket and can be used as such as a retrieval trolley · Finally, the invention aims an underframe that in the unfolded position

Child chairs supported and as such as a sports stroller can be used, with the child's chair in relation to the direction of movement of the base either forward or backward.

In order to realize the above-mentioned possibilities, a mobile collapsible one is therefore according to the invention Proposed underframe, which is characterized in that the underframe has two at its upper end has push rods provided with a handle and two legs pointing forwards and downwards in the pushing direction, which have an impeller at the lower end and which at some distance from their upper end with the lower ends of the push rods are articulated, with the legs at a short distance below the articulation with the push rods are mutually connected by a cross-connecting rod, two rearward and downward in the thrust direction Legs that have an impeller at the lower end and which are at some distance from the lower ends of the push rods the push rods are articulated, while these hind legs are some distance above their lower ends are mutually connected by a cross-connecting rod, one at a distance above the connecting rod of the Fixed right-angled legs in the pushing direction of the rear legs Recovering basket, which is articulated on its long sides with the front and rear legs, whereby its points of articulation lie in a plane below the points of articulation of the push rods and the front legs, a right-angled one Support frame, which is articulated with its long sides to the push rods, the hinge points over the hinge points of the push rods and the rear legs, and a U-shaped support frame attached to the the free ends of his.legs with the long sides of the Support frame is articulated, the transverse

connecting leg of the legs of the U-shaped support frame carries clamping members.

Furthermore, the present underframe is characterized in that by the support frame in the unfolded Position of the underframe and a loose travel cradle when used as a stroller or as a recovery cart or a loose retrieval basket is supported and fixed in its horizontal position by the on the cross-connecting leg of the legs of the U-shaped support frame, clamp members attached to that in the pushing direction cooperate front short leg of the fixed retrieval basket.

Furthermore, the present underframe is characterized in that by the support frame in the unfolded Position of the underframe and, when used as a sports stroller, a loose child's chair is supported and is fixed in a position directed obliquely forward in the pushing direction by loading the cross-connecting leg of the legs of the U-shaped support frame. Fixed clamping members cooperate with the short leg of the fixed retrieval basket, which is at the rear in the pushing direction.

Finally, the present underframe is characterized in that by the support frame in the unfolded position of the underframe and when used as a sports stroller a loose child's chair is supported and fixed in a position inclined backwards in the thrust direction by the am Cross-link legs of the U-shaped support frame attached clamp members to the cross-link rod the front legs work together.

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The invention will now be explained with reference to the following description and the drawing. Herein shows:

ν Fig. 1 shows an underframe in the folded position, I.

Fig. 2 shows the underframe in the unfolded position, it being used as a stroller or as a recovery vehicle can be used

Fig. 3 the underframe _in 'in the unfolded position, where it is used as a pushchair, and. the support frame for a child's chair

is directed obliquely backwards in relation to the direction of thrust,

4 shows the underframe in the unfolded position, where it is used as a sports stroller, and the support frame for a child's chair

is directed obliquely forward with respect to the thrust direction.

As can be seen from the drawing, the underframe comprises two push rods 1, which at the top with a Handle 2 are provided. The upper ends of the push rods 1 can also be mutually connected by a further push rod be. Furthermore, the underframe, seen in the pushing direction, has two front legs 3, which at their lower end are provided with wheels 4, which are carried out twice in the embodiment shown. Each foreleg 3 is at some distance from its upper end by means of an articulated connection 5 to the lower end of the push rod 1 articulated. Likewise, the underframe has two legs 7 pointing backwards in the pushing direction, each of which have an impeller 4 at their lower end, the impellers being designed twice in the present exemplary embodiment

Ι are. The top of each rear leg 7 is by means of a Articulated connection 8 is connected in an articulated manner to the push rod 1. In addition, the rear legs 7 are in a de- " Distance via the wheels 4 mutually connected by means of a cross-connecting rod 9. Furthermore is a solid A retrieval basket 10 is provided, the long sides of which are articulated to the front legs 3 at points 11, 11 ' or form with the rear legs 7, this fixed retrieval basket above the cross-connecting rod 9 of the rear legs 7 lies. The articulated connection 11, 11 'lies under the articulated connections 5 of the' front legs 3 and the push rods 1. Furthermore, a support frame 12 is provided, the long sides of which at one point 17 have a rotary connection have with the push rods 1, these pivot points over the hinge points 8 of the thrust tarigen 1 and the Hind legs 7 lie. With the long sides of this support frame 12, the ends of the mutually parallel Legs of a U-shaped support frame 13 articulated at point 14. The cross-connecting leg of the legs dies U-shaped support frame 13 carries clamping members

Fig. 2 shows the position in which the underframe is used as a stroller in the unfolded position can be, wherein a dotted reproduced travel cradle 18 is supported by the support frame 12. Instead of In the travel cradle, a loose retrieval basket 19 can also be supported by the support frame 12. For fixation this support frame 12 in a horizontal position is the cross-connecting leg of the U-shaped support frame 13 by means of the clamping members 15 with the in the pushing direction connected to the front short leg of the fixed retrieval basket.

In Fig. 3 and 4 the possibility is shown

\ 1 to use the underframe as a sports stroller, a child's chair 20 shown in dotted lines being supported by the support frame 12. In Fig. 3, the cross-connecting leg of the U-shaped support frame 13 is connected by means of the clamping members 15 to the cross-connecting rod 6 of the front legs 3, so that the support frame 12, seen in the pushing direction, is directed obliquely backwards and downwards, whereby the child in Child's chair looks backwards, FIG. 4 indicates the position in which the cross-connecting leg of the U-shaped support frame 13

connected by means of the clamping members 15 to the short leg of the fixed retrieval basket 10, which is at the rear in the thrust direction Ii

is, so that the support frame 12 obliquely forward and backward

|> is directed downwards, so that the child in the high chair

j! 15 looks ahead.

f To ensure that the front legs 3 are in the

|. no turning movement in the unfolded position of the underframe

around the hinge points 5 can run around are around the

; The upper ends of the front legs 3 and around the lower ends of the

j; 20 rods 1 around rings 16 pushed on. To collapse of the underframe, these rings must be removed from the upper ends of the front legs 3 so that the push rods 1 and the front legs 3 can be folded together around the hinge points 5 while approaching one another. Finally, the underframe is provided with a brake, not shown.

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Mobile, collapsible frame

List of reference symbols

1 push rod

2 handles

3 front legs

4 impeller

5 articulated connection

6 cross-link rod

7 legs, hind legs

8 articulated joint

9 · Cross-link rod

Retrieval basket

Articulated connections support frame

Support frame clamp links rings

Travel cradle

loose basket for children’s chair

Claims (7)

PROTECTION CLAIMS 1. Mobile collapsible underframe for a stroller, a sports stroller or a recovery vehicle, characterized in that the underframe has two push rods (1) provided at its upper end with a handle (2) and two legs (3 ), which have a running wheel (4) at the lower end and which are articulated to the lower ends of the push rods at some distance from their upper end, the legs (3) at some distance below the articulation with the push rods mutually by a cross-connecting rod (6) are connected, two legs (7) pointing backwards and downwards in the thrust direction, which have a running wheel (4) at the lower end and which are articulated to the push rods at a distance from the lower ends of the push rods, while these rear legs (7) in some distance above their lower ends are mutually connected by a cross-connecting rod (9), one in one ger distance above the cross-connecting rod (9) of the fixed right-angled retrieval basket (10) arranged in the pushing direction of the rear legs, which is articulated on its long sides to the front and rear legs, with its hinge points (11, 11 ') in a plane below the Articulation points (5) of the push rods (1) and the front legs (3) lie, a right-angled support frame (12), which is articulated on its long sides with the push rods, the articulation points (17) above the articulation points (8) of the push rods (1) and the rear legs (7) lie, and a U-shaped support frame (13) which is articulated at the free ends of its legs to the long sides of the support frame (12), the cross-connecting leg of the legs of the U-shaped Support frame carries clamping members (15). ta »ι · t t · · it « I ι I I I I I · « I I ι · ■ 111 I »· 2. Underframe according to claim 1, characterized in that through the support frame (12) in the unfolded Position of the underframe and a loose travel cradle (18) or 'a loose retrieval basket (19) is supported and fixed in its horizontal position by being attached to the cross-connecting leg the legs of the U-shaped support frame (13) fastened clamping members (15) with the in the Pushing direction of the front short leg of the fixed retrieval basket (10) cooperate. 3. Underframe according to claim 1, characterized in that the support frame (12) in the unfolded position the underframe and when used as a sports stroller a loose child chair supported and in one in the Pushing direction obliquely forward position is fixed by attaching to the cross-connecting leg of the legs of the U-shaped Support frame (13) attached clamping members with the short leg in the pushing direction of the fixed retrieval basket (10) cooperate. 4. Underframe according to claim 1, characterized in that through the support frame (12) in the unfolded Position of the underframe and, when used as a sports stroller, a loose child's chair supports and is fixed in a position inclined backwards in the pushing direction by the fact that the legs of the U-shaped support frame (13) on the cross-connecting leg attached clamping members (15) cooperate with the cross-connecting rod (6) of the front legs (3). 5. Underframe according to one of the preceding claims, characterized in that the · underframe with a Brake is provided. 6. Underframe according to one of the preceding claims., characterized in that in the unfolded position of the underframe a ring (16) around the upper end of the front leg (3) and around the lower end of the associated push rod. 7. Underframe according to one of the preceding claims, characterized in that the push rods 1 is mutually connected at their upper ends by a push rod.