DE202011050809U1 - Parking brake device for a sliding carriage frame - Google Patents

Abstract

Parking brake device for at least one rear wheel on a push carriage frame (1) with a base element (2), on the rear side of which at least two rear wheels (3), at least one push rod (4, 5) with holding devices for at least one insert and a head part (7) At least one push handle (8, 9) and at least one front wheel (10) are provided on the front, the at least one push rod (5) being pivotably mounted on the back of the base element (2) and at least in the set-up position by means of locking means on the base element (2) is held obliquely upwards and backwards and after releasing the locking means and after being folded back into an extension position horizontal to the base element (2) in, on or under the base element (2) into a stowage position from the back to the front, and in which at least one rear wheel (3) concentrically on the inside a locking ring (11) made of holes or a Za A crown with tooth gaps is provided, into which a locking bolt (21) on the sliding carriage frame (1) when operating a ...

Description

The invention relates to a parking brake device for at least one rear wheel on a sliding carriage frame with a base member on the rear side at least two rear wheels are provided laterally, at least one push rod with holding devices for at least one insert and a head part with at least one push handle and front side at least one front wheel, said at least one push rod is pivotally mounted on the back of the base member and at least in the installation position by means of locking means on the base member is held obliquely upwards and backwards and after loosening the locking means and after rear folding in a horizontal element to the horizontal extension position in, on or under the base member in a stowed position from the rear to the front is displaceable, and wherein on the at least one rear wheel inside concentrically a locking ring of holes or a sprocket with tooth spaces provided i st, in which engages a locking pin on the sliding carriage frame when operating an actuator or acts on a parking brake.

A generic Schiebewagengestell is from the DE 20 2010 000 510 U1 known for a child and / or doll carriage. The peculiarity of this trolley frame is that the push rod, which is mounted centrally on the back of the base member, is mounted from an obliquely raised sliding position down pivotally on the base member and after taking the horizontal position in a channel of the base member is inserted, so that after previous removal of the attachment device for a stroller use a particularly small structural arrangement of the sliding carriage rack can be achieved and this stowed with little storage space or can be deposited in the trunk of a vehicle.

A collapsible sliding carriage, in which the wheels are designed to be applied to the seat and in which the wheels are connected on one side of the car with the side of the opposite side of the car by rods such that when turning the side rests, the wheels are pivoted under the seat, is off of the DE-PS 255 589 known. On the seat part, which forms a base member, a push bar is pivotally mounted, which consists of telescopically telescoping side pipes. The bracket is designed to be foldable. From the CH-PS 255 589 is a similar stroller known in which instead of a U-shaped push bar center back protruding a push rod on the base member is mounted.

Furthermore, it is well known, as a parking brake for stroller on the wheels pegs or sprockets concentric to install. On the carriage frame, in particular on the side rails or on the axis guides are provided in which locking bolts are slidably mounted, which are hineinschiebbar for locking the rear wheels in the tooth spaces or in the congruent holes. This can be done by an operable with the foot mechanics or else via a handle which is attached to the handle bar, on the example, a Bowden cable is actuated, which acts on the locking pin.

In other parking brakes, a brake shoe is pressed directly onto the tire of the rear wheel or a brake shoe of a disc brake in the direction of the other opposite brake shoe instead of a locking pin. By clamping a safe state of the sliding carriage frame is given when not pushing. Such constructions are basically also in wheelchairs, rollators or Gehrollhilfen or even used in shopping carts, so then when no pushing force is exerted and the hand is removed from the push handle, automatically or desired a parking brake. The braking device can also act on both rear wheel assemblies. In many cases, however, it is sufficient if only a single rear wheel is equipped with such a rotation locking mechanism.

From the US 2007/025 74 71 A1 Furthermore, a three-wheeled stroller is known, on which a push rod in extension of both the front wheel and on lateral U-shaped straps, the rear wheels are attached. On the push bar adjustable a holding device is mounted to attach various children's inserts can.

Based on the prior art, the present invention seeks to provide a generic stroller with a braking device that allows the braking device is operated via an operating rod mounted in the push rod and that the push rod when not in use in a tunnel of the base element in horizontal Position is insertable.

The invention provides two solutions in the independent claims 1 and 2. The solution according to claim 1 is that an actuating rod, which is arranged extending in or on the push rod in the longitudinal direction and rotatably mounted and is pivotable about a defined angle when operating the thus operatively connected actuating element, with a transmission at the lower end in Is provided area of the pivot axis of the push rod, which Transmission converts the rotational movement of the actuating rod in a longitudinal movement of a slider which is connected to a bolt which is mounted slidably in a bearing sleeve centrally on the axis of rotation of the pivot bearing of the push rod and the brake sleeve bearing and the pivot bearing laterally by a defined length when operating the brake survives and with unoperated brake, the bearing sleeve and the pivot bearing does not survive and the front side fitting the locking pin moves synchronously directly against the force of a return spring. The pivot bearing is arranged together with the push rod and the transmission in the horizontal position of the push rod in the longitudinal direction of the base member in non-protruding pin sliding and retractable in or on the base member.

The solution according to claim 2 differs by the type of execution of the parking brake, according to which the locking pin is not directly, but indirectly via interposed coupling rods operable. This has the advantage that the rear wheels can also be attached to rockers or to projecting laterally and rearwardly directed bearing arms on the base member. The solution of the independent claim is characterized by an actuating rod which is arranged to extend or rotate in or on the push rod in the longitudinal direction and is pivotable about a defined angle when operating the actuating element operatively connected therewith, with a gear at the lower end in the area the pivot axis of the push rod, which transmission converts the rotational movement of the actuating rod in a longitudinal movement of a slider which is connected to a bolt which is mounted in a bearing sleeve centrally on the axis of rotation of the pivot bearing of the sliding rod and after actuation of the brake bearing sleeve and the Swivel bearing does not protrude laterally and with the brake released, the bearing sleeve and the pivot bearing protrudes by a defined length and the front side fitting the locking pin directly or via a coupling rod with an extension provided to the bolt Druc Kbolzen indirectly displaced synchronously against the force of a return spring. The pivot bearing is arranged together with the push rod in the horizontal position in the longitudinal direction of the base member in not protruding bolt sliding and retractable in or on the base member.

The sliding rod which can be slid into and / or onto the base element is provided with a braking device which is fully functional when the sliding rod is erected and can be uncoupled when the sliding rod is pivoted and pushed in by the elements causing the determination, such as locking bolts. These locking bolts can be mounted axially displaceable to the axis of the individual wheels. But they can also be designed as a pivoting rocker, which, depending on the operation of the braking device, fall radially into the tooth gaps of a ring gear and thus cause the locking of the wheel. For the drive, a coupling gear between slide and swing rocker is required to implement the longitudinal movement in a pivoting movement.

The invention is not bound to a particular construction of the suspension and the brake par excellence. It is also applicable when the wheels are mounted on rockers which are pivotable on the base member against the force of a spring. It must be ensured in this case that the longitudinal forces on the locking pin or on the brake shoe of a disc brake or on the brake shoe, which is aufdrückbar on the tire, are transmitted. This can be done in the simplest version via a coupling rod, z. B. in the use of a rocker arm via a double-sided lever which is rotatably supported at one end with the locking pin and at the other end with a pressure pin on the rocker, to transmit the movement of the slider in the pivot joint of the push rod. It can also be z. B. Bowden cables are used, wherein the pressure pin is connected to the soul of the Bowden cable and the brake is actuated in the desired manner by the corresponding application of force. The parking brake is always triggered by operating an actuating element which is in operative connection with the actuating rod. This can be, for example, in the simplest version, a selector rod attached to the operating rod itself, which can be pivoted, for example, by about 10 ° to about 40 °, so that the actuating rod rotates at the same angle. The transmission to the slide can be done by means of an eccentric on the bottom side in the housing of the swivel joint of the push rod. But it can also be a pinion attached to the actuating rod, which engages in a rack of the slider, so that the rotational movement is converted into a longitudinal movement of the slider.

The invention provides a simple decoupling of the pivot joint with the bolt slidably mounted therein in a sleeve of the pressure pin, which is guided in an axially adjoining housing part of the base element, so that when the bolt does not protrude from the joint, the push rod in the horizontal position in the tunnel or in the channel of the base member is inserted, for which purpose a longitudinal guide is provided in the tunnel or channel for the joint. Shall now the collapsed frame be used again, so the push bar can be brought forward. The pivot then assumes its rear end position in the channel. By pivoting the push rod is a fixation of the joint in the guide. By latching or overlapping a securing bracket, the push rod is held in the oblique sliding position on the head of the base member. For this purpose, this head has a U-shaped recess into which the push rod engages in a form-fitting manner and is held secured by locking means.

It can be seen that automatically the bolt of the slider comes back into the abutment position on the pressure pin, so that upon actuation of the actuating element rotation of the actuating rod can be effected by a certain angle, which is converted into a longitudinal movement and so the locking pin or the Pressure pin causes to get into a locking position or in an unlocked position. Conveniently, at least one of these bolts is provided with a return spring, so that when inserted push rod inevitably in the non-use position, the wheels are not locked, blocked or not blocked.

In a further embodiment, it is provided that the at least one push rod is a profile tube with lateral longitudinal guides or with a mounted guide sleeve for fastening means on the holding device for use and designed as a single push bar or combined with such further combined, both parallel to the center axis of the Base element are arranged running. It is further provided that the holding device for use height adjustable on the at least one push rod or on a guide sleeve on the push rod is fixed and can be moved from an upper position of use in a lower, decoupled from the push rod position of use, in which the holding device on a head part of Base element is seated and the push rod is pivotable in the horizontal.

There is a general desire to be able to adjust the length of the push bar to the size of the person pushing. The invention is therefore also applicable to a telescopic rod assembly. If the push bar is telescopic, the operating rod must also be carried out so. The actuating rod can expediently consist of two square, telescoping tubes, which are connected to one another only via this form-fitting, so that they can follow the adjustment of the height position of the telescopic tube of the push rod. For this purpose, the two parts of the actuating rod on the one hand in the upper head portion of the sliding rod are rotatably and non-displaceably mounted and on the other hand before or in the region of the pivot joint of the push rod in the lower region of the lower push bar tube profile, so that the nested tubes automatically follow the length adjustment of the push bar.

In principle, the profile tubes of the push bar can be visibly inserted into one another. But it is also possible to raise a guide sleeve on the outer tube, on which then the holding device for the stroller insert or doll carriage insert or other use is fixable. This guide sleeve is of elongated design and may be formed together with the outer guide tube profiles so that the holding device leaves the guide sleeve when pushed down and touches the base member so that the push rod automatically enters the U-shaped opening portion of the holding device and the head portion of the base member and to the rear, after releasing the lock, is pivotable. Here are manifold configurations of the bracket, as they are already in the DE 20 2010 000 510 U1 are indicated.

The teaching according to the invention can also be provided in a continuous push rod. Further, it can be combined in a push bar assembly with a second, parallel to the first provided push bar. The push rods then run parallel to each other and form a unit. In this case, the actuating rod can also be arranged on the outside or between the two rods. These can also be provided with a cladding element or with a common guide sleeve on which the fastening device for use can be attached.

In the event that only the push rod is provided in the form of a telescopic or one-piece aluminum profile, a head part can be provided on this top side, on which a push handle or two push handles pivotally mounted about a horizontal axis, can be fastened. This has the advantage that the handlebar can also be used at the same time as a brake lever for the parking brake device. By raising the handlebar or the push handle while the braking device is actuated and the locking pin pressed into the recess or pivoted into the tooth gap, whereby a fixed brake is realized. The same can be realized even with a disc brake by pressing a brake shoe or by applying such on the outside of the shell of a wheel.

It can be seen that the pivoting movement of the push bar or push handle must first be transferred to the actuating rod by an adjustment angle of approximately 10 ° to approximately 20 °. This is done in a simple manner via a radially projecting driving mandrel on the pivotally mounted in the head housing end portion of the push bar. The mandrel is pivoted when raising to the rear and when pressed down forward. This mandrel engages in a driving opening in a guided rod, so that it is moved tangentially with respect to the outer jacket wall of the bracket, depending on the direction. The movement of this rod is transmitted to an eccentric, which is fixedly secured to the actuating rod, so that it is rotated in the desired manner by a defined angle. For this purpose, the bearing pin on the eccentric engage in a transverse slot in the guided connecting rod.

If the push bar or push handle is pivoted upwards, then the rotational movement is determined such that the slide provided on the bottom side in the rotary joint of the push bar is forced outwards. Here, two counter-rotating slide can be provided so that both rear wheels are operated in the same way. The longitudinal movement causes the bolt to extend by a defined stroke, for example by 1 cm. This is already sufficient to be able to push the downstream pressure pin, which may also be the locking pin in a direct arrangement, into the hole of a perforated ring on the wheel, thereby ensuring a secure parking brake is effected. If a reverse movement, the carriage frame can be pushed again. If the locking pin engages by a spring in the locking pin, the movement pattern must be designed so that the pressure pin ends in the locked state of the wheel in front of the pivot bearing, so that a decoupling of the push rod for insertion is possible.

As already described, but also a lever can be actuated via the pressure pin, which causes a displacement of the locking pin. Likewise, however, can be actuated by suitable power transmission elements, a rocker at one end of the pressure pin is attached and is provided at the other end of the locking pin, which pivots into a tooth gap.

The invention will be explained in the following with reference to the embodiment shown in the drawings.

In the drawings show:

1 a rear view of a carriage frame with a vertical partial section with the components essential to the invention,

2 a side view with a partial section of the sliding carriage rack after 1 .

3 a horizontal sectional drawing through a headboard on the push bar with mounted push handles and

4 a partial section drawing through the rear wheels and a plan view of the wings from behind and in the hinge of a drawn in section sliding rod.

The embodiment shown in the figures shows a sliding carriage frame 1 , as it can be used for example as a stroller frame, without the attachment device for receiving a stroller insert, z. B. a baby carrier or a sports seat insert or a reclining insert. The cart frame 1 consists essentially of a base element 2 , on the rear side swinging 27 . 28 are pivotally mounted against the force of a spring, not shown. The springs are arranged so that the spring force acts downward, leaving the rear wheels 3 can roll on the floor. On a resilient design can also be omitted, then the wings are fixed as rigid arms.

Out 2 it is apparent that in addition to the rear wheels 3 a front wheel 10 is provided, which is fixed to a holder which is pivotable about a vertical axis. This holder is on the base element 2 which consists of a tunnel-shaped, extending from back to front channel and is made of an aluminum profile tube. Rear side, the base element 2 an attached, preferably made of plastic headboard 22 on, the upwardly extending oblique channel for positive reception of a push bar 4 . 5 having. Furthermore, to reinforce the base element 2 lateral side support 36 provided, the back, like out 4 it can be seen on the base element 2 are screwed on pipe fittings. These side beams 36 extend forward and are at the front of the base element 2 also attached. In 4 are laterally to the headboard 22 two mounting sections for the side support 36 visible, noticeable.

Each of the rear wheels 3 has at the hub a concentric shape of a Arretierungskranzes 11 a lot of holes on how out 2 is apparent. In the holes is a locking pin 21 insertable, the swingarm 27 . 28 parallel to the axis of the wheels 3 slidably arranged. This locking pin 21 is with a coupling rod 20 hingedly connected, in turn, around the pivot bearing 34 rotatable on the swingarm 27 respectively. 28 is attached. It can be seen that by this double-sided lever during its rotation of the locking pin 21 in a hole of the hole wreath 11 pushed in and opposite Movement is pulled out again, whereby the desired parking brake is realized.

In the base element 2 , namely in the headboard 22 , but is also pivotable the push bar 4 . 5 about a horizontal axis, parallel to the axis of the rear wheels 3 running, arranged. This push bar 4 . 5 consists of a lower push bar 5 made of a profile tube, z. B. made of aluminum, consists, and introduced into this profile tube upper push rod 4 so that both rods 4 and 5 can be adjusted relative to each other. It is a telescopic version, so that the height or the length of the push bar 4 . 5 can be adjusted. The two push rods 4 . 5 are coordinated so that the total length when pushed together push rods 4 . 5 the length of the tunnel in the base element 2 equivalent.

On the push bar 4 . 5 is also a guide sleeve 6 mounted, which extends over the entire adjustment of a holding device, not shown, on the guide sleeve 6 or on the sleeve anmontierbar and also arranged in different height positions can be arranged, so that the mountable on the holding device insert, as shown in DE 20 2010 000 510 U1 known, can be brought into desired height positions. However, this is not essential to the invention, merely shows that the guide sleeve 6 the bottom push bar closes and thus defines the length of the tunnel with, as the sleeve 6 with in the tunnel in the base member is inserted, when the fastening device is removed, or from top to bottom on the headboard 22 is postponed, if this is designed accordingly. The fastening device slides over the lower edge of the guide sleeve 6 , where it is apparent that then the push bar 4 . 5 with the guide sleeve 6 from a rear U-shaped recess in the head part 22 and the fastening device can be swung out. To enable this swinging back, the lower push bar is 5 swung in a U-shaped, accessible from behind recess obliquely upwards and can be folded back after loosening a locking means not shown to the rear. This makes it possible to use the push bar 4 . 5 out of the 2 apparent oblique position to spend in a horizontal lower position, according to the push bar along with the internal components 4 in the channel 33 in the base element 2 to be able to push in.

It can be seen that in this way the push bar can be brought into a stowed position in a simple manner and thus the stowage volume can be kept very low as such. If no internal power transmission elements in the push rods 4 . 5 are arranged, the swinging down according to the DE 20 2010 000 510 U1 possible. This is likewise possible with the braking device designed according to the invention. This consists of two telescopically telescoping actuating rods 13 . 14 inside the profiles of the push rods 4 . 5 are arranged. The height can not be determined here, but is due to the height adjustment of the relatively mutually displaceable sliding bar parts 4 . 5 bound. The actuating rods 12 . 13 have a square profile on what is out 3 and from 4 is apparent. They are on the bottom and top of the push rods 4 . 5 height-fixed, but rotatably mounted, so that the actuating rods 12 . 13 both rotated and can be pushed into each other.

According to the illustrated embodiment is at the upper end of the actuating rod 12 within the header 7 with the case inside 1 and in 3 drawn in section, an eccentric 26 fastened, which has a bearing pin at a defined distance from the axis, on which a rod 25 is attached. This rod 25 has a recess into which a driving pin on one of the push handles 8th . 9 within the housing of the headboard 7 intervenes. The push handles 8th . 9 are in the case of the head 7 connected so that, no matter what grip 23 is pressed, when pressed automatically provided on one of the two legs approach causes a displacement of the rod of the linkage, causing the eccentric 26 a force is exerted that the actuating rod 12 rotates by a defined angle. How out 3 it can also be seen that the two push handles are 8th . 9 which are interconnected by a spring 30 on a printing plate 31 at the middle portion of the rod on the one hand and on a housing wall 32 supported to thereby a rotational movement of the actuating rod 12 to determine the brake effect. If, however, a pressure force from above on the handles 23 exerted, so there is an opposite movement of the rod 25 and thus an opposite rotation of the actuating rod 12 , The feather 30 is designed so that it always exerts a compressive force and the push handles 8th . 9 if not loaded by one hand, swing upwards and automatically trigger a braking function.

To the locking of the locking pin 21 to effect is in the lower section of the push bar 5 namely in the pivot bearing 18 the push bar, a gearbox 14 provided, which consists of a wound on the actuating rod gear 35 whose pinion in the teeth of two oppositely movable racks on sliders 15 intervenes. With the rotation so both the left and the right rear wheel 3 either locked or released. With the sliders 15 are bolts 16 connected to the pivot axis of the pivot bearing 18 lie. Bolts 16 are rotatable in bearing sleeves 17 of the pivot bearing 18 stored and can be laterally moved beyond the pivot bearing addition of a few millimeters or in the in 1 shown position to be spent back. The longitudinal displacement is thereby of the angular adjustment of the gear 35 dependent. The bolt 16 is congruent to a pressure pin 19 disposed within a cover on the base member 2 is guided and by a return spring in the direction of the bolt 16 is pressed when no pressure force on the push handles 8th . 9 is exercised. The pressure pin 19 So moves in the direction of the pivot bearing 18 , The pressure pin 19 but is what 4 can be removed, at the upper end of a double-armed coupling rod 20 hinged so that automatically the bottom rotatably mounted locking pin 21 in a hole of the hole wreath 11 slides in and so realized the parking brake. In this state, it is now also possible, after dissolution of the locking means, the push rods 4 . 5 on the one hand collide and on the other hand to fold down into the horizontal. In the height position are the push rods 4 . 5 locked via locking means. Because the pivot bearing 18 in the longitudinal channel 33 of the base element 2 it is possible to use the push bar 4 . 5 in the channel 33 push it forward as the bolts 16 on the sides of the pivot bearing 18 end up. So there is a decoupling. The pressure bolts 19 are dimensioned so that they can move by the spring force only to the separation point. The very bulky push bar, consisting of the push handles 8th . 9 So it can be between the rear wheels 3 be pushed so that the so folded sliding carriage frame 1 can be stowed in the smallest space. On the other hand, it is possible in a simple manner, the push rods 4 . 5 , from the channel 33 of the base member to pull back and swing up until the locking means, which are not shown, the push rod 4 . 5 in the U-shaped receptacle of the headboard 22 hold.

The embodiment shows that a parking brake device can be realized in a simple manner even with such a complex design of the storage of a push rod, which ensures that when the push handle 8th . 9 is released, an automatic detection is carried out so that the sliding carriage rack can not roll down in an unintentional manner, for example on a slope.

LIST OF REFERENCE NUMBERS

1

carriage frame

2

base element

3

rear wheel

4

push bar

5

push bar

6

guide sleeve

7

headboard

8th

Push handle / actuator

9

Push handle / actuator

10

front

11

Arretierungskranz

12

actuating rod

13

actuating rod

14

transmission

15

pusher

16

bolt

17

bearing sleeve

18

pivot bearing

19

pushpin

20

coupling rod

21

locking bolt

22

headboard

23

Handle

24

coupling gear

25

pole

26

eccentric

27

wing

28

wing

29

30

feather

31

printing plate

32

housing wall

33

channel

34

pivot bearing

35

gear

36

side beams

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202010000510 U1 [0002, 0016, 0032, 0033]
• DE 255589 [0003]
• CH 255589 [0003]
• US 2007/0257471 A1 [0006]

Claims (10)

Parking brake device for at least one rear wheel on a sliding carriage frame ( 1 ) with a base element ( 2 ), at the rear at least two rear wheels ( 3 ) at the side, at least one push bar ( 4 . 5 ) with holding devices for at least one insert and a head part ( 7 ) with at least one push handle ( 8th . 9 ) and front side at least one front wheel ( 10 ) are provided, wherein the at least one push rod ( 5 ) on the back of the base element ( 2 ) is pivotally mounted and at least in the installation position by means of locking means on the base element ( 2 ) is held obliquely upwards and rearwards and after loosening the locking means and after folding back into a base element ( 2 ) horizontal extension position in, on or under the base element ( 2 ) is displaceable in a stowed position from the rear to the front, and wherein on the at least one rear wheel ( 3 ) concentric inside a locking ring ( 11 ) is provided by holes or a toothed ring with tooth gaps, into which a locking pin ( 21 ) on the sliding carriage frame ( 1 ) when operating an actuating element ( 8th ) engages or acts on a parking brake, characterized by an actuating rod ( 12 . 13 ) in or on the push bar ( 4 . 5 ) is arranged extending in the longitudinal direction and is rotatably mounted and by a defined angle when operating the thus operatively connected actuating element ( 8th ) is pivotable, with a transmission ( 14 ) at the lower end in the region of the pivot axis of the push rod ( 4 . 5 ), which transmission the rotational movement of the actuating rod ( 12 . 13 ) in a longitudinal movement of a slider ( 15 ), which with a bolt ( 16 ) connected in a bearing sleeve ( 17 ) centrally on the axis of rotation of the pivot bearing ( 18 ) of the push bar ( 4 . 5 ) is displaceably mounted and when operating the brake, the bearing sleeve ( 17 ) and the pivot bearing ( 18 ) protrudes laterally by a defined length and with un-actuated brake, the bearing sleeve ( 17 ) and the pivot bearing ( 18 ) does not survive and the front side fitting the locking pin synchronously moves directly against the force of a return spring, and that the pivot bearing ( 18 ) together with the push bar ( 4 . 5 ) and the transmission ( 14 ) in the horizontal position of the push bar ( 4 . 5 ) in the longitudinal direction of the base element ( 2 ) with non-protruding bolt ( 16 ) displaceable and retractable in or on the base element ( 2 ) is arranged. Parking brake device for at least one rear wheel on a sliding carriage frame ( 1 ) with a base element ( 2 ), at the rear at least two rear wheels ( 3 ) at the side, at least one push bar ( 4 . 5 ) with holding devices for at least one insert and a head part ( 7 ) with at least one push handle ( 8th . 9 ) and front side at least one front wheel ( 10 ) are provided, wherein the at least one push rod at the back of the base element ( 2 ) is pivotally mounted and at least in the installation position by means of locking means on the base element ( 2 ) is held obliquely upwards and rearwards and after loosening the locking means and after folding back into a base element ( 2 ) horizontal extension position in, on or under the base element ( 2 ) is displaceable in a stowed position from the rear to the front, and wherein on the at least one rear wheel ( 3 ) concentric inside a locking ring ( 11 ) is provided by holes or a toothed ring with tooth gaps, into which a locking pin ( 21 ) engages when operating an actuating element on the carriage frame or acts on a parking brake, characterized by an actuating rod ( 12 . 13 ) in or on the push bar ( 4 . 5 ) is arranged extending in the longitudinal direction and is rotatably mounted and by a defined angle when operating the thus operatively connected actuating element ( 8th ) is pivotable, with a transmission ( 14 ) at the lower end in the region of the pivot axis of the push rod ( 4 . 5 ), which transmission the rotational movement of the actuating rod ( 12 . 13 ) in a longitudinal movement of a slider ( 15 ), which with a bolt ( 16 ) connected in a bearing sleeve ( 17 ) centrally on the axis of rotation of the pivot bearing ( 18 ) of the push bar ( 4 . 5 ) is displaceably mounted and after actuation of the brake, the bearing sleeve ( 17 ) and the pivot bearing ( 18 ) does not protrude laterally and when the brake is released, the bearing sleeve ( 17 ) and the pivot bearing ( 18 ) protrudes by a defined length and the end face fitting the locking pin ( 21 ) directly or via a coupling rod ( 20 ) with an extension to the bolt ( 16 ) provided pressure pin ( 19 ) synchronously displaces synchronously against the force of a return spring, and that the pivot bearing ( 18 ) together with the push bar ( 4 . 5 ) in the horizontal position in the longitudinal direction of the base element ( 2 ) with non-protruding bolt ( 16 ) displaceable and retractable in or on the base element ( 2 ) is arranged. Parking brake device according to claim 1 or 2, characterized in that the at least one push rod ( 4 . 5 ) a profile tube with lateral longitudinal guides or with a mounted guide sleeve ( 6 ) for fasteners on the holding device for use and as the only push bar ( 4 . 5 ) is provided or combined with such a further combined, both parallel to the center axis of the base element ( 2 ) are arranged running, that the holding device ( 6 ) for use adjustable in height at the at least one push bar ( 4 . 5 ) or on a guide sleeve on the push bar ( 4 . 5 ) and from an upper position of use in a lower, of the push bar ( 4 . 5 ) decoupled use position can be brought, in which the holding device on a headboard ( 22 ) of the base element ( 2 ), and that the push bar ( 4 . 5 ) is pivotable in the horizontal. Parking brake device according to claim 1 or 2, characterized in that on the head part ( 7 ) of the at least one push bar ( 4 ) at least one push handle, preferably in the form of an annular handle or a push bar, or two push handles ( 8th . 9 ) with handles ( 23 ) are fastened, which are pivotally mounted about a horizontal axis and form the actuating element for the brake, via a coupling gear, preferably from a guided rod ( 25 ), with an eccentric ( 26 ) on the actuating rod ( 4 ) on the one hand and with a driving pin on a rotatable part of the handle or push handle ( 8th . 9 ) connected is. Parking brake device according to claim 1 or 2, characterized in that the at least one push rod ( 4 . 5 ) is a telescopic rod and is formed extendable, wherein at the upper end of a headboard ( 7 ) for the storage of an annular handle or for one or two push bars or push handles ( 8th . 9 ) is provided, and that the actuating rod ( 12 . 13 ) is a telescopic pole with a polygonal cross-section, wherein the upper actuating rod ( 12 ) in the upper push bar ( 4 ) and the lower actuating rod ( 13 ) in the lower push bar ( 5 ) is rotatably mounted. Parking brake device according to claim 2, characterized in that the rear wheels ( 3 ) at the ends of against the force of at least one spring each pivotable on the base element ( 2 ) provided swinging ( 27 . 28 ) and that on the wings ( 27 . 28 ) the locking pins ( 21 ) are mounted displaceably or pivotally and that these on each one, the coupling rod ( 20 ) forming, double-sided levers are operable, with the pressure pin ( 19 ) on the one hand and with the locking pin ( 21 On the other hand is in operative connection. Parking brake device according to claim 1 or 2, characterized in that the transmission ( 14 ) from one on the operating rod ( 5 ) attached gear ( 29 ) or a partial sprocket whose teeth are in a rack on the slider ( 15 ) intervene. Parking brake device according to claim 2, characterized in that the pressure pin ( 19 ) acts on the cables of a Bowden cable, the locking pin ( 21 ) shifts. Parking brake device according to claim 2, characterized in that the locking means in the head part ( 22 ) of the base element ( 2 ) are guided bolts which, when the push bar ( 4 . 5 ) in recesses in the same are inserted or the push bar ( 4 . 5 ) behind. Parking brake device according to claim 2, characterized in that the sliding carriage frame is a child and / or doll carriage frame, a rollator, a wheelchair or a shopping cart.

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