DE4115649A1 - Electrically-driven golf bag trolley - has battery housed in base of rigid golf bag receiving clubs - Google Patents

Abstract

The golf bag trolley comprises a 2-wheeled folding chassis with a self supporting housing (2) acting as the golf bag into which the golf clubs are fitted. The wheels (12,13) are rotated via respective battery operated drive motors (24,25) acting directly on the wheel axle (11), with the battery supported above the wheels (12,13) at the base of the self supporting housing (2) and recharged via a charging cable. Pref. each drive motor (24,25) lies at right angles to the wheel axle (11), supported by a mounting arm (10). ADVANTAGE - Allows simple maintenance and repair of electric motors.e

Description

The invention relates to a two-wheel hand cart for transporting small loads, especially golf carts the golf cutlery, as a self-supporting housing trained golf bag, the foldable and a upright handle steerable chassis and a battery powered drive motor.

In known golf carts of this type, its wheels coupled with a drive motor. Such indirect drives are known in multiple versions. Such an example has known auxiliary drive from DE-OS 33 02 014 especially the disadvantage that a separate chassis is required which in turn does not combine with all types of golf carts bar or is so bulky, especially when transported in a car is that it is not at all or only with considerable additional effort can be transported. The same applies in principle for the golf cart known from DE-OS 36 41 036, at which is provided a third wheel on which the drive should act. The disadvantage here is that a cumbersome Licher construction is required and that the third wheel represents significant disability, the golf bag and the chassis represent separate units. A similar one Golf cart is for example from DE-OS 26 34 765 known in which a complex chassis with a flat if very complex trained drive motor can be combined is. Such training can be done in a normal person motor vehicles are not easily transported, so that the value of such a car is very limited. In today's golf sport, the effort is unmistakable, not always only on a certain local golf course, but also on the neighboring or more distant Gulf places to play, so that an intermediate transport of a ent speaking golf cart is often required. A more compact golf cart is known from DE-PS 37 14 066, where the self-supporting housing the battery part of the  Drive motor and in some ways also the drive can accommodate, here again a third wheel, which is firmly connected to the actual housing, as Drive wheel serves while equipped with plug-in connections Additional support wheels are required to such To be able to move golf carts on the golf course. Here too is again disadvantageous that the wheels or in other words the chassis forms its own unit, which also corresponds chend must be taken separately during transport. Is missing one of the individual parts, in particular one of the wheels, can the golf cart is not operated at all. Disadvantageous is also that the battery required for the drive is advantageously housed in the housing, but only can be removed from the cavity with considerable effort can, between the tube holders for the golf cutlery is trained.

The invention is therefore based on the object can be used as a golf cart or as a shopping trolley to create the one incl. drive, battery and wheels one compact unit that is quick and easy to drive represents, which is also particularly suitable for transport.

The object is achieved in that the housing in the floor area is a parallel handlebar-guided wheels mounted on short axles including the handlebar receiving recess that the parallel link with the foldable rod the handle over a swiveling effect Handlebar system are connected that each wheel one or more rod-shaped drive motors on the fixed arranged short axis are assigned acting and that the battery is integrated into the housing above the wheels arranges and is equipped with a charging cable.

With such a two-wheel hand trolley is first  one advantage that he is in the folded state an easily transportable unit that is advantageous can be stored in any car. This includes Transport unit all parts of the two-wheeled trolley, so that after reaching the goal in a few simple steps can be upgraded to then as a golf cart or also to be available as a small transport trolley. over the parallel link and the ge on a bearing arm The short chassis can hold the entire chassis together brought and brought together that it is within the self-supporting housing is stored by then also at the same time the battery is housed with the over has a charging cable, so that during rest periods recharged in the garage, for example that is particularly user-friendly. The An drive motors are designed and arranged in the same way, that they do not hinder the compact unit as such, Rather, it is fully integrated with the chassis or can be manipulated together with the wheels. The drive motors are in an arrangement that they can act directly on the short axes, so that the golf cart as such is driven directly, where the drive motors together with the wheels turn the fixed axis.

After an expedient training of the invention provided that the drive motors are perpendicular to the short axis are arranged seated in the wheel, the drive motors represent a kind of spoke or even the spokes the same can include early. Since they are rod-shaped there are practically any number of one wheel or a short axis, depending on which Performance is required of them.

The drive motors assigned to the wheels are in front environmental protection housed if, like  provided according to the invention, the wheels one from the outside have edges running to the short axis. The individual motors are then within one Cavity, where they can then be used without problems for Maintenance purposes are achievable when, as according to the invention provided, the panel is detachable. It ver it is understood that the drive motors as such are within the wheels are detachably housed to take them out when needed change and wait or to be able to exchange them with others.

To such a handcart also with the necessary To be able to handle problem-free is according to the invention provided that the housing of a light metal tube frame is formed, which is covered with cloth and z. B. in the Battery-receiving sub-areas is divided. The others Sub-areas take the tubes for the golf cutlery, d. H. So for the racket on or the area in which the wheels and the handle can be inserted. Other areas are used to hold the golf balls and other utensils. Since the actual golf cart, d. H. both the housing like the chassis, for example, made of aluminum tubes exists, which are covered with cloth, so a closed To give housing is the basic weight of such Car extremely low. The pushcart as a whole can well traded with it and placed in a car, for example or be taken out of it.

The parallel links and that are advantageous Handlebar system and the rod as the lines receiving Hollow tubes are formed, which is not only in terms of weight Brings advantages, but also because the cables are then available can be housed partially protected so that they neither a hazard nor a hindrance for the user represent.

To conduct current between the individual parts, esp  in particular the standing and the rotating are provided, that the bearing arm is fixed between the parallel link and in it horizontal axis is assigned to a rotating union, so that the current can be transmitted continuously.

Another way of power transmission between Drive motor and wheels is the one at which the drive motor integrated in the bearing arm and the short axis with the wheels is rotating. This training has the advantage that a rotating union can be dispensed with because the drive motor as such is constant in its position maintains the cables leading aluminum tubes while the axle rotates with the wheels attached to it in this way to move the trolley by motor.

In order to be able to maintain the battery once and for others hand such a trolley without drive if necessary and thus to be able to operate with a lower weight, it is provided that the battery in a guide in the housing is locked so that the battery when needed without any problems from the housing where it is safely stored under brought to be able to remove. The battery can then be charged or stored somewhere else, to if necessary and d. H. if self-propulsion is required to be used again in order to then use the drive motor to supply the necessary electricity.

First, a secure arrangement of the wheels inside to ensure the housing and on the other hand dare to stand in the collapsed state To provide security, it is provided that the bottom of the Ge is designed as a base plate.

The handcart is usually pulled by the golfer, where the drive ensures that the Golf players do not go through themselves when driving the trolley  Handcart must feel stressed. Ultimately, even to him the opportunity to get away from the handcart, for example letting it go up a slope, the Wheels are studded. Then the wheels can one generate so much friction that they also the golfer pull yourself and of course the weight of the Handcart stored objects and especially the Battery.

After further training, to accommodate the drive motor and the battery in the housing, the drive motor being movable and bendable formed waves with the wheels, preferably with the solid standing short axes is connected to the Parallel core slidably guided and detachable with the Drive motor are connected. Such a solution gives Possibility to use larger drive motors and the Driving force on the flexible or bendable shafts to transfer the drive wheels. Such flexible waves are known in principle, an application for such Hand carts, in particular golf carts, are not yet available has become real because the rotating axes are not without can be accommodated in such handcart and because a perfect transmission of power to the wheels was not known. The flexible design of the waves enables an optimal connection or an optimal connection close to the drive motor, the shafts as such the movements of the chassis or the folding linkage be able to carry out without being influenced or to influence them.

A supplementary appropriate execution provides that the axial axis of the drive motor with one of the flexible Shafts are directly connected to which a spur gear is assigned is in which a spur gear assigned to the second shafts combs and that both shafts at the other end with the short axes assigned bevel gears corresponding bevel gears are equipped. It is through these means of transmission  possible, the driving forces of the drive motor safely and simply on the flexible shafts and from there on the wheels transferred to. The use of bevel gears allows that the two waves make certain movements, what is not to be avoided altogether, since it is together with the folding linkage or the chassis when folding the drive frame or when moving apart.

A flawless power transmission is guaranteed performs because the spur and bevel gears according to the invention same number of teeth or same pitch circles with the same Have module.

Should major movements due to the construction of the handcart cannot be avoided, so there is an overhang to avoid stressing the waves by ensuring that the Waves are designed telescopic. The waves can then when retracting the chassis, for example slide into each other and thus shorten while they are at Extending the chassis and the wheels accordingly can easily adapt to the changed circumstances without that when turning, d. H. when transferring the drive energy Problems could arise. This is particularly the case if the shafts in the insertion area have teeth or tooth gaps are provided so that the interlocking of the inner tele cop and the outer telescope is ensured.

Depending on the design of the trolley, it is according to the invention even possible on transmission parts in the area of the wheels to do without if the axial axis of the drive motor with one of the flexible shafts is axially connected, this is provided with a spur gear that in the second Shaft-associated spur gear is arranged meshing and that both waves guided at approximately right angles at the ends serve as axles supporting the wheels. As the waves drift away accordingly flexible, a corresponding specification is possible, so that practically a continuous connection of the drive motor up to the wheels can be realized. Advantageous is in particular the reduction of the individual parts and thus also a reduced manufacturing effort.  

To transfer the necessary driving forces looks the invention, the flexible shafts a diameter to have from 6 to 10 mm, preferably 8 mm, where long service life can be achieved what is particularly advantageous for golf carts. Furthermore can damage the shafts even with special problems be avoided because of the appropriate training the necessary collateral is available.

With the aim of getting the golf bag from the actual handcart to separate and thus especially for the winter time Handcarts have also been developed for use separately on which the golf bags can be strapped. Handcarts of this type can also be used advantageously with electrical Drives of the type according to the invention are equipped, for which the invention provides that the drive motor and the Battery or several batteries in the middle part of the vehicle stells and the waves running in the swivel arms are arranged. This training has the advantage, too equip so-called light cars with drives, which in particular is particularly advantageous on German golf courses because these are very often laid out on uneven terrain. Just in such a terrain, such an easy dare a load if he is equipped with rackets are balanced by an appropriate drive can be. The middle part of the chassis must be accordingly be designed to be stable in order to absorb the weight of the golf bag take or secure the necessary supporting forces. This The middle section is used to hold the drive motor and the Batteries expediently tubular, wherein due to the tubular design the wall of the agent can be limited in some cases. With that is then also motor and batteries can be secured at the same time, without further measures being necessary. In particular special, it is possible to secure these parts against To accommodate weather influences safely, even the flexible waves are advantageously accommodated that they are practically not visible at all, so that ensures an advantageous overall appearance of the handcart is.  

Wherever there is no tubular middle section having handcarts converted or with a drive the engine should be equipped afterwards Invention before that the drive motor in the middle part or is housed on the top of the middle section while the batteries on the middle part, preferably on the back are attached in the form of stick batteries and that the waves are arranged running in the swivel arms. Conceivable it is also a corresponding number of rod batteries to accommodate in the swivel arms, since these are usually tubular are trained to ensure the necessary stability Afford. Hence cavities for receiving the rod batteries and the necessary connection cables available. Drive motor and batteries can also be weather-proof ensures to be attached to this training because it can be accommodated in an appropriate housing, which is then to be attached as such to the middle part.

The invention is characterized in particular by that a hand cart is created, both as a golf cart and thus for the transport of golf equipment as well as for trans port can be used by any other small loads can, since it has both the required in a very compact design Battery as well as the drive motors can accommodate. In order to there is the possibility of such a handcart folded to transport in the car as well as in out folded condition on the golf course or on the street or the sidewalk. The assignment of the individual drive motors to the wheels and thus directly to the short axles does not exist only the ability to optimally drive the short axles, but also the wheels with the short axles and the integrated drive motors drive that as such in the self-supporting housing be accommodated. Due to the self-supporting housing then there is also the option of rechargeable Insert batteries in the respective spaces between individual golf course visits, for example  are easy to recharge in the garage. By using The entire structure of flexible shafts can go even further simplified and also the operation can be improved because the rotating shafts practically without influencing the User can be accommodated and because of that too the possibility is given, the so-called light cars to motorize for the corresponding solutions above were nonexistent.

Further details and advantages of the invention standes from the following description the associated drawing, in which a preferred embodiment Example with the necessary details and Items is shown. Show it:

Fig. 1 a usable as a golf cart carts in a perspective view,

Fig. 2 is a front view of the cart in sammengeklappten to state

Fig. 3 is a side view of the cart of FIG. 2,

Fig. 4 is a drive motor in a perspective view;

Fig. 5 shows the arrangement of flexible shafts as Ver binding agent between the drive motor and wheels,

Fig. 6 shows a section through a telescopic flexible shaft and

Fig. 7 is a light golf cart with electric drive.

The golf cart ( 1 ) shown in FIG. 1 is a housing ( 2 ) made of plastic parts, which can be pulled or guided by the golf player via the handle ( 3 ) and the rod ( 4 ). Gripped over the hand ( 3 ) and the rod ( 4 ), the chassis ( 5 ) with the parallel core ( 6 , 7 ) is moved so that the two links ( 8 , 9 ), the bearing arm ( 10 ) and the Short axis ( 11 ) with the wheels ( 12 , 13 ) attached to it can be pivoted into the housing ( 2 ), as can be seen in FIG. 2. This pivoting of the parallel link ( 6 , 7 ) on the rod ( 4 ) and the hand grip ( 3 ) takes place via a handlebar system ( 14 ), which is also assigned a locking hook ( 15 ), via which the rod ( 4 ) during the extended Condition can be determined so that at the same time the wheels ( 12 , 13 ) are held in the position shown in FIG. 1.

Several tubes are integrated in the housing ( 2 ) and serve as racket guides ( 17 , 18 ). A total of 14 such racket guides ( 17 , 18 ) are generally required. To accommodate the parallel link ( 6 , 7 ) as well as the handlebar system ( 14 ) and the rod ( 4 ) with the handle ( 3 ), a recess ( 19 ) is also provided in the housing ( 2 ), which after inserting or retracting these individual parts the cloth ( 20 ) are covered, which also Fig. 2 also clarifies.

The bottom ( 21 ) of the housing ( 2 ) is so stable that the bottom ( 21 ) also serves as a base plate ( 22 ) for the entire housing ( 2 ).

The wheels ( 12 , 13 ) are assigned drive motors ( 24 , 25 ), these drive motors rotating with the wheel ( 12 or 13 ), while the short axis ( 11 ) itself is fixed and accordingly rigid with the bearing arm ( 10 ) connected is.

Fig. 1 shows the driving position of the golf cart ( 1 ), with a slightly angular formation of rod ( 4 ) and parallel link ( 6 and 7 ) results in a convenient position because the weight is distributed somewhat evenly over the entire chassis ( 23 ).

Figs. 2 and 3 show the upstanding on the bottom case (2) according to the "retraction" of the handle (3) and the rod (4) and the parallel links (6, 7) and the wheels (12, 13). The wheels ( 12 , 13 ) standing on the floor ( 21 ) are still partially visible, while they are partly covered by the cloth ( 20 ) covering the recess ( 19 ). It is also clear here that the racket guides ( 17 , 18 ) are attached in each case in the edge region of the housing ( 2 ) in such a way that they do not impair the pivoting of the chassis ( 5 or 23 ).

In the bottom area (27) serving as a tarpaulin (28) Cloth (20) is equipped with a sort of recess again favors the unfolding of the tarpaulin (28) and on the other tert gripping the handle (3) erleich that for opening the Chassis ( 5 and 23 ) is required.

The battery ( 29 ) is also arranged inside the housing ( 2 ), as indicated in FIG. 3. The battery ( 29 ) is used to supply the drive motors ( 24 , 25 ). Such a drive motor ( 25 ) is shown in perspective in FIG. 4.

The battery ( 29 ) is secured in a guide ( 36 ) in the housing ( 2 ), so that it cannot fall out automatically, but on the other hand can be removed if necessary, without having to remove further securing brackets or the like. The battery ( 29 ) also has a charging cable ( 30 ) with plug ( 26 ), so that it can be recharged if necessary, for which purpose only the plug ( 26 ) must be inserted into a socket, for example in the garage. Suitable auxiliary devices can be used to ensure that the battery ( 29 ) is recharged evenly.

The drive motors ( 24 , 25 ) are assigned to the wheels ( 12 , 13 ), as can also be seen in FIG. 1, for example. They are integrated in the wheels ( 12 , 13 ), with a covering ( 33 ) being provided between the outer edges ( 31 , 32 ) and the short axes ( 11 ) to protect the intermediate space into a sealed cavity.

The drive motor ( 25 ), which can be seen in FIG. 4, works with a drive axis ( 34 ) running at right angles to the housing of the drive motor ( 25 ). The lines ( 35 ) denote the lines that lead to the battery ( 29 ) and to a switch housed in the handle ( 3 ).

Spikes ( 37 , 38 ) are visible on the wheels ( 12 , 13 ) or integrated therein, by means of which the adhesion of the wheels ( 12 , 13 ) to the ground can be specifically improved. With such a training there is then also the possibility to use the golf cart ( 1 ) as a traction device, for example to pull the golfer up a slope.

Fig. 5 shows the detail from a golf cart, here regarding the drive parts. The drive motor ( 24 ) is connected via flexible shafts ( 42 , 43 ) to the wheels ( 12 , 13 ). For this purpose, the shaft ( 42 ), which adjoins or represents the axial axis ( 45 ) of the drive motor ( 24 ), has a spur gear ( 44 ). This spur gear ( 44 ) on the shaft ( 42 ) meshes in a spur gear ( 46 ) which meshes on the shaft ( 43 ). Both have the same number of teeth, so that at the end ( 47 ) of both shafts ( 42 , 43 ) the same speed can be recorded. The necessary driving force is transmitted via the shafts ( 42 , 43 ) and the bevel gears ( 48 , 49 ) arranged at their ends ( 47 ) to the bevel gears ( 50 ), which on the short axes ( 11 ) of the gears ( 12 , 13 ) are attached. The arrows show the direction of rotation of the shafts ( 42 , 43 ) and the wheels ( 12 , 13 ). A perfect transfer of the driving forces from the drive motor ( 24 ) to the wheels ( 12 , 13 ) is achieved.

As shown in FIG. 5, the shafts ( 42 , 43 ) are arranged so that they can bend, so that they can also understand or follow the movements of the chassis ( 5 ), which is not shown here. Are due to the design of the chassis ( 5 ) extensions and shortening of the shafts ( 42 , 43 ) possible, so Fig. 6 shows a telescopic version, but which still ensures a perfect transmission of the torque.

For this purpose, the inner telescope ( 52 ), as shown in FIG. 6, is equipped with teeth ( 53 , 54 ) which mesh in the teeth ( 56 , 57 ) assigned to the outer telescope ( 55 ) or in the corresponding tooth gaps ( 58 ).

Fig. 7 shows a so-called light golf cart, the wheels ( 12 , 13 ) here also by moving the hand grip ( 3 ) and the rod ( 4 ) with the help of the swivel linkage ( 67 , 68 ) to abut the housing ( 2nd ) or the middle part ( 60 ) can be brought. For this purpose, the wheels ( 12 , 13 ) via swivel arms ( 61 , 62 ) with the central part ( 60 ) connected. The pivot arms (61, 62) are hollow, so that the indicated shafts (42, 43) in these swivel arms (61, 62) can be securely housed, they usually directly as axles for the wheels (12, 13 ) serve.

Only indicated here in Fig. 7, the transmission possibility between the shafts ( 42 , 43 ) and the drive motor ( 24 ).

It is particularly important here that the middle part ( 60 ) offers accommodation for both the drive motor ( 24 ) and for the battery ( 29 , 29 '), for which purpose the middle part ( 60 ) is preferably tubular. The drive motor ( 24 ) and the batteries ( 29 , 29 ') are designed accordingly or all parts are appropriately shaped appropriately, so that a combi nation is possible without problems. It is understood that in the central part ( 60 ) there are holders for the drive motor ( 24 ) and the batteries ( 29 , 29 '). This middle part ( 60 ) forms the backbone for the entire golf cart ( 1 ), with the necessary extensions ( 64 , 65 ) being arranged at the upper and lower ends in order to be able to attach the golf bag (not shown here). This golf bag is supported at the bottom on the support ( 66 ) and is fixed to the brackets ( 64 , 65 ) with the help of bands, brackets or the like, not shown here.

Instead of in the middle part ( 60 ) drive motor ( 24 ) and batteries ( 29 , 29 ') can be attached to the middle part ( 60 ) on the front and on the back ( 63 ) and vice versa.

The drive motor ( 24 ) is a DC gear motor for the golf cart ( 1 ) with the two wheels ( 12 , 13 ), which can be walked at 0.5 m / sec. should be accompanied. The nominal voltage is 12 volts, the nominal speed 40 to 50 rpm, the nominal torque 1.6 Nm, the starting torque 6.4 Nm, the torque with mixed current 1.15 Nm and the nominal power 8 to 10 watts.

All mentioned features, including those of the drawings alone to be removed, alone and in combination as he considered essential to the invention.

Claims (20)

1. Two-wheeled hand cart for transporting small loads, in particular golf carts with the golf bag that holds the golf cutlery and is designed as a self-supporting housing, the foldable chassis that can be steered by means of a raised handle and a battery-powered drive motor, characterized in that the housing ( 2 ) is located in the bottom area ( 27 ) one of the parallel links ( 6 , 7 ) guided and there on short axles ( 11 ) mounted wheels ( 12 , 13 ) including the handlebars ( 6 , 7 , 14 ) receiving recess ( 19 ) that the parallel link with the foldable rod ( 4 ) of the handle ( 3 ) are connected via a steering system ( 14 ) causing the pivoting-in process so that each wheel is assigned one or more rod-shaped drive motors ( 24 , 25 ) acting on the fixedly arranged short axle ( 11 ) and that the battery ( 29 ) is arranged above the wheels integrated in the housing and with a charging cable el ( 30 ) is equipped. 2. Handcart according to claim 1, characterized in that the drive motors ( 24 , 25 ) are arranged at right angles to the short axis ( 11 ) in the wheel ( 12 , 13 ). 3. Handcart according to claim 1 and claim 2, characterized in that the wheels ( 12 , 13 ) have a covering ( 33 ) extending from the outer edges ( 31 , 32 ) to the short axis ( 11 ). 4. Handcart according to claim 3, characterized in that the covering ( 33 ) is detachable. 5. Handcart according to claim 1, characterized in that the housing ( 2 ) is formed by a light metal tube frame which is covered with a cloth ( 20 ) and z. B. divided into the battery ( 29 ) receiving areas. 6. Handcart according to claim 1, characterized in that the parallel link ( 6 , 7 ) and the steering system ( 14 ) and the rod ( 4 ) as the lines ( 35 ) receiving hollow tubes are formed. 7. Hand cart according to claim 1 and claim 6, characterized in that the bearing arm ( 10 ) between the parallel link ( 6 , 7 ) and the short axis ( 11 ) fixed therein is assigned a rotary union. 8. Handcart according to claim 1 and claim 6, characterized in that the drive motor ( 24 , 25 ) in the bearing arm ( 10 ) inte grates and the short axis ( 11 ) with the wheels ( 12 ; 13 ) is designed to rotate. 9. Hand trolley according to claim 1, characterized in that the battery ( 29 ) in a guide ( 36 ) in the housing ( 2 ) is mounted lockable. 10. Hand trolley according to claim 1, characterized in that the bottom ( 21 ) of the housing ( 2 ) is designed as a base plate ( 22 ). 11. Hand trolley according to claim 1, characterized in that the wheels ( 12 , 13 ) are studded ( 37 , 38 ). 12. Two-wheeled handcart for transporting small loads, in particular golf carts with the golf bag that holds the golf cutlery and is designed as a self-supporting housing, the retractable chassis that can be steered by means of a raised handle, with parallel steering or swivel arms and a battery-powered drive motor housed in the housing, characterized in that that the drive motor ( 24 ) via movable and bendably formed shafts ( 42 , 43 ) with the wheels ( 12 , 13 ), preferably with the fixedly arranged short axles ( 11 ), which is displaceably guided to the parallel link core ( 6 , 7 ) and are releasably connected to the drive motor. 13. Hand trolley according to claim 12, characterized in that the axial axis ( 45 ) of the drive motor ( 24 ) with one of the flexible shafts ( 42 ) is directly connected to which a spur gear ( 44 ) is assigned, in which one of the second shaft ( 43 ) assigned spur gear ( 46 ) and that both shafts at the other end ( 47 ) are equipped with bevel gears ( 50 ) corresponding to the short axes ( 11 ) and corresponding bevel gears ( 48 , 49 ). 14. Hand trolley according to claim 13, characterized in that the spur and bevel gears ( 44 , 46 , 48 , 49 , 50 ) have the same number of teeth or the same pitch circles with the same module. 15. Hand cart according to claim 12, characterized in that the shafts ( 42 , 43 ) are telescopic. 16. Hand trolley according to claim 15, characterized in that the shafts ( 42 , 43 ) in the insertion area with teeth ( 53 , 54 , 56 , 57 ) or tooth gaps ( 58 ) are provided. 17. Hand cart according to claim 12, characterized in that the axial axis ( 45 ) of the drive motor ( 24 ) with one of the flexible shafts ( 42 ) is axially connected, which is provided with a spur gear ( 44 ) which in that of the second shaft ( 43 ) associated spur gear ( 46 ) is arranged in a meshing manner and that both shafts are guided at approximately right angles and serve as axles supporting the wheels ( 12 , 13 ). 18. Hand trolley according to claim 17, characterized in that the flexible shafts ( 42 , 43 ) have a diameter of 6 to 10 mm, preferably 8 mm. 19. Hand trolley according to claim 12, characterized in that the drive motor ( 24 ) and the battery ( 29 ) or several batteries in the central part ( 6 ) of the chassis ( 5 ) and the shafts ( 42 , 43 ) in the swivel arms ( 61 , 62 ) are arranged running. 20. Handcart according to claim 12, characterized in that the drive motor ( 24 ) is housed in the central part ( 60 ), that the batteries ( 29 ) on the central part, preferably on the back ( 63 ) in the form of rod batteries are introduced and that the shafts ( 42 , 43 ) are arranged to extend in the swivel arms ( 61 , 62 ).