DE202012105019U1 - Motorized three-wheeled golf trolley - Google Patents

Abstract

Motorized three-wheeled golf trolley (1) comprising a chassis (2) having a floor frame (21) and a steering linkage (20), which carries a steerable front wheel (4) and two motor-driven rear wheels (5), characterized in that the floor frame ( 21) carries a standing platform (230) and / or a seat (6) for transporting a user in its longitudinal direction extending in the direction of straight travel behind the middle rear area and that in the area of the standing platform (230) a track width adjustment device for reducing the track width of the rear wheels ( 5) is arranged in the non-use state and increasing the gauge in use.

Description

The invention relates to a motorized three-wheeled golf trolley with a bottom frame and a steering linkage having a chassis carrying a steerable front wheel and two motor-driven rear wheels.

A motorized golf trolley (golf cart, caddy cart) of this type is in the DE 103 53 521 A1 disclosed. In this known golf trolley, a leading support wheel are arranged on the front of a floor frame and two rear wheels driven on the rear of an axle. Furthermore, a collapsible support column is articulated in the surrounding area of the rear wheel axle, which forms a trailer for an obliquely forward folded golf bag and in the non-use state is folded down to the front on the floor frame. To move the golf trolley, the user only needs to operate the actuating means for engine operation and steer the trolley via a handlebar mounted on the handlebar, but he goes behind the golf trolley and often has to travel long distances. This can be difficult for some people.

Another three-wheeled golf trolley with motor drive, which is steered by a behind-going user, is in the DE 20 2005 017 020 U1 shown.

In the DE 38 77 526 T2 (German part of the European patent EP 0 317 309 B1 ) is a collapsible three-wheeled golf trolley extruded chassis parts shown.

The DE 60 2005 005 707 T2 shows a drive unit for driving two wheels of a golf cart with an electric motor.

In addition, golf carts are also known, which are designed for the transport of people, such. For example, a trolley called Scoover (Internet address www.scoover.eu). These are four-wheeled and relatively complex. A similar four-wheeled golf trolley with standing platform for a user is in the DE 20 2009 013 273 shown. In the DE 20 2011 004 903 U1 It is proposed to carry out the transport of the user, the length and the inclination of the golf bag carrier axis adjustable. This can lead to difficulties in maneuverability.

The present invention has for its object to provide a golf trolley of the type mentioned above, which offers increased ease of use.

This object is achieved with the features of claim 1. It is provided that the bottom frame in its pointing in the straight direction longitudinal extent behind the middle rear area carries a standing platform and / or a seat for transporting a user and that in the area of the standing platform a track width adjustment device to reduce the track width of the rear wheels in the non-use state and enlarge the Track is arranged in use.

This design of the golf trolley results in a structurally advantageous space-saving design with good handling including production of the transport function.

Advantageous design variants are that the bottom frame is provided with an adjustment and extendable by means of this for extending in the longitudinal direction of the trolley and that the adjustment is designed for adjusting by hand or is provided with an adjustment for automatic adjustment after triggering an adjustment by the user , The automatic adjustment by means of the adjustment can be done simply by pressing a button and automatic control of the adjustment.

In this case, an advantageous embodiment is that the adjusting device for the adjustment has a lifting unit lying in the straight-ahead driving direction, in particular in the vertical center longitudinal plane.

Advantageous embodiments of the adjustment are formed in that the lifting unit has at least one adjusting spindle, a rack, a pneumatic or hydraulically operable in reciprocating piston / cylinder assembly or a linear motor.

Other design features which are advantageous for use are that the track width of the two rear wheels when extending the floor frame is widenable and can be reduced when the floor frame is pushed together, or the track width on the one hand and the floor frame in the longitudinal direction can be adjusted independently of one another on the other hand.

In this case, an embodiment which is advantageous for the construction consists in that the track width adjusting device has an adjusting mechanism which is designed to adjust the standing platform and at the two lateral end portions of which the rear wheels are attached.

Further advantages for the structure and function result from the fact that the two rear wheels are provided with separately assigned electrically driven wheel motors, in particular hub motors.

An advantageous embodiment for the operation is that for operating the wheel motors, an electrical energy source and for driving the wheel motors, a control device is present.

Various design variants for an advantageous adjustment function consist in that the standing platform has a plurality of sub-plates, which are adjustable relative to each other horizontally or vertically by means of the adjusting mechanism.

An advantageous construction is achieved in that the floor frame is T-shaped and comprises a divisible longitudinal traverse, in particular in the vertical central longitudinal plane, as well as with this directly or via intermediate links connected supporting parts of the gauge adjuster.

In this case, it is advantageously provided for the mode of operation and the construction that the carrying parts are at least partially movably mounted relative to the longitudinal traverse.

For a simple adjustability with a stable structure further contribute to the measures that the adjustment mechanism has a cooperating with the supporting parts deflection mechanism by means of which the standing platform is spatially adjustable out of a horizontally spanned in track width direction and longitudinal extension direction x-y ground plane.

An advantageous embodiment also results from the measures that, at least by means of some of the supporting parts, a platform support unit carrying the support platform is formed, which is configured with a plurality of support elements articulated in vertical articulation axes, which are pivotable relative to each other in a horizontal ground plane.

For the construction and the function, the measures are also advantageous in that the standing platform with the platform support unit and with the longitudinal cross-piece is articulated via horizontal, horizontal hinge axes directed parallel to the longitudinal extent.

For the accommodation or transport of the golf trolley when not in use is advantageous that the steering linkage has an obliquely backward upward steering column in the operating condition with attached steering rod, wherein the steering column is folded towards the bottom frame.

The invention will be explained in more detail by means of embodiments with reference to the drawings. Show it:

1A a motorized golf trolley in a schematic side view with the floor frame pushed together and the user behind,

1B the golf trolley after 1A with extended floor frame and on a standing platform with transported user,

1C the golf trolley after 1A with the bottom frame removed and on a seat with the user transported,

2A the golf trolley after 1A in the collapsed state in an enlarged lateral view,

2 B the golf trolley after 2A in plan view of the floor assembly with wheels and floor frame,

3A the golf trolley after 2A in the extended state,

3B the golf trolley after 3A in plan view of the floor assembly with extended bottom frame and track extension in the area of the rear wheels,

4A and 4B Side views of another embodiment of a golf trolley in a collapsed and exploded with respect to the longitudinal direction,

5A and 5B Top views of the trolley after the 4A and 4B in the collapsed and extended state,

6A an enlarged view of the golf trolley after 5B .

6B a top view of the golf trolley in a further embodiment in the longitudinal and in the gauging direction exploded state,

7 a perspective view of the golf trolley after 6B obliquely from behind and at the top in an exploded state,

8th another perspective view of the golf trolley after 6B more from the back,

9 another perspective view of the golf trolley after 6B from below and diagonally behind,

10 another perspective view of the golf trolley from the bottom more from the back,

11 another perspective view of the golf trolley after 6B from the beginning,

12 another perspective view of the golf trolley after 6B from behind,

13 another perspective view of the golf trolley after 6B , but in the contracted state of obliquely behind and above,

14 the golf trolley after 13 in perspective from above,

15 the golf trolley after 13 in perspective from below, laterally,

16 the golf trolley after 13 in perspective from below, more from the front and

17 another perspective view of the golf trolley after 13 from the rear side.

1A shows a golf trolley 1 with a chassis 2 holding a floor group with three on a floor frame 21 coupled wheels, namely a steered front wheel 4 (For example, formed from two partial wheels with a small distance) and two laterally arranged with respect to a pointing in the straight-ahead driving center longitudinal axis rear wheels 5 of which, as a result of the lateral representation, only the rear wheel facing the observer can be seen. In the front area of the floor frame 21 is a steering linkage 20 with an obliquely rearward upward steering column 201 with a handlebar to be handled by the user 202 coupled in the upper area. The steering column 201 , at the lower portion of a suspension for the front wheel 4 is attached, also serves to accommodate an accessory bag 3 for the golf equipment. The rear extendable floor frame 21 is in the in 1A shown state pushed together, so that the handlebar 202 via a (imaginary) pointing in the direction of gravity vertical in the longitudinal direction over the rear wheels 5 which protrudes to the rear or over or at least slightly before the vertical over the rear wheels 5 so that the user can comfortably carry the golf trolley while walking. To easily move the golf trolley 1 this is by means of a motor 7 driven (see. 6 ), preferably on the rear wheels 5 acts and z. B. in the region of a rear axle between the rear wheels 5 or in the wheels itself is arranged as a hub motor. As 1A further shows, the bottom group is with one on the bottom frame 21 supported standing platform 230 Mistake.

1B shows the extended state of the golf trolley 1 , where the bottom frame is extended to the rear so far that the user is comfortable on the standing platform 230 with its center of gravity slightly in front of the rear axle 50 or at least above it standing on the golf trolley 1 ride along and maneuver this. The steering linkage 20 can in the area of the longitudinal column 201 and / or the handlebar 202 be designed according to height adjustable. The location of the rear wheels 5 in the collapsed state is in 1B dashed lines.

As 1C may instead of or in addition to the standing platform 230 in the region of the rear axle, advantageously with the center of gravity just before the same, a seat 6 for the user z. B. releasably attached and on the floor frame 21 be supported so that the user sitting on the golf trolley 1 can ride.

2A shows the golf trolley 1 in the collapsed state of the floor frame 21 in enlarged side view while 2 B a top view of the bottom group of the golf trolley 1 with the floor frame 21 and the three wheels, namely the steered front wheel 4 and the two right and left with respect to the central longitudinal axis and vertical central longitudinal plane disposed rear wheels 5 shows. The floor frame 21 has substantially the shape of an isosceles, front narrowing trapezoid or alternatively an isosceles triangle tapering forward, the angle of the two side legs with respect to the central longitudinal axis is the same size as out 2 B evident. The two rear wheels 5 are in the illustrated embodiment via a (in plan view) at right angles to the central longitudinal axis extending physical rear axle 50 coupled together. The back ends of the side legs of the floor frame 21 are z. B. articulated and / or mechanically buffered by means of an elastic element on the rear axle 50 appropriate. The standing platform 230 is largely in front of the rear axle 50 and is shown in the Fig. Transparent.

As 2A is the longitudinal column 201 via a joint part 200 for steering the front wheel with the ground frame 21 coupled. Furthermore, the steering linkage 20 with the steering column 201 to the floor frame 21 be designed hinged down, the execution has a suitably trained Abklappmechanik.

Essential design feature of the present golf trolley 1 is the extensibility or adjustability of the bottom group to the rear, as in connection with the 1A and 1B already mentioned. For easy adjustment, the bottom group with an adjustment 220 provided, like the 2A and 2 B and also 3A and 3B continue to show. The adjusting device 220 is arranged in the embodiment shown in the region of the central longitudinal plane in the region of a longitudinal traverse and has a lifting unit with an adjustment 221 and an adjusting drive acting on this 222 on. The adjustment part 221 includes z. As an adjusting spindle or rack, during the adjustment 222 advantageous is an electric motor. Alternatively, as adjustment also z. B. be installed a pneumatically or hydraulically operated Koben- / cylinder unit or a linear electric motor. The adjustment part 221 and / or the adjustment drive 222 can be encapsulated by a housing.

In the embodiment shown, the two side legs of the floor frame 21 also composed with at least two relatively movable side panels, namely a front side panel 210 and a relative to this telescopically displaceable rear side part 211 , like from the 3A and 3B more clearly visible.

Another special design of the golf trolley 1 is that the track width of the rear wheels in the extended state is increased. In the embodiment shown, this is in the region of the rear axle 50 in this or outside of an adjustment 51 with a motor-driven drive unit 52 intended. The track extension contributes to the transport of the user significantly to the tilt stabilization and driving safety.

In the embodiment shown, the angle between the side parts of the floor frame 21 rigidly predetermined by z. B. the two front side panels 210 firmly attached to each other and to a support member of the floor assembly. When removing or adjusting the floor frame 21 to the rear, this automatically increases the track width when the rear wheels 5 or the rear axle 50 coupled with the rear ends of the side legs, and when pushed together, a reduction of the track width. It can on a separate drive unit 52 between the rear wheels 5 be waived. An adjustment unit 51 with appropriately designed mechanics can contribute to a smooth, safe gage adjustment.

The 4A to 6A show a further embodiment of the construction of a golf trolley 1 in lateral view ( 4A and 4B ) and in plan view of the floor group ( 5A . 5B and 6A ), wherein corresponding parts are provided with the same reference numerals as in the previously described embodiment.

As in particular the plan views of the 5A . 5B and 6A show, the bottom frame is formed of the central, lying in the vertical central longitudinal plane of the longitudinal beam and a right-angled thereto Ach unit, at the ends of the rear wheels 5 are arranged symmetrically to the central longitudinal axis. The longitudinal beam is in this case constructed telescopically from a plurality of longitudinal segments, by means of the adjusting device 220 with adjustment part 221 and adjustment drive 222 expandable and zusammenschiebbar are composed. Again, the adjustment 220 Have one or more adjusting spindles, one or more racks or at least one piston / cylinder unit with pneumatic or hydraulic actuation. As in particular the enlarged view in 6A shows, the longitudinal beam is stably mounted on the axle unit, wherein the axle unit in turn comprises a plurality of telescopically adjustable axle segments, whereby the track width adjustment of the rear wheels described above 5 is possible. The adjustment drive 222 can either in the rear of the longitudinal beam or in the front region of the longitudinal beam, for example near the point of connection of the steering linkage 20 be arranged.

The adjustment of the track is done either via the adjustment 222 and a coupling mechanism with deflection gear, the transmission parts 53 includes. Alternatively, the gage adjustment via its own drive unit 52 be made as described in connection with the previous embodiment. The adjustment unit 51 has for the gage adjustment in both cases adjustment means such. B. adjusting spindles on.

How out 6A Furthermore, it can be seen that in the axle unit is a motor 7 arranged, via a telescopically adjustable drive axle on the rear wheels 5 acts. In addition, a differential gear is arranged in the axle unit, so that the golf trolley 1 can easily perform steering maneuvers. Instead of an engine 7 in the axle unit can the rear wheels 5 be provided with hub motors, which can be controlled by means of the control device. The motor 7 is preferably designed as an electric motor and is powered by a battery or a rechargeable battery, including z. B. a charge can be provided via photovoltaic elements.

The standing platform 230 can z. B. have two parts and have two superimposed sliding plate parts, so that they widened or narrowed accordingly with the gage adjustment.

6B shows a further embodiment of the golf trolley. Here is the standing platform 230 also designed in several parts, with the rear section of the longitudinal beam on the (in the direction of travel) right side a right sub-platform 230a and on the left a left sub platform 230b are stably coupled by means of fasteners. The right and left sub-platform 230a . 230b are in turn each from a lying to the longitudinal beam first sub-plate 231 and a second sub-plate remote from the longitudinal traverse 232 formed along their mutually facing, longitudinally facing edges over a horizontal, parallel to the central longitudinal plane of the golf trolley extending hinge axis 233 are hinged together. Furthermore, the first two partial plates 231 via another, horizontal hinge axis running parallel to the vertical center longitudinal plane of the golf trolley 233. ' hinged to the rear section of the longitudinal beam. This hinge axle 233. ' is mounted for stabilization in a displaceable on the penultimate telescopic section of the longitudinal beam support bearing in the longitudinal direction. Furthermore, the outer side edges of the second sub-plate remote from the longitudinal cross-piece are 232 via a joint axis extending parallel to the central longitudinal plane 233 '' at one the standing platform 230 receiving platform carrying unit 240 (see. 7 ff ) hinged. The rear wheels 5 are on side beams 241 the platform carrying unit 240 rotatably mounted and equipped with wheel motors, in particular hub motors, which are individually controlled but matched to each other by means of the control device under supply from an electrical power source or regulated.

As the 7 to 17 further show, the platform carrying unit 240 except the side members 241 with these over vertical joint axes 246 coupled and articulated for pivoting in the horizontal xy plane further coupling arms on, namely front coupling carrier 242 as well as rear coupling carrier 245 , where the rear coupling carrier 245 in turn, also by means of vertical hinge axes 246 articulated coupling carrier parts 243 . 244 put together. At theirs from the side beams 241 remote end regions facing the longitudinal beam are the front and rear coupling beams 242 . 245 via further vertical joint axes 246 Stably connected to the rear portion of the longitudinal beam, so that high weight forces can be absorbed. The side supports 241 , Coupling carrier 242 . 245 or coupling carrier parts 243 . 244 are made in the vertical direction particularly stable, ie for large weight-bearing profiles, such as U-profiles, in which the U-web is oriented in the vertical direction, C-profiles or rectangular profiles or profiles with square or round cross-section, the profiles preferably formed as hollow profiles. The relatively longitudinally displaceable or telescopable sections of the longitudinal traverse consist of profiles of high load capacity for receiving even heavy persons, with a good displacement is guaranteed.

In the in the 6B to 17 embodiment shown are the first and second partial plates 231 . 232 the two sub-platforms 230a . 230b relative to a horizontal xy plane (spanned in the longitudinal direction and track width direction of the golf trolley) in the vertical direction (z-direction) about the horizontal hinge axis connecting them 233 pivoted up. This is done by means of the relative to the longitudinal beam pivotable front and rear coupling carrier 242 and 245 who are also the side bearers 241 take. For this purpose, in the present embodiment, two parts of the coupling carrier parts 243 . 244 formed rear coupling carrier 245 with their ends facing the longitudinal beam in the rear region of the last section of the longitudinal beam over the respective vertical joint axes 245 firmly attached. The integral in the present embodiment front coupling carrier 242 on the other hand, with their ends facing the longitudinal beam, they are above the respective vertical joint axes 246 stably fixed to the rear end portion of the second-last portion of the longitudinal beam. The two of the longitudinal cross-straightened ends of the front and the rear coupling carrier 242 . 245 are on the side in the longitudinal direction of the golf trolley extending side rails 241 articulated coupled. If now the longitudinal beam z. B. by means of the adjustment 222 pushed together, are also the rear and the penultimate section of the longitudinal beam with the attached vertical axes of articulation 246 and thus the relevant ends of the front and rear coupling carrier 242 and 245 pushed together, causing the front coupling carrier 242 and rear coupling carrier 245 to pivot to the longitudinal beam and accordingly the side support 241 with the rear wheels 5 in the manner of a parallelogram four-bar system (with the special feature that the rear coupling carrier 245 from two coupling carrier parts 243 . 244 is composed) are moved inwardly in the direction of the longitudinal beam. At the same time by this adjustment mechanism, the two sub-platforms 230a and 230b with the respective first and second part plate 231 . 232 with at the connecting horizontal hinge axis 233 pivoted upwards, as z. B. the 11 (or 12 ) in the apart Operating state and 17 , clearly visible when pushed together.

With the adjusting mechanism of the gage adjusting device thus formed, a stable, well-functioning structure results for high payloads. To the installation process of the partial plates 231 . 232 to favor, may be arranged under these a short run-on slope or a casserole or the like. Which initiates the Aufschwenkbewegung when pushing together the sections of the longitudinal beam.

It should be noted that the two sub-platforms 230a . 230b can also be formed from more than two partial plates. The adjustment mechanism with the coupling carriers is then adjusted accordingly.

For easy operation of the adjusting device 220 by means of the adjustment drive 222 and / or the adjustment unit 51 by means of the drive unit 52 is an electrical control unit (not shown) via which the adjustment when pulling or pushing together by the user z. B. can be triggered by pressing a button. The control unit may form part of the aforementioned control device.

It is also conceivable, the adjustment 220 or the adjustment unit 51 to perform as a manually operable adjustment mechanism.

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 10353521 A1 [0002]
• DE 202005017020 U1 [0003]
• DE 3877526 T2 [0004]
• EP 0317309 B1 [0004]
• DE 602005005707 T2 [0005]
• DE 202009013273 [0006]
• DE 202011004903 U1 [0006]

Claims (15)

Motorized three-wheeled golf trolley ( 1 ) with a floor frame ( 21 ) and a steering linkage ( 20 ) having chassis ( 2 ), which has a steerable front wheel ( 4 ) and two motor-driven rear wheels ( 5 ), characterized in that the floor frame ( 21 ) in its pointing in the direction of straight-ahead longitudinal extension behind the middle rear area a standing platform ( 230 ) and / or a seat ( 6 ) for transporting a user and that in the area of the standing platform ( 230 ) a gage adjustment device for reducing the track width of the rear wheels ( 5 ) is arranged in the non-use state and increasing the gauge in the use state. Golf trolley according to claim 1, characterized in that the floor frame ( 21 ) with an adjusting device ( 220 ) is provided and extendable by means of this for extending in the longitudinal direction of the trolley and that the adjusting device ( 220 ) is designed for adjusting by hand or with an adjusting drive ( 222 ) is provided for automatic adjustment after triggering an adjustment by the user. Golf trolley according to claim 2, characterized in that the adjusting device ( 220 ) has a lying in straight-ahead driving direction, in particular in the vertical central longitudinal plane lifting unit. Golf trolley according to claim 3, characterized in that the lifting unit has at least one adjusting spindle, a rack, a pneumatically or hydraulically operable in reciprocating piston / cylinder assembly or a linear motor. Golf trolley according to one of the preceding claims, characterized in that by means of the track width adjustment device, the track width of the two rear wheels ( 5 ) when removing the floor frame ( 21 ) and when pushing together the floor frame ( 21 ) is reducible or that the gauge on the one hand and the bottom frame ( 21 ) are longitudinally independently adjustable on the other hand. Golf trolley according to claim 5, characterized in that the gage adjusting device has an adjusting mechanism which is used for adjusting the standing platform ( 230 ) is formed and at the two lateral end portions of the rear wheels ( 5 ) are mounted. Golf trolley according to one of the preceding claims, characterized in that the two rear wheels ( 5 ) are provided with separately associated electrically driven wheel motors, in particular hub motors. Golf trolley according to claim 7, characterized in that for operating the wheel motors an electrical energy source and for driving the wheel motors, a control device is provided. Golf trolley according to one of claims 6 to 8, characterized in that the standing platform ( 230 ) several partial plates ( 231 . 232 ), which are adjustable relative to each other horizontally or vertically by means of the adjusting mechanism. Golf trolley according to one of claims 6 to 9, characterized in that the floor frame ( 21 ) Is T-shaped and comprises a divisible longitudinal beam, in particular in the vertical central longitudinal plane, as well as with this directly or via intermediate members connected supporting parts of the gauge adjuster comprises. Golf trolley according to claim 10, characterized in that the supporting parts are mounted at least partially movable relative to the longitudinal beam. Golf trolley according to claim 10 or 11, characterized in that the adjusting mechanism has a cooperating with the supporting parts deflecting mechanism, by means of which the standing platform ( 230 ) is spatially upwardly adjustable from an xy-ground plane spanned horizontally in track width direction and longitudinal direction. Golf trolley according to one of claims 10 to 12, characterized in that at least by means of some of the supporting parts, a standing platform ( 230 ) carrying platform carrying unit ( 240 ) formed with a plurality of vertical axes of articulation ( 246 ) is designed articulated support elements, which are pivotable relative to each other in a horizontal ground plane. Golf trolley according to claim 13, characterized in that the standing platform ( 230 ) with the platform carrying unit ( 240 ) and with the longitudinal beam via horizontal, parallel to the longitudinal direction directed horizontal pivot axes ( 233. ' . 233 '' ) is articulated coupled. Golf trolley according to one of the preceding claims, characterized in that the Steering linkage ( 20 ) a in the operating state obliquely backwards upwards steering column ( 201 ) with attached handlebar ( 202 ), wherein the steering column ( 201 ) to the floor frame ( 21 ) is folded down.

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