WO2002074592A1 - Frein destine a un vehicule - Google Patents

Frein destine a un vehicule Download PDF

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Publication number
WO2002074592A1
WO2002074592A1 PCT/AU2002/000324 AU0200324W WO02074592A1 WO 2002074592 A1 WO2002074592 A1 WO 2002074592A1 AU 0200324 W AU0200324 W AU 0200324W WO 02074592 A1 WO02074592 A1 WO 02074592A1
Authority
WO
WIPO (PCT)
Prior art keywords
braking system
operating mechanism
foot
operating
handle
Prior art date
Application number
PCT/AU2002/000324
Other languages
English (en)
Inventor
John Phillip Browne
Victor John Franklin
Original Assignee
Hilltrolley Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilltrolley Pty Ltd filed Critical Hilltrolley Pty Ltd
Publication of WO2002074592A1 publication Critical patent/WO2002074592A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0036—Castors in general; Anti-clogging castors characterised by type of wheels
    • B60B33/0039—Single wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
    • B60B33/0049—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being horizontal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
    • B60B33/0057—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being offset from swivel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
    • B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
    • B60B33/0068—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
    • B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
    • B60B33/0073—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being symmetrical to wheel or wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
    • B60B33/0089—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism acting on the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
    • B60B33/0092—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism actuated remotely, e.g. by cable or electrically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/02—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism
    • B60B33/021—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism combined with braking of castor wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/02—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism
    • B60B33/023—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism by using friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/02—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism
    • B60B33/026—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism being actuated remotely, e.g. by cable or electrically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/12—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action
    • B60T1/14—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting otherwise than by retarding wheels, e.g. jet action directly on road
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/04—Braking mechanisms; Locking devices against movement
    • B62B5/0438—Braking mechanisms; Locking devices against movement hand operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/04—Braking mechanisms; Locking devices against movement
    • B62B5/049—Braking mechanisms; Locking devices against movement locking against movement by contacting the floor or a wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/04—Braking mechanisms; Locking devices against movement
    • B62B5/049—Braking mechanisms; Locking devices against movement locking against movement by contacting the floor or a wall
    • B62B5/0495—Braking mechanisms; Locking devices against movement locking against movement by contacting the floor or a wall by contacting a wall

Definitions

  • This invention relates vehicles, and in particular to hand-operated carts, and a braking system therefor. This invention has particular application to a braking system for shopping trolleys.
  • hand-operated carts do not have any type of braking system to check the uncontrolled movement of the cart when unattended on a sloping surface.
  • One type of hand-operated cart which does have a braking system is a baggage trolley utilised at some airports to allow passengers to convey their luggage. With such a cart, the wheels are directionally fixed and the braking system acts directly on the wheels.
  • Hand-operated carts such as shopping trolleys have wheels employed are castors, which can swivel to any direction so that the direction of movement of the shopping trolley is not fixed.
  • braking systems for hand-operated carts such as those employed in airport luggage trolleys cannot be easily employed on carts with swivelling wheels due to the complexities of providing a mechanism which can act on wheels which are able to swivel.
  • This invention seeks to provide a braking system for a vehicle such as a hand- operated cart, and in particular for a shopping trolley having castor wheels, although it will be appreciated that the braking system may also be applied to such vehicles which do have wheels which are directionally fixed.
  • a braking system for a vehicle having at least one foot having a substantially flat foot surface provided to engage the ground by friction, said at least one foot being connected to an operating mechanism, said operating mechanism being moveable between a raised position in which each said at least one foot is raised clear of the ground contacting plane of the wheels of said vehicle, and a lowered position in which said at least one footing contacts the ground to act as a brake for said vehicle.
  • said at least one footing is connected to the operating mechanism for limited pivotal movement about a pivot point whereby said at least one foot is pivotal slightly to present an edge of said foot surface in response to lateral urging and thereby increase the frictional engagement of the foot with the ground.
  • said pivot point includes some lateral play to further improve the frictional engagement of the footing with the ground.
  • the operating mechanism is biased toward said lowered position by a spring.
  • the operating mechanism includes a leg portion which acts axially in moving the foot between said raised position and said lowered position
  • the spring is accommodated in a housing and said leg portion passes though the housing along its axial extent.
  • the housing may cylindrical, rectangular or any other appropriate configuration in cross-section.
  • the operating mechanism includes a latch mechanism for releasably retaining the operating mechanism in said raised position.
  • said latch mechanism includes a notch located in the leg portion which is coincident with and engages with a lip on the housing when in the latched condition.
  • said notch is aligned facing toward the centre of gravity of the braking system.
  • the arrangement of the latch mechanism is fragile, so that excessive vibration will release said latch mechanism thereby to cause the operating mechanism to be urged towards said lowered position.
  • said braking system includes an operating handle connected with said operating mechanism, said operating handle being operable to urge the operating mechanism toward the raised position and so release the brake.
  • the vehicle is a hand-propelled cart such as, for example, a shopping trolley.
  • said operating handle is located in proximity to a main handle by which said vehicle is pushed.
  • the operating handle for the braking system is so located with respect to the main handle of the vehicle that a user holding the main handle can manipulate the operating handle to actuate the operating mechanism.
  • the operating handle includes a handle portion positioned alongside the main handle whereby the handle portion can be grasped and squeezed towards the main handle to cause the operating mechanism to move from the lowered position to the raised position.
  • said braking system includes a lifting device associated with said operating mechanism and adapted to be deflected when said vehicle telescopingly receives from the rear another vehicle of the same type, said lifting device being aligned to be deflected by said another vehicle, and so move said operating mechanism to said raised position and thereby release the brake on said vehicle.
  • the lifting device is formed integrally with the operating handle. In such a case, the lifting device may comprise a projection on the operating handle.
  • Figure 1 is a rear perspective view of a shopping trolley incorporating a braking system according to a first embodiment
  • Figure 2 is a side view of the trolley, with the braking system being shown in a raised (inoperative) condition;
  • Figure 3 is a view similar to Figure 2, with the exception that the braking system is shown in a lowered (operative) condition;
  • Figure 4 is a sectional side elevational view of an operating mechanism forming part of the braking system, the operating mechanism being shown in a lowered position;
  • Figure 5 is a view similar to Figure 4, with the exception that the operating mechanism is shown in a raised position;
  • Figure 6 is a further sectional elevational view of the operating mechanism
  • Figure 7 is a schematic perspective view illustrating an operating handle forming part of the braking system being grasped by a user who is also holding the main handle of the shopping trolley;
  • Figure 8 is a schematic sectional side elevational view of an operating mechanism for a braking system according to a second embodiment, the operating mechanism being shown in a lowered condition; and Figure 9 is a view similar to Figure 8, with the exception that the operating mechanism is shown in a raised condition.
  • the embodiment is directed to a braking system 10 for a vehicle in the form of a shopping trolley 11.
  • the shopping trolley 11 has four castor type wheels 13 which are mounted for rotation about vertical axes, to allow the shopping trolley 11 to be moved in any direction by the user.
  • the wheels 13 are mounted to a chassis 15, to which is secured near the rear thereof a basket 17.
  • the basket 17 has a sloping top 18 and a rear portion 19 which is pivotally mounted about a lateral pivot 21 so that the rear portion 19 can be raised to a level commensurate with the top of the basket 17, allowing the front of another basket 17 of another shopping trolley 1 1 to be telescopingly received from the rear within the basket 17 of the shopping trolley 11 , as is well known with shopping trolleys.
  • a main handle 23 is provided so that a user can push the shopping trolley 11.
  • the main handle 23 includes a elongate grip portion 24 supported at its ends between two supports 25.
  • Each support 25 includes a rod 26 which is integral with the basket 17 and which is configured to provide an upper support rail 27 and a lower support rail 28.
  • the braking system 10 includes a foot 29 and an associated operating mechanism 30, located on each side of the shopping trolley 1 1.
  • Each operating mechanism 30 is operable for movement between a raised position in which its respective foot 29 is clear of the ground on which the trolley 11 is supported for movement, and a lowered position in which the respective foot 29 is in frictional engagement with the ground 12.
  • Each foot 29 has a substantially flat foot surface 31 of generally square construction; that is, it has a generally square footprint.
  • the foot surface 31 is bounded by a peripheral edge 33 and includes a central recess 34 in the form of a channel.
  • Each operating mechanism 30 includes a leg portion 35 on the lower end of which the foot 29 is supported. More particularly, the foot 29 is pivotally mounted onto the lower end of the leg portion 35 at pivot point 37 having a pivot axis 39 generally transverse to the fore-and-aft axis of the trolley 11 ; that is, generally transverse to the direction of travel of the trolley.
  • the foot 29 includes a rigid upper plate 41 and a friction pad 42 mounted on the underside of the plate 41 , as best seen in Figure 6.
  • the upper plate 41 locates directly beneath but in spaced apart relationship to the underside 43 of the leg portion 35 to define a gap 44.
  • the gap 44 between the plate 41 and the underside 43 of the leg portion 35 permits limited pivotal movement of the foot 29 with respect to the leg portion 35 about the pivot axis 39. Specifically, the gap 44 operates to limit the amount of pivotal movement of the foot 29 to approximately plus or minus 10 degrees.
  • the leg portion 35 is slidably supported in a housing 45.
  • the housing 45 comprises a tubular member 47 of generally square cross-section.
  • the housing 45 and the leg portion 35 are relatively dimensioned such that the leg portion 35 extends downwardly beyond the lower end of the housing 45 when the operating mechanism 30 is in its raised position, as shown in Figure 5, and the upper end of the leg portion 35 extends beyond the upper end of the housing 45 when the operating mechanism 30 is in its lowered position, as shown in Figure 4.
  • the housing 45 includes a mounting mechanism 49 for releasably securing the operating mechanism 30 to the chassis 15 of the trolley 1 1 .
  • the housing 45 is rigidly secured with respect to the chassis 15 of the trolley and slidably supports the leg portion 35 which is operable to move the foot 29 into and out of frictional engagement with the ground 12.
  • the leg portion 35 is fixed against axial rotation to ensure that the pivot axis 39 of the foot 29 is always transverse to the direction of travel of the trolley 11.
  • leg portion 35 being telescopingly received and supported within the housing 45, with the leg portion 35 and housing 45 both being of non-circular cross-section (in this case generally square cross-section) such that the sliding fit therebetween prevents the leg portion 35 from freely rotating axially.
  • the operating mechanism 30 is biased towards its lowered position by a spring 51.
  • the spring 51 is a tension spring connected between the leg portion 35 and the housing 45, the arrangement being that the spring 51 is tensioned when the operating mechanism 30 is moved into each raised condition, with the tension force of the spring being arranged to urge the operating mechanism 30 to return to its lowered position.
  • the spring 51 is connected between a lug 53 provided on a side wall 55 of the housing 45 and extending inwardly through a gap 57 in the adjacent side wall 59 of the leg portion 35 and into the central cavity within the tubular portion 35.
  • the upper end of the spring 51 is connected to a lug 55 located adjacent the upper end of the leg portion 35.
  • the lug 55 forms part of an operating handle 57, as will be explained in more detail later.
  • the lug 55 is supported in an end cap 59 fitted onto the upper end of the tubular leg portion 35, the lug 55 being retained in place by a retaining nut (not shown) threadingly engaged with the free end 56 of the lug 55 extending outwardly beyond the leg portion 35.
  • the operating mechanism 30 includes a latch mechanism 65 for releasably retaining the operating mechanism in the raised condition.
  • the latch mechanism 65 comprises a notch 67 on the rear side wall 68 of the tubular leg portion 35, the notch 67 being adapted to engage against the upper edge 46 of the rear wall 48 of the housing 45 when the leg portion 35 is in the raised position, as best illustrated in Figure 5 of the drawings.
  • the section 68a of the rear side wall 68 of the leg portion 35 below the notch 67 is offset inwardly (as best seen in Figure 4) to define the notch 67 and provide for some limited lateral movement of the leg portion 35 with respect to the housing 45 to allow for engagement and release of the notch 67 with respect to the edge 46.
  • the notch 67 faces rearwardly; that is, towards the rear of the basket 17 and towards the centre of gravity of the operating handle 57. Consequently, when the user pulls the operating handle 57 upwards (as will be explained later), the notch 67 will latch into position in engagement with the upper edge 46 of the rear wall 48 of the housing 45.
  • the latch mechanism 65 is fragile, the fragility being brought about by the simplicity of its construction and the fact that the leg portion 35 and the handle 57 are readily movable in a forward direction particularly when subject to vibration. In other words, the leg portion 35 is readily movable away from the rear wall 48 of the housing 45, thereby moving the notch 67 out of engagement with the upper edge 46 of the housing 45.
  • the operating handle 57 is common to both operating mechanisms 30.
  • the operating handle 57 comprises a top rail 71 and two side rails 73 each connected at its lower end to a respective one of the operating mechanisms 30.
  • the bottom end of each side rail 73 has an out turned portion 75 which defines the respective lug 55.
  • Each side rail 73 extends upwardly from its respective operating mechanisms 30 to position the top rail 71 adjacent the main handle 23 of the shopping trolley 11.
  • the top rail 71 is configured to define a central handle portion 79.
  • the top rail 73 is also configured to define, in combination with the side rails 73, two guide portions 81 which co-operate with the lower support rails 28 of the supports 24 for the main handle 23, as best shown in Figures 1 and 7 of the drawings.
  • the guide portions 81 locate on the lower support rails 28 and are movable therealong during operation of the handle 57.
  • a user holding the grip portion 24 of the main handle 23 for the purposes of propelling or otherwise controlling movement of the trolley 11 is also able to grip the handle portion 79 of the operating handle 57, as illustrated in Figure 7 where the hands 80 of the user are depicted in outline.
  • the operating handle 57 Upon the user squeezing the handle portion 79 and so moving it towards the main handle 23, the operating handle 57 is . raised, thereby moving each of the operating mechanisms 30 from the lowered position to the raised position against the influence of . their respective springs 51.
  • the respective latch mechanism 65 operates to releasably retain the operating mechanism in that position.
  • the latch mechanism 65 is fragile, with the result that the latch can be released simply by pushing the operating handle 57 forwardly.
  • the latch mechanism 65 can also release when the shopping trolley 11 is subjected to excessive vibration, such as that which would occur in a situation where the trolley is on an excessive slope which causes the trolley to move out of control under the influence of gravity. In such a situation, vibration occurring would result in the release of the latch mechanism 65 and thereby application of the brakes of the trolley to retard movement of the trolley.
  • the top rail 71 is formed with a pair of downward projecting portions 85 which form a lifting projection 87.
  • the lifting projection 87 is at a height so that the front 25 of the basket 17 of another shopping trolley 11 which is being telescopingly inserted into the basket 17 of the shopping trolley 11 will pass under the lifting projection.
  • the top 23 of the basket 17 slopes downward toward the front 25.
  • the sloping top 18 of the another shopping trolley 11 will urge the lifting projection 87 upwardly, and move the operating mechanism 30 of the braking system 10 toward the raised position as shown, thus releasing the brakes on the forward-most shopping trolley 11.
  • the brakes are released, so that only the rear most shopping trolley 11 has an operable braking system.
  • a particular feature of the braking system 10 is that the pivot point 35 for each foot 29 results in the foot surface 31 presenting an edge 33 in the direction that the trolley 11 might be urged by external influences.
  • the presentation of the edge 33 to the ground 59 improves effectiveness of the braking action.
  • some lateral play available at the pivot point 35 provides the ability for a side edge of the foot surface 31 to be presented to the ground 12 in circumstances where the trolley is urged sidewardly. This improves frictional engagement between the foot 29 and the ground as a brake is applied in circumstances where the braking system 10 is applied to retard such movement of the trolley.
  • the second embodiment is directed to a braking system which is similar to the first embodiment, except for the operating mechanism and that part of the operating handle connected thereto.
  • the operating mechanism 90 of the brake system comprises a housing 91 in the form of an outer tubular member 93 of square cross-section, closed at the top by an upper cap 95 having a central aperture through which a rod portion 97 passes.
  • the rod portion 97 is fixedly secured to a lower cap 99 which is secured to the top of a leg portion 101.
  • the leg portion 101 supports the foot 29 and is slidably supported in the housing 91.
  • a compression spring 103 urging against the inside of the upper cap 95 and top of the lower cap 99 biases the operating mechanism 90 to a lowered position, in which position the foot 29 contacts the ground 12, as shown in Figure 8.
  • the outer tubular member 93 includes tabs 94 welded thereto for attachment to the chassis 15 of the shopping trolley 11.
  • Each outer tubular member 93 telescopingly receives the leg portion 101 , with the leg portion 101 being fixed against axial rotation.
  • the rod portion 97 is fabricated as a continuation of the respective side rail 73 of the operating handle 57.
  • the operating mechanism 90 includes a latch mechanism 105 which is formed by a notch 107 in the rod portion 97, which notch can locate on a lip 109 defined by the cap 95, when the operating mechanism 90 is moved to the raised position by the user lifting the operating handle 57, as shown in Figure 9.
  • The, notch 07 faces rearward, toward the rear of the basket 17, and toward the centre of gravity of the rod portion 97 and operating handle 57 which are located rearward of the axis of the rod portion 97.
  • the notch 107 will latch into position, requiring only the user to hold the handle 57 rearward to maintain the braking system in the latched condition.
  • the latch mechanism 105 is fragile, the fragility being brought about by the rod portion 97 and handle 57 (and upper parts generally) being readily moveable in a forward direction, particularly when subjected to vibration. If the brakes are unapplied, in the latched position with the operating mechanism 90 in the raised position, forward movement imparted by a user to the handle 57, will move the notch 107 out of engagement with the lip 67 allowing the operating mechanism 90 to resume under bias the lowered position, and contact the footing 29 with the ground 12, and thereby applying the brakes.
  • the pivot point may comprise a ball joint, and the arrangement between the ball joint and the operating mechanism be such that limited pivotal movement of the foot 29 is allowed.
  • the present invention provides a simple yet highly effective braking system 10 for a shopping trolley 11.
  • the braking system 10 can be employed to retard movement of the shopping trolley 11 in circumstances where it moves out of control, such as when running down a slope. Additionally, the braking system 10 can be operated by a user in order to stabilise the position of the trolley, such as at a time when goods are being loaded into, or removed from, the basket 17 of the shopping trolley 11.
  • the braking system 10 is easy to operate. In this regard, a user can simply release the brakes by pulling on the operating handle 57 so as to move each operating mechanism 30 from its lowered position to its raised position. The user can also easily apply the brakes when needed simply by pushing on the operating handle 57 so as to cause the latch mechanism of each operating mechanism to release, with the result that the operating mechanism is moved from its raised position to its lowered position under the influence of its respective spring. Additionally, should the shopping trolley 11 move out of control when the brakes are not applied, vibration imparted to the shopping trolley 1 1 as a result of its uncontrolled movement can cause the latching mechanism to release, so allowing the operating mechanism to move from the raised position to the lowered position and thereby apply the brakes.
  • the scope of the invention is not limited to the scope of the embodiment described.
  • the braking system 10 of each the embodiment has been described in relation to a shopping trolley, it should be appreciated that the braking system according to the invention may have applications to carts other than shopping trolleys, as well as to vehicles other than carts including, for example, children's scooters, certain wheelchairs, and mobility aids fitted with wheels or rollers.
  • the embodiments have been described in relation to a shopping trolley fitted with two brakes, it should be understood that a single brake may also be possible albeit probably not as effective.
  • the braking system may be retro-fitted to existing shopping trolleys or other vehicles, or alternatively may be incorporated therein at manufacture.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Handcart (AREA)

Abstract

L'invention concerne un système de freinage (10) destiné à un véhicule (11), tel qu'un chariot à provisions. Ce système de freinage (10) comprend au moins un pied (29) muni d'une surface sensiblement plate destinée à entrer en contact avec le sol par friction. Ce pied (29) est relié à un mécanisme de commande (30) mobile entre une position surélevée dans laquelle le pied (29) est surélevé afin de ne pas être en contact avec le sol, et une position abaissée dans laquelle le pied (29) est en contact avec le sol afin d'agir comme un frein pour le véhicule.
PCT/AU2002/000324 2001-03-21 2002-03-21 Frein destine a un vehicule WO2002074592A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPR3870A AUPR387001A0 (en) 2001-03-21 2001-03-21 Brake for a vehicle
AUPR3870 2001-03-21

Publications (1)

Publication Number Publication Date
WO2002074592A1 true WO2002074592A1 (fr) 2002-09-26

Family

ID=3827877

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2002/000324 WO2002074592A1 (fr) 2001-03-21 2002-03-21 Frein destine a un vehicule

Country Status (2)

Country Link
AU (1) AUPR387001A0 (fr)
WO (1) WO2002074592A1 (fr)

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WO2007029231A2 (fr) 2005-09-09 2007-03-15 Polymer Logistics B.V. Dispositif combinant chassis roulant et palette
CN110316236A (zh) * 2018-03-29 2019-10-11 卡麦德（医疗器械）有限公司 用于推车的制动装置
CN110847082A (zh) * 2018-10-15 2020-02-28 杭州富阳飞尚装饰工程有限公司 一种校园使用的移动护栏
JP2022164185A (ja) * 2021-04-16 2022-10-27 フランスベッド株式会社 ベッド装置
CN116538216A (zh) * 2023-07-06 2023-08-04 美固龙金属制品（中国）有限公司 刹车装置及床边桌

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US2537909A (en) * 1949-12-01 1951-01-09 Puddester Thomas Invalid chair
US2630961A (en) * 1950-12-26 1953-03-10 George W Burg Stock transfer truck
US2897910A (en) * 1955-03-18 1959-08-04 Orus C Steely Reference service cart
US2922494A (en) * 1956-05-14 1960-01-26 Harry I Clark Holding device for wheeled vehicles
US3715015A (en) * 1971-12-22 1973-02-06 A Morris Brake for rollable platform
US4503943A (en) * 1981-12-05 1985-03-12 Motoichi Tsukui Caster with a stopper
US4655466A (en) * 1983-03-31 1987-04-07 Hanaoka Sharyo Co., Ltd. Cart

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537909A (en) * 1949-12-01 1951-01-09 Puddester Thomas Invalid chair
US2630961A (en) * 1950-12-26 1953-03-10 George W Burg Stock transfer truck
US2897910A (en) * 1955-03-18 1959-08-04 Orus C Steely Reference service cart
US2922494A (en) * 1956-05-14 1960-01-26 Harry I Clark Holding device for wheeled vehicles
US3715015A (en) * 1971-12-22 1973-02-06 A Morris Brake for rollable platform
US4503943A (en) * 1981-12-05 1985-03-12 Motoichi Tsukui Caster with a stopper
US4655466A (en) * 1983-03-31 1987-04-07 Hanaoka Sharyo Co., Ltd. Cart

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007029231A2 (fr) 2005-09-09 2007-03-15 Polymer Logistics B.V. Dispositif combinant chassis roulant et palette
EP1934080A2 (fr) * 2005-09-09 2008-06-25 Polymer Logistics B.V. Dispositif combinant chassis roulant et palette
EP1934080A4 (fr) * 2005-09-09 2011-08-17 Polymer Logistics B V Dispositif combinant chassis roulant et palette
CN110316236A (zh) * 2018-03-29 2019-10-11 卡麦德（医疗器械）有限公司 用于推车的制动装置
CN110847082A (zh) * 2018-10-15 2020-02-28 杭州富阳飞尚装饰工程有限公司 一种校园使用的移动护栏
JP2022164185A (ja) * 2021-04-16 2022-10-27 フランスベッド株式会社 ベッド装置
JP7314195B2 (ja) 2021-04-16 2023-07-25 フランスベッド株式会社 ベッド装置
CN116538216A (zh) * 2023-07-06 2023-08-04 美固龙金属制品（中国）有限公司 刹车装置及床边桌
CN116538216B (zh) * 2023-07-06 2024-02-20 美固龙金属制品（中国）有限公司 刹车装置及床边桌

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