SE544652C2 - Locking arrangement for a food transport cart or food cabinet - Google Patents

Locking arrangement for a food transport cart or food cabinet

Info

Publication number
SE544652C2
SE544652C2 SE2150794A SE2150794A SE544652C2 SE 544652 C2 SE544652 C2 SE 544652C2 SE 2150794 A SE2150794 A SE 2150794A SE 2150794 A SE2150794 A SE 2150794A SE 544652 C2 SE544652 C2 SE 544652C2
Authority
SE
Sweden
Prior art keywords
arrangement
actuator
pivot
locking
safety
Prior art date
Application number
SE2150794A
Other languages
Swedish (sv)
Other versions
SE2150794A1 (en
Inventor
Fredrik Holmström
Tobias Zakariasen
Original Assignee
Scanbox Thermoproducts Ab
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 Scanbox Thermoproducts Ab filed Critical Scanbox Thermoproducts Ab
Priority to SE2150794A priority Critical patent/SE544652C2/en
Priority to PCT/EP2022/066517 priority patent/WO2022268651A1/en
Publication of SE2150794A1 publication Critical patent/SE2150794A1/en
Publication of SE544652C2 publication Critical patent/SE544652C2/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05CBOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12Fastening devices with bolts moving pivotally or rotatively with latching action
    • E05C3/16Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C3/22Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled
    • E05C3/24Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled in the form of a bifurcated member
    • E05C3/26Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled in the form of a bifurcated member engaging a stud-like keeper
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B1/00Knobs or handles for wings; Knobs, handles, or press buttons for locks or latches on wings
    • E05B1/0038Sliding handles, e.g. push buttons
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B1/00Knobs or handles for wings; Knobs, handles, or press buttons for locks or latches on wings
    • E05B1/0053Handles or handle attachments facilitating operation, e.g. by children or burdened persons
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B41/00Locks with visible indication as to whether the lock is locked or unlocked
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B53/00Operation or control of locks by mechanical transmissions, e.g. from a distance
    • E05B53/001Foot-operation
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B31/00Service or tea tables, trolleys, or wagons

Abstract

The disclosure relates to a locking arrangement and a food transport cart or a food cabinet comprising such locking arrangement. The locking arrangement comprises a locking pin (200), a rotatable gripping member (120) comprising a first and a second finger (121, 122), said fingers defining an intermediate gap (123) configured to selectively receive the locking pin (200), a rotatable actuator (110) configured to move the gripping member (120) between a closed position in which the locking pin (200) is received in said gap (123), and an open position in which the locking pin (200) is allowed to be moved out from said gap (123), and a torsion spring (130). The torsion spring is connected to a pivot of the gripping member (120) and to a pivot of the actuator (110) and is configured to bias the gripping member (120) towards the closed position.

Description

LOCKING ARRANGEIVIENT FOR A FOOD TRANSPORT CART OR FOODCABINET Field of the invention The present invention relates to a locking arrangement for a transport cart. lnparticular, the present invention relates to a locking arrangement for a food transportcart or a food cabinet and a food transport cart or food cabinet comprising suchlocking arrangement.
Background artFood transport carts are commonly used for transporting trays or the like containing hot or cold food.
They are commonly equipped with a locking arrangement comprising a lockingmechanism and a handle for opening and closing the cart. l\/lost lockingarrangements requires the person opening the cart to use one or both hands. Often,the person approaching the cart is holding a tray of food to be inserted, and in orderto open the cart, the person must first set the tray aside to be able to handle thelocking arrangement. This is cumbersome and time consuming. lt is also known toprovide the food transport cart with a foot pedal. However, since most carts areopened by using the hands, it is desirable to achieve a versatile locking arrangementwhich allows a facilitated operation.
Summary of the invention ln view of that stated above, the object of the present invention is to at leastpartly overcome one or more of the above-identified limitations of the prior art. lnparticular, it is an object to have an improved locking arrangement that can beopened by a person without using her hands.
According to an aspect of the present invention there is provided a lockingarrangement. The locking arrangement comprises: a locking pin; a rotatable grippingmember comprising a first and a second finger, said fingers defining an intermediategap configured to selectively receive the locking pin; a rotatable actuator configuredto move the gripping member between a closed position in which the locking pin isreceived in said gap, and an open position in which the locking pin is allowed to be moved out from said gap; eeefa torsion spring connected to a pivot of the grippingmember and to a pivot of the actuator and configured to bias the gripping membertowards the closed positionf; and a safety ioekino niernbeii' eorriotieinct a. ifiret orotrusioh. irvherein the safety iookiito ihemher may be ionoittidittaiitf moveebie hettfifeen a tooited position in witioh the first ototrusion is iohoitudineity aiioned tvith astohoiho iheinbei* ot the aottietor thereby restrictino rotationei moifernent ot' the actuator' and en uriiockeo position ih trvhich the first protrtieiori io iorioitiidinaiiy ctisoiaeed reiative the stoooino rrieihtsei* thereby aiioiivino rotetionai morse-merit oi theactuator.
By the torsion spring extending between the pivot of the gripping member andthe pivot of the actuator respectively, the gripping member is biased towards theclosed position. The locking arrangement will thereby automatically close around thelocking pin in a condition when the locking pin is pushed against the grippingmember. The torsion spring further facilitates a force transfer from the actuator to thegripping member such that a movement of the actuator will move the grippingmember to its open position, thereby allowing the locking pin to be released from theintermediate gap. Furthermore. a tookino arrahoehiertt eooordino to this. esoectenebies tookino of the iocitino arrenoement in the oiosed ooeition oi; ensurino thet ho exterrtei enoooeihent oen move the actuator and thereby set the oriopino meiriber toite ooert oosition. The tockino arrertoerrient itiey thereby be oroteotect duririo for'iristance trarisoortatiori, or in other oitotirristariees where it is tteeiratsie to iteeo the arrengeinent iooked.The locking arrangement may be arranged in any suitable position on the cart, such as at waist level, at knee level or even at foot level.
According to embodiments, the actuator may further comprise a push padsuitable for being pushed by an object or by a body part, and the push pad may beconnected to the actuator such that when the push pad is pushed, the actuatormoves the gripping member from the closed position to the open position.
The push pad facilitates external engagement of the actuator. l\/lorespecifically, the push pad allows a user carrying an object with both hands to engagewith the locking arrangement without first having to set the object down to free herhands. lnstead, the user can push the pushing pad with the object. The object maybe a tray or other food related equipment. Alternatively, the push pad may beengaged with a body part of the user that is free to use while holding an object, suchas a knee, foot, elbow, forearm, or dorsal part of a hand. Accordingly, the locking arrangement must not necessarily be arranged at waist height but may with remainedfunction be arranged at or below knee level. ln addition to the examples mentioned above, the push pad could be engagedwith many other objects or body parts.
According to embodiments, the gripping member in an end portion thereoffacing the actuator may comprise a guiding surface and a stopping shoulder, and theactuator may comprise a projection, wherein the projection is configured to abut thestopping shoulder when the locking arrangement is set to its closed position andwherein the projection is configured to slidingly engage the guiding surface when thelocking arrangement is moved from the closed position to the open position.
By the actuator comprising a guiding surface, the rotary movement of thegripping part is transformed to a linear force such that the locking pin is allowed to bereleased from the intermediate gap.
The guiding surface may in one embodiment be a cam surface.
The safety locking member may further comprise a major surface having a long hole, wherein the safety locking member may be suspended to the lockingarrangement by a first pivot extending through said long hole, thereby allowing thesafety locking member to be longitudinally moveable between the locked position andthe unlocked position According to embodiments, the first pivot may be a bolt forming a pivot ofeither the gripping member or the actuator.
By the first pivot also acting as a pivot of the gripping member or the actuator,fewer mechanical parts are required to fabricate and assemble the arrangement,thereby saving cost and space.
According to embodiments, the major surface of the safety Iocking membermay further comprise an additional long hole configured to receive an additionalpivot.
Advantageously, an additional long hole increases mechanical stability of thesafety Iocking member and the Iocking arrangement.
According to embodiments, the first pivot may be a bolt forming a pivot of thegripping member and the additional pivot may be a bolt forming the pivot of theactuator.
According to embodiments, the safety Iocking member may further comprise asecond protrusion comprising an indicator visually representing the locked and theunlocked position of the safety Iocking member.
Advantageously, the indicator allows the user to determine the state of theIocking arrangement without having to engage with it. The visual representation maybe made by two different colors, each color representing a state of the Iockingarrangement.
The indicator may comprise one field representing a locked position, and onefield representing an unlocked position.
According to embodiments, the Iocking arrangement may further comprise ahousing, said housing having a throughgoing opening configured to receive the firstpivot such that the first pivot is allowed to engage a Iocking member from the outsideof the housing, thereby allowing the safety Iocking member to be fixated in the lockedor unlocked position.
By engagement from the outside of the housing being allowed, quick and easyadjustment of the state of the Iocking arrangement to circumstances is facilitated. TheIocking arrangement may for instance be locked by a user during transportation, andthen unlocked upon arrival.
The housing may further comprise a window providing visual access to theindicator of the safety Iocking member such that the position of the safety Iockingmember is visually represented outside the housing.
The size of the window may be smaller than the size of the indicator such thatonly one part of the indicator is seen at a time. The indicator may be configured such that the part that is seen is representing the position of the safety Iocking memberand thereby the state of the Iocking arrangement.
According to an aspect of the present invention there is provided a foodtransport cart or a food cabinet. The food transport cart or food cabinet comprises aIocking arrangement as described above. The food cart or food cabinet may beinsulated or non-insulated. The food cart or food cabinet may comprise a thermalcontrol system.
The Iocking arrangement with its design and advantages has been thoroughlydiscussed above. These arguments are equally applicable to a food transport cartusing such Iocking arrangement. Thus, to avoid undue repetition, reference is madeto the sections above.
By comprising a Iocking arrangement as described above, opening, andclosing of the food cart is enabled for a person with one or two hands busy. This isbecause a person carrying an object may engage the Iocking arrangement with theobject or a free body part.
Brief description of the drawinqs The above, as well as additional objects, features and advantages of thepresent invention, will be better understood through the following illustrative and non-limiting detailed description of preferred embodiments of the present invention, withreference to the appended drawings, where the same reference numerals will beused for similar elements, wherein: Fig. 1 is a side view of a Iocking arrangement according to someembodiments.
Fig. 2 is a perspective view of a Iocking arrangement according to someembodiments.
Fig. 3 is an exploded view of a Iocking arrangement according to someembodiments.
Figs. 4a and 4b are perspective views of a Iocking arrangement according tosome embodiments.
Fig. 5 is a perspective view of a food transport cart comprising a Iockingarrangement according to some embodiments.
Detailed descriptionThe present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which currently preferred examples ofthe invention are shown. This invention may, however, be exemplified in manydifferent forms and should not be construed as limited to the examples set forthherein; rather, these examples are provided for thoroughness and completeness, andfully convey the scope of the invention to the skilled person. The description will referto a food transport cart. lt is however to be understood that the invention is equallyapplicable to a stationary cabinet for food.
Starting with Fig. 1, the overall design of the locking arrangement 100according to some embodiments is disclosed. The locking arrangement 100comprises, starting from the back, a protective plate 210, a locking pin 200, abackplate 180 and a gripping member 120. The gripping member comprises a firstfinger 121 and a second finger 122, the fingers defining an intermediate gap 123configured to selectively receive the locking pin 200. The locking arrangement 100further comprises a rotatable actuator 110 comprising a push pad 140. The actuator110 is configured to move the gripping member 120 between a closed position inwhich the locking pin 200 is received in said intermediate gap 123, and an openposition (illustrated in Fig. 4b) in which the locking pin 200 is allowed to be moved outfrom said intermediate gap 123. A torsion spring is connected to a pivot 160 of thegripping member 120 and to a pivot 161 of the actuator 110. The torsion spring isconfigured to bias the gripping member 120 towards the closed position (illustrated inFig. 4a). The locking arrangement 100 further comprises a safety locking member400. The safety locking member 400 is configured to lock the locking arrangement100, or to keep it in an unlocked state, by prohibitiawg or permittingengagement of the actuator 110. The locking arrangement 100 further comprises aspring washer 540 and a housing 500. The housing 500, the safety locking member400, and the gripping member 120 are mounted to the backplate 180 by a lockingmember 520 configured to be fastened on the pivot 161 of the actuatorThe underlying principle of the locking arrangement 100 may shortly bedescribed as follows: With the safety locking member 400 in an unlocked position, auser is enabled to push the push pad 140. By a pushing the push pad 140, theactuator 110 moves the gripping member 120 from the closed position to the openposition, thereby allowing the locking pin 200 to be released from the intermediategap 123 and thereby opening the locking arrangement 100. The user may then close the looking arrangement 100 by pushing the looking pin 200 against the grippingmember 110 until positioned in the intermediate gap 123 where the torsion spring130 is oonfigured to bias the gripping member 120 towards the closed position. Theuser may then look the looking arrangement 100 by moving the safety lookingmember 400 to a looked position. The aotions by the user oan be made seleotivelyand in any order.
Now turning to Fig. 2, the looking arrangement 100 aooording to someembodiments is disolosed. The looking arrangement 100 oomprises the looking pin200 and the rotatable gripping member 120. As previously disoussed, the grippingmember 120 oomprises a first finger 121 and a seoond finger 122 whioh togetherdefine an intermediate gap 123 whioh is oonfigured to seleotively reoeive the lookingpin 200. The seoond finger 122 may oomprise a tapered surfaoe 124 suoh that whenthe looking pin 200 is pushed against the gripping member 120, the gripping member120 is rotationally moved with the looking pin 200 suoh that the looking pin 200 isreoeived in the intermediate gapThe looking pin 200 may be arranged on a proteotive plate 210, and thelooking pin 200 and/or the proteotive plate 210 may be mounted to a first surfaoe610. The gripping member 120 may be arranged on the baokplate 180, and thegripping member 120 and/or the baokplate 180 may be mounted to a seoond surfaoe620 to be disoussed below.
By the looking pin 200 being reoeived in the intermediate gap 123 of thegripping member 120, the seoond surfaoe 620 is brought in oontaot with the firstsurfaoe 610. As an example, the first surfaoe 610 may be a door of for instanoe afood transport oart 600, and the seoond surfaoe 620 may be a door frame on saidfood transport oart 600. Fig. 5 is a perspeotive view of a food transport oart 600oomprising a looking arrangement 100 aooording to some embodiments. ln thisexample, when the looking pin 200 is reoeived in the intermediate gap 123, the door610 is olosed against the door frame 620 as illustrated in Figs. 4a and 4b.Alternatively and with remained funotion, the first surfaoe 610 may be a door frameand the seoond surfaoe 620 may be a door.
Now turning baok to Fig. 2, the looking arrangement 100 further oomprises arotatable aotuator 110. The rotatable aotuator 110 is oonfigured to move the grippingmember 120 between a olosed position in whioh the looking pin 200 is reoeived insaid intermediate gap 123, and an open position (illustrated in Fig. 4a) in whioh thelooking pin 200 is allowed to be moved out from said intermediate gap 123. A torsion spring 130 is connected to a pivot 160 of the gripping member 120 and to a pivot 161of the actuator 110. The torsion spring 130 is configured to bias the gripping member120 towards the closed position.
By the gripping member 120 being biased towards the closed position, itensures that after the receiving of the locking pin 200 into the intermediate gap, thegripping member 120 is moved to the closed position. Thus, the locking pin 200 isforced to remain in the intermediate gap 123 until the actuator 110 is caused to movethe gripping member 120 to the open position. ln the example of the grippingmember 120 being arranged on a second surface 620 and the locking pin 200 beingarranged on a first surface 610, it means that the surfaces 610, 620 are forced toremain in contact after the receiving of the locking pin 200 into the intermediate gap123. Hence, in the case of the first and second surfaces 610, 620 representing adoor and a door frame, the door 610 may be forced to remain in a closed state untilthe actuator 110 is caused to move the gripping member 120 to the open position,allowing for instance food stored in a food transport cart 600 to be safely kept untilneeded.
The actuator 110 may further comprise a push pad 140. The push pad 140 issuitable for being pushed by an object or by a body part. The push pad 140 isconnected to the actuator 110 such that when the push pad 140 is pushed, theactuator 110 acts as a lever and moves the gripping member 120 from the closedposition to the open position. The push pad 140 may consist of rubbery or plasticmaterial. lt may alternatively and with remained function consist of a metal or anyother material.
By the push pad 140 being connected to the actuator 110, it facilitates externalengagement to the actuator 110 and thereby the gripping member 120, such that aperson is allowed to shift the gripping member 120 from the closed to the openposition. ln the example of the gripping member 120 being arranged on a secondsurface 620 and the locking pin 200 being arranged on a first surface 610, and thefirst and second surfaces 610, 620 being a door and a door frame respectively, theperson is allowed to open the door.
By the push pad 140 being suitable for being pushed by an object or by a bodypart, it allows the person to open the door by other means than using her hands. Thismay be beneficial when the person is carrying an object as she may use the object toengage the actuator, or use a free body part. ln environments around food transportcarts, it is common for persons to be carrying trays of food. ln the case of the locking arrangement 100 of the present invention being arranged on a food transport cart600, persons carrying trays of food are enabled to open the door of such a foodtransport cart 600 without setting the tray down first, minimizing the risk of unsafehandling of the food and saving time.
According to some embodiments, the gripping member 120 may in an endportion thereof facing the actuator 110 comprise a guiding surface 171 and astopping shoulder 172. Further, the actuator 110 may comprise a projection 111. Theprojection 111 is configured to abut the stopping shoulder 172 in a position when thelocking arrangement 100 is set to its closed position. The projection 111 may beconfigured to slidingly engage the guiding surface 171 when the locking arrangement100 is moved from the closed position to the open position.
Now turning to Fig. 3, the locking arrangement 100 according to someembodiments is disclosed. lockingarrangement 100 mayefurther comprise; a safety locking member 400 comprising afirst protrusion 410. The safety locking member 400 is longitudinally moveablebetween a locked position in which the first protrusion 410 is longitudinally alignedwith a stopping member 150 of the actuator 110 thereby restricting rotationalmovement of the actuator 110; and an unlocked position in which the first protrusion410 is longitudinally displaced relative the stopping member 150 thereby allowingrotational movement of the actuatorln other words, the safety locking member 400 is configured to lock the lockingarrangement 100, or to keep it in an unlocked state, by prehâbštäiægiprohšbitirtg orpermitting engagement of the actuator 110. This may be beneficial in circumstanceswhere there is a risk of mechanical impact on the locking arrangement 100 such asduring transport of a food transport cart 600. A locking arrangement 100 arranged ona food transport cart 600 may be locked in the locked position by the safety lockingmember 400 to thereby prevent undesired external engagement of the actuator 110.The safety locking member 400 will accordingly keep the gripping member 120 in theclosed position. When the locking arrangement 100 is in an environment whereengagement should be allowed, the safety locking member 400 is convenientlymoved to the unlocked position, enabling flexibišity and eliminatingthe need for a second locking mechanism.
The safety locking member 400 may according to some embodimentscomprise a major surface 430 having a long hole 431. The safety locking member400 is suspended to the locking arrangement 100 by a first pivot 160 extending through said long hole 431. The safety looking member 400 is thereby allowed to belongitudinally moveable between the looked position and the unlooked position.
The first pivot 160 may be a bolt forming the pivot 160, 161 of either thegripping member 120 or the aotuatorThe major surface 430 of the safety looking member 400 may further oomprisean additional long hole 432 oonfigured to reoeive an additional pivotThe first and additional pivots 160, 161 may in one embodiment be bolts, andaot as the pivot 160 of the gripping member and the additional pivot 161 respeotively.The major surfaoe 430 may further oomprise a first looking hole »and theaotuator 110 may oomprise a seoond looking hole, the first and seoond looking holes being oonfigured to be aligned while the safety looking member 400 is in lookedposition (not illustrated). By the first and seoond looking holes being aligned, it isfaoilitated to provide the looking arrangement with for instanoe a padlook in order toprevent unauthorized movement of the safety looking member 400 to the unlookedposition.
The safety looking member 400 may further oomprise a seoond protrusion 420whioh oomprises an indioator 421. The indioator 421 is oonfigured to visuallyrepresent the looked and the unlooked position of the safety looking member 400.This may be benefioial as it allows a user to see the state of the looking The indioator 421 may oomprise one field representing a looked position, andone field representing an unlooked position. The fields representing respeotiveposition may by way of example be of different oolors.
Alternatively or additionally, the looking arrangement may in a non-disolosedembodiment oomprise a fixed pointer. ln suoh embodiment the oorresponding fieldwill be aligned with the pointer when the safety looking member 400 is at a oertainposition. There the state of the looking arrangement will be visually indioated.
Now turning baok to Fig.1. The looking arrangement 100 oomprises aproteotive housing 500. The housing 500 has a throughgoing opening 510 oonfiguredto reoeive the first pivot 160 suoh that the first pivot 160 is allowed to engage alooking member 520 from the outside the housing 500. Thereby the safety lookingmember 400 will be fixed in the looked or unlooked position. The looking member 520fixates the safety looking member 400 by pressing the housing 500 with the springwasher 540 against the safety looking member 400. The looking member 520 may bea nut. lt is understood that other types of looking members may be used withremained funotion.
The housing 500 comprises side walls 560, 570 and a front wall 550 whichtogether define a space configured to encapsulate the locking arrangement 100. Thefront wall 550 defines the throughgoing opening 510. The first side wall defines anopening 561 corresponding to the gripping member 120 such that while in openposition, the second finger 122 is allowed to rotationally move through the opening561, and the locking pin 200 is allowed to be received through the opening 561. Thefirst side wall comprises a window 530 providing visual access to the indicator 421 ofthe safety locking member 400. The position of the safety locking member 400 maythereby be is visually represented outside the housingThe second side wall 570 comprises an opening 571 corresponding to theactuator 120, allowing parts of the actuator 120 and the push pad 140 to extendthrough the opening 571 and facilitating external engagement of the actuator 120from outside the housing 500. Through said opening 571, parts of the safety lockingmember 400 are allowed to extend thereby facilitating external engagement of thesafety locking member 400 from outside the housingThe housing 500 protects mechanical parts of the locking arrangement 100,expands the lifetime of the arrangement, and increases safety for the user.
The locking pin 200 may be shielded by a protective plate 210. The protectiveplate 210 increases safety for the user by preventing access of objects or body partsinto the mechanism of the locking arrangementThe housing 500 and/or the protective plate 210 may consist of a plasticmaterial. lt/they may alternatively and with remained function consist of a metal orany other material. Preferably, the housing 500 and/or the protective plate 210consists of a sheet material such as a plastic sheet or a sheet metal.
Now turning to Figs. 4a-b and 5 which disclose the overall design of a foodtransport cart 600 comprising the locking arrangement 100 according to someembodiments. The food transport cart 600 comprises a first surface 610 of a doorand a second surface 620 of a door frame. The locking pin 200, and in someembodiments the protective plate 210, is arranged on the first surface 610. Thegripping member 120, the actuator 110, their pivots 160, 161, the torsion spring 130,the safety locking member 400, the spring washer 540, the housing 500 and thelocking member 520 are supported by the second surfaceAccording to some embodiments, the gripping member 120, the actuator 110,their pivots 160, 161, the torsion spring 130, the safety locking member 400, the spring washer 540, the housing 500 and the locking member 520 are supported bythe backpiate 180, the backpiate 180 being arranged on the second surfaceThe underlying principle of the food transport cart 600 may shortly bedescribed as follows. As a user is approaching the food transport cart 600 with a trayof foods in her hands, she is able to push the push pad 140 with the tray, therebyopening the locking member 100 and the door 610 of the food transport cart 600. Theuser may then insert the tray of foods into the food transport cart 600 and close thedoor 610 against the door frame 620 such that the locking pin 200 is received in theintermediate gap 123 and the locking arrangement 100 is closed. The user may then,by using her hands to engage the parts of the safety locking member 400 extendingthrough the housing, move the safety locking member 400 to the locked position, andfixate the safety locking member 400 by engaging the locking member 520. Thelocking arrangement 100 and the food transport cart 600 will thereby be locked. Theactions by the user can be made selectively and in any order.
The food transport cart 600 may comprise two or more locking arrangements100. The locking arrangements 100 may be arranged on two or more doors andcorresponding door frames.
The skilled person realises that a number of modifications of the embodimentsdescribed herein are possible without departing from the scope of the disclosure,which is defined in the appended claims.
The locking arrangement 100 may for instance be arranged on the foodtransport cart 600 with the gripping member 120 vertically positioned over theactuator 110 and parts of the actuator 120 with the push pad 140 extending throughthe housing 500 in a downwards direction. Alternatively, locking arrangement 100may be arranged on the food transport cart oppositely oriented such that the grippingmember 120 is vertically positioned under the actuator 110 and parts of the actuator120 with the push pad 140 extending through the housing 500 in an upwardsdirection.
The food transport cart 600 has been disclosed as having two doors, eachassociated with a respective ecompartment. lt is to be understood that the cart orcabinet may comprise one or more compartments. The compartments may bearranged side by side or be arranged on-ea top of the other.

Claims (11)

1. CLAIMS 1. A Iocking arrangement (100) for a transport cart, comprising: a Iocking pin (200); a rotatable gripping member (120) comprising a first and asecond finger (121, 122), said fingers defining an intermediate gap (123)configured to selectively receive the Iocking pin (200); a rotatable actuator (110) configured to move the grippingmember (120) between a closed position in which the Iocking pin (200) isreceived in said gap (123), and an open position in which the Iocking pin(200) is allowed to be moved out from said gap (123);i-ei-if:i a torsion spring (130) connected to a pivot of the grippingmember (120) and to a pivot of the actuator (110) and configured to bias thegripping member (120) towards the closed positiomågge a safety Eockino inernbet" 14001: cornpršsšrto a first protrusiort (tvheteiit the safety Eookšno rnetiibet' (400) is lonoitudinatlv rnoveable beivveena iooited position in vvhioh the tirst orotrusion 14101 is ionoiiudinatlv aišonedtvitn a stonoino fnember (150) of the actuator (110) there-by restrictino roiationei movement of tiie actuator (1 10); end an unlookeci position *3403 in1111114311 the iirst orotrusion *4103 is lonoitudinaiitf disolaoed retatiiife the stonninftmember (150) thereby atiovifiiio rotationai niovernent of the actuator
2. The Iocking arrangement (100) according to claim 1, wherein theactuator (110) further comprises a push pad (140) suitable for being pushedby an object or by a body part, wherein the push pad (140) is connected tothe actuator (110) such that when the push pad (140) is pushed, the actuator(110) moves the gripping member (120) from the closed position to the openposition.
3. The Iocking arrangement (100) according to claim 1 or 2, whereinthe gripping member (120) in an end portion thereof facing the actuator (110)comprises a guiding surface (171) and a stopping shoulder (172), andwherein the actuator (110) comprises a projection (111), wherein the projection (111) is configured to abut the Stopping shoulder (172) when thelocking arrangement (100) is set to its closed position and wherein theprojection (111) is configured to slidingly engage the guiding surface (171)when the locking arrangement (100) is moved from the closed position to the open position. gå. The locking arrangement (100) according to claim 41, wherein the safety locking member (400) further comprises a major surface (430) having along hole (431), wherein the safety locking member (400) is suspended to thelocking arrangement (100) by a first pivot (160) extending through said longhole (431), thereby allowing the safety locking member (400) to belongitudinally moveable between the locked position and the unlockedposition (340). gå. The locking arrangement (100) according to claim ägg, wherein thefirst pivot (160) is a bolt forming a pivot of either the gripping member (120) orthe actuator (110). å? The locking arrangement (100) according to claim -ä-íor ëå,wherein the major surface (430) of the safety locking member (400) furthercomprises an additional long hole (432) configured to receive an additionalpivot (161). 23. The locking arrangement (100) according to any one of claims ägg-ïfi, wherein the first pivot (160) is a bolt forming a pivot of the grippingmember (120) and the additional pivot (161) is a bolt forming the pivot of theactuator (110). gå. The locking arrangement (100) according to any one of claims 41-62, wherein the safety locking member (400) further comprises a secondprotrusion (420) comprising an indicator (421) visually representing the lockedand the unlocked position (340) of the safety locking member (400). 3-10. The locking arrangement (100) according to any one of claims -šigíg- ßšë, further comprising a housing (500), said housing (500) having athroughgoing opening (510) configured to receive the first pivot (160) suchthat the first pivot (160) is allowed to engage a locking member (520) fromthe outside the housing (500), thereby allowing the safety locking member(400) to be fixed in the locked or unlocked position (340). 10
4. The locking arrangement (100) according to claim 403, whereinthe housing (500) further comprises a window (530) providing visual accessto the indicator (421) of the safety locking member (400) such that theposition of the safety locking member (400) is visually represented outside thehousing (500). íä-šjni. A food transport cart (600) comprising a locking arrangement(100) according to any one of claims f-Mflg.
SE2150794A 2021-06-21 2021-06-21 Locking arrangement for a food transport cart or food cabinet SE544652C2 (en)

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SE2150794A SE544652C2 (en) 2021-06-21 2021-06-21 Locking arrangement for a food transport cart or food cabinet
PCT/EP2022/066517 WO2022268651A1 (en) 2021-06-21 2022-06-16 Locking arrangement for a food transport cart or food cabinet

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130015989A (en) * 2011-08-05 2013-02-14 엘지전자 주식회사 Refrigerator with a latch device
KR20130053318A (en) * 2011-11-15 2013-05-23 엘지전자 주식회사 A latch device of sheet metal material and a refrigerator thereof
WO2014196755A1 (en) * 2013-06-05 2014-12-11 Nifco Korea Inc. Button latch device of dual door type inner door
US20180202707A1 (en) * 2017-01-19 2018-07-19 Lg Electronics Inc. Refrigerator and door opening and closing apparatus for refrigerator

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DE906309C (en) * 1951-08-18 1954-03-11 Franz Schindelmeier Door lock
JPH046468Y2 (en) * 1985-12-20 1992-02-21
US6089626A (en) * 1998-06-12 2000-07-18 Shoemaker; Rodney Security device for a movable closure and method therefor
ITTO20011003A1 (en) * 2001-10-22 2003-04-22 Bitron Spa DOOR LOCKING DEVICE, PARTICULARLY FOR HOUSEHOLD APPLIANCES.
DE102019118535A1 (en) * 2019-07-09 2021-01-14 Maco Technologie Gmbh LATCH FOR A WINDOW, DOOR OR THE SAME

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KR20130015989A (en) * 2011-08-05 2013-02-14 엘지전자 주식회사 Refrigerator with a latch device
KR20130053318A (en) * 2011-11-15 2013-05-23 엘지전자 주식회사 A latch device of sheet metal material and a refrigerator thereof
WO2014196755A1 (en) * 2013-06-05 2014-12-11 Nifco Korea Inc. Button latch device of dual door type inner door
US20180202707A1 (en) * 2017-01-19 2018-07-19 Lg Electronics Inc. Refrigerator and door opening and closing apparatus for refrigerator

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