FI126376B - Door opening and closing mechanism for temperature-controlled product furniture, in particular frozen or chilled product furniture - Google Patents

Door opening and closing mechanism for temperature-controlled product furniture, in particular frozen or chilled product furniture Download PDF

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Publication number
FI126376B
FI126376B FI20145294A FI20145294A FI126376B FI 126376 B FI126376 B FI 126376B FI 20145294 A FI20145294 A FI 20145294A FI 20145294 A FI20145294 A FI 20145294A FI 126376 B FI126376 B FI 126376B
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FI
Finland
Prior art keywords
door
opening
closing mechanism
closing
hydraulic means
Prior art date
Application number
FI20145294A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20145294A (en
Inventor
Mikko Mykkänen
Kimmo Heinävaara
Original Assignee
Norpe Oy
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 Norpe Oy filed Critical Norpe Oy
Priority to FI20145294A priority Critical patent/FI126376B/en
Priority to EP20140189017 priority patent/EP2868238A1/en
Priority to US14/526,810 priority patent/US9451837B2/en
Priority to RU2014143729A priority patent/RU2014143729A/en
Priority to CA2869405A priority patent/CA2869405C/en
Publication of FI20145294A publication Critical patent/FI20145294A/en
Application granted granted Critical
Publication of FI126376B publication Critical patent/FI126376B/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00—Show cases or show cabinets
    • A47F3/04—Show cases or show cabinets air-conditioned, refrigerated

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Refrigerator Housings (AREA)
  • Freezers Or Refrigerated Showcases (AREA)

Description

Opening and closing mechanism of a door of a temperature controlled display cabinet, in particular of a freezer island or of a refrigerated cabinet
The present invention relates to an opening and closing mechanism of a door of a temperature controlled display cabinet, advantageously of a semi-vertical temperature controlled display cabinet and more especially the invention relates to an opening and closing mechanism of a door of a temperature controlled display cabinet according to the preamble of claim 1.
Temperature controlled display cabinets are used mostly in grocery stores and in food establishments, such as restaurants, cafeterias etc. Temperature controlled display cabinets comprise different types of cabinets for displaying and making available food products, groceries etc. for customers, in particular for self-service shopping. The display cabinets can be refrigerated cabinets, freezers or warmed cabinets. For example freezer islands are used in grocery stores for frozen food products and they are located in middle of the floor space of the store so that customers have access to the product space around the island at least from the longitudinal sides of the island. In some cases freezer islands may be located next to a wall or another structure so that accessibility is only from one longitudinal side of the island.
The gravitationally closable doors of temperature controlled display cabinet, in particular of a freezer island, might cause as disadvantage that the door might be heavy for customers to open and that the door might hit the cabinet frame hard if uncontrollably closed. Uncontrollable closing of the door may also cause danger to customers, for example hand or fingers may remain between the frame of the door and the door.
An object of the present invention is to create an opening and closing mechanism of a door of a temperature controlled display cabinet which is gravitationally closable but easily openable and softly closable.
An object of the present invention is to create an opening and closing mechanism of a door of a temperature controlled display cabinet in which disadvantages of uncontrollable closing of the door and of heavy opening of the door are eliminated or at least minimized.
In order to achieve the above objects and those that will come apparent later the opening and closing mechanism of a door of a temperature controlled display cabinet is mainly characterized by the features of the characterizing part of claim 1. Advantageous embodiments and features are defined in dependent claims.
According to the invention the opening and closing mechanism of a door of a temperature controlled display cabinet, which is advantageously of a semivertical display cabinet, which display cabinet comprises at least one gravitationally closable door that is in inclined position in relation to vertical direction such that from the view of the customer side the main direction of the surface of the door is backwards and upwards inclined. By customer side is meant the side on which the customer is normally located when picking food products from the cabinet.
The gravitationally closable in inclined position located doors of the temperature controlled display cabinets might cause as disadvantage that the door that comprises a transparent main surface and door frames around it might be heavy for customers to open and that the door might hit the temperature controlled display cabinet, in particular a freezer island, frame hard if uncontrollably closed. For eliminating these possible disadvantages the door comprises an opening and closing mechanism that ensures that the door is easy to open and closes softly and slow such that the closing speed is below the allowable closing speed defined in relating machine directives, typically for example below 0,2 m/s. The opening and closing mechanism advantageously is formed of a spring mechanism and hydraulic means. The hydraulic means slows down closing speed of the door during its closing movement by hydraulic slowing. The spring mechanism assists in opening the door by mechanically lightening the load caused by the door.
One important factor of the opening and closing mechanism of a door of a temperature controlled display cabinet is that there is only limited space available for the opening and closing mechanism and especially due to the need for visibility requirements of the products inside the cabinet in order for the customers to have unlimited visibility of the products the opening and closing mechanism may not block the view.
The opening and closing mechanism of a door of a temperature controlled display cabinet comprises the spring mechanism and the hydraulic means for slowing down closing speed and for assisting the opening of the door. Further the opening and closing mechanism comprises a turning arm mechanism, which is advantageously formed as a turning arm mechanism comprising advantageously at least one telescopic arm.
Advantageously the opening and closing mechanism of a door of a temperature controlled display cabinet is on one hand attached to a frame part of the door and on the other hand attached to the door such that when the door is in closed position the opening and closing mechanism is located inside the temperature controlled display cabinet. More advantageously the opening and closing mechanism is located on the upper part of the door such that the spring mechanism and the hydraulic means are attached to an upper horizontal frame part of the door frame and correspondingly the turning arm mechanism is attached to the upper horizontal part of the door. In this advantageous arrangement the horizontal upper door frame is provided with an opening through which the turning arm mechanism extends from the door to be connected inside the cabinet to the on the door frame inside located spring mechanism and the hydraulic means in order to connect the function of the spring mechanism and the hydraulic means to the opening / closing movement of the door. Advantageously the size of the opening for the turning arm mechanism is optimized in view of temperature control.
Advantageously the hydraulic means and the spring mechanism are located sequentially and such that at least part of the arm of the hydraulic means is located inside the spring spiral. Thus the hydraulic means and the spring mechanism are located at least partially lengthwise within each other. By this space is saved.
According to an advantageous feature the turning arm mechanism comprises at least one J-lever providing the accompanying movement of the door as far as possible and back.
Advantageously in the temperature controlled display cabinet the door with the opening and closing mechanism is inclined such that the horizontal component of the inclination angle is smaller than the vertical component of the inclination angle. Advantageously the door is inclined in inclination angle at least 15 °and less than 25 ° advantageously 18-23 °in relatio n to vertical direction.
Advantageously the temperature controlled display cabinet, in particular a freezer island, comprises a frame structure that has a back wall, a front wall, a base part, side walls, a ceiling part, and at least one door attached to the frame turnably.
In the following the invention is described in detail with reference to the accompanying drawings, in which in figures 1 - 3 is schematically shown one advantageous example of the opening and closing mechanism of a door of a temperature controlled display cabinet, in particular of a freezer island or of a refrigerated cabinet, in figure 4 is schematically shown one advantageous example of a temperature controlled display cabinet and in figure 5 is schematically shown an example of a temperature controlled display cabinet, in view from the customer side.
During the course of the following description of figures 1 - 5 like numbers and signs will be used to identify like elements, parts and part components unless otherwise mentioned. In the following the examples are described by reference to a freezer island in view of simplifying the disclosure but it should be noted that instead of a freezer island any type of a temperature controlled display cabined with an opening and closing mechanism of a gravitationally closable door can have similar features and properties in accordance with the invention.
In figures 1 - 3 is shown an advantageous example of the opening and closing mechanism 40 of a door 26 (figs. 4 and 5) of a temperature controlled display cabinet 20 (figs. 4 and 5). The opening and closing mechanism 40 comprises a spring mechanism 41, hydraulic means 42 and a turning arm mechanism 43. The hydraulic means 42 slows down closing speed and acceleration of the door during its closing movement and the spring mechanism 41 assists opening the door by lightening the load caused by the door.
In the example of figures 1 - 3 of the opening and closing mechanism 40 the hydraulic means 42 comprise a cylinder 54 and arm/arms 55, 56, the spring mechanism 41 is a spiral spring 51 with attachment ends 52 and the turning arm mechanism 43 comprises an idler 61 connected at first end to one attachment end 52 of the spiral spring 51 and at the second end to a J-lever 62, which in turn is attached at its arched end to the inner part 63 of the telescopic lever, which inner part 63 is arranged movably in the outer part 64 of the telescopic lever connected to attachment part 65, which is attached to the connecting part 75, which will connect the opening and closing mechanism 40 at one end to the door of the temperature controlled display cabinet. The inside parts of the opening and closing mechanism 40 are supported by another connecting part 74, which will connect the opening and closing mechanism 40 at the other end to the door frame of the temperature controlled display cabinet. The hydraulic means 42 are attached at opposite end in respect of the arm 55 by fastening means 77 to the connecting means 74. The spring means 41 are attached at one end to fastener 76 attached to the connecting means 74 and at the other end to the idler 61 of the turning arm mechanism 43. The arm 56 of the hydraulic means 42 is also connected to the idler 61. The telescopic levers 63, 64 have an arcuate shape in order to provide an arc-like movement path corresponding to the angular movement of the door. The J-lever 62 functions for providing the accompanying movement of the door as far as possible and back. The hydraulic means 42 and the spring mechanism 41 are located sequentially and such that at least part of the arm 55, 56 of the hydraulic means 54 is located inside the spring spiral. Thus the hydraulic means 42 and the spring mechanism 41 are located at least partially lengthwise within each other. The arms 55, 56 can be constructed of two arms 55, 56 as explained above or constructed of one arm only.
In figure 1 the opening and closing mechanism 40 is shown in position where the door is closed i.e. the opening angle of the door is 0°. In this position the hydraulic means 42 have the arms 55, 56 at the longest positions and the spring means 41 is in tensioned state and the telescopic lever 63, 64 is at closed position.
In figure 2 the opening and closing mechanism 40 is shown in position where the door is partly opened and the opening angle of the door is 45°. In this position the hydraulic means 42 have the arm/arms 55, 56 at partly closed positions and the spring means 41 is in partly tensioned state and the telescopic lever 63, 64 is at position. The function of the telescopic lever 63, 64 begins when movement of the spring means 41 stops entirely.
In figure 3 the opening and closing mechanism 40 is shown in position where the door is fully opened and the opening angle of the door is 90°. In this position the hydraulic means 42 have the arm/arms 55, 56 at the shortest positions and the spring means 41 is in untensioned state and the telescopic lever 63, 64 is at opened position.
When the door is closed the movements of the opening and closing mechanism 40 function at respective but opposite order in view of the opening movements functions explained above in view of figures 1 - 3.
In figure 4 is schematically shown one advantageous example a temperature controlled display cabinet 20, in particular a freezer island. The temperature controlled display cabinet, in particular a freezer island 20 has a cabinet-like appearance and it is openable from the front, i.e. from the longitudinal side at customer side, for customers to pick desired food products. The freezer island 20 has a frame structure 30 having a back wall 31, a front wall 34, a base part 32 and a ceiling part 33 and side walls (not shown) surrounding a product space 23. The product space 23 of the freezer island 20 according to this example comprises two main parts for products: a shelf part 21 comprising shelves and a chest part 22 below the shelf part 21. The freezer island 20 has transparent, openable doors 26 that are in inclined position in relation to vertical direction such that from the view of the customer the main direction of the surface of the door 26 is backwards and upwards inclined. The surface of the door 26 in relation to vertical direction can be straight as shown in the example of the figure or broken line or curved, for example convex in view of the customer. The door 26 has a handle 28, for the customer to grip on for opening the door. The door 26 is gravitationally closable door in inclined position in relation to vertical direction for example such that at least one shelf of the shelf part 21 is visible in the horizontal direction through the door 26 and such that the horizontal component of the inclination angle is smaller than the vertical component of the inclination angle. The display cabinet 20 has an opening and closing mechanism 40, which comprises a spring mechanism 41, hydraulic means 42 and a turning arm mechanism 43 and attached functionally movably to the frame structure 30 of the display cabinet 20. The hydraulic means 42 slows down closing speed and acceleration of the door 26 during its closing movement and the spring mechanism 41 assists opening the door 26 by lightening the load caused by the door 26. In this example the hydraulic means 42 and the spring mechanism 41 attached to the top part of the frame structure 47 of the door of the display cabinet 20 and the turning arm mechanism 43 attached to the top part of the door 26 are located inside the freezer island 20.
In the example of figure 5 the temperature controlled display cabinet, in particular a freezer island, 20 is viewed from the customer side. In this example the freezer island 20 comprises four doors 26 each comprising an opening and closing mechanism 40 and a handle 28. Each door 26 comprises a transparent main surface 46 and door frame 47 around it. The doors 26 have hinges 29 for turnably attaching the doors 26 to frame structure 30 of the display cabinet 20. In this example the hydraulic means and the spring mechanism attached to the top part of the frame structure of the door of the display cabinet and the turning arm mechanism attached to the top part of the door are located inside the freezer island.
Reference signs used in the drawing: 20 temperature controlled display cabinet, in particular a freezer island 21 shelf part 22 chest part 23 product space 24 top surface of the ceiling part 26 door 28 handle 29 hinge 30 frame structure 31 back wall 32 base part 33 ceiling part 34 front wall 35 center wall 36 partition wall 40 opening and closing mechanism 41 spring mechanism 42 hydraulic means 43 turning arm mechanism 46 main surface of the door 47 doorframe 51 spring 52 attachment end of the spring 54 cylinder of the hydraulic means 55 arm of the hydraulic means 56 arm of the hydraulic means 61 idler 62 J-lever 63 inside part of the telescopic lever 64 outside part of the telescopic lever 65 lever attachment part 74 connecting part 75 connecting part 76 fastening means 77 fastener

Claims (9)

1. Lämpötilasäädetyn tuotekalusteen (20), edullisesti semivertikaalin lämpötilasäädetyn tuotekalusteen elintarvikemyymälää varten, oven (26) avaamis- ja sulkemismekanismi (40), joka käsittää runkorakenteen (30), joka ympäröi ainakin yhtä avattavaa tuotetilaa (23) elintarviketuotteita varten, joka avaamis- ja sulkemismekanismi (40) käsittää jousimekanismin (41), hydraulisen välineen (42) ja kääntövarsimekanismin (43), tunnettu siitä, että ovi on painovoimaisesti suljettava ovi (26) ja kallistetussa asennossa suhteessa vertikaalisuuntaan siten, että katsottaessa asiakkaan puolelta oven (26) pääpinnan pääsuunta on taaksepäin ja ylöspäin kallistettu ja että hydraulinen väline (42) hidastaa oven sulkeutumisnopeutta ja -kiihtyvyyttä sen sulkeutuvan liikkeen aikana ja jousimekanismi (41) avustaa oven avaamista keventämällä oven aiheuttamaa kuormaa.A door opening and closing mechanism (40) for a temperature controlled product furniture (20), preferably a semi-vertical temperature controlled product furniture for a food store, comprising a frame structure (30) surrounding at least one opening product space (23) for food products. the closing mechanism (40) comprising a spring mechanism (41), a hydraulic means (42) and a swingarm mechanism (43), characterized in that the door is a gravitationally closing door (26) and in an inclined position relative to the main direction of the main surface of the door (26) is tilted backward and upward, and that the hydraulic means (42) slows down the door closing speed and acceleration during its closing movement, and the spring mechanism (41) assists in opening the door by reducing the load exerted by the door. 2. Patenttivaatimuksen 1 mukainen avaamis- ja sulkemismekanismi, tunnettu siitä, että kääntövarsimekanismi (43) käsittää ainakin yhden teleskooppivarren (63, 64).Opening and closing mechanism according to Claim 1, characterized in that the pivoting arm mechanism (43) comprises at least one telescopic arm (63, 64). 3. Patenttivaatimuksen 2 mukainen avaamis- ja sulkemismekanismi, tunnettu siitä, että ainakin yksi teleskooppivarsi (63, 64) on kaareutuva.Opening and closing mechanism according to claim 2, characterized in that at least one telescopic arm (63, 64) is curved. 4. Jonkin edellisen patenttivaatimuksen mukainen avaamis- ja sulkemismekanismi, tunnettu siitä, että avaamis- ja sulkemismekanismi (40) on toisaalta kiinnitetty oven (26) runko-osaan (47) ja toisaalta oveen (26) siten, että kun ovi on suljetussa asemassa avaamis- ja sulkemismekanismi (40) on sijoitettu lämpötilasäädetyn tuotekalusteen (20) sisäpuolelle.Opening and closing mechanism according to one of the preceding claims, characterized in that the opening and closing mechanism (40) is fixed on the one hand to the frame part (47) of the door (26) and on the other hand to the door (26). and the closing mechanism (40) is located inside the temperature controlled product furniture (20). 5. Patenttivaatimuksen 4 mukainen avaamis- ja sulkemismekanismi, tunnettu siitä, että avaamis- ja sulkemismekanismi (40) on sijoitettu oven (26) yläosaan siten, että jousimekanismi (41) ja hydraulinen väline (42) ovat kiinnitetyt ovirungon (57) ylempään horisontaaliseen runko-osaan ja vastaavasti kääntövarsimekanismi (43) on kiinnitetty oven (26) ylempään horisontaaliseen osaan.Opening and closing mechanism according to claim 4, characterized in that the opening and closing mechanism (40) is disposed at the top of the door (26) such that the spring mechanism (41) and the hydraulic means (42) are secured to the upper horizontal frame of the door frame (57). and the pivoting arm mechanism (43) is attached to the upper horizontal portion of the door (26). 6. Patenttivaatimuksen 4 tai 5 mukainen avaamis- ja sulkemismekanismi, tunnettu siitä, että horisontaali ylempi ovirunko on varustettu aukolla, jonka kautta kääntövarsimekanismi (43) ulottuu ovesta (26) liitettäväksi lämpötilasäädetyn tuotekalusteen (20) sisäpuolella ovirunkoon (47) sisäpuolella sijoitettuihin jousimekanismiin (41) ja hydrauliseen välineeseen (42) jousimekanismin ja hydraulisen välineen toiminnan kytkemiseksi ovena avautuvaan / sulkeutuvaan liikkeeseen.Opening and closing mechanism according to claim 4 or 5, characterized in that the horizontal upper door frame is provided with an opening through which the pivot arm mechanism (43) extends from the door (26) to be connected to a spring mechanism (47) located inside the door frame (47). ) and a hydraulic means (42) for engaging the operation of the spring mechanism and the hydraulic means in a door opening / closing movement. 7. Jonkin edellisen patenttivaatimuksen mukainen avaamis- ja sulkemismekanismi, tunnettu siitä, että hydraulinen väline (42) ja jousimekanismi (41) on sijoitettu peräkkäin ja siten, että ainakin osa hydraulisen välineen (42) varresta (55, 56) on sijoitettu jousispiraalin sisäpuolelle.Opening and closing mechanism according to any one of the preceding claims, characterized in that the hydraulic means (42) and the spring mechanism (41) are arranged one after the other and at least part of the shaft (55, 56) of the hydraulic means (42) is disposed inside the spring coil. 8. Jonkin edellisen patenttivaatimuksen mukainen avaamis- ja sulkemismekanismi, tunnettu siitä, että hydraulinen väline (42) ja jousimekanismi (41) on sijoitettu ainakin osittain pituussunnassa toistensa kanssa sisäkkäin.Opening and closing mechanism according to one of the preceding claims, characterized in that the hydraulic means (42) and the spring mechanism (41) are arranged at least partially in the longitudinal direction with one another. 9. Patenttivaatimuksen 1 mukainen avaamis- ja sulkemismekanismi, tunnettu siitä, että kääntövarsimekanismi (43) käsittää ainakin yhden J-vivun (62), joka mahdollistaa oven (26) liikkeen seuraamisen mahdollisimman kauas ja takaisin.Opening and closing mechanism according to claim 1, characterized in that the pivoting arm mechanism (43) comprises at least one J-lever (62) which enables the movement of the door (26) to be monitored as far back and as possible.
FI20145294A 2013-11-01 2014-03-28 Door opening and closing mechanism for temperature-controlled product furniture, in particular frozen or chilled product furniture FI126376B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI20145294A FI126376B (en) 2014-03-28 2014-03-28 Door opening and closing mechanism for temperature-controlled product furniture, in particular frozen or chilled product furniture
EP20140189017 EP2868238A1 (en) 2013-11-01 2014-10-15 Temperature controlled display cabinet, in particular a freezer island, comprising a door
US14/526,810 US9451837B2 (en) 2013-11-01 2014-10-29 Temperature controlled display cabinet, in particular a freezer island, comprising a door
RU2014143729A RU2014143729A (en) 2013-11-01 2014-10-30 SHOW-WINDOW WITH CONTROLLED TEMPERATURE
CA2869405A CA2869405C (en) 2013-11-01 2014-10-31 Temperature controlled display cabinet, in particular a freezer island, comprising a door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20145294A FI126376B (en) 2014-03-28 2014-03-28 Door opening and closing mechanism for temperature-controlled product furniture, in particular frozen or chilled product furniture

Publications (2)

Publication Number Publication Date
FI20145294A FI20145294A (en) 2015-09-29
FI126376B true FI126376B (en) 2016-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
FI20145294A FI126376B (en) 2013-11-01 2014-03-28 Door opening and closing mechanism for temperature-controlled product furniture, in particular frozen or chilled product furniture

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FI (1) FI126376B (en)

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Publication number Publication date
FI20145294A (en) 2015-09-29

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