WO2009120061A1 - Refrigerator panel fastening apparatus and method thereof - Google Patents
Refrigerator panel fastening apparatus and method thereof Download PDFInfo
- Publication number
- WO2009120061A1 WO2009120061A1 PCT/MY2009/000043 MY2009000043W WO2009120061A1 WO 2009120061 A1 WO2009120061 A1 WO 2009120061A1 MY 2009000043 W MY2009000043 W MY 2009000043W WO 2009120061 A1 WO2009120061 A1 WO 2009120061A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lock
- panels
- base
- members
- collar
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000005057 refrigeration Methods 0.000 claims description 13
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 7
- 239000011496 polyurethane foam Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000004814 polyurethane Substances 0.000 abstract description 10
- 238000005304 joining Methods 0.000 abstract description 8
- 229920002635 polyurethane Polymers 0.000 abstract description 7
- 238000003466 welding Methods 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000003860 storage Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
- F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
- E04B1/6145—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with recesses in both frontal surfaces co-operating with an additional connecting element
- E04B1/6162—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with recesses in both frontal surfaces co-operating with an additional connecting element the connection made by an additional locking key
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
- F25D23/062—Walls defining a cabinet
- F25D23/063—Walls defining a cabinet formed by an assembly of panels
Definitions
- This invention relates to an apparatus for joining and fastening refrigerator panels and the method thereof.
- This practice has three major disadvantages. Firstly, shipping and storing whole assembled units of industrial refrigerators consumes a large transportation and storage space. Since shipping and storage costs are usually based on volume, this translates into a high cost. ' As the inside of the refrigerator is empty by design, the total volume used in shipping and storing refrigerators could be significantly reduced if the refrigerator could be shipped in pre-assembled panel form, with a system for easy assembly at the end user's location.
- the second disadvantage of the current practice is the more complex and therefore costlier requirements of the equipment needed for assembly. This includes the design of the PU injecting equipment needed for an assembled refrigerator. Assembled whole refrigerator, units have larger panels with larger hollows thus requiring a PU injector with a higher pressure.
- the third disadvantage of the current assembly method involves using welding to join the walls, floor and roof of the unit together. Welding not only requires a substantial input of energy, but is also a permanent joining technique. In some cases, it may be desirable to disassemble the unit after being in operation for a length of time, and having welded joints significantly limits the possibility for subsequent disassembly of the unit.
- What is further desired is to have an apparatus and method thereof for joining panels to form a complete refrigerator that allows subsequent disassembly of the unit in a repeatable fashion.
- the present invention relates to an apparatus and method for fastening refrigerator panels securely to each other by using fastening locks that are able to accommodate different joining angles so that an infinite number of designs may be assembled from a set number of panels.
- This invention allows the assembly to take place at the end user location, thus reducing the volume required for, and therefore cost of shipping and storing individual panels as opposed to complete refrigerator units.
- the smaller size of the individual panels requires less costly Polyurethane (PU) injection equipment, as a lower pressure is required to inject PU into smaller sized panels.
- PU Polyurethane
- This invention also replaces welding as a joining technique for the panels, thus allowing for subsequent disassembly and reassembly of the panels in a repeatable fashion.
- This invention also relates to a fastening apparatus for securing panels comprising: a first lock base fixed to a side surface of a first panel; a pair of lock members, a protrusion on a first end of each of the lock members being inserted into tunnels located on the first lock base, a lock collar placed in between the lock members thus securing the lock members to the first lock base; a second lock base fixed to a side surface of a second panel to be joined to the first panel; a second end of the lock members and lock collar being inserted into a housing on the second lock base; a lock pin securing the lock collar and lock members to the second lock base.
- lock pin is extended through openings located on the second end of the lock collar and the lock members such that the lock collar and lock members are fixed in relation to each other and the lock bases.
- a protrusion located on a first end of each lock member slides into a tunnel opening on each side of the first lock base such that the lock members and the lock collar is substantially secured to the first lock base.
- the lock bases are located within the volume of the panels such that an outer surface of the lock base is flush with the side surface of the panels.
- the panels can be joined at any angle in relation to one another.
- Each of the panels comprises two metal sheets sandwiched around an inner core of Polyurethane foam. In this fashion, any number of the fastening apparatus of this invention can be used to join a plurality of panels to form a complete refrigeration unit.
- the panels can be joined at any angle in relation to one another so that a multitude of refrigeration unit designs is achievable from only a set number of panel types.
- This invention also relates to a method for securing refrigerator panels to each other to form a complete refrigeration unit comprising the steps of: a. fixing a first lock base to a side surface of a first panel;
- the lock base is first temporarily secured within the hollow in between the two sheets by tape, and the Polyurethane foam is then injected in between the two sheets and solidifies around the lock base.
- the lock base is hence located within the volume of the panels such that an outer surface of the lock base is flush with the side surface of the panels.
- Figure 1 shows an exploded view of the fastening device in an embodiment of the present invention.
- FIGS 2a to 2c show the lock base in an embodiment of the present invention.
- FIGS 3 a to 3 c show the lock member in an embodiment of the present invention.
- FIGS 4a to 4c show the lock collar in an embodiment of the present invention.
- FIGS 5a and 5b show the lock pin in an embodiment of the present invention.
- FIGS 6a and 6b show the panel in an embodiment of the present invention.
- FIGS 7 to 9 show the assembly method of the fastening device in an embodiment of the present invention.
- Figures 10a to 1 Od show the assembly method of a refrigeration unit in an embodiment of the present invention.
- FIG. 1 there can be seen an exploded view the fastening device of the present invention with a pair of lock bases (20, 21) having a housing (24) at a central location and flanked by two tunnels (26) that lead to an opening on each side of the lock base (20, 21).
- a lock collar (40) sandwiched in between a pair of lock members (30, 31), the lock collars having a side protrusion (34) at a first end.
- This sandwich of the lock collar (40) and the lock members (30, 31) forms a shape that fits snugly at each end into the housing (24) on each of the lock bases (20, 21).
- a lock pin (50) slides through the openings aligned through a second end of the sandwich of the lock collar (40) and the lock members (30, 31), and extends through a pair of tunnels (26) that flank a housing (24) located on the second lock base.
- a cap (55) located on a proximal end of the lock pin (50) stops the lock pin from sliding all the way through the openings and tunnels (26).
- FIGS 2a to 2c show perspective, side and top views of the lock base (20, 21) of the present invention having a curved housing (24) adapted to receive and house a sandwich comprising the lock collar and lock members of this invention. Flanking the sides of the housing (24) and running all the way to the sides of the lock base are two tunnels (26) with a cylindrical hollow within the tunnels that allow a lock pin of this invention to slide through.
- FIGS 3 a to 3 c show perspective, top and front views of a lock member (30, 31) of the present invention having a side protrusion (34) on one side at a first end adapted to slide substantially into a tunnel located on a lock base of this invention.
- Figures 4a to 4c show perspective, top and front views of a lock collar (40) of the present invention having a pair of through openings at each end that allow for a lock pin of this invention to pass through.
- This lock collar functions as a spacer in between a pair of lock members of this invention so that the lock members will fit snugly into a housing located on the lock base of this invention.
- Figures 5a and 5b show a perspective and front view of the lock pin (50) of the present invention having a tapered distal end with a hollow length within the distal end that allows a stopper to be fastened to the distal end of the lock pin (50).
- the proximal end of the lock pin (50) has a cap (55) with a diameter substantially larger than that of the lock pin and that functions as a stopper to prevent the lock pin (50) from sliding all the way through openings and tunnels of this invention.
- a first lock base (20) is fixed to a side surface of a first panel; a pair of lock members (30, 31), a protrusion (34) located on a first end of each of the lock members (30, 31) being inserted into a pair of tunnels (26) located on each side of a housing (24) on the first lock base (20); a lock collar (40) placed in between the lock members (30, 31) to fasted the lock members (30, 31) to the lock base (20).
- a second lock base (21) is fixed to a side surface of a second panel to be joined to the first panel.
- a second end of the lock members (30, 31) and lock collar (40) is inserted into a housing (24) located on the second lock base (21).
- a lock pin (50) is extended through a through-hole created by the alignment of openings on the lock member (30, 31) and the lock collar (40) and a pair of tunnels (26) located on each side of a housing (24) on the second lock base (21), thus securing the lock collar (40) and lock members (30, 31) to the second lock base (21).
- the diameter of the lock pin (50) is only a fraction smaller than the diameter of the tunnels (26), thus making it difficult for the lock pin (50) to slide back out. This results in the first and second panels being securely fastened to each other.
- FIGS 6a and 6b show how the lock base (20) is attached to the panels (70) in the present invention.
- a plurality of lock bases (20) is temporarily attached (by tape or other means) at a side surface of a volume created by placing two metal panels (710, 711) close to each other. Polyurethane foam is then injected into the space between the two panels (710, 711) to form the inner core (720).
- the lock base (20) is hence located within the volume of the panels (70) such that an outer surface of the lock base (20) is flush with the side surface of the panels.
- the inner core (720) acts as a heat insulator for the refrigerator.
- the panels (70) are now ready for fastening using a method of the present invention as described below.
- FIG. 7a, 7b, 8a, 8b, 9a and 9b there is described the method for fastening refrigerator panels of the present invention.
- This method comprises the steps of: a. fixing a first lock base (20) to a side surface of a first panel (701) (using a method as described in the preceding paragraph above, but also achievable by other methods); b. attaching a first end of a first lock member (30) to one side of the lock base (20) by c. inserting a protrusion (34) on a first end of the first lock member (30) into a tunnel (26) located on one side of a housing (24) of the first lock base (20); d.
- any number of the fastening apparatus of this invention can be used to join a plurality of panels to form a complete refrigeration unit.
- the panels (70) can be joined at any angle in relation to one another so that a multitude of refrigeration unit designs is achievable from only a set number of panel types.
- FIGs 10a to -1Od explain how a plurality of the fastening apparatus of this invention can be used to join plurality of panels (70) to form a complete refrigeration unit, using the methods of this invention.
- a first panel (701) is joined to a second panel (702) to form the rear wall of a refrigeration unit.
- this rear wall is joined to the floor panel (703).
- the top panel (704) is then attached along with the front vertical beam (706) as illustrated by Figure 10c.
- a pair of side wall panels (705) are attached to the assembly, as well as a front horizontal beam (707).
- the front horizontal (707) and vertical beams (706) as well as the front edges of the side wall panels (705), top panel (704) and floor panel (703) form the frame allowing the refrigerator doors to be installed.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Refrigerator Housings (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI20080835 MY143547A (en) | 2008-03-26 | 2008-03-26 | Refrigerator panel fastening apparatus and method thereof |
MYPI20080835 | 2008-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009120061A1 true WO2009120061A1 (en) | 2009-10-01 |
Family
ID=41114148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/MY2009/000043 WO2009120061A1 (en) | 2008-03-26 | 2009-03-25 | Refrigerator panel fastening apparatus and method thereof |
Country Status (2)
Country | Link |
---|---|
MY (1) | MY143547A (en) |
WO (1) | WO2009120061A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1153803A (en) * | 1966-12-13 | 1969-05-29 | Carr Fastener Co Ltd | Two-Part Fastener for Securing Two Apertured Members to One Another |
US4067165A (en) * | 1976-11-19 | 1978-01-10 | Hiebert, Inc. | Panel system |
US5107648A (en) * | 1991-02-19 | 1992-04-28 | Roby Edward F | Insulated wall construction |
US6594870B1 (en) * | 2001-01-22 | 2003-07-22 | Johnson Controls Technology Company | Panel fastener |
-
2008
- 2008-03-26 MY MYPI20080835 patent/MY143547A/en unknown
-
2009
- 2009-03-25 WO PCT/MY2009/000043 patent/WO2009120061A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1153803A (en) * | 1966-12-13 | 1969-05-29 | Carr Fastener Co Ltd | Two-Part Fastener for Securing Two Apertured Members to One Another |
US4067165A (en) * | 1976-11-19 | 1978-01-10 | Hiebert, Inc. | Panel system |
US5107648A (en) * | 1991-02-19 | 1992-04-28 | Roby Edward F | Insulated wall construction |
US6594870B1 (en) * | 2001-01-22 | 2003-07-22 | Johnson Controls Technology Company | Panel fastener |
Also Published As
Publication number | Publication date |
---|---|
MY143547A (en) | 2011-05-31 |
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