EP0571238A2 - Zerlegbare Schrankstruktur und eine Form für den Herstellungsgebrauch - Google Patents
Zerlegbare Schrankstruktur und eine Form für den Herstellungsgebrauch Download PDFInfo
- Publication number
- EP0571238A2 EP0571238A2 EP93400783A EP93400783A EP0571238A2 EP 0571238 A2 EP0571238 A2 EP 0571238A2 EP 93400783 A EP93400783 A EP 93400783A EP 93400783 A EP93400783 A EP 93400783A EP 0571238 A2 EP0571238 A2 EP 0571238A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- bosses
- sets
- mould
- pair
- spaced apart
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title description 7
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000001746 injection moulding Methods 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 239000000470 constituent Substances 0.000 claims description 6
- 239000002991 molded plastic Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
- A47B96/02—Shelves
- A47B96/021—Structural features of shelf bases
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B47/00—Cabinets, racks or shelf units, characterised by features related to dismountability or building-up from elements
- A47B47/04—Cabinets, racks or shelf units, characterised by features related to dismountability or building-up from elements made mainly of wood or plastics
Definitions
- This invention relates to a knockdown cabinet structure consisting of moulded plastic components.
- the invention also relates to a two-piece mould for use in the injection moulding of an elongated, substantially planar object such as one of the components of the cabinet structure.
- Knockdown furniture structures such as, for example, cabinet structures, have long been known. They have generally been formed of wood or metal, though in recent times it has been known to form such knockdown items also of moulded plastics material. In general, such known knockdown items consist of a relatively large number of individual components and this leads to a corresponding difficulty in their ready assembly which, in many cases, involves the use of additional coupling elements such as screws.
- a knockdown cabinet structure formed of a plastics material comprising rear and side support frames; each side frame being formed at one longitudinal edge with longitudinally spaced apart tubular coupling lugs and longitudinally spaced apart, transversely directed shelf support ledges; the rear frame being formed at two opposite longitudinal edges thereof with two respective sets of coupling bosses, each set comprising longitudinally spaced apart coupling bosses and with two respective sets of shelf engaging bosses, each set comprising longitudinally spaced apart engaging bosses; and a plurality of shelves, each shelf comprising a planar base, a pair of transversely directed, elongated tubular edges, and a pair of side walls; the arrangement being such that upon assembly the sets of coupling bosses respectively fit into the sets of coupling lugs of the respective side frames, the sets of engaging bosses fit into respective end portions of the tubular edges, and said side walls rest on said support ledges.
- the invention also relates to means for manufacturing an elongated, substantially planar object such as, for example, the shelf for use in the knockdown cabinet structure in accordance with the invention, these means including a two-piece mould having cooperating portions adapted to define between them a mould cavity; said mould cavity comprising a substantially planar main cavity portion; a pair of substantially planar side cavity portions communicating with the longitudinal edges of said main cavity portion; and a pair of longitudinal, cylindrical cavity portions communicating with longitudinal edges of said main cavity portion; said mould being furthermore provided with two pairs of elongated, cylindrical core members respectively insertable into said cylindrical cavity portions; the constituent core members of each pair being formed with inter-engaging ends so that when inserted and aligned within their respective cylindrical cavity portions, they are effectively and uniformly spaced from the walls of the cylindrical cavity portion.
- Elongated, substantially planar objects such as, for example, shelves manufactured with such a mould and having the construction as indicated above, are characterized by increased strength and resistance to deformation.
- the cabinet structure in accordance with the present invention comprises a rear frame 1 and a pair of side frames 2a and 2b.
- the rear frame 1 consists of a pair of uprights 3a and 3b and a plurality (three) of slightly curved stile members 4a, 4b and 4c.
- the rear frame 1 is furthermore formed with a plurality (three) of straight cross members 5a, 5b and 5c.
- the cross members 5a, 5b and 5c are respectively formed at their extremities with downwardly depending bosses 6a and 6b.
- Formed on the uprights 3a and 3b and directed inwardly and respectively above the cross members 5a, 5b and 5c are engaging bosses 7a and 7b.
- the side frames 2a and 2b are of inverted U-shape comprising uprights 8a and 8b and three stile members 9a, 9b and 9c.
- each shelf 12 comprising a substantially planar, elongated base portion 13, a pair of side walls 14 and a pair of longitudinally directed tubular end walls 15.
- Each side wall 14 is formed with a downwardly directed, central projection 16.
- the components of the cabinet structure just described are assembled so as to form a structure shown in Fig. 6 of the drawings by inserting the bosses 6a and 6b respectively into the tubular lugs 11a and 11b of the side frames 2a and 2b.
- the shelves 12 are then fitted in position so that the engaging bosses 7a and 7b respectively fit into the tubular end portions of the tubular end wall 15 of each shelf and so that the projections 16 are located within corresponding apertures 16a formed in the stiles 9a, 9b and 9c of the side frames, the stiles 9a, 9b, 9c forming effective ledges on which the side walls 14 rest.
- the mould comprises a lower rectangular half mould 21 and an upper rectangular half mould 22, the lower half mould 21 being formed with a rectangular recess 23, with the upper half mould 22 being formed with a rectangular projection 24.
- Extending longitudinally along the longitudinal edges of the recess 23 are elongated, semi-cylindrical recesses 25, corresponding recesses 26 being formed in the upper portion 22 adjoining the longitudinal edges of the rectangular projection 24.
- the elongated recesses 25 and 26 communicate with corresponding circular apertures formed in mould end walls 27 (only one such end wall being shown).
- Formed in a central portion of the longitudinal recesses 26 are localized projections 28.
- Two pairs of elongated, cylindrical core members 31a, 31b (only one constituent member 31a of each pair being shown in full in Fig. 8, the other constituent member 31b being shown in dotted lines, both constituent members 31a, 31b of one of the pairs being shown in Fig. 9) are coupled at their outermost ends to a displaceable member 32 (only one such displaceable member being shown).
- Each pair of core members 31a, 31b are formed at their adjacent ends with mating projections and recesses 31c.
- the core members 31a, 31b are capable of displacement in the direction of the arrow 33, thereby introducing or retracting the core members 31a, 31b into and out of the moulds.
- the mould halves 21, 22 can be bolted together by suitable means (not shown) extending through aligned bores 34 formed in the moulds.
- the upper mould half 22 is formed with an injection nozzle 35 through which the plastics material can be injected into the mould.
- a substantially planar main cavity portion a pair of substantially planar side wall cavity portions (formed with a localized central recess so as to allow for the formation of the central projection 16 of each side wall 14) and a pair of longitudinal, cylindrical cavity portions communicating with the longitudinal edges of the main cavity portion which, together with the core members, define effective tubular cavity portions communicating with the longitudinal edges of the main cavity portion.
- the core members as two separate halves 31a, 31b which are introduced into the mould from opposite ends and are effectively supported at their innermost engaging ends 31c, it is ensured that the cores 31a, 31b are effectively and uniformly spaced from the walls of the cylindrical cavity portions, and thereby it is ensured that the shelf 12 which is formed, and which is shown in Figs. 8 and 9, is provided with uniformly dimensioned tubular end walls 15.
- a two-piece mould as just described can be readily employed for the production of other forms of substantially planar, elongated objects provided with tubular side walls for reinforcement.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Assembled Shelves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL101378A IL101378A0 (en) | 1992-03-26 | 1992-03-26 | Knockdown cabinet structure and a mould for use in manufacturing components thereof |
| IL101378 | 1992-03-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0571238A2 true EP0571238A2 (de) | 1993-11-24 |
| EP0571238A3 EP0571238A3 (en) | 1995-08-23 |
Family
ID=11063476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93400783A Withdrawn EP0571238A3 (en) | 1992-03-26 | 1993-03-25 | A knockdown cabinet structure and a mould for use in manufacturing |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0571238A3 (de) |
| IL (1) | IL101378A0 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7658154B2 (en) | 2007-01-19 | 2010-02-09 | Rubbermaid Incorporated | Shelving unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1552833A (de) * | 1967-06-06 | 1969-01-10 | ||
| FR2187509A1 (en) * | 1972-06-09 | 1974-01-18 | Drogo Pierre | Moulding perforated panels - for use as printed circuit boards without requiring subsequent drilling |
| FR2324254A1 (fr) * | 1975-09-16 | 1977-04-15 | Roziere Freres Sarl | Element de rangement demontable |
| AT381634B (de) * | 1982-05-11 | 1986-11-10 | Svoboda Entwicklung | Regalfach aus metallblech |
| EP0374774A2 (de) * | 1988-12-20 | 1990-06-27 | Schoeller-Plast AG | Flaschenkästen mit waagrechten Griffholmen |
-
1992
- 1992-03-26 IL IL101378A patent/IL101378A0/xx unknown
-
1993
- 1993-03-25 EP EP93400783A patent/EP0571238A3/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1552833A (de) * | 1967-06-06 | 1969-01-10 | ||
| FR2187509A1 (en) * | 1972-06-09 | 1974-01-18 | Drogo Pierre | Moulding perforated panels - for use as printed circuit boards without requiring subsequent drilling |
| FR2324254A1 (fr) * | 1975-09-16 | 1977-04-15 | Roziere Freres Sarl | Element de rangement demontable |
| AT381634B (de) * | 1982-05-11 | 1986-11-10 | Svoboda Entwicklung | Regalfach aus metallblech |
| EP0374774A2 (de) * | 1988-12-20 | 1990-06-27 | Schoeller-Plast AG | Flaschenkästen mit waagrechten Griffholmen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7658154B2 (en) | 2007-01-19 | 2010-02-09 | Rubbermaid Incorporated | Shelving unit |
Also Published As
| Publication number | Publication date |
|---|---|
| IL101378A0 (en) | 1992-11-15 |
| EP0571238A3 (en) | 1995-08-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
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| PUAL | Search report despatched |
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| AK | Designated contracting states |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19960224 |
|
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: B29C 45/26 20060101AFI20080115BHEP |