US3851936A - Attachment device for modular units - Google Patents

Attachment device for modular units Download PDF

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US3851936A
US3851936A US00388986A US38898673A US3851936A US 3851936 A US3851936 A US 3851936A US 00388986 A US00388986 A US 00388986A US 38898673 A US38898673 A US 38898673A US 3851936 A US3851936 A US 3851936A
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ribs
units
flutes
depth
side walls
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    • 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
    • A47B87/00—Sectional furniture, i.e. combinations of complete furniture units, e.g. assemblies of furniture units of the same kind such as linkable cabinets, tables, racks or shelf units
    • A47B87/02—Sectional furniture, i.e. combinations of complete furniture units, e.g. assemblies of furniture units of the same kind such as linkable cabinets, tables, racks or shelf units stackable ; stackable and linkable
    • 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
    • F16B12/00—Jointing of furniture or the like, e.g. hidden from exterior
    • F16B12/10—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like
    • F16B12/12—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like for non-metal furniture parts, e.g. made of wood, of plastics
    • F16B12/20—Jointing of furniture or the like, e.g. hidden from exterior using pegs, bolts, tenons, clamps, clips, or the like for non-metal furniture parts, e.g. made of wood, of plastics using clamps, clips, wedges, sliding bolts, or the like

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  • the Prior Art Modular cabinet assemblies are known to the art, and include devices which consist of a plurality of individ ual rectangular cabinet members which are interlockable with other cabinet members. Numerous interlock constructions have been suggested, such as indexed projections and openings, as shown in U.S. Pat. No. 1,390,374 to Niles, issued Sept. 13, 1921; dovetailed projections and separate locking members, as shown in U.S. Pat. No. 2,752,215 to Peiss, issued June 26, 1956; and an indexing surface of tongues and grooves, such as that illustrated in the U.S. Pat. No. 3,552,817 to Marcolongo, issued Jan. 15, 1971.
  • SUMMARY My invention provides a modular unit which consists of a plurality of rectangular or the like shaped individual units, such as four, five, or six sided cabinet frames, where the side walls of the units are configured to provide interlocking surfaces.
  • the side walls are formed as a series of alternating raised portions and recessed portions.
  • the raised and recessed portions are wedge shaped from a front to a back of the modular units, and the raised portions are sized to index with the recessed portions of an adjacent unit.
  • the wedge shape of the raised and recessed portions provides a locking feature, so that while the raised portions of one unit may be slid into the recessed portions of another unit, the wedge action will prevent further movement in one direction when the raised portion is tightly seated in the corresponding recessed portion.
  • the side walls of the raised portions which define the sides of the recessed portions are angled.
  • a raised portion when a raised portion is received in a corresponding recessed portion, it will be wedged against movement in one direction by the wedge shape of the raised portion and the recessed portion, and will be locked against movement in another direction by the dovetail interlock of the side walls of the raised portions.
  • the dovetail interlock prevents separation of adjacent attached together modular units by preventing movement of the side walls of the modular units away from one another, while the wedge shape of the recesses and the raised portions from front to back will prevent separation of the modules by movement of the side walls in parallel planes with respect to one another in one direction. Further, a wedge shape provides that when the modules are assembled together. the front faces of adjacent modules and of all of the assembled together modules will lie in the same plane.
  • FIG. I is a perspective view of a plurality of modular units equipped with the locking device of this invention mounted on a common surface.
  • FIG. 2 is a side view of the assembly of FIG. 1.
  • FIG. 3 is a top planview of one of the side walls of one of the modular units of FIGS. 1 and 2 equipped with the locking means of this invention.
  • FIG. 4 is a fragmentary plan view taken along the lines IVIV of FIG. 3.
  • FIG. 5 is a fragmentary perspective view illustrating the interlocking device of this invention.
  • FIG. 6 is a view similar to FIG. I, with the units mounted to a common surface along a vertical plane.
  • FIG. 7 is a front plan view of a plurality of modular units assembled together.
  • FIG. 1 illustrates a spice rack assembly 10 or the like consisting of a plurality of individual rack modules I2, 13, 14, and 15, each of which is a rectangular cabinet having side walls 17, l8, l9, and 20, with the walls 18 and 20 forming top and bottom walls, and the walls 17 and 19 forming side walls.
  • the individual modules also have partial back panels 21 and 22 and partial front panels 23.
  • the individual modules are sized to receive interiorly thereof a plurality of spice bottles 24 or the like. 7
  • the preferred embodiment illustrated is a spice rack composed of a series of rectangular modules interconnected with one another
  • the invention can be practiced with other constructions, such as book shelving, cabinets, storage containers, or the like.
  • the spice racks are illustrated as having partial back walls or panels and partial front panels, this is only illustrative of a preferred embodiment which has been specifically designed to hold spice bottles.
  • the rack is attached to an undersurface of a member, such as a counter or a shelf 30, by indexing with a mounting strip 31 which may beaffixed to the undersurface 30 by means of screws 32 or the like.
  • Each of the outside surfaces of the side walls 17, 18, 19, and are formed with a series of alternating raised portions 40 and recessed portions 41.
  • the raised portions or ribs define the recessed portions or flutes, and the two portions are accounted for by differences in thickness of the material of the side walls.
  • Each of the portions 40, 41 is formed as a wedge shape, with the raised portions, in the illustrated embodiment, increasing in width from the front 45 to the back 46 of the module.
  • the recessed portions corresponding decrease in width from the front to the back of the module.
  • the shapes of the recesses and the wedges are the inverse of one another, whereby each raised wedge is codimensional with each recess wedge.
  • the recessed portions on one side wall are aligned with raised portions on the opposite side wall. In this manner, any two module units can be attached together along any of their side walls.
  • the wedge shape from the front face to the back face provides a positive blocking feature in that when the raised portion of one side wall is indexed with the wedged recess of the other side wall, the movement of one side wall with respect to the other side wall is limited. That is, when a raised portion is fully received in a recessed portion, the raised portion will no longer be movable towards the small end of the recessed portion.
  • modules such as the illustrated spice racks
  • reversing the shape of the wedges from those illustrated and placing the assembled modules against the wall will assure that they will never separate, because the wedge shape will prevent movement in the direction away from the wall, whereas the wall will prevent movement in the opposite direction.
  • the sides of the raised portion are angled with respect to the surfaces 61 of the raised portion and the base surface 62 of the recessed portion.
  • the side walls of the raised portions and of the recessed portions when indexed together, dovetail with one another, as illustrated in FIG. 5. This dovetail interfit will lock the modular units together against move ment in a plane normal to the plane of the side walls of the module.
  • FIGS. 1 and 6 illustrate a mounting strip 31 which has a series of raised portions and recessed portions 71 corresponding to the raised and recessed portions of the modules, whereby assembled together modules may be mounted to the mounting strip 31.
  • the mounting strip 31 can then be mounted to a wall surface or the like.
  • FIG. 7 illustrates that the individual modules 80, 81, 82, 83, and 84 may be attached to each other in staggered relation rather than in the side-by-side relation of FIGS. 1, 2, and 6.
  • each module side wall will index fully with an other module side wall or partially with two modules side walls lying in the same plane.
  • my invention provides an attachment device for modular units wherein the side walls of rectangular modular units are provided with a series of alternating raised and reduced portions of wedge shape having dovetailed or angled side walls.
  • This combination of alternating wedge shaped ribs and flutes provides an interlock in a plane parallel to the plane of the side walls.
  • by dovetailing the side walls of the ribs and channels locking is provided in a plane normal to the plane of the side walls.
  • my invention provides a more secure attachment than heretofore indexing dovetail slots and ribs, while providing a greater degree of ease of assembly and disassembly than prior devices which required external attaching strips or the like.
  • a modular unit assembly comprising a plurality of interfitting four-sided units with each side of each unit having alternating flutes and ribs extending continuously along the depth from a front to a back of the units, each rib having undercut side edges along the depth thereof, each rib increasing in width along the depth thereof at a wedge angle, and each flute decreasing in width along the depth thereof in complimentary relationship with the ribs, heights of the ribs and depths of the flutes being equal and the undercut edges of the ribs providing a dovetail interlock holding the ribs against the bottoms of the flutes and forming a continuous contact between outside surfaces of interfitting units and the mating wedge angles of the ribs and flutes locking the interfitting units in axially aligned relationv 2.
  • the assembly of claim 1 including a mounting strip having a length greater than the side of a unit, the strip having one surface formed with alternating ribs and flutes indexable with ribs and flutes of co-planar surfaces of a plurality of attached together units to provide a common mounting strip for the attached together units, a second surface, opposite the one surface of the strip being planar.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Abstract

An attachment device for modular units, such as rectangular cabinets, which are to be attached to each other along their side surfaces. The side surfaces are formed with wedge shaped raised portions defining the sides of wedge shaped recesses. The raised portions of one unit index with the recesses in another unit and the side walls of the indexing raised portions and recesses are angled in two planes to provide a lock.

Description

United States Patent 1191 Muller Dec. 3, 1974 ATTACHMENT DEVICE FOR MODULAR 3,552,817 1/1971 Marcolongo 312/107 UNITS 3,743,372 7/1973 Ruggerone 312/108 [75] Inventor: Richard Muller, Highland Park, Ill.
Primary Examiner-Casmir A. Nunberg [73] Asslgnee g i Archambult Pools Attorney, Agent, or Firm-Hill, Gross, Simpson, Van
ar santen, Steadman, Chiara & Simpson [22] Filed: Aug. 16, 1973 [21] Appl. No.: 388,986 ABSCT [52] 11.5. CI 312/108, 312/1 1 1, 312/245 An attachment device for modular units, such as rect- 312/349, 206/D1G. 29, 220/23.4 angular cabinets, which are to be attached to each 51 1111. c1. A471) 87/00, A47b 87/02 other along their side surfaces The side surfaces r [58] Field of Search 312/107, 108, 111, 245, formed with Wedge Shaped raised PortionS defining the 312/263, 234.5, 349; 46/25, 30, 31; 220/102, sides of wedge shaped recesses. The raised portions of r 23.4; 206/DIG. 29 one unit index with the recesses in another unit and the side walls of the indexing raised portions and re- 5 References Cited cesses are angled in two planes to provide a lock.
N T U ITED STATES PA ENTS 2 Claims, 7 Drawing Figures 3,131,829 5/1964 Mosser 220/102 ATTACHMENT DEVICE FOR MODULAR UNITS BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to attachment devices, and more particularly, to an interlocking surface attachment for modular assemblies.
2. The Prior Art Modular cabinet assemblies are known to the art, and include devices which consist of a plurality of individ ual rectangular cabinet members which are interlockable with other cabinet members. Numerous interlock constructions have been suggested, such as indexed projections and openings, as shown in U.S. Pat. No. 1,390,374 to Niles, issued Sept. 13, 1921; dovetailed projections and separate locking members, as shown in U.S. Pat. No. 2,752,215 to Peiss, issued June 26, 1956; and an indexing surface of tongues and grooves, such as that illustrated in the U.S. Pat. No. 3,552,817 to Marcolongo, issued Jan. 15, 1971.
These devices, in general, have required external and separate locking members, or they have locked only in one direction. In order to compensate for the fact that the prior art constructions which have utilized indexing side wall configurations have locked only in one direction, it has been known to provide pin and slot means, or the like, to lock in a second direction. Those devices which relied upon the use of external locking strips or the like have required additional parts to create the assembly. This results in a reduced ability to assemble numerous modules together in differing configurations. Those devices which have relied upon locking pins or projections or the like, are difficult to disassemble and reassemble.
It would therefore be an advance in the art ifa modular assembly system could be devised which locks in more than one plane, yet which is simple to assemble.
SUMMARY My invention provides a modular unit which consists of a plurality of rectangular or the like shaped individual units, such as four, five, or six sided cabinet frames, where the side walls of the units are configured to provide interlocking surfaces. The side walls are formed as a series of alternating raised portions and recessed portions. The raised and recessed portions are wedge shaped from a front to a back of the modular units, and the raised portions are sized to index with the recessed portions of an adjacent unit. The wedge shape of the raised and recessed portions provides a locking feature, so that while the raised portions of one unit may be slid into the recessed portions of another unit, the wedge action will prevent further movement in one direction when the raised portion is tightly seated in the corresponding recessed portion.
In order to prevent lateral withdrawal, the side walls of the raised portions which define the sides of the recessed portions are angled. Thus, when a raised portion is received in a corresponding recessed portion, it will be wedged against movement in one direction by the wedge shape of the raised portion and the recessed portion, and will be locked against movement in another direction by the dovetail interlock of the side walls of the raised portions.
The dovetail interlock prevents separation of adjacent attached together modular units by preventing movement of the side walls of the modular units away from one another, while the wedge shape of the recesses and the raised portions from front to back will prevent separation of the modules by movement of the side walls in parallel planes with respect to one another in one direction. Further, a wedge shape provides that when the modules are assembled together. the front faces of adjacent modules and of all of the assembled together modules will lie in the same plane.
It is therefore an object of this invention to provide an attachment device for modular constructions.
It is another and more important object of this inven-' tion to provide a side wall indexing attachment device for modular units wherein the side walls to be attached together have alternating wedge shaped recessed and raised portions dimensioned to index with one another, the side walls of the wedge shaped raised portions being angled to form dovetail locks.
It is another object of this invention to provide a modular assembly having locking means on the side walls of individual components of the assembly indexing with locking means on side walls of other components, the locking means locking in two planes.
It is yet another object of this invention to provide a modular assembly system for assembling rectangular units together with interlocking side walls, the system including a mounting strip indexable with the side walls of a plurality of assembled together rectangular units to mount the entire assembly to a common structure.
BRIEF DESCRIPTION OF THE DRAWINGS Other objects, features and advantages of the invention will be readily apparent from the following description of a preferred embodiment thereof, taken in conjunction with the accompanying drawings, although variations and modifications may be effected without departing from the spirit and scope of the novel concepts of the disclosure, and in which: 7
FIG. I is a perspective view of a plurality of modular units equipped with the locking device of this invention mounted on a common surface.
FIG. 2 is a side view of the assembly of FIG. 1.
FIG. 3 is a top planview of one of the side walls of one of the modular units of FIGS. 1 and 2 equipped with the locking means of this invention.
FIG. 4 is a fragmentary plan view taken along the lines IVIV of FIG. 3.
FIG. 5 is a fragmentary perspective view illustrating the interlocking device of this invention.
FIG. 6 is a view similar to FIG. I, with the units mounted to a common surface along a vertical plane.
FIG. 7 is a front plan view of a plurality of modular units assembled together.
DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 illustrates a spice rack assembly 10 or the like consisting of a plurality of individual rack modules I2, 13, 14, and 15, each of which is a rectangular cabinet having side walls 17, l8, l9, and 20, with the walls 18 and 20 forming top and bottom walls, and the walls 17 and 19 forming side walls. The individual modules also have partial back panels 21 and 22 and partial front panels 23. The individual modules are sized to receive interiorly thereof a plurality of spice bottles 24 or the like. 7
It will be appreciated that although the preferred embodiment illustrated is a spice rack composed of a series of rectangular modules interconnected with one another, the invention can be practiced with other constructions, such as book shelving, cabinets, storage containers, or the like. Further, although the spice racks are illustrated as having partial back walls or panels and partial front panels, this is only illustrative of a preferred embodiment which has been specifically designed to hold spice bottles.
The rack is attached to an undersurface of a member, such as a counter or a shelf 30, by indexing with a mounting strip 31 which may beaffixed to the undersurface 30 by means of screws 32 or the like.
Each of the outside surfaces of the side walls 17, 18, 19, and are formed with a series of alternating raised portions 40 and recessed portions 41. The raised portions or ribs define the recessed portions or flutes, and the two portions are accounted for by differences in thickness of the material of the side walls. Each of the portions 40, 41 is formed as a wedge shape, with the raised portions, in the illustrated embodiment, increasing in width from the front 45 to the back 46 of the module. The recessed portions corresponding decrease in width from the front to the back of the module. The shapes of the recesses and the wedges are the inverse of one another, whereby each raised wedge is codimensional with each recess wedge.
As illustrated, at the corners of the module half raised portions 50are provided, while at the corners on the opposite side half recessed portions 51 are provided.
In the preferred embodiment illustrated, the recessed portions on one side wall are aligned with raised portions on the opposite side wall. In this manner, any two module units can be attached together along any of their side walls.
The wedge shape from the front face to the back face provides a positive blocking feature in that when the raised portion of one side wall is indexed with the wedged recess of the other side wall, the movement of one side wall with respect to the other side wall is limited. That is, when a raised portion is fully received in a recessed portion, the raised portion will no longer be movable towards the small end of the recessed portion. By making the small end of the recessed portion adjacent the back 46 of the module, it will be assured that the back faces, and therefore also the front faces, of equal width modules will be aligned in a plane. Although it is still possible, in such a circumstance, for the raised portion to be moved towards the wider end of the wedge shaped recess, this possibility can be reduced by maintaining close tolerance of the sizing of the wedge shaped recesses and raised portions, so that when fully seated, a press-tit relationship will exist which will restrict movement.
Further, where the modules, such as the illustrated spice racks, are to be affixed against a wall, reversing the shape of the wedges from those illustrated and placing the assembled modules against the wall will assure that they will never separate, because the wedge shape will prevent movement in the direction away from the wall, whereas the wall will prevent movement in the opposite direction.
In order to prevent the modules from separating in a direction normal to the plane of the side walls, the sides of the raised portion, as illustrated at 16, FIG. 4, are angled with respect to the surfaces 61 of the raised portion and the base surface 62 of the recessed portion. Thus, the side walls of the raised portions and of the recessed portions, when indexed together, dovetail with one another, as illustrated in FIG. 5. This dovetail interfit will lock the modular units together against move ment in a plane normal to the plane of the side walls of the module.
FIGS. 1 and 6 illustrate a mounting strip 31 which has a series of raised portions and recessed portions 71 corresponding to the raised and recessed portions of the modules, whereby assembled together modules may be mounted to the mounting strip 31. The mounting strip 31 can then be mounted to a wall surface or the like.
FIG. 7 illustrates that the individual modules 80, 81, 82, 83, and 84 may be attached to each other in staggered relation rather than in the side-by-side relation of FIGS. 1, 2, and 6.
By making all raised portions and recessed portions of equal size around the outside of the rectangular module, each module side wall will index fully with an other module side wall or partially with two modules side walls lying in the same plane.
it will therefore be seen from the above that my invention provides an attachment device for modular units wherein the side walls of rectangular modular units are provided with a series of alternating raised and reduced portions of wedge shape having dovetailed or angled side walls. This combination of alternating wedge shaped ribs and flutes provides an interlock in a plane parallel to the plane of the side walls. In addition, by dovetailing the side walls of the ribs and channels, locking is provided in a plane normal to the plane of the side walls. Thus, my invention provides a more secure attachment than heretofore indexing dovetail slots and ribs, while providing a greater degree of ease of assembly and disassembly than prior devices which required external attaching strips or the like.
Although the teachings of my invention have herein been discussed with reference to specific theories and embodiments, it is to be understood that these are by way of illustration only and that others may wish to utilize my invention in different designs or applications.
I claim as my invention:
1. A modular unit assembly comprising a plurality of interfitting four-sided units with each side of each unit having alternating flutes and ribs extending continuously along the depth from a front to a back of the units, each rib having undercut side edges along the depth thereof, each rib increasing in width along the depth thereof at a wedge angle, and each flute decreasing in width along the depth thereof in complimentary relationship with the ribs, heights of the ribs and depths of the flutes being equal and the undercut edges of the ribs providing a dovetail interlock holding the ribs against the bottoms of the flutes and forming a continuous contact between outside surfaces of interfitting units and the mating wedge angles of the ribs and flutes locking the interfitting units in axially aligned relationv 2. The assembly of claim 1 including a mounting strip having a length greater than the side of a unit, the strip having one surface formed with alternating ribs and flutes indexable with ribs and flutes of co-planar surfaces of a plurality of attached together units to provide a common mounting strip for the attached together units, a second surface, opposite the one surface of the strip being planar.
* a a e

Claims (2)

1. A modular unit assembly comprising a plurality of interfitting four-sided units with each side of each unit having alternating flutes and ribs extending continuously along the depth from a front to a back of the units, each rib having undercut side edges along the depth thereof, each rib increasing in width along the depth thereof at a wedge angle, and each flute decreasing in width along the depth thereof in complimentary relationship with the ribs, heights of the ribs and depths of the flutes being equal and the undercut edges of the ribs providing a dovetail interlock holding the ribs against the bottoms of the flutes and forming a continuous contact between outside surfaces of interfitting units and the mating wedge angles of the ribs and flutes locking the interfitting units in axially aligned relation.
2. The assembly of claim 1 including a mounting strip having a length greater than the side of a unit, the strip having one surface formed with alternating ribs and flutes indexable with ribs and flutes of co-planar surfaces of a plurality of attached together units to provide a common mounting strip for the attached together units, a second surface, opposite the one surface of the strip being planar.
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