US3923161A - System of structural components for the construction of shelflike structures in frame racks - Google Patents

System of structural components for the construction of shelflike structures in frame racks Download PDF

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Publication number
US3923161A
US3923161A US493905A US49390574A US3923161A US 3923161 A US3923161 A US 3923161A US 493905 A US493905 A US 493905A US 49390574 A US49390574 A US 49390574A US 3923161 A US3923161 A US 3923161A
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United States
Prior art keywords
structural components
rails
keyhole
supporting
suspension
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Expired - Lifetime
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US493905A
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English (en)
Inventor
Rudolf Kaiser
Werner Karcher
Wolfgang Bringe
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Siemens AG
Siemens Corp
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Siemens Corp
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/01—Frameworks

Definitions

  • ABSTRACT A system of structural components for the construction of shelflike structure in frame racks in which the 10 Claims, 17 Drawing Figures Primary ExdminerRamon S. Britts Attorney, Agent, or FirmKenyon & Kenyon Reilly Carr & Chapin principal structural components are vertically arranged suspension rails supporting horizontal rails and buttonlike connecting elements joining the suspension and supporting rails without tools.
  • the system of structural components can be used generally for the construction of shelves, but in particular for the erection of supporting structures behind switchboards in mosaic technology.
  • This invention relates to structural components in general, and more particularly to an improved system of structural components for constructing shelves or the like.
  • shelflike structures are "frequently needed in engineering applications for the accomodation of instru-' ments such as measuring and operating devices.
  • lengths of structural sections are assembled for this'purpose to form frame racks and areprovided with means for solidly holding these devices in place.
  • Such a construction results in a relatively large amount of labor in joining the individual parts to each other, using screws, welding or other well known fastening methods requiring tools.
  • switchboards or control cabinets in which a multiplicity of indicating, measuring and operating devices is to be accommodated.
  • switchboard construction where the front of the board consists of individual elements fitted together in mosaic fashion, such as that disclosed in the German Offenlegungsschrift No. 2,237,831, a shelflike supporting structure is needed for heavy devices and/or for devices projecting far to the rear. These latter cannot be mounted safely enough because the front panel is not completely mechanically rigid.
  • FIG. '1 shows a first type of vertical suspension rail according to the presentinvention.
  • FIG. 2 shows a second type of vertical suspension rail.
  • FIG. 3 shows a horizontal supporting rail
  • FIG. 4 is a cross sectional view of one embodiment of the supporting rail of FIG. 3.
  • FIG. 5 is a cross sectional view of another embodiment of the supporting rail of FIG. 3.
  • FIGS. 6, 7 and 8 are respectively elevation, plan and cross sectional views of angle pieces used with the supporting rails.
  • FIGS. 9 and 10 are respectively plan and elevation views of a buttonlike connecting element according to the present invention.
  • FIGS. 11, 12 and 13 are views of a locking spring.
  • FIG. 14 is a cross sectional view illustrating the connection between a supporting rail and a suspension rail by means of the angle piece and the buttonlike connecting elements.
  • FIGS. 15 and 16 are respectively plan and elevation views of brackets to brace the support structure to the switchboard.
  • FIG. 17 is a perspective view of a switchboard in modularg grid form with a support structure behind it.
  • FIG. 1 illustrates a first type of suspension rail 1, made out of flat strip. Its upper end 2 isshaped so as to form a hook and its lower end provided with a cutout 3, the purpose of which will be described below in connection with FIG. 17.
  • the suspension rail 1 of this first type has rows of openings 4 in the shape of keyholes parallel to its short side arranged, in the illustrated embodiment, in groups of four spaced equal distances apart.
  • FIG. 2 shows a suspension rail 1' of a second type, also made out of flat strip, butonly about half as wide as the suspension rail 1 of the first type. Its upper end is provided with rectangular recesses 5 which are opposite each other in pairs and extend perpendicularly inward from the long edges. At the lower end of the suspension rail ltwo openings 4 in the shape of keyholes are provided, in a row. As may be seen from the figure the above-described arrangement of recesses 5 and keyhole-shaped openings 4 repeats over the entire length of the suspension rail 1. The latter may be cut off as required along dashed cutoff lines aa'.
  • FIG. 3 shows a horizontal supporting rail 6 and consists of U-channel material with the long edges bent inward. Its ends are provided with angular extensions 7 bent at right angles to load carrying surfaces. Each of the angular extensions 7 have two cutouts 8 which extend from the corner formed by the angle into the perpendicular leg and into which the buttonlike connecting elements 13 (see FIGS. 9, 14) can be hung which are captively mounted in the keyhole-shaped openings 4 of the suspension rails 1 or 1.
  • the system of structural components includes two types of supporting rails 6.
  • the supporting rails 61 of a first type are shown in cross section in FIG. 4.
  • the height of the legs of the U-channel is small relative to the width of the rail.
  • the supporting rail.62 of the second type which is intended for heavy loads or wide spans, and whose profile is shown in FIG. 5, the height of the legs of the U-channel approximately matches the width of the rail.
  • the upper opposing pair of recesses 5 of FIG. 2 are for supporting a rail 61 of the first type and the pair below that for supporting a rail 62 of the second type. T he spacing between the two pairs of recesses in the suspension rail 1' of the second type corresponds approximately to the leg height of the U-channel of the supporting rail 62 of the second type.
  • the angular extensions 7 of FIG. 3 are preferably designed as separate angle pieces 77, as shown in three views in FIGS. 6, 7 and 8.
  • the angle piece 77 is made out of flat strip material which is stamped and bent to have two legs 10 and 11 of approximately equal length.
  • the leg 10 is inserted into the open end of the U-channel of a supporting rail 6 and spot welded to it.
  • the impressed welding dimples 12 are provided for this purpose.
  • cutouts 8 mentioned above in connection with FIG. 3 and which extend, from the corner formed by the bend of the angle piece 77, into the leg, and the shape of which can be seen from FIGS. 6 and 8 are provided in the leg 11.
  • a short part 8' of the cutouts 8 also extends into the leg 10.
  • the buttonlike connecting element 13 is shown in FIGS. 9 and 10 in two views. It has a cylindrical part 14, the diameter of which is slightly smaller than the inside dimension of the narrow part of the keyhole-shaped openings 4 in the suspension rails l or 1. Adjacent to the center part 14 in mirror image in axial direction are the two cylindrical parts 15, the diameter of which is larger than that of the center part 14 and which corresponds approximately to the inside dimension of the cutouts 8 in the angular extensions 7 or angle pieces 77. Terminating both ends are end flanges 16, the diameter of which is slightly larger than that of the wide part of the keyhole-shaped openings 4.
  • the buttonlike connecting elements 13 may be made of two parts, for example, by making them come apart in a plane b--b' perpendicular to the centerline and providing a screw or snap-in connection in a center hole 17 to assemble the two parts.
  • FIG. 9 outlines diagrammatically such a snap-in connection designed using the well known snap fastener principle.
  • the central, spherical extension 18 of the upper part of the element 13 can be seen and is guided in the center hole 17 of the lower part of the element 13 and retained by means of two spring pins 19 driven into the center part 14 parallel to each other and transverse to the centerline.
  • a locking spring 20 as shown in FIGS. 11, 12 and 13. It consists of spring wire in U-shape, with right-angle bends up from the U-plane (see FIGS. 11 and 12).
  • the legs 24 of the locking spring 20 continue as the parts 22, bent at right angles and meeting in the center part 23 after two bends 21 outward and forward in a plane parallel to the legs 24.
  • FIG. 14 illustrates, in cross section, a connection between a supporting rail 6 and a suspension rail 1.
  • the leg 10 of the angle piece 77 welded to the end of the supporting rail 6, and the vertical leg 11 with one of the cutouts 8 with extension 8.
  • the buttonlike connecting element 13 is mounted in the keyhole-shaped opening 4 of the suspension rail 1.
  • the cutout 8, 8' in the leg 11 of the angle piece of the supporting rail 6 is hung into the connecting element 13.
  • the leg 24 of the locking spring 20 lies behind the inwardly bent long edge 9 of the supporting rail 6 with one of its projections 21 engaging, across the upper edge of leg 11, the upper part of the keyhole-shaped opening 4, against whose edge it rests.
  • brackets 25 of different lengths are provided which, as shown in FIGS. 15 and 16, are equipped at one end with pie-ced tabs 26 for haning into corresponding openings in the bar or angle elements of the switchboard panel, and with holes 27 for connection with the suspension rails l or 1 by means of the two-piece, buttonlike connecting elements 13.
  • FIG. 17 is illustrated the construction of a switchboard in modular grid form with a supporting structure according to the present invention behind it.
  • the switchboard panel 100 assembled in mosaic fashion from the basic elements according to the aforementioned German Offenlegungsschrift, is mounted to a frame rack 101 which consists essentially of angle frames 102, arranged perpendicular to the plane of the switchboard panel and interconnected through spacers in the form of tubular rods 103 extending parallel to the upper and lower edges of the switchboard 100.
  • Compartments 104 of different modular sizes are left free in the mosaic switchboard for the accommodation of measuring and operating devices such as devices 105, I06, and 107.
  • the relatively small measuring instruments 105 extend beyond the compartment depth of the switchboard structure only a small amount and require no further support
  • the relatively heavy instruments 106 and 107 such as recording instruments, project to the rear a distance which is a number of times compartment depth of the switchboard 100, thus making the safe mounting and fastening of the instruments in the non-rigid switchboard 100 questionable.
  • a support structure which can be constructed in a plane parallel to and behind the switchboard 100 from the components already described.
  • the suspension rails 1 of the first type disclosed above are shown with their upper hook shaped ends 2 hung into the rods 103 running parallel to the upper edge of the switchboard 100.
  • the rods 103 have circular grooves or notches 108 into which the hook shaped ends 2 of the suspension rails 1 drop.
  • their recesses 3 located at their lower ends are guided along the rods 103 of the frame rack 101 running parallel to the lower edge of the switchboardboard 100.
  • the vertically arranged suspension rails 1 of the first type can have fastened thereto the supporting rails 6 either of the type 61 of FIG. 4 or 62 of FIG. 5 as illustrated. Dividing the rows of keyhole-shaped openings 4 in the suspension rails 1 of the first type into groups of four permits mounting the supporting rails 6 equipped with the two cutouts 8 in the angular extensions 7 in three different positions in the horizontal plane.
  • a supporting rail 61 may be fastened in the first two keyhole-shaped openings 4 of a row, as shown in the left-hand part of FIG. 17.
  • the supporting rail 62 below it is fastened in the second and third openings of the rows, and the lowest supporting rail 62 in the last two openings 4 of a row.
  • the suspension rails l of the second type may be used to divide the sections formed by two adjacent suspension rails 1 of the first type. Rails 1 have their upper ends suspended from the supporting rails 6, 61 or 62 in the manner described above. Their lower ends which are equipped with the keyhole-shaped openings 4 in groups of two, are connected to shorter supporting rails 61 having their other ends fastened to a suspension rail 1 of the first type. Therefore, the number of combinations in which suspension rails and supporting rails, prepared in lengths to fit the modular grid scale, can be assembled is quite large.
  • the button-like connecting elements 13 or hanging techniques are used to attach the parts to each other. No tools whatever are required for assembly.
  • the braces 25 of FIGS. 15 and 16 are shown on the right hand side of the switchboard assembly of FIG. 17, the braces 25 of FIGS. 15 and 16 are shown.
  • the tongues at their front ends engage, as already described, openings in the angle and bar elements forming the switchboard, while their other end is connected to the suspension rails l by means of appropriate cutouts.
  • a system of structural components for the construction of shelf-like structures in a frame rack which includes a rod disposed parallel to the upper edge of the frame rack and a rod running parallel to the lower edge of the frame rack, including structural components which can be arranged vertically and horizontally in the frame rack and can be assembled without the aid of tools, the essential structural components comprismg:
  • suspension rails provided with rows of keyhole shaped openings parallel to their short side and including suspension rails of a first type having an upper end designed in a hook shape for hooking on to the rod disposed parallel to the upper edge of the frame rack and having a recess in the lower edge for guidance along a rod running parallel to the lower edge of the frame rack;
  • suspension rails include suspension rails of a second type having rectangular recesses opposing each other in pairs in the long edges at their upper end for hanging into the U-profile of said supporting rails and having at least two keyhole-shaped openings disposed in one row at their lower end.
  • supporting rails include supporting rails ofa first kind having a leg height which is short relative to the rail width.
  • supporting rails include supporting rails of a second type having a leg height which approximately matches the rail width.
  • buttonslike connecting elements comprise two parts separable in a plane perpendicular to the centerline and held together by connecting means.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Patch Boards (AREA)
  • Furniture Connections (AREA)
  • Assembled Shelves (AREA)
US493905A 1973-08-24 1974-08-01 System of structural components for the construction of shelflike structures in frame racks Expired - Lifetime US3923161A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2342866A DE2342866C2 (de) 1973-08-24 1973-08-24 Bauelementesystem zum Aufbau von Schalttafeln

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US3923161A true US3923161A (en) 1975-12-02

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US493905A Expired - Lifetime US3923161A (en) 1973-08-24 1974-08-01 System of structural components for the construction of shelflike structures in frame racks

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US (1) US3923161A (enrdf_load_html_response)
JP (1) JPS5421934B2 (enrdf_load_html_response)
BE (1) BE819143R (enrdf_load_html_response)
CH (1) CH575182A5 (enrdf_load_html_response)
DE (1) DE2342866C2 (enrdf_load_html_response)
FR (1) FR2241892B2 (enrdf_load_html_response)
GB (1) GB1478401A (enrdf_load_html_response)
IT (1) IT1046658B (enrdf_load_html_response)
LU (1) LU70778A1 (enrdf_load_html_response)
NL (1) NL7410839A (enrdf_load_html_response)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5582306A (en) * 1995-06-05 1996-12-10 Organizers Direct, L.L.C. Closet organizer
US5601016A (en) * 1995-06-07 1997-02-11 Witte; Walter Adjustable shelf system and method
US20130020272A1 (en) * 2011-07-18 2013-01-24 Kropveld Ronald Three-dimensional storage system
US10876649B2 (en) 2017-07-25 2020-12-29 Dresser, Llc Manufacture of remote control stations for use to operate actuators on a valve assembly

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US916273A (en) * 1908-11-23 1909-03-23 Amanda C Coons Shelf.
US2098828A (en) * 1936-07-24 1937-11-09 Arthur H Ludwick Display rack
US2162275A (en) * 1938-07-02 1939-06-13 Marcia W Samelson Garment snap
US2639043A (en) * 1946-04-17 1953-05-19 Aurora Equipment Co Shelf attaching and supporting means
US3029952A (en) * 1960-02-18 1962-04-17 Eastman Kodak Co Work hanger
US3158265A (en) * 1962-06-05 1964-11-24 Aluminum Co Of America Smoke rack
US3612290A (en) * 1969-08-12 1971-10-12 Aurora Equipment Co Releasable key clamp for a pallet rack
US3733755A (en) * 1971-02-25 1973-05-22 Snaith Inc W Bracket standard and base rail system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE567248C (de) * 1930-02-06 1933-01-03 Siemens & Halske Akt Ges Tafel zur Darstellung des Betriebszustandes technischer Anlagen
US1854808A (en) * 1930-04-10 1932-04-19 Leich Electric Co Map construction for power systems

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US916273A (en) * 1908-11-23 1909-03-23 Amanda C Coons Shelf.
US2098828A (en) * 1936-07-24 1937-11-09 Arthur H Ludwick Display rack
US2162275A (en) * 1938-07-02 1939-06-13 Marcia W Samelson Garment snap
US2639043A (en) * 1946-04-17 1953-05-19 Aurora Equipment Co Shelf attaching and supporting means
US3029952A (en) * 1960-02-18 1962-04-17 Eastman Kodak Co Work hanger
US3158265A (en) * 1962-06-05 1964-11-24 Aluminum Co Of America Smoke rack
US3612290A (en) * 1969-08-12 1971-10-12 Aurora Equipment Co Releasable key clamp for a pallet rack
US3733755A (en) * 1971-02-25 1973-05-22 Snaith Inc W Bracket standard and base rail system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5582306A (en) * 1995-06-05 1996-12-10 Organizers Direct, L.L.C. Closet organizer
WO1996039064A1 (en) * 1995-06-05 1996-12-12 Organizers Direct, Inc. Closet organizer
US5601016A (en) * 1995-06-07 1997-02-11 Witte; Walter Adjustable shelf system and method
US20130020272A1 (en) * 2011-07-18 2013-01-24 Kropveld Ronald Three-dimensional storage system
US8827090B2 (en) * 2011-07-18 2014-09-09 Holland Storage Systems Llc Three-dimensional storage system
US10876649B2 (en) 2017-07-25 2020-12-29 Dresser, Llc Manufacture of remote control stations for use to operate actuators on a valve assembly

Also Published As

Publication number Publication date
BE819143R (fr) 1975-02-24
FR2241892B2 (enrdf_load_html_response) 1977-03-18
JPS5421934B2 (enrdf_load_html_response) 1979-08-03
JPS5045940A (enrdf_load_html_response) 1975-04-24
DE2342866C2 (de) 1983-11-24
LU70778A1 (enrdf_load_html_response) 1975-01-02
GB1478401A (en) 1977-06-29
IT1046658B (it) 1980-07-31
NL7410839A (nl) 1975-02-26
DE2342866A1 (de) 1975-04-10
FR2241892A2 (enrdf_load_html_response) 1975-03-21
CH575182A5 (enrdf_load_html_response) 1976-04-30

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