EP1488113A1 - Unite de dilatation - Google Patents

Unite de dilatation

Info

Publication number
EP1488113A1
EP1488113A1 EP03709674A EP03709674A EP1488113A1 EP 1488113 A1 EP1488113 A1 EP 1488113A1 EP 03709674 A EP03709674 A EP 03709674A EP 03709674 A EP03709674 A EP 03709674A EP 1488113 A1 EP1488113 A1 EP 1488113A1
Authority
EP
European Patent Office
Prior art keywords
expansion unit
zone
cylindric
expansion
unit according
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Withdrawn
Application number
EP03709674A
Other languages
German (de)
English (en)
Inventor
Torben Dahl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daxtor ApS
Original Assignee
Daxtor ApS
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 Daxtor ApS filed Critical Daxtor ApS
Publication of EP1488113A1 publication Critical patent/EP1488113A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/0408—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body
    • B60Q1/0441—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights built into the vehicle body, e.g. details concerning the mounting of the headlamps on the vehicle body the housing being fastened onto the vehicle body using means other than screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2619—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic built in the vehicle body
    • B60Q1/2623—Details of the fastening means
    • 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
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
    • F16B13/0833—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation with segments or fingers expanding or tilting into an undercut hole
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/081—Bases, casings or covers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/12—Distribution boxes; Connection or junction boxes for flush mounting
    • H02G3/123—Distribution boxes; Connection or junction boxes for flush mounting in thin walls
    • 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
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/06—Releasable fastening devices with snap-action

Definitions

  • the present invention concerns an expansion unit and method for mounting an expansion unit and a tool suited for mounting the expansion unit according to the method.
  • expansion units used for fastening bolts and screws in different wall materials; for example, from the company Rawplug are known an entire series of plastic articles which by tightening a screw expands the unit and get hold in the surrounding material whereby the screw is fastened in the material.
  • expansion units that are particularly suited for fastening in and through plate materials. This includes e.g. traditional pop rivets or different types of plastic items that may be deformed at the back side of a plate, e.g. a plasterboard.
  • the present invention thus concerns an expansion unit for fastening, either in a recess in a material or in a plate element , the expansion unit being peculiar in being made up of two coaxially arranged cylindric elements, of which the outer cylindric element includes at least three zones in axial direction:
  • the inner cylindric element includes at least two zones: - a first zone in which at the outer side of the cylinder there is provided engagement means corresponding to and intended for engagement against the engagement means of the outer cylinder;
  • the corresponding engagement means may e.g. have the shape as reversed barbs or triangles, respectively, whereby a secure relative locking of the two element is ensured when the inner cylindric element is inserted in the outer and the engagement means are thus engaging.
  • the outer element is made up of three zones, a first zone which in the mounting condition is farthest away from the surface.
  • the axial extension of this zone may vary from application to application, as in cases where additional equipment, such as electric connector elements, switches and the like are to be mounted coaxially within the expansion unit, the first zone may advantageously be made with a certain extension in axial direction.
  • the first zone may be made so that it just fulfils the requirements that may be to strength with regard to material thickness.
  • the first zone has an axial extension allowing that necessary engagement means are provided at the inner side of the cylindric unit.
  • the deformation zone has an extension in axial direction, which is large enough that when the unit is loaded in axial direction, deflection of the deformation elements will occur, the deflection being necessary to hold the expansion unit solidly in the mounted condition.
  • the deformation means may be made by indentations being made in the wall material whereby is indicated where the item is to bend out under the axial load. Depending on which type of material is the case, these grooves in the material may be designed so that deformation occurs at a given load simultaneously with the unit maintaining necessary material thickness for remaining intact during and after expansion.
  • the extension of the deformation zone in axial direction is determined in dependence of how much the deformation elements are to project beyond the circumference of the unit.
  • the spacer zone serves to provide a certain distance between the surface in which the expansion unit is to be mounted and the engagement of the deformation means in the structure in which the expansion unit is to be mounted.
  • the spacer zone will typically have an extension in axial direction corresponding to the plate thickness.
  • the inner cylindric element includes at least two zones.
  • the first zone is made with engagement means corresponding to the engagement means at the inner side of the first element so that when the inner element is pushed coaxially into the outer element, it is possible to bring the two sets of corresponding engagement means into engage- ment, respectively, whereby the two cylindric elements are secured relatively to each other.
  • the second zone is a spacer zone corresponding to the spacer zone provided in the outer cylindric element for the same reasons.
  • one or more recesses are provided in the outer cylindric element in a part of the cylinder wall in the deformation zone.
  • the recesses in the inner and outer cylindric element are overlapping, there is thus free access from the inner of the cylindric element to the surroundings at e.g. the back side of the a plate or a ceiling covering.
  • the expansion unit according to the invention is used for mount-ing as electric assembly box or forms part in other relationship in an electric installation, it is thus possible to draw conductors and cables through the cutouts, whereby it becomes possible to mount joints and the like within the cavity in the expansion unit.
  • the expansion unit there may also be provided means whereby standard sockets and covering boxes and covers may be fastened against the expansion unit so that the expansion unit may form part of a normal, traditional electric installation in e.g. a house as a matter of course.
  • sockets are believed to be mounted in a wall
  • the expansion means and the deformation units are designed in such a way that they can engage the surrounding material and secure the expansion unit in the wall during further mounting and use of the installations .
  • the cylindric expansion unit has a cross-section of arbitrary shape.
  • the requirements to the cross-section are that by deformation in axial direction there is to be produced deformation units in the deformation zones along the pre-defined deformation means so that the deformation occurs outwards in relation to the longitudinal axis of the unit.
  • Particularly preferred cross-sectional shapes are circular, rectangular, quadratic, polygonal and triangular.
  • the unit may advantageously be made as a circular item with an outer diameter preferably between 45-100 mm, or more preferred 50-75 mm, where the first zone and the deformation zone in axial direction have a total extension of preferably 30-100 mm, more preferred 40-80 mm and most preferred 50-65 mm.
  • the unit may advantageously be made as a circular item with an outer diameter preferably between 45-100 mm, or more preferred 50-75 mm, where the first zone and the deformation zone in axial direction have a total extension of preferably 30-100 mm, more preferred 40-80 mm and most preferred 50-65 mm.
  • regard has to be made to the free space behind possible ceiling covering as typically there may be other installations or considerations that prevent installation boxes from having an arbitrary free depth.
  • the extension of the spacer zone may advantageously be selected between 3 and 50 mm, more preferred 5 - 35 mm, and most preferred 10 -25 mm.
  • the spacer zone is provided in some embodiments so that the deformation zone is arranged at the inner side of a plate element.
  • a typical ceiling covering will be made of plate materials with thickness varying between 3 and 50 mm so that the spacer zone is to be chosen to ensure that the deformation zone is disposed at the back side of that ceiling covering.
  • the expansion unit is to be mounted in a solid construction, it is the task of the spacer zone to ensure that the deformation zone is disposed at required distance from the surface so that by the deformation, so large stresses do not arise in the material so that rupture or deformation of the material in the surface can occur.
  • the expansion unit is used for making branches in pipes.
  • the spacer zone is corresponding very closely to the material thickness of the pipe, whereby a fixed and tight branching may be provided.
  • the expansion unit according to the invention is to be produced in large amounts in a number of standard sizes.
  • a series of spacer elements with the same cross-sectional shape as the outer cylindric element. These spacer elements are used for adapting the extension of the spacer zone in axial direction. By inserting a number of spacer elements, standard expansion units may thus be adapted to individual needs.
  • the spacer elements have the same cross-sectional shape as the outer cylindric element, and preferred lengths in axial direction are preferably between 1- 15 mm, more preferred between 2 -10 mm and most preferred between 3 - 7 mm.
  • the spacer elements are mounted by choosing the correct number of spacer elements and then mount these around the inner element before the inner cylindric element is pushed into the outer cylindric element, so that the spacer elements become locked between the free outer edge on the outer element and holding means arranged on the inner element.
  • the spacer elements may be designed as one piece with the elements with indicated separation lines that may easily be broken, possibly by means of a box cutter or the like.
  • the expansion unit may relatively easily be adapted to varying plate thicknesses.
  • the outer cylindric element is provided with a flange arranged at the free edge of the spacer zone.
  • the flange has larger outer dimension than the cylindric element so that the flange projects beyond the outer dimensions of the cylinder.
  • the inner cylindric element is pro- vided with a flange arranged along the fee edge of the spacer zone.
  • This flange may advantageously be shaped as an L-shaped flange so that the L-shaped flange will overlap the flange arranged on the outer cylinder.
  • the L-shaped flange thus serves two purposes. It is a retainer so that the inner cylindric element will not be drawn into the hole due to the spring force that will arise by deformation of the outer element in axial direction.
  • the other task is to provide a nice end, as the L-shaped flange will cover the flange arranged on the outer element as well as possible scratches, peelings or similar damages that may have appeared by formation of the hole to the expansion unit.
  • the expansion unit is made in plastic or other elastic materials
  • the outer element when the outer element is actuated in axial direction so that the deformation elements expand along the deformation means, there will be produced a force in axial direction as the outer element will attempt to counteract the axial load.
  • This is a kind of elastic force as most plastic materials present elastic properties at this type of load.
  • the force is transmitted via the corresponding engagement means to the internal cylinder, the internal cylinder transmitting the forces by means of flanges and distributing these along the flange circumference to the sur- face. In this way, the expansion unit is locked in expanded condition in relation to the surface and the cutout.
  • the engagement means are arranged in two to six sections, uniformly distributed along the circumference of the cylindric elements, and where all sections with engagement means totally constitute less than half the total circumference.
  • This aspect is particularly important for expansion units with circular cross-section as it hereby becomes possible to loosen and release the expansion unit from the mounting condition. This is provided by turning the inner element relative to the outer element, whereby the engagement means are displaced so that they are dis- engaging, whereby the inner element may be taken out. After taking out, it will be possible to return the expansion in the outer element, after which the outer element can be taken out from the cutout.
  • the expansion unit may be made in plastic, e.g. by plastic moulding, injection mould- ing or another suited method, but also other materials may be suited for making expansion unit according to the invention. Including, among others, aluminium, copper, modified and/or reinforced plastic and rubber materials and other materials in which it is possible to pre-make a deformation line so that one may ensure that the expansion of the unit will occur in the pre-defined zone.
  • tension means are provided in the outer element in the first zone with which expansion of the deformation zone may be provided.
  • the outer element is provided with a bottom that closes the cylinder so that the cylinder will appear as a can-like element.
  • a tension means e.g. in the form of a flap.
  • the tension means may also be a elongated pin that stands perpendicularly to a bottom or cross-bar in the outer cylinder, the pin having an axial length so that it is possible to grip the pin when the outer cylinder is inserted in the recess. By pulling in axial direction in the pin there is thus possibility of deforming the outer cylindric element as described above.
  • the connections between the tension means and the bottom may be designed so that they are disrupted at a given load. Hereby is ensured that the cylindric element is not overloaded at the mounting.
  • a suited tool may e.g. consist of two parts that are mutually displaceable.
  • the first part includes a handle part at one end and engagement means at the opposite end.
  • the engagement means may be designed so that they efficiently may engage e.g. the bottom of the expansion unit or suited projections provided near the bottom of the expansion unit.
  • the second part includes a retainer device, e.g. in the shape of a ring having two sections: a first section that fits well within the outer end of the expansion unit, and a second section integrated with the first part, which is bearing on the outer end of the expansion unit.
  • the ring is connected with a second handle part.
  • a spring whereby the engagement means may be kept projected relative to the second handle part.
  • the tool is then placed in an expansion unit by using the engagement means for en- gaging engagement measures arranged therefor inside the unit.
  • the retainer device has hereby engaged the outer end of the expansion unit.
  • the invention furthermore includes a method for mounting an expansion unit consisting of two coaxially arranged elements as described above, where the coaxial element ins inserted into a pre-shaped opening;
  • the outer element is expanded by applying an axial load on the element, whereby a predefined expansion zone expands
  • the expansion unit has been mounted in a opening, be it a plate item or a cutout in a more solid wall.
  • a cover can be made for the expansion unit, the cover being made so that it is securely fixed in the opening but enabling removal in case access is to be provided to the cavity lying behind.
  • the invention also includes an arrangement for securing wires and the like, where the arrangement may be mounted on e.g. the sidewall within the expansion unit.
  • the fastening device includes two parts. In the first part, a cable or a wire may be clamped.
  • the first part consists of a pivotable lock member which may be pivoted down against a wire or cable after being placed in a small recess in the base so that the wire or cable becomes pressed down against the bottom in the recess.
  • a slot in which barbs are arranged is provided in the pivotable lock part.
  • a band-like device which is dimensioned so that it may be inserted in the slot on the pivotable lock part.
  • the band device there is also provided barbs, so that when the band is inserted in the slot, the barbs on the lock part and the band device, respectively, will engage, whereby it does not become possible to loosen the lock part by turning it back. In this way, a cable or wire may thus be effectively locked in this arrangement.
  • a suspension e.g. in the shape of two parallel pins around which the wire or cable may be arranged for possibly having the right length or for being further secured.
  • the above mentioned securing part is a loose part that may be retrofitted in the expansion unit when regarded necessary, or the part may be retrofitted in already existing installations.
  • the expansion unit has been explained inter alia with reference to an existing example, where the expansion unit is used as a part of an electric installation.
  • the expansion unit according to the invention possesses many advantages, which makes it particularly suited for use as electric connection box, lighting point, box for sockets, lamp installation etc.
  • the principle i.e. two coaxially arranged cylindric elements may also be used for mounting inserts inter alia for lamps and light for cars, trailers and other transport material as lock insert for wheel hub bearings, where the where the wheel is secured to an axle in this way, lock inserts for axles, axel pipes, bolts, suspension systems, bearing races etc., which objects are mounted on or to a larger steel structure.
  • the expansion unit may be used as insert or as assembling element in the assembling of pipes of e.g. plastic materials, the unit is also suitable as finish on different pipes as the expansion secures the plug in the pipe.
  • an expansion unit according to the invention may in that way replace traditional bolts or screw assemblies.
  • Another application where the invention may advantageously be used, is by mounting of lights on e.g. cars.
  • the rear lights on a lorry are typically fitted in a bar made of an aluminium section.
  • the lights are fitted by screwing into the section by means of fit- tings in the lights.
  • the outer cylinder tube is fitted in a recess in the lighting bar.
  • At the bottom of the cylindric tube there may be provided one or more contact means.
  • the inner cylindric tube constitutes the light itself in this em- bodiment.
  • Fig. 1 shows an exploded view of the invention
  • Fig. 2 shows the invention fitted in a plate
  • Fig. 3 shows the invention fitted in a plate
  • Fig. 4 shows a cross-section of the fitted unit
  • Fig. 5 shows the inner element
  • Fig. 6 shows the tool
  • Fig. 7 shows the locking device
  • Fig. 8 shows an isometric view of the invention in the fitted condition.
  • Fig. 1 is illustrated an expansion unit according invention in exploded view.
  • the expansion unit consists of two coaxially arranged cylindric elements 1, 2.
  • Fig. 1 is outlined that the expansion unit is to be fitted in a plate 3.
  • the outer cylindric element 2 is already inserted in the recess in the plate 3.
  • the flange 4 on the outer cylindric element 2 abuts on the surface of the plate material 3.
  • engagement means 5 Internally in the outer element 2 there is provided engagement means 5.
  • the engagement means are in the shape of triangular profiling at the internal sur- face of the cylindric element 2.
  • Corresponding engagement means 6 are provided at the outer side of the inner element 1, so that the engagement means will engage each other when the inner element 1 is inserted into and thereby is coaxially arranged in the outer element 2.
  • An L-shaped flange 8 is arranged on the free edge of the space zone 7 on the inner element 1. By telescoping the inner and outer element, the flange 8 will cover the flange 4 as illustrated in Fig. 2.
  • a plug 9 in the free open- ing of the expansion unit. This plug serves to cover the access to the cavity inside the expansion unit.
  • Fig. 2 is illustrated how the ready-mounted expansion unit according to the invention will appear from the front side of a plate element.
  • the L-shaped flange 8 is visible and the plug 9 is mounted in the opening of the hole.
  • Fig. 3 is an illustration corresponding to Fig. 2, but seen from behind.
  • the plate element 3 is here seen from the rear, of which clearly appears that the expansion means 10 are deformed so that their outer circumference is larger than the outer circumfer- ence on the element 2.
  • the engagement means 6 are vaguely seen on the inner element 1.
  • Tension means are arranged at the bottom of the expansion unit in connection with the outer ring, so that when the inner element is arranged in the outer element, and the outer element is subsequently actuated for tension in axial direction, the expansion means 10 will be deformed simultaneously with the engagement means going into corresponding engagement, whereby deformations produced due to axial load will become locked.
  • the engagement means 11 in this example are designed so that they may be gripped with a pair of pliers and drawn out of the surface of the plate element 3.
  • Fig. 4 is illustrated a finished assembly, where it is clearly seen that the inner element 1 engages corresponding engagement means 5, 6 with the outer element 2.
  • the expansion of the expansion elements 10 is locked so that the outer element is gripping firmly around the plate element by means of the flange 4 and the expansion means 10.
  • the L-shaped flange 8 covers the flange 4 and is simultaneously functioning as retainer, whereby the axial load that has caused the expansion and the distending of the expansion means 10 becomes locked by means of the corresponding engagement means 5, 6.
  • the outer element is designed so that the defor- mation means 11 in the shape of the material thickness in the circumference of the outer element has been reduced at three points whereby lines appear about which the material will bend when subjected to axial load.
  • the deformation means or bending lines are designed so that the bending line closest to the free edge or the flange 4 on the outer element determines the extension of the spacer zone on the outer element. By varying this distance, the expansion unit may thus be adjusted to different plate thicknesses 3.
  • Fig. 5 the inner cylindric element 1 is illustrated. From this clearly appears that along the free edge there is arranged a flange 8 and that the engagement means 6 are arranged at the outer side of the cylindric element, and furthermore that these are provided as sections distributed uniformly along the circumference of the cylindric element. The total circumference of the engagement means constitutes less than half the total circumference. Correspondingly, at the inner side of the outer cylindric element 2 there is provided engagement means arranged sectionally and uniformly around the internal circumference of the element. When the two cylindric elements are to be telescoped, it is therefore to be ensured that the engagement means are pushed in over each other so that they engage correspondingly.
  • the engagement means By turning the inner cylindric element in relation to the outer cylindric element, the engagement means will be released, whereby the inner element can be taken out.
  • the deformation of the deformation means 10 can go back, whereby the expanding effect disappears and the outer element can be taken out of the plate 3.
  • Fig. 1 there are outlined recesses 12 in the outer element 2.
  • recesses 12 there are outlined recesses 12 in the outer element 2.
  • These recesses can e.g. be indicated by the material thickness being substantially reduced, whereby the material easily may be pressed out so that a recess appears in the inner element 1, corresponding to the recesses in the outer element 2.
  • the plug 9 as illustrated in Fig. 1 and 4 may be provided with resilient retention means 13 whereby the plug 9 after insertion in the opening will be relatively firmly seated due to the resilient retention means 13 that may engage retainers 14 provided for that purpose at the inner side of the innermost element along the free outer edge.
  • the tension element 11 may also be in the shape of a long pin which is arrange so that in the mounting condition there will be a projecting part that protrude beyond the surface plane of the plate 3 so that the pin can be gripped and drawn and thereby provide the axial load implying expansion of the expansion means 10.
  • Both the tension ele- ment 11 and the alternative embodiment where the tension element is made as a long pin can be designed with a fracture zone which is dimensioned to break when it is ensured that the needed expansion is provided by means of application of the axial force. By furthermore having this fracture zone it may also be ensured that the axial force does not become so great that it may damage the expansion unit.
  • the expansion unit may advantageously be made in plastic as this material provides the elastic properties necessary for some of the variants of embodiments described above. Besides, plastic is a cheap and well-known material, and particularly by electric installations one may advantageously use plastic as this has a high electric insulation ability.
  • the expansion unit may, however, also be made in alternative materials, e.g. different metals, depending on the applications.
  • the expansion unit is shown with a circular cross-section, but any cross-sectional shape, including oval, four-sided, triangular, polygonal may also be used when there is provided for the deformation means being provided in such a way that these will expand when the outer cylindric element is subjected to an axial load.
  • Fig. 6 illustrates a tool that may be used for mounting circular expansion units, e.g. electric boxes as described above.
  • the tool 14 is inserted into the expansion unit so that the engagement means 15 engage engagement means suited therefor provided in the expansion unit.
  • the retention device 16 also engages the free end of the expansion unit, so that a part of the retention device 17 fits into the expansion unit and a second part 18 is resting on the rim of the expansion unit.
  • the two handle parts 19, 20 against each other, the distance between the retainer device 16 and the engagement means, whereby the side length of the expansion unit is reduced and thereby the desired expansion and thereby securing of the expansion unit, e.g. in a plate, occur.
  • a spring 21 that fixes the two relatively movable parts, i.e. the engagement means in relation to the retainer device, so that these are always disposed with the greatest relative distance.
  • the tool may also advantageously be made in plastic materials.
  • a securing arrangement according to the invention that may be retrofitted in an expansion unit according to the invention or be retrofitted in already existing structures. Furthermore, the securing arrangement may be an integrated part of the inner element.
  • the locking device 22 includes a base part 23 at which is arranged a pivotable lock member 24. In the base there is furthermore provided a recess 25 so that a wire or cable that is to be used in connection with the above lock device has a diameter which is larger than the recess.
  • a band device 26 which fits into a slot 27 in the lock mem- ber.
  • barbs 28 that engage corresponding barbs 29 provided on the band device.
  • a suspension e.g. consisting of two protruding arm parts 30 about which the wire or cable may be fastened further.
  • Fig. 8 is illustrated an expansion unit according to the invention, which is provided in a plate part 31.
  • a part of the expansion unit has been cut away, whereby it becomes possible to see the locking arrangement in its mounting condition on the wall of the expansion unit.
  • the bottom in the expansion unit 32 is made with an opening 33 which has a design as to correspond with the engagement means on the mounting tool.
  • the mounting tool may be brought into engagement with the bottom of the box, after which the desired expansion may be performed by squeezing the two handle parts together.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Clamps And Clips (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Dowels (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

L'invention concerne une unité de dilatation et un procédé pour monter une unité de dilatation. L'unité est constituée de deux éléments installés coaxiaux, l'élément coaxial étant inséré dans une ouverture préformée, l'élément externe étant écarté par l'application d'une charge axiale à l'élément, et la dilatation est bloquée par l'insertion de l'élément coaxial interne. Les moyens d'accrochage correspondant aménagés des côtés interne et externe, respectivement, des éléments coaxiaux s'accrochent l'unité de dilatation et la bloquent dans l'ouverture.
EP03709674A 2002-03-27 2003-03-17 Unite de dilatation Withdrawn EP1488113A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA200200478 2002-03-27
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PCT/DK2003/000170 WO2003081054A1 (fr) 2002-03-27 2003-03-17 Unite de dilatation

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EP1488113A1 true EP1488113A1 (fr) 2004-12-22

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EP2602888B1 (fr) * 2011-12-09 2015-11-25 Schneider Electric Industries SAS Verrouillage libérable avec capacité d'ajustement d'angle
FR3017498B1 (fr) * 2014-02-07 2016-02-19 Legrand France Appareillage electrique a encastrer
EP3059822B1 (fr) * 2015-02-20 2021-11-03 ABB Schweiz AG Ensemble formant boîtier d'installation électrique
FR3034493B1 (fr) * 2015-03-31 2018-08-17 Hellermanntyton Kit comprenant un dispositif de coiffage de spot encastrable et un dispositif d'installation et procede d'installation d'un dispositif de coiffage de spot encastrable.
FR3062529B1 (fr) * 2017-01-31 2019-03-29 Legrand France Boite electrique encastrable dans des cloisons d'epaisseurs differentes
EP3613116B1 (fr) 2017-04-18 2021-06-16 Oblamatik AG Dispositif d'installation avec une cheville et un support pouvant être vissé la dedans pour l'installation des appareils à montage encastré
EP3799236A1 (fr) * 2019-09-26 2021-03-31 Schneider Electric Industries SAS Ensemble bague d'espacement télescopique pour boîte d'installation électrique
DE102020203800A1 (de) 2020-03-24 2021-09-30 Hansgrohe Se Sanitäre Wandeinbau-Anschlussboxeinheit mit elektrischer Leitungsdurchführung
DE102020203794A1 (de) 2020-03-24 2021-09-30 Hansgrohe Se Wandeinbau-Anschlussboxeinheit mit Funktionsflächenkörper
DE102020203792A1 (de) 2020-03-24 2021-09-30 Hansgrohe Se Wandeinbau-Anschlussboxeinheit
DE102020203797A1 (de) * 2020-03-24 2021-09-30 Hansgrohe Se Wandeinbau-Anschlussboxeinheit mit Verlängerungshülse

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AU2003214029A1 (en) 2003-10-08
WO2003081054A1 (fr) 2003-10-02

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