Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B5/00—Clamps
  • B25B5/06—Arrangements for positively actuating jaws
  • B25B5/10—Arrangements for positively actuating jaws using screws
  • B25B5/104—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element
  • B25B5/105—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element with one end of the lever resting on a table and the screw being positioned between the ends of the lever
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders

Definitions

• the present invention relates to a device for securing an overlap adhesive joint between two workpieces, particularly a joggled joint.
• the device in accordance with the invention is intended for use in conjunction with joining vehicle body panel parts, particularly in conjunction with the fastening of so-called economy panel parts.
• the other jack screw is intended for being tightened into engagement with the other panel part so as to give the desired clamping effect.
• This known device lacks versatility and is difficult to apply so as to give a desired well balanced clamping or compressing effect. It is not suitable for securing an overlap adhesive joint between thin vehicle body panel parts.
• the object of the present invention is to provide a simple securing device for overlap adhesive joints, the device being simple, cheap, easy to apply and handle, as well as being extremely adoptable and adjustable, i.e. it has the character of an uncomplicated, easily handled and cheap tool with the obvious advantages pertaining thereto.
• the above-mentioned object is achieved with a device which, in accordance with the invention, has the distinguishing features disclosed in the accompanying claims.
• the inventive device is thus essentially distinguished in that it includes a bridge element, one.end of which is adapted such as to enable supporting engagement at a distance from the joint against the surface of the first workpiece, its other end being adapted for enabling the achievement of joint securing pressure in the region of the joint against the surface facing towards the device of the second overlapping workpiece; an attachment plate arranged for enabling removable attachment, with the aid of an adhesive joint, to said surface of the first workpiece in the region between the joint and the position of engagement of said first end against the surface of the first workpiece; and means for lockably connecting and tighten the bridge element and the attachment plate to urge the bridge element applied for securing purpose against the workpieces with said first end engaging against the first workpiece and said second end achieving securing pressure on the joint determined by the amount of tightening.
• bridge element is intended to have a wide sense in the present context,
• a device in accordance with the invention may be mounted substantially over the first workpiece, because only an end portion of it needs to be situated above, and act on, the joint part of the second workpiece.
• the device is suitably elongate and narrow (several devices can then be easily mounted parallel to each other or side by side at suitable mutual spacings), although other configurations are of course conceivable.
• the bridge element and said connection means are adjustable relative each other.
• said connection means are displaceable along the bridge element in its longitudinal direction, at least to a limited extent, and the bridge element is rotatable about the connection means in each displaced position.
• the bridge element and said connection means are adjustable relative each other such that the bridge element is swingable or tiltable relative said connection means generally in a main plane for the bridge element, at least to a limited extent. This will give an additional possibility of adaption to various levels or inclinations of the places where the bridge element is to engage the plates.
• the selection of the location where the attachment plate is adhered is not at all critical for the good function of the device, while any kind of adjustment of the bridge element position and thereby the position of the securing pressure exercised on the joint will be possible, both during fitting-up and afterwards.
• the attachment plate is given an area such that on its being loaded there is no deformation of the coacting work piece, even if this is a thin vehicle body panel, and such that the tensional stress in a direction away from the workpiece caused by the tightening of the device, can be taken up to a required extent.
• the bond of the attachment plate can be suited so that the plate will be released if an attempt is made to tighten the device too much, which could give deformation in the joint.
• an adhesive agent is used which has a substantially lower resistance to peeling or shearing than to pure tensional force away from the attachment surface on the workpiece.
• an adhesive agent is used which has a substantially lower resistance to peeling or shearing than to pure tensional force away from the attachment surface on the workpiece.
• Adhesion of the attachment plate can be effected to advantage with the use of double-sized adhesive tape, which can easily be applied to the bottom of the attachment plate each time it is used.
• an attachment plate adhered in accordance with the invention signifies that the workpieces only need to be prepared minimally before applying the device. All that is required is that the surface of the first workpiece is cleaned (even this might not be necessary) sufficiently for the adhesive to take.
• the securing pressure on the joint can be achieved by the end of the bridge element engaging directly against the joint, or via a separate intermediate press element. In the latter case there will be further adjustment and force distribution possibilities, since the position of the press element under the urging bridge element will be freely selectable.
• the press element is suitably made elongate and placed along the joint transverse the bridge element, whereby the pressure from the bridge element can be distributed along the joint in accordance with the number of joint engagement locations exhibited by the press element.
• Fig. 1 is a schematic side view of a device in accordance with the invention applied for securing a joggled adhesive joint between two vehicle body panel parts.
• Fig. 2 is a schematic view from above of the device in Fig. 1.
• Fig. 3 is a schematic side view of the device in Fig. 1 supplemented by a press element and applied for securing another joggled adhesive joint between two body panel parts.
• Fig. 4 is a schematic view from above of the device applied according to Fig. 3.
• Fig. 5 is a schematic partial view from above of an elongate joggled adhesive joint, secured by utilising a plurality of devices in accordance with the invention.
• Figs. 1 - 5 illustrate joining, while using a device according to the invention, two panel parts, either 1 and 3 or 2 and 4, the parts being substantially flat at the joint itself in the illustrated embodiments and which may be included in a vehicle body, for instance.
• the first panel part 1 or 2 is thus a part of the body proper, while the other panel part 3 or 4 is an economy panel part for replacing a part of a body panel damaged by rust.
• the respective joint is a joggled joint, the edge area of the part 1 or 2 being joggled to form a continuous flat flange or step 5 against which the edge portion 7 of the part 3 or 4 is adhered with a thin adhesive layer 9 brushed on in the form of a covering film.
• the step which can be achieved in a manner known per se with a joggling tool, corresponds to the thickness of the part 3 or 4 plus the thickness of the adhesive layer, so that the outside of the part 3 or 4 will be flush with the outside of the part 1 or 2 at the joint.
• the width of the joggled part or flange 5 is typically about 20 mm.
• the thickness of the adhesive layer 9 is typically 150 to 200 ⁇ m.
• the adhesive is a 2-component polyurethane adhesive which sets already at about 20°C.
• the thickness of the panel sheet is typically about 1 mm.
• Such a device includes a bridge element 11, an attachment plate 13 and connection means 15, 17.
• the bridge element 11 is a straight beam element and comprises two spaced, mutually parallel flats 19,20 on edge, with downwardly, dependent end elements 21,22, also of flats, at either end.
• the end elements 21,22 are welded to the flats 19,20, thus forming a rigid connection thereof.
• the end elements 21,22 are at right angles to the plane of the flats 19,20.
• the end elements 21,22 are of the same length and are downwardly cut square to give the best engagement surface.
• extension element 23 downwardly on the end element 22, this also being in the form of a straight flat fastened parallel to the element 22 and rotatably with the aid of a journalling pin 25.
• the element 23 is mounted with unequal distances to its ends so that two different extension lengths can be obtained.
• the mounting is also situated sufficiently high up on the end element 22 so that the element 23 is entirely above the lower engagement surface of the end element 22 after being rotated 90° (see Fig. 3).
• the attachment plate 13 is a flat disc, and on its underside it is provided with double-sized adhesive tape 29 for attaching the plate to the panel part 1 or 2.
• the diameter of the rod 15 is somewhat less than the spacing of the flats 19,20.
• a wing nut 17 is threaded on to the rod 15 and together they form means for connecting the attachment plate 13 and bridge element 11.
• the attachment plate 13 is attached at a suitable distance from the adhesive joint 5,7,9.
• the bridge element 11 is now fitted and the wing nut 17 loosely threaded on.
• the bridge element 11 may now be readily both displaced and rotated relative the now fixed rod 15 so that the bridge element end 22,23 can be suitably placed above the joint.
• Use of the extension element 23 in one of its extension positions is depicted in Fig. 2, for providing securing pressure to the joint.
• the device according to the invention can have a low configuration. This is of importance when applying the device on vertrical panel parts (this often being the case in conjunction with vehicle body pa nels), because then the centre of gravity of the device will lie close to the panel parts which means that the bending moment on the attachment plate caused by the force of gravity will be low.
• a variation of the device in accordance with the invention is illustrated in Figs. 3 and 4, a separate press element 35 being utilized for transferring the compressive force from the bridge element 11 to the joint.
• This separate element 35 is a straight, square hollow tube, which is placed under the compressive end of the beam elements 19,20 at right angles to the longitudinal direction of the bridge element 11.
• the element 35 is provided at either end with two abuttment surfaces 37,38 on its underside. It will be understood that the element 35 may easily be given a desired location relative the bridge element 11, thereby achieving a desired distribution and spread of the securing pressure. As will be seen in Fig. 3, the elements 22 and 23 have no function in this case, and they could thus be eliminated.
• FIG. 5 there is schematically illustrated how a plurality of devices in accordance with the invention can be used for securing a long adhesive joint of the kind already illustrated.
• a device Furthest to the right where the joint begins, there is utilized a device in the way illustrated in Fig. 1.
• the devices successive to it are utlized in the way illustrated in Fig. 3. It will be understood that even if all the devices in Fig. 5 are illustrated as being applied at right angles to the longitudinal direction of the joint they could have some other angle if so desired, e.g. due to projecting obstacles, lack of space for attaching the plate 13 etc.
• a device in accordance with the invention is extremely simple to handle, apply and adjust; that it has an uncomplicated structure which is cheap and which can be readily dimensioned for different loads; that it can be used without the workpieces involved being subjected to any deformations or other damage; that it is cheap and requires a minimum of consumption material (only adhesive); that it does not require any external power supply at all, or any other extraneous aids, such as welding, pop rivets, screws etc; that as a result of its implementation it is usable even where the adhesive joint is difficult of access; and not least, that it gives a very good securing effect, particularly in conjunction with joggled joints.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20361296

Family Applications (1)

Country Status (5)

Families Citing this family (4)

Family Cites Families (5)

• 1985
  • 1985-09-04 SE SE8504126A patent/SE8504126L/ not_active Application Discontinuation
• 1986
  • 1986-09-04 WO PCT/SE1986/000393 patent/WO1987001324A1/en not_active Application Discontinuation
  • 1986-09-04 EP EP19860905478 patent/EP0233931A1/de not_active Withdrawn
• 1987
  • 1987-04-29 FI FI871887A patent/FI871887A/fi not_active IP Right Cessation
  • 1987-05-01 DK DK224787A patent/DK224787A/da not_active Application Discontinuation

Non-Patent Citations (1)

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