FR2608088A1 - Method for assembling joinery components with interposition of a weather strip and device for implementing it - Google Patents

Abstract

Method for assembling two joinery elements 1, 2 having, at their junction, surfaces of complementary outlines staged into steps 3, 5, 7 and 4, 6, 8, these components being separated by a weather strip 9, especially an adhesive and compressible seal. The components are placed together along an oblique directional component T with respect to the surfaces 3, 5, 7 of the staged junction outlines carrying the weather strip 9. Application to assembling frames for openings such as door or window openings.

Description

 The present invention relates to #n process for mechanically assembling at least two pieces of carpentry having stepped faces intended to fit together with the interposition of a seal serving as caulking. This invention is particularly applicable to the assembly of parts used to constitute a door frame or between.

 The present invention also relates to the devices for implementing the method and to the products (assembled joinery parts> thus obtained.

In the frames of openings such as door or window openings, the lower horizontal support piece has, on the side of the opening, a stepped profile necessary to receive the opening elements. This profile generally has a succession of protruding and recessed dihedrons. The vertical or standing uprights which come to be fixed on this support piece also have a stepped connecting surface of profile complementary to that of the support piece, with dewlap to allow the embolism of these two pieces. We know how to use studs to ensure correct positioning of the frames on the support piece as well as to pocket any relative rotation of the pieces. These studs are mounted projecting from the frames substantially in the axial direction of the latter.
In the case of mechanical assemblies, it is generally desirable to place between the parts to be assembled a caulk of impregnated foam to ensure good sealing of the frame. This caulking is preferably bonded to the connecting surface of the support piece.

 The complementary connecting surfaces of the support piece and the frames generally have a number of elementary stepped surfaces orthogonal to one another, thus forming consecutively protruding and recessed dihedrons, in the manner of stair treads.

 The present invention is based on the observation that with such an arrangement, when parts come together for assembly, one part being fixed and the other being mobile, the protruding nitrogen from the stepped surfaces of the moving part tear , detach or damage the seals covering the stepped connecting surfaces of the other part.

 The present invention aims to remedy these drawbacks by simple and effective means, not modifying the usual appearance of the parts once assembled.

 According to the invention, the method of assembling two pieces of carpentry, in particular a support piece and a window frame of a window door, having at their junction surfaces of complementary profiles stepped, these pieces being separated by a caulking, in particular an adhesive and compressible seal, is characterized in that the docking of said parts is operated according to a directional component oblique to the surfaces of the stepped junction profiles carrying the caulking.

 thus, the projecting corners of the stepped surfaces of the moving part no longer come to slip on the caulking covering the junction surface of the fixed part. This biased approach to the protruding corners virtually eliminates any risk of deterioration of the caulk, by tearing or tearing.

 According to an advantageous embodiment of the invention, the joinery parts have guide surfaces respectively projecting and recessed relative to the surfaces of the stepped junction profiles of said parts, these guide surfaces being intended to come into mutual contact with the during docking, the orientations of said guide surfaces being such that they give the moving part the desired oblique directional component.

 By their mutual contact, before the joinery pieces have received their final position, the guide surfaces allow an oblique approach of the two pieces, so as to preserve the caulking.

 According to an advantageous embodiment, the projecting guide surfaces consist of substantially conical studs carried by at least one of the parts, the other part having blind holes, the caulking also having perforations facing said blind holes.

 This conformation of the guide surfaces, the free end of which forms a conical stud, allows them to provide a particularly simple triple function: positioning and anti-torsion action as with conventional studs, but also oblique docking of the parts to be assembled in a manner which preserves the caulking.

 n as a means for implementing the aforementioned method, the invention also relates to a pin characterized in that it comprises a rod extended by an enlarged stud, substantially conical, this pin being in particular made of a material with a low coefficient of friction.

This pin is preferably mounted on the moving part and the conical studs ensure the transverse offset of this part during docking.

 The subject of the invention is also, as a means for carrying out the method, a press and in particular a framing machine, characterized in that it comprises means for holding the movable joinery piece parallel to the direction of approach of the piece fixed and other means for authorizing a movement of this part orthogonally to the aforementioned direction, so as to allow the shifting of said part during the docking phase.

 Finally, the invention relates to assembled joinery parts obtained by carrying out a process as defined above, or by using a press of the type indicated, the assembly comprising connecting members embedded in two consecutive parts of the assembly. and arranged parallel to the plane thereof.

 Other features and advantages of the invention will also emerge from the description which follows.

#ux appended drawings, given by way of nonlimiting examples, the process according to the invention has been illustrated and shown devices allowing its implementation. More precisely
FIG. 1 is an explanatory diagram in cross section of the process according to the invention,
FIG. 2 is a perspective view with cross section of the joinery pieces intended for between assemblies, before the docking phase,
FIG. 3 is a view similar to FIG. 2 of the joinery parts during docking,
FIG. 4 is a cross-sectional view of the joinery parts once assembled,
FIG. 5 is a plan view on a small scale of a press for assembling a complete door or window frame,
- Figure 6 is a partial sectional view on a large scale of a portion of Figure 5 for the implementation of the method according to the invention.

Referring to the explanatory diagram of FIG. 1, we see at t and 2 the joinery pieces to be assembled, such as a support piece t and an upright 2 of a door or window frame. Parts 1 and 2 have at their junction complementary stepped profiles, for example in
Z, having a succession of elementary plane surfaces 3, 5, 7 and 4, 6, 8 respectively. The surfaces 3 and 5 form a hollow dihedral of edge R and the surfaces 4 and 6 a corner of the edge B. The angles at the top in Çt and B are in the example considered, close to 900.

 The part 1 is assumed to be fixed and its junction profile is covered with a caulking formed by an adhesive and compressible seal 9, in itself known, such as a plastic foam impregnated with a tar product intended to be strongly compressed at the junction of parts 1 and 2, the stepped profiles coming to fit one into the other.

The Applicant has made the following observation when the parts 1 and 2 are brought together with the press to be definitively subject to each other, if the part 2 is such that the edge B is perpendicular to the 'ar8te
A, the edges A and B being situated in the plane ZZ perpendicular to the surfaces 3 or 7, and if the surfaces 3, 5, 7 and 4, 6, 8 being respectively mutually parallel, the approaching of the part l by the piece 2 takes place in the direction N parallel to the plane ZZ, under these conditions, the ar # te B of the corner 4, 6 meets the first in
C the surface of the joint 9. The approximation continuing, this edge B will tend to entrain all the material of the joint 9 located to the right of this line ZZ in the figure, which can cause it to come off along the faces 5 and 7, or even its shearing and result in a jam at the level of arSte B, detrimental to good final squaring of parts t and 2 and to the tightness of the assembly.

 To avoid this drawback, the invention provides for docking of the clamp i by the part 2, starting from a position in which the stepped profiles of the two parts are offset laterally with respect to each other .

 The part 2 being for example in position 2A of FIG. I, the part 2 is then moved towards the part 1 for example according to a translational movement T directed obliquely relative to the surfaces 3 and 7 of the stepped profiles.

 We understand that under these conditions, we can ensure that the edge B approaches the caulk 9 in the vicinity of the edge D of the # dihedral hollow formed by it opposite the edge A. Under these conditions , all risks of tearing and tearing of the caulking can be avoided.

 Preferably, the direction of approach T of the part 2 against the part 1 is close to the bisector U of the angle of the faces 3 and 5. In this way, the caulking 9 is subjected to no friction but only to substantially uniform compression.

 The bringing together of the parts 1 and 2 along an oblique directional component T can be ensured by strict guiding of the part 2 by means of the movable head of the press serving to apply these two parts against each other.

 But preferably, it is provided according to the invention to give the piece 2 a certain degree of freedom relative to the head of the press, which moves in the direction N. The transverse movement of the piece 2 during the docking of the part 1 is ensured by means of profiled guide members, respectively male and female, which come into contact and cooperate when the parts 1 and 2 are brought together to give a transverse reaction to the moving part. Such an embodiment is shown in Figures 2 to 4.

 As can be seen in FIG. 2, the guide surfaces 10 and 11 are respectively projecting il and recessed 10 relative to the stepped profiles of said parts 1, 2. The projecting guide surfaces consist of substantially conical pins 11 carried by the part 2 directed substantially in the axis of the latter, so that the axes VV of the canes are parallel to the direction N of translation of the movable plate of the press (not shown.

 The nipples 11 constitute the pointed and widened protruding ends of pins 12 whose rods 12a substantially cylindrical and forming tenons are detachably plugged into housings 13 which are adjusted thereto, drilled in the elementary surfaces 4, B of the stepped profile of the part 2. The pins ^ 12 are advantageously made of a material with a low coefficient of friction such as a polyamide #. The recessed guide surfaces 10 are constituted by blind flared holes of conical profile complementary to that of the studs 11. The blind holes 10 are formed on the elementary surfaces 3 and 7 of the part 1. The caulking 9 has perforations 14 in blind hole look 10.

 The half-angle at the top b of the studs 11 is chosen from a range of a few degrees, for example 45, this choice being a function, inter alia, of the stepped junction profile of the parts 1 and 2. In the case of a profile having a succession of substantially straight angles, the angle a of the face 5 of the stepped profile with the direction of the frame 2 being only about 59.

experience has shown that the half-angle at the top of the conical surfaces 10 and 11 is advantageously chosen around 150.

 According to a variant not shown of the invention, the half-angle at the top b of the pins 11 corresponds to the half-angle at the top of the hollow dihedral in one of the faces of which the blind holes 10 are made.

This angle b is shown in FIG. 1. Under these conditions, the slope of the conical surfaces 10 and 11 which come into contact during docking is equal to that of the bisector U.

 However, if we choose an angle that is too open, we limit the height of the nipples 11 and of the holes 10 because their diameter must not be excessive, so that large angles are reserved in the case where the caulking 9 is thin.

FIG. 3 illustrates an essential step in the assembly process according to the invention. In view of the docking of two pieces of joinery 1, 2 as previously detailed with reference to FIG. 2, the piece 2, previously furnished with pins 12 whose rods 12a are put in place in the housings 13 is initially positioned by relative to the part 1, so that the faces of these parts intended to be aligned after the junction have a lateral offset d. The offset d is close to but does not exceed the radius r of the orifice of the blind holes 10 constituting the recessed guide surfaces. The part 2 is approached to the support part 1 in the direction N, so that the points nipples 11 have passed through the holes 14 of the caulking 9 and are practically in contact with the edges of the blind holes 10, the axes of the rods 12 being directed parallel to the axes of the holes 10 (position in FIG. 3). The docking is then carried out by pressing the part 2 against the part 1, in the direction N but by means of a device not shown allowing a transverse shifting
R of the part 2, orthogonally to N. The adjustment is such that when the points of the studs 11 penetrate into the holes 10, the offset of the axes of the pins 12 relative to the axes of these holes is substantially equal to d or to r.

The walls of the nipples 11 then take a sliding contact against those of the holes # 0 and then act like a cam. Pressing the part 2 against the part t forces the pins 11 to slide along the surfaces of the blind holes whose slope corresponds to the inclination of the pins. Therefore, the connecting end of the part moves during pressing in an oblique direction
T which corresponds to the inclination of the conical pins 11 or to that of the blind holes 10, direction making an angle b with the normal N.

Under these conditions, when the edge of the protruding dihedral B of the part 2 comes into contact with the caulking 9 at C ′ in the oblique direction T relative to the surfaces of the stepped profiles, any risk of degradation of the caulking 9 is eliminated. If in addition the surface 5 carrying the caulk is inclined at an angle a with the direction of the part 2, angle of the direction
T relative to face 5 has the value (a + b>. This angle being greater than b, said B has less risk of entraining or tearing the caulking 9 along face 5.

 Figure 4 shows the two pieces 1, 2 of carpentry after the assembly has been operated and completed with a screw 50. The two pieces 1, 2 are perfectly positioned. The pins 11 are completely engaged in the blind holes 10, the pins 12 then constituting dowels. The caulk 9 is uniformly flattened without being damaged by the edge of the protruding dihedron B.

 FIG. 5 shows an overall view of a framer implementing the method according to the invention. This framer is intended to carry out the assembly of a complete door or window frame comprising a support piece 1a, a sleeper crossbeam 1b and two frames 2a, 2b. It is designed to allow adaptation according to the two dimensions to the size of the assembly to be produced.

 This framing machine has a rectangular, horizontal and fixed frame 32, in which can move in translation along N - N ', a mobile arm 31 which slides on the frame 32 thanks to guide members 41.

 The various pieces of the frame 1a, 1b and 1a, 2b are placed horizontally on the frame maker and prepositioned with respect to each other by adjustable stops 33. The support piece 1a is placed on the fixed frame 32. The cross-member lb on the movable arm 31 and the frames 2a, b, straddling the fixed frame 32 and the movable arm 31. The stepped functional profiles at the ends of the frames 2a, 2b are provided with pins 12 according to the invention. The various connecting surfaces facing the support piece 1a and the crosspiece 1b have blind holes adapted to receive the pins 11 of the pins 12.

According to a feature of the invention, the ends of the frames 2a, 2b are mounted on support flanges 20 (Figure 6) capable of displacement R orthogonal to N, that is to say allowing said ends a certain vertical displacement. fi for this purpose, the plates 20 are carried by springs 22 formed in housings 21a of bases 21 which on one side form a body with the frame 32 of the framing machine and on the other are carried by the movable arm 31. The frames 2a, 25 are thus resiliently mounted in the vertical direction
The framing machine further comprises jacks 23 mounted on the arm 31 which is locked in position after adjustment as a function of the frame size, the jacks 23 acting on the crossbeam lb in the N direction.

 Initially, the frames 2a, 2b are shifted upwards by a distance d with respect to the crosspieces la, lb.

 The actuation of the cylinders 2s according to N causes the pressing of the dormant crosspiece lb against the frames 2a, 2b which are pressed in turn against the support piece 1 and the docking of the various connecting surfaces is carried out as previously described with regard to FIGS. 2 to 4. The frames 2a 2b are pulled down during docking by reaction of the blind holes 10 on the studs 11. After fitting the connecting screws 50, the assembly is thus carried out by simple and fast way with preservation of caulking.

 It will be noted that in all the assembly cases produced, the planned guide surfaces (pins and blind holes) once put in place, continue to play a useful roll while ensuring the resistance of the assembly to torsional forces.

 It is obvious that the invention is not limited to the embodiments described and that variants can be made to it. thus, the pins of the centering pins are not necessarily of revolution but could be between prismatic as well as the rods 12, the # holes 10 being also prismatic. The landing of parts 1 and 2 could also knock such that the direction N is vertical.

 It goes without saying on the other hand that the invention is applicable to the mechanical assembly of carpentry parts of the kind considered whatever the destination of these parts, and in particular for producing not only window frames, but also openings.

 Experience has moreover shown that instead of making conical blind holes 10, it was also possible to obtain satisfactory accosting of the parts with cylindrical blind holes of diameter very slightly greater than the largest diameter of the studs 11.

Claims (13)

 1. Method for assembling two pieces of joinery (1, 2) having at their junction surfaces of complementary profiles stepped in steps (3, 5! 7 and 4, 6, 8), these pieces being separated by a caulking ( 9), in particular an adhesive and compressible seal, characterized. in that the parts are brought together in an oblique directional component (T> with respect to the surfaces (3, 5! 7) of the stepped junction profiles carrying the caulking (9).  2. Method according to claim 1, characterized in that the oblique direction of docking (T) makes an angle of about 150 with the normal (ZZ) at one of the bearing surfaces (3, 7) of the stepped junction profiles this normal (ZZ) corresponding to the direction (N) of approach of the moving part (2) towards the fixed part (1).  Assembly method according to claim 1, characterized in that the oblique directional component  (T) of the docking movement is substantially oriented along the bisector (U) of a hollow dihedral (3-5) of the buttressed profile of the fixed part (i).  4. An assembly method according to claim 1 or 2, characterized in that the joinery parts tl, 2) have guide surfaces respectively projecting (11) and recessed (10) relative to the stepped profiles (4, 8 and 3, 7) of said parts, these guide surfaces (10, 11) being intended to come into mutual contact during docking, before one of the stepped junction profiles and the caulking (9) come into contact themselves, the orientations of said guide surfaces (10, 11) being such that they give the moving part t2) the oblique directional component (T) desired relative to the normal approach direction (N) .  Assembly method according to claim 31 characterized in that the projecting guide surfaces consist of substantially conical pins (il) carried by at least one of the parts (2), the other part (1) having blind holes (10), the caulking (q) having perforations (14) facing said blind holes (10).  6. Method according to claim 5, characterized in that the lateral offset (d) of the movable part (2) relative to the fixed part (1) affecting the faces of these parts intended to come into alignment in the final position d 'assembly, is substantially equal to the opening radius of the blind holes (10) when the tips of the pins (11) come into contact with the edges of these holes (10).  7. Method according to one of claims 4 to 6, characterized in that the projecting guide surfaces (il) are removably mounted on at least one of the parts (2) to be assembled.  8. Method according to claim 7, characterized in that the removable guide surfaces (11) are carried by rods (12a) intended to be pressed into recesses (13) of the part which carries them to ensure their maintenance.  9. Method according to one of claims 1 to 8 characterized in that one of the parts to be assembled (2) is provided at the stepped junction surface (4! 8) with removable pins (12) comprising a rod (12a) embedded in a recess (13) of said part, this rod being extended by a stud (11) widened and pointed, projecting relative to the stepped surface (4, 8) of the part (2).  10. Method according to one of claims 4 to 9, characterized in that the projecting guide surfaces (11) are mounted on the movable carpentry piece (2).  11. Method according to one of claims 1 to 10, characterized in that the movable carpentry piece (2) is moved horizontally during the approach to the fixed piece (1) and made capable of substantially vertical transverse movement when docking with the fixed part (1).  12. Press for implementing a method according to one of claims 1 to 11 and in particular framing, characterized in that it comprises means (Z3) for holding the movable carpentry piece (2) parallel to the approach direction N and other means (20, 21, 22) to allow the movement of this part orthogonally to the aforementioned direction, so as to allow the shifting of said part (2) during the docking phase.  13. Press according to claim 12. characterized in that the means permitting the shifting of the movable part (2) comprise support flanges (20) for the latter mounted elastically on springs (22) allowing this part to be displaced in an orthogonal direction (R) to the approach direction (N).  14. Pawn for the implementation of a method according to one of claims 1 to 11, characterized in that it comprises a rod (12a) extended by an enlarged stud (11), substantially conical, this pawn being especially made of a material with a low coefficient of friction.  15. assembly of carpentry parts such as door or window frames with the interposition of compressed caulking, obtained by implementing a method according to one of claims 1 to it, characterized in that it comprises connecting members embedded in two consecutive parts of the assembly and arranged parallel to the plane thereof