MXPA97002798A

MXPA97002798A - Reinforcement for metal bands or moldings for sealing, guiding and challenge

Info

Publication number: MXPA97002798A
Application number: MXPA/A/1997/002798A
Authority: MX
Inventors: Granville Bright Robert; Heller Norbert
Original assignee: Draftex Industries Limited
Priority date: 1994-10-20
Filing date: 1997-04-17
Publication date: 1998-02-01

Abstract

The present invention relates to a reinforcing carrier that extends longitudinally by a fastening, sealing or cutting band in the form of a channel, characterized in that it comprises: an elastic material formed inside a channel having a base that is integral with two walls Laterals ending in longitudinal edges defining a channel mouth, the side walls being substantially parallel, the material is formed with a plurality of regularly arranged through grooves, accommodated side by side along their length, the grooves extend substantially perpendicular to the longitudinal extension of the carrier and comprise slots of a first type and slots of a second type, the slots of the second type comprise slots of a first shape and slots of a second shape, each slot of the first type extends continuously through the base and by a significant distance within each sidewall but for less than Halfway down the depth of each side wall from the base of the channel to the longitudinal edge of that side wall, the slots of the first type provide flexibility for the wearer when they are curved about an axis parallel to the plane of the base and perpendicular to the plane. length of the band, and slots of the second type are formed in each side wall and extending from a point inward of the respective edge thereof, towards the base, to provide flexibility for the wearer when curving about an axis perpendicular to the plane of the base, the grooves of the first and second forms of the second type alternate with each other along each side wall, the grooves of the first form of the second type end at a short distance from the base and the grooves of the second form of the second type extends in and partially through the base, the slots of the second type are accommodated in pairs of the opposite slots, each pair consisting of of a groove of the second type in a side wall in alignment through the channel with another groove of the second type in the opposite side wall, each groove of the first type is positioned between two successive grooves of the second type along the length of the carrier, the two successive slots are respectively a slot of the first form of the second type, and a slot of the second form of the second type.

Description

REINFORCEMENT FOR METAL BANDS OR RARE 3LDURS. SEAL, GUIDE AND RETURN The invention relates to a reinforcing carrier for a metal band or fastening molding, for sealing or retouching in the form of "canax" comprising elastic material formed in a channel "having a base which is integrated to two side walls. terminating at the longitudinal edges defining the mouth of the channel, the material is formed with a plurality of through grooves arranged side by side along their length, the grooves comprise grooves of a first type and grooves of a second type, each slot of the first type extends through the base and each slot of the second type is formed in a side wall. Such a carrier is known for example from GB-A-2 247 487. In this carrier, the first slots are arranged in an alternately different way along the length of the carrier. In addition, the second slots are open towards the distal edge of the respective side walls. In certain circumstances, such a carrier can not be bent in a completely symmetrical or uniform manner and may also not have sufficient stiffness when bent in certain directions. According to the invention, therefore the known carrier is characterized in that each of the slots of the first type extends continuously through the base and slightly towards each of the side walls for REF: 24503 to provide flexibility to the carrier when curve "" "about an axis parallel to the plane of the base and perpendicular to the length of the metal band, the grooves of the second type are formed in the side walls and each extend from a point above the distal edge respective bands of the same towards the base to provide flexibility to the carrier when it is curved about an axis perpendicular to the plane of the base The bands of sealing, guiding and adjusting of the embodiment of the invention, and the mounting carriers incorporate such bands of metal in the embodiment of the invention, will now be described, by way of example only with reference to the accompanying schematic drawings in which: 15 The F Figure 1 is a side view of a car body in which the metal bands can be used; Figure 2 is a cross-sectional view through one of the sealing and adjusting metal bands, taken on line II-II of Figure 5; Figure 3 is a perspective view of one of the metal carriers incorporated in the metal band of Figure 2; Figure 4 is a plan view of the metal carrier of Figure 3 in one stage during its manufacture; Figure 5 is a perspective view of a modified form of the carrier shown in Figure 3; Figure 6 is a view of the sealing metal band of Figure 2 in the form of a closed cycle; Figure 7 is a side cutaway view of part of the carrier of Figure 3 showing its appearance when following a first type of fold; Figure 8 is a cut-away side view of another part of the carrier of Figure 3, showing its appearance when a second type of folding follows; Figure 9 is a side view of a modified form of the carrier of Figure 3; Figure 10 is a side view of a further modified form of the carrier of Figure 3; and Figure 11 shows the carrier of Figure 10 folded to follow the first type of bending illustrated in Figure 7. As shown in Figure 1, a car body 5 has a doors 6, 8. To provide a watertight seal To the water around each door opening, the metal sealing band is mounted on a flange 10 (see Figures 2 and 5) that run around each door opening. The rim 10 is formed where the panels of the internal and external body meet at the edge of the door opening and are welded together to form a rim which is in the plane of the opening of the door. . Instead, or in addition, it can be mounted on the metal band to seal around the door itself. Figure 2 shows one of the sealing metal bands 12. This comprises a channel-shaped holding portion 14 and a soft tubular sealing portion 16. In use, the metal sealing band 12 is mounted so that the fastening portion 14 holds the flange 10 by embracing it. The metal band for sealing 12 thus supports the portion 0 for sealing 16 so that it runs around the curvature of the door on the outer side of the latter. The closing door is closed on the sealing portion 16, partially compressing it and providing a watertight seal. The metal sealing band 12 is preferably made of extruded plastics of rubber material 20. The sealing portion 16 is preferably made of extruded rubber and softer or softer than the material 20 of the fastening portion 14. advantageously, the rubber of the sealing portion 16 is foamed or the like. The material 20 of the fastening portion 14 and the material of the sealing portion 16 can be coextruded. Instead, however, the fastening portion can be produced separately and the sealing portion 16 then secured in position by means of an adhesive.

An important feature of the metal band The seal 12 is the reinforcement in the form of a metal core or carrier in the form of channel 22, which will be described in greater detail below. elastic metal and help ensure that the holding portion 14 holds the flange 10 securely. In addition, the extruded material 20 forms the integral clamping lips 24 which contact the opposite faces of the flange 10 and help to resist the removal 10 of the flange band of the flange. Advantageously, the material of the lips, although coextruded with the material in the form of a channel, is of a softer consistency than the material 20, its smoothness increases with frictional contact with the flange. The metal carrier 22 is advantageously incorporated into the extruded material by means of an extrusion process with a known head. The arrangement of the lips 24 shown in Figure 1 is simply by way of example; There may be about 20 lips on each side of the channel and they may be of different sizes. The metal carrier 22 is illustrated in Figure 3. The carrier 22 comprises a metal channel having an inverted base 25 and sides 26 and 28, and formed with 25 regularly arranged slots.

First, there are slots 30. Each slot 30 is < "** - extends completely through the base 24 and then through less than half the downward travel of each side 26, 28 (extending an equal distance towards below each side). The second slots 32 are arranged on each of the sides 26, 28. The length of each slot 32 is slightly less than the depth of each side 26, 28. The slots 34 are again arranged on each side 26, 28. slots 34 alternate with slots 32. Each slot 34 is longer than the slots 32 and extends partly through the base 24. Each slot 32 in one of the two side walls 26, 28 is aligned through a channel with a slot 34 15 in the opposite side wall. Finally slots 36 are provided in the side walls 26, 28. Each slot 36 is positioned between a slot 32 and a slot 34. Each slot 36 extends from the distal edge of the respective side wall 26, 28 and for a short distance upwards from each side wall. The metal carrier can be produced in any convenient way. Advantageously, however, this is produced by grooving and then stretching an unfinished part. of flat metal and then folding the unfinished piece into a channel. This process is illustrated with, "" "reference to Figure 4 which shows an unfinished piece of metal, flat 40 of indefinite length which is fed through an arrangement to be cut (for example, a pair of blades). revolving), which cuts the slits through it and in predetermined positions.These slits do not become the slots 30, 32, 34 and 36 of Figure 3. The slits of Figure 4 are thus referred to in FIG. corresponding way but with the addition of the suffix "A". The slots 30A, 32A, 34A and 36A are respectively converted into slots 32, 34, 36 and 38 by means of a stretching operation. This is carried out by passing the unfinished piece 40 split between a pair of interengaged compression rollers which apply compression to the unfinished part along two "stretching trajectories" 42, 44. The material of the unfinished part 40 is thinned, along these stretching paths 42, 44 This thinning of the The material causes it to expand longitudinally, or to lengthen, so that the slits 30A, 32A, 34A and 36A expand and respectively form the slots 30, 32, 34 and 36. The unfinished piece is subsequently folded into a channel shape. . Instead, however, the carrier can be made directly cutting the grooves in an unfinished part, using a suitable embossing machine for example; in other words, a stretching operation is not carried out. Figure 5 shows a modified form of the carrier 22 of Figure 3. In the carrier of Figure 5, each slot 32 in one of the side walls 26, 28 is aligned through the channel with one of the slots 32 in the wall opposite side. The carrier of Figure 5 can be made in the same manner as shown in Figure 4 except that the slits 32A could be aligned with each other across the width of the unfinished part 40. Advantageously, the full sealing metal band 12 may be placed in a particular door opening 6 which is preformed in a closed cycle as shown in 46 in Figure 6. This is distributed to the automobile manufacturer in this manner. This form is advantageous because the placement or adjustment process is simplified. The setter simply has to offer the frame in the form of a closed cycle to the opening of the door, bending it inward as needed to adjust it or place it on the rim, completing the process by pressing the clamping portion in the form of channel 14 on the rim around the periphery of the door opening. Alternatively, this process can be carried out using a suitable manual setting or positioning tool or by means of a robot. The process is much simplified compared to the setting adjustment of a metal band to seal of indeterminate length on the flange around the door opening. This process requires the handling of an indeterminate length of metal strip, pressing this on the flange, and then cutting and securing the two ends together in some suitable way, and this is time consuming and unsatisfactory in certain aspects. The shape of the carrier 22 shown in Figure 3 or 5 is particularly advantageous for use in a sealing metal band to be provided in a closed cycle, as shown in Figure 6. This is due to the arrangement of the slots 30, 32, 34 and 36, although it allows the necessary bend (as will be explained in more detail below with reference to Figures 7 and 8), however it ensures that the carrier remains relatively rigid. In particular, the carrier is relatively rigid as compared to the previous forms of carrier in which the slots are more extensive so that the carrier effectively comprises a series of inverted U-shaped elements arranged side by side to define the channel and with their lengths connected by means of short connecting links. Such a carrier, although satisfactory for some applications, is very flexible. The closed cycle metal band forms formed with such prior carrier types are thus very flexible and very difficult to handle to fit or position. In contrast, it has been found that the use of slots 32 and 34 of different lengths is, in the carrier of Figure 3 or Figure 5, advantageous for increasing the stiffness of the closed cycle. It was found that if these grooves have the same length, the closed cycle 46 (Figure 6) is less able to retain its shape during assembly by the setter on the flange 10, making this assembly process much more difficult. Although the metal band has been illustrated in the form of a door seal, it could also be incorporated as a seal for a vehicle luggage compartment. In this case, the sealing portion 16 could be mounted to run along the outer side of the base of the holding portion 14 instead of along one of its sides. Instead, the metal band may be in a channel for purposes of guiding and sealing a window. The advantages arising from the arrangement of the slots in the carrier 22 are illustrated in greater detail in Figures 7 and 8. Figures 7 and 8 illustrate different forms of folding which the metal band 12, and thus the carrier 22 , they have to experiment in use. Figure 7 is an enlarged view of the corner 48 (see Figure 6) in the opening of the door 6. As this can be the same for the other corners in the door opening "r". The metal band for sealing 12 therefore has to be bent accordingly, the metal carrier 22 also of course bends. Figure 5 7 illustrates the folded carrier 22, the rest of the metal band for sealing was omitted for clarity. Figure 8 is a view taken in the direction of arrow VIII of Figure 5. As shown, the rim 10 is curved with respect to the vertical plane, and this Figure again illustrates the metal carrier 22 with the rest of the metal band for sealing being omitted for clarity. These two different types of flexural bending (Figures 7 and 8) are accommodated by the arrangement of the slots in the metal carrier 22. Thus, the shape of the bend shown in Figure 7 is accommodated mainly by the slots 30 in the base 24 of the carrier (see Figure 3 or 5). The shape of the fold shown in Figure 8, on the other hand, is accommodated mainly by slots 32 and 34 (Figure 3 or 5). If desired, the metal band (and thus the carrier as well) can be produced with the side walls of the channel of the fastening portion 14 slightly exposed apart. This facilitates mounting on the flange 10. Subsequently, the side walls can be pressed strongly into contact with the flange using a suitable tool. Figure 9 shows how, along part of this length only, the height of each of the side walls 26, 28 can be reduced by cutting it along or near the stretching path 42, 44. This helps to increase the carrier flexibility that can be carried out on those regions of the carrier where the metal band is to be folded to follow the folds of the shape shown in Figure 7. Only one of the side walls 26, 28 needs to be modified from this way if desired. Figure 10 shows a modification in which the carrier is formed with additional saw cuts 50 along a region 52 where the carrier bends to follow a curve of the type shown in Figure 7. Each cut 50 is aligned with a slot 32 or 34 (see Figure 4 6 5) and joins that slot to the free edge of the respective side wall 26, 28. Figure 11 shows how those saw cuts help the bearer to bend when following a curve.

It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects to which it relates.

Having described the invention as above, it is property that is contained in the following:

Claims

RE IVIND I CAC I ONE S * y 1. A reinforcing carrier for a metal strip or fastening molding, for retouching or retouching in the form of a channel, comprising elastic material formed in a channel having a base, which it is integrated to two side walls that end in longitudinal edges that define the mouth of the channel, the material is formed with a plura of through grooves arranged side by side along its length,

The grooves comprise grooves of a first type and grooves of a second type, each groove of the first type extends through the base and each groove of the second type is formed in a side wall, characterized in that each groove of the first type is continuously extends through the base and 15 slightly towards each side wall to provide flexibi to the wearer when curving about an axis parallel to the plane of the base and perpendicular to the length of the metal strip, the slots of the second type are formed in the side walls and each is extends from a point 20 above the respective distal edge thereof to the base to provide flexibi to the wearer when curving about an axis perpendicular to the plane of the base.
2. The carrier according to "" "- claim 1, characterized in that the grooves of the second type are of two different shapes, which alternate with each other along each side wall, the grooves of one of these forms end up close to each other. the base and the grooves of the other form extend towards and partially through the base.
3. The carrier according to claim 2, characterized in that each groove of one shape in a side wall is aligned with a respective groove of the other shape in the opposite side wall.
4. The carrier according to claim 2, characterized in that each groove of one shape in a side wall is aligned with a respective groove of one shape in the opposite side wall and each groove of the other shape in a side wall is aligned with a groove. respective slot of the other form in the opposite side wall 20.
5. The carrier according to any of the preceding claims, characterized by slots of a third type in both side walls, each slot of the 25 third type extends from the edge of the respective side wall towards the base but on less than half of the , "*" -. extension of the side wall in that direction.
6. The carrier according to claim 5, characterized in that each slot of the first type is aligned with two slots of the third type.
7. The carrier according to any of the preceding claims, characterized in that the 10 slots of the first and second type alternate with each other along the length of the carrier.
8. The carrier according to any of the preceding claims, characterized in that the 15 elastic material is metal.
9. The carrier according to claim 8, characterized by two trajectories running respectively along its two walls On the side, the material of the carrier has been subjected to thinning along these two parts to expand the widths of the slots.
10. The carrier according to any of the preceding claims, characterized in that along part of its length only, the height of at least one of the side walls is reduced.
11. The carrier according to claim 5 or 6, characterized in that along part of its length only, the height of at least one of the side walls is reduced, the reduction in height removes the grooves of the third type but does not affect to the grooves of the first and second type.
12. The carrier according to any of claims 1 or 4, characterized in that along part of its length only, one or more s are cut in at least one of its side walls, the s are parallel to the slots of the second type and extend from the free end of that side wall to terminate at or adjacent to the base.
13. The carrier according to any of claims 5 or 6, characterized in that, along part of its length only, one or more slits are cut in at least one of its side walls, the slits being parallel to the slots of the second. type and extend from the free end of that side wall to terminate at or adjacent to the base, the slits being additional to the slots of the third type.
14. The carrier according to claim 12 or 13, characterized in that each slit is aligned and communicates with a respective slot of the second type.