JPS5920494B2 - Channel strips for guiding, sealing or finishing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a resilient channel-like guide for use in draft seals, beading or window channels, flange finishes (e.g. for covering welded flanges), etc. , relating to seals and finishing strips.

Such a band-like body is hereinafter referred to as a "channel-like band-like body", and this channel-like band-like body is particularly used, but not exclusively, in automobile bodies.

It is known to produce such channel-like strips by covering a metallic "support" with an elastic material, such as glass or rubber, using extrusion techniques.

The metal support preferably consists of a row of approximately U-shaped elements arranged side by side to one another.

It is known to connect supporting elements to each other by relatively short connecting links.

Such connecting links are of course held together with the support element when covered with an elastic covering material, but in the final sealing strip these connecting links are limited in their elasticity to a certain range. .

Another disadvantage of the connecting link is that it almost completely eliminates the possibility of longitudinal stretching or compression of the channel-shaped strip during use in order to compensate for errors in the vehicle body to which it is attached.

For this reason, it is known to arrange the connecting links in such a way that they can be broken or removed after the process of coating the support element with an elastic coating material.

If there is no binding link effect in the final product,
Elasticity is significantly increased.

However, the disadvantage in this case is that the support elements can no longer be positively positioned relative to each other.

If the channel-shaped strip is bent, for example along a curve, this disadvantage means that a positive position for the neutral bending axis is no longer obtainable and only an insufficient bending is obtained.

It is therefore an object of the present invention to provide an improved channel strip and an improved method of manufacturing such a channel strip.

A special object of the invention is that the elements of the support are connected to each other and are thereby positively positioned relative to each other, but without impairing the elasticity, compressibility and extensibility of the channel strip. It's about offering your body.

Embodiments of the invention will now be described in detail with reference to the drawings: FIG. 5 shows a completed channel strip;
The channel-like strip has a gripping section 5 and, if necessary, a sealing section 6.

The gripping section 5 has a substantially channel-shaped plastic or rubber material 8 and a channel-shaped core or support 10, preferably made of metal, embedded in the material.

The sealing section 16 is preferably made of a softer material than the plastic or rubber material 8, for example foam rubber;
It is glued to the outside of one wall of the grip section 5.

If the material of the sealing section is compatible with material 8 or is the same material, the two can be extruded simultaneously.

The mutually opposite inner walls of the gripping section 50 channels advantageously have gripping lips 12.

In use, the gripping section 5 is arranged to grip a metal flange around a door or opening of a motor vehicle body, with the gripping rib 12 preventing it from falling off.

The gripping section 5 is mounted on the flange in such a way that the sealing section 6 is located on the outside of the flange, and when a door for opening and closing is placed on the sealing section 6, a draft and rain protection seal is formed. .

The support 10 is formed from a metal material 14 (see FIG. 1) with a rectangular cross section, 0.5 mm thick and 30 mm wide.

one central portion 16A and two edge portions 16B each
A plurality of relatively narrow slits 16 consisting of are first formed in the blank 14 at a small distance 16C from each other, in which case a section 1 without slits extending in the longitudinal direction of the blank is formed.
8.20 will remain.

The thickness of the material is then reduced from 5 mm to 0.3 mm to 0.2 mm along and only in the unslit section 18.20 of the slitted first material. Such rolling processing is performed.

As the result is shown in FIG. 2, the slit 16 is widened to a slot with a width of 2 mm to 3 mm.

In this way, a support element is formed having support elements 22 separated by relatively short connecting links 24, 26.

The support shown in FIG. 2 is then subjected to a forming step which transforms the support into the shape shown in FIGS. 3A and 3B, ie resulting in corrugations 28 in each coupling link 24, 26. .

This process reduces the gap between the support elements 22 to 2
It is reduced from millimeters to 3 millimeters to 1.5 millimeters.

The apex of each corrugation protrudes 1 millimeter from the material surface.

3A and 3 using a suitable extruder.
The support of Figure B is embedded in a plastic or rubber material 8 as shown in Figure 4, with the shape of the support remaining as shown in Figures 3A and 3B.

As can be seen, the material 8 covers the corrugations 28.

The strip of FIG. 4 is then bent into a channel to produce the shape shown in FIG. 5, after which the sealing section 6 is glued.

In use, the corrugated connecting links °24 t 26 of the support of the finished channel strip prevent excessive stretching of the channel strip, since these connecting links This is because it maintains the mutual connection between mutually adjacent support elements of the body.

However, the corrugations 28 allow for some compression and bending of the channel strip.

During the bending action, the connecting link holds the neutral bending axis of the channel-like strip in place (this does not occur if the connecting link breaks), and this makes it possible to obtain the desired shape of the curve. This is advantageous because it prevents the sealing section 6 from bending in an undesirable manner.

Obviously, the corrugations 28 can also be used with other shapes of supports.

For example, corrugations could be provided on a support of the type generally shown in FIG. 2, in which the slots and connecting links are formed by stamping rather than rolling.

Furthermore, the coupling links need not be arranged as shown in FIG.

For example, only one row of connecting links can be provided approximately in the center of the support along its entire length.

Conversely, you can, for example, add an additional row of join links to the
It can also be provided between the two rows of coupling links shown in the figure.

In either case, all the coupling links are bent into a corrugated form.

Similar extrusion techniques may be used to place the illustrated support in a channel (e.g., a glazing channel) configured to be placed in a groove as shown in FIG. 6, rather than attached to a flange. It is possible to have it built-in.

In yet another embodiment, the support is only partially covered by a plastic or rubber material, i.e. only on its outer surface, which surface will be the outer surface of the finished channel strip. It only extends inwardly a certain distance around the periphery of the support.

This reduces the amount of coating material used and thus costs.

The action of bending the coated support into a channel shape is achieved by material 8.
It causes stress.

If the channel-shaped strip is curved when it is attached to a flange of an automobile body, etc., the stress created will avoid kinking of the material inside the radius of curvature, and the stress will be at least Partially reduced.

1 and 8 show how the metal stock of FIG. 1 is prepared.

As shown in FIG. 7, which is a longitudinal cross-sectional view, the material is not flat, but has a stepped portion indicated by reference numerals 40 and 42.

This step-shaped material is pressed or rolled at the locations indicated by the two arrows A and B, and is deformed into the shape shown in FIG.

In this case, the material is substantially flat, but the portions corresponding to the stepped portions 40 and 42 are curved thick portions indicated by the same reference numerals.

Next, slits are formed in the material as shown in FIG.
Corresponds to 2.

When the rolling process described in connection with Fig. 2 is carried out,
The thickened portions 40.42 are thinned to approximately the same thickness as the rest of the material.

In this way, unnecessary weakening along the unslit section 18.degree. 20 is prevented.

As is obvious, a similar method can be used to make the metal material thicker where necessary.

In FIG. 9, a slit is first formed extending over more than half the lateral length of blank 46, leaving a section 48 without slits.

The section 48 without slits is then rolled as shown in FIGS. 10 and 11, and the slits 44 are expanded into slots 50.

The blank is then bent into channels as shown in FIG. 12 and then covered with a plastic or rubber material by extrusion to form a structure such as that shown in FIG. 5 (as opposed to It is also possible to cover the material in the flat state, but after forming the region 52 as a corrugation, and then bending it into a channel).

In both cases, the rolling process which transforms the slit into a slot clearly produces the desired strain hardening effect.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the material of a metal support according to an embodiment of the present invention shown at an early stage of production, Fig. 2 is a plan view of the support shown at an intermediate stage of production, and Fig. 3A is a further advanced stage of production. FIG. 3B is an end view taken in the direction of the arrow X in FIG. 3A; FIG. FIG. 5 is a cross-sectional view of a channel-like strip that has already been manufactured, FIG. 6 is a cross-sectional view of a channel-like strip of another embodiment, and FIGS.
9 is a plan view of another embodiment of the support material; FIG. 10 is a further advanced stage of manufacture; FIG. FIG. 11 is a sectional view taken along the line XI-XI in FIG. 10, and FIG. 12 is a perspective view showing the support made of the materials in FIGS. 9 and 10 in a completed state. . 5...Gripper section, 6...Seal section, 8...Plastic or rubber material, 10.
...Support body, 12...Gripping rib, 14
...Material, 16...Slit, 16A
...Central part, 16B, 16C...Image part, 18, 20...Section without slits,
22...Support element, 24, 26...
- Matching link, 28... Waveform part, 40, 42
...Stepped portion and thick wall portion, 44...Slit, 46...Material, 48...Section without slit, 50...・Slot, 52・
...Waveform part.

Claims (1)

[Scope of Claims] 1 Channel-like strips for guiding, sealing or finishing, made of a flat elastic metal material and arranged in parallel so as to touch each other laterally. a generally U-shaped element 22, and relatively short links 24, 26, made of a resilient metallic material and joining the elements together to define a channel.
52, the coupling range of adjacent elements 22 is located within a common plane, and the links 24, 26° 52
has a reduced thickness compared to the element 22, and a channel-like covering 8 of elastic material covers at least the outer surface of the element 22 and the links 24, 26.52. , each coupling link 24, 26, 52 being bent or corrugated so as to be bent out of said common plane and then bent back into said common plane. Channel-like strips for. 2. Claim 1 in which the connecting links 24, 26 extend in one or more rows in the longitudinal direction of the channel.
Channel-like strips as described in Section 1. Channel according to claim 2, characterized in that 32 rows of connecting links 24, 26 are provided near the ends of the legs of the substantially U-shaped support element 22 at a certain distance therefrom. zonular body. 4. The channel-shaped strip according to claim 2, in which only one row of connecting links is provided. Channel strip according to claim 4, characterized in that 51 rows of connecting links connect the supporting elements to each other at the bottom of the U-shaped element. 5. Channel strip according to claim 4, in which 61 rows of connecting links 52 connect one leg of each support element to the corresponding leg of the next support element. 7 Each coupling link 52 is connected to I- in the longitudinal direction of the channel.
7. A channel strip according to claim 6, having a height approximately equal to the length of each support element, measured in the direction perpendicular to the surface. 8. Channel strip according to claim 1, in which the covering material 8 completely covers the support element 22 and the connecting links 24, 26, 52.