CA1175085A - Channel-shaped sealing and guiding strips - Google Patents
Channel-shaped sealing and guiding stripsInfo
- Publication number
- CA1175085A CA1175085A CA000396377A CA396377A CA1175085A CA 1175085 A CA1175085 A CA 1175085A CA 000396377 A CA000396377 A CA 000396377A CA 396377 A CA396377 A CA 396377A CA 1175085 A CA1175085 A CA 1175085A
- Authority
- CA
- Canada
- Prior art keywords
- channel
- plastics
- assembly according
- lips
- side walls
- 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.)
- Expired
Links
Landscapes
- Seal Device For Vehicle (AREA)
Abstract
CHANNEL-SHAPED SEALING AND GUIDING STRIPS
ABSTRACT
A window sealing and guiding channel arrangement has a plastics, outer, channel 12 which is shaped to be located and held within a rigid metal support 10 in a vehicle body.
The plastics channel 12 incorporates metal reinforcement 26 which stiffens the plastics channel to help it to be held more securely within the support 10. The metal carrier 26 is preferably of a form which resists shrinkage and stretching of the arrangement. The plastics channel is provided with sealing and gripping lips 16, 18 and its side walls have bent-over portions to define slots 23, 24. Inside the plastics channel is adhesively or otherwise secured a rubber channel 14 in which the window glass is guided. To aid this process, the rubber channel 14 has flocked sealing lips 44 and 46.
ABSTRACT
A window sealing and guiding channel arrangement has a plastics, outer, channel 12 which is shaped to be located and held within a rigid metal support 10 in a vehicle body.
The plastics channel 12 incorporates metal reinforcement 26 which stiffens the plastics channel to help it to be held more securely within the support 10. The metal carrier 26 is preferably of a form which resists shrinkage and stretching of the arrangement. The plastics channel is provided with sealing and gripping lips 16, 18 and its side walls have bent-over portions to define slots 23, 24. Inside the plastics channel is adhesively or otherwise secured a rubber channel 14 in which the window glass is guided. To aid this process, the rubber channel 14 has flocked sealing lips 44 and 46.
Description
~7sa~s BACKGROUND OF THE INVENTION
The invention relates to channel-shaped sealing and guiding strips. For example, embodiments of the invention may be used as windo~ sealing and guiding channels in motor vehicle bodies.
According to the invention, there is provided an assembly of ~wo window sealing and guiding channel arrangemen~s which are connected together by a mitred joint, each channel arrangemen~ oomprising a first, outer, channel made of plastics material and a second, inner, channel fitted inside the first channel and made of rubber material, the plastics channels being mitre-cut and joined together ~t the mitred joint by being welded, and the rubber channels substantially meeting at the joint but not being actually joined to each other.
~' ~ j , ~
Window channel arrangements embodying the invention will now be described, by way of example only, with reference to the accompanying diagrammatic drawings in which:
Figure 1 is a perspective sectional view of one of the window channel arrangements mounted in a support channel in a vehicle body;
Figure 2 is a cross-sectional view to an enlarged scale, of the window channel arrangement of Figure l; and Figures 3 and 4 are perspective views of metal reinforcements or carriers which may be incorporated in the window channel arrangements.
The arrangements now to be more speci~ically described are for usein motor vehicle body construction, such as for sealing and guiding the movable window glass in a motor vehicle body door.
As shown in Figs.l and 2, the window channel arrangement ~ S ~ 3 ~
is mounted in posi~ion in the motor vehiele body door by being inserted in a rigid me~al suppor~ 10. As shown in lig.l, the supyort 10 comprises inner and outer portions lOA an~ 10~.
The outwardly facing side of tl~e outer portion lOB is covered by a trim strip lOC.
The window channel arran~ement has two channel-shaperl parts, an outer channel 12 made o~ plastics material and an inner channel 14 made of rubber material, see ~ .2 particularly, The plastics channel 12 has gripping lips 16 and 18 running along the outside o the opposite side walls of the channel.
Each of these lips is made of plastics material and is integral with the remainder o~ the channel 12, and is located adjacent a respective longitudinal recess 20, 22.
The re~ions 12A, 12B of the side walls of the channel 12, adjacentits mouth, are bent over, and then back along the out-sides of the side walls, so as to provide longitudinaily extend-ing slots 23, 24.
~ e plastics cllallnel 12 contains a metal reinl.orcin~
carrier 26. Any suitable form may be used Eor the me~al carrier 26. It n~cly, ~or example, comprise a serics of U-slla~)e~
metal reinforcil-~ elemcn~s arran~ed side-by-si.(le ~o define a cha~ el ~lrld connected to~ether by flexible collnectin~ linl;s, or possibly not cor-nected to each other. Instead, however, the metal carrier 26 could be made of wire looped back and ~or~h across ~he carrier. The gerleral purpose of the carrier is ~o provide stiffenin~ and reinforcement for the plas~ics chanl-.el 12 and to enable it to be more securely held within the metal suyport 10. However, other purposes of tlle me~al carrier will ~e discussed below.
~ 4 -l~igure 3 shows one particular ~orrn which ~l1e carrier 10 can t~ke. As shown, the carrier here comprises a series o~
transverse U-shaped elements 28 which are joined together by connecting links .32.
~ igure 4 shows another ~orm which the metal carrier 10 may take. Here it is shown as comprising a series o~ U-shaped elemcnts 33 wllicll are connected to~ether by connecting links 34 which are inclined ~o the lon~itudinal axis o~ tlle carrier.
In addition, a flexible tape or thread 42 may run along tr.e length of the carrier.
~ s shown in Fi~ures 1 and 2, the metal carrier 10 is completely embedded witllin the plastics material o~ the plastics channel 12, and this embedding process will also embed the plastics tape 42 in the case o~ the carrier shown in ~i~ure 4.
The embe~din~ process may be carried out by extrusion using a cross-head extruder.
The rubber channel 14 lS consiclerable thinner (e.g.l.~ n~
thick) ~han tl-e plastics channel 12 an~ does not contain any metal reinorcemellt.
As sho~, it is provided with integral inwardly directed sealing li~s 44, 46 running alon~ the length o~ the channel on ~he inside ~acing side walls thereo~. Tlle out~r surfaces of tlle lips 44, 46, as well as the inside o~ the base o~ the rubber channel 14, are covered with ~lock 47.
The rub~er chanllel 14 may be held in position inside the plastics challllel 12 in any suitable way. For example, it may be adhesively sccured therein, eithcr continuously along their mutual lengths or at intervals therealon~. Instead, however, . _ 5 ~ 5~
~he rubber channel could be held in pOSi~iOIl by being located in an appropriately shaped recess running along the insi~e o the channel 12.
~hen the window channel arrangement is fitted in position within the metal support 10, as shown in Figure 1, the side walls lOC and lOD of the inner portion lOA.:fit into the slots 23, 24 ~efilled by ~lle ben~-over outer por~ions o~ ~hc walls of ~le pl~stic cllanIlel, so as to b~ a snug fit. In ad~ition, the gripping lips 16, 18 provide a tight frictional grip on the insides o~ the walls lOC, lOD and are partially pressed into the recesses 20,.22 in the outsides of the walls of the plastic channel. In this way, the window channel arrangemen~ is held securely in position.
'l`he rubber channel 14 is thus appropriately positioned or sealing and guiding the window glass 4~, and the sealing and guiding lips 44, 46 press against thc sides of the window glass ~o provide an effective seal against draughts and moisture.
The use of the metal carrier 26 withill ~he plas~ics channel.
12 is advantageous because lt stiffens the plastics cllannel and holds it more securely within the rnetal support 10. In addition, however, it helps to provi~e dimensional stability for the window cllannel arrangement in the longitudinal direction.
This is particularly so if the metal carrier ~akes the form shown in ei~her Fi~ur~ 3 or Figure 4, where the connecting links 32 and 34 effectively prevent shrinkage of the window cllannel, which might otherwise take place in response co ~empera~ure cllallges and ageing effects. Stretching or ~he - 6 - ~750~i window channel is prevented by the connecting lin~s 32, of the me~al carrier o Figure 3, and by the ~apc ~2 in ~he rne~al carrier of Iigure 4. The metal carrier of ~igure 4 ~oes have the advanta~e, however, that it is possible ~or it ~o be com-pressed sli~htly, and this may be use~ul where small adjustments of its length are necessary during the process of ~itting it into the support 10.
In practice, vehicle doors for which the window channel arrangement may be constructed may have one or more sharp corners around the window opening, and the window channel arrangement may be pre-formed with a rllitred join or joins positioned and shaped to match such a corner or corners, as shown at X in Fig.l.
With such a pre-formed type of construction, it is particularly desirable tha~ the arrangement should be dimensionally stable and accurate so that it correctly fits the window frame and support 10 for which it is designed. The dimensional stability provlded by the metal carrier 26 is particularly advantageous here. Furthermore, the form of carrier shown in Figure ~ is advantageous because its limited compressibility allo~s some dimensional adjustment to suit tolerances, The use of a dual form of construction, employing both plastics and rubber channels~ is advantageous for a number of reasons.
The rubber channel 14 is very simple in design, much simpler than it would be if the whole window channel arrangement were made of rubber, and it can thus be manufactured by an extrusion process employing a very simple die (or a multiple 7 ~750~35;
die extruding more than one rubber channel simultaneousl~
The use o~ a plastics outer channel 12 is advantageous because the plastics material can be easily extruded around the metal carrier 26, can be arranged to be coloured if desired for the purposes of improving appearance, and can easily be arranged to carry a trim strip, such as a bright strip of metallised material.
Furthermore, there are advantages where a pre-formed construction is used, as described above, involving one or more mitred corners ~, Figolo It is much easier to form such mitred corners in a plast;ics channel than in a rubber channel, because the plastics channel can be mitre-cut and the two portions joined togeth2r by a simple welding operation as at 50 in Fig.l. If a mitred join is required between two portions of rubber channel, a much more complex vulcanising operation is necesssary, normally involving the use of expensive moulds.
~ith the form of window channel arrangement illustrated, it is only necessary to provide a mitre join (at 50, Fig.l) in -the plastics channel 12; at the resultant corner, the rubber channel 14 can be simply cut through, so as to provide two portions meeting at the corner, though actually separate; the gap between such portions is not of course a disadvantage because the joined plastics channel supporting them provides a continuous weather seal.
The metal carrier 26 has the additional advantage that it reduces the possibility, which can occur with an unreinforced window channel, that the window channel becomes distorted and - 8 _ ~ ~ ~ S ~ ~
displaced by pressure exerted on i~ from ~he window ~lass when the latter is moved into its closed position.
The invention relates to channel-shaped sealing and guiding strips. For example, embodiments of the invention may be used as windo~ sealing and guiding channels in motor vehicle bodies.
According to the invention, there is provided an assembly of ~wo window sealing and guiding channel arrangemen~s which are connected together by a mitred joint, each channel arrangemen~ oomprising a first, outer, channel made of plastics material and a second, inner, channel fitted inside the first channel and made of rubber material, the plastics channels being mitre-cut and joined together ~t the mitred joint by being welded, and the rubber channels substantially meeting at the joint but not being actually joined to each other.
~' ~ j , ~
Window channel arrangements embodying the invention will now be described, by way of example only, with reference to the accompanying diagrammatic drawings in which:
Figure 1 is a perspective sectional view of one of the window channel arrangements mounted in a support channel in a vehicle body;
Figure 2 is a cross-sectional view to an enlarged scale, of the window channel arrangement of Figure l; and Figures 3 and 4 are perspective views of metal reinforcements or carriers which may be incorporated in the window channel arrangements.
The arrangements now to be more speci~ically described are for usein motor vehicle body construction, such as for sealing and guiding the movable window glass in a motor vehicle body door.
As shown in Figs.l and 2, the window channel arrangement ~ S ~ 3 ~
is mounted in posi~ion in the motor vehiele body door by being inserted in a rigid me~al suppor~ 10. As shown in lig.l, the supyort 10 comprises inner and outer portions lOA an~ 10~.
The outwardly facing side of tl~e outer portion lOB is covered by a trim strip lOC.
The window channel arran~ement has two channel-shaperl parts, an outer channel 12 made o~ plastics material and an inner channel 14 made of rubber material, see ~ .2 particularly, The plastics channel 12 has gripping lips 16 and 18 running along the outside o the opposite side walls of the channel.
Each of these lips is made of plastics material and is integral with the remainder o~ the channel 12, and is located adjacent a respective longitudinal recess 20, 22.
The re~ions 12A, 12B of the side walls of the channel 12, adjacentits mouth, are bent over, and then back along the out-sides of the side walls, so as to provide longitudinaily extend-ing slots 23, 24.
~ e plastics cllallnel 12 contains a metal reinl.orcin~
carrier 26. Any suitable form may be used Eor the me~al carrier 26. It n~cly, ~or example, comprise a serics of U-slla~)e~
metal reinforcil-~ elemcn~s arran~ed side-by-si.(le ~o define a cha~ el ~lrld connected to~ether by flexible collnectin~ linl;s, or possibly not cor-nected to each other. Instead, however, the metal carrier 26 could be made of wire looped back and ~or~h across ~he carrier. The gerleral purpose of the carrier is ~o provide stiffenin~ and reinforcement for the plas~ics chanl-.el 12 and to enable it to be more securely held within the metal suyport 10. However, other purposes of tlle me~al carrier will ~e discussed below.
~ 4 -l~igure 3 shows one particular ~orrn which ~l1e carrier 10 can t~ke. As shown, the carrier here comprises a series o~
transverse U-shaped elements 28 which are joined together by connecting links .32.
~ igure 4 shows another ~orm which the metal carrier 10 may take. Here it is shown as comprising a series o~ U-shaped elemcnts 33 wllicll are connected to~ether by connecting links 34 which are inclined ~o the lon~itudinal axis o~ tlle carrier.
In addition, a flexible tape or thread 42 may run along tr.e length of the carrier.
~ s shown in Fi~ures 1 and 2, the metal carrier 10 is completely embedded witllin the plastics material o~ the plastics channel 12, and this embedding process will also embed the plastics tape 42 in the case o~ the carrier shown in ~i~ure 4.
The embe~din~ process may be carried out by extrusion using a cross-head extruder.
The rubber channel 14 lS consiclerable thinner (e.g.l.~ n~
thick) ~han tl-e plastics channel 12 an~ does not contain any metal reinorcemellt.
As sho~, it is provided with integral inwardly directed sealing li~s 44, 46 running alon~ the length o~ the channel on ~he inside ~acing side walls thereo~. Tlle out~r surfaces of tlle lips 44, 46, as well as the inside o~ the base o~ the rubber channel 14, are covered with ~lock 47.
The rub~er chanllel 14 may be held in position inside the plastics challllel 12 in any suitable way. For example, it may be adhesively sccured therein, eithcr continuously along their mutual lengths or at intervals therealon~. Instead, however, . _ 5 ~ 5~
~he rubber channel could be held in pOSi~iOIl by being located in an appropriately shaped recess running along the insi~e o the channel 12.
~hen the window channel arrangement is fitted in position within the metal support 10, as shown in Figure 1, the side walls lOC and lOD of the inner portion lOA.:fit into the slots 23, 24 ~efilled by ~lle ben~-over outer por~ions o~ ~hc walls of ~le pl~stic cllanIlel, so as to b~ a snug fit. In ad~ition, the gripping lips 16, 18 provide a tight frictional grip on the insides o~ the walls lOC, lOD and are partially pressed into the recesses 20,.22 in the outsides of the walls of the plastic channel. In this way, the window channel arrangemen~ is held securely in position.
'l`he rubber channel 14 is thus appropriately positioned or sealing and guiding the window glass 4~, and the sealing and guiding lips 44, 46 press against thc sides of the window glass ~o provide an effective seal against draughts and moisture.
The use of the metal carrier 26 withill ~he plas~ics channel.
12 is advantageous because lt stiffens the plastics cllannel and holds it more securely within the rnetal support 10. In addition, however, it helps to provi~e dimensional stability for the window cllannel arrangement in the longitudinal direction.
This is particularly so if the metal carrier ~akes the form shown in ei~her Fi~ur~ 3 or Figure 4, where the connecting links 32 and 34 effectively prevent shrinkage of the window cllannel, which might otherwise take place in response co ~empera~ure cllallges and ageing effects. Stretching or ~he - 6 - ~750~i window channel is prevented by the connecting lin~s 32, of the me~al carrier o Figure 3, and by the ~apc ~2 in ~he rne~al carrier of Iigure 4. The metal carrier of ~igure 4 ~oes have the advanta~e, however, that it is possible ~or it ~o be com-pressed sli~htly, and this may be use~ul where small adjustments of its length are necessary during the process of ~itting it into the support 10.
In practice, vehicle doors for which the window channel arrangement may be constructed may have one or more sharp corners around the window opening, and the window channel arrangement may be pre-formed with a rllitred join or joins positioned and shaped to match such a corner or corners, as shown at X in Fig.l.
With such a pre-formed type of construction, it is particularly desirable tha~ the arrangement should be dimensionally stable and accurate so that it correctly fits the window frame and support 10 for which it is designed. The dimensional stability provlded by the metal carrier 26 is particularly advantageous here. Furthermore, the form of carrier shown in Figure ~ is advantageous because its limited compressibility allo~s some dimensional adjustment to suit tolerances, The use of a dual form of construction, employing both plastics and rubber channels~ is advantageous for a number of reasons.
The rubber channel 14 is very simple in design, much simpler than it would be if the whole window channel arrangement were made of rubber, and it can thus be manufactured by an extrusion process employing a very simple die (or a multiple 7 ~750~35;
die extruding more than one rubber channel simultaneousl~
The use o~ a plastics outer channel 12 is advantageous because the plastics material can be easily extruded around the metal carrier 26, can be arranged to be coloured if desired for the purposes of improving appearance, and can easily be arranged to carry a trim strip, such as a bright strip of metallised material.
Furthermore, there are advantages where a pre-formed construction is used, as described above, involving one or more mitred corners ~, Figolo It is much easier to form such mitred corners in a plast;ics channel than in a rubber channel, because the plastics channel can be mitre-cut and the two portions joined togeth2r by a simple welding operation as at 50 in Fig.l. If a mitred join is required between two portions of rubber channel, a much more complex vulcanising operation is necesssary, normally involving the use of expensive moulds.
~ith the form of window channel arrangement illustrated, it is only necessary to provide a mitre join (at 50, Fig.l) in -the plastics channel 12; at the resultant corner, the rubber channel 14 can be simply cut through, so as to provide two portions meeting at the corner, though actually separate; the gap between such portions is not of course a disadvantage because the joined plastics channel supporting them provides a continuous weather seal.
The metal carrier 26 has the additional advantage that it reduces the possibility, which can occur with an unreinforced window channel, that the window channel becomes distorted and - 8 _ ~ ~ ~ S ~ ~
displaced by pressure exerted on i~ from ~he window ~lass when the latter is moved into its closed position.
Claims (10)
1. An assembly of two window sealing and guiding channel arrangements which are connected together by a mitred joint, each channel arrangement comprising a first, outer, channel made of plastics material and a second, inner, channel fitted inside the first channel and made of rubber material, the plastics channels being mitre-cut and joined together at the mitred joint by being welded, and the rubber channels substantially meeting at the joint but not being actually joined to each other.
2. An assembly according to claim 1, in which each outer channel includes a reinforcing carrier.
3. An assembly according to claim 2, in which each carrier is made of metal and resists stretching and compression in the longitudinal direction of the outer channel.
4. An assembly according to claim 1, in which each inner channel is secured within the respective outer channel by adhesive.
5. An assembly according to claim 1, in which each inner channel is secured within the respective outer channel by being mechanically locked therein.
6. An assembly according to claim 1, in which sealing lips are provided running longitudinally along the outside surface of the side walls of each outer channel for sealingly and frictionally engaging a rigid support in which the assembly is fitted in use.
7. An assembly according to claim 6, in which the said lips run alongside recesses of complementary shape in the outer surfaces of the side walls of each plastics channel, so that the lips at least partially enter the recesses when the respective plastics channel is fitted onto the said rigid support.
8. An assembly according to claim 6, in which the side walls of each plastics channel are extended so as to have portions curved over and running back along the outside surfaces of the side walls of the plastics channel to define therewith respective longitudinal slots for receiving parts of the said rigid support.
9. An assembly according to claim 1, in which each rubber channel is provided with sealing and guiding lips running along the length of the facing inside surfaces of its side walls so as to engage the opposite surfaces of a window glass in use.
10. An assembly according to claim 9, in which the surfaces of the lips which engage the window glass in use are flocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000396377A CA1175085A (en) | 1982-02-16 | 1982-02-16 | Channel-shaped sealing and guiding strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000396377A CA1175085A (en) | 1982-02-16 | 1982-02-16 | Channel-shaped sealing and guiding strips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1175085A true CA1175085A (en) | 1984-09-25 |
Family
ID=4122073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000396377A Expired CA1175085A (en) | 1982-02-16 | 1982-02-16 | Channel-shaped sealing and guiding strips |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1175085A (en) |
-
1982
- 1982-02-16 CA CA000396377A patent/CA1175085A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |