Patent Publication Number: US-2023137448-A1

Title: Connector suitable to be connected to a multi port extruded tube

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is the National Stage of International PCT Application No. PCT/EP2021/055798 filed on 8 Mar. 2021, which claims priority to and all advantages of European Patent Application No 20290034.6 filed on 26 Mar. 2020, the contents of which are hereby incorporated by reference. 
    
    
     FIELD OF THE INVENTION 
     The invention relates to a connector that is suitable to be connected to a multi port extruded tube. The invention also relates to an assembly of such a connector and a multi port tube. The invention also relates to a method for producing such an assembly. 
     BACKGROUND OF THE INVENTION 
     Multi port extruded tubes are known. Particularly they are known in their use in cooling systems, for example in cooling systems for vehicles. In this particular field of use, but also in other fields of use of multi port extruded tubes the need arises to connect the multi port extruded tube to other parts, for example to a hose. U.S. Pat. No. 10,208,879 B2 shows such a connector. 
     In the design known from U.S. Pat. No. 10,208,879 B2 the multi port extruded tube (or “flat tube” as it is called in U.S. Pat. No. 10,208,879 B2) is inserted into the connector in a sliding manner. When being slid into the connector, the multi port extruded tube passes through the seal  56  as shown in FIG. 3 of U.S. Pat. No. 10,208,879 B2. Multi port extruded tubes of the kind used in U.S. Pat. No. 10,208,879 B2 are typically cut off from a longer extruded part. Typically, when the multi port extruded tube is cut off from the longer extruded tube, this is performed by way of scoring a long extruded tube and simply braking the tube at the score-line or by a simple cutting action without any smoothing of the cutting edges being performed thereafter. This leads to the problem, that a multi port extruded tube that is inserted into the connector as known from U.S. Pat. No. 10,208,879 B2 can damage the seal  56  as it is being pushed through this seal. 
     Given this background, the problem to be solved by the invention is to suggest a connector that is suitable to be connected to a multi port extruded tube, whereby the connector is to provide a good and reliable sealing inside the connector. 
     BRIEF SUMMARY OF THE INVENTION 
     Disclosed is a connector suitable to be connected to a multi port extruded tube, the connector comprising a socket suitable for an end section of a multi port extruded tube to be inserted into the socket along a linear insertion direction. The socket contains an end section receiving space suitable to receive the end section of a multi port extruded tube, the end section receiving space bordering a first opening suitable for a multi port extruded tube to extend through it. The connector further comprises a cap arranged inside the socket such that the cap can slide from a forward position that is closer to the first opening to a backward position that is further away from the first opening. The cap has an outer circumferential surface whereby a sealing is provided inside the socket that contacts the outer circumferential surface of the cap in the forward position of the cap, the sealing being in a compressed state when the cap is in the forward position, and whereby at least a part of the sealing expands into a space that was occupied by a part of the cap when the cap was in the forward position and is given free when the cap slides from the forward position into the backward position. 
     The connector according to the invention is suitable to be connect to a multi port extruded tube. For this purpose the connector comprises a socket that is suitable for an end section of a multi port extruded tube to be inserted into the socket along a linear insertion direction. 
     The socket contains an end section receiving space that is suitable to receive the end section of a multi port extruded tube. The end section receiving space has a first opening that is suitable for a multi port extruded tube to extend through it. 
     According to the invention, a cap is arranged inside the socket such that the cap can slide from a forward position that is closer to the first opening to a backward position that is further away from the first opening. 
     In a preferred embodiment, the connector has one cap guiding surface or in a preferred embodiment at least one cap guiding surface and even in a more preferred embodiment several cap guiding surfaces. In a preferred embodiment, the cap slides along a cap guiding surface at least for a part of the way that the cap travels from the forward position to the backward position. There might be a sequence of cap guiding surfaces. As the cap travels from the forward position to the backward position, it might be guided by a cap guiding surface that is arranged closer to the forward position first and then later be guided by a further cap guiding surface that is arranged closer to the backward position. In a preferred embodiment, the cap travels along a straight line as it moves from the forward position towards the backward position. 
     In a preferred embodiment, the cap is guided by the cap guiding surface (in the embodiments, where there is only one cap guiding surface) or is guided by the plurality of cap guiding surface (for the embodiments where there is a plurality of cap guiding surfaces) to travel along the straight line from the forward position towards the backward position. In a preferred embodiment, the cap is a rectangular cap. In a preferred embodiment, the cap has an extend into a first direction that is larger then the extent into a second direction, whereby by the second direction is perpendicular to the first direction. In a preferred embodiment, the cap, especially when it is a plate, has an extend into a third direction that is perpendicular to the first direction and perpendicular to the second direction, which is smaller than the extend in the first direction, but can be smaller than the extent in the second direction or can be of the same extent as in the second direction. In a preferred embodiment, the extent of the cap in the first direction is at least double the extent in the second direction, more preferably more than five times the extent in the second direction, more preferably more than 10 times the extent into the second direction. In a preferred embodiment, the cross-section of the cap has the same shape of its cross-section then the shape of the cross-section of the multi port extruded tube. In a preferred embodiment, the cross-sectional area of the cap is slightly larger than the cross-sectional area of the multi port extruded tube. 
     In a preferred embodiment the cap has an interior space that is suitable to receive a part of the end section of a multi port extruded tube that is inserted into the end section receiving space. Embodiments are, however also feasible, where the cap is not designed to surround/receive a part of the end section of the multi port extruded tube, but is designed as a plate that can be placed in front of the end of the multi port extruded tube. It has been found that in the manufacture of the multi port extruded tube a clear cut can be made so that the outer circumferential surface of the multi port extruded tube is at a sharp 90° angle a front face of the multi port extruded tube. It has been found that already this sharp 90° angle can lead to damage at the sealing, if this sharp edge of the e multi port extruded tube were to come into contact with the sealing while the multi port extruded tube is pushed into the socket. The inventors have found that already the embodiment of placing a cap that is designed as a plate that is placed in front of the front face of the multi port extruded tube prevents such a sharp edge to damage the sealing. In such a design, the cap designed as a plate can have pins or projections that project from the plate towards the multi port extruded tube and that can be inserted into at least some of the ports of the multi-port extruded tube to align the cap in the shape of a plate with the multi port extruded tube. 
     According to the invention the cap has an outer circumferential surface. In a preferred embodiment, a part of the outer circumferential surface is made up by a plane surface. In a preferred embodiment, a part of the circumferential surface can be made up by a series of partial surfaces, whereby each partial surface of the series is bordered by a further partial surface of the series, such that the series of partial surfaces makes up a ring. In a preferred embodiment, the ring encircles the interior space, if in the specific embodiment such an interior space is present or encircles a fluid opening of the cap that is designed as a through hole through the entire cap. In a preferred embodiment at least two of the partial surfaces of the series of partial surfaces are each made up by a plane surface. A rectangularly shaped cap can be made up by a series of four partial surfaces, whereby the series has two long, rectangular surfaces that run in parallel to each other. Each of the long, rectangular partial surfaces is joined by a smaller partial surface that is either quadratic or also rectangular, whereby these smaller partial surfaces are arranged at 90° to the longer rectangular surfaces. To make the cap quasi-rectangular, which is also a preferred embodiment, the longer rectangular partial surfaces are kept, but the smaller partial surfaces are made up of partial surfaces that form part of a cylinder. These partially cylindrical smaller partial surfaces provide the cap with rounded ends. It is often found that multi port extruded tubes have rounded ends, as for example shown in FIG. 1 of U.S. Pat. No. 10,208,879 B2. In a preferred embodiment, the shape of the cross-section of the outer circumferential surface of the cap resembles the shape cross-section of the multi port extruded tube, but might be bigger in size. 
     According to the invention a sealing is provided inside the socket that contacts the outer circumferential surface of the cap in the forward position of the cap, whereby the sealing is in a compressed state, when the cap is in the forward position. The sealing is provided to prevent any fluid that flows out of the end of the end section of the multi port extruded tube that has been placed into the end section receiving space from flowing backwards along the multi port extruded tube and out of the first opening (the first opening being provided for the multi-part extruded tube to extend through it). “A compressed state” of the sealing is understood to be a state, in which a surface of the sealing has been displaced from the position it would take in the normal state of the sealing. The normal state of the sealing is understood to be the state of the sealing that the sealing will take up, if it is left alone and untouched, especially un-stretched by any influence from the outside. A sealing can, for example, be in a compressed state, if the sealing is made as an O-ring and the O-ring is expanded radially outward. A compressed state of the sealing can also be seen in a sealing that has a main body and a lip extending from the main body, whereby in the compressed state the lip has been swiveled relative to the basic body away from a position that the lip would normally take in the normal state of this seal. 
     According to the invention at least a part of the sealing expands into a space that was occupied by a part of the cap when the cap was in the forward position and is given free when the cap slides from the forward position into the backward position. In the first position a part of the cap hence displaces a part of the sealing away from a space, which in the forward position is then occupied by that part of the cap. As the cap leaves the forward position and hence gives free the space that was occupied by a part of the cap, when the cap was in the forward position the sealing expands into this space. In a preferred embodiment, the sealing is still partially compressed even after it has expanded into the space that was occupied by a part of the cap when the cap was in the forward position and was given free when the cap slit from the forward position into the backward position. The sealing is still compressed, for example to a lesser extent that it was previously compressed. It still has the ability to press against a surface and provide a sealing at this surface. In a preferred embodiment, this surface that the still partially compressed sealing presses against is an outer circumferential surface of the multi port extruded tube. Hence even in the state, when the sealing has expanded into a space that was occupied by a part of the cap when the cap was in the forward position, the sealing can still perform a sealing function and prevent a fluid that exits the multi-part extruded tube at the end of the end section to flow backwards along the multi port extruded tube and out of the first opening. 
     If in a preferred embodiment the cap has an interior space suitable to receive a part of the end section of a multi port extruded tube that is inserted into the end section receiving space, the cap can prevent the seal from being damaged by a possibly roughly cut and/or sharply cut end of the end section of a multi port extruded tube. The cap in the forward position compresses the sealing and in doing so holds the sealing out of the way of the end section of the multi port extruded tube. At the same time by way of providing the interior space, the cap takes up the possibly roughly cut and/or sharply cut end of the end section of the multi port extruded tube and hence prevents that the possibly roughly cut and/or sharply cut end of the end section of the multi port extruded tube comes into contact with the sealing and hence prevents damage to the sealing being inflicted by a possibly roughly cut end of the end section of the multi port extruded tube. In the embodiments where the cap is a plate, placing the plate in front of the roughly cut and/or sharply cut end also prevents this end to come into contact with the sealing. 
     At the same time by way of the specific design provided by the invention, namely by way of the cap giving free a space that was previously occupied by a part of the cap when the cap was in the forward position when the cap slides from the forward position into the backward position, the design according to the invention allows the sealing to seal directly against the outer circumferential surface of the multi port extruded tube. This reduces the number of sealing surfaces and reduces the number of ways that fluid could possibly flow backward from the end of the end section of the multi port extruded tube towards the first opening. 
     For the embodiments where the cap has an interior space to take up a part of the end section of the multi port extruded tube, this design reduces the efforts of having to seal the outer circumferential surface of that part of the end section side of the multi port extruded tube that is arranged inside the interior space against the walls of the cap that border this interior space. As the cap is in the forward position and compresses the sealing, a bypass for fluid could be seen by way of flowing out of the end of the end section of the multi port extruded tube, but flowing in between the surfaces of the cap that border the interior space and the outer circumferential surface of the multi port extruded tube. Because of the design of the invention, which allows the sealing to seal directly against the outer circumferential surface of the multi port extruded tube when the cap has been moved into the backward position, this flow path between the surfaces of the cap that border the interior space and the outer circumferential surface of the multi port extruded tube might still exist, but any fluid flowing through this flow path will not reach the first opening as the sealing seals directly against the outer circumferential surface of the multi port extruded tube at a position further downwards from the cap that has reached its backward position. 
     In a preferred embodiment the cap has an initial position. The initial position might be the same position as the forward position. That means that the connector might be sold in a state, where the cap is in the forward position. In such a design, however, the cap would hold the sealing in its compressed state for a substantial period of time, namely until the connector has been delivered to the customer and has been put in place at the customer. It might be preferred that the sealing is not held in this compressed state for a longer period of time, for example to prevent the restoring forces of the sealing towards its normal position to weaken. In a preferred embodiment, the initial position of the cap is different to the forward position of the cap. In a preferred embodiment, the initial position is closer to the first opening than the forward position. In a preferred embodiment, the connector has a delivery state, which is the state, in which the connector is delivered to the customer prior to being connected to the multi port extruded tube. 
     In its delivery state the cap is in the initial position. The Connector might have means for holding the cap in a specific initial position. Such means could be inwardly pointing rims or balls that point inwards into the socket and which are arranged on either side of the cap when the cap is in the initial position. This inwardly pointing rims or balls are of a small height such that they are able to keep the cap in the initial position in the delivery state of the connector, but allow the cap to easily pass over the rim or the balls, when the cap is to be moved from the initial position towards the forward position, for example when the end section of a multi port extruded tube has been inserted into the socket through the first opening and is pushed further into the socket, thereby pushing the cap from the initial position towards the forward position. In an alternative embodiment, the connector might be arranged in such a manner that the first opening is designed such that it does not let the cap pass through the first opening. The circumference of the first opening hence would prevent the cap from leaving the socket. In such an embodiment, the initial position of the cap could be a free floating position somewhere between the first opening and the forward position. In the delivery state in such an embodiment, the cap would be able to freely glide between the first opening, where it is stopped from leaving the connector, and the forward position. 
     In a further alternative embodiment, the initial position of the cap is outside a housing of the connector. In such a design, the delivery state of the connector would be a system of the remaining parts of the connector on the one hand and the cap that has not been inserted into the socket yet on the other hand. In such a design, a part of the end section of the multi port extruded tube could be inserted into the interior space of the cap, while the cap is still outside the socket of the connector. The multi port extruded tube with the cap being slid over the end section of the multi port extruded tube would then be jointly inserted through the first opening into the socket and moved towards the forward position and through the forward position into the backward position. If the cap is designed as a plate, the plate can be set against the end of the multi port extruded tube outside a connector housing and inserted jointly with the multi port extruded tube through the first opening. Means could be provide at a cap that is a plate that hold the cap at the end of the multi port extruded tube, for example projections that project into some of the ports of the multi port extruded tube. 
     In a preferred embodiment, the cap has at least one fluid opening through which a fluid can pass. In a preferred embodiment, the cap has an interior space opening, which is provided at the side of the cap, from which the end section of the multi port extruded tube is to be inserted into the end section receiving space. In a preferred embodiment, the fluid opening of the cap is arranged on the opposite side of the cap relative to the side at which the interior space opening is provided. In a preferred embodiment the fluid opening connects the interior space with the outside of the cap at the opposite end of the interior space opening. 
     In a preferred embodiment, especially with a cap that is a plate, the fluid opening is a through hole that connects one side of the plate with the opposite side of the plate. 
     In a preferred embodiment, the fluid opening of the cap is smaller than the interior space opening. In a preferred embodiment, the fluid opening of the cap has a longitudinal shape. In a preferred embodiment, the cross-sectional area of the fluid opening of the cap is at least of the same magnitude, preferably at least of the same size as the joint cross-sectional area of the ports of the multi port extruded tube. A multi port extruded tube typically has a multitude of channels. At the end of the end section the channels of the multi port extruded tube each have an end opening (a port). The joint cross-sectional area is the sum of the individual cross-sectional areas of the ports at the end of the end section of the multi port extruded tube. In order to prevent a pressure drop across the fluid opening of the cap, it is preferred that the cross-sectional area of the fluid opening of the cap is as large as the cross-sectional area that the fluid passes through as it leaves the multi port extruded tube at its end. In a preferred embodiment, the cross-sectional area of the fluid opening of the cap is even larger than the joint cross-sectional area in order to prevent any pressure loss across the fluid opening. In order to provide the cap with stability and to reduce the weakening effect of a large fluid opening bars might be provided that cross the fluid opening and stabilize the walls of the cap that border the fluid opening. 
     In a preferred embodiment the sealing has a basic body, which might be rectangular or elliptical or round in cross section and has a lip that extends from this basic body. The lip can be designed to swivel relative to the basic body about the joint, where the lip joins the basic body. In addition or alternatively the lip can be slim in cross section, so that the tip of the lip can be bent away from a normal position upon application of a force. In a preferred embodiment, the sealing of this type has a basic body that is ring shaped and hence surrounds a central opening. The lip preferably is arranged in such a way that it points inwards or runs at an angle inwardly and hence reduces the central opening of the basic body. The lip is preferably designed in such a way, that by application of a force that points radially outward, the lip can be displaced radially outward. If the lip has been displaced radially outward, a restoring force is created that wants to restore the lip into the undisplaced position. 
     Designs are feasible, where the sealing is an O-ring. However, it is preferred that the sealing is not an O-ring. Multi port extruded tubes often have a longitudinal cross section that is either rectangular in cross-section or quasi rectangular, with the small sides being rounded. Experience has shown, that bodies of such a cross-section are difficult to be sealed with O-rings. It is often difficult to have the O-ring follow the exterior shape of such bodies especially at the corners of such bodies. Hence it is preferred that the sealing has a basic body and a lip extending from the basic body. Experience has shown that such sealings can be more easily made to have rectangular or quasi rectangular central opening and that the lip can still seal well against a rectangular element, for example a multi port extruded tube being inserted into such an rectangular opening of the basic body and the lip of the sealing. 
     In a preferred embodiment the socket has a recess. In a preferred embodiment at least a part of the sealing is arranged inside the recess when the cap is in the forward position. In a preferred embodiment, at least a part of the sealing is also arranged inside the recess, when the cap is in the backward position. The part of the sealing that is arranged inside the recess when the cap is in the forward position might be larger than the part of the sealing that is arranged inside the recess when the cap is in the backward position. The sealing hence might move slightly out of the recess after the cap has left the forward position. For example if the sealing is an O-ring that has been expanded by the cap into the recess, when the cap is in the forward position, the O-ring might partially leave the recess as the cap moves away from the forward position and gives free a space that it has occupied as it was in the forward position. In a design, where the sealing has a basic body and a lip extending from the basic body, the connector can be designed in such a way that the basic body is fully arranged inside the recess and remains in the recess, regardless of the position of the cap, while the lip changes its position in dependence of the position of the cap. In such a design, the recess might have a pocket, in which the basic body is arranged. The pocket might have an inner wall that closes a part of the recess towards the end section receiving space, thereby forming the pocket within the recess. 
     In a preferred embodiment the socket has a cap abutment surface. In a preferred embodiment of the cap abuts against the cap abutment surface in the backward position. The cap abutment surface can be used to define the final position of the cap and hence the final position of the multi port extruded tube within the socket. The cup abutment surface can also be used to give the worker that connects the connector to the multi port extruded tube a feeling for having the multi port extruded tube inserted into the socket as much as intended by the designer of the connector. The worker that inserts the end section of the multi port extruded tube into the socket will simply have to push the multi port extruded tube as far into the socket as it will go. The amount, how far the end section of the multi port extruded tube will go into the sock can be designed by appropriate placement of the cap abutment surface. 
     In a preferred embodiment the socket has a guiding sleeve that is arranged at least in part in the socket. In a preferred embodiment the guiding sleeve has a guide surface that partially delimits the end section receiving space. The guiding sleeve can be a permanent part of the connector. The guiding sleeve can be made as one piece with further elements of the connector. The guiding sleeve can, however, be a separate part of the connector, but is a separate part of the connector that is fixedly attached to other parts of the connector. The attachment of the guiding sleeve to other parts of the connector can be made by glueing, welding or frictional engagement or even interference fit or a clip and recess arrangement can be provided between the guiding sleeve and the further part of the connector that the guiding sleeve is connected to. The guiding sleeve might have a protruding clip that engages into a recess of a further part of the connector as the sleeve is inserted into the socket. 
     The guiding sleeve can have a front end, whereby a recess delimiting surface is arranged at the front end of the guiding sleeve. The front end of the guiding sleeve preferably is the end of the guiding sleeve that is arranged deepest inside the socket. This front end can be used to delimit the recess, in which at least a part of the sealing is arranged. This design also allows easy assembly of the connector. It allows for a connector housing to be provided, whereby the socket is made as part of the connector housing. The socket inside the connector housing might have a step arrangement in the walls that delimit the socket. The sealing might be placed in the area of the step. The guiding sleeve might then be inserted into the socket, whereby a surface of the front end of the guiding sleeve is used to make a recess out of the step that has already been provided in the connector housing. The front end of the guiding sleeve might also provide the inner wall that makes a pocket in the recess. 
     In an alternative embodiment, the guiding sleeve in the delivery state of the connector is not attached as to the connector house, but a loose part. When assembling the connector, the guide sleeve might be pushed over the end section of the multi port extruded tube. Afterwards the cap might be arranged over the end of the end section of the multi port extruded tube, while in an alternative embodiment, the cap is arranged inside the socket of the connector. When assembling the connector in this embodiment, the multi port extruded tube with the guiding sleeve arranged on the end section of the multi port extruded tube is then inserted into the socket of the connector. In a preferred embodiment, the guide sleeve then has means to fixedly connect itself to the remaining parts of the connector, for example a clip and recess arrangement. Alternatively, the guiding sleeve might be glued, welded or arranged with frictional engagement or even interference fit into the remaining parts of the connector. In specific embodiments of the invention, the guiding sleeve might also be fixedly attached to the multi port extruded tube, for example might be glued to the multi port extruded tube or might be attached to the multi port extruded tube by way of frictional engagement. Designs are also feasible, where connecting elements are attached to the multi port extruded tube, like for example the locking taps  66  in the design known from U.S. Pat. No. 10,208,879 B2 and that these connecting means are used to connect the multi port extruded tube to the guiding sleeve. 
     In the embodiments, where the guiding sleeve has a guide surface, the guide surface might be used to guide the end section of the multi port extruded tube as it is pushed into the socket. The guide surface might be used to guide the end section of the multi port extruded tube towards the interior space of the cap for the embodiments that have an interior space. 
     In a preferred embodiment, the guiding sleeve has a cap abutment surface. In a preferred embodiment, the cap abutment surface on the guiding sleeve defines the closest position that the cap can take up in relation to the first opening. The cap abutment surface on the guiding sleeve can be used to define the initial position of the cap. 
     In a preferred embodiment, the connector is made up of plastic parts. The connector in a preferred embodiment has a connector housing. In a preferred embodiment, the connector housing has a fluid channel. In a preferred embodiment, the connector housing has an inlet opening and has an outlet opening. In a preferred embodiment, the channel inside the housing of the connector leads from the inlet opening to the outlet opening. In an alternative embodiment, the channel only has one channel opening in the housing. In a preferred embodiment, the socket has an end opening that opens towards the channel. In a preferred embodiment, the end opening is arranged on the opposite side of the first opening. The end opening allows fluid that flows out of the end of the end section of the multi port extruded tube to flow into the channel. This fluid preferably passes through the fluid opening in the cap. The fluid that leaves the end of the end section of the multi port extruded tube hence preferably flows out of the end of the multi port extruded tube and through the fluid opening of the cap and through the end opening of the socket into the channel of the connector housing. 
     Designs are feasible, like the one shown in U.S. Pat. No. 10,208,879 B2, where the fluid flows through the channel from an inlet opening in the connector housing to an outlet opening in the connector housing and fluid from the multi port extruded tube either flows out of the multi port extruded tube and into the channel thereby joining the fluid that is flowing through the channel from the inlet opening to the outlet opening. Or a part of the fluid that flows from the inlet opening of the connector housing through the channel to the outlet opening of the connector housing branches off from the channel and flows through the end and into the multi port extruded tube. In a design, where the connector housing only has one channel opening, the fluid flows from the multi port extruded tube through the end opening into the channel and out of the channel opening of the connector housing or flows from the channel opening of the connector housing through the channel and the end opening into the multi port extruded tube. 
     In a preferred embodiment, the channel in the connector housing has a longitudinal extent. In a preferred embodiment, the linear insertion direction along which the multi port extruded tube can be inserted into the socket is at an angle of 90° to the flowing direction in the channel. 
     The assembly according to the invention has a connector according to the invention and has a multi port extruded tube, whereby an end section of the multi port extruded tube is arranged in the socket. 
     In a preferred embodiment, the multi port extruded tube has a longitudinal extent. A preferred embodiment, the multi port extruded tube has channels that run inside the multi port extruded tube to the ports at the end of the multi port extruded tube. In a preferred embodiment, the channels run in parallel to each other and in the preferred embodiment run parallel to the longitudinal extent of the multi port extruded tube. In a preferred embodiment, the linear insertion direction, which is the direction, in which the multi port extruded tube is inserted into the socket, runs in parallel to the channels in the multi port extruded tube and/or in parallel (or in the same direction) to the longitudinal direction of the multi port extruded tube. 
     In a preferred embodiment the multi port extruded tube has a height that is taken from the range of 1 mm to 15 mm, more preferably that is taken from the range of 2 mm to 10 mm. In a preferred embodiment the multi port extruded tube has a width that is taken from the range of 50 mm to 300 mm, more preferably that is taken from the range of 75 mm to 200 mm. In a preferred embodiment the multi port extruded tube has a length that is taken from the range of 100 mm to 2000 mm, more preferably that is taken from the range of 100 mm to 1500 mm. 
     In a preferred embodiment, the socket is larger then the end section receiving space. In embodiments, where a guiding sleeve is used and where the guiding sleeve is a separate element to other parts of the connector, for example a separate element to a connector housing, the connector housing might have a socket, which is large enough to also receive the guiding sleeve. The end section receiving space then is a smaller space than the socket, namely the space that is in a preferred embodiment delimited in part by a guide surface arranged on the guide sleeve that is arranged in the socket. However, also embodiments are feasible, where the socket has the same shape than the end section receiving space, for example, where no guide sleeve is present and guide surfaces that partially delimit the end section receiving space are provided directly on the connector house. 
     In a preferred embodiment, the first opening is a longitudinal opening. A longitudinal opening is an opening that has an extend into a first direction that is larger then the extent into a second direction, whereby by the second direction is perpendicular to the first direction. In a preferred embodiment, the extent of the first opening in the first direction is at least double the extent in the second direction, more preferably more than five times the extent in the second direction, more preferably more than 10 times the extent into the second direction. In a preferred embodiment, the first opening has the same shape of its cross-section then the shape of the cross-section of the multi port extruded tube. In a preferred embodiment, the cross-sectional area of the first opening is slightly larger than the cross-sectional area of the multi port extruded tube in order to facilitate the insertion of the multi port extruded tube into the first opening. In a preferred embodiment, where a guiding sleeve is provided, the first opening might be provided as part of the guiding sleeve. In a preferred embodiment, the interior space of the cap has an end section abutment surface. In a preferred embodiment the end section of the multi port extruded tube abuts against the end section abutment surface. 
     In a preferred embodiment, the multi port extruded tube has an outer circumferential surface. In a preferred embodiment, the sealing seals against the outer circumferential surface, when the cap is in the backward position. In a preferred embodiment the sealing prevents fluid from flowing around the outside of the circumferential surface towards the first opening. 
     In a preferred embodiment, the multi port extruded tube has an outer circumferential surface and the cap has an outer circumferential area. In a preferred embodiment, the outer circumferential area of the multi port extruded tube extends in parallel to the outer circumferential area of the cap. 
     In a preferred embodiment, a sleeve that sits on the multi port extruded tube is provided, whereby the sleeve is at least partially, preferably completely arranged inside the guiding sleeve. In a preferred embodiment, the sleeve has an abutment wall that extends away from the circumferential surface of the multi port extruded tube in a preferred embodiment. The connector has a recess that receives the abutment wall of the sleeve. In a preferred embodiment, the arrangement of the abutment wall in the recess of the connector is an indication to the worker that the multi port extruded tube has been fully inserted into the connector. 
     In a preferred embodiment, the multi port extruded tube has a cross section in a plane perpendicular to the insertion direction in which the extent of the multi port extruded tube in this cross-section in one direction is larger than in a direction perpendicular to the one direction. In a preferred embodiment, the multi port extruded tube has an extend into a first direction that is larger than the extent into a second direction, whereby by the second direction is perpendicular to the first direction and whereby the first direction and the second direction are perpendicular to the longitudinal extent of the multi port extruded tube. In a preferred embodiment, the extent of the multi port extruded tube in the first direction is at least double the extent in the second direction, more preferably more than five times the extent in the second direction, more preferably more than 10 times the extent into the second direction. 
     In the method according to the invention for producing the assembly according to the invention,
         a connector according to the invention is provided with the cap arranged inside the socket and arranged in the forward position   a multi port extruded tube is provided, an end section of the multi port extruded tube is inserted into the socket such that the interior space of the cap receives a part of the end section of a multi port extruded tube, and   the end section of the multi port extruded tube is further extended into the socket, whereby the multi port extruded tube pushes the cap from the forward position towards the backward position.       

     In an alternative method according to the invention for producing the assembly according to the invention,
         a connector according to the invention is provided with the cap that is a plate arranged inside the socket and arranged in the forward position   a multi port extruded tube is provided,   an end section of the multi port extruded tube is inserted into the socket such that the end of the end section of the multi port extruded tube contacts the cap that is a plate, and   the end section of the multi port extruded tube is further extended into the socket, whereby the multi port extruded tube pushes the cap from the forward position towards the backward position.       

     In an alternative method according to the invention for producing the assembly according to the invention,
         a connector according to the invention is provided with the cap not having been inserted in the socket, but the sealing being arranged in the socket,   a multi port extruded tube is provided,   a part of the end section of the multi port extruded tube is into the interior space of the cap,   the end section of the multi port and the cap sitting on the part of the end section that has been introduced into the interior space of the cap is inserted into the socket,   the end section of the multi port and the cap sitting on the part of the end section that has been introduced into the interior space of the cap is further inserted into the socket such that the cap passes through the forward position and is moved from the forward position towards the backward position.       

     In an alternative method according to the invention for producing the assembly according to the invention,
         a connector according to the invention is provided with the cap not having been inserted in the socket, but the sealing being arranged in the socket,   a multi port extruded tube is provided,   the end of the end section of the multi port extruded tube is placed against the cap that is a plate, the end section of the multi port and the cap at the end of the end section of the multi port extruded tube is inserted into the socket,   the end section of the multi port and the cap at the end of the end section of the multi port extruded tube is further inserted into the socket such that the cap passes through the forward position and is moved from the forward position towards the backward position.       

     In a preferred embodiment, the connector is used in a vehicle. The connector can be used as part of a system for the thermal management of batteries. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the following the invention will be described with reference to exemplary embodiments on the figures, where: 
         FIG.  1   : shows a schematic perspective view of a multi port extruded tube; 
         FIG.  2   : shows a first assembly of a connector according to the invention and a multi port extruded tube in a cut schematic perspective view with the connector being in its delivery state and the multi port extruded tube not having been inserted into the connector yet; 
         FIG.  3   : shows the assembly according to  FIG.  2    in a cut schematic perspective view with the multi port extruded tube having been partially inserted into the connector until a part of the end section of the multi port extruded tube has been inserted into the interior space of the cap, whereby the cap is in its initial position; 
         FIG.  4   : shows the assembly according to  FIGS.  2  and  3    in a cut schematic perspective view with the multi port extruded tube having been further inserted into the connector than in the position shown in  FIG.  2   , whereby the cap has reached the forward position; 
         FIG.  5   : shows the assembly according to  FIGS.  2 ,  3  and  4    in a cut perspective schematic view with the multi port extruded tube having been fully inserted into the connector and the cap being in the backward position; 
         FIG.  6   : shows a multi port extruded tube in a schematic perspective view with a sleeve that sits on the multi port extruded tube and a cap on the end of the end section of the multi port extruded tube; 
         FIG.  7   : shows a second assembly of a connector according to the invention and the multi port extruded tube of  FIG.  6    in a schematic perspective view with the cap being arranged outside the connector housing and the multi port extruded tube not having been inserted into the connector yet; 
         FIG.  8   : shows the assembly according to  FIG.  7    in a cut schematic perspective view with the multi port extruded tube having been partially inserted into the connector; 
         FIG.  9   : shows the assembly according to  FIG.  8    in a cut schematic perspective view with the multi port extruded tube having been further inserted into the connector; 
         FIG.  10   : shows the assembly according to  FIGS.  7 ,  8  and  9    in a cut schematic perspective view with the multi port extruded tube having been further inserted into the connector than in the position shown in  FIG.  9   , whereby the cap has reached the forward position; 
         FIG.  11   : shows the assembly according to  FIGS.  7 ,  8 ,  9  and  10    in a cut perspective schematic view with the multi port extruded tube having been fully inserted into the connector and the cap being in the backward position; 
         FIG.  12   : shows a schematic side view of a further embodiment of a multi port extruded tube with a cap designed as a plate set onto the end of the multi port extruded tube; 
         FIG.  13   : shows the multi port extruded tube of  FIG.  12    in a schematic perspective view with the cap designed as a plate being slightly set off from the multi port extruded tube; 
         FIG.  14   : shows a schematic perspective view of a sealing that can be used as part of the assembly; 
         FIG.  15   : shows a schematic view of the sealing of  FIG.  14    set onto a multi port extruded tube; 
         FIG.  16   : shows a third assembly of a connector according to the invention and a multi port extruded tube in a cut schematic perspective view with the connector being in its delivery state and the multi port extruded tube not having been inserted into the connector yet; 
         FIG.  17   : shows the assembly according to  FIG.  16    in a cut schematic perspective view with the multi port extruded tube having been partially inserted into the connector until a end surface of the multi port extruded tube rests against a rear surface of the cap, whereby the cap is in its initial position; 
         FIG.  18   : shows a part of the assembly according to  FIGS.  16  and  17    in a cut schematic perspective view with the multi port extruded tube having been further inserted into the connector than in the position shown in  FIG.  17   , whereby the cap has reached the forward position; and 
         FIG.  19   : shows the assembly according to  FIGS.  16 ,  17  and  18    in a cut perspective schematic view with the multi port extruded tube having been fully inserted into the connector and the cap being in the backward position. 
     
    
    
     DETAILED DESCRIPTION 
       FIGS.  1 ,  6 ,  12 ,  13    show multi port extruded tubes  1 . The connector  20  according to the invention is used to be connected to such a multi port extruded tube  1 . Such a multi port extruded tube  1  forms part of the assembly according to the invention. 
     The multi port extruded tube  1  has a multitude of channels  2 . The channels  2  have an longitudinal extent. The channels  2  run in parallel to each other. The longitudinal extent of each channel is in parallel to the longitudinal extent A of the multi port extruded tube  1 . Each channel  2  terminates in a port  3  at an end for the multi port extruded tube  1  The section of the multi port extruded tube  1  that terminates in the end  4  is referred to as the end section  5  of the multi port extruded tube  1 . The extent of the end section  5  in the longitudinal direction A of the multi port extruded tube  1  depends on the design of the connector. The end section  5  is that part of the multi port extruded tube  1  that is fully received by the connector. 
     The multi port extruded tube  1 , that can be used as part of the assembly according to the invention, is not limited to the lengths in the longitudinal direction A that is shown in  FIG.  1   . The multi port extruded tube  1  that can be used as part of the assembly according to the invention can be substantially longer than shown in  FIG.  1   . 
     The multi port extruded tube  1  according to the invention can be made by cutting off sections from a long extruded profile. The cutting surface will be the surface that surrounds the ports  3 . It is known that the cutting process can lead to the end surface of the multi port extruded tube being of a rough shape and/or sharp shape, which can lead to damages on sealings  33 , if the end  4  of the multi port extruded tube  1  comes into contact with these sealings  33 . The cutting process can also sometimes lead to chips or splints of material extending away from the end surface in directions at an angle to the longitudinal direction A. 
     The multi port extruded tube  1  has an outer circumferential surface  6 . The outer circumferential surface  6  is made up of several partial surfaces. In the embodiment shown in  FIG.  1   , the outer circumferential surface  6  is made up of a first plane rectangular partial surface  7  and a second plane rectangular partial surface  8  that is arranged in parallel to the partial surface  7 . To complete the outer circumferential surface  6  of the multi port extruded tube  1  bend partial surfaces  9 , 10  that have the shape of a part of the outer circumferential surface of a cylinder are provided. These partial surfaces  9  and  10  join the partial services  7  and  8  at opposite ends. 
     In the embodiment of the assembly according to the invention as shown in  FIGS.  2  to  5  and  7  to  11    the connector  20  according to the invention has a socket  21  that is suitable for an end section  5  of a multi port extruded tube  1  to be inserted into it along a linear insertion direction B. The socket  21  contains an end section receiving space  22  that is a suitable to receive the end section  5  of a multi port extruded tube  1 . The end section receiving space  22  boarders a first opening  23  that is suitable for a multi port extruded tube  1  to extend through it. 
     In the embodiment of the invention shown in  FIGS.  2  to  5   , a cap  24  is arranged inside the socket  21  already in the delivery state of the connector  20  (initial position of the cap  24  (see  FIG.  2   )), such that the cap  24  can slide from a forward position (shown in  FIG.  4   ) that is closer to the first opening  23  to a backward position (shown in  FIG.  5   ) that is further away from the first opening  23 . The cap  24  has an interior space  25  that is suitable to receive a part of the end section  5  of a multi port extruded tube  1  (see  FIG.  3 ,  4 ,  5   ) that is inserted into the end section receiving space  22 . In the embodiment of the invention shown in  FIGS.  7  to  11   , the cap  24  is arranged outside the socket  21  in the delivery state of the connector  20  (see  FIG.  7   ; initial position of the cap  24 ). The cap  24  will be placed onto the end  4  of the multi port extruded tube  1  outside of the socket  21  (see  FIG.  7   ) and will be introduced into the socket  21  as the end  4  of the multi-port extruded tube is inserted into the socket  21 . The cap  24  than slides along guide surface  42  in a guiding sleeve  40  (see  FIG.  8   ) until the cap  24  reaches the forward position (shown in  FIG.  10   ) that is closer to the first opening  23  to a backward position (shown in  FIG.  11   ) that is further away from the first opening  23 . The cap  24  has an interior space  25  that is suitable to receive a part of the end section  5  of a multi port extruded tube  1  (see  FIG.  3 ,  4 ,  5 ,  8 ,  9 ,  10 ,  11   ) that is inserted into the end section receiving space  22 . 
     The cap  24  has an outer circumferential surface  26 . The outer circumferential surface of the cap  26  can best seen in  FIG.  6 ,  13   .  FIG.  6    shows a second embodiment of the assembly according to the invention and  FIG.  13    shows a third embodiment of the assembly according to the invention. However, the cap  24  shown in  FIG.  6 ,  13    can also be used as cap  24  in the embodiment shown in the  FIGS.  2  to  5    (as regards the cap shown in  FIG.  13    also see  FIGS.  16 - 19   ). The outer circumferential surface  26  of the cap  4  is made up of several partial surfaces. In the embodiment shown in  FIG.  6   , the outer circumferential surface  26  is made up of a first plane rectangular partial surface  27  and a second plane rectangular partial surface  28  that is arranged in parallel to the partial surface  27 . To complete the outer circumferential surface  26  of the cap  24  bend partial surfaces  29 ,  30  that have the shape of a part of the outer circumferential surface of a cylinder are provided. These partial surfaces  29  and  30  join the partial surfaces  27  and  28  at opposite ends. As can be seen from  FIG.  6 ,  13   , the outer circumferential surface  6  of the multi port extruded tube  1  is parallel to the outer circumferential surface  26  of the cap  24 . The shape of the cross section of the cap  24  as defined by the outer circumferential surface  26  in a plane perpendicular to the longitudinal extent A/the linear insertion direction B is of the same shape as the cross section of the multi port extruded tube  1  as defined by the outer circumferential surface  6  in a plane perpendicular to the longitudinal extent A. 
       FIG.  6    shows that the cap  24  has a large fluid opening  36 . The fluid opening  36  connects the interior space  25  with the outside of the cap  24 . The cap  24  is stabilized by bars  32  that cross the fluid opening  36  and stabilize the part of the cap  24  that has the partial surface  27  against the part of the cap  24  that has the partial surface  28 . 
     The cap  24  shown in  FIG.  13    has protrusions  60  that can be inserted through the ports  3  into the channels  2  to hold the cap  24  designed as a plate to the multi port tube. The cap  24  shown in  FIG.  13    in further embodiments can have more than two protrusions  60  to hold the cap  24  designed as a plate to the multi port tube. In the embodiment shown in  FIG.  13   , the cap  24  is designed as a plate and has a rear surface that faces towards the end surface of the multi port extruded tube. In the view shown in  FIG.  12   , this rear surface of the cap  24  rests against the end surface of the multi port extruded tube. 
     According to the invention a sealing  33  is provided (see  FIG.  14   ,  FIG.  15   ). The sealing  33  is made up of a basic body  34 , that has a rectangular cross-section, and a lip  35  that extends away from the basic body  34 . The sealing  33  is arranged inside the socket  21 . The lip  35  of the sealing  33  contacts the outer circumferential surface  26  of the cap  24 , when the cap  24  is in the forward position (see  FIG.  4 ,  10 ,  18   ). The sealing  33  is in a compressed state, when the cap  24  is in the forward position (see  FIG.  4 ,  10 ,  18   ). The sealing  33  is in a compressed state, because the lip  35  has been displaced by the cap  24  radially outward (compare  FIG.  3    to  FIG.  4    and compare  FIGS.  9  to  10   , compare  FIGS.  16  to  18   ). The tip of the lip  35  and hence a part of the sealing  33  expands into a space that was occupied by a part of the cap  24  when the cap  24  was in the forward position (see  FIG.  4 ,  10 ,  18   ) and is given free when the cap  24  slides from the forward position (see  FIG.  4 ,  10 ,  18   ) into the backward position (see  FIG.  5 ,  11 ,  19   ). The tip of the lip  33  still does not return to its normal state shown in  FIG.  3   , because the tip of the lip  33  rests against the outer circumferential surface  6  of the multiport extruded tube  1  (see  FIG.  15   ). The restoring force that wants to push the lip  33  back into its normal state (see  FIG.  3 ,  9 ,  17   ) and that is still present in the state shown in  FIG.  5   , because the lip  33  has not been able to return to its normal state (see  FIG.  3 ,  9 ,  17   ) but rests against the outer circumferential surface  6  of the multiport extruded tube  1  provides a sealing force that presses the lip  33  against the outer circumferential surface  6  of the multiport extruded tube  1 . The view of  FIG.  15    is provided simply to show, how the lip  35  of the sealing  33  is still displaced, when it rests against the outer circumferential surface  6  of the multiport extruded tube  1 . As can be seen from  FIGS.  14  and  15    the specific shape of the sealing  33  is much better suited to accommodate the specific shape of a multi port extruded tube than would be the case with an O-ring. 
     As can be seen from the succession of  FIG.  2 ,  3 ,  4 ,  5   , and the succession of  FIG.  7 ,  8 ,  9 ,  10 ,  11    because the cap has an interior space  25  that takes up a part of the end section  5  of the multi port extruded tube  1 , namely the part of the end section  5  that is closest to the end  4  of the multiport extruded tube  1 , the cap  24  diffuses any rough and/or sharp edges that the end  4  the multiport extruded tube  1  might have. These rough and/or sharp edges are simply taken up by the cap  24 . It is the cap  24  that comes into contact with the sealing  33  and not the possibly rough and/or sharp end  4  of the multiport extruded tube  1 . The cap  24  hence guides the end  4  of the multiport extruded tube  1  past the sealing  33  without the possibly rough and/or sharp end  4  of the multiport extruded tube  1  being able to come into contact with the sealing  33  and without the possibly rough and/or sharp end  4  of the multiport extruded tube  1  being able to damage the sealing  33 . 
     As can best be seen from  FIGS.  2  and  6   , the cap  24  has one longitudinal fluid opening  36 . The longitudinal fluid opening  36  is interrupted by bars  32 . These bars  32  add stability to the cap  24  and prevent the partial surface  27  being pushed against the partial surface  28 . The barriers  32  can also be arranged to resemble the sidewalls of the channels  2  of the multi port extruded tube  1  (see  FIG.  1   ); but it also feasible that less bars  32  are present than the multi port extruded tube  1  has sidewalls of channels  2 . 
       FIGS.  16  to  19    show an embodiment of the assembly, where the cap  24  is designed like a plate and designed for a rear surface of the cap  24  to rest against an end surface of the multi port extruded tube  1 .  FIG.  16    shows a similar assembly stage to  FIG.  2   ;  FIG.  17    shows a similar assembly stage to  FIG.  3   ;  FIG.  18    shows a similar assembly stage to  FIG.  4   ;  FIG.  19    shows a similar assembly stage to  FIG.  5   . For the detailed description reference is hence made to the detailed description of  FIGS.  2  to  5   . The difference between the embodiment of  FIGS.  2  to  5    to the one shown in  FIGS.  16  to  19    simply is in the design of the cap  24 . In the design of  FIGS.  2  to  5   , the cap  24  is designed to have the interior space  25  that takes up a part of the end section  5  of the multi port extruded tube  1 , namely the part of the end section  5  that is closest to the end  4  of the multiport extruded tube  1 . In the design of  FIGS.  16  to  19   , the cap  24  has not interior space that is provided to take up a part of the end section  5  of the multi port extruded tube  1 , namely the part of the end section  5  that is closest to the end  4  of the multiport extruded tube  1 . In the design of  FIGS.  16  to  19   , the cap  24  simply rests with its rear surface against an end surface of the multi port extruded tube  1 . It is to be expected that already this placement of the plate-like cap  24  against the possibly sharp or rough end surface substantially reduces damage to the sealing  33 . 
     A fluid that flows along the channels  2  of the multiport extruded tube  1  flows out of the ports  3  and into the fluid opening  36  of the cap  24 . Depending on the design of the outer circumferential surface  6  and the walls that delimit the interior space  25  of the cap  24  and depending on the pressure of the fluid, a part of the fluid might pass inbetween the outer circumferential area  6  of the multiport extruded tube  1  and the surfaces that delimit the interior space  25  of the cap  24  and tries to flow backwards towards the opening  23 . As shown in  FIGS.  5  and  11    the arrangement of the sealing  33  however prevents any such fluid from reaching the opening  23 . 
     The socket  21  has a recess  37 . The recess  37  is made up by a step  38  in the socket  21  and an end surface  39  of a guiding sleeve  40  that is arranged inside the socket  21 . A part of the sealing  33 , namely the basic body  34  of the sealing  33  is arranged inside the recess  37 . In the design shown in the Fig., this is the case for all positions of the cap  24 . However designs are feasible, for example where an O-ring is used as sealing  33 , where the sealing  33  would be more inside the recess  37 , when the cap  24  is in the forward position, than in positions, where the cap  24  is not in the forward position. In such designs, the sealing  33  would expand into the space that has been given free when the cap  24  slides from the forward position into the backward position. In the design shown in the Fig. it is however only the lip  35  that is displaced by the cap  24 , when the cap  24  is in the forward position ( FIG.  4 ,  10   ). It is the lip  35  that then expands into the space that was previously occupied by a part of the cap  24 . 
     The socket  21  has a cap abutment surface  41 . The cap  24  abuts against the cap abutment surface  24  in the backward position (see  FIG.  5 ,  11   ). 
     A guiding sleeve  40  is arranged at least in part in the socket  21 . The guiding sleeve  40  has guide surfaces  42  that partially delimit the end section receiving space  22 . The guide sleeve  40  is made as a separate element to a connector housing  43 . The sleeve  40  has a clip (not shown) that engages into a recess  44  in the connector housing  43 . The engagement of the clip of the guide sleeve  40  in the recess  44  of the connector housing  43  fixedly attaches the guide sleeve  40  to the connector housing  43  and keeps the guide sleeve  40  in a predefined position inside the socket  21 . The guide sleeve  40  has an end wall  39  that is used to partially delimit the recess  37 . Additionally, the end of the guide sleeve  40  has an inner wall  45 . The inner wall  45  can be used to create a pocket inside the recess  37 . The pocket can be used to take up the basic part  34  of the sealing  33 . The guide sleeve  40  being a separate element from the connector housing  43  makes the assembly of the connector  20  more easy. When assembling the connector  20  the sealing  33  can be arranged on the inner wall  45  and the cap can be arranged inside the guide sleeve  40 , abutting against a cap abutment surface  47  of the guide sleeve  40 . Thus preassembled three parts (guide sleeve  40 , sealing  33 , cap  24 ) can be jointly inserted into the socket  21  of the connector housing  43 . The guide sleeve  40  is pushed into the socket  21  until the clip (not shown) enters into the recess  44 . 
     The connector housing  43  has channel  47 . An end opening  48  of the socket  21  leads from the end section receiving space  22  (approximately from the cap abutment surface  41 ) to the channel  43 . A channel opening  49  is provided as part of the housing  43 . 
     The multi port extruded tube  1  shown in  FIG.  6    is provided with a sleeve  31 . This sleeve  31  takes up a further guiding function. As can be seen from  FIG.  7   , the guide surfaces  42  of the guiding sleeve  40  in the design shown in  FIGS.  7  to  11    are small end surfaces  50  of support walls  51 . The sleeve  31  is designed such that its outer circumferential surface  56  comes into contact with the end surfaces  50  and is supported and guided by the end surfaces  50 . By this guidance, the sleeve  31  can also guide the insertion of the multi port extruded tube  1  into the socket  21  of the connector  20 . 
     The sleeve  31  has an abutment wall  52 . The abutment wall engages against the forward pointing surfaces  53  of the support walls  51  (see  FIG.  9 ,  10 ,  11   ). The sleeve  31  remains in this position ( FIG.  9 ,  10 ,  11   ) and the multi port extruded tube  1  moves relative to the sleeve  31  (compare  FIG.  6 , 7 , 8 ,  9    to  FIGS.  10  and  11   ). The sleeve  31  hence can stabilize the multi port extruded tube  1  in the regain of the first opening  23 . 
     The interior space  25  of the cap  24  has an end section abutment surface  54 . The end section  5  of the multi port extruded tube  1  abuts against the end section abutment surface  54 . 
     The terms “comprising” or “comprise” are used herein in their broadest sense to mean and encompass the notions of “including,” “include,” “consist(ing) essentially of,” and “consist(ing) of. The use of “for example,” “e.g.,” “such as,” and “including” to list illustrative examples does not limit to only the listed examples. Thus, “for example” or “such as” means “for example, but not limited to” or “such as, but not limited to” and encompasses other similar or equivalent examples. The term “about” as used herein serves to reasonably encompass or describe minor variations in numerical values measured by instrumental analysis or as a result of sample handling. Such minor variations may be in the order of ±0-25, ±0-10, ±0-5, or ±0-2.5, % of the numerical values. Further, The term “about” applies to both numerical values when associated with a range of values. Moreover, the term “about” may apply to numerical values even when not explicitly stated. 
     Generally, as used herein a hyphen “-” or dash “—” in a range of values is “to” or “through”; a “&gt;” is “above” or “greater-than”; a “≥” is “at least” or “greater-than or equal to”; a “&lt;” is “below” or “less-than”; and a “≤” is “at most” or “less-than or equal to.” On an individual basis, each of the aforementioned applications for patent, patents, and/or patent application publications, is expressly incorporated herein by reference in its entirety in one or more non-limiting embodiments. 
     It is to be understood that the appended claims are not limited to express and particular compounds, compositions, or methods described in the detailed description, which may vary between particular embodiments which fall within the scope of the appended claims. With respect to any Markush groups relied upon herein for describing particular features or aspects of various embodiments, it is to be appreciated that different, special, and/or unexpected results may be obtained from each member of the respective Markush group independent from all other Markush members. Each member of a Markush group may be relied upon individually and or in combination and provides adequate support for specific embodiments within the scope of the appended claims. 
     The present invention has been described herein in an illustrative manner, and it is to be understood that the terminology which has been used is intended to be in the nature of words of description rather than of limitation. Many modifications and variations of the present invention are possible in light of the above teachings. The present invention may be practiced otherwise than as specifically described within the scope of the appended claims. The subject matter of all combinations of independent and dependent claims, both single and multiple dependent, is herein expressly contemplated.