DE3122212C2 - Hose with branch hose attached to the side - Google Patents

Abstract

To produce hose lines with branches, for example for the cooling system on motor vehicle engines, it is common to use the usually smaller branch hose in the vulcanizable raw state in an opening of the hose and at the same time to connect to the ready-made vulcanizing adhesive with this. According to the present invention, the branch hose is inserted into an undersized and plastically-elastically widened opening and rolled around like a flange within the conduit hose. This ensures that the reinforcement inserts of both hoses are covered, which is favorable for the transfer of forces, while, on the other hand, the inserts are effectively protected from the ingress of liquid and subsequent corrosion damage.

Description

Mistake. At least the branch hose 3 is located in the still vulcanizable before assembly State. Its connection end 23 is as shown in FIG. 1 flange-like with two folds rolled over

To establish the connection, an opening approximately 40 to 50% smaller than the outer diameter of the branch hose 3 is punched into the wall of the main hose 4. The branch hose is expediently already pulled onto a rigid mandrel 5, which can be screwed to a mandrel 6 that carries the main hose 4 in the further course of the construction work. Due to the original undersizing of the receiving opening, the inevitable damage to the reinforcement inserts 14 with the punching is kept within narrow limits, and at the same time this results in the possibility of bulging the wall of the main hose 4 around the branch hose 3 in close adaptation to these outwards, so that the inner circumference in the area of the opening can be shaped smoothly according to the contours of the inserted dome 6. In the final state, the reinforcement inserts 13, 14 of the two hoses overlap one another, as is illustrated in FIG

The connection point prepared in this way can then be vulcanized in a mold in a manner known per se be, at the same time the continuous material connection between the abutting Hoses 3.4 is produced.

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Claims (2)

1 2 the branch hose provided with two opposing breakthroughs, expanding onto the branch hose provided with a simple breakthrough 1. Made of rubber or rubber-like plastics, the main hose should be pushed on and the connection textile reinforcement inserts produced 5 manure after supplying additional raw rubbers in one Flexible hose with a special shape attached to the side to vulcanize. and connected by cross-linking, also from The invention is on the other hand as an object to rubber or rubber-like plastics with text bases, with a new design and arrangement Reinforcement inserts made flexible connection of the connection point the production of tissue-branch hose, io tiger pressure-resistant hose branches with network, that this to enable the formation of a flange-like, equally low amount of work, two-day bead rolled-over connection end (23) To solve this task, the one.-des hoses provided in an opening of the hose wall (4) according to the invention of the type described at the outset, put the branch hose (3) over the entire surface of the In- that the formation of a flange-like two-day inner jacket of the hose wall rests 13 bead rolled over connecting end of the into an opening 2. Hose according to claim 1, characterized in that the hose wall used is the branch hose shows that the connecting end (23) of the branch hose over the entire surface on the inner jacket of the hose wall (3) covering hose wall, with the connection end of the cover being expedient The branch hose, which covers the hose wall, bulges outwards 20 is bulged on the outside With your »insertion«, which is to be understood in terms of value - Compared to an otherwise usual mere "attachment" - of the branch hose into the interior of the The invention relates to tubing made of rubber or rubber in and the immediate application Similar plastics with textile reinforcements 25 of the rolled connecting ends from the inside to the Layers of flexible hoses with a side wall will prevent the ingress of liquid attached and connected by networking, th into the reinforcement inserts of the two hoses also made of rubber or rubber-like plastic - definitely avoided. The invention creates one fen with textile reinforcement inserts produced, as it were, form-fitting connection in which the pliable Branch hose. 30 reinforcement layers of both hoses in the For example, cover the cooling system of the drive motor so that the static pressure of the tors in motor vehicles, especially in connection with conducted liquids or gases, rather still compress- the interior heating, but also acts as a separator for other purposes There are various hose lines with independent of the pressure conditions under all of them coherent branches required during 35 circumstances completely preserved For the first time, or for a trial run, hose branches stand out in the a hose branch the use of metallic use due to a particularly high stress angular pipe sections are also used for greater capacity and long-term stability against Series of similar piping systems that cause the hoses to exert internal pressures. from the outset with the attached branch 40 To create the hose branches, the hoses produced as uniform molded parts, as there is hose with an opening of compared to the in this case from the elimination of complex assembly branch hose with a significantly smaller clear width work, more favorable flow guidance and avoidance, these under plastic-elastic deformation There is a considerable benefit to prevent later corrosion damage and then the branch hose is inserted result. However, this requires training and 45 sets and the hose wall from the outside on it the production of the connection connection special re-shaped connection end pressed on the material connection care, A closed force transition between the connection is then established by the disconnection the reinforcement inserts of the abutting branch hose in the still uncrosslinked state of the load Ensure tubing. stomer material inserted into the opening and According to a known proposal (DE-AS 24 43 824) 50 then adhering simultaneously with the crosslinking is used to create T-shaped hose branches and is connected to the hose wall, gen the edge of the in the wall of the main hose The invention is not only for the production of a single introduced opening flanged to the outside and zig, but any number of branches at one and the connection end of the same hose line, which is also flanged, can be used. She is based branch hose in an overlapping connection on the 55 of the schematic representation of an exemplary embodiment put on. In order to provide the necessary fixation, it is shown in the drawing. In the drawing It is essential to have a funnel-shaped volcano nized hose piece as an additional reinforcing Fig. 1 the prepared connection end piece of an AbMaterial under the beaded edge of the wall opening branch hose in partial section and
to glue. 60 F i g. 2 a branch piece of a hose line According to another known method (DE-OS in the manufacturing state in longitudinal section.
22 30 719), the branch hose is connected directly to the roughened hole edges of the main hose by inserting a branch hose 3 and, after building up additional raw rubber dimensions, an equally small clear width into an opening in terials while vulcanizing at the same time connected to this 65 of the wall of a continuous main hose 4. The reinforcement layers of the hoses are formed. Both hoses 3, 4 are made, for. B. from one are not related to each other. heat-resistant synthetic rubber and are It has also been proposed (DE-OS 30 30 134), embedded reinforcement inserts 13, 14 made of textile fibers