DE8008838U1 - HOSE CONNECTOR - Google Patents

Description

The innovation concerns a hose connector with an integrally formed Pipe sockets and union sleeves existing push-in connections for plastic hoses, especially for hydraulic and pneumatic control lines.

A hose connector of this type is known in which the pipe socket has an outer conical annular bead and the union sleeve has a stepped inner diameter with an inclined transition section and expansion slots (GM 78 06 651).

This hose connector has the disadvantage that the hose is greatly expanded in a narrowly limited area, which leads to permanent deformation and damage to the hose over a longer period of time. Besides, the The connection is difficult to detach, which means that the hoses can be exchanged or reconnected in the tightly confined space of a control cabinet difficult and time consuming.

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i There is also a pipe union for plastic pipes bej knows, in which a wedge ring with sloping I outer cones of different diameters on both sides on the pipe end

j raised, inserted into a receptacle of the connecting piece and is screwed with a union sleeve.

¹ (GM 78 32 198). In this case, the wedge ring has slots, whereby the pipe is strongly narrowed when screwing, also in a short area, whereby the same after-

parts, as in the case of the first-mentioned hose connector. the However, the connection is easier to loosen than that of the first-mentioned hose connector. jji

The task of the innovation is to create a hose connector in which the hoses to be connected expand gradually takes place over a greater length and does not exceed about 20%, or is not necessary at all.

According to the innovation, this is achieved in that the pipe socket at its base at a distance of approximately the hose thickness of a ring with an external thread is surrounded, which has an internal cone and the union sleeve with a with the external thread cooperating internal thread and an inner ring concentric to this is formed, the outer diameter of which is smaller than is the mouth of the inner cone of the ring surrounding the pipe socket.

According to the preferred embodiment of the innovation, the pipe socket is designed with a steep outer cone, whereby its : The inside diameter roughly corresponds to the inside diameter of the hose. The wall thickness of the pipe socket is about 1/6 of its inner diameter and the outer cone of the pipe socket

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is preferably inclined about 5 ° to its longitudinal axis.

The inner cone of the ring expediently encloses an angle of approximately 12 ° with its axis and the wall thickness of the inner ring is smaller than or equal to that of the pipe socket.

The innovation is explained in more detail with reference to the drawing. This shows a connection piece of the innovation according to the invention Hose connector in view and in the Schmitt.

A connecting piece 2 is formed on the body of the hose connector 1 and is inserted into a pipe socket 3 at its outer end and a ring 4 passes over. The pipe socket 3 has a steep outer cone 5 which is inclined about 5 ° to its longitudinal axis. The wall thickness of the pipe socket 3 is about 1/6 of its inner diameter, which is approximately the inner diameter of the connected Tube 6 corresponds.

The ring 4 has an external thread 7 which extends on the surface of the connecting piece 2 continues. The ring 4 is at such a distance from the pipe socket 3 that the hose 6 is comfortable can be inserted into the annular gap 8 formed in this way, with of course possible tolerances of the hose thickness are taken into account. The ring 4 has an inner cone 9 which is less steep than the outer cone 5 of the pipe socket 3 and preferably an angle of about 12 ° -15 ° with its axis. includes.

The hose connector also has a union socket 10, with a through, central opening 11, an internal thread 12 and a central inner ring 13, the outer diameter of which

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smaller than the mouth of the inner cone 9 of the pipe socket 3 surrounding ring 4 is. The wall thickness of the inner ring 13 is smaller than that of the pipe socket 3 or at most this same.

After slipping over the coupling sleeve 10 over the end of the hose 6, this is pushed onto the pipe socket 3, the hose being stretched by less than 20%. When unscrewing the sleeve 10, the inner ring 13 slides on the hose 6 and on the inner cone 9, whereby it is bent inward through this and clamps the hose 6. To loosen the connection, after unscrewing the union sleeve 10, the hose 6 can be easily pulled off the pipe socket 3.

ι In one embodiment with a pipe socket without an outer cone 5, i.e. with a cylindrical pipe socket of constant wall thickness, (not shown) an expansion of the hose

¹ end can be completely dispensed with, since the union sleeve 10! Can be screwed on as tightly as desired and thus a sufficiently strong friction between the hose 6 and the outer surface of the pipe socket 3 can be generated. The disadvantage of such an embodiment is that the inside diameter of the hose 6 is reduced by the wall thickness of the pipe socket 3. It will therefore depend on the respective requirements for the connection to be established whether one or the other of the embodiments is selected.

Claims (1)

Protection claims Hose connector with plug-in connections for plastic consisting of molded pipe sockets and union sleeves Hoses, in particular for hydraulic and pneumatic control lines, characterized in that the Pipe socket (3) at its base at a distance of approximately the hose thickness of a ring (4) with an external thread (7) is surrounded, which has an inner cone (9) and the union sleeve (10) with a cooperating with the external thread Internal thread (12) and an inner ring (13) concentric to this is formed, the Outside diameter smaller than the mouth of the inner cone (1) of the ring (4) surrounding the pipe socket (3) is. Hose connector according to Claim 1, characterized in that the pipe socket (3) has a steep outer cone (5) is trained. * t β β V f Hose connector according to claim 2, characterized in that that the wall thickness of the pipe socket (3) is about 1/6 of its inner diameter. Hose connector according to Claim 2 or 3, characterized in that the outer cone (5) of the pipe socket (3) is inclined approximately 5 ° to its longitudinal axis. Hose connector according to claims 1-4, characterized in that the inner cone (9) of the ring (4) with its axis encloses an angle of about 12 ° to 15 °. Hose connector according to claims 1-5, characterized in that that the wall thickness of the Irmenring (13) is less than or equal to that of the pipe socket (3).