SK8164Y1 - Hose end, particularly as connecting element - Google Patents

Abstract

The end piece has a body (3) and a socket (1) connected to the body (3). The socket (1) is movable mounted against the body (3), adapted to push the end of the hose and has a thickening (2). The hose end has a circumferential stopper (4) in the socket (1) axis, the stopper (4) having an inner contact surface which is oriented inwardly to the socket (1) against the thickening (2). The difference in the diameter of the stopper (4) and the diameter of the thickening (2) is less than twice the thickness of the hose wall. The socket (1) may be sealed against the end of body (3) by a sealing ring (7) or may be connected to the body (3) by means of a flexible corrugated waveguide. When the socket (1) is moved outward, the contact surface of the stopper (4) and the outer surface of the hose in the zone of thickening (2) approach and the hose is retained on the socket (1) by the pressure between the contact surface of the stopper (4) and the thickening (2). The increasing pressure in the hose increases the pressure of the hose on the socket (1), thereby increasing the sealing effect of the connection.

Description

Technical field

The technical solution concerns a hose end or a flexible pipe. The terminal is primarily intended to form a joint between the end of the hose and the other element, it may be part of the connecting element, end cap, flange joint and the like.

BACKGROUND OF THE INVENTION

Various technical solutions are used to connect the end of a flexible hose to a rigid connector in which the hose is pushed onto the sleeve where it is held by various mechanical couplers. For example, hose clamps, metal cable ties to clamp the hose onto the sleeve are common.

There are also solutions with an outer sleeve that has a conical surface and, when screwing, presses the segments distributed around the periphery of the end piece so that these segments press the end of the hose to the sleeve. Such a solution is relatively simple, but is not reliable enough, at high pressure, holding the hose on the sleeve is problematic and small segments are prone to breaking. A similar solution according to JP2016044763A utilizes coarsening on the sleeve onto which the hose is pushed with a screwing sleeve. The solution is relatively complex and the installation of the hose requires screwing.

Published US2012 / 0274064A1 discloses a hose terminal having a rigid sleeve with coarsening at its end and having a sliding sleeve that enters a cavity in the terminal body (particularly Figure 17). When pulling out, the sleeve surrounds the hose on the sleeve. In order to apply sufficient pressure, the sleeve must be pushed outwards and the pressure in the hose acts in a direction that pulls the hose out of the sleeve and at the same time from the connection with the sleeve. A disadvantage is also the separability of the sleeve, which can and may be lost during assembly or later during operation. The sleeve requires relatively precise guidance in the cavity of the terminal body.

It is desired and not known to provide a simple technical solution which will allow a quick fit of the hose to a hose without tools, is reliable in operation and simple to manufacture.

The essence of the technical solution

The drawbacks of the prior art are substantially eliminated by the hose end piece, particularly as a connecting element, wherein the end piece comprises a body and a sleeve interconnected with the body, the sleeve is adapted to slip the hose end and the sleeve has The solution consists in the fact that the sleeve is displaceably mounted in the opening of the body, the end has a circumferential stop with a hole on the hose in the axis of the sleeve, the stop is connected to the body, the stop has a circumferential contact face. thickening on the sleeve.

The sliding fit allows the sleeve to move in the body opening toward the stop and retract into the terminal body. On the one hand, the end is bounded by a body having a sleeve inserted in the opening, on the other hand, the end is bounded by a stop The stop can be connected to the end body in various ways according to the size and cross-sectional shape of the end. If the terminal has a circular cross-section, it will be advantageous if the stop is formed at the end of the peripheral wall which is a continuation of the terminal body. In such a case, the circumferential wall with the stop creates a cavity within which there is a sleeve, wherein there is a gap between the circumferential wall and the sleeve at least with a dimension of the thickness of the hose wall, thereby allowing the cavity to move the hose along the sleeve. Thus, the cavity is adapted to introduce a hose onto the sleeve within the cavity. In such an arrangement, the stop, the peripheral wall and the terminal body can be formed by a single body, making it easy to design with two separate components.

In another embodiment, the stop may be connected to the terminal body by two or more rods. The connection of the stop to the body must be able to transfer forces from the stop to the body of the terminal. The purpose of the stop is to catch the sleeve as it moves away from the terminal body. Correspondingly, any mechanical connection between the stop and the terminal body, for example a perimeter wall, three ropes, rods or the like.

The difference between the diameter of the contact surface of the stop and the diameter of the roughing is less than twice the wall thickness of the hose. The stop does not allow the nozzle to be pulled out of the cavity when the hose is pushed onto the sleeve. The hose has a diameter that is larger than the inside diameter of the stop at the point where it is threaded to coarse the sleeve.

The term nipple in this specification refers to a pipe, in particular a cylindrical cross section, onto which the end of the hose is threaded. The sleeve may also have another cross-section, for example, elliptical, flattened or rectangular with rounded corners. Thickening of the sleeve represents an increase in the diameter of the pipe at the end thereof, for example, it may have a conical shape as is common with sleeves on which the hose is secured with a tightening tape, where

With the K 8164 Y1 of the tea room, there are several conical coarsely placed in succession, ending in a step reduction in diameter to the diameter of the sleeve. The outer side or outer end is the side or end on the end of the hose. The name hose refers to any piping element regardless of the material composition, it can also be a plastic or rubber piping that allows it to be threaded onto the sleeve with coarsening

An important feature of the present invention is that the sleeve is received in the terminal body so as to allow its partial displacement relative to the terminal body. It will be appreciated that the displacement of the sleeve is limited by stops, a displacement of the order of mm is sufficient.

The end of the hose is inserted inside the fitting where it is guided through the central opening to the end of the sleeve. The end of the sleeve has a diameter that allows the end of the hose to be inserted at least to the start of the sleeve. Further pressure moves the end of the hose through coarsening. During this insertion of the hose, the sleeve is displaced towards the terminal body, where the face of the sleeve rests against the shoulder in the opening of the terminal body. Due to its elasticity, the hose end passes through the coarsening zone and is usually pushed onto the sleeve to the terminal body. The hose is now mounted on the sleeve, but apart from the flexibility of the hose material, the hose has no other source of grip on the sleeve. At any overpressure in the hose, the sleeve is pushed outwards from the terminal body. This displacement causes a condition where the hose is pressed against the stop surface of the stop at the point where it surrounds the thickening on the sleeve. Since by moving the sleeve outwards, the abutment contact surface and the outer surface of the hose in the coarse zone approach and the difference between the diameter of the abutment surface and the coarse diameter is less than twice the wall thickness of the hose. the displacement of the sleeve in the opening of the body should be less than the force sufficient to pull the hose out of the sleeve, but this is simply ensured by the dimension / iririmtia and the length of the sleeve. In this arrangement, the overpressure in the hose causes the sleeve to move up to the stop first, thereby creating a pressure of the sleeve against the sleeve at the point of thickening.

The clamping of the hose between the stop face and the sleeve can, in addition to mechanically holding the hose on the sleeve, also ensure the tightness of the hose against the sleeve or a seal may be inserted between the hose and the sleeve.

The sleeve may be sealed against the terminal body by a sealing ring which is mounted on the sleeve and rests on the inside diameter of the peripheral wall or the opening in the terminal body. At the same time, this sealing ring can act as a stop to move the sleeve out of the body in case the hose is not fitted on the sleeve. After the hose has been fitted, the sleeve cannot be pushed out through the stop zone

The roughing may have different shapes, preferably having a conical shape by which the end of the hose is guided to the sleeve. At the same time, it is also advantageous if the contact surface of the stop on has a conical shape which corresponds to the conical shape / hmbmit on the sleeve. This creates two parallel conical surfaces between which the hose material is clamped. The roughing may be formed by injection molding the sleeve or, in the case of a metal sleeve, the roughing may be formed by forming, rolling the end of the sleeve.

In a preferred embodiment, the terminal body will have a cylindrical shape. On the hose insertion side, the terminal has a central opening preceding the cavity of the terminal. A cylindrical sleeve is disposed in the body axis and is slidably guided in the opening of the terminal body. The aperture is graduated such that the inner face of the sleeve is supported by a shoulder in the opening of the terminal body in a position such that a gap is formed between the sleeve thickening and the contact surface of the stop which corresponds at least to the wall thickness of the hose. When pushing the hose onto the sleeve, there is no significant force acting on the contact surface of the stop and the outer surface of the hose, which could prevent the hose from slipping onto the sleeve. The cavity in the terminal body has a dimension and shape that allows the flexible end of the hose to be threaded through the coarse to the sleeve. The inside diameter of the cavity at the point of coarse, which is located just in the position where the sleeve is pushed into the body of the terminal, is larger than the coarse diameter increased by twice the thickness of the hose wall.

On the one hand, a hose enters the body of the terminal, on the other hand, the terminal may have a different connection shape or may be blinded in case the terminal is to form a hose closure. The other side of the terminal may be provided with a thread and / or a seal for connection to another element and / or may be provided with a flange or may continue as part of another component with which it forms a unit. The terminal does not necessarily have a cylindrical outer shape. part of another parent component. It is essential that the sleeve is displaceably disposed and that the contact surface of the stop is directed towards the inside of the end piece against the roughening on the sleeve, so that the force of the stop prevents the sleeve from slipping out of the sleeve. The terminal may also, on the other hand, proceed in a similar arrangement with the sliding tube, the terminal being the connecting element for connecting the two hoses.

The cylindrical sleeve may be slidably inserted into an opening in the terminal body. In order to facilitate displacement, the sleeve in another arrangement may be connected to the terminal body by means of a resilient member, for example a bellows, by means of an accordion joint. Such a solution makes it possible to form the terminal body together with the sleeve by, for example, injection molding.

The advantage of the present technical solution is a simple construction with a small number of parts and especially a simple and very fast installation of the hose on the tool-free terminal, just pressing the end of the hose3

S K 8164 Yl ce for sleeve in sleeve. The formed joint is very reliable as increasing pressure in the hose increases the pressure of the hose onto the sleeve, thereby increasing the sealing effect of the joint. The advantage is also the shape freedom of the hose cross-section, the solution is not limited to cylindrical cross-section, as is the case with screw-on sleeves, the solution can also be used on hoses with rectangular cross-section, the hose pressure on the sleeve is uniform around the circumference and not limited to corners profile. The last advantage of the described technical solution is the optional possibility of non-releasable connection of the hose and the terminal. Pulling the hose out of the sleeve causes an even greater grip of the hose on the sleeve, but if the sleeve is held in the stop towards the inside of the terminal body, for example with a simple tool, the sleeve can simply be pulled down.

BRIEF DESCRIPTION OF THE DRAWINGS

The technical solution is explained in more detail with reference to Figures 1 to 4. The scale used and the size ratio of the individual elements, for example the ratio of the sleeve to the terminal body, may not be as described in the examples and these measures and size ratios are not to be construed as restricting the scope.

Fig. 1 is a view of a terminal when a hose is inserted into a terminal opening where the hose is directed to the sleeve.

Figure 2 shows the pressure of the hose on the sleeve, which is supported against the stop in the body opening.

Fig. 3 is a view of the working position of the connector and the hose where the hose is clamped between the stop and the coarse on the sleeve.

Figure 4 shows a solution in which the sleeve is connected to the terminal body by means of a flexible bellows. The bellows fold is enlarged to illustrate, in fact, the bellows may have a different shape and size.

EXAMPLES

Example 1

In this example of Figures 1 to 3, the terminal is connected to a water distribution hose. The end piece has a body 3 formed of plastic to be connected to the pipe system The end piece has a stop 4 with an inner conical surface 6 which is oriented against the conical surface 5 on the sleeve T The sleeve 1 is located in the sleeve of the sleeve. and is sealed against the body 3 by means of a sealing ring 7. On the sleeve 1 there is a roughening 2.

The hose is inserted into the bore in the fitting and is pushed onto the sleeve T by pushing the sleeve 1 into the body 3. Subsequent hose pull or the effect of medium overpressure in the hose causes the sleeve 1 to move with the sleeve. it has a diameter which is larger than the opening in the stop 4 and the ejection of the sleeve from the body 3 stops at the stop 4. The conical surface 6 on the stop 4 and the conical surface 5 on the sleeve 1 clamp the hose, thereby ensuring its tightness against the sleeve T

After releasing the overpressure in the hose, the sleeve can be moved again into the terminal body 3, the visible movement of the sleeve hose has no effect on the tightness of the connection.

In this example, inner conical surfaces are formed in the terminal cavity. The first conical surface guides the hose as it is pushed onto the sleeve J1. The second conical surface forms a support for the sealing ring 7, defining its eventual path of movement when extending the tube T

In this example, the body 3 with the peripheral wall and the stop 4 is molded from plastic as one piece. The other separate piece of the end piece is the plastic sleeve T The sealing ring 7 holds the sleeve! in housing 3 without hose. After threading the hose, remove the sleeve! cannot be removed from the terminal.

Example 2

The terminal in this example of Figure 4 forms part of the engine intake manifold. Mouthpiece! and the body 3 are made as one unit of plastic. To allow the nozzle to move! against the body 3 is a sleeve! connected to the body 3 by means of a flexible bellows, i. j. the accordion. On the mouthpiece! With an approximately rectangular cross-section with rounded corners, the hose is threaded, the return movement of the sleeve! with the hose causes it to jam by the stop 4. In this example, the stop 4 has the form of a hoop having an opening corresponding to the hose profile and the sleeve profile! and is connected to the body 3 by four rods. The rods provide an advantageous semi-rigid anchoring of the hose to the body 3, the bellows generating a bias which maintains the down pressure of the stop 4 on the hose, thereby securing the tightness of the connection even under vacuum in the intake manifold.

N E 8164 Yl

Industrial usability

The industrial applicability of the technical solution is obvious. According to this technical solution, hose ends can be manufactured industrially and repeatedly for various fields of application, for the distribution of air, water, other fluids in industry, agriculture and households.

N E 8164 ΥΙ

List of reference marks

- mouthpiece

- thickening

3 -body

- stop

- conical surface on the sleeve

- conical surface at the stop

- sealing ring

Claims (12)

PROTECTION REQUIREMENTS A hose end piece, in particular as a connecting element, wherein the end piece comprises a body (3) and a sleeve (1) connected to the body (3), the sleeve (1) being adapted to slide the hose end and the sleeve (1) 2) intended to hold the hose on the sleeve (1), characterized in that the sleeve (1) is slidably mounted against the body (3), a circumferential stop (4) with a hose opening is provided in the axis of the sleeve (1); 4) is connected to the body (3), the stop (4) having a circumferential contact surface which is oriented inwardly relative to the roughing (2) on the sleeve (1) and the difference in the diameter of the stop (4) and the diameter of the roughing (2) is less than twice the wall thickness of the hose. A hose end, in particular as a connection element, according to claim 1, characterized in that the sleeve (1) is displaceably disposed within the body (3), between the body (3) and the sleeve (1) is a sealing ring (7), preferably the body (3) has a stop for sliding the sleeve (1). Hose end piece, in particular as a connection element, according to claim 1, characterized in that the sleeve (1) is connected to the body (3) by means of a flexible bellows. Hose end piece, in particular as a connecting element according to any one of claims 1 to 3, characterized in that the stop (4) is interconnected by the wall (3) by a peripheral wall, the peripheral wall forming a cavity in which the sleeve (1) is located. the circumferential wall and the sleeve (1) being a gap of at least the wall thickness of the hose. Hose end piece, in particular as a connection element, according to claim 4, characterized in that the peripheral wall is a continuation of the cylindrical body (3). Hose end piece, in particular as a connection element, according to claims 4 or 5, characterized in that the peripheral wall has an inner conical surface for guiding the hose and an inner conical surface for defining the movement of the sealing ring (7). Hose end piece, in particular as a connection element according to any one of claims 1 to 3, characterized in that the stop (4) is connected to the body (3) by at least two rods. Hose end piece, in particular as a connection element, according to any one of claims 1 to 7, characterized in that the stop (4) has an inner conical surface (6) and the sleeve (1) has an outer conical surface (5) for coarsening (2). 1), preferably the two conical surfaces (5, 6) have the same angle. A hose end, in particular as a connecting element according to any one of claims 1 to 8, characterized in that the sleeve (1) has a cylindrical or elliptical or flattened cross-section, or a rectangular or polygonal cross-section with rounded corners. Hose end piece, in particular as a connecting element according to any one of claims 1 to 9, characterized in that the body (3) is intended to be used as part of a piping system. A hose end, in particular as a connection element, according to any one of claims 1 to 10, characterized in that the body (3) is made of plastic. A hose end, in particular as a connection element, according to any one of claims 1 to 11, characterized in that the sleeve (1) is made of plastic or metal.