EP2871151A1 - Pump hose assembly - Google Patents

Abstract

The invention relates to a dispensing hose arrangement (1) for dispensers, comprising a hose (4) arranged in a housing (2) from a hose connection (6) to a housing opening (3) and passing through the housing opening (3) against a return force Hose return from the housing (2) can be pulled out, wherein the hose return has a hose return means (8) which is connected on the one hand with a biasing means (9) and on the other hand with a nozzle region remote from the nozzle (7) of the hose (4). In order to reduce the number of functional elements within the dispensing hose assembly (1) and to reduce the friction of the hose (4) and / or hose return means (8) during withdrawal and retrieval, the invention proposes that the hose (4) and / or the Hose return means (8) between the hose connection (6) and housing opening (3) over a maximum of one roller (10) is guided.

Description

The invention relates to a Zapfschlauchanordnung for fuel dispensers, with a hose which connects a fuel nozzle with a hose connection and which is arranged in a housing from the hose connection to a housing opening and through the housing opening against a return force of a hose return from the housing extendable, the hose return a Hose return means which is connected on the one hand with a biasing means and on the other hand with a nozzle region remote from the hose.

Dispensing hose assemblies are used in the area of petrol pumps at petrol stations. On the one hand, there is a desire, depending on the parking position of the vehicle to be refueled relative to the dispenser, to be able to flexibly use a sufficient hose length in order to refuel the vehicle. On the other hand, the hose should not be messy and especially not lying around on the ground, as it could be damaged by being run over.

In the prior art, a plurality of dispensing hose assemblies are known, in which a hose length which can be withdrawn from a housing is kept in the housing. In general, this includes all hose or cable storage, in which a winding on drums, spools or reels is not possible. In this case, the hose is guided over movable or stationary arranged in the housing pulleys, which cause a hose guide in different ways on the one hand, on the other hand, a hose return.

In the EP 1 832 549 A1 a dispensing hose assembly for dispensers is described in which the hose is extendable through an approximately waist-high housing opening of the housing. The hose is guided by two rollers, which are arranged on the upper boundary of the housing opening on the housing and thereby equally lead the hose around itself so that the retrieval of the hose into the housing can be done comparatively soft. This also results in a comparatively easy pullout of the hose from the housing, ie against the return force of the hose return.

The use of two rolls is in the EP 1 832 549 A1 inter alia necessary because - due to the selected geometry of hose connection, biasing means and housing depth, especially due to the gehäuseöffnungsseitig guided around the biasing means hose return means - the lowermost arc of the retrieved hose protrudes too far out of the housing because of the necessary bending radii. According to the solution chosen in the prior art, the retrieved hose is now located inside the housing on the inner of the two rollers so that the lowermost hose bend is pushed further into the housing.

The outer role ensures in the EP 1 832 549 A1 ensure that hose and return means do not come into contact with the upper limit of the housing opening.

Although the aforementioned two-roller dispensing hose assemblies have proven themselves in the prior art, they nevertheless have the disadvantage that they cause increased friction of the hose due to the use of two rollers and additionally cause higher material and maintenance costs.

In addition, the reveals EP 1 832 549 A1 Alternatively, a roller-free dispensing hose assembly, wherein the hose is arranged without hose return in the housing and is pulled freely hanging on the hose connection through the housing opening. However, since the housing opening has a limited height, it comes with complete extraction of the dispensing hose to a contact of the hose with the upper boundary of the housing opening. In this case, the hose can be damaged by the friction at the upper boundary of the housing opening and / or be torn from the hose connection.

Based on the aforementioned prior art, the invention is the object of the invention to provide a dispensing hose assembly, which is constructed with as few components and thus both reduces the cost, and at the same time as frictionless pulling out and retrieving the hose from or in the housing allows. At the same time, a friction of the hose at the upper boundary of the housing opening should be avoided.

To achieve the above object, the invention proposes a dispensing hose assembly according to claim 1, wherein the hose and / or the hose return means between hose connection and housing opening is guided over a maximum of one roller. The term "maximally a role" in the context of the present invention includes embodiments which have no role or exactly one role. The solutions according to the invention, which have no or only a role, are particularly simple and require a total of only a very small number of components, which significantly reduces the manufacturing and maintenance costs. At the same time, by reducing the number of rollers used, friction of the hose is reduced or avoided altogether, so that it is possible to pull out and retrieve the hose from or into the housing as smoothly as possible.

A possible embodiment of the invention provides that the hose and / or the hose return means is guided over only one roller, wherein the roller is arranged at a vertical orientation of the housing at the upper boundary of the housing opening. In this case, the hose or the hose return means advantageously around the roller, d. H. at the same time also around the upper boundary of the housing opening, guided around, wherein the hose or the hose return means can be pulled without damage from the housing and retrieved back into the housing. By using only one roller, the friction of the hose or the hose return means is reduced to existing components. At the same time results in a minimal material and thus at the same cost also for the production of the dispensing hose assembly according to the invention.

According to an alternative embodiment of the invention, the dispensing hose assembly is designed such that the hose and / or the hose return means is guided without rolling, wherein the housing opening is formed so that their upper limit in vertical alignment of the housing substantially at the level of Hose connection is arranged. By this embodiment it is prevented - if the dispensing tube is pulled out very far or completely out of the housing - the tube and / or the hose return means comes into contact with the upper boundary of the housing opening. According to this exemplary embodiment of the invention, the housing opening now extends so high that neither the hose nor the hose return means comes into contact with the upper boundary of the housing opening even when the hose is completely pulled out. In this case, no role to guide the hose and / or Schlauchrückholmittels is required. According to this embodiment, the arrangement of rollers is thus completely eliminated, so that a particularly cost-effective and maintenance-free dispensing hose arrangement is provided.

Both of the aforementioned embodiments do not require a second roller in the region of the housing opening, since the hose return means is placed around the biasing means from the side facing away from the housing opening. As a result, the hose is led further into the housing and takes the desired position without any further roller.

The invention further provides that the biasing means is arranged in the region of the hose connection within the housing. By this arrangement, biasing means and hose connection are substantially at the same height within the housing, so that results in a completely recuperated in the housing hose a W-shape of the hose. As a result, the hose is at the same time space-saving and damage-free introduced into the housing.

It is further provided that the hose connection is arranged in the vertical orientation of the housing in the upper region of the housing. This makes it particularly easy to achieve the W-shape of the retrieved hose.

Advantageously, the housing opening is slit-shaped. As a result, the hose can be guided without friction in the vertical direction, but at the same time receives only a slight freedom of movement in the horizontal direction, so that it can not come into contact with other elements of the dispenser, for example other dispensing hose arrangements.

Advantageously, the housing opening is wider than the hose, but narrower than its double width. The particular slot-shaped opening is thus sufficiently wide, so that a hose can be led out of the housing through just this housing opening. Typically, the width of the housing opening is a few centimeters larger than the outer diameter of the hose, and in any case less than twice the outer diameter of the hose.

The hose return means is advantageously connected by means of a hose clamp or an integrally formed with the hose attachment means with the hose. The hose return force is applied to the hose by means of the biasing means, the biasing means engaging the hose via the return means. The return means is connected to a region of the hose, which is arranged at a distance from the fuel nozzle. Advantageously, the connection by means of a hose clamp, in particular plastic clamp. But it can also be provided a metal hose clamp. Likewise advantageously, the connection between the return means and hose by means of an eyelet or an eye, which is vulcanized on the tube.

The return means is advantageously a rope, in particular a polyester rope, or else a string or chain with metallic or plastic links. Furthermore, the return means can be made of other flexible, elastic and suitable for transmitting tensile materials, such as wire, elastic cord, elastic band or the like. In any case, it makes sense that the return agent is designed fuel and weather resistant.

It is provided that the biasing means is a tensioning roller, in particular a weight or spring-loaded tensioning roller. Depending on the design of the weight or spring force can engage a more or less large return force on the hose and allow both a convenient withdrawal of the hose from the housing, as well as a convenient return of the hose in the housing effect.

Finally, it is provided that the roller has means for at least partially receiving the hose and / or the hose return means, in particular side cheeks. The roll is arranged so that it initially leads a portion of the hose and in addition to further pulling out a portion of the return means. At the same time the roller is arranged so that it receives the hose and leads in the direction of the upper boundary of the housing opening, as soon as this from the return means in the housing is retrieved. Advantageously, the role in this case has two side cheeks, so that the hose and the return means remain on the circumference of the roll even if the hose is not pulled out at right angles from the housing opening, but rather obliquely thereto.

• Fig. 1: erfindungsgemäße Zapfschlauchanordnung mit eingezogenem Schlauch,
• Fig. 2: erfindungsgemäße Zapfschlauchanordnung mit teilweise ausgezogenem Schlauch,
• Fig. 3: erfindungsgemäße Zapfschlauchanordnung mit vollständig ausgezogenem Schlauch,
• Fig. 4: alternative erfindungsgemäße Zapfschlauchanordnung mit vollständig ausgezogenem Schlauch,
• Fig. 5: Rolle.

In the following the invention will be explained in more detail with reference to an embodiment. Showing:

• Fig. 1 : dispensing hose assembly according to the invention with retracted hose,
• Fig. 2 : Tap line arrangement according to the invention with partially drawn-out hose,
• Fig. 3 : Tap line arrangement according to the invention with completely drawn out hose,
• Fig. 4 : alternative dispensing hose arrangement according to the invention with completely drawn out hose,
• Fig. 5 : Roll.

Fig. 1 shows a dispensing hose assembly 1 with a housing 2, which has a slot-shaped housing opening 3. The housing opening 3 extends from the lower end of the housing 2 to about the waist of a user. The housing opening 3 is sufficiently wide, so that a hose 4, which connects a fuel nozzle 5 with a hose connection 6 in the interior of the housing 2, can be guided outside the housing 2 through this housing opening 3. Typically, the housing opening 3 is larger by a few centimeters than the outer diameter of the hose 4 and smaller than twice the outer diameter of the hose 4. The hose 4 is designed as a pressure hose and is supplied with fuel by a fuel delivery pump (not shown) via the hose connection 6. The hose connection 6 is located in the upper region of the housing 2, so that the connection-side part of the hose 4 slopes down into the housing 2.

Fig. 2 shows the dispensing hose assembly according to the invention according to Fig. 1 with partial drawn hose 4. It can be seen here the hose return means 8, which is arranged between a biasing means 9 and a nozzle 7 remote from the hose 4. The nozzle-remote area 7 is located approximately in the region of the upper boundary of the housing opening 3, wherein the return force of the biasing means 9 acts on the hose 4. In doing so, the in Fig. 1 illustrated W-shape of the tube 4 within the housing 2 repealed.

Fig. 3 shows the dispensing hose assembly 1 according to the invention with almost completely drawn-out hose 4. It can be seen that the hose 4 is connected via the return means 8 with the biasing means 9. The return means 8 engages the hose 4 within the nozzle region 7 away from the nozzle. The return means 8 is also placed on the side facing away from the housing opening around the biasing means 9, so that the tube 4 is deeply recirculated into the housing 2 and completely assumes the desired W-shape without further aids.

For removal of the tube 4 according to the in the FIGS. 1 to 3 In the embodiment shown, the user must overcome the force of the biasing means 9 and pull the tube 4 out of the housing 2. At the same time arranged on the hose 4 hose return means 8 is pulled out of the biasing means 9 and simultaneously performed with the hose 4 on the roller 10, as soon as the arranged on the hose 4 nozzle range 7, in which the hose return means 8 is connected to the hose 4 , the housing opening 3 happens. In the reverse direction, ie when retrieving the hose, the biasing means 9 retracts the return means 8 again and thus brings the hose 4 back into the housing 2, for example as soon as the user no longer applies tensile force to the hose 4.

Hose connection 6 and biasing means 9 are arranged within the housing 2, that both are arranged at approximately the same height in the upper region of the housing 2. As soon as the biasing means 9 has completely retracted the hose return means 8 into the housing 2, the nozzle area 7, ie the connection area between hose return means 8 and hose 4, is at approximately the same height as the hose connection 6. The hose 4 hangs in an S shape the hose connection 6 and the biasing means 9 within the housing 2.

According to this embodiment, hose return means 8 and hose 4 are guided around the upper limit of the housing opening 3 by means of a single roller 10. In this case, the roller 10 is arranged at the upper boundary of the housing opening 3 so that hose return means 8 or hose 4 do not come into contact with the upper boundary of the housing opening 2. Damage to the hose 4 and also the hose return means 8 can thus be effectively prevented. In addition, the use of only one roller 10 results in the lowest possible resistance in the extraction and retrieval of the hose 4 or the hose return means 8 into the housing 2.

Optionally, the connection between the hose 4 and the hose return means 8 by means of a hose clamp done. This hose clamp can be made of plastic as well as metal. Alternatively, an eyelet or eye may be vulcanized onto the tube 4. The hose return means 8 may be, for example, a polyester rope. Alternatively, however, other flexible and suitable for the transmission of tensile materials come into question. Thus, the hose return means 8 may also be formed as a cord or chain with metal or plastic links as well as wire, elastic cord or elastic band. The material of the hose return means 8 should be resistant to fuel and weather in any case, since it is led out with the hose 4 from the housing 2 and thus exposed to both the weather and contamination by fuel. The biasing means 9 is designed as a tensioning roller. This can work both weight-loaded and spring-loaded. In the case of a spring-loaded tension roller, in particular, the use of a spiral spring, which seeks to pull the pulled out of the housing 2 hose 4 back into the housing 2 is suitable.

The roller 10 is arranged on the housing 2 such that the hose 4 rests against the circumference of the roller 10. The roller 10 is rotatable about its axis of rotation and thus allows a longitudinal movement of the adjacent hose 4 and / or the Schlauchrückholmittels 8. The roller 10 is further arranged so that this first part of the hose 4 and further extension of a part of the hose return means 8 leads. At the same time, the roller 10 is arranged so that it receives the hose 4 and returns in the direction of the biasing means 9 in the upper region of the housing 2.

As soon as the hose 4 has been extended so far that the connection region between the hose 4 and the hose return means 8 emerges from the housing 2, not only the hose 4 but also the hose return means 8 abuts against the circumference of the roller 10. The roller 10 then allows further movement of the adjacent hose 4 and the hose return means 8, so that the hose 4 can be pulled back into the housing 2 from this position.

An alternative embodiment of the invention shows Fig. 4 , In this embodiment, the tube 4 is guided without a roller within the housing 2, wherein the housing opening 3 is formed so that their vertical orientation of the housing 2 upper boundary 12 is disposed substantially at the height of the hose connection 6. In this case, the housing opening 3 in the housing 2 extends so high that neither the hose 4 nor the hose return means 8 comes into contact with the upper boundary 12 of the housing opening 3 even when the hose 4 is completely pulled out. In this case, therefore, no roller 10 for guiding hose 4 and hose return means 8 is required. This results in a dispensing hose assembly 1, which requires a particularly small number of functional elements. Overall, the hose return mechanism thus reduces to the hose return means 8 arranged on the hose 4 and the pretensioning means 9 arranged in the housing 2.

Fig. 5 shows the for the embodiment according to the FIGS. 1 to 3 suitable roller 10. This has two side walls 11 which hold the tube 4 and / or the hose return means 8 on the circumference of the roller 10, even if the hose 4 is not guided at right angles to the housing 2, but instead obliquely.

Overall, a dispensing hose assembly 1 is thus created by both embodiments of the invention, which makes do with as few parts, in particular moving parts, within the housing 2. By reducing the number of rollers 10 to one or even no roller 10, the friction of the hose 4 and the hose return means 8 during withdrawal and retrieval of the hose 4 or hose return means 8 is also reduced.

LIST OF REFERENCE NUMBERS

1

Filling hose assembly

2

casing

3

housing opening

4

tube

5

gas pump nozzle

6

hose connection

7

Fuel pump remote area

8th

Schlauchrückholmittel

9

biasing means

10

role

11

Sidewall

12

upper limit

Claims (10)

A dispensing hose assembly (1) for dispensers, comprising a hose (4) disposed in a housing (2) from a hose connection (6) to a housing opening (3) and through the housing opening (3) against a return force of a hose return from the housing (2) is extendable, wherein the hose return comprises a hose return means (8), which on the one hand with a biasing means (9) and on the other hand with a nozzle region (7) of the hose (4) is connected, characterized
that the tube (4) and / or the Schlauchrückholmittel (8) is guided between the hose connection (6) and the housing opening (3) over a maximum of a roller (10). A dispensing hose assembly (1) according to claim 1, characterized in that the hose (4) and / or the hose return means is guided over only one roller (10), wherein the roller (10) in vertical alignment of the housing (2) at the upper boundary the housing opening (3) is arranged. Tap hose assembly (1) according to claim 1, characterized in that the hose (4) and / or the hose return means is guided without rollers, wherein the housing opening (3) is formed so that their vertical orientation of the housing (2) upper boundary (12 ) is arranged substantially at the height of the hose connection (6). Tap hose arrangement (1) according to one of the preceding claims, characterized in that the biasing means (9) in the region of the hose connection (6) is arranged. Tap hose arrangement (1) according to one of the preceding claims, characterized in that the hose connection (6) is arranged in the vertical direction of the housing (2) in the upper region of the housing (2). Tap hose arrangement (1) according to one of the preceding claims, characterized in that the housing opening (3) is slot-shaped. Tap hose arrangement (1) according to one of the preceding claims, characterized in that the housing opening (3) is wider than the hose (4), but narrower than its double width. Tap hose assembly (1) according to any one of the preceding claims, characterized in that the hose return means (8) by means of a hose clamp or an integrally formed with the hose (4) fastening means with the hose (4) is connected. A dispensing hose assembly (1) according to any one of the preceding claims, characterized in that the biasing means (9) is a tensioning roller, in particular a weight-loaded or spring-loaded tensioning roller. Tap hose assembly (1) according to any one of the preceding claims, characterized in that the roller (10) side cheeks (11) for at least partially receiving the hose (4) and / or the hose return means (8).

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