CH705623A2 - Plug-in coupling for fluid and / or electricity. - Google Patents

Abstract

The invention relates to a plug-in coupling (1), wherein the nipple (3) by means of a pivotable plate (7) with sickle bar (12), the shoulder (17) or the groove on the nipple (3) to capture and hold and at the same time by means of a corresponding arrangement of an O-ring (6), locking and leak-proof to couple a fluid and and an electric current, as well as by means of a chamfer on the shoulder (17) of the nipple (3), as well as bevel on the sickle bar (12) and support the torsion spring (18) to create a quick coupling.

Description

Technical area

The invention relates to a connecting means for fluids and electric current, according to the preamble of the first claim.

State of the art

Hose connections are a basic element for the use of a hydraulic or pneumatic cylinder and therefore a large amount of connection variants on the market, which all have the same goal, namely to produce a fast, safe and leak-free connection between the hose and cylinder. The same applies to electrical plug connections, which can also be coupled quickly and safely and possibly have to be waterproof.

Most connections are threaded and a few have pluggable solutions, some of which also serve as quick-release fasteners, e.g. in patent EP 0 467 381 A2 or US Pat. No. 5,570,910 or a simple connection as described in patent DE 10 2009 052 284 A1 or simply and in a very limited space, as can be seen in US Pat. No. 5,226,844 a rapid connection of the nipple with the respective bore on the cylinder in many cases clamp or slider known, as described in the patent DE 441 5841 A1, EP 1 043 537 A1 or EP 1 070 855 A1.

Extensions of fluid hoses and electrical lines are consistently carried out by means of couplings, which have a male and a female part and are also majority screw connections.

Presentation of the invention

The invention has for its object to produce on a fluid cylinder a simple and safe, and leak-free plug-in coupling to a fluid hose, with the additional possibility of extending by means of an intermediate connector, a fluid hose according to also. This solution includes in addition to the coupling of fluids and the plug connection of electricity, which serves as a connector and on demand at the same time a fluid flow can be connected to it or can serve as a separate solution. This new type of plug-in coupling, which has a fluid to transport safely, is therefore understandably aligned against leakage and thus, even in the application of a connector for electricity, waterproof. In addition, the plug-in coupling with cable, hereby automatically tensile strength, since it needs a solution-secure pressure load safety device for the fluid transport anyway.

A plug-in coupling is in principle the ideal connection of two hoses or cables, respectively. Hose or cable to cylinder or socket, especially if additionally designed as a quick coupling, but best sealing quality and quick connection do not fit together very well. Therefore, a secure connection of a fast connection is preferred and therefore most couplings are bolted. These are quite tricky, however, because not careful screwing the thread can take damage and thus a leak-free seal most likely destroyed, further there is the problem and the ongoing annoyance between inch and metric threads, especially if a hydraulics in another continent requires a corresponding repair and not everywhere metric or custom mass are at hand, so a repair is cumbersome or cumbersome by Raecords / Umsetzmittel must be used in between from inches to metric or vice versa. Screw connections are usually very large in the outer dimensions and require a lot of space. Although there are space-saving Schraublösungen, but which have only limited holes and above all cause a disturbing flow of the fluid, as indicated in the patent EP 0 892 175 A1.

Quick connections are a good solution, but e.g. in the water area prone to dirt, resp. Growing, which can be called a release of the tube from the cylinder or the cable from the socket in such an environment anything but a quick release. A practical solution can be seen in the patent US 5 226 844 Fig. 2, in which the nipple has a shoulder, which is depressed by means of a holding means and held in position, wherein under the shoulder an O-ring is mounted, which on a stepped bore in the cylinder suppressed.

To take out or introduce the hose nipple, the screw of the holding means must be very far out or completely removed, both time-consuming, respectively. There is a risk of losing the screw in this operation.

Better for this, a split retainer version as shown in US Pat. No. 5,226,844, but losing the parts still remains a problem.

The inventive solution lies in the fact that the nipple, which has a shoulder or a groove is held by a holding medium and possibly also has contact with the cylindrical part of the nipple surface, thus the widest possible contact assignment of the shoulder or the groove surface to the holding means is secured and the holding means for this side is swung out and. If the safety bar on the holding means for the nipple is designed accordingly, even in this configuration, the shoulder on the nipple has an overlap of over 180 °. By means of a Einrasters can always be recognized whether the holding means surrounds the nipple maximum and by means of a chamfer on the nipple, as well as the holding means can thus be carried out a quick connection of the plug-in coupling, which thus inserted with one hand, at the same time sealed, contacted and unintentional withdrawal, even under load, safely prevented.

It is advisable in field applications to have placed the plug-in coupling constructively slightly higher, so that the holding means on the cylinder body unhindered, i. without being scraped sideways, otherwise hardened dirt, sand or fouling can make a deflection function difficult. Furthermore, it is advisable in such an application, the holding medium by means of PTFE or the like to coat to protect the part against fouling and the like.

Furthermore, the nipple or together with the holding means at the same time form a Kodiermittel by the diameter or and the height of the shoulder of the nipple has an influence on the leaning of the holding means on the nipple or the nipple and the space in the cylinder have a corresponding Shape so that only a certain nipple with a specific design in the corresponding opening in the cylinder has room.

This simple plug-in coupling by means of lateral pivoting of the Haltemitteis can also be used for the extension piece by the holding means folded to save space and secured to the side of the connector body.

This is achieved by the features of the first claim according to the invention.

Further advantageous embodiments of the invention will become apparent from the dependent claims.

Core of the invention is, by means of a pivotable holding means, the shoulder of a nipple to take half or more of coverage, which presses by means of a washer on an O-ring, which lies in a stepped bore in the cylinder or in another variant the O-ring is mounted directly on the shaft to secure in this way the seal of the plug-in coupling, as well as by means of a chamfer on the shoulder of the nipple, as well as a chamfer on the holding means and by means of the support of a spring to provide a quick coupling to to couple a fluid and an electric current easily and safely.

Short description of the drawing

In the following, embodiments of the invention will be explained in more detail with reference to the drawings. The same elements are provided in the various figures with the same reference numerals.

[0018] FIG. <Tb> FIG. 1 <sep> is a side view of a plug-in coupling in the form of a fluid hose with nipple and the fluid connection, which has a washer and an O-ring and is embedded in a stepped bore and the nipple is held by a laterally pivotable sickle-shaped plate by means of a screw, which Rasterelement has <Tb> FIG. 2 <sep> a side view of a plug-in coupling in the form of a fluid hose with nipple and the fluid connection, which additionally has a current guide and the nipple is a shoulder attached to a laterally pivotable crescent-shaped plate and the plate has a torsion spring with screw <Tb> FIG. 3 <sep> a side view of two plug-in couplings in the form of a fluid hose with nipple and the fluid connection to a connecting means, which are held by angled, laterally pivotable, crescent-shaped plates <Tb> FIG. Fig. 4 is a side view of a plug-type coupling in the form of a fluid hose with nipple and the fluid connection and held by a laterally swingable sickle-shaped plate having a spring-loaded opener.

Only the essential elements for the immediate understanding of the invention are shown.

Way to carry out the invention

Fig. 1 shows a side view of a plug-in coupling 1 in the form of a hose 2 with a hollowed nipple 3 pressed thereon, consisting of the hose connection part 3a and the shaft 3b and the fluid connection, designed as a socket 4 in the form of a stepped bore, in the a washer 5 and an O-ring 6 are inserted and the nipple 3 is held by a laterally pivotable plate 7 by means of a screw 8, and the cylinder part 9, a grid element 10 is mounted. The plate 7 has a sickle bar 12, a handle bar 13, a screw hole 8 a and a positioning hole 14.

The connection of the nipple 3 with the hose 2 is prior art. The nipple 3 has at the transition point to the socket 4, a groove 11 which serves to let the plate 7 engage therein so that the nipple 3 can not be withdrawn without actuation of the plate 7 again. The plate 7 therefore has a shape which is intended to be able to engage correspondingly in the groove 11 by means of the sickle bar 12, with the largest possible contact surface of the plate 7 with respect to the nipple 3. In addition, the plate 7 has a gripping strip 13, so that the plate 7 manually pressed against the nipple 3 and also can be accordingly pushed away again. In order to make the position of the plate 7 for the user of the plug-in coupling 1 better detectable, a screening is attached to the cylinder part 9, which consists of the resilient grid element 10 and the positioning hole 14 in the plate. 7

Now, if the nipple 3 is inserted into the socket 4 on the cylinder part 9, positioned as the first of the shaft 3b in the bore of the bushing 4, the nipple 3. The retraction of the nipple 3 is limited by the boundary shoulder 15. For sealing the plug-in coupling 1, a step 16 is mounted in the bore of the bushing 4, so that the O-ring 6 has space therein and by means of the washer 5, which is pressed by the plate 7 over a large area in the bore, thereby the O-ring 6 controlled compressed and so ensure a secure seal the plug-in coupling 1. Ideal is a cambered or at least beveled washer 5, so that when pivoting the plate 7, these can better slide over the washer 5. The shaft 3b is tolerated accordingly and its length thus reliably prevents tilting of the nipple 3. The arrow F shows the fluid path.

The depression of the washer 5 by means of the pivoting of the plate 7, soft on the cylinder part 9 by means of the screw 8, which may be only an axially secured pin by manually pressed laterally on the handle bar 13 until the sickle bar 12 in the groove 11 fits, so that the groove shoulder 11a is covered as extensively as possible by the plate 7. To know, feel and hear whether the plate 7 is in the correct closed position, a grid can be attached. When the grid member 10 snaps into the locating hole 14, a snap-in click is heard and the plate 7 is held in place. By means of the screw 8 and corresponding means against uncontrolled detachment of these, the plate 7 can be fixed and thus the plug-in coupling 1 is optimally secured.

Fig. 2 shows a side view of a plug-in coupling 1 in the form of a hose 2 with a hollowed nipple 3 pressed thereon, consisting of the hose connection part 3a and the shaft 3b and the fluid connection, designed as a socket 4 in the form of a stepped bore, in the the shoulder 17 of the nipple 7 rests and is held vertically by means of the laterally pivotable plate 7 and between plate 7 and cylinder part 9 a torsion spring 18 is located. The plug-in coupling 1 additionally has a set of cables 19 which is carried through the nipple 3 and has contact elements 20 on the shaft 3b. The socket 4 has opposite a power socket 21 with the receiving contact elements 22. In the nipple 3 is a fluid bore 23 is available, so continue at the same time a fluid can be transported.

In this version, the nipple 3 instead of a groove 11 has a shoulder 17, which can be retracted in this way until the gradation 16 in the socket 4 and thus forms the limit. Furthermore, the shaft 3b has an O-ring groove 6a, which receives the O-ring 6 as a sealing function. The unplugging of the nipple 3 only works if the plate 7 has not pushed over the shoulder 17. In this regard, the plate 7 is correspondingly formed with a sickle bar 12 in order to achieve the best possible coverage of the shoulder 17. A torsion spring 18 is mounted under the plate 7, which is supported on the one hand on the cylinder part 9, on the other hand biased to the plate 7 by means of the wire opening 24, so that by means of the screw 8 or other rotary function means the plate 7 always turns in the closing direction up to a rotary stopper not shown here.

The shoulder 17 can be made of a cylindrical tube in one operation to a nipple 3, or material-friendly a corresponding groove are inserted into the nipple 3, in which a snap ring is introduced, which takes over the function of a shoulder 17. In the snap ring version, a washer 5 is to be placed between this and the O-ring 6 in the step 15.

In this version is also listed as at the same time a current can be contacted, shown here in a kind of jack. The introduction of the cable 19 and the attached contact elements 20 together with the insulation is state of the art. New is the fluid bore 23 in the nipple 3, which allows one hose 2 to be connected to another hose 2 or a e.g. To connect cylinder part 9 by means of the plug-in coupling 1 and to transport a fluid, at the same time also to contact a current to transport power for a drive power or as a signal value. It does not matter if the fluid is gaseous or liquid. Furthermore, the nipple 3 can be bent so that the tube 2 resp. the cable 19 by e.g. 90 ° angled away can be led away.

In the socket 4, the step 16 is as stated above, as are the receiving contact elements 22, which are e.g. are equipped with spring elements, so that a good contact with the contact elements 20 is generated and to the receiving contact elements 22 are also 19 cables attached, which forward the current accordingly.

This version of the plug-in coupling 1 can logically also be used alone only for electrical connections, this requires no fluid hole 23 and no hose 2, but a corresponding cable 19 with the appropriate number of required wires. Instead of a jack plug type for good contacting of power, a pin version with or without fluid feedthrough is also possible.

It is important that in the version of the nipple 3 with the groove 11, as shown in Fig. 1, in conjunction with the current guide, this a limiting paragraph 15 is present, so that the nipple 3 are not inserted too deeply when plugging can, otherwise the contact elements 20 with the receiving contact elements 22 can not be suitable and it can lead to a short circuit.

Fig. 3 shows a side view of two plug-in couplings 1 in the form of a hose 2 with a hollowed nipple 3 pressed thereon, consisting of the hose connection part 3a and the shaft 3b and the fluid connection in the coupling part 25, designed as a socket 4 in the form of a stepped bore , In the left half indicated with the nipple 3 and the shoulder 17, in the right half in the nipple 3 and 11 groove execution. The nipples 3 are inserted in the bushing 4 and are held by means of a respective angled plate 7 pivotable laterally.

The advantage is e.g. in that the nipple 3 and the socket 4 can always be made the same and the hose 2, whichever end holds one, can be coupled immediately, since the cylinder or the wall box or the coupling part 25 always has the socket 4, the hose 2 with or without electrical contact always has a nipple 3 and in this configuration is electrically harmless, as long as low currents are performed.

The housing of the coupling part 25 can also be made slimmer by the plate 7 is made angled. The coupling part 25 then has to be rounded accordingly, so as to ensure the pivoting function of the plate 7 and the plate 7 may be L- or U-shaped.

Fig. 4 shows a side view of a plug-in coupling 1 in the form of a hose 2 with a hollow molded nipple 3 pressed thereon, consisting of the hose connection part 3a and the shaft 3b and the fluid connection, designed as a socket 4 in the form of a stepped bore, in which the nipple 3 with the bevelled shoulder 17 fits into the step 16. The nipple 3 is held against unintentional removal from the socket 4 by means of a spring-loaded, laterally pivotable plate 7.

This variant shows the quick release of the plug-in coupling 1 by the spring-loaded plate 7, as shown in Fig. 2, the socket 4 slightly covers. By retracting the shaft 3b and finally the contact of the tapered shoulder 17 with the also beveled sickle bar 12 on the plate 7, the spring-loaded plate 7 is pushed aside in a further pushing the nipple 3 aside until the shoulder 17 is pushed through the plate 7 and the Shoulder 17 stops at the gradation 16, the plate 7 snaps back and presses with the sickle bar 12 now against the hose connection part 3 a and thus blocks the maximum shoulder 17 so that the nipple 3 can not be withdrawn.

The closure of the plug-in coupling 1 can thus be done easily with one hand and is secured by means of the plate 7, which is rotatably supported by the screw 8, not shown here or axially secured pin, and thus secured in the pulling direction. By means of the shaft 3b mounted O-ring 6, the plug-in coupling 1 is sealed at the same time.

The release of the plug-in coupling 1 is carried out either as described in Fig. 1 or Fig. 2, or on the cylinder part 9 next to the socket 4, there is an unlock button 26, which conveniently has a finger surface, is conical and formed on a compression spring 27th rests. The unlock button 26 is longitudinally guided in the cylinder part 9 and may have a seal by means of an O-ring, so that even in the outer region of the release button 26 can always perform its function and is advantageously placed in a conical opening 28 in the plate 7, so when pressed on the Unlocking button 26, due to the conical configuration, so that the plate 7 is pushed away laterally and the shoulder 17 and thus the nipple 3 released and the plug-in coupling 1 is solved elegantly and easily.

The further advantage of this embodiment is that the blocking does not occur in the region of the stem 3b, i. inside the socket 4 plays, but is externally controllable and visible.

Nevertheless, for optical or pollution reasons, it may be that the plate 7 is not to be seen or protected from the outside. For this purpose, a cover 29 is provided, which may also be made of plastic, which covers the mechanism and thus only just the opening of the socket 4 and the unlock button 26 are recognizable accordingly.

Of course, the invention is not limited to the embodiments shown and described.

LIST OF REFERENCE NUMBERS

[0041] <Tb> 1 <sep> plug-in coupling <Tb> 2 <sep> Hose <Tb> 3 <sep> nipple <Tb> 3 <sep> hose connecting part <Tb> 3b <sep> End <Tb> 4 <sep> Bush <Tb> 5 <sep> Washer <Tb> 6 <sep> O-ring <Tb> 6 <sep> O-ring groove <Tb> 7 <sep> Plate <Tb> 8 <sep> Bolt <Tb> 8 <sep> screw hole <Tb> 9 <sep> cylinder part <Tb> 10 <sep> grid element <Tb> 11 <sep> Nut <Tb> 11 <sep> Nutabsatz <Tb> 12 <sep> sickle bar <Tb> 13 <sep> handle bar <Tb> 14 <sep> positioning <Tb> 15 <sep> Limit paragraph <Tb> 16 <sep> Increments <Tb> 17 <sep> Shoulder <Tb> 18 <sep> torsion spring <Tb> 19 <sep> Cables <Tb> 20 <sep> contact element <Tb> 21 <sep> Power Port <Tb> 22 <sep> Recorder contact element <Tb> 23 <sep> fluid bore <Tb> 24 <sep> wire holder <Tb> 25 <sep> coupling part <Tb> 26 <sep> unlock button <Tb> 27 <sep> spring <tb> 28 <sep> Opening conical <Tb> 29 <sep> cover <Tb> F <sep> fluid flow

Claims (10)

1. plug-in coupling (1), characterized in that the nipple (3) has a hose connection part (3a) on which a groove (11) or a shoulder (17) is mounted and in connection with the means of an axially secured pin or screw (8 ) pivotable plate (7) having a sickle bar (12) and the socket (4) with the recessed gradation (16) or the Begrenzungsabsatz (15) in the thus the nipple (3) is held axially and by means of the inserted shaft (3b ) is guided radially in the bushing (4) and fluid or and transported electricity or the plug-in coupling (1) in conjunction with a beveled sickle bar (12) and a tapered shoulder (17) and a torsion spring (18) acts as a quick coupling. 2. Plug-in coupling (1) according to claim 1, characterized in that the plate (7) on the cylinder part (9) by means of the screw (8) or an axially secured pin can pivot laterally and a sickle bar (12) and or between the Plate (7) and the cylinder part (9) is a grid means (10) or a torsion spring (18) and by means of the screw (8), the plate (7) is locked in a secure manner. 3. Plug-in coupling (1) according to claim 1, characterized in that the sickle bar (12) either in the groove (11) engages or over the shoulder (17) and this is a touch overlap of the plate (7) to the nipple (3) has over 180 ° and the Sichelleiste (12) as possible rests on the cylindrical part of the nipple (3). 4. plug-in coupling (1) according to claim 1, characterized in that the quick coupling has a beveled sickle bar (12) and a beveled shoulder (17) and a torsion spring (18) and a Ensperrknopf (26) and the latter in the opening (28) positioned in the plate (7) and guided in the cylinder part (9), and there is a compression spring (27) underneath. 5. Plug-in coupling (1) according to claim 1, characterized in that the shoulder (17) is a part of the nipple (3) or an insert in the form of a snap ring in the nipple (3) or that the washer (5) on the side of Plate (7) is cambered or the nipple (3) can be curved. 6. Plug-in coupling (1) according to claim 1, characterized in that the O-ring between the gradation (16) and the washer (5) and the washer (5) is held down by the plate (7) or the O-ring (6) lies directly between the step (16) and the shoulder (17) and the shoulder (17) is held down by the plate (7) or that the O-ring (6) in the annular groove (6a) in the shaft (3b ) is attached. 7. Plug-in coupling (1) according to claim 1, characterized in that the coupling part (25) structurally identical to the bushing (4) and nipple (7) and plate (7) or the plate (7) can be angled. 8. Plug-in coupling (1) according to claim 1, characterized in that by means of the nipple (3) and the bushing (4) can contact fluid and electricity and the nipple (4) contact elements (20) are mounted and on the socket (4 ) in the power socket (21) receiving contact elements (22) and the nipple (3) for this purpose has a fluid bore (23) and without fluid bore (23) only transported electricity. 9. plug-in coupling (1) according to claim 1, characterized in that the nipple (3) with the groove (11) in conjunction with the current guide has a boundary shoulder (15). 10. plug-in coupling (1) according to claim 1, characterized in that the plate (7) on the cylinder part (9) by means of the cover (29) is protected.