DE2134732A1 - Pipe connector - Google Patents

Description

PATENT LAWYERS

DIPL.4NG. GÜNTHER KOCH

DR. TINO HAIBACH

8 MUNICH 2, ^ "Uil Ι3Π

OUR MARK: 13 187

TUTHILL PUMP COMPANY Chicago, Illinois, T.St.A.

Pipe connector

The invention relates to a screw connector for Connecting devices with thin-walled pipes or Similar components, such as those used in cooling devices, for example, and which are subjected to a high-pressure test before they can be put into operation. When such devices e.g. when walking through an assembly line or be checked after their final list it is necessary to ensure that it is possible to connect the device to be tested to a test facility and such a connection must be easy and quick to make. The invention proposes one that is easy to use Kohrverbinders before, which makes it possible in a certain embodiment, a pipe provided with a thread or to detect a connector of the device to be tested and to connect the device to a high-pressure testing device. Since two 'jaw-like' clamping pieces are used here, the screw connector can easily be attached to the threaded one Attach iiohr or fitting, and this will the olifcne ^ end of the pipeline or the connecting piece with sealing effect; with an irmoren JJcutuil of the ^ ear pre-tie brought together, and your connector is in turn to a jjruckHiitoelcjUollu öngeschloüijen, go d; ß off to

109884/1302

BATH ORIGINAL

testing device in the required manner of a high pressure test can be subjected to. With a further form of guiding The invention is an inner part of the ear connector designed in the form of a pressure piece, which, when it comes to rest on the connection piece of the device, causes that a valve in the pipeline or a valve connection of the device to be tested is opened with the help of a simple movable component. In the case of cooling devices, the z.L. are provided with a valve of the bchrader type, in which it is a simple needle valve, it is necessary to move an actuating pin of the valve axially, to make the pipe connection in which the valve is arranged, and thus also the device to be tested, accessible.

The Eohr connector according to the invention is designed so that all that is required is an external! "laugh of the To move the pipe connector axially forward to cause the lilemmteile to be brought into their open position; the outer x> g.o part of the it-pipe connector is released again, is caused by biasing spring means that the lilemmteile are brought into their closed position in which they the i.nd Firmly enclose the pipeline or the line connection of the device to be tested in order to establish the desired connection.

The movement just described causes at the same time that a sealing device is brought into effect, the one to the outside substantially completely sealed connection between the kohrverbincier and the connection of the device to be tested.

A flow connection provided in the tube connector provides a "connection between the interior of the connector, which is detected by the threaded connector, and the testing device here, by means of which the Gt to be checked advises under high pressure. Iflud can be supplied if the Lohr connector is to be released again, it is

109884/130?

set senses "actuated.

As far as is known, according to the previous state of technology it is first and foremost to work with levers and sealing parts made of plastic materials and the like in order to connect a pipeline or a connecting piece with a testing device However, in most cases no components are provided which act like two opposing grippers or jaw-like clamping pieces in order to establish a reliable connection with an oil ear that is connected to a source for a high-pressure load In addition, in contrast to the Lohrconnectors according to the invention, these known devices do not enable the desired connection to be established and released again quickly.

Generally speaking, the invention provides a threaded connector before, which comprises a first component, which gripper means or the like for gripping a Lindes one ivohrs included. A second component is attached to this first component attached, the ear sealant carries, which serve to the jjiide of a Hohr inserted into the connector to seal outside. The breeder funds are opposite to the second Beuteil axially displaceable and can be compared to a tube inserted into the Kohrverbinders as required in a Gripping position or brought into an open position. The first and second components are inside Connection with each other, and the second sound part is with connection with, eln provided that allow the second component to a trüfeinriclitung or a source for a sub to connect high pressure Ja'lud.

The invention and advantageous details of the invention are explained in more detail below with reference to schematic drawings of Äusführungsbeibpiclen.

i'ig. 1 shows a pipe connector according to the invention in a cross-section along the line 1-1 in FIG. 2 ο

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£ ■ "■? ■ ORIGINAL

Ϊ! Ig * 2 shows a top view of the left end of the Pipe connector according to Fig. 1.

Fig. 5 shows in a partial section a Jxohr connection, with which the audio connector according to FIGS. 1 and 2 are connected can.

Pig. 4 is similar to I'ig. 1, however, shows another embodiment a drill connector according to the invention.

Fig. 5 shows in an exploded side view different parts of the ear connector according to Fig. 1 and 2 "

6 shows, in a further exploded side view, several parts of a sub-assembly of the I-tube connector according to Fig. 5

In the figures, parts that correspond to one another are denoted by the same reference numerals; The Eohr connector shown in Fig. 1 comprises two main parts, namely a first component, designated as a whole by 4, which carries the gripper means, designated as a whole by 6, and a second component, designated as a whole by 8, which is threadedly connected to a head piece 18 which in which the first bag part 4 carrying the gripper means is arranged. The first component comprises or forms an annular sleeve 10 generally resembling a tube and provided with two and two slots 12 so that at the front end of the sleeve there are two inner surfaces on which the sleeve has less wind force; The reasons for this design are discussed in more detail below. The outer surface of the socket 10 can be knurled or otherwise roughened so that it can be easily grasped and manipulated by the user with the aid of the thumb and forefinger. The bush 10 is provided with two openings 16 which make it possible to fasten the head piece 18 in the axial bore 20 of the bush 10; the openings 16 are opposite the end 14 of the pipe connector, which receives the pipe to be connected, along the axis of the pipe connector

109884/1302

offset a small distance inwards. According to FIG. 1, the end section of the socket facing away from the inlet 14 is designed so that its inner diameter is larger than would be required to receive the head piece 18, so that this end section delimits a recess for receiving a SOder to be described, while the inner diameter of the bushing 10 in the region of the inlet 14 is chosen so that this part of the bushing can receive the head piece 18 which is axially displaceable therein the outer surface of an ear connection which is inserted into the inlet 14 of the ear connector cannot cooperate. According to FIG 26 aes head piece is provided with an internal thread, so that the second component 8 with the help of a thread absch can be screwed into the head piece. 8 head piece 18 also has two diametrically opposite, axially extending slots 28 which are dimensioned so that they can cooperate with guide pins 30 which also protrude through the openings 16 of the socket. The already mentioned gripper means 6, which are formed in the shape of two holding jaws 32 and each have a semicircular shape, are freely movable in the bore 24 of the head piece or the lynx 18, the inner surfaces of the two licltebacken are with an internal thread 34, and both jaws have annular projections 36 on their outside which delimit a guide surface 38 with which rolling or sliding components, for example bearing balls 40, work together. After the assembly of the horn connector, the la ^ er balls 40 can of course move between the projections 36 of the holding jaws 32 along the running surface 38 and in contact with the inner surface of the bushing 11, in particular in contact with the inner surfaces of the slots 12. In the closed position, ie the ih position

109884/1302

of the ear connector, the holding jaws 32 are in the circumferential direction thereby held at a distance from each other that opposing pins 30 are provided by a Angular distance of 180 ° are separated and each so far-after protrude inside that they work together with the rear jaws. When the tube connector is brought into its holding position shown in FIG is, the balls 40 move out of the slots 12 inward to be in the area of the fcing surface 38 to be supported on the holding jaws 32. This will be the rear jaws of the it-pipe connector in their closed position held. If, on the other hand, the bush 10 is moved backwards, i.e. away from the entry opening 14, the balls 4-0 fall into the slots 12 so that they enable the holding jaws 32 to move outward into their open position; the axial path of movement of the socket 10 is limited by the length of the slots 28 of the head piece 18.

A guide ring 42 is arranged near the holding jaws 32, which lies in a recess 44 of the head piece 18 and is thereby held in contact with the head piece in that the head piece in threaded connection with the second component 8 stands. .tSine spring 46, which is in the recess 47 between the Bushing 10 and the second component 8 is arranged, the bushing 10 and thus also the tube connector spans in xachtung the gripping or closed position shown in Fig. 1, in the embodiment described here, the second causes Beuteil 8 in a manner yet to be explained that the connection between the i.ohrverbinders and the connecting piece of the device to be tested is sealed to the outside. In the second B uteil 8 a Iiruckstück 50 is mounted, the one generally cylindrical in shape and provided with a stepped through bore; a first section this bore receives a sealing element 54, which from consists of a jilastomeric material or a similar material, the use of · neoprene is preferred;

fills
this! sealing element χα the bore sab cut 52 des

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Pressure piece. In the case of the it-pipe connector according to the invention, the free probe of the pipe connection of the device to be tested is brought into contact with the outer end face 56 of the clearing element 54. In order to ensure a perfect seal and to prevent the escape of the fluid along the threaded connection between the second brood part 8 and the head piece 18, this is. ! »Back piece 50 is provided on its outside with a king groove 58 which contains an O-ring or another sealing ring 60. A flow channel extends through the sealing element 54 and the pressure piece 50, so that a connection can be made to an inlet 62 to which the test device can be connected. uernit the pressure piece 50 assumes its front position when the iiohrverbinders is connected to a pipe or a connection piece, the pressure piece 50 is near its rear end with a shoulder 64- with which a spring 66 works together, which is on a inner shoulder 68 of the second bag part ε 8 is supported. This arrangement ensures that the sealing surface 56 of the sealing element ^ A always rests on the adjacent end of the connection piece of the device to be tested. When "but which is shown in FIG. 3 only fragmentarily indicated to be tested ridge 70 provided with a threaded socket 72 which üaaelventil receives a 74, it is necessary to provide a valve opening part or an actuating pin 76 which uptbohrung in the Hi mounted the thrust member 50 and whose end 78 having a smaller diameter (FIG. 6) extends in the direction of the interior of the threaded connector 72 so that it can actuate the valve needle, not shown, of the valve 74. For this purpose, the valve opening part 76 is supported on a spring 80 which is arranged in a recess in the second component 8. An inner bore section 84 of the component 8 leads to the internally threaded inlet 62, which enables the test piece to be tested Device 70 to supply a pressurized fluid.

109884/1302

213A732

To use the pipe connector according to the invention, it is only necessary to pull back the socket 10, whereby the two holding jaws 32 are opened so that the pipe connector can be placed on the connecting piece. 72 of the device to be tested can be pushed on. Here, the ear connector is brought into the correct position when the free end of the connecting piece 72 comes to rest on the guide ring 42, so that the end face 56 of the sealing element 54 with the Rcnä. the opening of the connecting piece 72 cooperates. At the same time, the needle of the valve 74 is pressed inward by the pin 76 or its thinner section 78 in order to open the needle valve. The actuating sleeve 10 is now released, whereupon the holding jaws 52 are pressed inwardly by the springs 4-0 in the manner already described and brought into their closed or gripping position. The threaded surfaces 34 of the holding jaws 32 firmly engage in the turns of the external thread of the connection piece 72. The pipe connector can now be connected to a pressure medium source or another test device via the inlet 62, if a pressure medium is supplied, this pressure acts on the pressure piece 50, so that the sealing effect of the sealing element 54 between the pipe connector and the pressure medium source is intensified. After the testing of the W device to be tested, the actuating sleeve 10 is brought into its open position, whereupon the pipe connector can be separated from the connecting piece 72.

ij'ig. 4 shows a further embodiment of an it-pipe connector according to the invention. Since essentially all of the main components in this second embodiment are the same as those used in the embodiment just described, and since the mode of operation is the same in both embodiments, only the differences between the two embodiments will be discussed below. Around. To facilitate the actuation of the outer socket 10 ', one of the guide pins 3O ^{1 is} extended outwards so that

109884/1302

it protrudes from the outer surface of the socket 10 '. A handle 100 is attached to the outer cortex of the pin JO ¹ so that the pin can be grasped by hand in order to move the socket 10 * axially. Since no needle valve is built into the connecting piece of the devices to be tested in this Pail, the actuating pin 76 and the peder 80 which biases it, which in the embodiment according to FIG. 1 are provided. Furthermore, since the connection piece of the device to be tested is not provided with an external thread, the holding jaws 32 'can be provided on their inside with a sleeve-shaped insert 102 made of an elastomer material, which has a high coefficient of heat, so that a sufficient holding force on a connection piece with a smooth Surface can be applied. The two halves of the elastic bush 102 can be connected directly to the associated inner surfaces of the holding jaws 32 '. As mentioned, the operation of the pipe connector according to Pig. 4 is the same as that of the first-described embodiment.

According to the above description, the invention thus provides a pipe connector which is easy to handle, and which makes it possible to quickly establish a connection between a device to be tested and a test facility.

Expectations

109884/1302

Claims (1)

- ίο - Δ Η PROVERBS Λ.J Jiohr connector, marked by Ln the first component (4), the holding means (6) for gripping wears one end of a liohr, as well as one on the first part attached second component (8), the sealing means P &? 4 ·) for sealing the inserted into the pipe connector Bears the end of a tube, the holding means relative to the second bag part are radially displaceable and mounted so that they are in a holding position in relation to a kohr introduced into them or can be brought into a release position, wherein the first and the second component by an inner Flow connection are connected, and wherein the second component inlet means (62) for connection to a source of fluid having. 2. Eohr connector according to claim 1, characterized in that g e k e η η, ate the holding means (6) normally in k are biased towards their holding position. 3. Ear connector according to claim 2, characterized in that the first component has an outer socket (10} 10 ·) includes, in which a head piece (18) is mounted, the is secured by diametrically opposite guide pins (30; 30 ') which extend radially from the socket extend inward and protrude through axial slots (28) of the head piece which are aligned with them. 4. Kohrconnectors according to claim 3 $ characterized in that the holding means have two holding jaws (32} 32 ') by the guide pins (30j 30') opposite the head piece (18) are held in place. 109884/1302 21 3A732 5 x Eohrverbinder according to claim 4, characterized in that the guide pins (30; 50 ') project so far inward that the two holding jaws (32; 32') held in the U _m circumferential direction at a distance from one another, that the inner surface the outer bushing (10; 10 ') is provided with recesses, which form guides (12) that the Iialtebacken are provided on their outside with a flat ($ 8) to a ball (40) between the holding jaws and the to hold the head piece (18), and that the head piece is provided with an opening for receiving the ball, so that the aforementioned parts cooperate when the bushing is moved axially. 6. Ixohrverbinders according to claim 5, characterized in that a plurality of balls (40) are provided, and that these balls are supported on the inner surface of the outer component (10) and have the effect that the two Eeltebacken (32j 32 ') brought into their hay position or their release position will. 7. Cohr connector according to claim 6, characterized in that at least one of the guide ^{pins (30 1} ) protrudes outward beyond the outer surface of the dfci socket (10 ') in order to facilitate the handling of the socket. 8. Lohr connector according to claim 6, characterized in that the second component (8) by a threaded connection is connected to the head piece (18), and that the head piece and the second component work together, to hold the two jaws (32; 32 ') in their position. 9. Kohrverbinders according to claim 8, characterized in that near the EUltebacken (32; 32 ') a stop part (42) is arranged, and that the second component (8) has an outer surface, which together with the inner surface the socket (10) delimits a recess (47) in which spring means (46) are arranged, which the socket normally 109884/1302 ill xi.ich.tunp to an outer position in order to thereby Bring the Li. It corners into their holding position. 10, screw connector according to claim 9 _5, characterized in that the second component (8) has a first bore in which the sealing means for sealing an inserted pipe are arranged, that these sealing means comprise a pressure piece (3> 0), which is slidably guided in this bore, and that the pressure piece establishes a connection to the inlet (62) which can be closed to a source of pressure medium. 11c ear connector according to claim 10, characterized in that g t k e η η iseichnet that the outer y_, nde of the original (50) carries a clearing element (5 ^ 0 made of a blastomer material, the one with the open -c-nde to be sealed into the xvohr connector imported kolirs cooperates » 12. li.ohrverbi.nder according to claim 11, characterized geke η η ~ ζ eich η et that as Bruckstück (i.0) dui'Ch a i ^ eder (bO) in seal on the input (14) of the mentioned bore nehe the Loltebacken (32;? 2 ') is pretensioned. 1Y. Lohrconnectors according to, ^ ,. nspruch 12, άυ through gcke u η P ε eich η et, dcß the pressure piece (i? 0) carries a ^^ opening pin (76), which by an F of (BO) against that pressure s tu clv is biased. 1 ^ i-. xiohrverbinaer according to claim 11, dadurcli ge kenn-. ζ e .I η et that the inner surfaces (yO of the two i;.. ltebacken (> -2) are provided thread passages by G, so that they introduced the into the tube joint, hands with externally threaded ^ a i to be tested, ear detect can. 15 · Kohrconnectors according to claim 12, characterized in that gc ko η η ~ "ejch π er t, del, the Innc-nf smile dt; r Ii; It ι buck (. ■ <"') with AlHJ.ichtun; i'J ', vln η> :. "iL." ..) nuv- oiiHH .Yes: toi; ii him t.trirJ vorr-t i ■ < η BAD ORiGiNAL L eersei f e