DE102007020344B4 - Quick release fitting assembly - Google Patents

Abstract

Quick connection arrangement (1) for a pressure and / or vacuum test of a component, with a through-flow with a test medium housing (2) having a connection (3) for supplying or discharging a test medium and a component connection (6) for a component to be tested and with an actuating device for sealing or decoupling a line connected to the component connection (6), wherein the component connection (6) delimits an axially movable connection pipe (7) with a through the housing (2) and a stop of the connection pipe (7) Receiving area (15) for at least one sealing element, wherein the connecting tube by the actuating device is movable such that the receiving area (15) is variable in terms of its axial length for clamping the sealing element, wherein the connecting tube (7) facing away from the end of the housing (2 ) Has a rotation axis (14) for a pivot lever (13) of the actuating device, characterized gekennz eichnet that the stop as a radially from the outer shell of the connecting pipe (7) projecting disc element (11) is formed, that the connection pipe end of the housing (2) has an annular abutment region (12) as the housing side boundary of the receiving area (15) and that as Sealing element at least one O-ring (10) between the stop and the connection pipe side end of the housing (2) for radial sealing is clamped, wherein the pivot lever (13) in operative connection with a in the housing (2) displaceable piston member (8), which is connected to the connecting pipe (7), wherein the connection pipe side end of the piston element (8) with a compression spring (9) is in operative connection, wherein the piston member (8) upon actuation of the pivot lever (13) is movable such that the receiving area (15 ) is axially expandable, and that the piston element (8) after actuation of the pivot lever (13) due to the spring force of the compression spring (9) automatically i n the initial position is movable back to axially shorten the receiving area (15) for compressing the sealing element, wherein the piston element (8) has a bore in which one end of the connecting pipe (7) is fixed, and wherein a connecting line (17) between the connection (3) for supplying or discharging the test medium and the connection pipe (7) in the interior of the housing (2) is provided.

Description

The present invention relates to a quick connection arrangement for a pressure and / or vacuum test of a component according to the closer defined in the preamble of claim 1. Art.

It is known that pressure and / or vacuum tests on components are carried out, for example, in gearbox and engine construction. For this purpose, a quick connection arrangement is required to connect the component to be tested with a supply source for applying a test medium.

For example, a quick-connect coupling, especially for smooth tubes for hydraulic or. pneumatic pressure or vacuum test, from the publication DE 297 13 797 U1 known. The quick-connect coupling comprises a connecting element, which can be expanded with an actuating device in the radial direction inwardly or outwardly, wherein the connecting element is acted upon on both sides by a ring wedge surface. The tubular housing has a threaded connection, to which a hose for test medium supply is connected. In addition to the connecting element for connecting the smooth tube, further components are required in the interior of the housing in order to allow the actuating device to act on the connecting element via the wedge-shaped surfaces for sealing the smooth tube connected to the housing.

In the known quick connector coupling a variety of components are required to allow the sealing of the connected pipe. In addition, there is the danger that damage to the sealing elements can occur due to the various segments with the wedge-shaped surfaces. Furthermore, there is the further disadvantage that due to the large number of components used, a considerable space is necessary to connect the known quick-connect coupling to a component.

If a screw is used as a connection for connecting the pipe, there is the disadvantage that the applied clamping force is dependent on the respective operator. In addition, a product-dependent torque support is necessary, which considerably limits the range of application of the quick-connect coupling. Furthermore, a two-handed operation is absolutely necessary, which is also disadvantageous.

From the DE 1940863 is another quick connector for the pressure test of a component known. For this purpose, the component connection for the component to be tested on a through-flow of the test medium connection pipe that is arranged to be axially displaceable in the housing of the quick-connect coupling. The connecting tube is displaced axially by means of a swivel lever mounted on the housing of the quick-release coupling. When moving the connection pipe, the connection pipe braces a sealing element arranged on the housing of the quick connection coupling with respect to the component to be tested.

Accordingly, the present invention seeks to propose a quick-connect coupling described above, which requires the smallest possible space and avoids damage to the sealing elements, and is universally applicable.

This object is achieved by the features of claim 1. Further advantageous embodiments emerge in particular from the dependent claims.

Accordingly, a quick connection arrangement is proposed for a pressure and / or vacuum test of a component, wherein the quick connection arrangement comprises a housing through which a test medium can flow, which has a connection for supplying or discharging a test medium and a component connection for a component to be tested. Furthermore, the quick connection arrangement comprises an actuating device for sealing or decoupling a line connected to the component connection. According to the invention, the component connection comprises an axially movable connection pipe or the like, which provides a receiving region limited by the housing and a stop of the connection pipe for at least one sealing element, wherein the connection pipe is movable by the actuating device such that the receiving region with respect to its axial length for bracing or Compression of the sealing element can be changed.

Thus, depending on whether the axial length of the receiving area is increased or decreased, a relaxation or compression of the sealing element can be achieved, so that the connected pipe is radially sealed by the sealing element. In this way, leakage of the test medium can be reliably prevented.

Consequently, with the quick-connection arrangement proposed according to the invention, a connection of a component to be tested to a supply source of the test medium can be implemented in the simplest manner with only a few components, since only the axial length of the receiving area on the connection pipe has to be changed.

The limitation of the axial length of the receiving area on the connecting pipe can be realized on the one hand by the housing and on the other hand by a stop on the connecting pipe. There are also other constructive limitations conceivable. However, the limitation by the housing and the connection pipe side stop is particularly advantageous because the housing is already present as a component and thus an otherwise additional component to limit the receiving area is saved.

As part of a development of the invention can be provided that a supply line for the test medium is preferably aligned at a right angle to the tubular housing. In this arrangement, the supply line can advantageously serve as a point or support for operating the pivot lever to ensure the simplest possible operation of the quick connector assembly according to the invention.

The swivel lever can be individually adapted to the component contours and the installation situation to ensure good handling.

In this exemplary arrangement possibility, there is the advantage that the sealing elements are clamped in the initial position by the spring force with a defined force and thus seal the pipeline. By selecting the height of the spring force, a predetermined overpressure can be adjusted. But there are also other arrangement options conceivable.

The present invention will be explained in more detail with reference to the drawing.

The sole figure of the invention shows a partially sectioned view of a possible embodiment of a quick connector assembly according to the invention.

The proposed quick connection arrangement 1 is used to connect a component to be tested, which is filled with a test media for overpressure or negative pressure test in gear and engine construction. For this purpose, the quick connection arrangement 1 an approximately tubular housing 2 on which can be flowed through with a test medium. On the case 2 is a connection 3 for supply or discharge of the test medium via a supply line 4 intended. At the supply line 4 is a connection piece in the embodiment shown 5 provided, on which a hose, not shown, is readily connectable, which is connected to a test medium supply source.

The connection 3 is so at one end of the housing 2 arranged that the housing 2 and the supply line 4 are arranged approximately at right angles to each other. At the other end of the case 2 is a component connection 6 provided to a component to be tested via a pipe, not shown, with the housing 2 connect to.

The component connection 6 includes a in the housing 2 axially movable connection pipe 7 , The connection pipe 7 is with a likewise in the housing 2 movable piston element 8th screwed. The piston element 8th is about one in the housing 2 provided compression spring 9 acted upon by a predetermined spring force, so that the piston element 8th in the starting position in the upper area of the housing 2 located.

The connection pipe 7 has a recording area 15 for a sealing element. The sealing element is in the embodiment shown here by two O-rings 10 educated. The recording area 15 is in the axial direction connection pipe side by a trained as a stop disc element 11 limited, which radially from the connection pipe 7 projects. The housing side is the recording area 15 through an approximately annular contact area 12 on the housing 2 limited.

At the top, the connecting pipe 7 opposite end of the housing 2 is a pivoting lever 13 arranged the actuator. The swivel lever 13 is about a rotation axis 14 on the housing 2 pivoted. By a dot-dash line is an operating state of the quick connector assembly according to the invention 1 indicated. This operating state is achieved by an operator by simultaneously gripping the pivot lever 13 and the supply line 4 the pivot lever 13 swings downwards. Due to the pivotal movement becomes the associated end of the piston member 8th through an outer part of a contact surface 16 of the pivot lever 13 and with that also with the piston element 8th connected connection pipe 7 against the spring force of the compression spring 9 moved downwards.

By the downward movement becomes the receiving area 9 on the connection pipe 7 for the O-rings 10 Enlarged, allowing a relaxation of the O-rings 10 he follows. In this state, a pipe not shown for supplying a component to be tested can be removed.

Once the pivot lever 13 Once again released by the operator, the connection pipe 7 with the piston element 8th due to the acting spring force of the compression spring 9 be moved upward, so that the starting position is reached again. This will make the recording area 15 on the connection pipe 7 shortened in the axial direction. As a result, the O-rings 10 be compressed and expand in the radial direction, so that a connected pipe is sealed accordingly.

In this initial position, the test medium on the at the port 3 connected supply line 4 through a connecting line 17 and the connecting pipe connected to it 7 flow into the component to be tested. The connection line 17 is fixed to the housing in the interior of the housing 2 arranged so that the piston element 8th with the connecting pipe 7 regardless of the connection line 17 is movable in the interior of the housing.

LIST OF REFERENCE NUMBERS

1

Quick release fitting assembly

2

casing

3

connection

4

supply

5

connector

6

component connection

7

connecting pipe

8th

piston element

9

compression spring

10

O-ring

11

disk element

12

plant area

13

pivoting lever

14

axis of rotation

15

reception area

16

contact surface

17

connecting line

Claims (3)

Quick connection arrangement ( 1 ) for a pressure and / or vacuum test of a component, with a through-flow with a test medium housing ( 2 ), which has a connection ( 3 ) for supplying or discharging a test medium and a component connection ( 6 ) for a component to be tested, and with an actuating device for sealing or decoupling one to the component connection ( 6 ), wherein the component connection ( 6 ) an axially movable connection pipe ( 7 ) with a through the housing ( 2 ) and a stop of the connecting pipe ( 7 ) limited recording area ( 15 ) for at least one sealing element, wherein the connecting tube is movable by the actuating device such that the receiving area ( 15 ) is variable in terms of its axial length for bracing the sealing element, wherein the connecting pipe ( 7 ) facing away from the end of the housing ( 2 ) a rotation axis ( 14 ) for a pivot lever ( 13 ) of the actuating device, characterized in that the stop as a radially from the outer jacket of the connecting pipe ( 7 ) projecting disc element ( 11 ) is formed, that the connection tube-side end of the housing ( 2 ) an annular abutment area ( 12 ) as the housing-side boundary of the receiving area ( 15 ) and that as a sealing element at least one O-ring ( 10 ) between the stop and the connection tube end of the housing ( 2 ) is clamped for radial sealing, wherein the pivot lever ( 13 ) in operative connection with a housing ( 2 ) displaceable piston element ( 8th ), which with the connecting pipe ( 7 ), wherein the connection tube side end of the piston element ( 8th ) with a compression spring ( 9 ) is in operative connection, wherein the piston element ( 8th ) when operating the pivoting lever ( 13 ) is movable such that the receiving area ( 15 ) is axially expandable, and that the piston element ( 8th ) after actuation of the pivoting lever ( 13 ) due to the spring force of the compression spring ( 9 ) is automatically moved back into the initial position to the receiving area ( 15 ) to compress axially to compress the sealing element, wherein the piston element ( 8th ) has a bore in which one end of the connecting pipe ( 7 ), and wherein a connecting line ( 17 ) between the connection ( 3 ) for the supply or discharge of the test medium and the connecting pipe ( 7 ) inside the housing ( 2 ) is provided. Quick connection arrangement according to claim 1, characterized in that the force acting on the sealing element pressing force by the compression spring ( 9 ) is adjustable. Quick connection arrangement according to claim 1 or 2, characterized in that one at the terminal ( 3 ) connected supply line ( 4 ) is aligned for feeding or discharging the test medium approximately at a right angle to the housing.

Images