RU80212U1 - QUICK DISCONNECT PIPE CONNECTION - Google Patents

Abstract

The invention relates to devices for connecting pipes and more specifically relates to a quick-connect pipe connection, which comprises a housing equipped with a mounting tip and an internal axial step socket for entering the end of the pipeline, which has an annular collar at some distance from the pipeline edge and accommodates sealing and supporting elements, as well as locking mechanism. The locking mechanism is made in the form of a collet lock and a lock, the collet lock is installed in the output stage of the housing socket, has a tubular shape and is provided with a stop wall and several figured, collet petals extending cantilever from the stop wall in the axial direction, having perpendicular to the body axis from the outside lamellar protrusions included in reciprocally made cutouts in the housing for holding in the housing of the collet lock in the axial direction, while the ends of the petals have bevel, and the shape of their inner surface corresponds to the shape of the surface of the collar of the pipeline, and the profile of part of its outer wall, the collet lock lock is made in the form of a cylindrical sleeve covering the outer wall of the housing with the possibility of movement in the axial direction, while the lock is provided with at least one perpendicular to to the axis of the housing by an elastic petal element, which is able to deform with the ability to preserve shape memory under the influence of the applied force As regards the housing axis, through the cutter sleeve there are through cutouts for mating plate protrusions on the petals of the collet latch, while in the locked position the lock contacts through cutouts located perpendicular to the axis of the sleeve with hooks, which are placed on longitudinal guides mounted on the console mounted on the housing and made for one with the body on its outer wall. Basically, a utility model can be used in the fuel equipment of a car. 1 n and 1 s. p.p. f-ly, 4 ill.

Description

The utility model relates to devices for connecting pipes and more specifically relates to quick-connect pipe connections.

Known quick-disconnect pipe connections of various types, representing a connection of a rigid pipe with a tip, providing a coaxial hermetic connection of two pipes transporting a liquid such as fuel. Such compounds are presented, for example, in the following patent information sources:

- UK patent No. 2339455, IPC7 F16L 37/38, published 01/26/2000;

- GDR patent No. 288443, IPC5 F16L 37/16, published on 10.27.1983;

- Japan patent No. 3079813, IPC7 F16L 37/084, published 04.04.1991;

- Chinese patent No. 1064534, IPC7 F16L 33/22, published September 16, 1992;

- US patent No. 5249830, IPC7 F16L 37/08, published 05.10.1993;

- Polish patent No. 294381, IPC7 F16L 37/12, published 02.11.1992;

- French patent No. 2707727, IPC7 F16L 37/088, published 01/20/1995;

- Slovenian patent No. 651198T, IPC7 F16L 37/084, published on 02.29.2000;

- French patent No. 2770889, IPC7 F16L 37/088, published on 05/14/1999;

- patent WO 0001975, IPC7 F16L 37/084, published January 13, 2000;

- US patent No. 6481758, IPC7 F16L 33/00, published November 19, 2002;

- German patent No. 6010825, IPC7 F16L 37/084, published December 22, 2005;

- US patent No. 2007709972, IPC8 F16L 37/084, published March 15, 2007;

- patent EP 0079274, IPC7 F16L 37/22, published 05/18/1983;

- US patent No. 5028080, IPC5 F16L 37/10, published 02.07.1991;

- UK patent No. 2051283, IPC3 F16L 37/08, published 01/14/1981;

- US patent No. 4915421, IPC4 F16L 37/12, published 04/10/1990;

- French patent No. 2845148, IPC7 F16L 13/02, published 02.04.2004,

A quick-disconnect pipe connection is known in which the pipe is able to be inserted into the nozzle and has an annular thickening separated from its end, while the nozzle has an internal groove designed to hold at least one annular seal and provided in the area which, when the tip is mounted on the pipe, opposite the pipe zone located between its end and the bulge, and the tip contains a locking body, including locking means, elastically bent in the radial direction between Proposition free state and the opening and closing positions (FR, application №9305558, cl. F16L 37/00, 1993).

The locking means in the locking position take an intermediate position between the free position and the opening position, in which they rely on the thickening of the pipe from the side opposite to its end.

The known compound is satisfactory in technical terms. However, removing the pipe from the tip after locking requires the use of a special tool that must be inserted between the pipe and the elastic locking means. This operation is quite thin, requires skill and can only be successfully carried out provided that the space around the pipe and connection is sufficient to enable the use of the tool.

In Russian patent No. 2100684, IPC6 F16L 37/00, published December 27, 1997, an improvement is described of the quick-connect pipe connection discussed above so that the operation of removing the pipe from the tip does not require the use of additional tools.

The technical result in this case is achieved due to the fact that in the quick-connect pipe connection in which the pipe is able to be inserted into the tip and has an annular thickening separated from its end, while the tip has an internal groove designed to hold at least one o-ring and provided in an area that,

when the tip is mounted on the pipe, it is opposite the pipe zone located between its end and the bulge, and the tip contains a locking member including locking means that are elastically bent radially between the free state and the opening and closing positions, according to the invention, the outer surface of the tip has the first cylindrical part, at the end of which on the input side of the tip there is an axial stop means, and the second cylindrical part located axially between the means of the stop and the input of the tip, a locking member including a ring configured to support the axial stop means, and a locking means in the form of at least one locking tab extending from the ring to the input of the tip and including a first part connected to ring and having a length of at least equal to the length of the second cylindrical part of the tip, and the second part, conjugated with the first part of the foot and made in the form of intersecting at an angle sections, of which the section is from the input side of the tip there is a front plane inclined inward and a transverse slit is formed between the sections, the axial dimension of which is at least equal to the axial size of the bulge, and the distance from the tip axis in the free state of the locking tab is less than the bulge radius, with contact the tip, means for translating the locking tab into its opening position, in which the distance from the slot to the axis of the tip is at least equal to the radius of thickening of the pipe.

Known quick-disconnect device for detachable connection of pipelines, Russian patent No. 2076260, IPC6 F16L 37/10, published 03/27/1997, containing a housing with a socket for the entrance of the end of the tube having an annular collar at some distance from the edge of the tube installed in the housing of the o-ring for radial sealing of the tube with the housing, a rotating sleeve with an axial locking mechanism of the inserted tube and an engagement mechanism, characterized in that the engagement mechanism consists of at least two cams with the possibility of radial movement relative to the axis of connection, each of the cams is made with at least one guide shoulder included in the groove made in the housing, on the cam surface covering the shoulder of the inserted tube, a shaped cutout repeating the profile is made

said collar, and on the opposite side of the cam, a groove is made or cut to install a spring ring holding the cams facing curly cuts towards each other, and on the opposite side of the cam guide collar a chamfer is made, paired with a curved cutout, while the locking mechanism consists of a clutch located freely with the possibility of rotation on the body and made in the form of a cylinder with an end collar for axial fixation from one end and a wall with a window for the passage of the tube and feet with protrusions facing the cams from the other end, moreover, a socket is made on the outer cylindrical surface of the housing, and at least one boss is included in this socket on the inner surface of the coupling cylinder.

From Russian patent No. 2283452, IPC F16L 37/00, published September 10, 2006, a piping quick disconnect device is known which consists of two half-couplings connected by means of a ball lock, hermetically connected to pipelines, each of which contains a valve seat and a stop valve located in the axial direction a valve with a sealing element, moreover, the valve heads in the connected state of the coupling halves abut one another, providing unlocking of the valves, characterized in that two additional integral valves, each of which has a diameter smaller than the diameter of the shutoff valve, and is equipped with an unsealed plunger, with additional valves located coaxially inside the shutoff valves, and each plunger abuts against the head or ball of the additional valve with one end and protrudes from the shutter head by an amount exceeding half the size of the maximum movement of the additional valve.

As a prototype, a quick-disconnect device for connecting pipelines was described, described in Russian patent No. 2084747, IPC6 F16L 37/00, published July 20, 1997, containing a socket with a socket for entering the end of the pipeline, which has an annular collar installed at some distance from the edge of the pipeline in the socket, an annular seal for radial sealing of the pipeline with the socket, a support ring holding the end of the pipe inserted into the socket and a clip in the socket, characterized in that the clip is located in opposite relative but each other grooves of the bell, made perpendicular to the axis of the bell and

having in this direction a cross-section in the form of two segments facing with radii to the axis of the socket, the clamp having a U-shape repeats the configuration of the grooves in the perpendicular direction to the axis of the socket, and in the parallel direction with the axis of the socket, the edges of the grooves distant from the end of the socket made obliquely to the axis of the bell.

The considered quick-disconnect device for connecting pipelines consists of the minimum required number of parts that can be manufactured on universal equipment, with acceptable tolerances, using simple equipment for mass production of the connection, the design of which allows minimizing the complexity of manufacturing and assembly of the connection, provides quick and reliable pipe connection without any tools. However, as shown by the practice of operating the device described in the prototype, the tight interaction of its structural elements, under the influence of vibration loads generated mainly by the power unit of the car, is violated, which leads to a decrease in the durability and reliability of the device.

The technical result of the claimed utility model is to significantly increase the vibration resistance of the design of the quick disconnect device for detachable connections, in particular, fuel pipelines, increase its durability and reliability.

The technical result is achieved due to the fact that in the known quick-disconnect pipe connection comprising a housing equipped with a mounting tip and an internal axial step socket for entering the end of the pipeline, which has an annular collar at some distance from the edge of the pipeline and accommodates sealing and supporting elements, as well as a locking mechanism, the latter is made in the form of a collet lock and a lock, the collet lock is installed in the output stage of the housing socket, has a tubular shape and is equipped with a thrust wall with several curly, collet-shaped petals extending cantilever from the thrust wall in the axial direction, having laminar protrusions perpendicularly located relative to the housing axis, which are included in reciprocal cutouts in the housing for holding the collet lock in the axial direction in the housing, while the ends of the petals have bevel, and the shape of their inner surface corresponds to the shape of the surface of the collar of the pipeline, and the profile of part of its outer wall, the collet lock lock is made

in the form of a cylindrical sleeve, covering the outer wall of the housing with the possibility of movement in the axial direction, while the lock is provided with at least one resilient petal element perpendicular to the housing axis, capable of being deformed with the ability to preserve shape memory under the influence of the force applied to it in the direction the axis of the housing, in the bushing of the bollard, through cuts are made under the reciprocal plate protrusions on the petals of the collet retainer, while in the fixed polo In this case, the blocker is in contact by means of through cutouts located perpendicular to the axis of the sleeve with hooks, which are placed on longitudinal guides mounted on a cantilever mounted on the housing and made integrally with the housing on its outer wall.

The nest in the housing is made in three stages, while in the middle stage there are sealing and supporting elements, including at least one sealing and at least one retaining ring.

Such structural changes, in comparison with the prototype of the utility model, are achieved by the method of intuitive logical analysis of the problem, indicated by the analysis of the prior art presented above, analytical work on the formation of the best constructive solution empirically and subsequent experiments with the experimental samples of the inventive device thus obtained. The design of the locking mechanism in the claimed utility model limits the angular movement of the tube by tightly fixing the collar of the tube with a collet lock installed in the connection housing, which in turn is locked by a lock, which makes it possible to use this connection in vibration-loaded nodes kinematically connected to the power unit, without additional design solutions designed to reduce vibration loads on the connection in dynamics, while maintaining high reliability for long operation.

Comparison of scientific, technical and patent documentation on the priority date in the main and related sections of the MKI shows that the set of essential features of the claimed solution was not previously known, therefore, it meets the patentability condition of “novelty”.

The proposed technical solution is industrially applicable, because can be manufactured industrially, efficiently, feasibly and reproducibly, therefore, meets the condition of patentability

"Industrial applicability." At the same time, a useful model can be implemented in industrial production using simple technological equipment and modern materials.

Other features and advantages of the claimed utility model will become apparent from the drawings and the following detailed description, where:

Figure 1 shows an exploded view of the elements of the quick-connect pipe connection;

Figure 2 shows a quick disconnect pipe connection in the working (fixed) state;

Figure 3 shows a quick-disconnect pipe connection in the unlocked state;

Figure 4 shows the order of bringing the connection into working condition.

The quick disconnect pipe connection comprises a housing 1 provided with a mounting tip 2 and an internal axial step socket 3 for entering the end of the pipeline 4, which has an annular collar 5 at some distance from the edge of the pipeline and accommodates sealing 6 and supporting 7 elements, as well as a locking mechanism for the connector. The locking mechanism is made in the form of a collet lock 8 and a lock 9.

The collet lock 8 is installed in the output stage of the socket 3 of the housing 1, has a tubular shape and is equipped with a retaining wall 10 and several curly collet petals 11 extending cantilever from the retaining wall in the axial direction, having laminar protrusions 12 perpendicular to the housing axis and entering in response, cutouts 13 in the housing 1 for holding in the housing of the collet lock 8 in the axial direction. The ends of the petals have a bevel 14, and the shape of their inner surface corresponds to the shape of the surface of the annular shoulder 5 of the pipeline, and the profile of part of its outer wall. The lock 9 of the collet lock 8 is made in the form of a cylindrical sleeve 15, covering the outer wall of the housing 1 with the possibility of movement in the axial direction. The lock 9 is provided with at least one elastic flap element 16 perpendicular to the housing axis, which is able to deform with the ability to preserve shape memory under the influence of the force applied to it towards the housing axis. In the sleeve 15 of the lock 9 are made through cut-outs 25 under the reciprocal plate protrusions 12 on the petals 11 of the collet latch 8. In

in a fixed position, the lock is in contact with through cutouts 17 located perpendicular to the axis of the sleeve with hooks 18, which are mounted on longitudinal guides 19 mounted on a cantilever mounted on the housing 1 and made integrally with the housing 1 on its outer wall.

The socket 3 in the housing 1 is made three-stage, while in the middle stage 22 there are sealing 6 and supporting 7 elements, including at least one sealing 23 and at least one retaining ring 24.

The order of fixation and release of the pipeline 4 is clearly illustrated in figure 2, 3 and 4.

In the working, locked state, see figure 2, the collet lock 8 is locked. This creates a rigid connection (touch) between the pipe 4, the collet lock 8, the housing 1 and the lock 9 of the collet lock 8. This leads to the absence of free play between the pipe 4 and the housing 1, and ensuring their coaxial connection. Those. with such a kinematic arrangement of the connection elements, even a slight placement of the axes of the pipeline 4 and the housing 1 becomes impossible. It is for this reason that there is no need to use special damping devices when installing pipelines.

To disconnect the connection, it is sufficient to exert a force -P- (insignificant in magnitude) on the end face of the flap element 16 in the direction shown by the arrow. In this case, the hook 18 is released, and the lock 9 is moved all the way, in the direction shown by the arrow -A-. The connection in this position is shown in figure 3. In this position, pipe 4 can be mounted or removed.

To install the pipe 4, see figure 4, you must apply the axial force P ₁ in the direction shown by the arrow, while the petals 11 of the collet latch engage with the annular shoulder 5 of the pipe 4, see additionally figure 3. With further axial movement of the lock 9, the collet lock 8 is blocked, as shown in Fig.2.

In fact, the appreciation of the construction, which appears to be compared with the prototype, is completely compensated by the absence of the need to use special damping elements in the fuel system, for example, such as special damping holders made of expensive elastic material,

which are described in detail, for example, in the application DE 10 2004 044 512 A1, IPC8 B60R 13/08, published March 30, 2006.

Ultimately, the application of the claimed utility model allows to increase the consumer properties of a vehicle, in particular a passenger car, and to increase its competitiveness, both in the domestic and foreign markets, by significantly increasing the vibration resistance of the design of the quick-connect pipe connection, in particular, fuel pipelines.

Specific illustrations of the efficiency of use and implementation options of the claimed technical solution described above are by their nature only particular examples and do not limit the claims of the claimed utility model, the volume of which is determined by the utility model formula. For technical specialists working in this field of technology will become apparent other possible specific embodiments of the inventive device, which will be within the scope of the claims of this utility model.

Claims (2)

1. Quick disconnect pipe connection containing a housing equipped with a mounting tip and an internal axial step socket for entering the end of the pipeline, which has an annular collar at some distance from the edge of the pipeline and accommodates sealing and supporting elements, as well as a locking mechanism, characterized in that the locking mechanism is made in the form of a collet lock and a lock, the collet lock is installed in the output stage of the housing socket, has a tubular shape and is equipped with a thrust wall and several figured ones Collet petals that extend slightly away from the axial wall in the axial direction and have lamellar protrusions perpendicular to the housing axis and are included in reciprocal cutouts in the housing to hold the collet retainer in the axial direction, while the ends of the petals have a bevel and their shape the inner surface corresponds to the shape of the surface of the collar of the pipeline and the profile of part of its outer wall, the lock of the collet lock is made in the form of a cylindrical sleeve, cover her outer wall of the housing with the possibility of movement in the axial direction, while the lock is provided with at least one perpendicular to the axis of the housing elastic petal element that can be deformed with the ability to save shape memory under the influence of the force applied to it in the direction of the axis of the housing, in the sleeve through the cutter, through cuts are made under the reciprocal plate protrusions on the petals of the collet retainer, while in the locked position the lock is in contact th through recesses arranged perpendicular the axis of the sleeve, with hooks, which are arranged on the cantilever mounted longitudinal guide on the housing and integrally formed with the housing at its outer wall. 2. The quick-disconnect pipe connection according to claim 1, characterized in that the socket in the housing is three-stage, with sealing and supporting elements including at least one sealing ring and at least one retaining ring placed in the middle stage.