KR20120002435U - Pipe connector - Google Patents

Abstract

This pipe connector not only facilitates the insertion of flexible pipes (such as PEX pipes), but also ensures the sealing of the sockets and the connection of the pipes under pressure to allow liquid to be injected and expanded into the pipes. The pipe connector comprises a socket body composed of a clamp ring, a tapered seat and an O-shaped sealing ring in order in the pipe insertion direction; When the pipe is inserted into the socket, the flange of the clamp ring is bent; When the liquid is injected into the pipe and pressurized to expand the pipe, the O-shaped sealing ring is compressed and expands in the axial direction, and then the O-shaped sealing ring disengages the taper sheet, thereby moving the clamp ring in the opposite direction to the pipe insertion. To push the lock, thereby locking the pipe.

Description

Pipe connector {PIPE CONNECTOR}

In accordance with 35 USC §119 and the Paris Convention Treaty of the United States, the present invention claims rights arising from Chinese patent application No. 201010296449.9, filed September 29, 2010, the content of which is Incorporated by reference in the specification.

The present invention relates to a pipe connector.

Pipes are one of the important installations used in the industry, and pipe connections such as sockets are important devices for connecting different pipes.

Well-known pipe connections today include threaded connections (corresponding to metal pipes) and heat welded joints (PP-R pipes and PE pipes). The threaded connection of the pipes is achieved by screwing the two pipes together using the internal thread of one pipe and the external thread of the other pipe and using a Teflon belt for sealing. The joints of the two pipes are melted and the two pipes are connected to each other in a molten state so that the joints form a sealed connection. However, the two connecting means described above are very complicated and the sealing quality is not good, and such connecting means can also cause inconvenience in maintenance.

In order to meet other requirements, improved pipe connection schemes and associated devices are expected. Chinese patent publication CN 1594954A discloses a socket for connecting a valve or tap with a gas pipe of small or medium size. The socket includes a T-joint and elbow at its connecting end to improve connection efficiency and to facilitate maintenance and exchange. However, this socket is only suitable for the connection of valves or taps with gas pipes of small or medium size.

Chinese patent publication CN 1257169A discloses a socket for pipe connection. The socket includes a first casing pipe surrounding the outer wall and a second casing pipe surrounding the outer wall of the first casing pipe. A fastening piece having a thread on its outer wall is arranged on the wall of the second casing pipe. The second casing pipe also includes a wheel and a spring acting on the fixing member. The left and right points of the spring fit tightly to the right end of the first casing pipe and the outer wall of the spacing piece, respectively. The first casing pipe includes a ramp on its outer wall. This invention simplifies mounting and dismounting operations, but increasing pressure will affect the sealing quality of the device.

Chinese patent publication CN 2428674Y discloses a socket for pipe connection. This socket is made of metal and is also suitable for connecting to PEX pipes. The socket includes a socket body, an O-shaped sealing ring, a taper seat, a clamp ring, a demounting ring, and a locking cap. The O type sealing ring, the tapered seat, the clamp ring, the movable taper sleeve, and the locking cap are disposed in the socket body in order. When the PEX pipe is inserted, it can pass through the movable taper sleeve, clamp ring, taper seat, O-shaped sealing ring to the pipe stop member A. Due to the elasticity of the teeth arranged on the clamp ring, these teeth can grip the pipe when the pipe is inserted into the socket. In addition, due to the elasticity of the O-shaped sealing ring, the O-shaped sealing ring can form a sealing connection to the pipe as the pipe passes through. Finally, the locking cap is used to secure the socket to prevent the components from coming off.

To remove the PEX pipe from the socket, a separation ring may be used to push the teeth of the clamp ring holding the outer wall of the pipe by pushing the separation ring towards the pipe inlet to separate the tooth from the outer wall of the pipe.

Chinese patent publication CN 201096247Y discloses a pipe quick connect socket comprising an O-shaped sealing ring, a tapered seat, a clamp ring, a separating ring, and a locking cap in order. An O-shaped sealing ring shoulder is provided with a cannelure to allow liquid to pass therethrough. This structure allows the average pressure of the O type sealing ring to act on the O type sealing ring shoulder. As the pressure increases, the sealing of the socket becomes better. Therefore, this invention can improve the sealing of a socket.

The prior art described above includes a fixed clamp ring between the tapered seat and the locking cap, whereby the teeth of the clamp ring can strongly grip the outer wall of the pipe to restrain the insertion of the PEX pipe. Once the PEX pipe is fully inserted into the socket, the PEX pipe cannot move in the socket, but while the teeth are inserted, the teeth can strongly inhibit the insertion of the PEX pipe, which makes the insertion of the pipe more difficult.

In view of the above problems, the object of the present invention is not only to allow flexible pipes (for example PEX pipes) to be easily inserted, but also to seal the sockets when liquid is injected into the pipes and the pipes are pressurized to expand. It is to provide a pipe connector that can ensure the quality and maintain the pipe connection state, and also to provide a pipe connector used for the liquid supply.

In order to achieve the above object, according to an embodiment of the present invention, in the insertion direction of the pipe, a locking cap for preventing the components from coming off the socket; A locking cap stop member disposed at an end of the socket body into which the pipe is inserted to prevent the locking cap from being pulled out; A demounting ring for unlocking the pipe; A clamp ring comprising a flange and a plurality of teeth disposed on the flange and fixed to an outer wall of the pipe; A taper seat in movable connection with the inner wall of the socket body to stop the clamp ring from moving in the pipe insertion direction; A taper seat shoulder disposed on the inner wall of the socket body to stop the taper seat from moving in the pipe insertion direction, wherein the arrangement of the taper seat shoulder and the locking cap is between the free axis of the clamp ring and the taper seat A tapered seat shoulder to allow directional movement; An O-shaped sealing ring forming a sealing connection with the outer wall of the pipe; An O-shaped sealing ring shoulder disposed on an inner wall of the socket body to stop the O-shaped sealing ring from moving in the pipe insertion direction; A pipe connector is provided having a socket body comprising a pipe stop member disposed on an inner wall of the socket body to stop the pipe from moving in the pipe insertion direction. When the pipe is inserted into the socket, the flange of the clamp ring is bent; When liquid is introduced into the pipe and the pipe is pressurized, the O-shaped sealing ring is compressed and expands in the axial direction, and then the O-shaped sealing ring pulls the taper sheet, thereby inserting the clamp ring into the pipe. Push to move in the opposite direction, thus locking the pipe.

In one aspect of this embodiment, the socket includes an O-shaped sealing ring segment disposed between the O-shaped sealing ring shoulder and the tapered seat shoulder.

In one aspect of the present embodiment, at the end of the O-shaped sealing ring shoulder near the O-shaped sealing ring, a step in a sealed movable connection with the O-shaped sealing ring segment is disposed, The staircase is always kept in sealingly movable connection with the O-shaped sealing ring segment when the taper sheet is pushed to move in the direction opposite the pipe insertion.

In one aspect of this embodiment, the gap between the O-shaped sealing ring shoulder and the locking cap is such that the pipe is expanded so that liquid is injected into the pipe to compress the O-shaped sealing ring to extend axially. When under pressure, the O-shaped sealing ring allows the clamp ring to slide against the locking cap through the tapered seat.

In one aspect of this embodiment, the gap between the O-shaped sealing ring shoulder and the tapered sheet is no narrower than the axial width of the O-shaped sealing ring compressed when the pipe passes through the O-shaped sealing ring.

In one aspect of this embodiment, the inner diameter of the tooth in the initial state is smaller than the outer diameter of the pipe, the inner diameter of the O-shaped sealing ring is smaller than the outer diameter of the pipe, and The inner diameter is larger than the outer diameter of the pipe.

In one aspect of this embodiment, the tapered sheet is annular and includes a lamp corresponding to the teeth.

In one aspect of this embodiment, the socket comprises: a locking cap shoulder disposed on an inner wall of the socket body between the clamp ring and the locking cap to stop the locking cap from moving in the pipe insertion direction; And a convex part formed on an outer wall of the separation ring to interact with the locking cap to prevent the separation ring from falling out of the socket.

In one aspect of this embodiment, the separating ring has a sharp angle at an end of the separating ring adjacent to the clamp ring.

1. The socket has a socket body comprising a clamp ring, a tapered sheet, and an O-shaped sealing ring in the direction of insertion of the pipe; When the pipe is inserted into the socket, the flange disposed on the clamp ring is bent; Compared to clamp rings with flanges that do not bend when the pipe is inserted, the grabbing force of the teeth of the clamp rings with bent flanges acting on the pipes is less than that of clamp rings with flanges not bent. Thus, the bending of this flange allows for easy pipe insertion. When liquid is injected into the pipe and pressurized to expand the pipe, the O-shaped sealing ring is compressed to expand in the axial direction, and the O-shaped sealing ring then taps the taper sheet, thereby releasing the clamp ring in the opposite direction to the pipe insertion. Pushed to move, with the help of the taper seat pushing force the flange recovers from its bent state, which can increase the grip of the teeth of the clamp ring acting on the outer wall of the pipe, which locks the pipe in the socket It ensures the sealing of the socket and maintains the pipe connection.

 2. The socket body includes an O type sealing ring segment disposed between the O type sealing ring shoulder and the tapered seat shoulder, and at the end of the O type sealing ring shoulder close to the O type sealing ring, the O type sealing ring segment and the seal move. A stepped portion in the connected state is disposed; This step is maintained in sealingly movable connection with the O-shaped sealing ring segment when the taper sheet is pushed to move in the direction opposite to the pipe insertion. This structure can effectively ensure the sealing of the socket when the O-shaped sealing ring is pushed to move the tapered sheet in the direction opposite to the pipe insertion.

3. The gap between the O-shaped sealing ring shoulder and the locking cap is injected into the pipe and pressurized to expand the pipe, which in turn compresses the O-shaped sealing ring to expand axially. This taper seat allows the clamp ring to be pushed against the locking cap. This structure enhances the holding of the pipe connection by increasing the gripping force of the teeth acting on the outer wall of the pipe when the clamp ring is pushed against the locking cap and preventing the pipe from falling out of the socket.

4. If the gap between the O-shaped sealing ring shoulder and the taper seat is wider than the axial width of the O-shaped sealing ring compressed when the pipe is inserted into the socket, the clamp when the O-shaped sealing ring is compressed and expands in the axial direction The O-shaped sealing ring does not come into contact with the tapered seat so that the ring does not push to move in the opposite direction to the pipe insertion, which does not increase the gripping force of the teeth of the clamp ring acting on the outer wall of the pipe to be inserted. Compression will not restrain the insertion of the pipe. If the gap between the O-shaped sealing ring shoulder and the tapered sheet is as wide as the axial width of the O-shaped sealing ring that is compressed when the pipe is inserted into the socket, the O-shaped sealing ring is only in contact with the tapered sheet, By not applying pressure, the clamp ring is not pushed to move in the direction opposite to the pipe insertion when the O-shaped sealing ring is compressed and expanded in the axial direction, which does not increase the holding force of the teeth of the clamp ring acting on the outer wall of the pipe to be inserted. By not compressing, the compression of the O-shaped sealing ring will not restrain the insertion of the pipe, and furthermore, this calculated gap between the O-shaped sealing ring shoulder and the taper seat will cause the liquid to be injected into the inserted pipe and the pressure to expand the pipe. The clamp ring by applying the pressure of the compressed O-shaped sealing ring to the tapered seat entirely due to the axial expansion on receiving Pipe insert is pushed to move in the opposite direction.

5. Since the inner diameter of the teeth in the initial state is smaller than the outer diameter of the pipe, the teeth of the clamp ring can grip the outer wall of the pipe. Since the inner diameter of the O-shaped sealing ring is smaller than the outer diameter of the pipe, the O-shaped sealing ring can form a sealing connection with the outer wall of the pipe, and since the inner diameter of the separating ring is larger than the outer diameter of the pipe, between the separation ring and the pipe There is enough clearance in the to allow the pipe to be inserted without being restrained.

6. The tapered sheet is annular and includes lamps corresponding to the teeth. This allows the teeth of the clamp ring to bend when pushed by the pipe to be inserted.

7. A separation ring with a sharp angle at the end of the separation ring proximate the O-shaped sealing ring ensures minimal contact with the teeth of the clamp ring.

Detailed description will be made below in connection with the accompanying drawings.

1 shows a pipe connector without a step in an initial state,
2 shows a pipe connector without a step after insertion of the pipe,
3 shows the pipe connector without the step after the liquid is injected into the pipe and pressurized to expand,
4 shows a pipe connector with a step in an initial state,
5 shows a pipe connector with a step after insertion of the pipe,
6 shows a preferred embodiment of a pipe connector.
FIG. 7 shows a preferred embodiment for a pipe connector after liquid is injected into the pipe and pressurized to expand.

Example 1

Referring to FIG. 1, the pipe connector includes a socket body 1. The socket body 1 has a locking cap for preventing components such as the separating ring 6, the clamp ring 4, the tapered seat 3 and the O-shaped sealing ring 2 from falling out in the direction of insertion of the pipe ( 5); A locking cap stop member 9 disposed at the end of the socket into which the pipe 13 is inserted to prevent the locking cap 5 from being pulled out; A separating ring 6 for unlocking the pipe 13; A clamp ring (4) comprising a flange (12) and a plurality of teeth (10) formed on the flange and fixed to an outer wall of the pipe (13); A taper seat 3 in movable connection with the inner wall of the socket body 1 to stop the clamp ring 4 from moving in the pipe insertion direction; Tapered seat shoulder 8 disposed on the inner wall of the socket body 1 to stop the taper seat 3 from moving in the pipe insertion direction, with the arrangement of the taper seat shoulder 8 and the locking cap 5 interposed therebetween. A tapered seat shoulder 8, which permits free axial movement of the clamp ring 4 and the tapered seat 3 in the case; An O-shaped sealing ring (2) forming a sealing connection with the outer wall of the pipe (13); An O-shaped sealing ring shoulder 7 disposed on the inner wall of the socket body 1 to stop the O-shaped sealing ring 2 from moving in the pipe insertion direction; The pipe stop member 11 is disposed on the inner wall of the socket body 1 to stop the pipe 13 from moving in the pipe insertion direction.

The gap between the O-shaped sealing ring shoulder 7 and the locking cap 5 enables the designed movement of the O-shaped sealing ring 2, the tapered seat 3 and the clamp ring 4, and liquid is injected into the pipe. When the pipe is pressurized to expand to push the O-shaped sealing ring 2 axially to expand, the O-shaped sealing ring 2 locks the clamp ring 4 through the taper seat 3 to the locking cap 5. To be able to push against

Referring to FIG. 2, the gap between the O-shaped sealing ring shoulder 7 and the tapered seat 3 is an O-shaped sealing ring which is compressed when the pipe 13 is inserted into the socket and passes through the O-shaped sealing ring 2. Wider than the axial width of (2). This allows free compression of the O-shaped sealing ring 2, and the O-shaped sealing ring 2 is separated from the tapered sheet 3.

The inner diameter of the teeth 10 in the initial state is smaller than the outer diameter of the pipe 13, the inner diameter of the O-shaped sealing ring 2 is smaller than the outer diameter of the pipe 13, and the inner diameter of the separation ring 6 is the pipe ( It is larger than the outer diameter of 13).

The paper sheet 3 is annular and includes a tooth 10 and a corresponding lamp.

The socket comprises a locking cap shoulder 17 disposed on the inner wall of the socket body 1 between the clamp ring 4 and the locking cap 5 to stop the locking cap 5 from moving in the insertion direction of the pipe; It further comprises a convex portion 16 arranged on the outer wall of the separation ring to work with the locking cap 5 to prevent the separation ring 6 from falling out of the socket.

The separating ring 6 has an acute angle at the end of the separating ring 6 close to the O-shaped sealing ring 2. When the pipe 13 is inserted into the socket, it first passes through the separating ring 6 and then by insertion of the pipe 13 the outer wall of the pipe 13 is connected to the teeth 10 of the clamp ring 4. In contact, the teeth 10 are pushed to bend the flange 12 of the clamp ring 4. When the pipe is inserted, the force acting on the teeth 10 pushes the tapered seat towards the shoulder. After the pipe 13 passes through the clamp ring 4, as the pipe 13 is further inserted, the pipe passes through the tapered sheet 3 and the O-shaped sealing ring and then to the pipe stop member 11. do. The deflection of the flange is illustrated in FIG. 2, where the outer portion of the flange 12 moves in the direction opposite the pipe insertion (direction B), and the inner portion of the flange 12 moves in the insertion direction (direction A) of the pipe.

Referring to FIG. 3, when liquid is injected into the pipe 13 and is pressurized to expand the pipe 13, the pipe 13 is expanded; By expansion of the pipe 13, the O-shaped sealing ring 2 is urged by the pipe 13 and expands in the axial direction, and the O-shaped sealing ring 2 then clamps the taper sheet 3 by clamping it. The ring 4 is pushed to move in the opposite direction of pipe insertion until it is pushed against the locking cap. At this time, the bent flange starts to recover from its bent state and tries to flatten to its initial state, which enables an increase in the gripping force acting on the outer wall of the pipe 13, thereby locking the pipe 13 to the socket. .

In order to withdraw the pipe 13 from the socket, the separating ring 6 is pushed in the direction of insertion of the pipe, whereby the end of the separating ring 6 proximal to the clamp ring is pushed out of the teeth and separated from the outer wall of the pipe 13. The pipe 13 is unlocked and can be taken out of the socket.

The pipe 13 is preferably a PEX pipe.

The socket has a socket body comprising a clamp ring, a tapered sheet and an O-shaped sealing ring in the direction of insertion of the pipe; When the pipe is inserted into the socket, the flange placed on the clamp ring is bent; Compared to clamp rings with flanges that do not bend when the pipe is inserted, the gripping forces of the teeth of the clamp rings with bent flanges acting on the pipes are less than the grip forces of clamp rings with flanges that are not bent The bending of this flange allows for easy pipe insertion. When liquid is injected into the pipe and pressurized to expand the pipe, the O-shaped sealing ring is pressurized to expand in the axial direction, and the O-shaped sealing ring then taps the taper sheet, thereby releasing the clamp ring in the opposite direction to the pipe insertion. With the help of the pushing force of the tapered seat, the flange recovers from its bent state, which can increase the gripping force of the teeth of the clamp ring acting on the outer wall of the pipe, thereby bringing the pipe into the socket. Locks to ensure sealing of the socket and maintains the pipe connection.

The gap between the O-shaped sealing ring shoulder and the locking cap is injected into the pipe and pressurized to expand the pipe, which in turn pushes the O-shaped sealing ring to extend axially, causing the O-shaped sealing ring to taper seat The clamp ring can be pushed against the locking cap. This structure enhances the holding of the pipe connection by increasing the gripping force of the teeth acting on the outer wall of the pipe when the clamp ring is pushed against the locking cap and preventing the pipe from falling out of the socket.

If the gap between the O-shaped sealing ring shoulder and the tapered seat is wider than the axial width of the O-shaped sealing ring compressed when the pipe is inserted into the socket, the clamp ring will The O-shaped sealing ring does not come into contact with the tapered seat so as not to be pushed to move in the opposite direction of the pipe insertion, which does not increase the holding force of the teeth of the clamp ring acting on the outer wall of the pipe to be inserted, thereby compressing the O-shaped sealing ring. Do not restrain the insertion of pipes.

Since the inner diameter of the teeth in the initial state is smaller than the outer diameter of the pipe, the teeth of the clamp ring can grip the outer wall of the pipe. Since the inner diameter of the O-shaped sealing ring is smaller than the outer diameter of the pipe, the O-shaped sealing ring can form a sealing connection with the outer wall of the pipe, and since the inner diameter of the separating ring is larger than the outer diameter of the pipe, between the separation ring and the pipe There is enough clearance in the to allow the pipe to be inserted without being restrained.

The tapered sheet is annular and includes a ramp corresponding to the teeth. This allows the teeth of the clamp ring to bend when pushed by the pipe to be inserted.

A separation ring with an acute angle at the end of the separation ring proximate the O-shaped sealing ring ensures minimal contact with the teeth of the clamp ring.

Example 2

With reference to FIG. 4, the pipe connector prevents components such as the separating ring 6, the clamp ring 4, the tapered seat 3, and the O-shaped sealing ring 2 from falling out in the order of insertion of the pipe. A locking cap 5 for carrying out; A locking cap stop member 9 disposed at the end of the socket into which the pipe 13 is inserted to prevent the locking cap 5 from being pulled out; A separating ring 6 for unlocking the pipe 13; A clamp ring (4) comprising a flange (12) and a plurality of teeth (10) formed on the flange and fixed to an outer wall of the pipe (13); A taper seat 3 in movable connection with the inner wall of the socket body 1 to stop the clamp ring 4 from moving in the pipe insertion direction; Tapered seat shoulder 8 disposed on the inner wall of the socket body 1 to stop the taper seat 3 from moving in the pipe insertion direction, with the arrangement of the taper seat shoulder 8 and the locking cap 5 interposed therebetween. A tapered seat shoulder 8, which permits free axial movement of the clamp ring 4 and the tapered seat 3 in the case; An O-shaped sealing ring (2) forming a sealing connection with the outer wall of the pipe (13); An O-shaped sealing ring shoulder 7 disposed on the inner wall of the socket body 1 to stop the O-shaped sealing ring 2 from moving in the pipe insertion direction; It comprises a socket body 1 composed of a pipe stop member 11 disposed on the inner wall of the socket body 1 to stop the pipe 13 from moving in the pipe insertion direction.

The socket further includes an O-shaped sealing ring segment 14 disposed between the O-shaped sealing ring shoulder 7 and the tapered seat shoulder 8, and the seal is movable with the O-shaped sealing ring segment 14. The stepped portion 15 in the connected state is disposed at the end of the O-shaped sealing ring shoulder 7 adjacent to the O-shaped sealing ring 2, and the stepped portion 15 allows the tapered seat to move in the direction opposite to the pipe insertion. It is always kept in a sealingly movable connection with the O-shaped sealing ring segment 14 when being pushed out.

The gap between the O-shaped sealing ring shoulder 7 and the locking cap 5 enables the designed movement of the O-shaped sealing ring 2, the tapered seat 2 and the clamp ring 4, and liquid is injected into the pipe. This pipe is pressurized to expand, which in turn pushes the O-shaped sealing ring 2 to axially expand, so that the O-shaped sealing ring 2 locks the clamp ring 4 through the tapered seat 3. To be able to push against (5).

Referring to FIG. 5, the gap between the O-shaped sealing ring shoulder 7 and the tapered seat 3 is an O-shaped sealing ring that is compressed when the pipe 13 is inserted into the socket and passes through the O-shaped sealing ring 2. Wider than the axial width of (2).

However, the gap between the O-shaped sealing ring shoulder 7 and the tapered seat 3 is compressed when the pipe 13 is inserted into the socket and passes through the O-shaped sealing ring 2. A preferred design as wide as the axial width of is shown in FIG. 6. This allows free compression of the O type sealing ring.

The inner diameter of the teeth 10 in the initial state is smaller than the outer diameter of the pipe 13, the inner diameter of the O-shaped sealing ring 2 is smaller than the outer diameter of the pipe 13, and the inner diameter of the separation ring 6 is the pipe ( It is larger than the outer diameter of 13).

The paper sheet 3 is annular and includes a lamp corresponding to the tooth 10.

The socket comprises a locking cap shoulder 17 disposed on the inner wall of the socket body 1 between the clamp ring 4 and the locking cap 5 to stop the locking cap 5 from moving in the insertion direction of the pipe; It further comprises a convex portion 16 arranged on the outer wall of the separation ring to work with the locking cap 5 to prevent the separation ring 6 from falling out of the socket.

The separating ring 6 has an acute angle at the end of the separating ring 6 close to the O-shaped sealing ring 2. When the pipe 13 is inserted into the socket, it first passes through the separating ring 6 and then by insertion of the pipe 13 the outer wall of the pipe 13 is connected to the teeth 10 of the clamp ring 4. In contact, the teeth 10 are pushed to bend the flange 12 of the clamp ring 4. When the pipe is inserted, the force acting on the teeth 10 pushes the tapered seat towards the shoulder. After the pipe 13 passes through the clamp ring 4, as the pipe 13 is further inserted, the pipe passes through the tapered sheet 3 and the O-shaped sealing ring and then to the pipe stop member 11. do. The bending of the flange is illustrated in FIG. 6, where the outer portion of the flange 12 moves in the direction opposite the pipe insertion (direction B), and the inner portion of the flange 12 moves in the insertion direction (direction A) of the pipe.

Referring to FIG. 7, when liquid is injected into the pipe 13 and is pressurized to expand the pipe 13, the pipe 13 is expanded; By expansion of the pipe 13, the O-shaped sealing ring 2 is urged by the pipe 13 and expands in the axial direction, and the O-shaped sealing ring 2 then clamps the taper sheet 3 by clamping it. The ring 4 is pushed to move in the opposite direction of pipe insertion until it is pushed against the locking cap. At this time, the bent flange starts to recover from its bent state and tries to flatten to its initial state, which enables an increase in the gripping force acting on the outer wall of the pipe 13, thereby locking the pipe 13 to the socket. .

In order to withdraw the pipe 13 from the socket, the separating ring 6 is pushed in the direction of insertion of the pipe, whereby the end of the separating ring 6 proximal to the clamp ring is pushed out of the teeth and separated from the outer wall of the pipe 13. The pipe 13 can be taken out of the socket.

The pipe 13 is preferably a PEX pipe.

The pipe connector mentioned in the above embodiment has a socket body comprising a clamp ring, a tapered sheet and an O-shaped sealing ring in the insertion direction of the pipe; When the pipe is inserted into the socket, the flange placed on the clamp ring is bent; Compared to clamp rings with flanges that do not bend when the pipe is inserted, the gripping forces of the teeth of the clamp rings with bent flanges acting on the pipes are less than the grip forces of clamp rings with flanges that are not bent The bending of this flange allows for easy pipe insertion. When liquid is injected into the pipe and pressurized to expand the pipe, the O-shaped sealing ring is pressurized to expand in the axial direction, and the O-shaped sealing ring then taps the taper sheet, thereby releasing the clamp ring in the opposite direction to the pipe insertion. With the help of the pushing force of the tapered seat, the flange recovers from its bent state, which can increase the gripping force of the teeth of the clamp ring acting on the outer wall of the pipe, thereby bringing the pipe into the socket. Locks to ensure sealing of the socket and maintains the pipe connection.

The socket body includes an O-shaped sealing ring segment disposed between the O-shaped sealing ring shoulder and the tapered seat shoulder, and at the end of the O-shaped sealing ring shoulder proximate the O-shaped sealing ring, A stepped portion in a movable connection is arranged, which is always kept in a sealed movable connection with the O-shaped sealing ring segment when the taper sheet is pushed to move in the direction opposite to the pipe insertion. This structure can effectively ensure the sealing of the socket when the O-shaped sealing ring is pushed to move the tapered sheet in the direction opposite to the pipe insertion.

The gap between the O-shaped sealing ring shoulder and the locking cap is injected into the pipe and pressurized to expand the pipe, which in turn pushes the O-shaped sealing ring to extend axially, causing the O-shaped sealing ring to taper seat The clamp ring can be pushed against the locking cap. This structure enhances the holding of the pipe connection by increasing the gripping force of the teeth acting on the outer wall of the pipe when the clamp ring is pushed against the locking cap and preventing the pipe from falling out of the socket.

The gap between the O-shaped sealing ring shoulder and the tapered seat is as wide as the axial width of the O-shaped sealing ring, which is compressed when the pipe is inserted into the socket, and the O-shaped sealing ring merely touches the tapered sheet, By not applying pressure, the clamp ring is not pushed to move in the direction opposite to the pipe insertion when the O-shaped sealing ring is compressed and expanded in the axial direction, which does not increase the holding force of the teeth of the clamp ring acting on the outer wall of the pipe to be inserted. By not compressing, the compression of the O-shaped sealing ring will not restrain the insertion of the pipe, and furthermore, this calculated gap between the O-shaped sealing ring shoulder and the taper seat will cause the liquid to be injected into the inserted pipe and the pressure to expand the pipe. The clamp ring by applying the pressure of the compressed O-shaped sealing ring to the tapered seat entirely due to the axial expansion on receiving Pipe insert is pushed to move in the opposite direction.

Since the inner diameter of the teeth in the initial state is smaller than the outer diameter of the pipe, the teeth of the clamp ring can grip the outer wall of the pipe. Since the inner diameter of the O-shaped sealing ring is smaller than the outer diameter of the pipe, the O-shaped sealing ring can form a sealing connection with the outer wall of the pipe, and since the inner diameter of the separating ring is larger than the outer diameter of the pipe, between the separation ring and the pipe There is enough clearance in the to allow the pipe to be inserted without being restrained.

The tapered sheet is annular and includes a lamp corresponding to the tooth portion. This allows the teeth of the clamp ring to bend when pushed by the pipe to be inserted.

A separation ring with an acute angle at the end of the separation ring proximate the O-shaped sealing ring ensures minimal contact with the teeth of the clamp ring.

While particular embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that changes and modifications may be made in its broadest aspects without departing from the invention, and therefore the object of the appended claims is that It includes all such changes and modifications that fall within the true spirit and scope.

1: socket body 2: O type sealing ring
3. Taper Seat 4: Clamp Ring
5: lock cap 6: release ring
7: O-shaped sealing ring shoulder 8: tapered seat shoulder
9: locking cap stop member 10: teeth
11: pipe stop member 12: flange
13: pipe 14: O type sealing ring intercept
15: staircase 16: convex
17: locking cap shoulder

Claims (9)

Pipe connector, in the direction of insertion of the pipe:
A locking cap 5 to prevent the component from being pulled out of the socket;
A locking cap stop member (9) disposed at the end of the socket body (1) into which the pipe (13) is inserted to prevent the locking cap (5) from being pulled out;
A demounting ring 6 for unlocking the pipe 13;
A clamp ring (4) comprising a flange (12) and a plurality of teeth (10) arranged on the flange and fixed to an outer wall of the pipe (13);
A taper seat 3 in movable connection with the inner wall of the socket body 1 to stop the clamp ring 4 from moving in the pipe insertion direction;
Tapered seat shoulder 8 disposed on the inner wall of the socket body 1 to stop the taper seat 3 from moving in the pipe insertion direction, the tapered seat shoulder 8 and the locking cap 5 The arrangement comprises a tapered seat shoulder (8) allowing free axial movement of the clamp ring (4) and the tapered seat (3) therebetween;
An O-shaped sealing ring (2) forming a sealed connection with the outer wall of the pipe (13);
An O-shaped sealing ring shoulder (7) disposed on the inner wall of the socket body (1) to stop the O-shaped sealing ring (2) from moving in the pipe insertion direction;
It includes a pipe stop member 11 disposed on the inner wall of the socket body 1 to stop the pipe 13 to move in the pipe insertion direction
It has a socket body (1),
When the pipe 13 is inserted into the socket, the flange 12 of the clamp ring 4 is bent; When liquid is introduced into the pipe and the pipe is pressurized, the O-shaped sealing ring 2 is compressed and expands in the axial direction, and then the O-shaped sealing ring 2 opens the tapered sheet 3. By pushing the clamp ring 4 to move in the opposite direction of the pipe insertion, thereby locking the pipe 13,
Pipe connector. The pipe connector according to claim 1, further comprising an O-shaped sealing ring segment (14) disposed between the O-shaped sealing ring shoulder (7) and the tapered seat shoulder (8). The method of claim 2,
At the end of the O-shaped sealing ring shoulder 7 near the O-shaped sealing ring 2, a step 15 in a sealed movable connection with the O-shaped sealing ring segment 14 is provided. Is placed,
The stepped portion 15 is always kept in a sealingly movable connection with the O-shaped sealing ring segment 14 when the taper sheet is pushed to move in a direction opposite to the pipe insertion.
Pipe connector. 4. The gap between the O-shaped sealing ring shoulder 7 and the locking cap 5 is injected with liquid into the pipe to extend the O-shaped sealing ring 2 in the axial direction. When the pipe is pressurized to expand so as to compress it, it is possible for the O-shaped sealing ring 2 to push the clamp ring 4 against the locking cap 5 through the tapered seat 3. , Pipe connector. 5. The O-shaped seal according to claim 4, wherein the gap between the O-shaped sealing ring shoulder (7) and the tapered seat (3) is compressed when the pipe (13) passes through the O-shaped sealing ring (2). Pipe connector, not narrower than the axial width of the ring (2). The inner diameter of the tooth portion 10 in the initial state is smaller than the outer diameter of the pipe 13, and the inner diameter of the O-shaped sealing ring 2 is smaller than the pipe (6). A pipe connector smaller than the outer diameter of 13, wherein the inner diameter of the separation ring (6) is larger than the outer diameter of the pipe (13). The tape connector according to claim 6, wherein the tapered sheet (3) is annular and comprises a ramp corresponding to the tooth (10). The method of claim 7, wherein
A locking cap shoulder (17) disposed on an inner wall of the socket body (1) between the clamp ring (4) and the locking cap (5) to stop the locking cap (5) from moving in the pipe insertion direction;
Convex part 16 formed on the outer wall of the separation ring to interact with the locking cap 5 to prevent the separation ring 6 from coming out of the socket.
Including more, pipe connector. 9. Pipe connector according to claim 8, wherein the separation ring (6) has a sharp angle at the end of the separation ring (6) adjacent the clamp ring (4).

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