CN219013661U - Connection structure for strengthening connection with connecting piece - Google Patents

Abstract

The utility model relates to a connecting structure for strengthening connection with a connecting piece, which mainly solves the problem of poor connection tightness of a pipe fitting and the connecting piece in the prior art, and comprises a pipe fitting with external threads, the connecting piece made of plastic materials and a connecting component arranged between the pipe fitting and the connecting piece, wherein the connecting component comprises a metal joint embedded at a first joint and a sealing ring embedded in the metal joint, the through hole comprises a first through hole and a second through hole which are coaxially arranged, the first through hole is positioned at the outer end of the connecting piece, the inner surface of the first through hole is positioned in a mounting groove between an end edge and the internal threads, the diameter of the mounting groove is larger than the diameter of the first through hole provided with the internal threads, the sealing ring is embedded in the mounting groove, the sealing ring comprises a first part and a second part which are integrally connected and are in an annular structure, the diameter of the first part is larger than the diameter of the second part, the circumferential outer side surface of the first part is abutted against the inner side surface of the mounting groove, and the end surface of the second part is abutted against the end edge.

Description

Connection structure for strengthening connection with connecting piece

Technical Field

The utility model relates to a connecting structure for strengthening connection with a connecting piece.

Background

Many pipes are needed in the installation process of the household water heater, and two adjacent pipes are needed to be connected through a connecting piece, such as a two-way pipe, a three-way pipe or a four-way pipe, because the pipeline laying distance is long and short and the corner problem exists. The traditional pipe fitting and the connecting piece are made of metal materials, the connecting mode is high in use cost, poor in connecting tightness, and poor in use convenience, two woolen layers and positions of a pipeline are generally required to be wrapped and sealed by raw rubber belts; the existing pipe fitting and connecting piece of making through using plastic materials are connected through smearing glue when connecting to the pipe fitting can intercept corresponding length according to actual need, and the convenience of using promotes greatly, and sealed effect is also showing and promotes, but, the output of pipeline all is the connection valve, and the valve is mostly made by adopting metal materials, through the connecting piece threaded connection of making with plastic materials, its leakproofness of connecting is poor.

Disclosure of Invention

Therefore, in view of the above-mentioned problems, the present utility model provides a connection structure for strengthening connection with a connecting member, which mainly solves the problem of poor connection tightness between a pipe and the connecting member in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a reinforce connection structure who is connected with connecting piece, includes the pipe fitting that has the external screw thread, the connecting piece of being made by plastic material and locates the coupling assembling between pipe fitting and the connecting piece, the connecting piece has first joint, second joint and the runner that communicates first joint and second joint, coupling assembling is including inlaying the metal joint of locating first joint department and inlaying the sealing washer of locating in the metal joint, the metal joint has the through-hole with the runner intercommunication, the through-hole includes coaxial first through-hole and the second through-hole that sets up, the diameter of first through-hole is greater than the diameter of second through-hole for form one end edge between first through-hole and the second through-hole, first through-hole is located the outer end of connecting piece, the internal surface of first through-hole is equipped with the internal thread, the internal surface of first through-hole just is located the mounting groove between end edge and the internal thread, the diameter size of mounting groove is greater than the diameter size of first through-hole department that is equipped with the internal thread, the sealing washer inlays to locate the mounting groove, the sealing washer is including the first portion and the second portion that are cyclic annular structure, diameter and second portion are in the diameter along the diameter of first end edge, the diameter of first portion is located the diameter along the first end face.

Further, an inner annular groove is formed in the inner surface of the second through hole.

Further, the depth dimension of the side wall of the inner annular groove near the outer end is larger than the depth dimension of the side wall near the inner end.

Further, the outer side face of the metal joint is provided with a first convex plate, a second convex plate, a third convex plate, a fourth convex plate and a fifth convex plate at intervals in sequence, the diameter sizes of the first convex plate, the second convex plate, the third convex plate, the fourth convex plate and the fifth convex plate are reduced one by one, and annular clamping grooves are formed in the lower surfaces of the second convex plate and the fourth convex plate.

Further, at least two protruding blocks are uniformly arranged around the inner end of the metal joint.

Further, an outer annular groove is arranged on the outer side face of the metal connector and located at the second through hole.

By adopting the technical scheme, the utility model has the beneficial effects that: this reinforce connection structure who is connected with the connecting piece inlays through the first joint of connecting piece and establishes the internal thread and be used for with the external screw thread threaded connection of pipe fitting in the metal joint, improve the intensity of connection, and the end edge that sets up is used for accepting the sealing washer, and the mounting groove installation sealing washer that sets up, the diameter size of the first portion of sealing washer is greater than the diameter size of second portion simultaneously, the circumference lateral surface of first portion supports in the medial surface of mounting groove, the terminal surface of second portion supports on the end edge, when making pipe fitting screw in metal joint, the terminal surface of pipe fitting supports on the terminal surface of the first portion of sealing washer, and the extrusion has elastic sealing washer, make it form elastic deformation, because the diameter size of first portion is greater than the diameter size of second portion, this unnecessary part forms upwards the roll-up and supports in the screwed connection department of internal thread and external screw thread, form better sealed effect, this kind of connection structure is simple, and dismantle simple to operate, the convenience of using has been improved.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of a seal ring according to an embodiment of the present utility model.

Detailed Description

The utility model will now be further described with reference to the drawings and detailed description.

The embodiment of the utility model comprises the following steps:

referring to fig. 1, 2 and 3, a connection structure for reinforcing connection with a connection member includes a pipe member 1 having an external thread, a connection member 2 made of a plastic material, and a connection assembly provided between the pipe member 1 and the connection member 2, the connection member 2 having a first joint 21, a second joint 22, and a flow passage 23 communicating the first joint 21 and the second joint 22, the connection assembly including a metal joint 3 embedded at the first joint 21 and a sealing ring 4 embedded in the metal joint 3, the metal joint 3 having a through hole 5 communicating with the flow passage 23, the through hole 5 including a first through hole 51 and a second through hole 52 coaxially provided, the diameter of the first through hole 51 being larger than that of the second through hole 52, so that form one end edge 6 between first through-hole 51 and the second through-hole 52, first through-hole 51 is located the outer end of connecting piece 2, the internal surface of first through-hole 51 is equipped with the internal thread, the internal surface of first through-hole 51 just is located mounting groove 7 between end edge 6 and the internal thread, the diameter size of mounting groove 7 is greater than the diameter size of the first through-hole 51 department that is equipped with the internal thread, sealing washer 4 inlays and locates in mounting groove 7, sealing washer 4 includes the first portion 41 and the second portion 42 of body coupling and being annular structure, the diameter size of first portion 41 is greater than the diameter size of second portion 42, the circumference lateral surface of first portion 41 is supported in the medial surface of mounting groove 7, the terminal surface of second portion 42 is supported on end edge 6.

This reinforce and connection structure that connecting piece is connected inlays through the first joint 21 of connecting piece 2 and establishes metal joint 3 to establish the internal thread in metal joint 3 and be used for with the external screw thread threaded connection of pipe fitting 1, improve the intensity of connection, and the end edge 6 that sets up is used for accepting sealing washer 4, and the mounting groove 7 installation sealing washer 4 of setting, the diameter size of the first portion 41 of sealing washer 4 is greater than the diameter size of second portion 42 simultaneously, the circumference lateral surface of first portion 41 supports and leans on the medial surface of mounting groove 7, the terminal surface of second portion 42 supports and leans on end edge 6, when making pipe fitting 1 screw in metal joint 3, the terminal surface of pipe fitting 1 supports on the terminal surface of the first portion 41 of sealing washer 4, and extrude and have elastic sealing washer 4, make it form elastic deformation, because the diameter size of first portion 41 is greater than the diameter size of second portion 42, this unnecessary part forms the upward roll and leans on the threaded connection department of internal thread and external screw thread in the extrusion in the in-process, form better sealed effect, this kind of connection structure is simple, and dismantlement simple to install convenience has improved the convenience of use.

And, the internal surface of the second through hole 52 is provided with an inner annular groove 8, the depth dimension a of the side wall close to the outer end on the inner annular groove 8 is greater than the depth dimension b of the side wall close to the inner end, the inner annular groove 8 plays a role in pressure compensation, since the diameter of the first through hole 51 is greater than the diameter of the second through hole 52, a pressure difference exists when water flows, the depth dimension a of the side wall close to the outer end on the inner annular groove 8 is greater than the depth dimension of the side wall b close to the inner end, the water flows to be filled in the inner annular groove 8 in the process of impacting the side wall close to the outer end and is extruded to follow the water flow, the stability of the water flow is maintained, and the noise is reduced.

In this embodiment, the outer side surface of the metal joint 3 and the first through hole 51 are sequentially provided with a first convex plate 11, a second convex plate 12, a third convex plate 13, a fourth convex plate 14 and a fifth convex plate 15 at intervals, the diameter sizes of the first convex plate 11, the second convex plate 12, the third convex plate 13, the fourth convex plate 14 and the fifth convex plate 15 are reduced one by one, the lower surfaces of the second convex plate 12 and the fourth convex plate 14 are provided with annular clamping grooves 9, three convex blocks 10 are uniformly arranged around the inner end of the metal joint 3, and the outer side surface of the metal joint 3 and the second through hole 52 are provided with an outer annular groove 16.

So designed for connecting piece 2 and metal joint 3 can realize injection moulding, the filling of the plastics material injection moulding process of being convenient for improves the fastness that metal joint 3 and connecting piece 2 are connected, can fill the clearance between first flange 11, second flange 12, third flange 13, fourth flange 14 and fifth flange 15 at plastics material to annular draw-in groove 9 positions realize the axial restriction effect of metal joint 3, the rotation of metal joint 3 is restricted in the setting of rethread lug 10, simultaneously, the location of being convenient for in the metal joint 3 die cavity is fixed, improves the qualification rate of product.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (6)

1. A connection structure for strengthening connection with a connecting piece, characterized in that: including the pipe fitting that has the external screw thread, by connecting piece and locating the coupling assembling between pipe fitting and the connecting piece that plastic material made, the connecting piece has first joint, second joint and the runner that communicates first joint and second joint, coupling assembling is including inlaying the metal joint of locating first joint department and inlaying the sealing washer of locating in the metal joint, the metal joint has the through-hole with the runner intercommunication, the through-hole includes coaxial first through-hole and the second through-hole that sets up, the diameter of first through-hole is greater than the diameter of second through-hole for form one end edge between first through-hole and the second through-hole, first through-hole is located the outer end of connecting piece, the internal surface of first through-hole is equipped with the internal thread, the internal surface of first through-hole just is located the mounting groove between end edge and the internal thread, the diameter size of mounting groove is greater than the diameter size of first through-hole department that is equipped with the internal thread, the sealing washer inlays and locates the mounting groove, the sealing washer includes first portion and the second portion that an organic whole connects and be annular structure, the diameter size is greater than the second portion, the circumference edge is supported on the side face on the second end face.

2. The connection structure for reinforcing connection with a connection member according to claim 1, wherein: an inner annular groove is formed in the inner surface of the second through hole.

3. The connection structure for reinforcing connection with a connecting member according to claim 2, wherein: the depth dimension of the side wall of the inner annular groove near the outer end is larger than the depth dimension of the side wall near the inner end.

4. A connection structure for reinforcing a connection with a connection member according to any one of claims 1 to 3 wherein: the metal joint is characterized in that a first convex plate, a second convex plate, a third convex plate, a fourth convex plate and a fifth convex plate are sequentially arranged on the outer side face of the metal joint and located at the first through hole at intervals, the diameter sizes of the first convex plate, the second convex plate, the third convex plate, the fourth convex plate and the fifth convex plate are reduced one by one, and annular clamping grooves are formed in the lower surfaces of the second convex plate and the fourth convex plate.

5. The connection structure for reinforcing connection with a connection member according to claim 4, wherein: at least two protruding blocks are uniformly arranged around the inner end of the metal joint.

6. The connection structure for reinforcing connection with a connection member according to claim 5, wherein: an outer annular groove is arranged on the outer side face of the metal connector and located at the second through hole.

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