CN212745488U

CN212745488U - Metal bent pipe with convex hull

Info

Publication number: CN212745488U
Application number: CN202020411549.0U
Authority: CN
Inventors: 董阿能; 郑志军; 王佳胜
Original assignee: Ningbo Chinaust Automobile Fittings Co ltd
Current assignee: Ningbo Chinaust Automobile Fittings Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2021-03-19
Anticipated expiration: 2030-03-26

Abstract

The application discloses a metal bent pipe with a convex hull, which comprises a first joint pipe part, a second joint pipe part and a bent pipe part, wherein the first joint part is a straight pipe, a first end is formed at the end part of the first joint pipe part, wherein the elbow portion extends integrally from the first joint portion, wherein the elbow portion is an elbow, wherein the second joint part integrally extends from the bent pipe part, wherein the second joint pipe part is a straight pipe, the end part of the second joint pipe part forms a second end, the outer wall of the first joint pipe part is provided with at least one umbrella-shaped convex hull, the cross-sectional diameter of the umbrella-shaped convex hull provided near the outer wall of the first joint pipe portion gradually increases from the first end toward the second end, so as to form a guiding inclined plane on the umbrella-shaped convex hull, and the guiding inclined plane is used for guiding the hose to slide through the umbrella-shaped convex hull and be in interference butt joint with the first joint pipe part.

Description

Metal bent pipe with convex hull

Technical Field

The utility model relates to a pipe fitting especially relates to a metal return bend with convex closure.

Background

Pipe fittings are widely used to conduct fluids and are increasingly used in a variety of different fields. Metal pipes are increasingly being used in many devices due to their relatively high hardness and long service life. Such as automobiles, the metal tube can be used to conduct fluids such as fuel, engine oil, and the like. Since the designer predetermines the dimensions and spatial shape of the various components of the vehicle before shipment, the shape and dimensions of the pipe elements require strict control by the supplier.

However, the connection between the tube and the hose in the prior art needs to be connected through an intermediate member, such as a pipe joint, or directly sleeved with the hose. However, in order to prevent the hose from being separated from the metal pipe, in the prior art, some anti-separation protrusions are welded to the abutting end portions of the metal pipe, so that the metal pipe pieces are not easily separated from each other after being connected with the hose. However, after the end of the metal pipe is provided with the protrusion in a welding manner, on one hand, the process is complicated, and on the other hand, the metal pipe is easy to conduct heat in the welding process, so that the metal pipe deforms, the diameter of the metal pipe affects the yield of the metal pipe, and the requirements of vehicle manufacturers cannot be met. In addition, the arrangement of the protrusion makes it difficult to assemble the metal pipe with the hose, and the main reason is that the arrangement of the protrusion makes it difficult for the hose which is sleeved with the metal pipe in an interference manner to pass over the protrusion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a metal return bend that has the convex closure can guide the hose rather than cup jointing, has good leakproofness simultaneously.

An object of the utility model is to provide a metal return bend that has convex closure, wherein the metal return bend that has the convex closure include two joint pipe portions and certainly a return bend portion that connects integrative extension of pipe portion, wherein two at least one in the joint pipe portion it is equipped with the umbrella-type convex closure of bamboo joint formula to connect pipe portion, wherein the umbrella-type convex closure pass through spinning technology form in connect pipe portion.

Another object of the present invention is to provide a metal elbow with convex closure, wherein the metal elbow with convex closure the outer wall of the joint pipe is provided with a plurality of umbrella-shaped convex closures at intervals, wherein the outer wall of the joint pipe is at least a pair of the orientation of the umbrella-shaped convex closures is set oppositely, and two of the orientation are set oppositely to form an annular groove between the umbrella-shaped convex closures for installing a sealing member.

In order to realize the utility model discloses above at least one purpose, the utility model provides a metal return bend with convex closure, it includes:

the first joint pipe part is a straight pipe, and a first end is formed at the end part of the first joint pipe part;

a bent pipe portion, wherein the bent pipe portion integrally extends from the first joint pipe portion, wherein the bent pipe portion is a bent pipe; and

a second connects the pipe portion, wherein the second connects the pipe portion certainly the integrative extension of bend pipe portion, wherein the second connects the pipe portion to be the straight tube, the tip that the second connects the pipe portion forms a second end, the outer wall of first joint pipe portion is equipped with an at least umbrella-shaped convex closure, is being close to the outer wall setting of first joint pipe portion the cross-sectional diameter of umbrella-shaped convex closure certainly first end to the second end increases gradually, with form a guide inclined plane on the umbrella-shaped convex closure for the guide hose slides the umbrella-shaped convex closure and interference butt joint in first joint pipe portion.

According to the utility model discloses an embodiment, first joint pipe portion with the umbrella-type convex closure is adjacent and is located the umbrella-type convex closure with one side between the second end forms a reverse umbrella-type convex closure.

According to the utility model discloses an embodiment, the cross-sectional diameter of reverse umbrella-type convex closure certainly first end to the second end reduces gradually.

According to the utility model discloses an embodiment, reverse umbrella-type convex closure with form an annular groove between the umbrella-type convex closure, be used for the installation the sealing member.

According to the utility model discloses an embodiment, first joint pipe portion with the anti-umbrella-shaped convex closure is adjacent and is located anti-umbrella-shaped convex closure with one side between the second end is equipped with a barrier ring ═ for, the barrier ring certainly the outer wall of first joint pipe portion is integrative radially extends.

According to an embodiment of the present invention, the umbrella-shaped convex hull and the reverse umbrella-shaped convex hull are integrally formed by a spinning process.

According to an embodiment of the invention, the second joint pipe portion forms at least one expansion joint.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.

Drawings

Fig. 1 shows a perspective view of a metal bent pipe with a convex hull according to the present invention.

Fig. 2 is a perspective view of another view of the metal bent pipe with convex hull according to the present invention.

Fig. 3 shows a schematic view of the structure of the metal elbow part with convex hull of the present invention.

Detailed Description

The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

With reference to fig. 1 to 3, a metal pipe with a convex hull according to a preferred embodiment of the present invention, wherein the metal pipe with a convex hull 100 can be used to guide fluid on a vehicle. The metal bent pipe with the convex hull includes a first joint pipe portion 11, a bent pipe portion 12 integrally extended from the first joint pipe portion 11, and a second joint pipe portion 13 integrally connected to the bent pipe portion 12.

The first connector tube portion 11 can be used to mate with a hose. And the first joint pipe portion 11 and the second joint pipe portion 13 are provided as straight pipes. The bent pipe portion 12 is formed in a curved shape. In particular, the curved shape of the bent pipe portion 12 may be implemented as an S-shape or other shape.

In the present invention, the outer wall of the first joint pipe portion 11 is provided with an umbrella-shaped convex hull 111. The end of the first joint pipe portion 11 forms a first end 1101. The end of the second joint pipe portion 13 forms a second end 1301. The sectional diameter of the umbrella-shaped convex hull 111 provided near the outer wall of the first joint pipe portion 11 gradually increases from the first end 1101 to the second end 1301 to form a guiding slope 11101 on the umbrella-shaped convex hull 111. When the first joint pipe portion 11 needs to be sleeved with the hose, the guiding inclined surface 11101 can guide the hose to slide over the umbrella-shaped convex hull 111, so that the metal bent pipe with the convex hull is assembled with the hose.

Preferably, the first joint pipe portion 11 forms an inverted umbrella-shaped convex hull 112 adjacent to the umbrella-shaped convex hull 111 and on one side of the umbrella-shaped convex hull 111 and the second end 1301. An annular groove 113 is formed between the reverse umbrella-shaped convex hull 112 and the umbrella-shaped convex hull 111 for mounting the sealing element. Preferably, the seal is a sealing ring. Preferably, the metal elbow with convex hull further comprises at least one sealing ring 20, wherein the sealing ring 20 is disposed in the annular groove 113.

It is worth integrating that the cross-sectional diameter of the reverse umbrella-shaped convex hull 112 gradually decreases from the first end 1101 to the second end 1301. Through the design, when the first joint pipe part 11 is butted with the hose, the hose slides over the umbrella-shaped convex hull 111 and the reverse umbrella-shaped convex hull 112 in sequence, so that the hose can form an interference fit position at two different positions of the umbrella-shaped convex hull 111 and the reverse umbrella-shaped convex hull 112, and the first joint pipe part 11 is better in sealing butt joint with the hose.

More preferably, the first joint pipe portion 11 is further provided with a stop ring 114. The blocking ring 114 extends integrally in the radial direction from the outer wall of the first joint pipe portion 11. It is worth integratively, when the first joint pipe portion 11 needs to be sleeved with the hose, whether the first joint pipe portion 11 is assembled with the hose can be visually observed by observing whether the end portion of the hose is attached to the stop ring 114.

It is worth integratively, in the present invention, the umbrella-shaped convex hull 111 and the reverse umbrella-shaped convex hull 112 are integrally formed by a spinning process. The metal bent pipe with the convex hulls is manufactured through the process, and the metal bent pipe with the convex hulls does not need to be heated, so that the metal bent pipe with the convex hulls is difficult to deform in the manufacturing process.

Preferably, the second joint pipe portion 13 forms at least one expansion joint 131, wherein a larger fluid accommodating space is formed at the expansion joint 131, so that when the fluid is retained in the convex hull metal bent pipe, the convex hull metal bent pipe does not crack due to thermal expansion and contraction of the fluid.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. A metal return bend with convex closure, its characterized in that, it includes:

2. The convex hull metal elbow according to claim 1, wherein the first joint pipe portion forms an inverted umbrella-shaped convex hull on a side adjacent to the umbrella-shaped convex hull and between the umbrella-shaped convex hull and the second end.

3. The convex hull metal elbow according to claim 2, wherein the inverted umbrella-shaped convex hull gradually decreases in cross-sectional diameter from the first end to the second end.

4. The curved metal tube with a convex hull according to claim 2, wherein an annular groove is formed between the reverse umbrella-shaped convex hull and the umbrella-shaped convex hull for mounting a seal.

5. The curved metal tube with a convex hull according to claim 3, wherein an annular groove is formed between the reverse umbrella-shaped convex hull and the umbrella-shaped convex hull for mounting a seal.

6. The curved metal pipe with a convex hull according to any one of claims 2 to 5, wherein the first joint pipe portion is provided with a stopper ring at a side adjacent to the reverse umbrella-shaped convex hull and between the reverse umbrella-shaped convex hull and the second end, the stopper ring extending integrally and radially from an outer wall of the first joint pipe portion.

7. The convex hull metal elbow according to claim 6, wherein the second joint pipe portion forms at least one expansion joint.

8. The convex hull metal elbow according to claim 1, wherein the second joint pipe portion forms at least one expansion joint.