CN219323403U

CN219323403U - Bendable steel pipe structure

Info

Publication number: CN219323403U
Application number: CN202222270039.8U
Authority: CN
Inventors: 胡建华; 杜荷军; 王治国
Original assignee: Hangzhou Kangji Medical Instrument Co Ltd
Current assignee: Hangzhou Kangji Medical Instrument Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-07-11
Anticipated expiration: 2032-08-26

Abstract

The utility model provides a bendable steel pipe structure, and belongs to the technical field of medical accessories. The steel pipe comprises a steel pipe body with an annular section, wherein the steel pipe body comprises two end pipes, and a link structure which enables the steel pipe body to be bent axially at multiple angles is arranged between the two end pipes. The link structure in the steel pipe main body can realize the multi-angle bending in the circumferential direction of the steel pipe main body, and the force required by bending the same angle in the circumferential direction is the same, so that medical staff can more conveniently control the angle of the axial bending of the steel pipe main body when using, and secondly, the steel pipe main body made of steel materials accords with the rigidity requirement.

Description

Bendable steel pipe structure

Technical Field

The utility model belongs to the technical field of medical accessories, and relates to a bendable steel pipe structure.

Background

In the medical field, there is a need for a tubular part which has a rigidity requirement in the radial direction and can be bent at a large angle in the axial direction, and is used for manufacturing medical instruments such as an electronic soft mirror or a hysteroscope, and the requirements are generally met in the prior art by a mode of matching a hose with a fixing ring.

For example, chinese patent discloses an electronic visual hose laryngoscope with adjustable insertion direction [ application number: 201310324787.2, including handle, hose, the one end of handle is connected with the one end of hose, and the other end tip of hose is equipped with the camera, be equipped with the solid fixed ring, the swivel becket, the solid fixed cover of articulated link each other in proper order from inside to outside in the hose other end, camera fixed connection is in the solid fixed cover, be equipped with the rotation piece on the handle, the rotation piece is connected with the end wall of solid fixed cover inner end through two cotton ropes, and radial rigidity of hose in this utility model patent is realized through a plurality of solid fixed rings, and in actual production, the assembly process of hose and solid fixed ring is very loaded down with trivial details, and production efficiency is low.

Disclosure of Invention

The object of the present utility model is to provide a bendable steel pipe structure in view of the above problems.

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

the utility model provides a flexible steel pipe structure, includes the annular steel pipe main part of cross-section, the steel pipe main part include two end pipes, be equipped with the link structure that enables steel pipe main part multi-angle axial bending between two end pipes.

The link structure in the steel pipe main body can realize multi-angle bending of the steel pipe main body in the circumferential direction, and the forces required by bending the steel pipe main body at the same angle in the circumferential direction are the same, so that medical staff can more conveniently control the angle of axial bending of the steel pipe main body when using the steel pipe main body, and secondly, the steel pipe main body made of steel materials meets the rigidity requirement, and can realize integrated production by cutting the steel pipe without assembly, thereby having high production efficiency.

In the above-mentioned flexible steel pipe structure, the link structure include at least three links that set up along the axial of steel pipe main part, have the bending clearance and link to each other through flexible connection structure between the adjacent link, a plurality of flexible connection structures are the heliciform and are arranged and lie in the contained angle between the two flexible connection structures at link structure both ends.

The flexible connecting structure can enable adjacent links to bend in the range of bending gaps after being stressed so as to realize bending of the steel pipe main body, and secondly, the flexible connecting structures in the link structure are arranged in a spiral mode, so that the stress cannot be changed obviously when the steel pipe main body is bent at the same angle in the axial direction at any angle in the circumferential direction.

In the above-mentioned bendable steel pipe structure, the bendable connecting structure includes two connecting pieces symmetrically arranged. The two ends of the steel pipe main body can be bent and deformed along the connecting lines of the two connecting sheets after receiving the force in the direction perpendicular to the connecting lines of the two connecting sheets, and can automatically rebound and reset by the material characteristics of the steel connecting sheets after the force is lost.

In the above-mentioned bendable steel pipe structure, a plurality of link structures are provided between the two end pipes.

In the above-described bendable steel pipe structure, the greater the number of the link structures, the greater the angle at which the steel pipe body is bendable in the axial direction. The bending of the steel pipe main body can be limited by bending gaps, and when the link structures in the steel pipe main body are increased, two parallel bendable connecting structures in different link structures can enable the steel pipe main body to be bent axially in the same direction, so that bending intervals of the two parallel bendable connecting structures can be overlapped, and the bending angle of the steel pipe main body in the axial direction is increased.

In the bendable steel pipe structure, the section of the connecting sheet is arc-shaped.

In the bendable steel pipe structure, the intervals among a plurality of links are the same.

In the bendable steel pipe structure, the thickness of the connecting sheet along the radial direction of the steel pipe main body is the same as the thickness of the link.

In the above-mentioned bendable steel pipe structure, the steel pipe body may be bent along the connecting line of the two connecting pieces in the axial direction.

In the bendable steel pipe structure, the link structure is formed by cutting. The steel pipe main body is formed into a link structure in the middle through cutting, so that a welding line does not exist in the steel pipe main body in the application, and the overall strength of the steel pipe main body is high.

Compared with the prior art, the utility model has the advantages that:

1. the link structure in the steel pipe main body can realize multi-angle bending of the steel pipe main body in the circumferential direction, and the forces required by bending the steel pipe main body at the same angle in the circumferential direction are the same, so that medical staff can more conveniently control the angle of axial bending of the steel pipe main body when using the steel pipe main body, and secondly, the steel pipe main body made of steel materials meets the rigidity requirement, and can realize integrated production by cutting the steel pipe without assembly, thereby having high production efficiency.

2. The flexible connecting structure can enable adjacent links to bend in the range of bending gaps after being stressed so as to realize bending of the steel pipe main body, and secondly, the flexible connecting structures in the link structure are arranged in a spiral mode, so that the stress cannot be changed obviously when the steel pipe main body is bent at the same angle in the axial direction at any angle in the circumferential direction.

3. The two ends of the steel pipe main body can be bent and deformed along the connecting lines of the two connecting sheets after receiving the force in the direction perpendicular to the connecting lines of the two connecting sheets, and can automatically rebound and reset by the material characteristics of the steel connecting sheets after the force is lost.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic structural diagram of a link structure;

FIG. 3 is an enlarged schematic view at A in FIG. 1;

fig. 4 is a three-dimensional view of the present utility model.

In the figure, a steel pipe main body 1, an end pipe 2, a link structure 3, a link 4, a bendable connecting structure 5 and a connecting sheet 6.

Detailed Description

As shown in fig. 1-4, a bendable steel pipe structure comprises a steel pipe main body 1 with an annular section, wherein the steel pipe main body 1 comprises two end pipes 2, and a link structure 3 which can enable the steel pipe main body 1 to bend axially at multiple angles is arranged between the two end pipes 2.

Specifically, as shown in fig. 1 to 4, the link structure 3 includes at least three links 4 disposed along the axial direction of the steel pipe body 1, wherein a bending gap 7 is formed between adjacent links 4 and connected by a bendable connecting structure 5, and a plurality of bendable connecting structures 5 are spirally arranged and have included angles between two bendable connecting structures 5 located at two ends of the link structure 3. The flexible connecting structure can enable adjacent links to bend in the range of bending gaps after being stressed so as to realize bending of the steel pipe main body, and secondly, the flexible connecting structures in the link structure are arranged in a spiral mode, so that the stress cannot be changed obviously when the steel pipe main body is bent at the same angle in the axial direction at any angle in the circumferential direction.

In particular, as shown in connection with fig. 1-4, the bendable connecting structure 5 comprises two connecting pieces 6 arranged symmetrically. The two ends of the steel pipe main body can be bent and deformed along the connecting lines of the two connecting sheets after receiving the force in the direction perpendicular to the connecting lines of the two connecting sheets, and can automatically rebound and reset by the material characteristics of the steel connecting sheets after the force is lost.

Specifically, as shown in fig. 1 and 3, a plurality of link structures 3 are provided between the two end pipes 2, and the greater the number of the link structures 3, the greater the angle at which the steel pipe body 1 is bendable in the axial direction. The bending of the steel pipe main body can be limited by bending gaps, and when the link structures in the steel pipe main body are increased, two parallel bendable connecting structures in different link structures can enable the steel pipe main body to bend axially in the same direction, so that bending intervals of the two parallel bendable connecting structures can be overlapped, and the bending angle of the steel pipe main body 1 in the axial direction is increased.

Specifically, as shown in fig. 1 to 4, the cross section of the connecting piece 6 is arc-shaped, the intervals among the links 4 are the same, the thickness of the connecting piece 6 along the radial direction of the steel pipe main body 1 is the same as the thickness of the link 4, and the steel pipe main body 1 can be bent along the connecting line of the two connecting pieces 6 along the axial direction.

Preferably, as shown in connection with fig. 1-4, the link structure 3 is formed by cutting. The steel pipe main body is formed into a link structure in the middle through cutting, so that a welding line does not exist in the steel pipe main body in the application, and the overall strength of the steel pipe main body is high.

The working principle of the utility model is as follows: the link structure in the steel pipe main body can realize multi-angle bending in the circumferential direction of the steel pipe main body, and the forces required by bending the same angle in the circumferential direction are the same, so that medical staff can more conveniently control the axial bending angle of the steel pipe main body during use, and secondly, the steel pipe main body made of steel materials meets the rigidity requirement, and can realize integrated production by cutting the steel pipe without assembly, so that the production efficiency is high;

the bendable connecting structure can enable adjacent links to bend in the bending clearance range after being stressed so as to realize bending of the steel pipe main body, and secondly, the plurality of bendable connecting structures in the link structure are arranged in a spiral manner so as to ensure that stress does not change obviously when the steel pipe main body bends at the same angle in the axial direction at any angle in the circumferential direction;

the bending of the steel pipe main body can be limited by bending gaps, and when the link structures in the steel pipe main body are increased, two parallel bendable connecting structures in different link structures can enable the steel pipe main body to bend axially in the same direction, so that bending intervals of the two parallel bendable connecting structures can be overlapped, and the bending angle of the steel pipe main body 1 in the axial direction is increased.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although steel pipe body 1, end pipe 2, link structure 3, link 4, bendable connecting structure 5, connecting piece 6, etc. are used more herein, these terms are used merely for convenience in describing and explaining the essence of the present utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The utility model provides a flexible steel pipe structure, includes that the cross-section is annular steel pipe main part (1), its characterized in that, steel pipe main part (1) include two end pipes (2), be equipped with link structure (3) that enable steel pipe main part (1) multi-angle axial bending between two end pipes (2).

2. A bendable steel pipe structure according to claim 1, characterized in that the link structure (3) comprises at least three links (4) arranged along the axial direction of the steel pipe main body (1), wherein bending gaps (7) are arranged between adjacent links (4) and are connected through bendable connecting structures (5), and a plurality of bendable connecting structures (5) are arranged in a spiral shape and are positioned at included angles between two bendable connecting structures (5) at two ends of the link structure (3).

3. A bendable steel pipe structure according to claim 2, characterized in that the bendable connecting structure (5) comprises two connecting pieces (6) arranged symmetrically.

4. A bendable steel pipe structure according to any one of claims 1-3, c h a r a c t e r i z e d in that several link structures (3) are arranged between the two end pipes (2).

5. A bendable steel pipe structure according to claim 4, characterized in that the greater the number of the link structures (3), the greater the angle at which the steel pipe body (1) is bendable in the axial direction.

6. A bendable steel pipe structure according to claim 3, characterized in that the cross section of the connecting piece (6) is arc-shaped.

7. A bendable steel pipe structure according to claim 2 or 3, characterized in that the spacing between several segments (4) is the same.

8. A bendable steel pipe structure according to claim 3, characterized in that the thickness of the connecting piece (6) in the radial direction of the steel pipe body (1) is the same as the thickness of the link (4).

9. A bendable steel pipe structure according to claim 3, characterized in that the steel pipe body (1) is bendable in the axial direction along the connection line of the two connection pieces (6).

10. A bendable steel pipe structure according to any one of claims 1-3, wherein the link structure (3) is formed by cutting.