CN209966321U

CN209966321U - Controllable bent pipe structure

Info

Publication number: CN209966321U
Application number: CN201820737701.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-17
Filing date: 2018-05-17
Publication date: 2020-01-21
Anticipated expiration: 2028-05-17

Abstract

The utility model discloses a controllable crooked tubular structure, including constituting a plurality of tubular first tube couplings of circle and the second tube coupling of interval series connection, first tube coupling respectively is equipped with C type interlock portion along the axial both ends of crooked pipe, and the second tube coupling respectively is equipped with along the axial both ends of crooked pipe with C type interlock portion complex C type breach and globular arch, during the series connection, but the globular arch block of second tube coupling in the C type interlock portion of adjacent first tube coupling for the C type interlock portion of adjacent first tube coupling can imbed the C type breach of second tube coupling, and the C type interlock portion of first tube coupling can relative motion in the C type breach of second tube coupling during the bending. The utility model discloses a controllable crooked pipe is established ties by the tube coupling interval of two kinds of structure differences and is formed, and the both ends design of every kind of tube coupling is central symmetrical structure, can simplify processing technology, increases the simplicity of manufacturing, and the ten minutes of each mutual block of tube coupling is inseparable and firm simultaneously, and the control of bending angle is nimble when just can be crooked.

Description

Controllable bent pipe structure

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a controllable crooked tubular construction.

Background

An endoscope applicable to industrial use and medical use is provided with an insertion portion to be inserted into a living body or a tube. Generally, in an endoscope having a flexible insertion portion, a controllable bending portion is provided on a distal end side of the insertion portion. The bending portion can perform a bending operation in accordance with an operation of an operation device provided in the operation portion. Therefore, in the endoscope having the bending portion, the direction of the observation portion provided at the distal end portion can be directed in a desired direction by the operation device.

In the invention patent application No. CN200510076111.1, there is disclosed a bendable part (8 '), the bendable part (8') being disposed at a distal end of an insertion tube of an endoscope, comprising: -a plurality of pipe sections (9 '), each of said pipe sections (9 ') having a connecting means (11), which connecting means (11) cooperate with the connecting means (11) of an adjacent pipe section (9 '); and a control line with which the bending of the bendable portion (8') can be controlled; wherein the respective connecting means (11) of a pipe section (9 ') are arranged such that they project axially from their faces (12 and 13, respectively) and are positioned within a housing (15') of the pipe section (9 ') such that they do not exceed the thickness of the housing, wherein the connecting means (11) arranged on the faces (12 and 13, respectively) of adjacent pipe sections (9') and positioned opposite one another complement one another in a hinge-type connection.

Patent document CN201280041664.1 discloses a bending portion having a bending block group in which a plurality of bending pieces are rotatably and continuously provided, the bending block group being formed by cutting a rigid tube to form bending pieces, and an engaging portion which is formed by forming a convex portion on one side of the bending pieces and a concave portion on the other side of the bending pieces and rotatably connects the bending pieces, wherein the engaging portion includes: a 1 st engaging part which is composed of a 1 st convex part formed on one side of the bending block by cutting and a 1 st concave part formed on the other side of the bending block at the same time and used for sliding the 1 st convex part; and a 2 nd engaging portion including a pair of 2 nd convex portions formed on the other side of the bending piece through the 1 st concave portion by cutting and a pair of 2 nd concave portions formed on the one side of the bending piece at the same time and allowing the pair of 2 nd convex portions to slide, wherein the bending piece is provided with either a 1 st reinforcing portion for cutting a part of a bottom portion of the 1 st concave portion and widening a bending piece end on one end side or a 2 nd reinforcing portion for widening a bending piece end on the other end side from bottom surfaces of the pair of 2 nd concave portions.

However, in the bending tube structure provided in the above document, the structures of the bending blocks or tube sections constituting the bending tube are the same, so that the two ends of each bending block or tube section need to be designed to be inconsistent and to be capable of being mutually clamped so as to connect the bending blocks or tube sections in series, which increases the complexity of manufacturing and processing, and the clamping angle of each bending block or tube section is consistent with the axial direction of the bending tube, which is easy to cause the tube section to fall off due to loose clamping, thereby affecting the service life of the instrument.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a controllable crooked tubular structure, including a plurality of pipe sections and the second pipe section of the interval series connection that constitute controllable crooked pipe, first pipe section respectively is equipped with C type interlock portion along crooked axial both ends, the second pipe section respectively is equipped with along crooked axial both ends and C type interlock portion complex C type breach and globular arch, when first pipe section and second pipe section are established ties, but the globular arch block of second pipe section is in the C type interlock portion of adjacent first pipe section, make the C type breach that the C type interlock portion of adjacent first pipe section can imbed the second pipe section, follow the bending of controllable crooked pipe behind the block, the C type interlock portion of first pipe section can relative motion in the C type breach of second pipe section.

Preferably, the opening direction of the C-shaped occlusion part forms an included angle of 10-90 degrees with the axial direction of the controllable bending pipe.

Furthermore, one end of each first pipe joint is provided with two C-shaped occlusion parts in the circumferential direction, correspondingly, one end of each second pipe joint is provided with two groups of C-shaped notches and spherical protrusions matched with the C-shaped occlusion parts in the circumferential direction, a crack is formed between the first pipe joint and the second pipe joint after clamping, and the crack extends in the circumferential direction of the controllable bending pipe and is arranged at the interval of the C-shaped occlusion parts.

Preferably, the pipe section wall between any two of the slits is provided with one or more slots extending in the circumferential direction of the controllably bent pipe.

Furthermore, the control device comprises one or more traction wires which penetrate through one end of the controllable bending pipe and are fixedly connected with the first pipe section or the second pipe section which is positioned at the outermost end of the other end of the controllable bending pipe.

Preferably, the first pipe section and the second pipe section are further provided with one or more fixing parts for fixing the traction wire.

Furthermore, the fixing parts are uniformly distributed on the circumference of the first pipe section or the second pipe section.

Preferably, the fixed part is a circular pipe fixedly connected to the inner wall of the first pipe section or the second pipe section.

To sum up, the utility model discloses a controllable bent tube structure is established ties by the different tube coupling interval of two kinds of structures and is formed to the design along body axial both ends of every kind of tube coupling is central symmetrical structure, just so can simplify processing technology, increases the simplicity of manufacturing, simultaneously the utility model discloses a block structural design is very ingenious, can increase the inseparable degree and the firm degree of each mutual block of tube coupling, and to the nimble control of bending angle when can guaranteeing to bend, generally speaking, the utility model discloses a structural design has very good practical value.

In order to make the above and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The present invention will be described with reference to the accompanying drawings.

Fig. 1 is a schematic view of an overall structure of a controllable bending pipe disclosed in an embodiment of the present invention;

fig. 2 is a schematic structural view of a first pipe joint and a second pipe joint disclosed in an embodiment of the present invention;

fig. 3 is a side view in one direction of a controllably bent tube as disclosed in an embodiment of the present invention;

fig. 4 is a side view of another orientation of a controllably bent tube as disclosed in an embodiment of the present invention;

fig. 5 is a schematic view of the overall structure of the bending state of the controllable bending pipe disclosed in the embodiment of the present invention;

fig. 6 is a partially enlarged schematic view of a bending state of the controllable bending tube disclosed in the embodiment of the present invention.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.

The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, which, however, may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of thoroughly and completely disclosing the present invention and fully conveying the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments presented in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

The structure of the controlled bending pipe 100 shown in fig. 1 is clearly visible, and includes a plurality of first pipe joints 10 and second pipe joints 20 in a circular pipe shape, which are connected in series at intervals, the first pipe joints 10 are respectively provided with a C-shaped engagement portion 11 at both ends in the axial direction of the controlled bending pipe, the second pipe joints 20 are respectively provided with a C-shaped notch 21 and a spherical protrusion 22 which are matched with the C-shaped engagement portion 11 at both ends in the axial direction of the controlled bending pipe, when the first pipe joints 10 and the second pipe joints 20 are connected in series, the spherical protrusion 22 of the second pipe joint 29 can be engaged with the C-shaped engagement portion 11 of the adjacent first pipe joint 10, so that the C-shaped engagement portion 11 of the adjacent first pipe joint 10 can be inserted into the C-shaped notch 21 of the second pipe joint 20, and the engaged with the bending of the controlled bending pipe 100, and the C-shaped engagement portion 11 of the first pipe joint 10 can relatively move in the C-shaped protrusion 21 of the second pipe joint 20.

Specifically, if the pipe joints are required to be connected together and can be pivoted without using additional devices such as bolts, one end of each pipe joint is required to be provided with a clamping structure to clamp or fasten the protruding part at the other end of the adjacent pipe joint, the embodiment of the present invention adopts the mutual fastening of two pipe joints with different structures to achieve the above-mentioned object, the two different pipe joints are designed to be central symmetrical structures along the two ends of the pipe body in the axial direction, specifically, the two ends of the first pipe joint 10 are respectively provided with a C-shaped engaging part 11, the C-shaped engaging parts 11 at the two ends are designed to be central symmetrical, the two ends of the second pipe joint 20 are respectively provided with a set of C-shaped notch 21 and a spherical protrusion 22 which are matched with the C-shaped engaging part 11, the spherical protrusion 22 can be suitably fastened in the C-shaped engaging part 11 of the first pipe joint 10, and simultaneously, the C-shaped part 11 of the first pipe joint 10 can be just embedded in the C-shaped notch 21 of the second pipe joint, in this way, the first pipe joint 10 and the second pipe joint 20 can be mutually clamped and connected in series at intervals, when the controllable bending pipe 100 is bent or stretched, the C-shaped engaging part 11 of the first pipe joint 10 can relatively move in the C-shaped notch 21 of the second pipe joint 20, and fig. 6 of the embodiment can be understood that the C-shaped engaging part 11 slides in the C-shaped notch 21 to provide a space for bending the pipe body, so that the flexibility of bending is ensured; meanwhile, the spherical bulge 22 is clamped in the center of the C-shaped occlusion part 11, so that the connection stability between the pipe sections is ensured.

The embodiment of the utility model provides an in first tube coupling 10 and second tube coupling 20 simple structure, accessible laser cutting machine-shaping, processing low cost, and the yield is high. The material of the tube walls of the first tube section 10 and the second tube section 20 is preferably a metal material, such as sus304 and sus316, or a nickel titanium alloy. Non-metallic materials such as nylon, Polyurethane (PU), thermoplastic polyurethane elastomer rubber (TPU), polyvinyl chloride (PVC), thermoplastic elastomer (TPE), and various plastic materials may also be used.

In a preferred embodiment of the present invention, as shown in fig. 2, a first included angle r formed by the opening direction of the C-shaped engaging portion 11 of the first pipe joint 10 and the axial direction of the controllable bending pipe 100 may be 10 ° to 90 °, and the opening direction of the C-shaped engaging portion is offset from the axial direction of the controllable bending pipe, so that when the pipe body is bent or stretched and deformed, the spherical protrusion of the second pipe joint engaged therein is difficult to fall off from the opening of the C-shaped engaging portion along the axial direction of the pipe body, thereby increasing the connection stability; furthermore, the best clamping limiting effect can be obtained within the range, the convenience of the connection process can be achieved, and the stable limiting effect can be obtained, so that the method can be well applied in practice.

The embodiment of the utility model provides an in one end of first tube coupling 10 can stand out on the circumference and set up a plurality of C type interlock portions 11 to satisfy the crooked direction requirement of different application scenes. In another preferred embodiment of the present invention, as shown in fig. 1-4, each first pipe section 10 is provided with two opposite C-shaped engaging portions 11 on one end of the circumference, two sets of C-shaped notches 21 and spherical protrusions 22 are correspondingly provided on the second pipe section 20 on the circumference, which are matched with the C-shaped engaging portions 11, a gap 30 is provided between the first pipe section 10 and the second pipe section 20 after the clamping, the gap 30 is spaced from the C-shaped engaging portions and extends along the circumference of the controllable bending pipe, the controllable bending pipe of this embodiment can be bent in two directions under the control of the control device, the gap 30 provides a bending space for the bending of the controllable bending pipe 100, as shown in fig. 5 and 6, when the controllable bending pipe is bent in one direction, the C-shaped engaging portion 11 of the first pipe section 10 is displaced in the C-shaped notch 21 of the adjacent second pipe section 20, specifically, and rotates around the spherical protrusion 22 by a certain angle, or it can be understood that the controlled bending pipe 100 in this embodiment can be bent in two directions by sliding along the C-shaped notch 21 and arranging the opposite two side slits 30 separating the C-shaped engaging portion 11, so that the slit on one side is increased and the slit on the other side is decreased to satisfy the space required for bending the pipe body, and all the above changes are generated reversely when the controlled bending pipe is bent to the other side. Those skilled in the art will appreciate that the design of the C-shaped engaging portion of the first pipe section or the C-shaped notch and the spherical protrusion of the second pipe section should not be limited to the positions and numbers provided in the embodiment, and can be designed according to the specific application to meet the requirements of different bending directions.

As can be seen from fig. 3 and 4, one or more grooves 31 may be further disposed between the gaps 30 formed by the first pipe joint 10 and the second pipe joint 20, the grooves 31 extend in the circumferential direction of the pipe joint 10, and the grooves 31 may be circular, square, or elongated. The two parallel elongated grooves 31 are formed between the gaps 30 of each pipe section 10 shown in fig. 4, and the grooves 31 can further provide the space for bending the pipe body, increase the bending angle range of the controllable bending pipe, enhance the flexibility of the pipe body, and reduce the weight and the manufacturing cost of the pipe body.

In order to allow the user to better control the controllable bending device, in one embodiment of the present invention, the first pipe section 10 and the second pipe section 20, which are connected in series at intervals, are also controlled by the control device. Further, the control device is preferably one or more traction wires, and is used for controlling the controllable bending tube 100 formed after serial connection to bend towards one or more directions, the traction wires penetrate through one end of any tube section of the controllable bending tube 100 and are fixedly connected with the tube section located at the outermost end of the other end of the controllable bending tube 100, when an external force is applied to the traction wires, namely the traction wires are pulled, the first tube section 10 or the second tube section 20 fixedly connected with the traction wires can be driven to move, at the moment, the C-shaped occlusion part 11 and the spherical protrusion 22 rotate, when the C-shaped occlusion part 11 rotates to the limit position of the C-shaped notch 21, the traction wires are continuously pulled, the adjacent second tube section 20 or the first tube section 10 can be continuously driven to rotate, and therefore the whole bending device is bent; after the bending device is bent to the desired angle by the user, the external force applied to the bending device is removed and the pull wire is fixed, so that the bending device is kept in the bending position.

Further, in an embodiment of the present invention, the pulling portion is preferably a steel wire, but not limited thereto, and the pulling portion may be any filament-like structure, and any metal or non-metal material may be used for the filament-like structure.

In order to better match the traction wire with the bending device and prevent the traction wire from moving in the first pipe joint 10 or the second pipe joint 20 of the bending device to affect the bending effect, in an embodiment of the present invention, one or more fixing portions for fixing the traction wire may be further disposed on the first pipe joint 10 or the second pipe joint 20. In one embodiment of the present invention, it may be preferable to arrange one or two pull wires as a control device in the first pipe section 10 or the second pipe section 20 connected in series at intervals so that the controllable bending device can bend towards one or two directions. Further, in this embodiment, when the first pipe joint 10 or the second pipe joint 20 is provided with a plurality of fixing portions, the plurality of fixing portions are uniformly distributed on the circumference of the first pipe joint 10 or the second pipe joint 20, so as to ensure that the bending device can be bent in all directions.

Furthermore, the fixing portion may be a circular tube fixedly connected to the inner wall of the first pipe section 10 or the second pipe section 20, or may be a wire groove formed on the inner wall of the first pipe section 10 or the second pipe section 20. The traction wire is fixed through the fixing part, so that the failure of the controllable bending device caused by the slippage of the traction wire can be prevented. The utility model relates to a controllable bending apparatus can utilize the control part to bend the festival group according to user's needs to can bend towards any direction that the user needs, it is nimble convenient. While the above provides a preferred means of controlling the controllably bendable tube, it will be appreciated by those skilled in the art that a variety of means or devices for controlling the bending of the controllably bendable tube in a desired direction may be practiced, and are not limited to the means provided in the preferred embodiment.

To sum up, the utility model relates to a controllable bent tube structure is established ties by the different tube coupling interval of two kinds of structures and is formed to the design along body axial both ends of every kind of tube coupling is central symmetrical structure, just so can simplify processing technology, increases the simplicity of manufacturing, simultaneously the utility model discloses a block structural design is very ingenious, can increase the inseparable degree and the firm degree of each mutual block of tube coupling, and to the nimble control of bending angle when can guaranteeing to bend, generally speaking, the utility model discloses a structural design has very good practical value.

Furthermore, the above-described embodiments of the present invention are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims.

Claims

1. A controllable bending pipe structure is characterized by comprising a plurality of round pipe-shaped first pipe joints and second pipe joints which are connected in series at intervals and form the controllable bending pipe, the two ends of the first pipe section along the axial direction of the bending pipe are respectively provided with a C-shaped occlusion part, the two ends of the second pipe section along the axial direction of the bending pipe are respectively provided with a C-shaped notch and a spherical bulge which are matched with the C-shaped occlusion part, when the first pipe joint and the second pipe joint are connected in series, the spherical bulge of the second pipe joint can be clamped with the C-shaped occlusion part of the adjacent first pipe joint, so that the C-shaped occlusion part of the adjacent first pipe joint can be embedded into the C-shaped notch of the second pipe joint and is bent along with the controllable bending pipe after being clamped, the C-shaped bite of the first pipe section is relatively movable in the C-shaped notch of the second pipe section.

2. A controuably curved tubular structure as claimed in claim 1, wherein the direction of the opening of said C-shaped bite is at an angle in the range of 10 ° to 90 ° to the axial direction of said controuably curved tubular.

3. The structure of claim 1, wherein two C-shaped engaging portions are disposed at one end of each first pipe section in a circumferential direction, and two sets of C-shaped notches and spherical protrusions are disposed at one end of each second pipe section in a circumferential direction, and after the first pipe section and the second pipe section are engaged with each other, a gap is formed between the first pipe section and the second pipe section, and the gap extends in the circumferential direction of the controlled bending pipe and is spaced from the C-shaped engaging portions.

4. A controuably curved tubular structure as claimed in claim 3, wherein one or more slots are provided in the wall of the tubular section between any two of said nips, said slots extending circumferentially of said controuably curved tubular.

5. The structure of claim 1, wherein the tube comprises one or more pull wires threaded through one end of the tube and fixedly attached to the first or second tube segments at an outermost end of the tube at the other end.

6. A controllably bendable tube structure according to claim 5, wherein the first tube section and the second tube section are further provided with one or more anchors for anchoring the pull wire.

7. A controuably curved tubular structure as claimed in claim 6, wherein said securing portions are both circumferentially disposed about said first tubular section or said second tubular section.

8. A controlled bend tube structure as claimed in claim 7, wherein the anchoring portion is a circular tube fixedly attached to the inner wall of the first or second tube section.