Bent tube device implementing a metal-rubber combination

Abstract

The present application relates to a kind of realization metal and rubber combined bending pipe device, including metal joint ring, profiled net type rubber piece and traction steel wire assembly, the metal joint ring and profiled net type rubber piece are connected as bending assembly by hot melt rubber, and multiple bending assembly is combined to form bending pipe, the traction steel wire assembly is inserted into the steel wire limiting groove of each metal joint ring, and the other end of traction steel wire bends bending pipe to different direction.The realization metal and rubber combined bending pipe device using the present application, combination fixed steel wire rope, and the traction effect can achieve ideal bending function, and the performance is reliable.The combination design of stainless steel joint ring and rubber of the present application, i.e.ensures the size relationship of inner diameter and outer diameter ratio, and avoids potential risks that may be caused by using laser cutting method.The present application is disposable, reduces complex process, and greatly reduces cost, and is suitable for widely used in small-diameter endoscope.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to the field of endoscopes, and more particularly to a bending tube device combining metal and rubber. BACKGROUND

[0002] At present, the bending tube used in endoscopes is basically composed of each stainless steel ring joint through riveting principle. Since the inner and outer diameters of the bending tube are closely related to the amount of the hidden objects in the bending tube, the use of stainless steel through laser cutting method is also used to increase the space, and the traction wire is also inserted in the form of punching groove and welded on the first section of the bending tube. The laser cutting bending tube does not use rivets but cuts a certain width for bending to replace the role of rivets. However, the biggest risk of this laser cutting is that because the elastic stainless steel material is used, the cutting part will form a knife edge after breaking, which will seriously damage the surface of the cavity when the endoscope exits the human body. There are also various forms of bending tubes formed by connecting the concave-convex grooves after plastic die casting. Since the thickness and internal structure of the insertion tube of the endoscope have a close size relationship, in the case of thin diameter, how to ensure the large inner diameter space has been a problem for the designers of endoscopes. The new laser cutting or plastic die casting bending tube without rivets has obvious defects and deficiencies. SUMMARY

[0003] The present application overcomes the above-mentioned shortcomings of the prior art and provides a bending tube device combining metal and rubber, which is simple in structure, convenient to use and widely applicable.

[0004] In order to achieve the above-mentioned purpose, the bending tube device combining metal and rubber of the present application is as follows:

[0005] The bending tube device combining metal and rubber, which mainly comprises a metal joint ring, a special-shaped mesh rubber part and a traction wire assembly, the metal joint ring and the special-shaped mesh rubber part are connected as a bending assembly through hot melt rubber, a plurality of bending assemblies are combined to form a bending tube, the traction wire assembly is inserted into the steel wire limiting groove of each metal joint ring, and the other end of the traction wire assembly pulls the bending tube to bend in different directions.

[0006] Preferably, the traction wire assembly comprises a limiting head and a traction wire, and the limiting head is installed at the front end of the traction wire.

[0007] Preferably, the inner side of the metal joint ring has a traction wire limiting groove, the limiting head at the front end of the traction wire assembly is fixed on the traction wire limiting groove of the front joint of the bending tube, and the diameter of the limiting head is greater than the diameter of the traction wire limiting groove.

[0008] Preferably, the traction steel wire limiting groove is a slope type, and the groove has a downwardly inclined slope.

[0009] Preferably, the metal ring has two or four traction steel wire limiting grooves uniformly distributed thereon.

[0010] Preferably, the metal ring has a plurality of micro-holes at the joint of the metal ring and the profiled net-shaped rubber piece, and the metal ring and the profiled net-shaped rubber piece are tightly fixed through the plurality of micro-holes.

[0011] Preferably, the profiled net-shaped rubber piece has a plurality of profiled net-shaped rubber structures, the profiled net-shaped rubber structures have gaps in the middle, and the profiled net-shaped rubber structures protrude from the surface of the profiled net-shaped rubber piece and have a rebounding force.

[0012] Preferably, the device further comprises a front curved tube connector and a rear curved tube connector, the front curved tube connector is installed in front of the frontmost profiled net-shaped rubber piece, and the rear curved tube connector is installed behind the rearmost profiled net-shaped rubber piece.

[0013] The curved tube device for combining metal and rubber of the present application has the advantages that the combination of the stainless steel ring and the rubber ensures the size relationship of the inner diameter and the outer diameter ratio and avoids potential risks that may be caused by the use of a laser cutting method, the device is disposable, the complicated process is reduced, the cost is greatly reduced, and the device is suitable for wide application in a thin diameter endoscope. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 FIG. 1 is a structural schematic diagram of the curved tube device for combining metal and rubber of the present application.

[0015] Figure 2 FIG. 2 is a connection schematic diagram of the metal ring and the profiled net-shaped rubber piece of the curved tube device for combining metal and rubber of the present application.

[0016] Figure 3 FIG. 3 is a partial schematic diagram of the joint of the metal ring and the profiled net-shaped rubber piece of the curved tube device for combining metal and rubber of the present application.

[0017] Figure 4 FIG. 4 is a structural schematic diagram of the traction steel wire assembly of the curved tube device for combining metal and rubber of the present application.

[0018] Figure 5 FIG. 5 is a structural schematic diagram of the traction steel wire assembly and the profiled net-shaped rubber piece of the curved tube device for combining metal and rubber of the present application.

[0019] Figure label:

[0020] 1. Bend the pipe before connecting

[0021] 2. Irregularly shaped mesh rubber parts

[0022] 3 Metal couplings

[0023] 4. After bending the pipe, connect

[0024] 5 Traction wire assembly

[0025] 6 Traction wire limiting groove

[0026] 7. Miniature round holes

[0027] 8. The voids contained in the rubber structure

[0028] 9 Limit Heads

[0029] 10 traction steel wires Detailed Implementation

[0030] To more clearly describe the technical content of the present invention, the following description is provided in conjunction with specific embodiments.

[0031] The present invention provides a bending tube device for combining metal and rubber, comprising a metal connecting ring, a shaped mesh rubber component, and a traction steel wire assembly. The metal connecting ring and the shaped mesh rubber component are connected by hot-melt rubber to form a bending assembly. Multiple bending assemblies are combined to form a bending tube. The traction steel wire assembly is inserted into the steel wire limiting groove of each metal connecting ring, and the other end of the traction steel wire pulls the bending tube to bend in different directions.

[0032] In a preferred embodiment of the present invention, the traction wire assembly includes a limiting head and a traction wire, wherein the limiting head is installed at the front end of the traction wire.

[0033] In a preferred embodiment of the present invention, the inner side of the metal ring has a traction wire limiting groove, and the limiting head at the front end of the traction wire assembly is fixed on the traction wire limiting groove connected to the front of the bent tube. The diameter of the limiting head is larger than the diameter of the traction wire limiting groove.

[0034] In a preferred embodiment of the present invention, the traction wire limiting groove is inclined, and the groove has a downwardly sloping surface.

[0035] In a preferred embodiment of the present invention, two or four traction wire limiting grooves are evenly distributed on the metal connecting ring.

[0036] In a preferred embodiment of the present invention, the metal connector has a plurality of micro-holes located at the junction of the metal connector and the irregular mesh rubber component, thereby tightly fixing the metal connector and the irregular mesh rubber component through the plurality of micro-holes.

[0037] In a preferred embodiment of the present invention, the irregular mesh rubber part has multiple irregular mesh rubber structures, the irregular mesh rubber structures have gaps in the middle, and the irregular mesh rubber structures protrude from the surface of the irregular mesh rubber part and have elasticity.

[0038] In a preferred embodiment of the present invention, the device further includes a front bend tube and a rear bend tube, wherein the front bend tube is installed in front of the foremost irregular mesh rubber component, and the rear bend tube is installed behind the foremost irregular mesh rubber component.

[0039] In a specific embodiment of the present invention, a bending tube device combining metal and rubber is disclosed, which is an integrated bending tube assembly composed of a metal connecting ring, a special-shaped mesh rubber component, and a traction steel wire assembly with a limit at the front end.

[0040] The metal-rubber combined bending tube device of the present invention includes a metal coupling ring, an irregular mesh rubber component, and a traction steel wire assembly with a limit at the front end. Typically, in embodiments of the present invention, the metal coupling ring is a curved stainless steel tube coupling ring with a grooved process hole.

[0041] The metal coupling and the irregularly shaped mesh rubber component are connected by hot-melt rubber to form a flexible assembly. After the assembly is completed, the traction wire assembly is inserted into the groove of each section, and the front end is fixed to the traction wire limiting groove connected to the front of the bending tube. The bending tube is pulled and bent in different directions at the other end of the wire, and the bending shape and the bending angles in the up and down directions (or the four directions of up, down, left, and right) are observed to see if they meet the design requirements.

[0042] The curved surface of the metal connector is designed to increase the area available for bonding with the rubber, thereby enhancing its strength.

[0043] The groove space of the metal coupling has the function of releasing pressure when the tube is bent, avoiding the risk of detachment caused by the accumulation of pressure and stress after bending and the formation of shear force.

[0044] When the metal connector is die-cast and assembled with the irregular mesh rubber part, there are micro-holes at the joint between the metal connector and the irregular mesh rubber part. The purpose of these holes is to ensure that the metal connector is tightly fixed to the irregular mesh rubber part and to prevent the risk of falling off when pulled in a straight line.

[0045] The front of the curved tube has two grooves with beveled surfaces, and the diameter of the limiting head at the front end of the traction wire assembly is larger than the diameter of the grooves. This ensures that the wire rope will not be pulled off when the traction wire assembly is under tension.

[0046] The rubber fused to the metal ring has an irregular mesh structure. The gaps in its special mesh structure prevent the rubber from squeezing against each other when bent, and at the same time provide elasticity when released.

[0047] The circular protrusions of the mesh structure serve two purposes: first, to absorb stress when bent; and second, to fix each other in place when stretched to prevent the bending direction from shifting.

[0048] The gap spacing of the mesh structure of the rubber component is designed according to different bending angles.

[0049] The gaps in the mesh structure of the rubber component ensure both the bending angles in the upper and lower directions and keep the bent tube in the same plane when bending.

[0050] This invention uses a mold processing method combined with snake bone and rubber to replace the traditional riveting method, thereby realizing the function of bending pipe.

[0051] The advantages of curved tubes synthesized by die casting are that the straightness can be controlled and the flexibility during bending can be adjusted according to the hardness of the rubber, overcoming the disadvantage of the difficulty in controlling the tightness of traditional riveting methods.

[0052] Using rubber as an alternative to riveting can avoid the risk of sharp metal burrs caused by improper riveting, which could damage internal components during bending or puncture the outer rubber covering, leading to water leakage and other quality instability issues.

[0053] For the specific implementation scheme of this embodiment, please refer to the relevant descriptions in the above embodiments, which will not be repeated here.

[0054] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0055] It should be noted that in the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means at least two.

[0056] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] The bending tube device of this invention, which combines metal and rubber, along with a fixed steel wire rope, achieves ideal bending performance with reliable operation. The design of the stainless steel coupling combined with the rubber ensures the optimal dimensional relationship between the inner and outer diameters while avoiding the potential risks associated with laser cutting. This device is for single use, reducing complex processes and significantly lowering costs, making it suitable for widespread application in small-diameter endoscopes.

[0058] In this specification, the invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. A curved pipe device which realizes the combination of metal and rubber, characterized by, The device comprises a metal joint ring, a profiled net rubber piece and a traction steel wire assembly, the metal joint ring and the profiled net rubber piece are connected as a bending assembly through hot melt rubber, multiple bending assemblies are combined to form a bending pipe, the traction steel wire assembly is inserted into a steel wire limiting groove of each metal joint ring, and the other end of the traction steel wire pulls the bending pipe to bend in different directions. The profiled net rubber piece has multiple profiled net rubber structures, the profiled net rubber structures have gaps in the middle, the profiled net rubber structures protrude from the surface of the profiled net rubber piece and have a rebounding force. The metal joint ring has multiple micro holes, the multiple micro holes are located at the joint of the metal joint ring and the profiled net rubber piece, and the metal joint ring and the profiled net rubber piece are tightly fixed through the multiple micro holes.

2. The bend pipe apparatus implementing the combination of metal and rubber according to claim 1, wherein, The traction steel wire assembly comprises a limiting head and a traction steel wire, and the limiting head is installed at the front end of the traction steel wire.

3. The bend pipe apparatus realizing the combination of metal and rubber according to claim 2, characterized by The inner side of the metal joint ring has a traction steel wire limiting groove, the limiting head at the front end of the traction steel wire assembly is fixed on the traction steel wire limiting groove of the bending pipe front joint, and the diameter of the limiting head is greater than the diameter of the traction steel wire limiting groove.

4. The bend pipe apparatus implementing the combination of metal and rubber according to claim 3, wherein, The traction steel wire limiting groove is a slope type, and the groove has a downward inclined slope.

5. The bend pipe apparatus implementing the combination of metal and rubber according to claim 3, wherein, The metal joint ring uniformly has two or four traction steel wire limiting grooves.

6. The bend pipe apparatus implementing the combination of metal and rubber according to claim 1, wherein, The device further comprises a bending pipe front joint and a bending pipe rear joint, the bending pipe front joint is installed in front of the profiled net rubber piece at the front end, and the bending pipe rear joint is installed behind the profiled net rubber piece at the rear end.

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