CN108433692A - The Joining Technology and connection structure of a kind of endoscope elder generation end and snake bone - Google Patents

Abstract

The invention discloses a connection process between the tip end of an endoscope and a snake bone, which comprises the following steps: Step 1, enlarging the aperture of the tube joint at the end of the snake bone. Step 2. Opening the circumferential surface of the pipe joint at the end of the snake bone after reaming. Step 3. Insert the connecting part of the tip end of the endoscope into the reamed tube hole at the end of the snake bone. Step 4. Weld and fix the connecting part of the tip end of the endoscope and the tube section at the end of the snake bone at the opening. Under the premise of not increasing the length of the connection position and the overall outer diameter of the snake bone, this connection process expands the aperture of the end pipe joint and opens on it, and then welds the connecting part of the endoscope end with the snake bone at the opening The realization of the connection will not reduce the flexibility of the snake bone, and at the same time, due to the welding connection, the snake bone and the tip end are firmly connected and will not fall off. The invention also discloses a connection structure between the tip end of the endoscope and the snake bone made by the connection process, which has the advantages of simple structure, strong flexibility and firm connection.

Description

A connection process and connection structure between endoscope tip and snake bone

technical field

The invention relates to the technical field of endoscopes, in particular to a connection process and a connection structure between a tip end of an endoscope and a snake bone.

Background technique

There are two main ways to connect the tip of the traditional endoscope to the snake bone: (1) by enlarging the diameter of the snake bone, the tip end is directly installed on the snake bone. Although this connection process can greatly shorten the length of the connection part, the outer diameter of the product is greatly increased due to the increase in the outer diameter of the snake bone; Connect with the snake bone and the ring part. This connection method can complete the connection without greatly increasing the outer diameter of the connection part, but the length of the connection part needs to be increased. Both of the above two methods lead to an increase in the parts that cannot be bent, which reduces the flexibility of the snake bone. sex.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a connection process between the tip end of the endoscope and the snake bone, which is simple in process, firm in connection and does not reduce the flexibility of the snake bone.

The invention also provides a connection structure between the tip end of the endoscope and the snake bone with simple structure, strong flexibility and firm connection.

The technical scheme of the connection process of endoscope tip head and snake bone of the present invention is: this process comprises the following steps:

Step 1. Reaming: Enlarging the diameter of the tube joint at the end of the snake bone.

Step 2. Opening: open the circumferential surface of the pipe joint at the end of the snake bone after reaming.

Step 3. Installation: Insert the connecting part of the tip end of the endoscope into the tube joint hole at the end of the snake bone after the hole has been reamed.

Step 4. Welding: Weld and fix the connecting part of the tip end of the endoscope and the tube section at the end of the snake bone at the opening.

As an improvement of the above technical solution, in the step 1, the inner diameter and outer diameter of the tube joint at the end of the snake bone are enlarged through the sheet metal reaming process, so that the diameter after reaming is larger than before by one unit of wall thickness.

As an improvement of the above technical solution, in the step 2, a plurality of openings are opened in the circumferential direction on the circumferential surface of the tube joint at the end of the serpentine by means of laser cutting or wire cutting.

As an improvement of the above technical solution, in the step 3, the outer diameter of the connecting part of the leading end is processed so that the outer diameter is 0.05 mm smaller than the diameter of the tube joint at the end of the snake bone.

As an improvement of the above technical solution, the opening is in the shape of a rectangle with a width of 1.5 mm and a length of 2.5 mm.

As an improvement of the above technical solution, in step 4, laser welding or soldering is used to weld and fix the connecting part of the tip end of the endoscope and the tube section at the end of the snake bone at the opening.

The present invention utilizes the technical scheme adopted in the connecting structure of the tip end of the endoscope formed by the connecting process and the snake bone to be:

A connection structure between an endoscope tip and a snake bone, comprising a snake bone and a connecting portion of an endoscope tip head, the snake bone is composed of multiple bendable tubes, and it is characterized in that: the end of the snake bone The aperture of the pipe section is larger than that of other pipe sections. There are multiple openings on the circumferential surface of the end pipe section of the snake bone. The connecting part of the tip of the endoscope is inserted into the end pipe section, and the two are fixed at the openings by welding. .

As an improvement of the above technical solution, the number of openings is four, which are evenly distributed along the circumferential direction of the circumferential surface of the terminal pipe joint.

As an improvement of the above technical solution, the opening is rectangular.

As an improvement of the above technical solution, the aperture diameter of the end tube section of the snake bone is one unit wall thickness larger than the aperture diameter of other tube sections.

The beneficial effects of the present invention have:

This connection process improves the structure of the last section of the snake bone, without increasing the length of the connection position or the overall outer diameter of the snake bone, by enlarging the aperture of the end tube section and opening on it, and then by welding the inner joint at the opening. The connecting part of the tip end of the speculum is connected to the snake bone, which will not reduce the flexibility of the snake bone. At the same time, due to the welding connection, the connecting part of the snake bone and the tip end of the endoscope is firmly connected and will not fall off. At the same time, the connection structure made by this connection process has the advantages of simple structure, strong flexibility and firm connection.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment, wherein:

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is a sectional view of an embodiment of the present invention;

Figure 3 is an exploded view of an embodiment of the present invention.

Detailed ways

Referring to Fig. 1 to Fig. 3, a connection structure between an endoscope tip and a snake bone includes a snake bone 1 and an endoscope tip connection part 2, and the snake bone 1 is composed of multiple bendable tube segments, The aperture of the end pipe section 3 of the snake bone is larger than that of other pipe sections, and the circumference surface of the end pipe section 3 of the snake bone 1 is provided with a plurality of openings 4, and the tip end connecting part 2 of the endoscope is inserted into the end pipe In section 3, the two are fixed by welding at opening 4.

The number of openings 4 is four, which are evenly distributed along the circumferential surface of the end pipe section 3. The openings 4 are rectangular, and the diameter of the end pipe section 3 of the snake bone 1 is larger than that of other pipe sections by one unit wall thickness.

When making the connection structure between the tip end of the above-mentioned endoscope and the snake bone, the steps adopted are as follows:

Step 1. Reaming: Enlarging the diameter of the tube joint at the end of the snake bone.

Step 2. Opening: open the circumferential surface of the pipe joint at the end of the snake bone after reaming.

Step 3. Installation: Insert the connecting part of the tip end of the endoscope into the tube joint hole at the end of the snake bone after the hole has been reamed.

Step 4. Welding: Weld and fix the connecting part of the tip end of the endoscope and the tube section at the end of the snake bone at the opening.

Wherein in step 1, through the process of sheet metal reaming, the inner and outer diameters of the pipe joint 3 at the end of the snake bone are reamed, so that the diameter after reaming is larger than before by one unit of wall thickness. In this embodiment, one unit The length of the wall thickness is 0.15mm. In step 2, laser cutting or wire cutting is used to open a plurality of openings 4 in the circumferential direction on the circumferential surface of the tube joint 3 at the end of the snake bone. The openings 4 are rectangular with a width of 1.5 mm and a length of 2.5 mm. The openings should avoid It is processed by CNC or milling machine to avoid deformation caused by excessive processing stress. In the step 3, the outer diameter of the endoscope connecting portion 2 is processed so that its outer diameter is 0.05 mm smaller than the aperture of the serpentine end pipe joint 3 to facilitate installation, and the outer diameter of the endoscope connecting portion 2 is too large. It is not easy to install if the outer diameter is too small. In step 4, laser welding or soldering is used to weld and fix the connecting part 2 of the tip end of the endoscope and the tube section 3 at the end of the snake bone at the opening 4.

By improving the structure of the last section of the snake bone 1, this connection process realizes the connection between the tip and the snake bone without increasing the length of the connection position and the overall outer diameter of the snake bone, without reducing the flexibility of the snake bone, and at the same time Due to the welding connection, the snake bone is firmly connected with the tip and will not fall off. At the same time, the connection structure made by this connection process has the advantages of simple structure, strong flexibility and firm connection.

The above is only a preferred embodiment of the present invention, but the present invention is not limited to the above examples, as long as it achieves the technical effect of the present invention by any same or similar means, it should belong to the protection scope of the present invention.

Claims (10)

1. the Joining Technology of a kind of endoscope elder generation end and snake bone, which is characterized in that include the following steps：

Step 1, reaming：To snake bone end tube coupling expanded hole diameter.

Step 2, opening：It is open to the snake bone tip tube pitch circle circumferential surface after reaming.

Step 3, installation：Endoscope elder generation end interconnecting piece is inserted into the snake bone tip tube knothole after reaming.

Step 4, welding：Endoscope elder generation end interconnecting piece and snake bone end tube coupling are welded and fixed in opening.

2. the Joining Technology of a kind of endoscope elder generation end and snake bone according to claim 1, which is characterized in that the step In 1, reaming is carried out to snake bone end tube coupling internal orifice dimension and outer aperture by the technique of metal plate reaming, makes the diameter ratio after its reaming One unit greater wall thickness before.

3. the Joining Technology of a kind of endoscope elder generation end and snake bone according to claim 1, which is characterized in that the step In 2, multiple openings are circumferentially opened up on snake bone tip tube pitch circle circumferential surface by the way of laser cutting or wire cutting.

4. the Joining Technology of a kind of endoscope elder generation end and snake bone according to claim 1, which is characterized in that the step In 3, first end interconnecting piece outer diameter is processed, keeps its outer diameter smaller 0.05mm than snake bone tip tube knothole diameter.

5. the Joining Technology of a kind of endoscope elder generation end and snake bone according to claim 3, which is characterized in that the opening It is rectangle, width 1.5mm, long 2.5mm.

6. the Joining Technology of a kind of endoscope elder generation end and snake bone according to claim 1, which is characterized in that the step In 4, endoscope elder generation end interconnecting piece and snake bone end tube coupling are welded and fixed in opening by the way of Laser Welding or soldering.

7. a kind of connection structure of the endoscope elder generation end and snake bone formed using technique as described in claim 1, including snake bone With endoscope elder generation end interconnecting piece, the snake bone is made of the flexible tube coupling of more piece, which is characterized in that the end of the snake bone Other tube coupling apertures of tube coupling aperture ratio are big, and multiple openings, the endoscope are offered on the tip tube pitch circle circumferential surface of the snake bone In first end interconnecting piece insert end tube coupling, the two is in opening by being welded and fixed.

8. the connection structure of a kind of endoscope elder generation end and snake bone according to claim 7, which is characterized in that the opening Quantity is four, is circumferentially uniformly distributed along tip tube pitch circle circumferential surface.

9. the connection structure of a kind of endoscope elder generation end and snake bone according to claim 7 or 8, which is characterized in that described Opening is rectangle.

10. the connection structure of a kind of endoscope elder generation end and snake bone according to claim 9, which is characterized in that the snake The length of other one unit greater wall thickness in tube coupling aperture of the tip tube section aperture ratio of bone.