Conductive tube connecting structure and endoscope

Abstract

The utility model relates to the technical field of medical instruments, and discloses a conductive tube connecting structure and an endoscope. The conductive tube connecting structure comprises a first conductive tube, a second conductive tube and an annular reed. The first conductive tube is inserted into the second conductive tube, and an annular mounting groove is formed between the first conductive tube and the second conductive tube; the annular reed is made of a conductive material, the annular reed is arranged outside the first conductive tube in a sleeving mode and located in the mounting groove, the annular reed is in conductive abutting connection with the first conductive tube and the second conductive tube respectively, and the annular reed exerts elastic force on the first conductive tube and the second conductive tube respectively. According to the utility model, the annular reed can apply elastic force to the first conductive tube and the second conductive tube, so that the first conductive tube and the second conductive tube are firmly connected and reliably conducted and connected, and the electromagnetic compatibility between the first conductive tube and the second conductive tube can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a conductive tube connection structure and an endoscope. Background Art

[0002] An electronic endoscope is a medical device that integrates optical, mechanical, and electrical technologies. It is connected to peripheral devices such as light source devices and video processors through connectors, and can observe, diagnose, and treat human cavities and organ cavities.

[0003] In order to ensure the stable and reliable operation of the equipment, the equipment is required to have good safety performance and electromagnetic compatibility performance. As an imaging medical device, the electronic endoscope is equipped with an image sensor and a transmission cable for providing image signals. In order to enhance the ability of the image sensor and the transmission cable to be immune to external electromagnetic interference and the ability to resist static electricity, the image sensor and the transmission cable are required to be in a shielding body with continuous conductivity and good conduction. In the structure of the endoscope, the insertion part and the universal cable tube are both shielding bodies with good conduction. They are transferred through some joints and connected to the operating part and the endoscope connector, so that the entire endoscope basically forms a good shielding body.

[0004] In the related art, the connection between the endoscope, cable tube and connector is usually fixed by glue, and the electrical conductivity between the two is only guaranteed by the close contact of the end faces. However, in actual processing, it is difficult to ensure the flatness of the end faces, and some other factors during the bonding process may cause the end faces to separate, resulting in poor electromagnetic compatibility. Utility Model Content

[0005] In view of this, the utility model provides a conductive tube connection structure and an endoscope to solve the problem of poor electromagnetic compatibility caused by unreliable conductive connection between the cable tube and the joint.

[0006] In the first aspect, the utility model provides a conductive tube connection structure, comprising a first conductive tube, a second conductive tube and an annular spring. The first conductive tube is inserted into the second conductive tube, and an annular mounting groove is provided between the first conductive tube and the second conductive tube; the annular spring is made of a conductive material, and the annular spring is sleeved outside the first conductive tube and located in the mounting groove, and the annular spring is respectively in conductive contact with the first conductive tube and the second conductive tube, and the annular spring applies elastic force to the first conductive tube and the second conductive tube respectively, so that the first conductive tube and the second conductive tube are conductive and connected.

[0007] Beneficial effect: During the insertion of the first conductive tube and the second conductive tube, the first conductive tube and the second conductive tube will simultaneously contact the annular spring sheet in an electrically conductive manner and apply pressure to the annular spring sheet. The annular spring sheet is in a compressed state and will apply elastic force to the first conductive tube and the second conductive tube, thereby making the first conductive tube and the second conductive tube firmly connected and reliably conducting and connecting, thereby ensuring the electromagnetic compatibility between the first conductive tube and the second conductive tube. By providing an installation groove between the first conductive tube and the second conductive tube and arranging the annular spring sheet in the installation groove, the installation groove can limit the annular spring sheet, ensuring the shape of the annular spring sheet is stable during installation, preventing the annular spring sheet from moving in a large range due to force during the insertion of the first conductive tube and the second conductive tube, and ensuring the conducting connection between the first conductive tube and the second conductive tube.

[0008] In one embodiment, the annular spring includes an annular body and an elastic protrusion located on the circumferential surface of the body.

[0009] Beneficial effect: By arranging the elastic protrusion on the main body, when the first conductive tube and the second conductive tube are plugged and connected, the first conductive tube and the second conductive tube can form a compression of the elastic protrusion, so that the elastic protrusion can apply elastic force to the first conductive tube and the second conductive tube, ensuring a firm connection between the first conductive tube and the second conductive tube.

[0010] In one embodiment, the elastic protrusion includes a plurality of elastic ribs spaced apart along the circumferential direction, and adjacent elastic ribs are hollowed out.

[0011] Beneficial effect: With this arrangement, when the first conductive tube and the second conductive tube are assembled, the elastic ribs are easily deformed, thereby ensuring that the elastic protrusion can apply elastic force to the first conductive tube and the second conductive tube. When the elastic ribs of the annular spring are subjected to pressure, each elastic rib of the annular spring will independently produce elastic deformation, but no matter which part of the annular spring is deformed, the entire annular spring will apply elastic reaction force to the first conductive tube and the second conductive tube, thereby achieving equal load and full contact at each contact point.

[0012] In one embodiment, along the axial direction of the annular spring leaf, the cross section of the elastic protrusion is arc-shaped or V-shaped.

[0013] Beneficial effect: Such arrangement has a simple structure and is easy to process.

[0014] In one embodiment, the elastic rib includes a first bending section and a second bending section, and the length of the first bending section is greater than the length of the second bending section.

[0015] Beneficial effects: With this arrangement, the elastic rib is V-shaped, but is an asymmetric structure, and a lead-in angle α can be formed between the first bending section with a longer length and the main body, which is convenient for assembly.

[0016] In one embodiment, the elastic protrusion includes a spring sheet, one end of which is connected to the body, and the other end of which extends toward the inside or outside of the body.

[0017] Beneficial effect: This arrangement facilitates the insertion and installation of the first conductive tube, the second conductive tube and the annular spring.

[0018] In one embodiment, there is an introduction angle α between the elastic protrusion and the axis of the body, 15°≤α≤20°; the other end of the spring extends toward the inner side of the body, and the diameter of the circle where the other ends of at least three springs are located is less than or equal to the diameter corresponding to the outer wall of the first conductive tube; or, the other end of the spring extends toward the outer side of the body, and the diameter of the circle where the other ends of at least three springs are located is greater than or equal to the diameter corresponding to the inner wall of the second conductive tube.

[0019] Beneficial effect: By setting the lead-in angle α between the elastic protrusion and the axis of the body, it is helpful for the parts to smoothly enter the appropriate contact position, and the annular spring is kept within the elastic limit, so that the first conductive tube and the second conductive tube can achieve a sufficient contact and conduction effect. Controlling the lead-in angle α within the range of 15° to 20° can ensure that the elastic protrusion can play the role of elastic force and ensure that the lead-in angle α is reasonable, which is convenient for the insertion of the first conductive tube and the second conductive tube.

[0020] In one embodiment, the annular spring is an open ring which is interrupted in the circumferential direction.

[0021] Beneficial effect: By setting the annular spring as an open ring that is disconnected in the circumferential direction, the assembly of the annular spring and the first conductive tube can be facilitated, and the assembly difficulty can be reduced, thereby reducing the defective rate of the assembly of the first conductive tube, the second conductive tube and the annular spring.

[0022] In one embodiment, at least two annular springs are provided at intervals along the axial direction of the first conductive tube.

[0023] Beneficial effect: By providing at least two annular spring sheets, the connection strength between the first conductive tube and the second conductive tube can be further improved.

[0024] In a second aspect, the utility model also provides an endoscope, comprising the conductive tube connection structure of any one of the above technical solutions.

[0025] Beneficial effect: When applied to an endoscope, since the first conductive tube and the second conductive tube in the endoscope are fully conductive on the circumferential surface through the annular spring, it can help to form a good shielding body for the entire endoscope, thereby improving the endoscope's anti-electromagnetic interference capability and anti-static interference capability; and, the use of the conductive tube of the above embodiment reduces the difficulty of assembly and reduces the defective rate of product assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A cross-sectional view of a conductive tube connection structure according to an embodiment of the utility model along the axial direction;

[0028] Figure 2 for Figure 1 Schematic diagram of the structure of the middle annular reed;

[0029] Figure 3 A cross-sectional view along the axial direction of another conductive tube connection structure according to an embodiment of the utility model;

[0030] Figure 4 for Figure 3 Schematic diagram of the structure of the middle annular reed;

[0031] Figure 5 for Figure 4 A schematic structural diagram of the lead-in angle of the annular spring shown;

[0032] Figure 6 A cross-sectional view along the axial direction of another conductive tube connection structure according to an embodiment of the utility model;

[0033] Figure 7 for Figure 6 Schematic diagram of the structure of the middle annular reed;

[0034] Figure 8 for Figure 7 A schematic structural diagram of the lead-in angle of the annular spring shown;

[0035] Fig. 9 is a cross-sectional view of a first conductive tube along the axial direction;

[0036] Fig.10 It is a cross-sectional view of a second conductive tube along the axial direction.

[0037] Description of reference numerals:

[0038] 1. First conductive tube; 11. First tube section; 12. Second tube section; 101. First step surface; 2. Second conductive tube; 21. Third tube section; 22. Fourth tube section; 23. Fifth tube section; 201. Second step surface; 202. Third step surface; 3. Annular spring; 31. Main body; 32. Elastic protrusion; 321. Elastic rib; 3211. First bending section; 3212. Second bending section; 33. Spring piece; 4. Mounting groove. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0040] Combine the following Figures 1 to 10 , describing an embodiment of the utility model.

[0041] According to an embodiment of the utility model, on the one hand, a conductive tube connection structure is provided, comprising a first conductive tube 1, a second conductive tube 2 and an annular spring 3. The first conductive tube 1 is inserted into the second conductive tube 2, and an annular mounting groove 4 is provided between the first conductive tube 1 and the second conductive tube 2; the annular spring 3 is made of a conductive material, and the annular spring 3 is sleeved outside the first conductive tube 1 and located in the mounting groove 4, and the annular spring 3 is respectively in conductive contact with the first conductive tube 1 and the second conductive tube 2, and the annular spring 3 applies elastic force to the first conductive tube 1 and the second conductive tube 2, so that the first conductive tube 1 and the second conductive tube 2 are conductive and connected.

[0042] During the insertion process of the first conductive tube 1 and the second conductive tube 2, the first conductive tube 1 and the second conductive tube 2 will be in conductive contact with the annular spring 3 at the same time, and pressure will be applied to the annular spring 3. The annular spring 3 is in a compressed state and will apply elastic force to the first conductive tube 1 and the second conductive tube 2, so that the first conductive tube 1 and the second conductive tube 2 are firmly connected, and the first conductive tube 1 and the second conductive tube 2 are reliably conductively connected, so that the electromagnetic compatibility between the first conductive tube 1 and the second conductive tube 2 can be ensured.

[0043] The annular spring piece 3 is made of a conductive material because, if an annular spring piece 3 without conductive properties is used, the conductive connection between the first conductive tube 1 and the second conductive tube 2 is only based on end face contact or circumferential surface contact, and surface contact may lead to virtual connection due to factors such as processing errors, and the reliability of the conductive connection is poor, thereby affecting the conductive performance and electromagnetic compatibility of the first conductive tube 1 and the second conductive tube 2; at the same time, the annular spring piece 3 made of non-conductive material will reduce the conductive contact area between the first conductive tube 1 and the second conductive tube 2, thereby affecting the conductive performance and electromagnetic compatibility between the first conductive tube 1 and the second conductive tube 2.

[0044] By providing a mounting groove 4 between the first conductive tube 1 and the second conductive tube 2, and providing the annular spring 3 in the mounting groove 4, the mounting groove 4 can limit the annular spring 3, thereby ensuring that the shape of the annular spring 3 is stable during installation, preventing the annular spring 3 from moving in a large range due to force during the insertion process of the first conductive tube 1 and the second conductive tube 2, and ensuring reliable conduction and connection between the first conductive tube 1 and the second conductive tube 2.

[0045] Specifically, in Figures 1 to 8 In the embodiment shown, the first conductive tube 1 is inserted into the second conductive tube 2, the body 31 of the annular spring 3 is sleeved outside the first conductive tube 1, the body 31 of the annular spring 3 abuts against the inner wall of the second conductive tube 2, and the elastic protrusion 32 of the annular spring 3 abuts against the outer wall of the first conductive tube 1. Of course, it is not limited to this, and the assembly method can be changed according to the position of the elastic protrusion 32.

[0046] In one embodiment, the annular spring 3 includes an annular body 31 and an elastic protrusion 32 located on the circumferential surface of the body 31 .

[0047] Specifically, as long as the elastic protrusion 32 is provided on the body 31, when the first conductive tube 1 and the second conductive tube 2 are plugged and connected, the elastic protrusion 32 can be compressed, so that the elastic protrusion 32 can apply elastic force to the first conductive tube 1 and the second conductive tube 2 to ensure that the first conductive tube 1 and the second conductive tube 2 are firmly connected. Figure 2 , Figure 4 or Figure 7 As shown, the elastic protrusion 32 is arranged at the middle part of the circumferential surface of the body 31 .

[0048] Specifically, the elastic protrusion 32 may be convex toward the inside of the body 31 or toward the outside of the body 31. Regardless of which side of the body 31 the elastic protrusion 32 is disposed on, when the first conductive tube 1 and the second conductive tube 2 are assembled, the elastic protrusion 32 can be compressed and exert elastic force on the first conductive tube 1 and the second conductive tube 2, thereby ensuring the stability of the connection between the first conductive tube 1 and the second conductive tube 2.

[0049] Specifically, along the circumferential direction, the elastic protrusion 32 can be continuous or discontinuous. In the following three embodiments, hollowing is performed, that is, the elastic protrusion 32 is discontinuous.

[0050] In one embodiment, the elastic protrusion 32 includes a plurality of elastic ribs 321 spaced apart along the circumferential direction, and adjacent elastic ribs 321 are hollowed out.

[0051] The plurality of elastic ribs 321 of the elastic protrusion 32 are hollowed out, so that when the first conductive tube 1 and the second conductive tube 2 are assembled, the elastic ribs 321 are easily deformed, thereby ensuring that the elastic protrusion 32 can apply elastic force to the first conductive tube 1 and the second conductive tube 2. Although the elastic ribs 321 are hollowed out and the elastic protrusion 32 is intermittent, since the plurality of elastic ribs 321 are connected to the body 31, when subjected to pressure, each elastic rib 321 of the annular spring 3 will independently produce elastic deformation, but no matter which part of the annular spring 3 is deformed, the entire annular spring 3 will apply elastic reaction force to the first conductive tube 1 and the second conductive tube 2, thereby achieving equal load and full contact at each contact point.

[0052] Since the elastic ribs 321 are arranged at intervals around the body 31 in the circumferential direction, the annular spring 3 simultaneously forms multiple-point contacts with the first conductive tube 1 and the second conductive tube 2 throughout their entire circumferences. On the one hand, the first conductive tube 1 and the second conductive tube 2 can be subjected to elastic force throughout their entire circumferences, thereby ensuring the reliability of the connection of the first conductive tube 1 and the second conductive tube 2 throughout their entire circumferences. On the other hand, the first conductive tube 1, the annular spring 3 and the second conductive tube 2 have a large contact area, a large current carrying capacity and good conductivity.

[0053] In one embodiment, along the axial direction of the annular spring leaf 3 , the cross section of the elastic protrusion 32 is arc-shaped or V-shaped.

[0054] From the axial direction of the annular spring 3, Figure 1 and Figure 2 In the embodiment shown, the cross section of the elastic protrusion 32 is arc-shaped; Figures 3 to 5 In the illustrated embodiment, the elastic protrusion 32 is V-shaped. Of course, the elastic protrusion 32 can also be other shapes, such as a trapezoid.

[0055] The elastic protrusion 32 is arc-shaped or V-shaped, has a simple structure, and is easy to process.

[0056] When the elastic protrusion 32 includes the elastic rib 321 in the above embodiment, it means that the protrusion shape of the elastic rib 321 is arc-shaped or V-shaped, or other shapes such as trapezoidal.

[0057] In one embodiment, Figure 4As shown, the elastic rib 321 includes a first bending section 3211 and a second bending section 3212 , and the length of the first bending section 3211 is greater than the length of the second bending section 3212 .

[0058] When the elastic rib 321 is configured to consist of a first bending section 3211 and a second bending section 3212, the length of the first bending section 3211 is greater than the length of the second bending section 3212, and the elastic rib 321 is V-shaped, but is an asymmetric structure, so that a lead-in angle α can be formed between the first bending section 3211 with a longer length and the body 31, which is convenient for assembly. Figure 4 For the annular spring 3 shown in FIG. 1 , the introduction angle α refers to the angle between the first bending section 3211 and the axial direction of the body 31. Figure 5 shown.

[0059] In one embodiment, Figure 7 As shown, the elastic protrusion 32 includes a spring sheet 33 , one end of the spring sheet 33 is connected to the body 31 , and the other end of the spring sheet 33 extends toward the inside or outside of the body 31 .

[0060] Specifically, the spring piece 33 is a cantilever structure inclined with respect to the body 31, and may be inclined toward the inside of the body 31 or toward the outside of the body 31. Taking the first conductive tube 1 inserted into the second conductive tube 2 as an example, when the spring piece 33 is inclined toward the inside of the body 31, the body 31 of the annular spring piece 3 abuts against the inner wall of the second conductive tube 2, and the spring piece 33 abuts against the outer wall of the first conductive tube 1. When the spring piece 33 is inclined toward the outside of the body 31, the body 31 of the annular spring piece 3 abuts against the outer wall of the first conductive tube 1, and the spring piece 33 abuts against the inner wall of the second conductive tube 2.

[0061] Specifically, the distance between the other end of the spring sheet 33 and the body 31 determines the amount of compression of the spring sheet 33 after being assembled. To ensure the amount of compression of the spring sheet 33 after being assembled, the introduction angle α of the spring sheet 33 can be increased, or the extension length of the spring sheet 33 can be increased, so as to ensure that the annular spring sheet 3 can provide sufficient elastic force to firmly connect the first conductive tube 1 and the second conductive tube 2.

[0062] Furthermore, for the above embodiment, the body 31 may be configured as an open ring to facilitate assembly of the annular spring 3 .

[0063] Along the axial direction of the annular spring sheet 3, since the other end of the spring sheet 33 extends toward the inside or outside of the body 31, and the first conductive tube 1 and the second conductive tube 2 are also plugged in along the axial direction, such a configuration facilitates the insertion of the first conductive tube 1, the second conductive tube 2 and the annular spring sheet 3. Specifically, in the assembly type, when the spring sheet 33 is provided on the inside of the body 31, the inclination direction of the spring sheet 33 is provided along the plugging direction of the first conductive tube 1; when the spring sheet 33 is provided on the outside of the body 31, the inclination direction of the spring sheet 33 is provided along the plugging direction of the second conductive tube 2.

[0064] In one embodiment, there is an introduction angle α between the elastic protrusion 32 and the axis of the body 31, 15°≤α≤20°, the other end of the spring 33 extends toward the inner side of the body 31, and the diameter of the circle where the other ends of at least three spring sheets 33 are located is less than or equal to the diameter corresponding to the outer wall of the first conductive tube 1; or, the other end of the spring sheet 33 extends toward the outer side of the body 31, and the diameter of the circle where the other ends of at least three spring sheets 33 are located is greater than or equal to the diameter corresponding to the inner wall of the second conductive tube 2.

[0065] for Figure 6 For the annular spring leaf 3 shown, the introduction angle α refers to the angle between the spring leaf 33 and the axial direction of the body 31 .

[0066] By setting a lead-in angle between the elastic protrusion 32 and the axis of the body 31, it is helpful for the parts to smoothly enter the appropriate contact position, and the annular spring 3 is kept within the elastic limit, so that the first conductive tube 1 and the second conductive tube 2 can achieve sufficient contact and conduction effect.

[0067] Controlling the lead-in angle α within the range of 15° to 20° can ensure that the elastic protrusion 32 can play the role of elastic force and that the lead-in angle α is reasonable, which facilitates the insertion of the first conductive tube 1 and the second conductive tube 2 .

[0068] In one embodiment, the annular spring 3 is an open ring which is interrupted in the circumferential direction.

[0069] By configuring the annular spring 3 as an open ring that is disconnected in the circumferential direction, the annular spring 3 and the first conductive tube 1 can be easily assembled, and the assembly difficulty can be reduced, thereby reducing the defective rate of the assembly of the first conductive tube 1, the second conductive tube 2 and the annular spring 3.

[0070] In one embodiment, at least two annular spring sheets 3 are provided at intervals along the axial direction of the first conductive tube 1 .

[0071] By providing at least two annular spring sheets 3 , the connection strength between the first conductive tube 1 and the second conductive tube 2 can be further improved.

[0072] Further, in one embodiment, the number of mounting grooves 4 is set corresponding to the number of annular springs 3. In this way, one annular spring 3 can be set in a separate mounting groove 4, and the annular spring 3 can be limited to prevent adjacent annular springs 3 from interfering with each other when they are in one mounting groove 4. Of course, when only one mounting groove 4 is provided, other assembly means can also be used to prevent adjacent annular springs 3 from interfering with each other during assembly, for example, the position of the annular spring 3 can be fixed by gluing.

[0073] For the installation slot, there are four settings:

[0074] In the first embodiment, the mounting groove 4 is disposed on the outer peripheral wall of the first conductive tube 1 .

[0075] In the second embodiment, the mounting groove 4 is disposed on the inner peripheral wall of the second conductive tube 2 .

[0076] In the third embodiment, the outer wall of the first conductive tube 1 is provided with a first groove, and the inner wall of the second conductive tube 2 is provided with a second groove. After the first conductive tube 1 and the second conductive tube 2 are inserted, the first groove and the second groove correspond to each other to form the installation groove 4.

[0077] In the fourth embodiment, if Fig. 9 As shown, the first conductive tube 1 has an annular first step surface 101, the second conductive tube 2 has an annular second step surface 201 and an annular third step surface 202, the inner diameter of the third step surface 202 is smaller than the inner diameter of the second step surface 201, and after the first conductive tube 1 and the second conductive tube 2 are inserted, the front end surface of the first conductive tube 1 abuts against the third step surface 202, and a gap is left between the first step surface 101 and the second step surface 201 to form the installation groove 4.

[0078] Specifically, for the fourth embodiment described above, Fig. 9 As shown, the first conductive tube 1 includes a first tube segment 11 and a second tube segment 12 connected to each other, the outer diameter of the first tube segment 11 is greater than the outer diameter of the second tube segment 12, and a first step surface 101 is formed between the first tube segment 11 and the second tube segment 12; the second conductive tube 2 includes a third tube segment 21 and a fourth tube segment 22 connected to each other, the inner diameter of the third tube segment 21 is greater than the inner diameter of the fourth tube segment 22, and a second step surface 201 is formed between the third tube segment 21 and the fourth tube segment 22; the first tube segment 11 and the third tube segment 21 are plug-in matched, and the second tube segment 12 and the fourth tube segment 22 are plug-in matched.

[0079] In this embodiment, the gap between the first step surface 101 and the second step surface 201 constitutes the installation groove 4, and the annular spring sheet 3 is sleeved outside the first conductive tube 1. By controlling the sizes of the first conductive tube 1 and the second conductive tube 2 to form the installation groove 4, there is no need to process a groove on the surface of the first conductive tube 1 or the second conductive tube 2, making the structure simpler and reducing the processing cost.

[0080] In one embodiment, the second conductive tube 2 also includes a fifth tube segment 23 connected to the fourth tube segment 22, the inner diameter of the fifth tube segment 23 is smaller than the inner diameter of the fourth tube segment 22, a third step surface 202 is formed between the fourth tube segment 22 and the fifth tube segment 23, and the front end surface of the first tube segment 11 abuts against the third step surface 202.

[0081] The third step surface 202 and the front end surface of the first tube section 11 are in contact with each other to realize the assembly and positioning of the first conductive tube 1 and the second conductive tube 2. When the front end surface of the first tube section 11 and the third step surface 202 are in contact, it means that the first conductive tube 1 and the second conductive tube 2 are in place.

[0082] According to an embodiment of the present utility model, on the other hand, an endoscope is also provided, comprising the conductive tube connection structure of any one of the above technical solutions.

[0083] When the conductive tube connection structure described in any of the above embodiments is applied to an endoscope, since the first conductive tube 1 and the second conductive tube 2 in the endoscope are fully conductive on the circumferential surface through the annular spring 3, it can help to form a good shielding body for the entire endoscope, thereby improving the endoscope's anti-electromagnetic interference capability and anti-static interference capability; and the use of the conductive tubes in the above embodiments reduces the difficulty of assembly and reduces the defective rate of product assembly.

[0084] In one embodiment, the first conductive tube 1 comprises a cable tube, and the second conductive tube 2 comprises a pipe joint.

[0085] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A conductive tube connection structure, characterized in that: include: A first conductive tube (1); A second conductive tube (2), wherein the first conductive tube (1) is inserted into the second conductive tube (2), and an annular mounting groove (4) is provided between the first conductive tube (1) and the second conductive tube (2); An annular spring (3), the annular spring (3) is made of a conductive material, the annular spring (3) is sleeved outside the first conductive tube (1) and is located in the mounting groove (4), the annular spring (3) is respectively in conductive contact with the first conductive tube (1) and the second conductive tube (2), and the annular spring (3) applies elastic force to the first conductive tube (1) and the second conductive tube (2) respectively, so that the first conductive tube (1) and the second conductive tube (2) are conductive and connected.

2. The conductive tube connection structure according to claim 1, characterized in that: The annular spring sheet (3) comprises an annular body (31) and an elastic protrusion (32) located on the circumferential surface of the body (31).

3. The conductive tube connection structure according to claim 2, characterized in that: The elastic protrusion (32) comprises a plurality of elastic ribs (321) arranged at intervals along the circumferential direction, and adjacent elastic ribs (321) are hollowed out.

4. The conductive tube connection structure according to claim 2 or 3, characterized in that: Along the axial direction of the annular spring leaf (3), the cross section of the elastic protrusion (32) is arc-shaped or V-shaped.

5. The conductive tube connection structure according to claim 3, characterized in that: The elastic rib (321) comprises a first bending section (3211) and a second bending section (3212), and the length of the first bending section (3211) is greater than the length of the second bending section (3212).

6. The conductive tube connection structure according to claim 2, characterized in that: The elastic protrusion (32) comprises a spring sheet (33), one end of which is connected to the body (31), and the other end of which extends toward the inside or outside of the body (31).

7. The conductive tube connection structure according to claim 6, characterized in that: There is an introduction angle α between the elastic protrusion (32) and the axis of the body (31), 15°≤α≤20°; The other end of the elastic sheet (33) extends toward the inner side of the body (31), and the diameter of the circle where the other ends of at least three of the elastic sheets (33) are located is less than or equal to the diameter corresponding to the outer wall of the first conductive tube (1); Alternatively, the other end of the spring sheet (33) extends toward the outside of the body (31), and the diameter of the circle where the other ends of at least three spring sheets (33) are located is greater than or equal to the diameter corresponding to the inner wall of the second conductive tube (2).

8. The conductive tube connection structure according to any one of claims 1 to 3, characterized in that: The annular spring sheet (3) is an open ring which is broken in the circumferential direction.

9. The conductive tube connection structure according to any one of claims 1 to 3, characterized in that: At least two annular spring sheets (3) are arranged at intervals along the axial direction of the first conductive tube (1).

10. An endoscope, characterized in that: The conductive tube connection structure comprises the conductive tube connection structure according to any one of claims 1 to 9.

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