Endoscope liquid inlet assembly

Abstract

The utility model discloses an endoscope liquid inlet assembly which comprises an endoscope gun, a first connecting pipe and an endoscopic hose, the bottom of the endoscope gun is fixedly communicated with the top of the first connecting pipe, the bottom of the first connecting pipe is fixedly communicated with the top of the endoscopic hose, and the two sides of the first connecting pipe are fixedly communicated with second connecting pipes. The side, away from the first connecting pipe, of the second connecting pipe fixedly communicates with a clamping pipe, the inner wall of the clamping pipe is fixedly connected with a sealing structure, and an abutting structure is arranged at the top of the sealing structure. Through the arrangement of the endoscope gun, the first connecting pipe, the endoscope hose, the second connecting pipe, the clamping pipe, the sealing structure, the abutting structure and the locking structure, the problems that an existing endoscope liquid inlet assembly is inconvenient to connect and fix with an endoscope in the actual use process, and meanwhile when the endoscope is independently placed, the endoscope liquid inlet assembly is not convenient to connect and fix with the endoscope are solved. And a connecting pipeline on the endoscope cannot be sealed, so that impurities are easy to appear in the endoscope.

Description

Technical Field

[0001] The utility model belongs to the technical field of endoscope liquid inlet, in particular to an endoscope liquid inlet component. Background Art

[0002] An endoscope is a lighted tube that can be passed through the mouth and into the stomach or other natural orifices. Endoscopes are very useful to doctors because they can see things that X-rays can't. For example, an endoscope can help doctors see ulcers or tumors in the stomach and decide on the best treatment plan.

[0003] An endoscope liquid inlet assembly and an endoscope are disclosed on the patent website, and the publication number is: 201821476943.1. The present application relates to the field of endoscope technology, and in particular to an endoscope liquid inlet assembly and an endoscope including the endoscope liquid inlet assembly. The first liquid inlet valve is connected to the connecting tube body through the first liquid inlet valve joint; the second liquid inlet valve is connected to the connecting tube body through the liquid inlet valve connecting pipe; the first liquid inlet valve and the second liquid inlet valve are located on the same side of the connecting tube body. The endoscope liquid inlet assembly of the present application is suitable for endoscopes, and in particular for intervertebral disc endoscopes. By arranging the two liquid inlet valves on the same side of the endoscope, the convenience of the doctor in opening and closing the liquid inlet valves during the operation can be improved, and the situation in which the doctor holds the tool in one hand and has difficulty opening the two liquid inlet valves with the other hand can be avoided, thereby making the operation smoother and more efficient.

[0004] The problem with the above technology is that the endoscope liquid inlet assembly is not convenient to be connected and fixed to the endoscope during actual use. At the same time, when the endoscope is placed alone, the connecting pipe on the endoscope cannot be sealed, which makes it easy for impurities to appear inside the endoscope. Therefore, an endoscope is needed that can easily disassemble the liquid inlet pipe and seal the connecting pipe. Utility Model Content

[0005] In response to the problems existing in the prior art, the utility model provides an endoscope liquid inlet assembly, which has the advantages of convenient disassembly of the liquid inlet pipe and sealing of the connecting pipe. It solves the problem that the existing endoscope liquid inlet assembly is inconvenient to be connected and fixed with the endoscope during actual use, and when the endoscope is placed alone, the connecting pipe on the endoscope cannot be sealed, causing impurities to easily appear inside the endoscope.

[0006] The utility model is implemented as follows: an endoscope liquid inlet assembly comprises an endoscope gun, a first connecting tube and an endoscope hose, wherein the bottom of the endoscope gun is fixedly connected to the top of the first connecting tube, the bottom of the first connecting tube is fixedly connected to the top of the endoscope hose, both sides of the first connecting tube are fixedly connected to the second connecting tube, and the side of the second connecting tube away from the first connecting tube is fixedly connected to the clamping tube;

[0007] The inner wall of the clamping tube is fixedly connected with a sealing structure, the top of the sealing structure is provided with an abutment structure, and the bottom of the abutment structure cooperates with the top of the sealing structure;

[0008] The surface of the sealing structure is movably connected to the inside of the clamping tube, and the top of the sealing structure is fixedly connected to a connecting hose;

[0009] Locking structures are arranged on both sides of the top of the sealing structure, and the surfaces of the locking structures cooperate with the inner walls of the card tube.

[0010] As a preferred embodiment of the utility model, the sealing structure includes a fixed ring, the surface of the fixed ring is fixedly connected to the inner wall of the clamping tube, a sealing plate is provided at the bottom of the fixed ring, and a fixed column is fixedly connected to the top of the sealing plate, the top of the fixed column passes through the fixed ring and extends to the top of the fixed ring, the number of the fixed columns is four, and they are evenly distributed at the four corners of the top of the sealing plate, the surface of the fixed column is movably connected to the inside of the fixed ring, the top of the fixed column is fixedly connected to a limiting plate, the surface of the limiting plate is used in conjunction with the surface of the fixed ring, and the top of the sealing plate is used in conjunction with the bottom of the abutting structure.

[0011] As a preferred embodiment of the utility model, the abutting structure includes a abutting tube, which is located at the top of the sealing plate, the top of the surface of the abutting tube is fixedly connected to a limiting ring, the surface of the limiting ring is movably connected to the surface of the clamping tube, the bottom of the abutting tube is in contact with the top of the sealing plate, and the bottom of the surface of the abutting tube is provided with through holes, the number of the through holes is four, and they are evenly distributed on the surface of the abutting tube, the top of the abutting tube is fixedly connected to the connecting hose, and the top of the limiting ring is fixedly connected to the bottom of the locking structure.

[0012] As a preferred embodiment of the utility model, the locking structure includes a locking rod, which is located at the top of the limiting ring, the bottom of the locking rod is in contact with the top of the limiting ring, the surface of the locking rod is sleeved with a limiting block, the side of the locking rod close to the connecting hose is fixedly connected to a fixing rod, the side of the fixing rod close to the limiting block is fixedly connected to a tension spring, and the side of the tension spring close to the limiting block is fixedly connected to the surface of the limiting block.

[0013] As a preferred embodiment of the utility model, a spring is sleeved on the surface of the fixed column, the top of the spring is fixedly connected to the bottom of the limit plate, the bottom of the spring is fixedly connected to the top of the fixed ring, and the surface of the movable tube is fixedly connected to a sealing ring 11, and the bottom of the sealing ring 11 is used in conjunction with the top of the fixed ring.

[0014] As a preferred embodiment of the utility model, a guide groove is provided on the surface of the limit ring, and the guide grooves are two in number and symmetrically distributed. A guide rod is movably connected inside the guide groove, and the guide rod is fixedly connected to the inner wall of the card tube on the side close to the card tube. A locking groove for use with the locking rod is provided inside the card tube, and the locking groove is annularly provided on the inner wall of the card tube.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model is provided with an endoscope gun, a first connecting tube, an endoscope hose, a second connecting tube, a clamping tube, a sealing structure, an abutting structure and a locking structure. The sealing structure is fixed to the clamping tube, the sealing structure is abutted by the abutting structure, and the locking structure is fixed to the inside of the clamping tube. It is convenient to transport liquid and to connect and disassemble the connecting hose. It solves the problem that the existing endoscope liquid inlet component is inconvenient to connect and fix with the endoscope during actual use, and when the endoscope is placed alone, the connecting pipe on the endoscope cannot be sealed, causing impurities to easily appear inside the endoscope.

[0017] 2. The utility model sets up a sealing structure, which can be fixedly connected to the inner wall of the clamping tube through a fixed ring, and the sealing plate contacts the surface of the fixed ring. The fixed column limits and guides the sealing plate. The limiting plate can prevent the fixed column from being separated from the fixed ring and the sealing plate from being stuck, thereby facilitating the transmission of the structure.

[0018] 3. The utility model is provided with a moving structure, which can move the sealing plate and the fixed ring by clamping the limit ring into the interior of the clamping tube and moving the sealing plate through the moving tube, so that the sealing plate is separated from the fixed ring, so that the liquid can enter the interior of the first connecting tube through the through hole on the moving tube and the gap between the fixed ring and the sealing plate, thereby facilitating the transportation of the liquid.

[0019] 4. The utility model is provided with a locking structure, so that when the limit ring moves to a suitable position inside the card tube, the limit ring will drive the limit block to move, and the limit block will drive the locking rod to move. When the locking rod is flush with the locking groove, the tension spring pulls the fixing rod, and the fixing rod drives the locking rod to snap into the locking groove, thereby positioning and fixing the limit ring to achieve the purpose of connecting the connecting hose. When disassembly is required, the fixing rod is moved, and the fixing rod drives the locking rod to detach from the inside of the card tube, thereby achieving the purpose of quick disassembly.

[0020] 5. The utility model provides a spring and a sealing ring 11, which can rebound the limit plate through the spring, and the limit plate drives the fixed column to move, so that the fixed column drives the sealing plate to be stuck at the bottom of the fixed circular ring to achieve the sealing effect. The sealing ring 11 is fixed on the surface of the movable tube, and the sealing ring 11 can contact the surface of the fixed circular ring to achieve the limit of the movable tube, and at the same time, the movable tube and the fixed circular ring can be sealed to avoid liquid leakage.

[0021] 6. The utility model can open a guide groove through the surface of the limit ring by arranging a guide groove, a guide rod and a locking groove, which can facilitate the movement of the guide rod. The guide rod can play a role of limiting and guiding the limit ring to reduce the shaking of the limit ring. The locking groove can facilitate the locking rod to be inserted into the interior of the card tube, thereby facilitating the limiting and fixing of the limit ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0023] Figure 2 It is a sectional stereoscopic diagram of a card receiving tube provided by an embodiment of the utility model;

[0024] Figure 3 It is a three-dimensional diagram of the sealing structure and the abutting structure provided by the embodiment of the utility model;

[0025] Figure 4 It is a three-dimensional diagram of a local structure provided by an embodiment of the utility model;

[0026] Figure 5 The utility model embodiment provides Figure 2 A partial enlarged view of the middle A;

[0027] Figure 6 The utility model embodiment provides Figure 2 A partial enlarged view of point B in the middle.

[0028] In the figure: 1. endoscope gun; 2. first connecting tube; 3. endoscope hose; 4. second connecting tube; 5. clamping tube; 6. sealing structure; 601. fixing ring; 602. sealing plate; 603. fixing column; 604. limiting plate; 7. abutting structure; 701. abutting tube; 702. limiting ring; 703. through hole; 8. connecting hose; 9. locking structure; 901. locking rod; 902. limiting block; 903. fixing rod; 904. tension spring; 10. spring; 11. sealing ring 11; 12. guide groove; 13. guide rod; 14. locking groove. DETAILED DESCRIPTION

[0029] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0030] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0031] like Figures 1 to 6 As shown, the endoscope liquid inlet assembly provided by the embodiment of the utility model includes an endoscope gun 1, a first connecting tube 2 and an endoscope hose 3. The bottom of the endoscope gun 1 is fixedly connected to the top of the first connecting tube 2, the bottom of the first connecting tube 2 is fixedly connected to the top of the endoscope hose 3, both sides of the first connecting tube 2 are fixedly connected with the second connecting tube 4, the side of the second connecting tube 4 away from the first connecting tube 2 is fixedly connected with a clamping tube 5, the inner wall of the clamping tube 5 is fixedly connected with a sealing structure 6, the top of the sealing structure 6 is provided with a moving structure 7, the bottom of the moving structure 7 is used in conjunction with the top of the sealing structure 6, the surface of the sealing structure 6 is movably connected to the inside of the clamping tube 5, the top of the sealing structure 6 is fixedly connected with a connecting hose 8, both sides of the top of the sealing structure 6 are provided with locking structures 9, the surface of the locking structure 9 is used in conjunction with the inner wall of the clamping tube 5.

[0032] refer to Figure 3 The sealing structure 6 includes a fixed ring 601, the surface of which is fixedly connected to the inner wall of the clamping tube 5, a sealing plate 602 is provided at the bottom of the fixed ring 601, a fixed column 603 is fixedly connected to the top of the sealing plate 602, the top of the fixed column 603 passes through the fixed ring 601 and extends to the top of the fixed ring 601, there are four fixed columns 603, and they are evenly distributed at the four corners of the top of the sealing plate 602, the surface of the fixed column 603 is movably connected to the inside of the fixed ring 601, the top of the fixed column 603 is fixedly connected to a limiting plate 604, the surface of the limiting plate 604 is used in conjunction with the surface of the fixed ring 601, and the top of the sealing plate 602 is used in conjunction with the bottom of the abutting structure 7.

[0033] The above scheme is adopted: by setting up the sealing structure 6, it can be fixedly connected with the inner wall of the clamping tube 5 through the fixed ring 601, and the sealing plate 602 is in contact with the surface of the fixed ring 601. The fixed column 603 limits and guides the sealing plate 602, and the limiting plate 604 can prevent the fixed column 603 from being separated from the fixed ring 601 and the sealing plate 602 from being stuck, thereby facilitating the transmission of the structure.

[0034] refer to Figure 3The abutting structure 7 includes an abutting tube 701, which is located at the top of the sealing plate 602. The top of the surface of the abutting tube 701 is fixedly connected to a limiting ring 702. The surface of the limiting ring 702 is movably connected to the surface of the clamping tube 5. The bottom of the abutting tube 701 contacts the top of the sealing plate 602. A through hole 703 is provided at the bottom of the surface of the abutting tube 701. There are four through holes 703, which are evenly distributed on the surface of the abutting tube 701. The top of the abutting tube 701 is fixedly connected to the connecting hose 8, and the top of the limiting ring 702 is fixedly connected to the bottom of the locking structure 9.

[0035] The above scheme is adopted: by setting the abutment structure 7, the limiting ring 702 can be inserted into the interior of the clamping tube 5, and the sealing plate 602 can be abutted by the abutment tube 701, so that the sealing plate 602 is separated from the fixed ring 601, so that the liquid can pass through the through hole 703 on the abutment tube 701 and the gap between the fixed ring 601 and the sealing plate 602 into the interior of the first connecting tube 2, thereby facilitating the transportation of the liquid.

[0036] refer to Figure 6 The locking structure 9 includes a locking rod 901, which is located at the top of the limiting ring 702, and the bottom of the locking rod 901 contacts the top of the limiting ring 702. The surface of the locking rod 901 is sleeved with a limiting block 902. The side of the locking rod 901 close to the connecting hose 8 is fixedly connected to a fixing rod 903, and the side of the fixing rod 903 close to the limiting block 902 is fixedly connected to a tension spring 904. The side of the tension spring 904 close to the limiting block 902 is fixedly connected to the surface of the limiting block 902.

[0037] The above scheme is adopted: by setting the locking structure 9, when the limit ring 702 moves to the appropriate position inside the card tube 5, the limit ring 702 will drive the limit block 902 to move, and the limit block 902 drives the locking rod 901 to move. When the locking rod 901 is flush with the locking groove 14, the tension spring 904 pulls the fixing rod 903, and the fixing rod 903 drives the locking rod 901 to be stuck in the locking groove 14, thereby positioning and fixing the limit ring 702, thereby achieving the purpose of connecting the connecting hose 8. When disassembly is required, the fixing rod 903 is moved, and the fixing rod 903 drives the locking rod 901 to disengage from the inside of the card tube 5, thereby achieving the purpose of quick disassembly.

[0038] refer to Figure 3 and Figure 4 A spring 10 is sleeved on the surface of the fixed column 603, the top of the spring 10 is fixedly connected to the bottom of the limiting plate 604, the bottom of the spring 10 is fixedly connected to the top of the fixed ring 601, and a sealing ring 11 is fixedly connected to the surface of the movable tube 701, and the bottom of the sealing ring 11 is used in conjunction with the top of the fixed ring 601.

[0039] The above scheme is adopted: by setting the spring 10 and the sealing ring 11, the limit plate 604 can be rebounded by the spring 10, and the limit plate 604 drives the fixed column 603 to move, so that the fixed column 603 drives the sealing plate 602 to be stuck at the bottom of the fixed ring 601 to achieve the sealing effect, and the sealing ring 11 is fixed on the surface of the movable tube 701. The sealing ring 11 can contact the surface of the fixed ring 601, so as to limit the movable tube 701 and seal the movable tube 701 and avoid liquid leakage.

[0040] refer to Figure 3 , Figure 4 and Figure 5 A guide groove 12 is provided on the surface of the limit ring 702. There are two guide grooves 12 which are symmetrically distributed. A guide rod 13 is movably connected inside the guide groove 12. The side of the guide rod 13 close to the card tube 5 is fixedly connected to the inner wall of the card tube 5. A locking groove 14 for use with the locking rod 901 is provided inside the card tube 5. The locking groove 14 is annularly provided on the inner wall of the card tube 5.

[0041] The above scheme is adopted: by setting the guide groove 12, the guide rod 13 and the locking groove 14, the guide groove 12 can be opened through the surface of the limit ring 702, which can facilitate the movement of the guide rod 13. The guide rod 13 can play a role of limiting and guiding the limit ring 702, thereby reducing the shaking of the limit ring 702. The locking groove 14 can facilitate the locking rod 901 to be inserted into the interior of the card tube 5, thereby facilitating the limiting and fixing of the limit ring 702.

[0042] The working principle of this utility model:

[0043] When in use, when it is necessary to infuse liquid into the first connecting tube 2 and the endoscopic hose 3, the limiting ring 702 is inserted into the interior of the clamping tube 5, and the sealing plate 602 is pushed by the abutting tube 701 to separate the sealing plate 602 from the fixed circular ring 601, so that the liquid enters the interior of the first connecting tube 2 through the through hole 703 on the abutting tube 701 and the gap between the fixed circular ring 601 and the sealing plate 602 to transport the liquid. When the limiting ring 702 moves to a suitable position inside the clamping tube 5, the limiting ring 702 will drive the limiting block 902 to move, and the limiting block 902 will drive the locking rod 901 to move. When the locking rod 901 is flush with the locking groove 14, the tension spring 904 pulls the fixing rod 903, and the fixing rod 903 drives the locking rod 901 to be clamped into the locking groove 14, thereby locking the limiting ring 7 02 is positioned and fixed to achieve the purpose of connecting the connecting hose 8, and the second connecting tube 4 and the clamping tube 5 are infused through the connecting hose 8 and the movable tube 701. When the connecting hose 8 needs to be removed, the fixing rod 903 is moved, and the fixing rod 903 drives the locking rod 901 to move. At the same time, the fixing rod 903 stretches the tension spring 904, so that the locking rod 901 is disengaged from the locking groove 14, and the connecting hose 8 is moved. The connecting hose 8 drives the movable tube 701 and the limiting ring 702 to disengage from the inside of the clamping tube 5. When the movable tube 701 is separated from the surface of the sealing plate 602, the spring 10 rebounds the limiting plate 604, and the limiting plate 604 drives the fixing column 603 to move, so that the fixing column 603 drives the sealing plate 602 to be stuck at the bottom of the fixing ring 601, so as to achieve the purpose of sealing and prevent the entry of impurities.

[0044] To sum up: the endoscope liquid inlet component, by arranging an endoscope gun 1, a first connecting tube 2, an endoscope hose 3, a second connecting tube 4, a clamping tube 5, a sealing structure 6, a fixed ring 601, a sealing plate 602, a fixed column 603, a limiting plate 604, a moving structure 7, a moving tube 701, a limiting ring 702, a through hole 703, a connecting hose 8, a locking structure 9, a locking rod 901, a limiting block 902, a fixing rod 903, a tension spring 904, a spring 10, a sealing ring 11, a guide groove 12, a guide rod 13 and a locking groove 14, solves the problem that the existing endoscope liquid inlet component is inconvenient to be connected and fixed with the endoscope during actual use, and at the same time, when the endoscope is placed alone, the connecting pipe on the endoscope cannot be sealed, which makes it easy for impurities to appear inside the endoscope.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An endoscope liquid inlet assembly, comprising an endoscope gun (1), a first connecting tube (2) and an endoscope hose (3), characterized in that: The bottom of the endoscope gun (1) is fixedly connected to the top of the first connecting tube (2), the bottom of the first connecting tube (2) is fixedly connected to the top of the endoscope hose (3), both sides of the first connecting tube (2) are fixedly connected to the second connecting tube (4), and the side of the second connecting tube (4) away from the first connecting tube (2) is fixedly connected to the clamping tube (5); The inner wall of the clamping tube (5) is fixedly connected with a sealing structure (6), the top of the sealing structure (6) is provided with an abutting structure (7), and the bottom of the abutting structure (7) is used in conjunction with the top of the sealing structure (6); The surface of the sealing structure (6) is movably connected to the interior of the clamping tube (5), and the top of the sealing structure (6) is fixedly connected to a connecting hose (8); Locking structures (9) are provided on both sides of the top of the sealing structure (6), and the surface of the locking structure (9) cooperates with the inner wall of the card tube (5).

2. The endoscope liquid inlet assembly according to claim 1, characterized in that: The sealing structure (6) comprises a fixed ring (601), the surface of which is fixedly connected to the inner wall of the clamping tube (5), a sealing plate (602) is arranged at the bottom of the fixed ring (601), a fixed column (603) is fixedly connected to the top of the sealing plate (602), the top of which passes through the fixed ring (601) and extends to the top of the fixed ring (601), there are four fixed columns (603), which are evenly distributed at the four corners of the top of the sealing plate (602), the surface of which is movably connected to the inside of the fixed ring (601), the top of which is fixedly connected to a limiting plate (604), the surface of which is used in conjunction with the surface of the fixed ring (601), and the top of the sealing plate (602) is used in conjunction with the bottom of the abutting structure (7).

3. The endoscope liquid inlet assembly according to claim 2, characterized in that: The abutting structure (7) comprises an abutting tube (701), wherein the abutting tube (701) is located at the top of the sealing plate (602), the top of the surface of the abutting tube (701) is fixedly connected to a limiting ring (702), the surface of the limiting ring (702) is movably connected to the surface of the clamping tube (5), the bottom of the abutting tube (701) contacts the top of the sealing plate (602), the bottom of the surface of the abutting tube (701) is provided with a through hole (703), the number of the through holes (703) is four and they are evenly distributed on the surface of the abutting tube (701), the top of the abutting tube (701) is fixedly connected to the connecting hose (8), and the top of the limiting ring (702) is fixedly connected to the bottom of the locking structure (9).

4. The endoscope liquid inlet assembly according to claim 3, characterized in that: The locking structure (9) comprises a locking rod (901), wherein the locking rod (901) is located at the top of the limiting ring (702), the bottom of the locking rod (901) contacts the top of the limiting ring (702), the surface of the locking rod (901) is sleeved with a limiting block (902), the side of the locking rod (901) close to the connecting hose (8) is fixedly connected to a fixing rod (903), the side of the fixing rod (903) close to the limiting block (902) is fixedly connected to a tension spring (904), and the side of the tension spring (904) close to the limiting block (902) is fixedly connected to the surface of the limiting block (902).

5. The endoscope liquid inlet assembly according to claim 3, characterized in that: The surface of the fixed column (603) is sleeved with a spring (10), the top of the spring (10) is fixedly connected to the bottom of the limit plate (604), the bottom of the spring (10) is fixedly connected to the top of the fixed ring (601), and the surface of the movable tube (701) is fixedly connected with a sealing ring 11 (11), the bottom of the sealing ring 11 (11) is used in conjunction with the top of the fixed ring (601).

6. The endoscope liquid inlet assembly according to claim 4, characterized in that: A guide groove (12) is provided on the surface of the limiting ring (702). The guide grooves (12) are two in number and are symmetrically distributed. A guide rod (13) is movably connected inside the guide groove (12). The guide rod (13) is fixedly connected to the inner wall of the card tube (5) on the side close to the card tube (5). A locking groove (14) for use with the locking rod (901) is provided inside the card tube (5). The locking groove (14) is annularly provided on the inner wall of the card tube (5).

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