Quickly-assembled chuck assembly

Abstract

The invention relates to the technical field of hemostatic clips, in particular to a quick-assembly type chuck assembly which comprises a pull rod, a tightening pipe, a quick-assembly piece and a pair of split type clamping pieces. The waist part of the split type clamping piece is provided with a bending part, the tail part of the split type clamping piece is provided with a connecting plane, the connecting planes positioned in the tightening pipe are laminated, connecting holes are formed in the connecting planes, and the split type clamping piece is also provided with an assembling section; the quick assembly part comprises a lantern ring and an elastic tooth piece, the elastic tooth piece abuts against the assembly section, and a connecting channel is formed between the staggered connecting holes; a boss is fixedly arranged at the end of the pull rod, and the boss penetrating through the connecting plane abuts against the connecting plane. And a buckle is arranged on the tightening pipe and is used for limiting the axial movement of the quick-mounting piece. In order to solve the technical problem that the clamping head part of an existing hemostatic clip is difficult to assemble, the quick-assembling piece is arranged, so that the split type clamping pieces on the two sides are quickly assembled into a whole, then the pull rod, the tightening pipe and the split type clamping pieces can be quickly connected, and the assembling process of the pull rod and the clamping pieces is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of hemostatic clips, and particularly to a quick-assembly chuck assembly. Background Art

[0002] A typical hemostatic clip system consists of two major parts: an operating mechanism and an applicator mechanism. According to mechanical structure differences, it can be divided into two major technical schools: chute-type hemostatic clips and leaf spring-type hemostatic clips (the core components all include: a clamping catheter, a clip assembly, a limiting mechanism, etc.). The clip assembly of the applicator generally adopts a double-lobe design, and its engineering dimensions need to be controlled to an accuracy of at least 0.1 mm. At the same time, considering the limitations of the working channel of the endoscope used in cooperation, the parts are often assembled in a clamping catheter with an inner diameter of 2.0 ± 0.1 mm, and the spatial fitting accuracy of the multi-stage limiting structure is ensured.

[0003] For traditional hemostatic clips, especially their chuck parts, in order to meet the functions of chuck clamping and releasing, there are many components constituting the chuck, and the assembly process is relatively complex and cumbersome. For example, the clip can be divided into an integral structure and a split structure. If the split structure is adopted, the tails of the two side clips need to be welded or brazed to each other, or adhesively bonded or welded to other fixed structures uniformly, which is very complicated and the accuracy cannot be guaranteed.

[0004] In addition, based on the accuracy requirements of existing hemostatic clips, there are also many process difficulties in their assembly processes. Some assembly scenarios require the assistance of optical magnification equipment, and the error and precision control are difficult. In short, the assembly of the traditional hemostatic clip chuck mainly depends on experienced technical workers to complete with the assistance of special jigs, and the single-piece assembly takes a long time and the production efficiency is low. Summary of the Invention

[0005] Aiming at the technical problem of the large assembly difficulty of the chuck part of the existing hemostatic clip, the present invention provides a quick-assembly chuck assembly, which uses quick-assembly parts to quickly assemble the split clips on both sides into a unified whole, so that the pull rod, the tightening tube and the split clips can be quickly and conveniently connected, simplifying the assembly process of the pull rod and the clip. Moreover, the quick-assembly parts can provide a centripetal clamping force to the split clips on both sides, and this force makes the rod body of the pull rod form a surface contact with the installation hole of the split clip on one side, so that the convex platform at the head end of the pull rod and the connection plane form a mechanical self-locking, strengthening the stability of the connection between the pull rod and the split clip.

[0006] The technical solution provided by the present invention is: a quick-install chuck assembly, characterized in that it includes a pull rod, a tightening tube, a quick-install part and a pair of split clips; the split clips are arranged relative to each other, and the waist of the split clip is provided with a curved portion, and the curved portion is used to abut against the inner wall of the tightening tube; the tail of the split clip is provided with a connecting plane, and the connecting planes located in the tightening tube are stacked and provided with connecting holes; the split clip is also provided with an assembly section, and the assembly section is located between the curved portion and the connecting plane; the quick-install part includes a plurality of springs, a plurality of springs and a plurality of springs. It includes a ring and an elastic tooth piece, the elastic tooth piece is evenly fixed on the inner side of the ring along the circumferential direction, the ring is sleeved on the outer side of the assembly section, and the elastic tooth piece abuts against the assembly section so that the connecting holes are staggered with each other, and a connecting channel is formed between the staggered connecting holes; a boss is fixedly provided at the end of the pull rod, the outer diameter of the boss is smaller than the diameter of the connecting hole and larger than the effective diameter of the connecting channel, and the boss passing through the connecting plane abuts against the connecting plane; a buckle is provided on the tightening tube, and the buckle is used to limit the axial movement of the quick-install part.

[0007] Optionally, the width of the elastic tooth piece gradually decreases from the edge of the ring toward the center of the ring.

[0008] Optionally, a connecting pin is provided on the assembly section, and the connecting pin is located on a side of the quick-assembly component facing the head of the split clip.

[0009] Optionally, the buckle is a spring sheet symmetrically arranged on the tightening tube, one end of the spring sheet is fixedly connected to the tightening tube, and the other end of the spring sheet extends toward the side away from the split clip and is inclined toward the center line of the tightening tube, so that the minimum passing dimension between the spring sheets is smaller than the outer diameter of the quick-release part.

[0010] Optionally, the elastic tooth piece is inclined toward a side away from the split clip, so that the inclined direction of the elastic tooth piece is consistent with the inclined direction of the spring piece.

[0011] Optionally, a blocking pin is provided on the tightening tube, and the blocking pin is located on the tightening tube near the head of the split clip.

[0012] Optionally, a cone-shaped portion is provided on the boss.

[0013] Optionally, at least one quick-install part is provided.

[0014] Optionally, the quick-install part is made of metal.

[0015] Optionally, the quick-install part is integrally formed.

[0016] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects: Aiming at the technical problem of the difficult assembly of the chuck part of the existing hemostatic clip, the present invention utilizes the setting of the quick-installation part, enabling the split clip pieces on both sides to be quickly assembled into a unified whole, and further enabling the connecting rod, the tightening tube and the split clip pieces to be quickly and conveniently connected, simplifying the assembly process of the connecting rod and the clip pieces.

[0017] Moreover, the quick-installation part can provide a centripetal clamping force to the split clip pieces on both sides. This centripetal clamping force causes the mounting holes on the two split clip pieces to be misaligned with each other, and this misalignment causes the rod body of the connecting rod to form a surface contact with the mounting hole on one side, so that the convex platform at the head end of the connecting rod and the connecting plane form a mechanical self-locking, thereby strengthening the stability of the connection between the connecting rod and the split clip pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic structural diagram of the quick-installation chuck assembly proposed in the embodiment of the present invention.

[0019] Figure 2 is Figure 1 an enlarged schematic diagram of part A in FIG.

[0020] Figure 3 FIG. is a schematic structural diagram of the quick-installation part proposed in the embodiment of the present invention.

[0021] Figure 4 FIG. is a partially enlarged schematic diagram of the quick-installation chuck assembly proposed in the embodiment of the present invention.

[0022] Figure 5 FIG. is one of the schematic diagrams of the working process of the quick-installation chuck assembly proposed in the embodiment of the present invention.

[0023] Figure 6 FIG. is another schematic diagram of the working process of the quick-installation chuck assembly proposed in the embodiment of the present invention.

[0024] Figure 7 FIG. is a schematic structural diagram of the connecting rod proposed in the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] To further understand the content of the present invention, the present invention will be described in detail in combination with the accompanying drawings and embodiments.

[0026] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. In addition, it should be noted that for the sake of convenience of description, only the parts related to the invention are shown in the drawings. The terms "first", "second", etc. in the present invention are set for the convenience of describing the technical solution of the present invention, and have no specific limiting effect, and are all general references, and do not constitute a limiting effect on the technical solution of the present invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradiction or conflict, and are all within the scope of protection required by the present invention.

[0027] In combination with the attached Figure 1 to the attached Figure 7 , this embodiment proposes a quick-install clamping head assembly, which includes a pull rod 1, a tightening tube 2, a quick-install part 4, and a pair of split clamping pieces 3. The split clamping pieces 3 are arranged opposite to each other. The split clamping pieces 3 are generally made of metal, and their heads are provided with clamping teeth.

[0028] The waist of the split clamping piece 3 is provided with a bending part 30. The design of the bending part 30 enables the split clamping piece 3 to have a certain elasticity. When assembled with the tightening tube 2, it shows a tendency to expand outwards, that is, the split clamping pieces 3 on both sides have a tendency to open. Based on the design of the bending part 30, when the split clamping piece 3 is completely retracted into the tightening tube 2, the bending part 30 will be in close contact with the inner wall of the tightening tube 2.

[0029] The tail of the split clamp piece 3 is provided with a connection plane 31. The connection plane 31 can be formed by bending the tail of the split clamp piece 3, or can be fixedly connected to the tail of the clamp piece by means of bonding, welding, etc. In this embodiment, it is preferably formed by bending. The connection planes 31 located in the tightening tube 2 are stacked, and connection holes 32 are provided on the connection planes 31. The split clamp piece 3 is also provided with an assembly section 33, and the assembly section 33 is located between the bending part 30 and the connection plane 31.

[0030] Combined with the attached Figure 3 , the quick-installation part 4 includes a collar 40 and elastic teeth 41. The elastic teeth 41 are uniformly fixed to the inner side of the collar 40 along the circumferential direction. In a preferred embodiment, the collar 40 and the elastic teeth 41 are integrally formed. The quick-installation part 4 is also preferably made of a metal material in this embodiment. Specifically, it can be a metal material with a certain elasticity but a relatively low hardness compared to the split clamp piece 3, such as C17200 beryllium copper (elastic modulus 128 GPa, HV 280 - 320), 304 stainless steel (after special annealing treatment, HV 180 - 200), etc.

[0031] The collar 40 is sleeved on the outside of the assembly section 33, and the elastic teeth 41 are in contact with the assembly section 33, and can radially restrain the assembly sections 33 of the two split clamp pieces 3 on both sides. Initially, the head ends of the split clamp pieces 3 are in an open state. Due to the lever effect and the restraining effect of the elastic teeth 41, the connection holes 32 will be misaligned with each other, and a connection channel 34 will be formed between the misaligned connection holes 32. Combined with the attached Figure 4 , wherein, the connection channel 34 is a channel formed by the overlapping part of the projections of the two connection holes 32, that is, a path without obstructive interference in the axial direction. It can be imagined that at least one quick-installation part 4 should be provided. In this embodiment, one is taken as an example, and in the actual implementation process, more can be set.

[0032] In this embodiment, a boss 10 is fixedly provided at the end of the pull rod 1. The outer diameter of the boss 10 is smaller than the diameter of the connection hole 32 and larger than the effective diameter of the connection channel 34. When the chuck part of the split clamp piece 3 is opened, the connection channel 34 can only allow the rod body part of the pull rod 1 to pass through, and the boss 10 cannot pass through this connection channel 34. Thus, when the boss 10 passes through the connection holes 32 of the two connection planes 31 in sequence to complete the assembly, by pulling the pull rod 1, the boss 10 will be in contact with the connection plane 31 on the side close to the head end of the split clamp piece 3, thereby realizing the assembly of the pull rod 1 and the split clamp piece 3. Also, a buckle 7 is provided on the tightening tube 2, and the buckle 7 is used to contact the quick-installation part 4 to limit the axial movement of the quick-installation part 4.

[0033] Clearly, this embodiment utilizes the quick-release assembly 4 to quickly assemble the two split clips 3 into a unified whole. This allows the tie rod 1, tightening tube 2, and split clip 3 to be quickly and conveniently connected, simplifying the assembly process of the tie rod 1 and split clip 3 and improving production efficiency. Furthermore, this assembly method significantly reduces component damage compared to traditional tooling-based assembly methods.

[0034] In this embodiment, the number of elastic teeth 41 and the gaps formed at their ends can be adjusted based on actual conditions. The embodiment shown in the accompanying drawings utilizes six elastic teeth 41. In other embodiments, more or fewer elastic teeth 41 may be provided, and the gaps formed at the ends of the elastic teeth 41 may also be larger or smaller depending on the dimensions of the assembled split clip 3 or other specific usage requirements. In short, the number of elastic teeth 41 and the gaps formed at their ends should be adjusted based on the desired fit with the split clip 3.

[0035] In a preferred embodiment, the width of the elastic teeth 41 gradually decreases from the edge of the collar 40 toward the center of the collar 40. This design allows the elastic teeth 41 to have a nonlinear stiffness, which is more suitable for assembling the split clip 3 and better adapting to the process of clamping the split clip 3 to the pull rod 1 during normal operation of the hemostatic clip.

[0036] In a further embodiment, a conical portion 101 is provided on the boss 10. The conical portion 101 can be a conical or arc-shaped chamfered surface at the end of the boss 10. This design can ensure that the pull rod 1 is inserted into the connecting hole 32 more smoothly, thereby further improving the convenience of assembly.

[0037] In this embodiment, a connecting pin 6 is provided on the assembly section 33, and the connecting pin 6 is located on the side of the quick-install component 4 facing the head of the split clip 3. The provision of the connecting pin 6 can stabilize the split clips 3 on both sides and prevent the split clips 3 on both sides from being misaligned or twisted.

[0038] Furthermore, in this embodiment, a buckle 7 is also provided. The buckle 7 is preferably a spring plate symmetrically provided on the tightening tube 2. One end of the spring plate is fixedly connected to the tightening tube 2, and the other end of the spring plate extends to the side away from the split clamp 3 and is inclined toward the center line of the tightening tube 2, so that the minimum passing dimension between the spring plates is smaller than the outer diameter of the quick-release part 4. Based on the design of the buckle 7, when the pull rod 1 is pulled toward the proximal end (or the side of the operating end, i.e., the bottom as shown in the accompanying drawings), the buckle 7 will apply resistance to the outer contour of the quick-release part 4, giving the operator a prompt through the operating feel to continue applying tension. When the quick-release part 4 passes the end of the buckle 7, the buckle 7 can limit the reverse movement of the quick-release part 4, that is, prevent the quick-release part 4 from returning to its original position, thereby keeping the split clamp 3 in a clamped state.

[0039] In a preferred embodiment, after the quick-attachment member 4 is assembled with the split clip 3, the elastic tooth piece 41 inclines towards the side away from the split clip 3, so that the inclination direction of the elastic tooth piece 41 is consistent with that of the elastic piece. This design of the inclination direction of the elastic tooth piece 41 opposite to the movement direction of the pull rod 1 can ensure that when the pull rod 1 is pulled back, a cooperation similar to a ratchet tooth (or reverse tooth) is formed between the elastic tooth piece 41 and the split clip 3, thereby enhancing the frictional force between the elastic tooth piece 41 and the split clip 3.

[0040] In addition, a blocking pin 5 is provided on the tightening tube 2, and the blocking pin 5 is located on the tightening tube 2 at a position close to the head of the split clip 3. With this design of the blocking pin 5, on the one hand, the anti-torsion property of the tightening tube 2 is improved, and on the other hand, the risk of axial displacement and radial deflection of the split clip 3 is effectively reduced.

[0041] In this embodiment, the designs of the split clip 3 and the quick-attachment member 4 have the following advantages: (1) achieving the quick and convenient assembly of the chuck assembly; (2) being able to ensure the reliability of the connection between the pull rod 1 and the split clip 3 through the mechanical self-locking effect.

[0042] Regarding the quick assembly of the chuck assembly, taking the chuck assembly including the blocking pin 5 and the connecting pin 6 as an example, the assembly steps that can be adopted are as follows: S1. Pre-positioning and installation of the clips: The two split clips 3 are aligned in the open state, and then the aligned split clip 3 group is axially inserted into the quick-attachment member 4. At this time, the elastic tooth pieces 41 on the quick-attachment member 4 will automatically generate a composite binding force to keep the clips on both sides at a certain opening angle (such as the maximum expansion position), and then the connecting pin 6 is placed to complete the preliminary pre-fixation. S2. Linkage assembly of the pull rod 1: The pull rod 1 is axially passed through the connecting holes 32 in sequence from the proximal end (the side close to the operating end, that is, the lower side of the split clip 3 shown in the drawing), ensuring that the convex platform 10 can abut against the connecting plane 31 when the pull rod 1 is pulled back to form an effective locking. S3. The pre-assembled component composed of the split clip 3, the connecting pin 6, the quick-attachment member 4 and the pull rod 1 is introduced into the cavity of the tightening tube 2. During this process, special attention should be paid to maintaining the preset opening angle of the split clip 3 to ensure that it is in the functional preparation state. After completion, a blocking pin 5 with a corresponding diameter should be matched according to the instrument specifications, and the blocking pin 5 should be implanted into the corresponding hole positions to form a rigid connection pair to ensure that the movement interference meets the design requirements.

[0043] The above assembly steps are only illustrative of a feasible method, and the content of each step can be adjusted. In short, the quick-install chuck assembly of this embodiment does not require any additional welding or bonding steps and does not require the assistance of optical magnification equipment. It can very quickly and conveniently achieve the installation between the pull rod 1, the tightening tube 2, the quick-install part 4, and the split clamp 3. Moreover, based on the design of the quick-install part 4, a centripetal clamping force can be provided to the split clamps 3 on both sides. This centripetal clamping force causes the mounting holes on the two split clamps 3 to be misaligned with each other, and this misalignment causes the rod body of the pull rod 1 to form a surface contact with one side of the mounting hole, thereby enabling the boss 10 at the head end of the pull rod 1 to form a mechanical self-locking with the connection plane 31, thus strengthening the stability of the connection between the pull rod 1 and the split clamp 3.

[0044] Combined with the attached Figure 5 and the attached Figure 6 , continuing to take the chuck assembly including the stop pin 5 and the connection pin 6 as an example, the dynamic unlocking process of the split clamp 3 and the pull rod 1 is as follows: Continuously pull the pull rod 1 to apply an axial traction force to the split clamp 3. Due to the existence of the bending part 30 at the waist position of the clamp, the lever effect formed by the clamp and the inner wall of the tightening tube 2 causes the misalignment degree of the connection hole 32 to gradually decrease, and the deviation amount between the central axis of the pull rod 1 and the axis of the connection hole 32 gradually decreases.

[0045] The tails of the split clamps 3 generate a separating displacement from each other, and the inner wall of the pull rod 1 and the connection hole 32 no longer abut and receive force. The tails of the clamps remain stable due to the lever effect generated by the abutment of the bending part 30 and the inner wall of the tightening tube 2, and the effective diameter of the connection channel 34 approaches the outer diameter of the head end of the pull rod 1. However, at this time, the boss 10 still abuts against the connection plane 31, and the split clamp 3 can be continuously pulled until the quick-install part 4 completely crosses the buckle 7. When it is necessary to achieve the separation of the pull rod 1 and the connection plane 31, several methods can be adopted. Generally, with the aid of the setting of the stop pin 5, since the stop pin 5 can prevent the split clamp 3 from continuing to move along the pulling force direction, the operator can pull the pull rod 1 forcefully to break the connection plane 31. For example, relying on the pulling force to change the bending angle of the connection plane 31 to make it tilt in the pulling force direction so that the boss 10 can directly slide out of the connection hole 32; or directly break the connection plane 31 to directly break the connection between the pull rod 1 and the split clamp 3, thereby achieving the mutual separation of the two.

[0046] Other operations can also be used to achieve the separation. For example, the pull rod 1 can be slightly shaken and the pulling force can be continuously applied. The boss 10 at the head end of the pull rod 1 can also pass through the connection hole 32 in sequence to achieve the separation between the pull rod 1 and the split clamp 3. Further, combined with the setting of the stop pin 5, even if the pull rod 1 is shaken initially and the pull rod 1 and the connection hole 32 are not separated, the stop pin 5 can prevent the split clamp 3 from continuing to move along the pulling force direction. Then the operator can repeatedly shake the pull rod 1 until the pull rod 1 and the connection hole 32 are separated in sequence.

[0047] In addition, it should be noted that the diameter of the connecting hole 32 is generally designed to be much larger than the outer diameter of the boss 10 to facilitate the detachment of the boss 10. In addition, since the connecting planes 31 located within the tightening tube 2 are stacked, the displacement amplitudes of the two connecting planes 31 due to the lever effect are slightly different, and the inventor can thereby optimize the design of the convergence process of the split clips 3 on both sides.

[0048] For example, the displacement amplitude of the connecting plane 31 on the side close to the head end of the split clip 3 is designed such that once converged, it can ensure that the boss 10 passes through the connecting hole 32 thereon, enabling the boss 10 to directly disengage from this connecting plane 31 and abut against the other connecting plane 31, which can further facilitate the detachment of the pull rod 1.

[0049] Alternatively, the displacement amplitude of the connecting plane 31 on the side close to the head end of the split clip 3 is designed such that when converged, it cannot directly cause the boss to pass through the connecting hole 32 thereon, while the other connecting plane 31 is designed such that after convergence, it swings to a position where the projection of the connecting hole 32 thereon onto the boss 10 can fully cover the boss 10, that is, after the boss 10 disengages from the connecting plane 31 on the side close to the head end of the split clip 3, it can directly pass through the connecting hole 32 on the other connecting plane 31, thereby further facilitating the detachment of the pull rod 1.

[0050] Based on the above principles and embodiments, it can be seen that the split clip 3 can only achieve one-time closing and locking, but cannot be repeatedly pushed out to achieve repeated clamping. In another embodiment, a pull rod 1 is designed as shown in the appendix Figure 7 A protrusion is provided on the rod body of the pull rod 1 to form a step 11, and this step 11 can abut against the connecting plane 31 on the side away from the split clip 3 to meet the requirement of pushing the split clip 3 outward by the pull rod 1. Specifically, regarding the repeated clamping of the split clip 3, the principle is as follows: Apply an axial traction force to the pull rod 1 in the proximal direction. The pulling force is transmitted through the boss 10 at the head of the pull rod 1 and the connecting plane 31 of the split clip 3. At this time, the inner wall of the tightening tube 2 restricts the expansion tendency of the split clip 3, causing relative displacement between the two and gradually closing until a stable closing interface is formed. Before the quick-installation part 4 is engaged with the buckle 7, that is, before the buckle 7 exerts any restrictive action on the quick-installation part 4, the split clip 3 is in an elastically preloaded state. Release the traction force and push the pull rod 1 distally. Relying on the abutment of the step 11 and the connecting plane 31, and the frictional force between the split clip 3 and the elastic tooth piece 41, the split clip 3 can be pushed out of the tightening tube 2 again and restored to the open state by elastic action, thereby enabling the repeated opening and closing of the clip.

[0051] The present invention and its embodiments are schematically described above. The description is not restrictive, and only one of the embodiments of the present invention is shown in the drawings. The actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural modes and embodiments similar to the technical solution without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A quick - mounting chuck assembly, characterized in that, It comprises a pull rod (1), a tightening tube (2), a quick-install part (4) and a pair of split clips (3); The split clips (3) are arranged relative to each other, and a curved portion (30) is provided at the waist of the split clip (3), and the curved portion (30) is used to abut against the inner wall of the tightening tube (2); a connecting plane (31) is provided at the tail of the split clip (3), and the connecting planes (31) located in the tightening tube (2) are stacked and arranged, and a connecting hole (32) is provided on the connecting plane (31); an assembly section (33) is also provided on the split clip (3), and the assembly section (33) is located between the curved portion (30) and the connecting plane (31); The quick-installing member (4) includes a collar (40) and an elastic tooth piece (41), wherein the elastic tooth piece (41) is uniformly fixed to the inner side of the collar (40) along the circumferential direction, and the collar (40) is sleeved on the outer side of the assembly section (33). The elastic tooth piece (41) abuts against the assembly section (33) so that the connecting holes (32) are mutually misaligned, and a connecting channel (34) is formed between the misaligned connecting holes (32); A boss (10) is fixedly provided at the end of the pull rod (1), the outer diameter of the boss (10) is smaller than the diameter of the connecting hole (32) and larger than the effective diameter of the connecting channel (34), and the boss (10) passing through the connecting plane (31) abuts against the connecting plane (31); A buckle (7) is provided on the tightening tube (2), and the buckle (7) is used to limit the axial movement of the quick-install part (4).

2. The quick - mounting chuck assembly according to claim 1, characterized in that, The width of the elastic tooth piece (41) gradually decreases from the edge of the collar (40) toward the center of the collar (40).

3. The quick-release chuck assembly according to claim 1, characterized in that: A connecting pin (6) is provided on the assembly section (33), and the connecting pin (6) is located on the side of the quick-assembly component (4) facing the head of the split clip (3).

4. The quick-loading chuck assembly according to claim 1, wherein, The buckle (7) is a spring piece symmetrically arranged on the tightening tube (2), one end of the spring piece is fixedly connected to the tightening tube (2), and the other end of the spring piece extends to the side away from the split clamp (3) and is inclined toward the center line of the tightening tube (2), so that the minimum passing dimension between the spring pieces is smaller than the outer diameter of the quick-install part (4).

5. The quick-loading chuck assembly according to claim 4, wherein The elastic tooth piece (41) is inclined toward a side away from the split clamp (3), so that the inclined direction of the elastic tooth piece (41) is consistent with the inclined direction of the spring piece.

6. The quick - mounting chuck assembly according to claim 1 or 4, characterized in that, A blocking pin (5) is provided on the tightening tube (2), and the blocking pin (5) is located on the tightening tube (2) at a position close to the head of the split clip (3).

7. The quick-install chuck assembly according to claim 1, wherein, A cone-shaped portion (101) is provided on the boss (10).

8. The quick-connect chuck assembly according to claim 1, wherein, The quick-install part (4) is provided with at least one.

9. The quick-install chuck assembly according to claim 1, characterized in that The quick-install part (4) is made of metal.

10. The quick - mounting chuck assembly according to claim 1 or 9, characterized in that, The quick-install part (4) is integrally formed.

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