Tight threading fixing structure

Abstract

The utility model relates to a tight threading fixing structure, which belongs to the technical field of minimally invasive surgical instruments and comprises a shaft, a winding structure is fixedly mounted at the bottom end of the shaft, and a threading fixing structure capable of fixing a steel wire rope is arranged on one side, far away from the shaft, of the winding structure. According to the wire tightening and penetrating fixing structure, the wire penetrating hole is formed, a steel wire rope can penetrate through the wire winding structure and the shaft, the other side of the steel wire rope is fixed to the wire winding structure through the fixing block, due to the fact that the length of the wire after penetrating has allowance, a certain operation space is provided for wire tightening operation and wire length adjusting operation, and meanwhile the fixing space is more flexible; the fixing device is simpler in fixing and mounting, small in occupied space and good in fixing effect, simplifies a steel wire rope threading, tightening and fixing mode, provides a certain wire length adjusting space, and solves the problems that the fixing process is tedious and difficult, the tightening degree is insufficient, the wire length cannot be adjusted after fixing is completed, and the transmission problem is obvious in high-precision steel wire rope transmission. And the production requirements cannot be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of minimally invasive surgical instruments, in particular to a tight thread fixing structure. BACKGROUND

[0002] In minimally invasive surgical instruments, steel wire ropes play a crucial role. Many handheld minimally invasive surgical instruments rely on steel wire ropes for power transmission. For example, some instruments with openable and closable end effectors use steel wire ropes arranged in the operating rod of the instrument, with one end connected to the end effector and the other end connected to the driving mechanism. The steel wire rope fixing structure ensures stable transmission of the steel wire rope during operation, enabling the end effector to accurately perform actions such as clamping, cutting, and suturing.

[0003] There are two common methods for tightening and fixing steel wire ropes on the market. The first method uses threaded hollow pipes to fix and tighten the steel wire rope. This method is simple, efficient, and can be adjusted repeatedly, but the overall structure is large and not suitable for precise structures. The second method involves fixing the steel wire rope head in a designated hole after confirming the length of the wire by melting or interference structure cooperation. This method provides better fixing effect, but the fixing process is complicated and difficult, the tightening degree is insufficient, and the wire length cannot be adjusted after fixing. In high-precision steel wire rope transmission, transmission problems are obvious, which cannot meet the production needs. Therefore, a tight thread fixing structure is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] To overcome the shortcomings of the prior art, the utility model provides a tight thread fixing structure with good fixing effect, solving the problems of complicated and difficult fixing process, insufficient tightening degree, and inability to adjust the wire length after fixing, as well as obvious transmission problems in high-precision steel wire rope transmission, which cannot meet the production needs.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a tight thread fixing structure, comprising a shaft, a winding structure fixedly installed at the bottom end of the shaft, and a thread fixing structure capable of fixing the steel wire rope arranged on the side away from the shaft of the winding structure.

[0006] The thread fixing structure includes a winding fixing structure fixedly installed on the side away from the shaft of the winding structure, and a thread hole is formed in the interior of the shaft to communicate with the outside.

[0007] Further, the diameter of the thread hole is greater than the diameter of the steel wire rope, and the number of thread holes is two.

[0008] Further, a winding groove adapted to the steel wire rope is formed on the outer surface of the winding structure, and the shape of the winding structure is circular.

[0009] Further, the inside of the wire winding fixing structure is provided with two fixed through holes which are symmetrically distributed on the left and right sides of the inside of the wire winding fixing structure and are connected with the outside.

[0010] Further, the bottom of the wire winding fixing structure is fixedly provided with a fixed screw which extends to the inside of the wire winding structure, and the wire winding fixing structure and the wire winding structure are fixedly installed on the shaft through the fixed screw.

[0011] Compared with the prior art, the tight wire fixing structure has the following beneficial effects:

[0012] The tight wire fixing structure is provided with a wire hole, so that the steel wire rope can pass through the wire winding structure and the shaft, and is fixed to the wire winding structure through the fixed block on the other side. Since the wire has a surplus after being penetrated, there is a certain operation space for the tight wire operation or the wire length adjustment operation. At the same time, the fixing space is more flexible, the fixed installation is simpler, the occupied space is smaller, the fixing effect is better, the steel wire rope tight wire and fixing mode are simplified, a certain wire length adjustment space is provided, the structure is simple and easy to process, the problems of complicated and difficult fixing process and insufficient tight wire degree are solved, the wire length cannot be adjusted after the fixing is completed, the transmission problem is obvious in the high-precision steel wire rope transmission, and the production demand cannot be met. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural front view of the utility model;

[0014] Fig. 2 It is a structural sectional view of the utility model.

[0015] In the drawing: 1 shaft, 2 wire winding structure, 3 wire winding fixing structure, 4 wire hole, 5 fixed through hole, 6 fixed screw. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] Please refer to Figs. 1-2The tight threading fixing structure in the embodiment comprises a shaft 1, a winding structure 2 is fixedly installed at the bottom end of the shaft 1, a threading fixing structure capable of fixing the steel wire rope is arranged on the side of the winding structure 2 away from the shaft 1, the threading fixing structure comprises a winding fixing structure 3 fixedly installed on the side of the winding structure 2 away from the shaft 1, and a threading hole 4 in communication with the outside is formed in the inside of the shaft 1.

[0018] The diameter of the threading hole 4 is greater than the diameter of the steel wire rope, the number of the threading holes 4 is two, a winding groove matched with the steel wire rope is formed on the outer surface of the winding structure 2, the winding structure 2 is circular in shape, and the number of the winding grooves is two. The winding groove facilitates winding the steel wire rope on the winding structure 2.

[0019] It should be noted that the steel wire rope can pass through the winding structure 2 and the shaft 1 through the threading hole 4, and is fixed to the winding structure 2 on the other side by the fixing block. Since the wire length has a surplus after penetration, there is a certain operation space for tight line operation or line length adjustment operation. At the same time, since the fixing space is more flexible, the fixing installation is simpler, the occupied space is small, the fixing effect is good, the steel wire rope threading and tightening and fixing mode is simplified, a certain line length adjustment space is provided, and the structure is simple and easy to process.

[0020] In the embodiment, a fixing hole 5 in communication with the outside is formed in the inside of the winding fixing structure 3, and the number of the fixing holes 5 is two. The two fixing holes 5 are symmetrically distributed on the left and right sides in the inside of the winding fixing structure 3.

[0021] The steel wire rope can pass through the winding fixing structure 3 through the fixing hole 5, thereby achieving the effect of fixing the steel wire rope.

[0022] In the embodiment, a fixing screw 6 extending into the inside of the winding structure 2 is fixedly installed at the bottom of the winding fixing structure 3. The winding fixing structure 3 and the winding structure 2 are fixedly installed on the shaft 1 by the fixing screw 6. The winding structure 2 and the winding fixing structure 3 are fixed on the shaft 1 by the fixing screw 6, and the whole can realize synchronous rotation.

[0023] The working principle of the above embodiment is as follows:

[0024] First, the staff sets the threading hole 4, so that the steel wire rope can pass through the winding structure 2 and the shaft 1, and is fixed to the winding structure 2 on the other side by the fixing block. Since the wire length has a surplus after penetration, there is a certain operation space for tight line operation or line length adjustment operation. The winding fixing structure 3 fixes the winding structure 2 and itself on the shaft 1 by the fixing screw 6, so that the whole rotates synchronously. The steel wire rope passes through the threading hole 5 to reach the other end, at which time the fixing and tightening operation can be performed.

[0025] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0026] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A tight threading fixing structure comprising a shaft (1), characterized in that: The bottom end of the shaft (1) is fixedly installed with a winding structure (2), and the winding structure (2) is provided with a threading fixing structure capable of fixing the steel wire rope on the side away from the shaft (1). The threading fixing structure comprises a winding fixing structure (3) fixedly installed on the side of the winding structure (2) away from the shaft (1), and the inside of the shaft (1) is provided with a threading hole (4) in communication with the outside.

2. The tight threading fixing structure according to claim 1, characterized in that: The diameter of the threading hole (4) is greater than that of the steel wire rope, and the number of the threading holes (4) is two.

3. The secure threading structure of claim 1, wherein: The outer surface of the winding structure (2) is provided with a winding groove matched with the steel wire rope, and the shape of the winding structure (2) is circular.

4. The secure threading structure of claim 1, wherein: The inside of the winding fixing structure (3) is provided with a fixed perforation (5) in communication with the outside, the number of the fixed perforations (5) is two, and the two fixed perforations (5) are symmetrically distributed on the left and right sides of the inside of the winding fixing structure (3).

5. The secure threading structure of claim 1, wherein: The bottom of the winding fixing structure (3) is fixedly installed with a fixed screw (6) extending into the inside of the winding structure (2), and the winding fixing structure (3) and the winding structure (2) are fixedly installed on the shaft (1) through the fixed screw (6).

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