Steering control mechanism of endoscope

Abstract

The present invention relates to a steering control mechanism for an endoscope, comprising a positioning member and a positioning sleeve connected to the positioning member. The positioning member is provided with four rope threading holes at equal intervals along the circumference. A positioning member extension arm extends from the bottom surface of the positioning member. Each positioning member extension arm is provided with a slot connected to the rope threading hole. A ball bearing is installed in each slot. An elastic component is installed inside the positioning sleeve. A rocker arm extending from the top of the positioning sleeve is installed on the top of the elastic component. The lower end of the rocker arm is a ball head with a spherical structure. A connector is sleeved on the rocker arm. The bottom surface of the connector is provided with a connector groove with a spherical structure. Four connector extension arms extend from the connector at equal intervals along the circumference. Each connector extension arm is provided with an extension arm through hole at the end away from the connector. The invention utilizes the elastic component to effectively balance the forces acting on each traction rope, and can easily restore the traction rope to its initial state, thereby facilitating the use of the product.

Description

Technical Field

[0001] The present invention relates to an endoscope, in particular to a steering control mechanism of an endoscope. Background Art

[0002] An endoscope is a medical or industrial inspection instrument, essentially consisting of a lens, an insert, and a control terminal. The insert is externally constructed from a metal or plastic conduit, while internally routed are cables for illumination, image transmission, and an angle control cable made of steel wire for adjusting the lens angle. Controls are controlled by a control device on the control terminal. The steering control mechanism in existing endoscopes is a rigidly connected structure, unable to buffer the tension of the steel wire. This can lead to excessive slack on one side of the wire during directional adjustments, hindering its return to its original position and thus hindering the device's usability. As disclosed in patent CN215128274, the steering control mechanism has an operating rod connected to a connector, a connector connected to a support plate, and the support plate is connected to the handle by screws to support and limit the steering structure. There is no buffer device for the relevant forces between the connector and the support plate. At the same time, the traction rope is connected to the articulated ball, and the articulated ball is set in the articulated ball seat. The operation of the operating rod makes the connector drive the articulated ball seat to perform corresponding movements, and then the articulated ball installed in the articulated ball seat drives the traction rope to perform corresponding movements. During the entire steering process, when rotating in one direction, the traction rope in the other direction opposite to the direction is tightened and a force is applied to the head of the insertion part to make it bend, and the traction rope in this direction is affected. The force applied to the front end of the insertion portion is pulled forward. During the entire process, the forces acting on the traction ropes in the two directions cannot be well balanced, which will cause the traction rope on one side to be over-tightened and the traction rope on the other side to be too loose. After the force disappears, the restoring force generated by the tightened traction rope on one side is not enough to restore the traction rope on the loose side to its initial state. The next time it is used, a greater force will be needed to adjust the direction, affecting the use of the endoscope. Moreover, such a structure is not easy to return to its initial state during the first use due to the excessive friction of the traction rope in the insertion portion. After long-term use, although the friction of the traction rope in the insertion portion is reduced, after adjusting the direction, the existence of the reaction force makes it difficult to stabilize the adjusted direction, affecting the stability of the direction adjustment. Summary of the Invention

[0003] In view of the existing deficiencies, the present invention provides a steering control mechanism for an endoscope.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a steering control mechanism of an endoscope, comprising a positioning member, a positioning sleeve whose bottom end of a cylindrical structure is connected to the upper surface of the positioning member, the upper surface of the positioning member is provided with four rope threading holes at equal intervals along the circumference, the bottom surface of the positioning member is provided with positioning member extension arms at positions corresponding to the rope threading holes, each positioning member extension arm is provided with a card slot connected to the corresponding rope threading hole, and each card slot is installed with a ball bearing with an axis perpendicular to the two side walls of the card slot; an elastic component is provided inside the positioning sleeve; the top of the elastic component is provided with a roller extending from the top of the positioning sleeve. The spherical ball is mounted on the bottom of the spherical ball, and the bottom of the spherical ball is mounted on the bottom of the spherical ball. The spherical ball is mounted on the bottom of the spherical ball. The bottom of the spherical ball is mounted on the bottom of the spherical ball. The bottom of the spherical ball is mounted on the bottom of the spherical ball. The bottom of the spherical ball is mounted on the bottom of the spherical ball. The bottom of the spherical ball is mounted on the bottom of the spherical ball. The bottom of the spherical ball is mounted on the bottom of the spherical ball. The bottom of the spherical ball is mounted on the bottom of the spherical ball. The bottom of the spherical ball is mounted on the bottom of the spherical ball. The pendulum rod silicone pad is provided at the top, an annular positioning ring is provided on the top of the pendulum rod silicone pad, and a telescopic spring is provided between the pendulum rod silicone pad and the adjusting rod. The positioning sleeve is provided outside the positioning ring, the pendulum rod silicone pad, the telescopic spring and the adjusting rod. The lower end of the pendulum rod is installed on the top of the pendulum rod silicone pad and the upper end passes through the positioning ring and the positioning sleeve in sequence; the upper part of the adjusting rod is a cylindrical protrusion that abuts against the top end of the positioning part through hole. The top surface of the adjusting rod is provided with an adjusting rod groove that is circular and has a conical bottom surface and is coaxial with the positioning part through hole. The pendulum rod silicone pad cover is provided on the adjusting rod groove. The telescopic spring is installed In the adjusting rod groove, the two ends correspond to the bottom surface of the rocker arm silicone pad and the bottom of the adjusting rod groove; the top surface of the rocker arm silicone pad is provided with a hemispherical silicone pad groove, and the positioning ring cover is provided on the silicone pad groove. The inner ring diameter of the positioning ring gradually increases from top to bottom and the diameter of the bottom end is the same as the diameter of the top of the silicone pad groove, and the ball head is installed in the silicone pad groove; a connecting ball is detachably installed in the extension arm through hole, and a traction rope is connected to the connecting ball, and the end of the traction rope away from the connecting ball passes through the extension arm through hole, the rope through hole and the slot in turn, and the traction rope is tangent to the outer wall of the ball bearing in the slot.

[0005] Preferably, the side wall of the rocker arm has a boss extending radially outwards at a position adjacent to the ball head and surrounding the rocker arm, and the bottom of the groove of the connector is provided with a recessed portion that matches the boss and is snapped into.

[0006] Preferably, the top of the connector is extended with a truncated cone-shaped extension column that is matched and sleeved on the rocker arm and coaxial with the connector groove. The center of the extension column is provided with an extension column through hole that passes through the upper and lower bottom surfaces of the extension column and through which the matching rocker arm passes.

[0007] Preferably, a notch is provided on a side of the extension arm through hole away from the connecting piece.

[0008] Preferably, a mounting tube is installed in each of the extension arm through holes. The mounting tube is a cylindrical structure and the inner ring diameter of the mounting tube gradually decreases near the lower end. The connecting ball is installed in the mounting tube.

[0009] Preferably, a positioning sleeve protrusion is radially extended outward from the bottom end of the positioning sleeve and surrounds the positioning sleeve, and the positioning sleeve is connected to the positioning piece via the positioning sleeve protrusion.

[0010] Preferably, the upper end of each rope threading hole is a rounded structure.

[0011] The beneficial effects of the present invention are: the invention utilizes the elastic component to well balance the forces acting on each traction rope, avoiding the problem of the traction rope being too tight or too loose during the direction adjustment process, and utilizing the elastic force of the elastic component to assist in achieving the restoration of the traction rope to its initial state, thereby facilitating the use of the product. Moreover, the use of the ball bearing can facilitate the traction of the traction rope, reduce the friction between the traction rope and the positioning member, and increase the service life of the traction rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic cross-sectional structural diagram of an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present invention without the connecting ball and the traction rope;

[0014] Figure 3 A schematic diagram of the structure of an embodiment of the present invention without the connection ball and the traction rope installed;

[0015] Figure 4 This is a structural schematic diagram of the connector according to an embodiment of the present invention without the installation cylinder installed on the front side;

[0016] Figure 5 This is a structural schematic diagram of the bottom surface of the connector according to an embodiment of the present invention with a mounting cylinder installed;

[0017] Figure 6 1 is a schematic diagram of the front structure of a positioning member according to an embodiment of the present invention;

[0018] Figure 7 This is a schematic structural diagram of the bottom surface of a positioning member according to an embodiment of the present invention;

[0019] Names and serial numbers of parts in the figure: 1- positioning member 10- rope threading hole 11- positioning member extension arm 12- positioning member through hole 110- slot 2- positioning sleeve 20- positioning sleeve protrusion 3- ball bearing 4- elastic component 40- adjusting rod 41- rocker arm silicone pad 42- positioning ring 400- protrusion 401- adjusting rod groove 410- silicone pad groove 5- rocker arm 50- ball head 51- boss 6- connecting member 60- connecting member groove 61- connecting member extension arm 62- recessed portion 63- extension column 610- extension arm through hole 611- notch 630- extension column through hole 7- telescopic spring 8- connecting ball 80- mounting tube 9- traction rope. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with embodiment, and is described clearly and completely, and it should be understood that these embodiments are for illustrating the present invention and are not limited to the scope of limiting the present invention. The implementation conditions adopted in the embodiment can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not indicated are generally the conditions in routine experiments. In addition, the directional terms mentioned in the present invention, for example, "up", "down", "front", "back", "left", "right", "inside", "outside" etc., are only with reference to the directions of the attached diagrams, and the directional terms used are in order to better and more clearly illustrate and understand the present invention, rather than to indicate or allude to the orientation that the present invention must have, and therefore can not be construed as limitations of the present invention.

[0021] The present invention is implemented as follows Figures 1 to 7As shown in, a steering control mechanism of an endoscope comprises a positioning member 1, a positioning sleeve 2 whose bottom end of a cylindrical structure is connected to the upper surface of the positioning member 1, the positioning member 1 is used to install the steering control mechanism on the control handle to facilitate the manipulation of the rocker arm 5, and the positioning sleeve 2 facilitates the arrangement of the elastic component 4 and the rocker arm 5 to avoid the influence of other components on them, and the upper surface of the positioning member 1 is provided with four rope threading holes 10 at equal intervals along the circumference, that is, the four rope threading holes 10 are located at a position that divides a circle into four equal parts, so that the forces in the four directions during operation will be more balanced, and the bottom surface of the positioning member 1 is extended with positioning member extension arms 11 at positions corresponding to the rope threading holes 10, and each of the positioning member extension arms 11 has A card slot 110 is provided which is connected to the corresponding rope threading hole 11. Each of the card slots 110 is equipped with a ball bearing 3 whose axis is perpendicular to the two side walls of the card slot 110. That is to say, four positioning member extension arms 11 are extended from the bottom surface of the positioning member 1. The four positioning member extension arms 11 and the four rope threading holes 10 are one-to-one corresponding, and the card slots 110 on the positioning member extension arms 11 are connected to the rope threading holes 10. The two ends of the ball bearing 3 are correspondingly installed on the opposite groove walls of the card slot 110. When the traction rope 9 passes through the card slot 110, it is pressed against the ball bearing 3 and will not be pressed against the bottom of the card slot 110. As the traction rope 9 is pulled, the ball bearing 3 will rotate, and rolling friction is formed between the two, thereby reducing the friction on the traction rope 9. The top of the positioning sleeve 2 is radially inwardly extended to limit the annular limiting boss of the elastic component 4, so that the elastic component 4 will not fall from the top of the positioning sleeve 2, and the top of the elastic component 4 is installed with a rocker bar 5 passing through the top of the positioning sleeve 2; the positioning sleeve 2 is installed on the upper surface of the positioning member 1, which means that the bottom end of the elastic component 4 corresponds to the upper surface of the positioning member 1 and the top end corresponds to the lower end of the rocker bar 5. When the direction is adjusted by the rocker bar 5, the traction rope 9 on one side of the traction rope 9 on the opposite sides is pulled and tightened to drive the head of the endoscope insertion part to bend, and the traction rope 9 on the other side is pulled toward the head of the insertion part. In this process, the elastic component When pressure is applied toward the head of the insertion part 4, the elastic component 4 will buffer the force on the traction ropes 9 on both sides, preventing the traction ropes 9 from being too tight or too loose. After the force of the adjustment rocker 5 disappears, under the action of the elastic component 4, the traction ropes 9 on both sides will make opposite movements, so that the traction ropes 9 on both sides can be easily restored to their initial state. The elastic component 4 is used to well balance the force on each traction rope 9, avoiding the problem of the traction rope 9 being too tight or too loose during the direction adjustment process, and utilizing the elastic force of the elastic component 4 to assist in realizing the restoration of the initial state of the traction rope 9, which is convenient for the use of the product and also well solves the influence of the change of the friction force of the traction rope 9 in the insertion part on the stability of the adjustment direction.The lower end of the swing rod 5 is a ball head 50 with a spherical structure installed on the elastic component 4. The ball head 50 facilitates the rotation of the swing rod 5, which is convenient for adjusting the direction of the endoscope; the swing rod 5 is provided with a connecting piece 6 with a spherical table structure. The connecting piece 6 moves with the movement of the swing rod 5. The spherical table structure makes it possible for the top of the connecting piece 6 to have no protruding points or edges, which will not affect the swing of the swing rod 5. The bottom surface of the connecting piece 6 is provided with a connecting piece groove 60 with a spherical table structure at the position corresponding to the positioning sleeve 2. The upper part of the positioning sleeve 2 is in the connecting piece groove 60, which makes the structure between the swing rod 5 and the positioning sleeve 2 more stable. Four connector extension arms 61 extend circumferentially and at equal intervals from the connector 6. Each of these extension arms 61 is provided with an extension arm through-hole 610 extending through the upper and lower surfaces of the extension arm 61 at the end away from the connector 6. During assembly, the extension arms 61 correspond one-to-one with the rope through-holes 10 on the positioning member 1, and the corresponding extension arms 61 and rope through-holes 10 are located on the same side. The extension arm through-holes 610 are used to mount the connecting ball 8 connected to the traction rope 9. The traction rope 9 passes through the extension arm through-holes 610, then enters the slot 110 through the rope through-holes 10, and finally is inserted into the insertion portion to connect with the head of the insertion portion.

[0022] For the elastic component 4, a runway-shaped positioning member through hole 12 is provided at the center of the positioning member 1. The elastic component 4 includes an adjusting rod 40 matched and installed in the positioning member through hole 12, a rocker arm silicone pad 41 provided on the top of the adjusting rod 40, an annular positioning ring 42 provided on the top of the rocker arm silicone pad 41, and a telescopic spring 7 provided between the rocker arm silicone pad 41 and the adjusting rod 40. The upper part of the adjusting rod 40 is abutted against the cylindrical protrusion 400 at the top of the positioning member through hole 610, that is, the upper part of the adjusting rod 40 protrudes from the positioning member through hole 610, and its abutment against the top of the positioning member through hole 610 prevents the adjusting rod 40 from The bottom of the adjusting rod 40 is the same shape as the positioning hole 610 and is matched to be installed in the positioning hole 610, thus avoiding the rotation of the adjusting rod 40 in the positioning hole 610. The pendulum silicone pad 41 can be deformed by the pressure applied by the ball head 50 of the pendulum 5 during the movement of the pendulum 5, thereby reducing the friction between the two and facilitating the movement of the pendulum 5. The positioning ring 42 limits the ball head 50 in the space formed by the positioning ring 42 and the silicone pad groove 410, thereby positioning the pendulum 5. The top surface of the adjusting rod 40 is provided with a circular shape and a conical structure on the bottom surface, which is aligned with the positioning hole 1 2 coaxial adjustment rod groove 401, the rocker arm silicone pad 41 is covered on the adjustment rod groove 401, the telescopic spring 7 is installed in the adjustment rod groove 401 and its two ends are correspondingly abutted against the bottom surface of the rocker arm silicone pad 41 and the bottom of the adjustment rod groove 401, so that the telescopic spring 7 is limited in the adjustment rod groove 401, and the elastic force of the spring is used to balance the force on each traction rope 9, thereby assisting in achieving the restoration of the traction rope 9 to its initial state; the top surface of the rocker arm silicone pad 41 is provided with a hemispherical silicone pad groove 410, and the positioning ring 42 is covered on the silicone pad groove 410, and the inner ring diameter of the positioning ring 42 gradually increases from top to bottom and the diameter of the bottom end is The positioning sleeve 2 has the same diameter as the top of the silicone pad groove 410, and is mounted on the outside of the positioning ring 42, the rocker arm silicone pad 41, the telescopic spring 7 and the adjusting rod 40. The lower end of the rocker arm 5 is installed on the top of the rocker arm silicone pad 41 and the upper end passes through the positioning ring 42 and the positioning sleeve 2 in sequence. The ball head 50 is installed in the silicone pad groove 410. Such a structure limits the ball head 50, and has a stable force application point when the rocker arm 5 adjusts its direction, which facilitates the adjustment of the direction of the rocker arm 5. The positioning sleeve 2 forms a stable structure between the positioning ring 42, the rocker arm silicone pad 41 and the adjusting rod 40, which is more compact and avoids the influence of other external components on them.

[0023] Further improvements, such as Figure 1 and Figure 2As shown in the figure, the side wall of the rocker arm 5 is provided with a boss 51 extending radially outwardly around the rocker arm 5 at a position adjacent to the ball head 50, and the bottom of the groove of the connecting member is provided with a recessed portion 62 that matches the boss 51 and is snapped into. In this way, through the engagement of the boss 51 and the recessed portion 62, the rocker arm 5 and the connecting member 6 form a stable connection structure, which facilitates the synchronous action of the rocker arm 5 and the connecting member 6 to achieve directional adjustment.

[0024] Further improvements, such as Figure 4 As shown in the figure, the top of the connecting member 6 is extended with a truncated cone-shaped extension column 63 which is matched and sleeved on the rocker arm 5 and is coaxial with the connecting member groove 60. That is, the extension column 63 is truncated cone-shaped and has an extension column through hole 630 in the center which passes through the upper and lower bottom surfaces of the extension column 63 and is matched with the rocker arm 5 to pass through. The extension column 63 increases the surface area on which the force is applied when the rocker arm 5 moves, making it easier for the rocker arm 5 to operate and drive the connecting member 6.

[0025] Further improvements, such as Figure 1As shown in the figure, a connecting ball 8 is detachably installed in the extension arm through hole 610, and a traction rope 9 is connected to the connecting ball 8. The end of the traction rope 9 away from the connecting ball 8 passes through the extension arm through hole 610, the rope through hole 10 and the card slot 110 in sequence, and the traction rope 9 is tangent to the outer wall of the ball bearing 3 in the card slot 110. At this time, the end of the traction rope 9 away from the connecting ball 8 passes through the extension arm through hole 610, the rope through hole 10 and the card slot 110 and is connected to the head of the endoscope insertion part. In this way, when the swing rod 5 adjusts its direction, the effect The force is transmitted to the connecting ball 8 in sequence through the connecting member 6 and the connecting member extension arm 61, and the connecting ball 8 drives the traction rope 9 to move to achieve the adjustment of the direction of the endoscope head. At the same time, the traction rope 9 is tangent to the outer wall of the ball bearing 3 in the card slot 110, forming a structure similar to that of a circle and a straight line being tangent. This facilitates the movement of the traction rope 9 relative to the ball bearing 3 when adjusting the direction, and forms rolling friction between the two, solving the problem that the traction rope 9 in the traditional endoscope has high sliding friction resistance, is difficult to adjust, and is also easy to cause damage to the traction rope 9. The extension arm through hole 610 is provided with a notch 611 on the side away from the connecting member 6. The provision of the notch 611 facilitates the installation of the connecting ball 8 in the extension arm through hole 610 after the traction rope 9 is connected. Each of the extension arm through holes 610 is provided with a mounting tube 80. The mounting tube 80 is cylindrical in structure and the inner ring diameter of the mounting tube 80 gradually decreases near the lower end. The connecting ball 8 is installed in the mounting tube 80. The mounting tube 80 is used to install the connecting ball 8 for connecting the traction rope 9. The smaller diameter of the lower end prevents the connecting ball 8 from falling out of the mounting tube 80. The provision of the mounting tube 80 avoids wear on the extension arm through hole 610 during direction adjustment and also reduces the range of motion of the connecting ball 8, which is more conducive to direction adjustment. In this case, the upper end of the hole wall of each extension arm through hole 610 can be recessed to form a step. The upper end of the outer wall of the mounting tube has a mounting tube extension arm extending radially outward around the mounting tube. After the mounting tube 80 is installed in the extension arm through hole 610, the bottom surface of the mounting tube extension arm presses against the step, facilitating the installation of the mounting tube 80 in the extension arm through hole 610.

[0026] Further improvements, such as Figures 1 to 3 As shown in the figure, the bottom end of the positioning sleeve 2 extends radially outward with a positioning sleeve protrusion 20 that surrounds the positioning sleeve 2. The positioning sleeve 2 is connected to the positioning member 1 through the positioning sleeve protrusion 20. At this time, a through hole can be set on the positioning sleeve protrusion 20, and then the positioning sleeve 2 is connected to the positioning member 1 by screws to facilitate the connection between the positioning sleeve 2 and the positioning member 1.

[0027] Further improvements, such as Figure 6As shown in the figure, the upper end of each rope threading hole 10 is a chamfered structure. The chamfered structure prevents the upper end of the rope threading hole 10 from having protruding edges, thereby avoiding the problem of the traction rope 9 being broken due to the friction of the protruding edges, thereby improving the service life.

[0028] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made based on the present invention. Therefore, such modifications and improvements, which do not depart from the spirit of the present invention, are intended to fall within the scope of protection claimed herein.

Claims

1. A steering control mechanism for an endoscope, characterized in that: The invention comprises a positioning member, a positioning sleeve whose bottom end of a cylindrical structure is connected to the upper surface of the positioning member, the upper surface of the positioning member is provided with four rope threading holes at equal intervals along the circumferential direction, the bottom surface of the positioning member is provided with a positioning member extension arm at a position corresponding to the rope threading hole, each positioning member extension arm is provided with a card slot communicating with the corresponding rope threading hole, and each card slot is installed with a ball bearing whose axis is perpendicular to the two side walls of the card slot; an elastic component is provided in the positioning sleeve; a rocker rod passing through the top of the positioning sleeve is installed on the top of the elastic component; the lower end of the rocker rod is installed on the elastic component. A ball head with a spherical structure; a connecting piece with a spherical table structure is sleeved on the rocker arm, and a connecting piece groove with a spherical table structure is provided on the bottom surface of the connecting piece at a position corresponding to the positioning sleeve; four connecting piece extension arms are extended at equal intervals in the circumferential direction of the connecting piece, and each of the connecting piece extension arms is provided with an extension arm through-hole penetrating the upper and lower surfaces of the connecting piece extension arm at the end away from the connecting piece; a positioning piece through-hole in the shape of a runway is provided in the center of the positioning piece, and the elastic component includes an adjustment rod matched and installed in the positioning piece through-hole, a rocker arm silicone pad provided on the top of the adjustment rod, and a rocker arm silicone pad provided on the top of the rocker arm silicone pad. The annular positioning ring at the top and the telescopic spring arranged between the rocker silicone pad and the adjusting rod are provided. The positioning sleeve is arranged on the outside of the positioning ring, the rocker silicone pad, the telescopic spring and the adjusting rod. The lower end of the rocker is installed on the top of the rocker silicone pad and the upper end passes through the positioning ring and the positioning sleeve in sequence; the upper part of the adjusting rod is a cylindrical protrusion that abuts against the top of the positioning part through hole, and the top surface of the adjusting rod is provided with a circular adjusting rod groove with a conical structure on the bottom and coaxial with the positioning part through hole. The rocker silicone pad cover is provided on the adjusting rod groove, and the telescopic spring is installed in the adjusting rod groove and the two sides are The end corresponds to the bottom surface of the rocker arm silicone pad and the bottom of the adjusting rod groove; the top surface of the rocker arm silicone pad is provided with a hemispherical silicone pad groove, and the positioning ring cover is provided on the silicone pad groove. The inner ring diameter of the positioning ring gradually increases from top to bottom and the diameter of the bottom end is the same as the diameter of the top of the silicone pad groove, and the ball head is installed in the silicone pad groove; a connecting ball is detachably installed in the extension arm through hole, and a traction rope is connected to the connecting ball, and the end of the traction rope away from the connecting ball passes through the extension arm through hole, the rope through hole and the slot in turn, and the traction rope is tangent to the outer wall of the ball bearing in the slot.

2. The steering control mechanism of the endoscope according to claim 1, characterized in that : The side wall of the rocker arm has a boss extending radially outward at a position adjacent to the ball head, which surrounds the rocker arm. The bottom of the groove of the connecting piece is provided with a recessed portion that matches the boss and is snapped into.

3. The steering control mechanism of the endoscope according to claim 1, characterized in that : The top of the connecting piece is extended with a truncated cone-shaped extension column that is matched and sleeved on the rocker arm and coaxial with the connecting piece groove. The center of the extension column is provided with an extension column through hole that passes through the upper and lower bottom surfaces of the extension column and through which the matching rocker arm passes.

4. The steering control mechanism of the endoscope according to claim 3, characterized in that A notch is provided on the side of the extension arm through hole away from the connecting piece.

5. The steering control mechanism of the endoscope according to claim 1, characterized in that : A mounting tube is installed in each of the extension arm through holes. The mounting tube is a cylindrical structure and the inner ring diameter of the mounting tube gradually decreases near the lower end position. The connecting ball is installed in the mounting tube.

6. The steering control mechanism of the endoscope according to claim 1, characterized in that The bottom end of the positioning sleeve has a positioning sleeve protrusion extending radially outward and surrounding the positioning sleeve, and the positioning sleeve is connected to the positioning piece through the positioning sleeve protrusion.

7. The steering control mechanism of the endoscope according to claim 1, characterized in that The upper end of each rope threading hole is a rounded structure.

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