Bending structure transmission device

Abstract

The utility model discloses a bending structure transmission device, which relates to the technical field of transmission devices and comprises a joint outer cylinder, a joint jaw, a bending button fixing disc, a driving pin base, a bending button movable slip ring and a joint pull rod. The joint outer barrel is of a barrel-shaped structure, one end of the joint outer barrel is rotatably connected with a joint jaw through a joint rotating pin, the other end of the joint outer barrel is provided with a bending button fixing disc, the bending button fixing disc is sleeved with a driving pin base capable of moving in the axial direction of the joint outer barrel, and the periphery of the driving pin base is sleeved with a rotatable bending button movable sliding ring. The bending button movable slip ring can rotate to drive the driving pin base to axially move along the joint outer cylinder; the joint pull rod penetrates into the joint outer cylinder, and one end of the joint pull rod is connected with the driving pin base. The joint pull rod can drive the joint jaw to rotate around the joint rotating pin. By means of the arrangement, through the simple structure, an operator can conveniently drive the joint jaw to be bent.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission device technical field, especially a kind of bending structure transmission device. BACKGROUND

[0002] At present, in endoscopic surgery, endoscopic instrument is usually used to perform medical operation, according to the need of operation, surgeon needs to change the angle of instrument forceps head, so as to realize better operation angle of operation. But the transmission device used by the existing bending structure is complex in structure, and inconvenient to use.

[0003] Therefore, how to provide a kind of bending structure transmission device with simple structure and convenient to use is the technical problem that the person skilled in the art needs to solve at present. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of bending structure transmission device with simple structure and convenient to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of bending structure transmission device, comprising:

[0007] Joint outer cylinder, for cylindrical structure, one end is rotatably connected with joint forceps mouth by joint rotating pin, the other end is installed with bending knob fixing disc, bending knob fixing disc is set with the driving pin base that can move along the axis of joint outer cylinder, the outer periphery of driving pin base is set with the rotatable bending knob movable slip ring, bending knob movable slip ring can rotate to drive driving pin base moves along the axis of joint outer cylinder;

[0008] Joint pull rod, is arranged in the inside of joint outer cylinder, and one end is connected with driving pin base, the other end is connected with joint forceps mouth, joint pull rod can drive joint forceps mouth to rotate around joint rotating pin.

[0009] As preferred, the bending knob fixing disc is provided with two mutually parallel fixing disc guide columns, and the two sides of the fixing disc guide column are provided with a fixing disc slide.

[0010] As preferred, the middle part of the driving pin base is provided with a base pull rod hole for fixedly connecting the joint pull rod, and the two sides of the driving pin base are provided with a base sliding groove for clamping with the fixing disc guide column, and the driving pin base moves along the fixing disc slide through the base sliding groove.

[0011] As preferred, the bending knob movable slip ring is of annular structure, and is provided with a slip ring thread in the inside, and the bending knob movable slip ring is set on the outer periphery of the fixing disc guide column.

[0012] As preferred, the outer periphery of the driving pin base is provided with a base driving pin matched with the slip ring thread.

[0013] Preferably, the outer periphery of the rotating knob movable sliding ring is sleeved with a rotating knob which rotates synchronously with the rotating knob movable sliding ring, and the outer side of the rotating knob is provided with anti-skid protrusions.

[0014] Preferably, the rotating knob movable sliding ring is provided with a sliding ring notch for fixedly connecting the rotating knob.

[0015] Preferably, the joint pull rod is connected with the joint jaw through a joint rotating pin.

[0016] Preferably, the end of the fixed disc guide column is provided with a stop groove, an annular stop ring can be installed in the stop groove, and the end of the driving pin base away from the stop groove is provided with an annular baffle, the annular baffle and the annular stop ring can limit the rotating knob movable sliding ring.

[0017] Preferably, the fixed disc sliding channel is provided with a guide protrusion, and the base sliding groove is provided with a guide groove matched with the guide protrusion.

[0018] With respect to the above background technology, the bending structure transmission device provided by the utility model comprises: a joint outer cylinder, a joint jaw, a rotating knob fixed disc, a driving pin base, a rotating knob movable sliding ring and a joint pull rod; the joint outer cylinder is in a cylindrical structure, one end of the joint outer cylinder is connected with the joint jaw through a joint rotating pin, the other end of the joint outer cylinder is provided with the rotating knob fixed disc, the rotating knob fixed disc is sleeved with the driving pin base which can move axially along the joint outer cylinder, the outer periphery of the driving pin base is sleeved with the rotating knob movable sliding ring which can rotate, the rotating knob movable sliding ring can rotate to drive the driving pin base to move axially along the joint outer cylinder; the joint pull rod is arranged in the joint outer cylinder, one end of the joint pull rod is connected with the driving pin base, and the other end of the joint pull rod is connected with the joint jaw, so that the joint pull rod can drive the joint jaw to rotate around the joint rotating pin.

[0019] Specifically, the joint jaw in the application can rotate around the joint rotating pin, wherein the joint pull rod plays a role in transmitting power in the process, the joint pull rod is also connected at a position of the joint jaw away from the joint rotating pin, that is, the extension and retraction of the joint pull rod can pull the forward rotation and reverse rotation of the joint jaw; and the power for moving the joint pull rod comes from the cooperation of the rotating knob fixed disc, the driving pin base and the rotating knob movable sliding ring; wherein the rotating knob fixed disc is installed at the other end of the joint outer cylinder, the driving pin base is movably installed on the rotating knob fixed disc, and the rotating knob movable sliding ring is sleeved on the outer periphery of the rotating knob fixed disc; however, it should be noted that the rotating knob movable sliding ring can rotate around the outer periphery of the rotating knob fixed disc, and it can also drive the driving pin base to move along the axis of the joint outer cylinder while rotating; in this way, the operator can drive the driving pin base to move by rotating the rotating knob movable sliding ring, thereby driving the joint pull rod to move and finally driving the joint jaw to rotate; in this way, through the simple structure, the operator can conveniently drive the bending of the joint jaw. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0021] Figure 1 The transmission device assembly structure schematic view provided by the embodiment of the present application;

[0022] Figure 2 The transmission device cut structure schematic view provided by the embodiment of the present application;

[0023] Figure 3 The transmission device explosion structure schematic view provided by the embodiment of the present application;

[0024] Figure 4 The transmission device local assembly structure schematic view provided by the embodiment of the present application;

[0025] Figure 5 The Figure 4 The A part structure enlarged view in the embodiment of the present application;

[0026] Figure 6 The bending knob fixed disc three-dimensional structure schematic view provided by the embodiment of the present application;

[0027] Figure 7 The bending knob movable sliding ring three-dimensional structure schematic view provided by the embodiment of the present application;

[0028] Figure 8 The driving pin base three-dimensional structure schematic view provided by the embodiment of the present application.

[0029] Among them:

[0030] 1, joint jaw; 2, joint outer cylinder; 3, bending knob; 4, bending knob fixed disc; 5, bending knob movable sliding ring; 6, joint pull rod; 7, driving pin base; 8, joint bending pin; 9, joint rotating pin;

[0031] 4-1, fixed disc sliding way; 4-2, fixed disc guide column; 4-3, stop groove; 4-4, annular baffle;

[0032] 5-1, sliding ring thread; 5-2, sliding ring notch;

[0033] 7-1, base driving pin; 7-2, base pull rod hole; 7-3, base sliding slot; DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left" and "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated position or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0037] The present application aims to provide a bending structure transmission device which is simple in structure and convenient to use.

[0038] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0039] Please refer to Figures 1 to 8 The present application provides a bending structure transmission device, which comprises a joint outer cylinder 2, a joint jaw 1, a bending knob fixing disc 4, a driving pin base 7, a bending knob movable slip ring 5 and a joint pull rod 6. The joint outer cylinder 2 is a cylindrical structure, one end of which is connected to the joint jaw 1 through a joint rotating pin 9, and the other end is provided with the bending knob fixing disc 4. The bending knob fixing disc 4 is provided with the driving pin base 7 which can move axially along the joint outer cylinder 2, and the driving pin base 7 is provided with the bending knob movable slip ring 5 which can rotate to drive the driving pin base 7 to move axially along the joint outer cylinder 2. The joint pull rod 6 is arranged inside the joint outer cylinder 2, and one end of the joint pull rod 6 is connected to the driving pin base 7, and the other end is connected to the joint jaw 1. The joint pull rod 6 can drive the joint jaw 1 to rotate around the joint rotating pin 9.

[0040] Specifically, the joint jaw 1 in the present application can rotate around the joint rotating pin 9, wherein the joint pull rod 6 plays a role in transmitting power in the process, and the joint pull rod 6 is also connected at a position deviating from the joint rotating pin 9 of the joint jaw 1, that is, the extension and retraction of the joint pull rod 6 will pull the forward rotation and reverse rotation of the joint jaw 1; in the present embodiment, the left end of the joint outer cylinder 2 is provided with the joint rotating pin 9, and the joint jaw 1 is connected to the joint rotating pin 9, so that the joint jaw 1 can rotate around the joint outer cylinder 2; of course, the joint rotating pin 9 can also be arranged at the right end of the joint jaw 1, and correspondingly, the left end of the joint outer cylinder 2 is provided with a through hole for clamping the joint rotating pin 9, so that the rotating connection of the joint jaw 1 can also be achieved, as shown in Figure 4 and Figure 5 The joint rotating pin 9 is arranged at the left end of the joint outer cylinder 2, and the joint jaw 1 is connected to the joint rotating pin 9, so that the joint jaw 1 can rotate around the joint outer cylinder 2; of course, the joint rotating pin 9 can also be arranged at the right end of the joint jaw 1, and correspondingly, the left end of the joint outer cylinder 2 is provided with a through hole for clamping the joint rotating pin 9, so that the rotating connection of the joint jaw 1 can also be achieved, as shown in

[0041] The power for moving the joint pull rod 6 comes from the cooperation of the bending knob fixed disc 4, the driving pin base 7 and the bending knob movable sliding ring 5; wherein the bending knob fixed disc 4 is fixedly installed at the other end of the joint outer cylinder 2, and the driving pin base 7 is movably installed on the bending knob fixed disc 4, that is, the driving pin base 7 can move on the bending knob fixed disc 4 along the axis direction of the joint outer cylinder 2, and the right end of the joint pull rod 6 is fixedly connected with the driving pin base 7, so that the joint pull rod 6 can move with the driving pin base 7; at the same time, the bending knob movable sliding ring 5 is sleeved on the outer periphery of the bending knob fixed disc 4, that is, the bending knob movable sliding ring 5 can rotate around the bending knob fixed disc 4; but it should be noted that the bending knob movable sliding ring 5 can only rotate around the outer periphery of the bending knob fixed disc 4, but it will also drive the driving pin base 7 to move along the axis of the joint outer cylinder 2 while rotating; in this way, the operator can drive the driving pin base 7 to move by rotating the bending knob movable sliding ring 5, and then drive the joint pull rod 6 to move, and finally drive the joint jaw 1 to rotate; in this way, through a simple structure, the operator can conveniently drive the bending of the joint jaw 1.

[0042] As a preferred, the bending knob fixed disc 4 is provided with two fixed disc guide columns 4-2 which are parallel to each other, and the two sides of the fixed disc guide column 4-2 are provided with fixed disc sliding ways 4-1.

[0043] Specifically, the joint rotating pin 9 is arranged at the left end of the joint outer cylinder 2, and the joint jaw 1 is connected to the joint rotating pin 9, so that the joint jaw 1 can rotate around the joint outer cylinder 2; of course, the joint rotating pin 9 can also be arranged at the right end of the joint jaw 1, and correspondingly, the left end of the joint outer cylinder 2 is provided with a through hole for clamping the joint rotating pin 9, so that the rotating connection of the joint jaw 1 can also be achieved, as shown in Figure 6As shown, the two parallel fixed disc guide columns 4-2 are arranged on the side of the fixed disc 4 close to the jointed forceps jaw 1, and the upper and lower sides of the fixed disc guide columns 4-2 are fixed disc sliding ways 4-1; the driving pin base 7 is installed on the fixed disc guide columns 4-2 and can move along the fixed disc sliding ways 4-1; in this way, the driving pin base 7 can be guided to move along the jointed outer cylinder 2, thereby driving the jointed forceps jaw 1 to bend.

[0044] As preferred, a base pull rod hole 7-2 for fixedly connecting the jointed pull rod 6 is arranged in the middle of the driving pin base 7, and base sliding grooves 7-3 for clamping the fixed disc guide columns 4-2 are arranged on the two sides of the driving pin base 7, and the driving pin base 7 moves along the fixed disc sliding ways 4-1 through the base sliding grooves 7-3.

[0045] The driving pin base 7 is specifically as shown in Figure 8 As shown, the driving pin base 7 is a cylindrical structure, a pull rod hole is arranged in the middle of the driving pin base 7, and the rightmost end of the jointed pull rod 6 can be clamped in the pull rod hole, so that the jointed pull rod 6 and the driving pin base 7 can move synchronously; meanwhile, base sliding grooves 7-3 are arranged on the left and right sides of the driving pin base 7, the base sliding grooves 7-3 can be clamped on the fixed disc guide columns 4-2, and the upper and lower sides of the base sliding grooves 7-3 are attached to the fixed disc sliding ways 4-1, so as to guide the movement of the driving pin base 7; the fixed disc sliding ways 4-1 are arranged as a plane, which is beneficial to the smooth sliding of the driving pin base 7.

[0046] As preferred, the bending knob movable sliding ring 5 is a ring structure, and a sliding ring thread 5-1 is arranged in the inside of the bending knob movable sliding ring 5, and the bending knob movable sliding ring 5 is sleeved on the outer periphery of the fixed disc guide column 4-2.

[0047] As shown in detail, Figure 7 As shown in detail, the bending knob movable sliding ring 5 is a ring structure with a sliding ring thread 5-1 arranged in the inside of the bending knob movable sliding ring 5, and the outer periphery of the fixed disc guide column 4-2 is a circular arc structure, that is, the bending knob movable sliding ring 5 can be sleeved on the bending knob fixed disc 4, and the bending knob movable sliding ring 5 can rotate around the bending knob fixed disc 4.

[0048] Further, a base driving pin 7-1 matched with the sliding ring thread 5-1 is arranged on the outer periphery of the driving pin base 7.

[0049] As shown in detail, Figure 8As shown, a base driving pin 7-1 in a columnar structure is arranged at the top position of the driving pin base 7, which can be just clamped into the inside of the sliding ring thread 5-1 inside the installed bending knob movable sliding ring 5; it can be understood that when the bending knob movable sliding ring 5 rotates, the sliding ring thread 5-1 inside it will also rotate, since the bending knob movable sliding ring 5 itself can only rotate and cannot move axially, and the driving pin base 7 can only move axially and cannot rotate, therefore, the base driving pin 7-1 matched with the sliding ring thread 5-1 will move axially, thereby realizing the movement of the joint pull rod 6, and further realizing the bending of the joint jaw 1.

[0050] As a preferred, the bending knob movable sliding ring 5 is sleeved with a bending knob 3 which rotates synchronously, and the outer side of the bending knob 3 is provided with anti-skid protrusions.

[0051] It can be understood that, in order to facilitate the operator to rotate the bending knob movable sliding ring 5, a bending knob 3 with a larger outer diameter is further sleeved on the outer periphery of the bending knob movable sliding ring 5, and the outer periphery of the bending knob 3 is further provided with a plurality of anti-skid protrusions, so that the operator can easily rotate the bending knob 3 to realize the bending of the joint jaw 1.

[0052] As a preferred, the bending knob movable sliding ring 5 is provided with a sliding ring notch 5-2, and the sliding ring notch 5-2 is used for fixedly connecting the bending knob 3.

[0053] In this embodiment, the bending knob 3 is connected to the sliding ring notch 5-2 on the bending knob movable sliding ring 5, and the two can be connected by an inserted pin shaft, which is not limited herein as long as the fixed connection of the two can be realized.

[0054] As a preferred, the joint pull rod 6 and the joint jaw 1 are rotationally connected through a joint bending pin 8.

[0055] In this embodiment, the joint pull rod 6 and the joint jaw 1 are preferably rotationally connected through the joint bending pin 8, and of course other rotationally connecting modes can be selected according to actual conditions, which is not specifically limited herein.

[0056] As a preferred, the end of the fixed disc guide column 4-2 is provided with a stop groove 4-3, and an annular stop ring can be installed in the stop groove 4-3; the end of the driving pin base 7 away from the stop groove 4-3 is provided with an annular baffle 4-4, and the annular baffle 4-4 and the annular stop ring can limit the bending knob movable sliding ring 5.

[0057] Specifically, Figure 6As shown, in order to make the bending knob movable sliding ring 5 can be rotated on the bending knob fixed disc 4 without axial movement, the bending knob fixed disc 4 is axially limited; in this embodiment, a stop groove 4-3 is arranged at the left end of the fixed disc guide column 4-2, and an annular baffle 4-4 is arranged at the shaft end, when the bending knob movable sliding ring 5 is installed, it will be sleeved from the left end of the fixed disc guide column 4-2, and then the annular stop ring will be installed in the stop groove 4-3, so that the axial limitation of the bending knob movable sliding ring 5 can be completed.

[0058] As preferred, a guide protrusion is arranged on the fixed disc sliding channel 4-1, and a guide groove matched with the guide protrusion is arranged in the base sliding groove 7-3.

[0059] In another embodiment, a protrusion with a suitable shape, such as a square or a semicircle, can be arranged on the fixed disc sliding channel 4-1, and corresponding grooves are arranged on the upper and lower sides of the base sliding groove 7-3, so that the connection between the driving pin base 7 and the bending knob fixed disc 4 is more stable, and the movement of the driving pin base 7 is more stable.

[0060] In summary, the bending structure transmission device provided in this paper is composed of a bending knob 3, a bending knob fixed disc 4, a bending knob movable sliding ring 5, a joint pull rod 6, a driving pin base 7 and other components. The joint jaw 1 is connected with the joint pull rod 6 through the joint bending pin 8, the other end of the joint pull rod 6 is fixedly connected with the base pull rod hole 7-2 on the driving pin base 7, the base sliding groove 7-3 on the driving pin base 7 is installed on the fixed disc sliding channel 4-1 on the bending knob fixed disc 4, the bending knob movable sliding ring 5 is installed on the fixed disc guide column 4-2 on the bending knob fixed disc 4, the base driving pin 7-1 on the driving pin base 7 is clamped into the sliding ring thread 5-1 in the bending knob movable sliding ring 5, the bending knob 3 is connected with the sliding ring notch 5-2, and the joint rotating pin 9 is connected with the hole on the joint outer cylinder 2, so that the joint jaw 1 can rotate around the joint outer cylinder 2.

[0061] In use, the bending knob 3 is rotated, the bending knob 3 is fixedly connected with the sliding ring notch 5-2 on the bending knob movable sliding ring 5, the rotation of the bending knob 3 can drive the bending knob movable sliding ring 5 to rotate, the bending knob movable sliding ring 5 is provided with the sliding ring thread 5-1, and through the base driving pin 7-1, the driving pin base 7 can be translated along the fixed disc sliding channel 4-1 on the bending knob fixed disc 4, since the other end of the joint pull rod 6 is connected with the base pull rod hole 7-2 on the driving pin base 7, the joint pull rod 6 is driven to displace, the displacement of the joint pull rod 6 can pull the joint bending pin to move, the joint jaw 1 is pulled to bend around the joint outer cylinder 2 through the joint bending pin 8, and the bending swing of the joint jaw 1 is realized.

[0062] It should be noted that the relative terms, such as first and second, are used herein solely to distinguish one entity from another entity, and do not necessarily require or imply any actual relationship or order between such entities.

[0063] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0064] The above provides a detailed description of the embodiments of the present application. The principle and implementation of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A bent axis transmission characterized in that, The utility model relates to a kind of jointed pliers, including: Joint outer cylinder (2), for cylindrical structure, one end is rotatably connected with joint jaw (1) by joint rotating pin (9), the other end is equipped with bending knob fixing disc (4), the driving pin base (7) that can move along the axis of the joint outer cylinder (2) is sleeved on the bending knob fixing disc (4), the bending knob movable sliding ring (5) that can rotate is sleeved on the outer periphery of the driving pin base (7), the bending knob movable sliding ring (5) can rotate to drive the driving pin base (7) moves along the axis of the joint outer cylinder (2); Joint pull rod (6), it is arranged in the inside of the joint outer cylinder (2), and one end is connected with the driving pin base (7), the other end is connected with the joint jaw (1), the joint pull rod (6) can drive the joint jaw (1) rotate around the joint rotating pin (9).

2. The bend structure transmission device according to claim 1, characterized by The bending knob fixing disc (4) is provided with two mutually parallel fixing disc guide columns (4-2), and the two sides of the fixing disc guide column (4-2) are provided with fixing disc slideway (4-1).

3. The bending structure transmission device according to claim 2, characterized in that, The middle part of the driving pin base (7) is provided with base pull rod hole (7-2) for fixedly connecting the joint pull rod (6), and the two sides of the driving pin base (7) are provided with base sliding groove (7-3) for clamping the fixing disc guide column (4-2), and the driving pin base (7) moves along the fixing disc slideway (4-1) through the base sliding groove (7-3).

4. A twist beam drive arrangement according to claim 3, wherein The bending knob movable sliding ring (5) is annular structure, and the inner part is provided with sliding ring thread (5-1), and the bending knob movable sliding ring (5) is sleeved on the outer periphery of the fixing disc guide column (4-2).

5. A twist structure transmission according to claim 4, characterized in that The outer periphery of the driving pin base (7) is provided with base driving pin (7-1) matched with the sliding ring thread (5-1).

6. The bend structure transmission device according to claim 1, characterized by The outer periphery of the bending knob movable sliding ring (5) is sleeved with bending knob (3) that rotates synchronously, and the outer side of the bending knob (3) is provided with anti-skid convex.

7. A twist beam drive arrangement according to claim 6, wherein The bending knob movable sliding ring (5) is provided with sliding ring notch (5-2), and the sliding ring notch (5-2) is used for fixedly connecting the bending knob (3).

8. The curved continuum transmission of claim 1, wherein, The joint pull rod (6) is rotatably connected with the joint jaw (1) through joint bending pin (8).

9. The curved serpentine drive of claim 4, wherein, The end of the fixing disc guide column (4-2) is provided with stop groove (4-3), and the stop groove (4-3) can be mounted with annular stop ring, and the end, away from the stop groove (4-3), of the driving pin base (7) is provided with annular baffle (4-4), and the annular baffle (4-4) and the annular stop ring can limit the bending knob movable sliding ring (5).

10. The curved serpentine drive of claim 5, wherein, The fixing disc slideway (4-1) is provided with guide convex, and the base sliding groove (7-3) is provided with guide groove matched with the guide convex.

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