JP2012020012A - Endoscope insertion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope insertion device capable of easily and smoothly performing insertion operation and preventing a foreign matter from penetrating into the insertion part of the insertion device at the time of insertion operation.SOLUTION: The endoscope insertion device 1 for inserting an endoscope 50 into the deep part of the colon 99 includes: a first opening and closing unit 10 freely moving in the direction of an insertion axis; a second opening and closing unit 20 freely moving on the axis of the first opening and closing unit 10; and opening and closing part sets 11 and 21 equipped with a first opening and closing member 15a equipped with the contact member 30 provided to the first opening and closing unit 10, freely expanded and contracted in the diametric direction thereof and brought into contact with the colon 99 when diametrically expanded, a second opening and closing member 25a equipped with the contact member 30 provided to the second opening and closing unit 20 and opening and closing holding parts 16 and 26 for changing over the opening and closing states of the first opening and closing member 15a and the second opening and closing member 25a. Elastic members 103 and 104 for preventing the penetration of the foreign matter are provided on the inner and outer surface sides of the opening and closing units 10 and 20 moving in the direction of the insertion axis.

Description

  The present invention relates to an endoscope insertion device that introduces an endoscope disposed in an insertion device insertion portion into a deep portion in a tube.

  In recent years, in the medical field, an endoscope provided with an elongated and flexible insertion portion has been used. In general, the insertion portion of this endoscope is provided with an observation optical system and an illumination optical system at the distal end, and is curved in two directions up and down or four directions up and down and left and right on the rear side of the distal end. A bending portion is provided. According to the endoscope having such a configuration, while the observation optical system observes the inside of the tube, the bending portion is appropriately operated by bending, and the insertion portion is introduced toward the deep portion in the tube. It becomes possible.

  However, when inserting a flexible insertion portion into, for example, the small intestine, the surgeon must keep the amount of insertion force small for the purpose of reducing the burden on the patient because the intestinal tract is bent in a complex manner. An insertion operation is performed. For this reason, it has been difficult for the surgeon to simply insert into the small intestine.

  For this reason, in the endoscope insertion procedure, in addition to the bending operation, a technique such as a twisting operation, a dragging operation, and a shaft holding is required, and an air supply device for expanding a lumen or an insertion state is confirmed. A device has been devised so that the insertion can be performed efficiently by using a wire device or the like.

For example, Patent Document 1 discloses an endoscope insertion apparatus in which a medical instrument having an endoscope function can be inserted into a deep part by a simple operation. In this endoscope insertion apparatus, a medical instrument having an endoscope function can be surely inserted deeply by repeating the following operations.
First, in the state where the balloon part of the medical instrument is inflated and fixed to the intestinal wall, the operator performs an operation of inserting the overtube including the contracted balloon part into the deep intestine from the balloon part of the medical instrument that is inflated. Do. Subsequently, the surgeon inflates the balloon portion of the overtube and fixes it to the intestinal wall, while deflating the balloon portion of the medical instrument and inflating the medical instrument including the balloon portion in the contracted state. Insert into the deep intestine from the balloon. Subsequently, the surgeon inflates the balloon part of the medical instrument and fixes it to the intestinal wall, while contracting the balloon part of the overtube and inflating the overtube including the balloon part in the contracted state. Insert into the deep part of the intestine from the center.

JP 2009-50559 A

  However, in the endoscope insertion device of Patent Document 1, the operation of inflating or deflating each balloon portion and the operation of inserting the first medical instrument or overtube having the deflated balloon portion into the deep intestine are repeated. Since it needs to be performed, the insertion operation is complicated.

  The present invention has been made in view of the above circumstances, and the insertion operation into the deep portion of the endoscope insertion portion can be performed easily and smoothly, and a foreign object enters the insertion device insertion portion during the insertion operation. An object of the present invention is to provide an endoscope insertion device that prevents the operability from being impaired.

An endoscope insertion apparatus according to the present invention is an endoscope insertion apparatus for inserting an endoscope into a deep part of a tube, the first opening / closing unit being movable in the direction of an insertion axis, and the first opening / closing unit. A second opening / closing unit that is movable on the same axis, and a contact member that is provided in the first opening / closing unit and that abuts against the inside of the pipe when the diameter is increased and decreased in the radial direction. A first opening / closing portion; a second opening / closing portion provided in the second opening / closing unit; and a second opening / closing portion provided with a contact member that comes into contact with the inside of the pipe when the diameter is increased and decreased in a radial direction. In an endoscope insertion device comprising: an opening / closing state switching means for switching an opening / closing state of one opening / closing portion and the second opening / closing portion,
Provided with an elastic member for preventing intrusion of foreign matter on the inner surface side of the first opening / closing unit or the second opening / closing unit moving in the direction of the insertion shaft and on the outer surface side of the first opening / closing unit and the second opening / closing unit. Features.

  According to the present invention, the insertion operation to the deep part of the endoscope insertion part can be performed easily and smoothly, and the operability is impaired due to the entry of foreign matter into the insertion apparatus insertion part during the insertion operation. An endoscope insertion device that can be prevented can be realized.

Explanatory drawing including the front-end | tip part enlarged view explaining an endoscope insertion apparatus Disassembled perspective view of an endoscope insertion apparatus configured to include a sliding operation interlocking opening / closing unit, a first sliding member, a second sliding member, and the like. Explanatory drawing explaining the fully open state which the opening / closing part group of the 1st opening / closing unit which comprises a sliding operation interlocking opening / closing unit and the opening / closing part of the 2nd opening / closing unit became an open state An exploded perspective view of a sliding operation interlocking opening / closing unit including a tip cover member, a first opening / closing unit, a second opening / closing unit, and the like. The disassembled perspective view of the 1st opening / closing unit comprised including a unit main body and four 1st opening / closing part groups etc. Diagram explaining the butting part An exploded perspective view of a first opening / closing part set including a first opening / closing part set main body, a first opening / closing link, a first opening / closing holding part, a link spring, a holding part spring, a contact member and the like. The figure explaining operation | movement of the opening / closing part of the 1st opening / closing part group fixed to the unit main body. The disassembled perspective view of the 2nd opening / closing unit comprised including a base end part structure frame, four 2nd opening / closing part groups, etc. An exploded perspective view of the second opening / closing part set including the second opening / closing part set main body, the second opening / closing link, the second opening / closing holding part, the link spring, the holding part spring, the contact member and the like. The figure explaining operation | movement of the opening / closing part of the 2nd opening / closing part group fixed to the base end part structure frame The figure explaining a tip part composition frame The figure explaining the endoscope system comprised combining the endoscope insertion apparatus and the endoscope The figure explaining the state which inserted the insertion apparatus insertion part of the endoscope insertion apparatus which comprises an endoscope system in piping. The figure explaining the state which inserted the insertion apparatus insertion part of the endoscope insertion apparatus in the deep part of piping. The figure explaining the state which inserted the insertion apparatus insertion part of the endoscope insertion apparatus which comprises an endoscope system into the large intestine. FIGS. 16A and 16B are diagrams for explaining a procedure for inserting the endoscope insertion device into the deep part of the large intestine, in which FIG. 16A is a diagram for explaining the start of scooping of the large intestine and FIG. FIG. 16C is a diagram for explaining a state in which the large intestine folds are gathered by performing the dragging operation a plurality of times, and FIG. 16C is a diagram for explaining a state in which the pulling operation is performed to linearize the large intestine. FIG. 17A is a view for explaining a technique for advancing the endoscope insertion apparatus toward a deep portion in the large intestine where the endoscope is linearized, and FIG. 17A is a diagram showing a state in which the endoscope insertion apparatus starts to advance, FIG. (B) is a figure which shows the state which the endoscope insertion apparatus was advanced. FIG. 18A is a diagram for explaining a hand operation of the first sliding member and the second sliding member, and FIG. 18A shows the first sliding in the initial state in which the first opening / closing member and the second opening / closing member are closed. FIGS. 18B and 18H are diagrams showing the positional relationship between the moving member and the second sliding member, and are examples of the dragging operation, and the base end of the first sliding member is moved. It is a figure explaining the hand operation which operates a 2nd sliding member and opens and closes a 1st opening-closing member and a 2nd opening-closing member instead. (I) of FIG. 18 is a diagram for explaining an operation when the endoscope insertion apparatus is advanced. The figure explaining the initial state of the closed state of the 1st opening-and-closing member and the 2nd opening-and-closing member in the operation state of (A) of FIG. The figure explaining operation | movement of a 2nd opening / closing unit when a movement is started toward the front end side as shown to the arrow of (B) of FIG. The figure which moved the 2nd sliding member to the most tip side as shown to the continuous line of FIG. 18 (B), and the 2nd opening-and-closing member was in the maximum open state. After the second opening / closing member reaches the maximum open state, as shown in FIG. 18C, the second sliding member is moved in the opposite direction, and the blade member of the second opening / closing unit and the blade of the first opening / closing unit are moved. Illustration of contact with member From the state where the blade member of the second opening / closing unit and the blade member of the first opening / closing unit are in contact with each other, the second sliding member is further moved in the opposite direction as shown in FIG. The notch part and the tooth part are in the unlocked state After the notch portion and the tooth portion of the first opening / closing unit are in the non-locking state, the second sliding member further moves in the direction of FIG. 18 (E) approaching the proximal end of the first sliding member. The figure which the base end part of the front-end | tip part structure frame contact | abutted to the engaging protrusion of the slider of the 1st opening / closing unit After the proximal end portion of the distal end configuration frame abuts the engaging protrusion of the first opening / closing unit, the second sliding member is closest to the proximal end of the first sliding member as shown in FIG. The opening / closing members of the first opening / closing unit and the second opening / closing unit are in the maximum open state. After the opening / closing members of the first opening / closing unit and the second opening / closing unit are in the maximum open state, the second sliding member is moved again to the tip side as shown in FIG. The figure which the blade member and the blade member of the 1st opening-and-closing unit contacted When the blade member of the second opening / closing unit and the blade member of the first opening / closing unit are in contact with each other, the second sliding member is further moved to the distal end side as shown in FIG. The notch part and tooth | gear part of this became the non-locking state, and the figure which the 2nd opening-and-closing member changed from the open state to the closed state The figure which has moved the 2nd sliding member to the tip side again after the 2nd opening-and-closing member changed to the closed state, and is moving the 2nd sliding member toward the tip side again. The figure which moved the 2nd sliding member to the most front end side similarly to FIG. 21, and made the 1st opening / closing member and the 2nd opening / closing member into the maximum open state After the first opening and closing member and the second opening and closing member are in the maximum open state, the second sliding member is moved in the opposite direction as in FIG. The figure which contacted the blade member of the opening and closing unit After the blade member of the second opening / closing unit and the blade member of the first opening / closing unit are in contact with each other, the second sliding member is further moved in the opposite direction similarly to FIG. The figure which the notch part and tooth | gear part of the unit made the non-locking state, and the 1st opening / closing member changed to the closed state The figure which shows the tip spring covered with the expansion cover The figure which shows an endoscope insertion apparatus provided with the elastic tube body which coat | covers a 1st opening / closing unit and a 2nd opening / closing unit.

Embodiments of the present invention will be described below with reference to the drawings.
The configuration of the endoscope insertion apparatus 1 will be described with reference to FIGS.
As shown in FIG. 1, an endoscope insertion apparatus 1 includes a sliding operation interlocking opening / closing unit (hereinafter abbreviated as an interlocking opening / closing unit) 2 located at a distal end, and an insertion apparatus insertion part 3 connected to the interlocking opening / closing unit 2. And is mainly composed.

  The insertion device insertion portion 3 includes a first sliding member 4 and a second sliding member 5. The first sliding member 4 and the second sliding member 5 are slidable. The interlocking opening / closing unit 2 mainly includes a first opening / closing unit 10 having an opening / closing mechanism and a second opening / closing unit 20.

The first sliding member 4 and the second sliding member 5 are tube members having through holes in the longitudinal axis direction.
The first sliding member 4 is, for example, a flexible tube having flexibility or a hard tube. A first opening / closing unit 10 is fixed to the distal end portion of the first sliding member 4, and a first grip portion 6 is integrally fixed to the proximal end portion of the first sliding member 4.

  On the other hand, the second sliding member 5 is, for example, a flexible tube having flexibility or a hard tube. A second opening / closing unit 20 is fixed to the distal end portion of the second sliding member 5, and a second grip portion 7 is integrally fixed to the proximal end portion of the second sliding member 5.

In the endoscope insertion apparatus 1, an operation unit 8 is configured by the first grip unit 6 and the second grip unit 7.
In the present embodiment, the first sliding member 4 and the second sliding member 5 will be described as flexible tubes. In the present embodiment, the first sliding member 4 is slidably disposed in the pipe of the second sliding member 5.

  As shown in FIGS. 1 and 2, the cross-sectional shapes of the first sliding member 4 and the second sliding member 5 are, for example, a circular shape or a square shape such as a quadrangle or a hexagon. In this embodiment, the cross-sectional shape is a circular shape. It is. Moreover, the cross-sectional shape of the 1st grip part 6 and the 2nd grip part 7 is the same as the cross-sectional shape of the 1st sliding member 4 and the 2nd sliding member 5, and is circular in this embodiment.

  The first sliding member 4 is slidably disposed in the through holes of the second sliding member 5 and the second grip portion 7. In this configuration, the length dimension of the first sliding member 4 with which the first grip portion 6 is integrated is set longer than the length dimension of the second sliding member 5 with which the second grip portion 7 is integrated. . An insertion portion of an endoscope to be described later is inserted into the through hole of the first grip portion 6 and the through hole of the first sliding member 4.

  Reference numeral 4 a denotes a first opening / closing unit connecting member (hereinafter, abbreviated as a first connecting member) that constitutes the tip opening of the first sliding member 4. The first connecting member 4a is integrally fixed to the distal end of the first sliding member 4 by, for example, screwing or bonding. An interlocking opening / closing unit main body (hereinafter abbreviated as “unit main body”) 12 of the first opening / closing unit 10 constituting the interlocking opening / closing unit 2 is integrally fixed to the first connecting member 4a by an assembly screw 2m1, for example, a fastening member. It has come to be.

  On the other hand, a reference numeral 5 a is a second opening / closing unit connecting member (hereinafter, abbreviated as a second connecting member) that constitutes the tip opening of the second sliding member 5. The second connecting member 5a is integrally fixed to the tip of the second sliding member 5 by, for example, screwing or bonding. The second connecting member 5a is integrally fixed with a base end portion constituting frame 22 (described later) of the second opening / closing unit 20 constituting the interlocking opening / closing unit 2 by, for example, an assembly screw 2m2.

  The first opening / closing unit 10 constituting the interlocking opening / closing unit 2 includes a plurality of, for example, four first opening / closing unit sets 11 as opening / closing state switching means. On the other hand, the second opening / closing unit 20 constituting the interlocking opening / closing unit 2 includes a plurality of, for example, four second opening / closing unit sets 21 as the opening / closing state switching means.

As shown in the figure, the interlocking opening / closing unit 2 includes a first opening / closing part set 11 and a second opening / closing part set 21 arranged alternately in the circumferential direction.
In addition, the 1st opening-and-closing part group 11 and the 2nd opening-and-closing part group 21 which are shown in a figure are each a closed state (it describes also an initial state).

  Reference numeral 9 denotes a tip cover member. The distal end cover 9 includes an endoscope passage hole 9a that is a through-hole through which an endoscope insertion portion (see reference numeral 51 in FIG. 13), which will be described later, can pass. The tip cover 9 is attached to the first opening / closing unit 10 via, for example, a tip spring 9b which is an elastic member.

The distal end side end of the distal end spring 9b is integrally fixed around the endoscope passage hole 9a of the distal end cover 9 by welding, brazing such as solder, or adhesion. The coil inner diameter of the tip spring 9b is set so that the endoscope insertion portion 51 can pass through.
The proximal end of the distal spring 9b is integrally fixed to the unit body 12 by bonding, welding, or soldering around the distal opening of the inner hole 12a of the unit body 12. It has become.
The coil inner diameter of the tip spring 9b is larger than the inner diameter of the endoscope passage hole 9a.

  In the plurality of first opening / closing part sets 11 of the first opening / closing unit 10 and the plurality of second opening / closing part sets 21 of the second opening / closing unit 20, the relative positions of the base end component constituting frame 22 and the unit main body 12 change. Thus, for example, as shown in FIG. 3, a fully open state or the like in which all the opening / closing portions are expanded can be obtained. The base end configuration frame 22 fixed to the second opening / closing unit 20 is slidable with respect to the first opening / closing unit 10.

  As shown in FIG. 4, the interlocking opening / closing unit 2 is disassembled into a tip cover 9 to which a tip spring 9 b is integrally fixed, a first opening / closing unit 10, and a second opening / closing unit 20. Reference numeral 2f denotes a tip portion constituting frame.

  The front end configuration frame 2f is a first annular member, and is integrally fixed to a front end side of a second assembly main body 24 (to be described later) of the second opening / closing section group 21 constituting the second opening / closing unit 20, It is slidably disposed on a unit main body 12 constituting the opening / closing unit 10.

The structure of the interlocking opening / closing unit 2 will be described with reference to FIGS.
In the following description, the upper side in the figure is one side, the lower side in the figure is the other side, the left side in the figure is the distal side, and the right side in the figure is the proximal side.

As shown in FIG. 5, the first opening / closing unit 10 mainly includes, for example, four first opening / closing part sets 11 and a unit main body 12.
The unit main body 12 is an elongated tube member having an inner hole 12a that is a through hole. The outer shape of the unit main body 12 is a polygonal shape, and is set in consideration of the number of the first opening / closing part group 11 and the second opening / closing part group 21, and is an octagonal shape in the present embodiment. That is, the unit main body 12 has, for example, eight planes 12p arranged in the circumferential direction on the outer surface to serve as an arrangement portion for arranging the first opening / closing portion group 11 and the second opening / closing portion group 21. ing.

  On the other hand, the shape of the inner hole 12a which is an axial through hole of the unit main body 12 is circular, and the inner diameter is set so that the endoscope insertion portion 51 can be inserted.

  The front end cover 9 has the cover base end surface of the front end cover 9 brought close to the front end surface of the unit main body 12 by the urging force of the front end spring 9 b. The tip spring 9b is constituted by a tension coil spring having a predetermined distance in the tip direction against the urging force and an elastic deformation amount that moves.

  The cover base end surface of the front end cover 9 is formed to be close to the front end surface of the unit main body 12 and to abut on the front end surface of the front end component constituting frame 2f in the initial state.

  Of the eight planes 12p of the unit main body 12, four arrangement portions are first opening / closing section set fixing planes (hereinafter abbreviated as first planes) 12p1 for fixing the first opening / closing section set 11. The other four arrangement portions are a second opening / closing portion group placement plane (abbreviated as a second plane) 12p2 for placing the second opening / closing portion set 21. The first plane 12p1 and the second plane 12p2 are elongated planes in the axial direction, and are provided alternately with respect to the circumferential direction of the inner hole 12a.

  Each first opening / closing portion group 11 is integrally fixed to each first plane 12p1 of the unit body 12 by welding, brazing such as solder, or adhesion.

  In addition, the code | symbol 23 of FIG. 5 is an abutting member. As shown in FIG. 6, the abutting member 23 has a substantially rectangular parallelepiped shape, and sliding grooves 23 d are formed on both side portions on one surface side. A sliding protrusion 24ar is disposed in the sliding groove 23d. Further, the abutting member 23 is formed with a pin contact portion 23c. The abutting pin 37 is disposed in contact with the pin abutting portion 23c. Reference numeral 23p denotes a fixing surface, and the abutting member 23 is disposed by fixing the fixing surface 23p at a predetermined position on the second plane 12p2 of the unit main body 12, and then bonding, welding, soldering, or the like. It is designed to be fixed integrally. An abutting pin 37 to be described later contacts the abutting member 23.

The configuration of the first opening / closing part group 11 will be described with reference to FIG.
The first opening / closing section set 11 mainly includes a first opening / closing section assembly main body (hereinafter abbreviated as a first section assembly main body) 14, a first opening / closing link mechanism section 15, and a first opening / closing holding section 16. Configured. Reference numeral 17 denotes a link spring, reference numeral 18 denotes a holding portion spring, reference numeral 30 denotes a contact member, reference numerals 31 to 35 denote connection pins, and reference numeral 36 denotes a fixing screw.

  The link spring 17 is a tension coil spring provided with hook portions 17f at both ends, has a predetermined spring constant, and has an urging force for closing the first opening / closing link mechanism portion 15. The holding portion spring 18 is a compression coil spring, and has a predetermined spring constant.

  The abutting member 30 is a portion that abuts against a lumen wall or the like in the body, and is formed into a flat rectangular parallelepiped shape. When the endoscope insertion apparatus 1 is inserted into the body, the contact member 30 is made of metal or resin having biocompatibility. On the other hand, when the in-pipe insertion device 1 is a pipe such as gas or water, the contact member 30 is made of metal or resin having rigidity, or resin made of elasticity. Reference numeral 30a denotes a stepped hole through which the fixing screw 36 is inserted.

The first opening / closing link mechanism 15 will be described.
The first opening / closing link mechanism portion 15 is mainly composed of a first opening / closing member 15a, a first connecting rod member 15b, and a slider 15c.

  The first opening / closing member 15a is a first opening / closing part. The first opening / closing member 15a lies with respect to the unit main body 12 in a closed state in which the contact member 30 is disposed on the first assembly main body 14, and the first opening / closing member 15a rises with respect to the unit main body 12 so that the contact member 30 is first. It changes to the open state separated from the assembly body 14. The 1st opening-and-closing member 15a is an elongate plate-shaped member provided with the long hole 15a1 in the center part. The long hole 15a1 is a through hole that communicates the outside on one side and the outside on the other side. The length dimension and the width dimension of the long hole 15a1 are set to predetermined dimensions, and the width dimension is wider than the width dimension of the first connecting rod member 15b.

  Reference numeral 15ah1 denotes a first connecting pin fixing hole, which is a through hole through which the first connecting pin 31 is inserted, and is formed so as to face the long hole 15a1. The longitudinal axis of the first connecting pin fixing hole 15ah1 and the longitudinal axis of the first opening / closing member 15a are perpendicular to each other when viewed from above (hereinafter abbreviated as orthogonal relation). The first connection pin 31 that constitutes the rotation shaft and the holding portion is inserted and disposed in the first connection pin fixing hole 15ah1. The length dimension of the first connecting pin 31 is set to be substantially the same as the width dimension of the first opening / closing member 15a or a predetermined dimension and shorter than that.

  A notch surface 15a2 is formed on one surface side of the first opening / closing member 15a and on the tip side of the long hole 15a1. The notch surface 15a2 is a flat surface of a step for arranging the contact member 30, and a screw hole 15af into which the fixing screw 36 is screwed is formed at a predetermined position.

  On the other hand, a first engagement portion 15a3 having a first tooth portion 15ag having a plurality of teeth is formed on the proximal end side of the first opening / closing member 15a. The first tooth portion 15ag corresponds to a gear portion of a ratchet mechanism that is one of the locking mechanism portions. The first tooth portion 15ag is configured to be engaged with a first notch portion 16an of a first locking portion 16a1, which will be described later, provided in the first opening / closing holding portion 16 to obtain a locked state. The first tooth portion 15ag and the first notch portion 16an are first locking mechanism portions.

  On the other surface side of the first opening / closing member 15a, an installation surface 15a4 and a link convex portion 15a5 are provided. The installation surface 15 a 4 is a plane that is disposed on one surface of the first subassembly main body 14. Link convex part 15a5 is located in the opposite side of the 1st tooth part 15ag, and constitutes the 1st engaging part 15a3. The link convex part 15a5 is a convex part protruding in a predetermined dimension from the installation surface 15a4. A fourth connection pin insertion hole 15ah4 through which the fourth connection pin 34 is inserted is formed in the link convex portion 15a5. The longitudinal axis of the fourth connecting pin insertion hole 15ah4 and the longitudinal axis of the first opening / closing member 15a are orthogonal to each other.

  The first connecting rod member 15b is an elongated rod-shaped member. The distal end portion of the first connecting rod member 15b is configured to be rotatably connected to the slider 15c via the second connecting pin 32 constituting the rotating shaft. On the other hand, the base end portion of the first connecting rod member 15 b is configured to be rotatably connected to the first opening / closing member 15 a via the first connecting pin 31.

The first connecting rod member 15b has a second connecting pin insertion hole 15bh2 through which the second connecting pin 32 is inserted and arranged at the distal end, and the first connecting pin through which the first connecting pin 31 is inserted and arranged at the base end. It has an insertion hole 15bh1. The longitudinal axis of the second connecting pin insertion hole 15bh2 and the longitudinal axis of the first connecting rod member 15b are orthogonal to each other, and the longitudinal axis of the first connecting pin insertion hole 15bh1 and the longitudinal axis of the first connecting rod member 15b are orthogonal to each other. It is a relationship. On the base end side of the first connecting rod member 15b, a gap 15b1 is formed by cutting out from the center of the base end surface toward the front end direction. The gap 15 b 1 is a space for arranging the hook portion 17 f of the link spring 17, and the width of the gap 15 b 1 is larger than the line length of the spring 17.
The first connecting pin insertion hole 15bh1 is divided by a gap 15b1 formed on the base end side of the first connecting rod member 15b, and is opposed to the gap 15b1.

The slider 15c is a first sliding body, and includes a sliding portion 15c1, a pair of engaging projections 15c2, and a long hole 15c3.
The sliding portion 15c1 has a substantially rectangular parallelepiped shape, and is set to a preset width dimension, length dimension, and height dimension. The width dimension of the sliding part 15c1 is set to be approximately the same as or smaller than the width dimension of the first assembly body 14. The other surface of the sliding portion 15c1 is a sliding surface 15cp and is disposed on the first plane 12p1.

  The engaging protrusion 15c2 is a pair of convex portions provided to face the base end side portion of the sliding portion 15c1. The engaging protrusion 15c2 protrudes from the upper surface 15cu, which is one surface of the sliding portion 15c1, by a predetermined size. According to this configuration, the slider 15c is arranged with the pair of engaging protrusions 15c2 sandwiching the side surface of the first assembly main body 14. In this arrangement state, the slider 15 c is slidable along the first assembly body 14. Note that the distal end surface of the engaging protrusion 15c2 is configured as a surface with which the proximal end surface of the distal end portion constituting frame 2f abuts.

  The long hole 15c3 is formed in the sliding portion 15c1. The long hole 15c3 is a through hole that communicates the outside on one side of the sliding portion 15c1 with the outside on the other side. A distal end portion of the first connecting rod member 15b is disposed in the long hole 15c3. The length dimension and the width dimension of the long hole 15c3 are set to predetermined dimensions, and the width dimension is wider than the width dimension of the first connecting rod member 15b.

  Reference numeral 15ch2 is a second connecting pin fixing hole, which is a through-hole through which the second connecting pin 32 is inserted, and is formed so as to be opposed to the long hole 15c3. The longitudinal axis of the second connecting pin fixing hole 15ch2 and the longitudinal axis of the slider 15c are orthogonal to each other. The second connection pin 32 is inserted and arranged in the second connection pin fixing hole 15ch2. The length dimension of the second connecting pin 32 is set to be substantially the same as the width dimension of the sliding portion 15c1 or shorter than that by a predetermined dimension.

The first opening / closing holding part 16 includes a holding part main body 16a, a pair of blade members 16b, and a convex part 16c.
The holding part main body 16a is formed in a preset shape, and the width dimension is substantially the same as the width dimension of the first opening / closing member 15a. The holding portion main body 16a includes a first locking portion 16a1 formed of an inclined surface having a first notch portion 16an at the distal end surface. The first notch portion 16an corresponds to a latching claw of a ratchet mechanism, and teeth portions that mesh with the first tooth portions 15ag of the first opening / closing member 15a are arranged.
A bottomed hole 16ah having an opening on the other surface is formed on the other surface side of the holding portion main body 16a. The hole 16ah is a hole in which one end of the holding portion spring 18 is disposed, and the depth dimension is set to a predetermined dimension.

  The blade member 16b is a locking state release member that protrudes from both side surfaces 16as on the base end side of the holding portion main body 16a. For example, the base end side of the blade member 16b is configured to protrude from the base end surface of the holding portion main body 16a. The blade member 16b is formed in a wedge shape and includes a first contact surface 16b1, a second contact surface 16b2, and an inclined surface 16b3. The inclined surface 16b3 is formed to be inclined at a preset angle on one surface side of the blade member 16b, and the first contact surface 16b1 and the second contact surface 16b2 are set at an angle set in advance on the other surface side of the blade member 16b. It is formed as an inclined surface.

The blade member 16b protrudes from the side surface 16as of the holding portion main body 16a by a predetermined size.
The convex part 16c protrudes in a predetermined dimension from the other surface of the holding part main body 16a. A fifth connection pin insertion hole 16ch5 through which the fifth connection pin 35 is inserted is formed in the convex portion 16c. The longitudinal axis of the fifth connecting pin insertion hole 16ch5 and the longitudinal axis of the holding portion main body 16a are orthogonal to each other.

  The first assembly main body 14 is an elongated plate-like member. The other surface of the first subassembly body 14 is a fixed surface 14a that is installed and fixed on the first plane 12p1. The width dimension of the first subassembly main body 14 is set to a predetermined dimension based on the width dimension of the first plane 12p1.

The first assembly body 14 includes a notch groove 14b, a first elongated hole 14c, a second elongated hole 14d, a spring hole 14e, a notched portion 14f, and a plurality of connecting pin fixing holes 14h3, 14h4, 14h5. .
The notch groove 14b has an opening on the fixed surface 14a side. The notch groove 14b is formed with a preset width dimension and a depth dimension from a position that is preset from the distal end surface of the first subassembly main body 14 and away from the front end face. A sliding portion 15c1 of the slider 15c is slidably disposed in the notch groove 14b. Therefore, the depth dimension of the notch groove 14b is set in advance larger than the thickness dimension of the sliding portion 15c1.

  The first long hole 14c includes a first communication hole 14c1 and a second communication hole 14c2. The first communication hole 14c1 communicates with the bottom surface of the cutout groove 14b and the outside on the one surface side. The second communication hole 14c2 communicates the outside on the fixed surface 14a side and the outside on the one surface side.

  A first connecting rod member 15b is disposed in the first communication hole 14c1. On the other hand, the second communication hole 14c2 forms a hook arrangement space in which the hook portion 17f formed at the base end portion of the link spring 17 is arranged. The width of the first long hole 14 c is set to be a predetermined size and a width wider than the width of the first connecting rod member 15 b and the outer shape of the link spring 17.

  In the present embodiment, the sliding portion 15c1, the first connecting rod member 15b, and the link spring 17 of the slider 15c are accommodated in a predetermined state in the notch groove 14b including the first long hole 14c. It is configured.

  The second long hole 14d is provided adjacent to the first long hole 14c, and is set to a predetermined length dimension. The second long hole 14d is a communication hole that communicates the outside on the fixed surface 14a side and the outside on the one surface side.

  A first engagement portion 15a3 of the first opening / closing member 15a and a convex portion 16c of the first opening / closing holding portion 16 are arranged in the second long hole 14d. The width of the second long hole 14d is set wider than the width of the first engaging portion 15a3 and the outer dimension of the convex portion 16c.

  The third connection pin fixing hole 14h3 is a through-hole through which the third connection pin 33 is inserted, and is formed to face the second communication hole 14c2. The longitudinal axis of the third connecting pin fixing hole 14h3 and the longitudinal axis of the first subassembly main body 14 are orthogonal to each other.

  The fourth connecting pin fixing hole 14h4 is a through hole through which the fourth connecting pin 34 is inserted, and the fifth connecting pin fixing hole 14h5 is a through hole through which the fifth connecting pin 35 is inserted. The fourth connecting pin fixing hole 14h4 and the fifth connecting pin fixing hole 14h5 are formed to face each other with the second long hole 14d interposed therebetween. The longitudinal axis of the fourth connecting pin fixing hole 14h4 and the longitudinal axis of the fifth connecting pin fixing hole 14h5 are formed at a predetermined interval. The longitudinal axis of the fourth connection pin fixing hole 14h4 and the longitudinal axis of the first part body 14 are orthogonal to each other. The longitudinal axis of the fifth connection pin fixing hole 14h5 and the longitudinal axis of the first part body 14 Is an orthogonal relationship.

The spring hole 14e is a hole in which the other end of the holding part spring 18 is disposed, and the depth dimension is set to a predetermined dimension.
The cutout portion 14 f constitutes an escape portion that prevents one surface of the first connecting member 4 a from protruding from one surface of the first assembly body 14. Reference numeral 14fh denotes a screw insertion hole through which the screw portion of the first assembly screw 2m1 is inserted.

The assembly of the first opening / closing part set 11 will be described.
The first opening / closing part assembly 11 is assembled through the first opening / closing part assembly process. The first opening / closing part assembly process includes an abutting member assembly process, a link member base end assembly process, a link member tip end assembly process, a link spring assembly process, an open / close member base end assembly process, And an opening / closing holding part assembling step. The order of assembling the first opening / closing part group 11 is appropriately set according to the process chart.

Hereinafter, each assembly process will be described.
First, the contact member assembling process will be described. The contact member assembling step is a step of assembling the contact member 30 to the first opening / closing member 15a.
In this step, the worker arranges the contact member 30 at a predetermined position on the cutout surface 15a2 of the first opening / closing member 15a as indicated by an arrow Y6a.
Thereafter, the operator screws the fixing screw 36 into the screw hole 15af through the stepped hole 30a as indicated by an arrow Y6b.
As a result, the contact member 30 is integrally fixed at a predetermined position of the first opening / closing member 15a.

Next, the link member base end assembly process will be described. The link member base end portion assembly step is a step in which the base end portion of the first connecting rod member 15b is rotatably assembled to the first opening / closing member 15a.
In this step, the worker previously arranges a hook portion 17f formed at the tip of the link spring 17 as indicated by an arrow Y6c in the gap 15b1 of the first connecting rod member 15b.
Thereafter, the worker arranges the proximal end portion of the first connecting rod member 15b in which the hook portion 17f is disposed in the gap 15b1 in the elongated hole 15a1 as indicated by the arrow Y6d.

In this arrangement state, the operator connects the first connecting pin 31 to the first connecting pin fixing hole 15ah1 of the first opening / closing member 15a, the first connecting pin insertion hole 15bh1 of the first connecting rod member 15b, as shown by the arrow Y6e, and the link. The hook portion 17f of the spring 17 for use, the first connecting pin insertion hole 15bh1, and the first connecting pin fixing hole 15ah1 are inserted in this order.
After inserting the first connecting pin, the operator applies an adhesive to each first connecting pin fixing hole 15ah1 of the first opening / closing member 15a, or each end of the first connecting pin 31 by means such as welding. Are integrally fixed to the first opening / closing member 15a.

  Thus, the base end portion of the first connecting rod member 15b is attached to the first opening / closing member 15a so as to be rotatable around the first connecting pin 31 provided in the elongated hole 15a1 of the first opening / closing member 15a. . The hook portion 17 f of the link spring 17 is hooked on the first connecting pin 31.

  In the above-described process, the hook portion 17f of the link spring 17 is arranged in advance in the gap 15b1 of the first connecting rod member 15b. However, the operator inserts the first connecting pin 31 into the first connecting pin insertion hole 15bh1 of the first connecting rod member 15b and the first connecting pin fixing hole 15ah1 of the first opening / closing member 15a, and the first connecting pin 31 is inserted. After the respective end portions are fixed integrally to the first opening / closing member 15a, the hook portion 17f of the link spring 17 may be hooked on the first connecting pin 31 via the gap 15b1.

Next, the link member tip part assembly step will be described. The link member tip portion assembly step is a step of rotatably assembling the tip portion of the first connecting rod member 15b to the slider 15c.
When the operator starts the link member distal end portion assembly step after the link member proximal end assembly step, the distal end portion of the first connecting rod member 15b indicates the communication hole of the first assembly main body 14 as indicated by an arrow Y6f. 14c1 is allowed to pass through and is disposed in the long hole 15c3 of the slider 15c.
In addition, when performing a link member front-end | tip part assembly process before a link member base end part assembly | attachment process, the front-end | tip part of the 1st connecting rod member 15b is arrange | positioned in the long hole 15c3 of the slider 15c.

After the tip of the first connecting rod member 15b is disposed in the long hole 15c3, the operator connects the second connecting pin 32 to the second connecting pin fixing hole 15ch2 of the slider 15c as shown by the arrow Y6g, the first connecting rod. The second connection pin insertion hole 15bh2 and the second connection pin fixing hole 15ch2 of the member 15b are inserted in this order.
After inserting the second connecting pin, the operator applies an adhesive to each second connecting pin fixing hole 15ch2 of the slider 15c or attaches each end of the second connecting pin 32 to the slider 15c by means such as welding. To be fixed to the unit.
Thus, the tip of the first connecting rod member 15b is attached to the slider 15c so as to be rotatable about the second connecting pin 32 provided in the elongated hole 15c3 of the slider 15c.

  In addition, when performing a link member base end part assembly | attachment process after a link member front-end | tip part assembly | attachment process, an operator sets the base end part of the 1st connection rod member 15b to the 1st subassembly main body in the direction opposite to arrow Y6f. After passing through the 14 first communication holes 14c1, the first opening / closing member 15a is disposed in the elongated hole 15a1.

Next, the link spring assembly process will be described. The link spring assembly step is a step of assembling the hook portion 17 f on the proximal end side of the link spring 17 to the first partial assembly body 14.
The worker arranges the hook portion 17f on the proximal end side of the link spring 17 in the second communication hole 14c2 as indicated by an arrow Y6h.

In this arrangement state, the operator inserts the third connection pin 33 in the order of the third connection pin fixing hole 14h3, the hook portion 17f, and the third connection pin fixing hole 14h3 of the first assembly body 14 as indicated by the arrow Y6k. .
After inserting the third connection pin, the operator applies an adhesive to each third connection pin fixing hole 14h3 of the first assembly body 14, or welds or other means to each end of the third connection pin 33. The unit is integrally fixed to the first subassembly main body 14.
As a result, the hook portion 17 f formed at the base end portion of the link spring 17 is hooked on the third connecting pin 33.

  In the above-described process, the hook portion 17f of the link spring 17 is arranged in advance in the second communication hole 14c2. However, after the operator integrally fixes each end of the third connection pin 33 inserted into the third connection pin fixing hole 14h3 of the first assembly body 14 to the third connection pin fixing hole 14h3, The hook portion 17f of the link spring 17 may be hooked on the third connecting pin 33 via the second communication hole 14c2.

Next, the opening / closing member base end assembly process will be described. The opening / closing member base end assembly step is a step in which the first engaging portion 15a3 of the first opening / closing member 15a is rotatably assembled to the first assembly body 14.
An operator arrange | positions the 1st engaging part 15a3 in the front end side in 14d of 2nd long holes, as shown by arrow Y6m.

In this arrangement state, the operator places the fourth connecting pin 34 in the fourth connecting pin fixing hole 14h4 of the first assembly body 14, the fourth connecting pin insertion hole 15ah4 of the first opening / closing member 15a, as shown by the arrow Y6n, The four connecting pin fixing holes 14h4 are inserted in this order.
After inserting the fourth connecting pin, the operator applies an adhesive to each of the fourth connecting pin fixing holes 14h4 of the first assembly body 14, or welds or other means to each end of the fourth connecting pin 34. The unit is integrally fixed to the first subassembly main body 14.
Thus, the first opening / closing member 15a is attached to the first subassembly main body 14 so as to be rotatable around the fourth connecting pin 34.

  The opening / closing member base end assembly step is performed after completion of the above-described contact member assembly step, link member base end assembly step, link member tip end assembly step, and link spring assembly step, or It can be performed after completion of the contact member assembly process and the link member base end assembly process performed after completion of the contact member assembly process.

Finally, the opening / closing holding part assembling step will be described. The opening / closing holding portion assembly step is a step in which the convex portion 16c of the first opening / closing holding portion 16 is rotatably attached to the first assembly body 14.
When the operator arranges the convex portion 16c of the first opening / closing holding portion 16 on the proximal end side in the second long hole 14d as indicated by the arrow Y6p, the operator previously holds the holding portion spring 18 as indicated by the arrow Y6r. The other end is disposed in the spring hole 14e.
In a state where the end of the holding spring 18 is disposed in the spring hole 14e, the operator arranges the convex portion 16c on the proximal end side in the second long hole 14d as indicated by an arrow Y6p. At this time, the operator places one end of the holding portion spring 18 in the hole 16ah of the first opening / closing holding portion 16.

Here, the operator arranges the convex portion 16c on the proximal end side in the second long hole 14d against the urging force of the holding spring 18, and the first notch portion 16an of the first locking portion 16a1. The first engagement portion 15a3 is engaged with the first tooth portion 15ag in a predetermined engagement state.
Thereafter, the operator connects the fifth connecting pin 35 to the fifth connecting pin fixing hole 14h5 of the first assembly body 14, the fifth connecting pin insertion hole 16ch5 of the first opening / closing holding portion 16, as shown by the arrow Y6s. The five connecting pin fixing holes 14h5 are inserted in this order.
After inserting the fifth connecting pin, the operator applies an adhesive to each fifth connecting pin fixing hole 14h5 of the first assembly body 14, or welds or other means to each end of the fifth connecting pin 35. The unit is integrally fixed to the first subassembly main body 14.

  Thus, the first opening / closing holding portion 16 is attached to the first subassembly main body 14 so as to be rotatable around the fifth connecting pin 35. In this attached state, since the holding spring 18 is positioned on the proximal side from the convex portion 16c, the first locking portion 16a1 is pressed toward the first engaging portion 15a3 by the urging force of the holding spring 18. Thus, the first notch portion 16an is engaged with the first tooth portion 15ag.

  In the present embodiment, the shape of the first notch portion 16an and the first tooth portion 15ag is such that, in the engaged state, the first opening / closing member 15a is centered on the fourth connecting pin 34 from the upper direction in the drawing to the left direction. The first opening / closing member 15a is shaped to be able to rotate further in the clockwise direction and prevent it from rising while preventing the counterclockwise rotation and maintaining the open state.

  Moreover, in the above, the case where the opening / closing holding | maintenance part assembly | attachment process is performed after the opening / closing member base end part assembly | attachment process is demonstrated. However, you may make it perform an opening-and-closing holding part assembly | attachment process before an opening-and-closing member base end part assembly | attachment process. In this case, the operation of locking the first tooth portion 15ag of the first engagement portion 15a3 in a predetermined state with respect to the first notch portion 16an of the first locking portion 16a1 is performed in the opening / closing member base end portion assembly step. Done.

The first opening / closing section assembly 11 assembled through the above-described opening / closing section assembly process is fixed to each first plane 12p1 provided in the unit body 12, as shown in FIG. Thus, the first opening / closing unit 10 shown in FIG. 4 is configured.
The abutting member 23 is integrally fixed by applying an adhesive at a predetermined position on the second plane 12p2 of the unit main body 12, or by welding or soldering.

  When the first opening / closing member 15a of the first opening / closing portion group 11 constituting the first opening / closing unit 10 is closed, the tip surface of the sliding portion 15c1 of the slider 15c is close to the rising surface on the tip side of the notch groove 14b. Arranged. When the first opening / closing member 15a is in a closed state, the first connecting rod member 15b and the link spring 17 are accommodated so as to lie in a space formed by the first long hole 14c and the notch groove 14b. .

The first opening / closing member 15a is configured to gradually change to an open state as the slider 15c moves toward the proximal end. Specifically, when the slider 15c moves from the position indicated by the solid line in FIG. 8 along the first assembly body 14 in the proximal direction, the distal end portion of the first connecting rod member 15b is moved to the second connecting pin 32. while being rotated about the proximal end portion of the first connecting rod member 15b is rotated about the first connecting pin 3 1.

  As a result, as the slider 15c moves toward the proximal end, the first connecting rod member 15b accommodated in the space formed by the first long hole 14c and the notch groove 14b is gradually raised. Further, as the first connecting rod member 15b rises, the first opening / closing member 15a moves to the left in the figure as shown by the arrow Y7 with the fourth connecting pin 34 as the center against the urging force of the link spring 17. Rotate in a clockwise direction that is upward from the stand. As the first opening / closing member 15a rotates, the engagement state between the first tooth portion 15ag and the first notch portion 16an changes for each tooth. As the engagement state changes in this manner, the first opening / closing member 15a is gradually switched from the closed state to the open state, and held in the switched state.

  The first opening / closing member 15a is in the maximum open state when the base end surface of the sliding portion 15c1 comes into contact with the base end side rising surface of the notch groove 14b. When the first opening / closing member 15a is in the maximum open state or in a state where the sliding portion 15c1 is located in the middle of the notch groove 14b, the first notch portion 16an is engaged with the first tooth portion 15ag. This restricts the first opening / closing member 15a from rotating counterclockwise. For this reason, the open state corresponding to the moving distance of the slider 15c is maintained.

  When the engagement state between the first tooth portion 15ag and the first notch portion 16an is released against the biasing force of the holding spring 18, the first opening / closing member 15a is moved by the biasing force of the link spring 17. The slider 15c is moved to the tip side to return to the closed state.

As shown in FIG. 9, the second opening / closing unit 20 mainly includes, for example, four second opening / closing part sets 21 and a base end part constituting frame 22.
The base end component frame 22 is a second annular member. The shape of the inner hole 22a of the base end component constituting frame 22 is set in consideration of the outer shape of the unit body 12 to which the first opening / closing portion group 11 is fixed, and is an octagonal shape in the present embodiment. Further, the outer shape of the base end component frame 22 is also a polygonal shape, and is an octagonal shape in this embodiment.

  The base end component frame 22 has fixed surfaces 22p1 and fastening surfaces 22p2 alternately on the outer surface. The fixing surface 22p1 is a flat surface for fixing the second opening / closing part set 21 integrally. The fastening surface 22p2 is a plane provided with a screw hole 22pf into which a screw portion of the assembly screw 2m2 is screwed at a predetermined position. In the present embodiment, four fixing surfaces 22p1 and four fastening surfaces 22p2 are provided.

The inner surface of the inner hole 22a of the base end configuration frame 22 is configured to have first sliding surfaces 22a1 and second sliding surfaces 22a2 alternately.
The first sliding surface 22a1 constitutes the back surface of the fastening surface 22p2. The first sliding surface 22a1 is configured to be slidably disposed on one surface of the first assembly body 14 of the first opening / closing section assembly 11 fixed to the first plane 12p1 of the unit body 12. Yes.
The second sliding surface 22a2 constitutes the back surface of the fixed surface 22p1.

  The fastening surface 22p2 is configured to protrude outward from the outer surface so as to obtain a predetermined number of threads. For this reason, the thickness of the fastening surface 22p2 is thicker than the thickness of the fixed surface 22p1.

The configuration of the second opening / closing part group 21 will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same member as the 1st opening-and-closing part group 11, and description is abbreviate | omitted.
The second opening / closing section group 21 includes a second opening / closing section assembly body (hereinafter abbreviated as a second section body) 24, a second opening / closing link mechanism section 25, a second opening / closing holding section 26, and a link spring 17. , Holding portion spring 18, contact member 30, connecting pins 31, 33, 34, 35, fixing screw 36, and abutting pin 37.

In the second opening / closing part group 21, the second opening / closing link mechanism part 25 is mainly composed of a second opening / closing member 25 a, a second connecting rod member 25 b, and an abutting pin 37.
The second opening / closing member 25a of the second opening / closing link mechanism unit 25 and the first opening / closing member 15a of the first opening / closing link mechanism unit 15 constituting the second opening / closing unit set 21 are the same member. The second connecting rod member 25b of the second opening / closing link mechanism portion 25 and the first connecting rod member 15b of the first opening / closing link mechanism portion 15 are the same member. Further, the second opening / closing holder 26 and the first opening / closing holder 16 are the same member.
As described above, in the interlocking opening / closing unit 2 of the present embodiment, the number of parts is reduced by sharing parts.

  The second opening / closing member 25a and the first opening / closing member 15a described above are the same member, but in order to distinguish between the opening / closing member for the second opening / closing portion set 21 and the opening / closing member for the first opening / closing portion set 11. The second opening / closing member for the second opening / closing part group 21 is denoted by reference numeral 25a so as to be distinguishable from the first opening / closing member 15a. Similarly, the reference numeral 25b is assigned to the second link member so that it can be distinguished from the first connecting rod member 15b, and the reference numeral 26 is assigned to the second opening / closing holder so that it can be distinguished from the first opening / closing holder 16. Yes.

  The second opening / closing member 25a is a second opening / closing part. The second opening / closing member 25a lies down with respect to the second assembly body 24 and is in a closed state in which the contact member 30 is disposed on the second assembly body 24, and rises against the second assembly body 24. The contact member 30 changes to an open state separated from the second assembly main body 24. The second opening / closing member 25a has the same configuration as that of the first opening / closing member 15a. The second opening / closing member 25a includes a long hole 25a1, a first connecting pin fixing hole 25ah1, a notch surface 25a2, a screw hole 25af, and a second tooth provided with a plurality of teeth. The second engaging portion 25a3 in which the second tooth portions 25ag constituting the locking mechanism portion are arranged, an installation surface 25a4, a link convex portion 25a5, and a fourth connecting pin insertion hole 25ah4 are provided.

  On the other hand, unlike the first connecting rod member 15b, the second connecting rod member 25b includes a pin fixing hole 25bh2, a first connecting pin insertion hole 25bh1, and a gap 25b1.

  The abutting pin 37 is a second sliding body and is fixed to the pin fixing hole 25bh2. The length dimension of the abutting pin 37 is set such that both end portions thereof protrude from the side surface of the second connecting rod member 25b by a predetermined length.

  The second opening / closing holding part 26 has the same configuration as the first opening / closing holding part 16 and includes a holding part main body 26a, a pair of blade members 26b, and a convex part 26c. The holding portion main body 26a includes a second locking portion 26a1 having a second notch portion 26an that constitutes a second locking mechanism portion, a bottomed hole 26ah, and a blade member 26b provided on both side surfaces 26as. ing.

The blade member 26b is a locking state release member that protrudes from both side surfaces 26as on the base end side of the holding portion main body 26a. The blade member 26 b is disposed so as to be in a positional relationship in contact with the blade member 16 b of the first subassembly main body 14 fixed to the unit main body 12.
A fifth connecting pin insertion hole 26ch5 is formed in the convex portion 26c.

  Unlike the first assembly body 14, the second assembly body 24 is a crank-shaped prismatic member, and includes a distal end portion 24 a 1, a bent portion 24 a 2, and a proximal end portion 24 a 3. The width dimension of the second assembly body 24 is set to a predetermined dimension based on the width dimension of the second plane 12p2.

  The second assembly body 24 includes a first cutout portion 24ap, a first long hole 24c, a second long hole 24d, a spring hole 24e, a second cutout portion 24f, and a plurality of connecting pin fixing holes 24h3, 24h4, 24h5. It is equipped with.

  The front end portion on one surface side of the front end portion 24a1 is configured as a front end joint surface 24b. The other surface of the tip portion 24a1 is a sliding surface that is slidably disposed on the second plane 12p2. A front end side notch portion 24ap (hereinafter referred to as a first notch portion) that forms a space in which the abutting pin 37 is disposed is formed on the front end side of the sliding surface of the front end portion 24a1.

  The length dimension of the first notch 24ap is set in consideration of the moving distance of the butting pin 37. On the other hand, the depth dimension of the first notch 24ap is set in consideration of the thickness dimension of the second connecting rod member 25b and the position of the abutting pin 37. Reference numeral 24ae denotes a rising surface, which is a surface against which the butting pin 37 abuts.

  An axial groove 24ad is formed in the first notch 24ap. The axial groove 24ad is formed in an elongated shape at the center of the other surface of the first notch 24ap, and constitutes a sliding protrusion 24ar projecting on both sides of the first notch 24ap. The axial groove 24ad is a groove extending from the tip of the second assembly body 24 to the second long hole 24d.

  The first long hole 24c includes a first communication hole 24c1 and a second communication hole 24c2. The first communication hole 24c1 communicates with the first cutout portion 24ap and the outside on the one surface side. The second communication hole 24c2 communicates the outside on the sliding surface side and the outside on the one surface side.

  A second connecting rod member 25b is disposed in the first communication hole 24c1. In contrast, the second communication hole 24c2 forms a hook arrangement space in which the hook portion 17f formed at the base end portion of the link spring 17 is arranged. The width of the first elongated hole 24c is set to be a predetermined size and a wider width than the width of the second connecting rod member 25b and the outer shape of the link spring 17.

  In the present embodiment, the second connecting rod member 25b and the link spring 17 to which the abutment pin 37 is fixed are accommodated in a predetermined state in the first long hole 24c and the first notch 24ap. It is configured.

  The second long hole 24d is provided adjacent to the first long hole 24c, and is set to a predetermined length dimension. The second long hole 24d is a communication hole that communicates the outside on the sliding surface side with the outside on the one surface side.

  A second engaging portion 25a3 of the second opening / closing member 25a and a convex portion 26c of the first opening / closing holding portion 26 are arranged in the second long hole 24d. The width dimension of the second long hole 24d is set wider than the width dimension of the second engagement portion 25a3 and the outer dimension of the convex portion 26c.

  The third connection pin fixing hole 24h3 is a through-hole through which the third connection pin 33 is inserted, and is formed so as to face the second communication hole 24c2. The longitudinal axis of the third connecting pin fixing hole 24h3 and the longitudinal axis of the second assembly main body 24 are orthogonal to each other.

  The fourth connecting pin fixing hole 24h4 is a through hole through which the fourth connecting pin 34 is inserted, and the fifth connecting pin fixing hole 24h5 is a through hole through which the fifth connecting pin 35 is inserted. The fourth connecting pin fixing hole 24h4 and the fifth connecting pin fixing hole 24h5 are formed to face each other with the second long hole 24d interposed therebetween. The longitudinal axis of the fourth connecting pin fixing hole 24h4 and the longitudinal axis of the fifth connecting pin fixing hole 24h5 are formed at a predetermined interval. The longitudinal axis of the fourth connecting pin fixing hole 24h4 and the longitudinal axis of the second assembly body 24 are orthogonal to each other, and the longitudinal axis of the fifth connection pin fixing hole 24h5 and the longitudinal axis of the second assembly body 24 are Is an orthogonal relationship.

The spring hole 24e is a hole in which the other end of the holding portion spring 18 is disposed, and the depth dimension is set to a predetermined dimension.
The second notch 24 f has a joint surface disposed on the fixed surface 22 p 1 of the base end component frame 22. The second assembly body 24 is configured to be integrally fixed to the base end component frame 22 by joining the joining surface of the second notch portion 24f to the fixed surface 22p1, for example, by welding.

The assembly of the second opening / closing part group 21 will be described.
The 2nd opening-and-closing part group 21 is assembled through a 2nd opening-and-closing part assembly | attachment process. The second opening / closing part assembly process includes the contact member assembly process, link member base end assembly process, link spring assembly process, and opening / closing member base end assembly described in the first opening / closing part assembly process. A process, an opening / closing holding part assembly process, and a link member tip part assembly process, which is an assembly process unique to the second opening / closing part assembly 21.

Hereinafter, each assembly process will be described.
The contact member assembly step is a step of assembling the contact member 30 to the second opening / closing member 25a.
In this step, the operator places the contact member 30 at a predetermined position on the cut-out surface 25a2 of the second opening / closing member 25a as indicated by an arrow Y9a.
Thereafter, the operator screws the fixing screw 36 into the screw hole 25af through the stepped hole 30a as indicated by an arrow Y9b.
As a result, the contact member 30 is integrally fixed at a predetermined position of the second opening / closing member 25a.

The link member base end portion assembly step is a step in which the base end portion of the second connecting rod member 25b is rotatably assembled to the second opening / closing member 25a.
In this step, the worker arranges in advance a hook portion 17f formed at the tip of the link spring 17 as indicated by an arrow Y9c in the gap 25b1 of the second connecting rod member 25b.
Thereafter, the worker arranges the proximal end portion of the second connecting rod member 25b in which the hook portion 17f is disposed in the gap 25b1 in the elongated hole 25a1 as indicated by the arrow Y9d.

  In this arrangement state, the operator places the first connecting pin 31 as shown by the arrow Y9e, the first connecting pin fixing hole 25ah1 of the second opening / closing member 25a, the first connecting pin insertion hole 25bh1 of the second connecting rod member 25b, and the link. The hook portion 17f of the spring 17 for use, the first connecting pin insertion hole 25bh1, and the first connecting pin fixing hole 25ah1 are inserted in this order.

After inserting the first connecting pin, the operator applies an adhesive to each first connecting pin fixing hole 25ah1 of the second opening / closing member 25a, or each end of the first connecting pin 31 by means such as welding. Is integrally fixed to the second opening / closing member 25a.
Thus, the base end portion of the second connecting rod member 25b is attached to the second opening / closing member 25a so as to be rotatable around the first connecting pin 31 provided in the elongated hole 25a1 of the second opening / closing member 25a. . The hook portion 17 f of the link spring 17 is hooked on the first connecting pin 31.

  In the above-described process, the hook portion 17f of the link spring 17 is previously disposed in the gap 25b1 of the second connecting rod member 25b. However, the operator inserts the first connecting pin 31 into the first connecting pin insertion hole 25bh1 of the second connecting rod member 25b and the first connecting pin fixing hole 25ah1 of the second opening / closing member 25a, and the first connecting pin 31 is inserted. After the respective end portions are integrally fixed to the second opening / closing member 25a, the hook portion 17f of the link spring 17 may be hooked on the first connecting pin 31 via the gap 25b1.

Next, the link member tip part assembly step will be described. The link member tip portion assembly step is a step of assembling the abutting pin 37 to the tip portion of the second connecting rod member 25b.
When the operator starts the link member tip end assembly step after the link member base end assembly step, the first end of the second assembly main body 24 is indicated by the arrow Y9f at the tip end of the second connecting rod member 25b. The leading end portion of the second connecting rod member 25b is disposed on the first cutout portion 24ap side through the communication hole 24c1.

  After the tip of the second connecting rod member 25b is disposed on the first cutout portion 24ap side, the operator inserts the butting pin 37 into the pin fixing hole 25bh2 of the second connecting rod member 25b as indicated by the arrow Y9g. To do. At this time, both end portions of the abutting pin 37 are projected from the side surface of the second connecting rod member 25b substantially evenly.

After inserting the abutting pin, the operator applies the adhesive to the pin fixing hole 25bh2 or fixes the abutting pin 37 to the second connecting rod member 25b by means such as welding.
As a result, the abutment pin 37 fixed to the distal end portion of the second connecting rod member 25b is disposed on the first notch portion 24ap side, and the distal end portion of the second connecting rod member 25b is notched to the first notch portion. It is slidably disposed at a predetermined position on the part 24ap side.

  In addition, when performing a link member base end part assembly | attachment process after a link member front-end | tip part assembly | attachment process, an operator sets the base end part of the 2nd connecting rod member 25b in the direction opposite to arrow Y9f in the 2nd subassembly main body. The 24 first communication holes 24c1 are allowed to pass through, and then disposed in the long holes 25a1 of the second opening / closing member 25a.

The link spring assembly step is a step of assembling the hook portion 17 f on the base end side of the link spring 17 to the second assembly body 24.
The worker arranges the hook portion 17f on the proximal end side of the link spring 17 in the second communication hole 24c2 as indicated by an arrow Y9h.

In this arrangement state, the operator inserts the third connecting pin 33 in the order of the third connecting pin fixing hole 24h3, the hook portion 17f, and the third connecting pin fixing hole 24h3 of the second assembly body 24 as indicated by an arrow Y9k. .
After inserting the third connecting pin, the operator applies an adhesive to each third connecting pin fixing hole 24h3 of the second assembly body 24, or welds or other means to each end of the third connecting pin 33. The part is fixed to the second assembly main body 24 integrally.
As a result, the hook portion 17 f formed at the base end portion of the link spring 17 is hooked on the third connecting pin 33.

  In the above-described process, the hook portion 17f of the link spring 17 is arranged in advance in the second insertion hole 24c2. However, after the operator integrally fixes each end of the third connection pin 33 inserted into the third connection pin fixing hole 24h3 of the second assembly body 24 to the third connection pin fixing hole 24h3, You may make it hook the hook part 17f of the spring 17 for a link on the 3rd connection pin 33 via the 2nd communicating hole 24c2.

Next, the opening / closing member base end portion assembly step is a step in which the link convex portion 25a5 of the second opening / closing member 25a is rotatably assembled to the second assembly body 24.
An operator arrange | positions the 2nd engaging part 25a3 in the front end side in the 2nd long hole 24d, as shown by arrow Y9m.

In this arrangement state, the operator places the fourth connection pin 34 on the fourth connection pin fixing hole 24h4 of the second assembly body 24, the fourth connection pin insertion hole 25ah4 of the second opening / closing member 25a, as shown by the arrow Y9n, The four connecting pin fixing holes 24h4 are inserted in this order.
After inserting the fourth connection pin, the operator applies an adhesive to each fourth connection pin fixing hole 24h4 of the second assembly body 24, or welds or other means to each end of the fourth connection pin 34. The part is fixed to the second assembly main body 24 integrally.
Thus, the second opening / closing member 25a is attached to the second assembly body 24 so as to be rotatable about the fourth connecting pin 34.

  The opening / closing member base end assembly step is performed after completion of the above-described contact member assembly step, link member base end assembly step, link member tip end assembly step, and link spring assembly step, or It can be performed after completion of the contact member assembly process and the link member base end assembly process performed after completion of the contact member assembly process.

The opening / closing holding portion assembly step is a step in which the convex portion 26c of the second opening / closing holding portion 26 is rotatably attached to the second assembly body 24.
When the operator arranges the convex portion 26c of the first opening / closing holding portion 26 on the proximal end side in the second long hole 24d as indicated by the arrow Y9p, the worker previously holds the holding portion spring 18 as indicated by the arrow Y9r. The other end is disposed in the spring hole 24e.
With the end portion of the holding portion spring 18 disposed in the spring hole 24e, the operator arranges the convex portion 26c on the proximal end side in the second long hole 24d as indicated by the arrow Y9p. At this time, the operator places one end portion of the holding portion spring 18 in the hole 26ah of the second opening / closing holding portion 26.

Here, the operator arranges the convex portion 26c on the proximal end side in the second long hole 24d against the urging force of the holding spring 18, and the second notch portion 26an of the second locking portion 26a1. The second engagement portion 25a3 is engaged with the second tooth portion 25ag in a predetermined engagement state.
Thereafter, the operator connects the fifth connecting pin 35 to the fifth connecting pin fixing hole 24h5 of the second assembly body 24, the fifth connecting pin insertion hole 26ch5 of the second opening / closing holding portion 26, as shown by the arrow Y9s. The five connecting pin fixing holes 24h5 are inserted in this order.
After inserting the fifth connecting pin, the operator applies an adhesive to each fifth connecting pin fixing hole 24h5 of the second assembly body 24 or welds or other means to each end of the fifth connecting pin 35. The part is fixed to the second assembly main body 24 integrally.
As a result, the second opening / closing holder 26 is attached to the second assembly body 24 so as to be rotatable about the fifth connecting pin 35. In this attached state, since the holding spring 18 is positioned on the proximal side from the convex portion 26 c, the second locking portion 26 a 1 is pressed toward the second engagement portion 25 a 3 by the urging force of the holding spring 18. As a result, the second notch portion 26an is engaged with the second tooth portion 25ag.

  In the present embodiment, the shape of the second notch portion 26an and the second tooth portion 25ag is such that, in the engaged state, the second opening / closing member 25a is centered on the fourth connecting pin 34 from the upper direction to the left direction in the drawing. The second opening / closing member 25a is shaped so as to be able to further rotate and rotate in the clockwise direction while preventing the counterclockwise rotation and maintaining the open state.

  Moreover, in the above, the case where the opening / closing holding | maintenance part assembly | attachment process is performed after the opening / closing member base end part assembly | attachment process is demonstrated. However, you may make it perform an opening-and-closing holding part assembly | attachment process before an opening-and-closing member base end part assembly | attachment process. In this case, the operation of locking the second tooth portion 25ag of the second engagement portion 25a3 in a predetermined state with respect to the second notch portion 26an of the second locking portion 26a1 is performed in the opening / closing member base end portion assembly step. Done.

  The second opening / closing part assembly 21 assembled through the above-described second opening / closing part assembly step is fixed to each fixing surface 22p1 provided on the base end component constituting frame 22 as shown in FIG. The Thus, the second opening / closing unit 20 shown in FIG. 4 is configured.

  When the second opening / closing member 25a of the second opening / closing portion group 21 constituting the second opening / closing unit 20 is closed, the abutting pin 37 provided on the second connecting rod member 25b is in the first notch portion 24ap. Are arranged at predetermined positions. Further, when the second opening / closing member 25a is in the closed state, the second connecting rod member 25b and the link spring 17 are accommodated so as to lie in a space constituted by the first long hole 24c and the notch 24ap.

  The second opening / closing member 25a is configured such that the abutting pin 37 gradually changes to an open state as the notch 24ap moves in the direction of the rising surface 24ae. Specifically, when the abutting pin 37 moves from the position indicated by the solid line in the first notch 24ap of FIG. 11 as indicated by the broken line, the tip of the second connecting rod member 25b is centered on the second connecting pin 32. And the base end portion of the second connecting rod member 25 b is rotated around the third connecting pin 33.

  As a result, with the movement of the abutting pin 37 toward the base end side, the second connecting rod member 25b housed in the space formed by the first communication hole 24c1 and the notch 24ap is gradually raised. It is done. Further, as the second connecting rod member 25b rises, the second opening / closing member 25a resists the urging force of the link spring 17 and moves to the left in the figure as indicated by the arrow Y10 with the fourth connecting pin 34 as the center. Rotate in a clockwise direction that is upward from the stand. With the rotational movement of the second opening / closing member 25a, the engagement state between the second tooth portion 25ag and the second notch portion 26an changes for each tooth. As the engagement state changes in this way, the second opening / closing member 25a is gradually switched from the closed state to the open state, and held in the switched state.

  The second opening / closing member 25a is in the maximum open state when the abutting pin 37 contacts the rising surface 24ae of the notch 24ap. The second opening / closing member 25a has the second notch portion 26an engaged with the second tooth portion 25ag in the maximum open state or in a state where the butting pin 37 is located in the middle of the notch portion 24ap. Therefore, the second opening / closing member 25a is restricted from rotating counterclockwise. For this reason, the open state corresponding to the moving distance of the butting pin 37 is maintained.

  When the engagement state of the second tooth portion 25ag and the second notch portion 26an is released against the biasing force of the holding spring 18, the second opening / closing member 25a is moved by the biasing force of the link spring 17. The butting pin 37 is moved to the tip side to return to the closed state.

  In addition, as shown in FIG. 12, the front-end | tip part structure frame 2f equips the inner surface side with the 4th 1st assembly main body arrangement | positioning recessed part 2f1 and the 2nd assembly main body fixing recessed part 2f2.

The first assembly body 14 is slidably disposed in the first assembly body arrangement recess 2f1. An escape portion 2f3 in which the first connecting rod member 15b is disposed is formed on the proximal end side of the first assembly main body disposition recess 2f1.
On the other hand, the second assembly main body fixing recess 2f2 has a bottom surface 2f4, and the tip joint surface 24b of the second assembly main body 24 is disposed on the bottom surface 2f4.

  The first part body arrangement recess 2f1 and the second part body fixing recess 2f2 are separated by a wall 2f5. The wall portion 2f5 is configured as an abutting portion that abuts on the engaging protrusion 15c2 of the slider 15c constituting the first opening / closing link mechanism portion 15 of the first opening / closing portion group 11.

Here, the assembly of the interlocking opening / closing unit 2 will be described.
In assembling the interlocking opening / closing unit 2, the operator prepares a tip cover 9 with a tip spring 9 b fixed integrally, a tip portion constituting frame 2 f, a first opening / closing unit 10, and a second opening / closing unit 20. The operator puts the second assembly main body 24 of the second opening / closing unit 20 in a predetermined state on each second plane 12p2 provided in the unit main body 12 from the base end side of the first opening / closing unit 10. Fit together.

  Next, the operator fits the front end portion constituting frame 2 f to the front end side of the second opening / closing unit 20 fitted to the unit main body 12. That is, the front end joint surface 24b of the second assembly body 24 is disposed in the second assembly body fixing recess 2f2. Then, the operator joins the tip joint surface 24b of the second assembly body 24 and the bottom surface 2f4 of the tip part constituting frame 2f, for example, by welding.

As a result, the distal end configuration frame 2f is integrally fixed to the distal end side of the second assembly main body 24 constituting the second opening / closing unit 20.
Here, the operator slides the second opening / closing unit 20 with respect to the axial direction of the first opening / closing unit 10, so that the blade member 16 b of the first opening / closing holding portion 16 and the blade member 26 b of the second opening / closing holding portion 26. The action in the contact state and the non-contact state with is confirmed.

  Specifically, the operator firstly has the abutting member 23 in which the sliding protrusion 24ar of the second assembly main body 24 fixed to the tip portion constituting frame 2f is fixed to the second plane 12p2 of the unit main body 12. It is confirmed whether or not it is arranged in the sliding groove 23d. Thereafter, the operator checks whether or not the sliding protrusion 24ar smoothly moves in the sliding groove 23d.

  Further, the operator moves the distal end portion constituting frame 2f toward the proximal end side with respect to the unit main body 12, whereby the proximal end surface of the wall portion 2f5 comes into contact with the distal end surface of the engaging protrusion 15c2, and the slider 15c is moved to the unit. Whether the first opening / closing member 15a is changed from the closed state to the open state is confirmed by moving the main body 12 toward the proximal end side.

  Further, the operator moves the tip portion constituting frame 2f from the tip surface of the unit body 12 to the tip side, so that the abutting pin 37 abuts on the pin abutting portion 23c, and the abutting pin 37 is moved to the unit body 12. The second opening / closing member 25a is confirmed to be changed from the closed state to the open state by moving the base member to the proximal end side.

  Further, when the blade member 16b and the blade member 26b are not in contact with each other, the operator uses the urging force of the holding spring 18 to cause the first notch portion 16an and the first engagement portion 15a3 of the first locking portion 16a1. Confirmation of whether or not a locked state in which the first tooth portion 15ag is engaged can be obtained, and whether or not a locked state in which the second notch portion 26an and the second tooth portion 25ag are engaged can be obtained. Check.

  In addition, the operator moves the second opening / closing unit 20 from the distal end side to the proximal end side of the first opening / closing unit 10 so that the second contact surface 26b2 of the blade member 26b and the inclined surface 16b3 of the blade member 16b It is confirmed whether or not. Thereafter, the operator passes the second contact surface 26b2 and the first contact surface 26b1 of the blade member 26b in contact with each other on the inclined surface 16b3, whereby the first notch portion 16an of the first locking portion 16a1. And whether or not the first contact state for releasing the locking state between the first engagement portion 15a3 and the first tooth portion 15ag of the first engagement portion 15a3 can be obtained.

  At this time, the positional relationship between the first opening / closing member 15a disposed on the distal end side and the second opening / closing member 25a disposed on the proximal end side is switched. That is, the front-rear positional relationship between the first opening / closing member 15a and the second opening / closing member 25a is switched.

  In addition, the operator moves the second opening / closing unit 20 from the proximal end side to the distal end side of the first opening / closing unit 10, so that the inclined surface 26 b 3 of the blade member 26 b and the second contact surface 16 b 2 of the blade member 16 b It is confirmed whether or not. Thereafter, the operator passes the second notch portion 26an and the second tooth by the inclined surface 26b3 of the blade member 26b passing through the second contact surface 16b2 and the first contact surface 16b1 of the blade member 16b. It is confirmed whether or not the second contact state for releasing the locked state with the portion 25ag can be obtained. At this time, the positional relationship before and after the second opening / closing member 25a and the first opening / closing member 15a is switched again.

  Next, the operator places the tip spring 9b attached to the tip cover 9 from the tip side of the unit body 12 into the inner hole 12a, applies an adhesive, or welds the tip spring 9b. Are integrally bonded and fixed in the inner hole 12a.

Here, when the operator moves the tip portion constituting frame 2f to the tip side from the tip surface of the unit body 12, the tip cover 9 is integrated with the tip portion constituting frame 2f against the urging force of the tip spring 9b. Confirm whether to move. Further, when the operator moves the distal end component frame 2f that has moved from the distal end surface of the unit body 12 to the distal end side to the proximal end side, the distal end cover 9 is moved by the urging force of the distal end spring 9b. It is confirmed whether or not it moves together with 2f.
After completing this confirmation, the interlocking opening / closing unit 2 can be obtained.

  Next, the operator connects the first opening / closing unit 10 and the second opening / closing unit 20 of the interlocking opening / closing unit 2 to the first sliding member 4 shown in FIG. Assembling work for connecting and fixing to the second connecting member 5 a fixed to 5 is performed.

  Specifically, the operator fastens and fixes the first connecting member 4a and the base end portion of the unit main body 12 of the first opening / closing unit 10 with the first assembly screw 2m1. Finally, the operator attaches the second connecting member 5a and the base end component frame 22 fixed to the base end portion of the second subassembly body 24 of the second opening / closing unit 20 to the second assembly screw. Fasten and fix with 2m2.

Here, the operator appropriately operates the operation unit 8 to check whether or not the interlocking opening / closing unit 2 performs a predetermined operation.
After the confirmation, the endoscope insertion apparatus 1 can be obtained.

The operation of the endoscope insertion apparatus 1 configured as described above will be described.
As shown in FIG. 13, the endoscope insertion apparatus 1 is configured as an endoscope system 100 in combination with an endoscope 50. The insertion portion 51 of the endoscope 50 is inserted into the through hole of the first sliding member 4 from the proximal end opening of the first grip portion 6. The insertion portion 51 protrudes to the outside through the inner hole of the unit main body 12, the inner hole of the tip spring 9b, and the endoscope passage hole 9a of the tip cover 9 constituting the tip portion of the interlocking opening / closing unit 2.

  In the present embodiment, the distal end portion 52 of the insertion portion 51, the bending portion 53, and the distal end side portion of the flexible tube portion 54 are projected from the endoscope passage hole 9a. As a result, the bending portion can be bent in the vertical and horizontal directions, for example, by an operator appropriately operating a bending operation means provided in an operation portion (not shown) of the endoscope 50.

  The outer peripheral surface of the flexible tube portion 54 of the insertion portion 51 is substantially in close contact with the inner surface of the first sliding member 4. For this reason, the insertion part 51 of the endoscope 50 and the endoscope insertion apparatus 1 can move substantially integrally.

  In addition, the first opening / closing part group 11 of the interlocking opening / closing unit 2 of the endoscope insertion apparatus 1 and the second opening / closing part group 21 of the second opening / closing unit 20 are both closed, and the first grip 6 and the second grip By maintaining the distance from the part 7 at the distance L, the closed state of the first opening / closing part group 11 and the closed state of the second opening / closing part group 21 of the interlocking opening / closing unit 2 are maintained.

An example of insertion of the endoscope system 100 configured as described above into a tube will be described with reference to the drawings.
A case where the endoscope system 100 is inserted into, for example, an elongated pipe 90 will be described with reference to FIGS. 14A and 14B. Note that the endoscope 50 of the endoscope system 100 is, for example, an industrial endoscope.

  When the operator inserts the endoscope system 100 into the pipe 90 shown in FIG. 14A, the operator holds the distance between the first grip portion 6 and the second grip portion 7 constituting the operation portion 8 at a distance L. deep. Then, the worker arranges the insertion device insertion portion 3 in which the distal end side of the insertion portion 51 protrudes from the distal end surface of the distal end cover 9 in the pipe 90.

  Thereafter, the operator holds the first grip portion 6 and the second grip portion 7 with the left and right hands, and inserts the insertion device insertion portion 3 of the endoscope insertion device 1 toward the deep portion of the pipe 90. To go. 14B, the insertion device insertion portion 3 and the distal end portion 52 of the insertion portion 51 protruding from the distal end surface of the distal end cover 9 are inserted into the deep portion of the pipe 90.

  Thus, in the endoscope system 100 in which the endoscope insertion apparatus 1 and the endoscope 50 are combined, the first opening / closing section set 11 and the second opening / closing section of the interlocking opening / closing unit 2 of the endoscope insertion apparatus 1. The first opening and closing of the interlocking opening / closing unit 2 is performed by closing the pair 21 and inserting the insertion device insertion portion 3 while keeping the distance between the first grip portion 6 and the second grip portion 7 at a distance L. The distal end portion 52 of the endoscope 50 can be introduced into the deep portion of the pipe 90 without changing the closed state of the part set 11 and the closed state of the second opening / closing part set 21.

  The endoscope 50 of the endoscope system 100 is not limited to an industrial endoscope, and may be a medical endoscope inserted into the large intestine or the like. The surgeon closes both the first opening / closing part group 11 and the second opening / closing part group 21 of the interlocking opening / closing unit 2 of the endoscope insertion apparatus 1, and the first grip part 6 and the second grip part 7 are spaced from each other. By inserting the insertion device insertion portion 3 while maintaining the distance L, without changing the closed state of the first opening / closing portion set 11 and the closed state of the second opening / closing portion set 21 of the interlocking opening / closing unit 2. The distal end portion 52 of the endoscope 50 may be introduced deep into the large intestine.

  A procedure for inserting the endoscope system 100 into, for example, the large intestine 99 of a patient will be described with reference to FIGS. 15 to 31. Note that the endoscope 50 of the endoscope system 100 used in the present embodiment is a medical endoscope.

  In the endoscope system 100, when the distal end portion 52 of the endoscope 50 is inserted into the deep part of the large intestine 99, the surgeon has an opening / closing mechanism portion included in the interlocking opening / closing unit 2 provided in the endoscope insertion device 1, for example: To use.

  The surgeon does not use the opening / closing mechanism portion of the interlocking opening / closing unit 2 as shown in FIG. 15, that is, the surgeon has described the interval between the first grip portion 6 and the second grip portion 7 as described above. The insertion portion 51 of the endoscope and the insertion device insertion portion 3 (hereinafter referred to as the system insertion portion 101) are inserted from the anus 98 toward the deep portion of the large intestine 99 while maintaining the distance L. When the surgeon determines that further insertion of the system insertion portion 101 has become difficult, the operator appropriately moves the first grip portion 6 and the second grip portion 7 of the operation portion 8 forward and backward as shown in FIG. As shown in A), (B), and (C), the large intestine is squeezed to linearize the large intestine. Thereafter, the operator inserts the system as shown in FIGS. 17A and 17B by appropriately moving the first grip 6 and the second grip 7 forward and backward with respect to the linearized large intestine. The part 101 is inserted into the deep part.

  Note that the endoscope 50 of the endoscope system 100 is not limited to a medical endoscope, and may be an industrial endoscope inserted into a pipe or the like. When the operator determines that further insertion of the system insertion portion 101 is difficult in the piping as described above, the operator appropriately moves the first grip portion 6 and the second grip portion 7 of the operation portion 8 forward and backward. Then, the system insertion part 101 may be inserted into the deep part of the pipe.

Here, the operation for gathering the large intestine folds will be described.
With reference to FIGS. 18-29, the relationship between the operation state of the operation part at the time of performing the operation of dragging the intestinal fold and the operation state of the first opening / closing unit 10 and the operation state of the second opening / closing unit 20 will be described. To do.

  In FIGS. 18A to 18I, the first sliding member 4 includes the first grip portion 6 and the second sliding member 5 includes the second grip portion 7. It shall be assumed. 19-29, the opening / closing operation | movement of the 1st opening / closing member 15a etc. are demonstrated by showing one 1st opening / closing part group 11 among the some 1st opening / closing part groups 11 with which the 1st opening / closing unit 10 is provided. In addition, the opening / closing operation of the first opening / closing member 25a and the like will be described by illustrating one second opening / closing portion group 21 among the plurality of second opening / closing portion sets 21 included in the second opening / closing unit 20. Further, in FIG. 19 to FIG. 29, the tip spring 9b, the first sliding member 4, and the second sliding member 5 are not shown.

Here, a description will be given of the start of the dragging operation.
When it is determined that the further insertion of the system insertion unit 101 has become difficult at the start of the dragging operation, that is, without using the opening / closing mechanism unit of the interlocking opening / closing unit 2, the operation unit 8 is shown in FIG. As shown in the drawing of the initial state of the operation section, the base end of the first sliding member 4 and the base end of the second sliding member 5 are separated by a distance L. At this time, as shown in FIG. 19, both the first opening / closing member 15a of the first opening / closing part set 11 and the second opening / closing member 25a of the second opening / closing part set 21 are in the closed state. At this time, the second notch portion 26an and the second tooth portion 25ag are not locked.

  In performing the dragging operation, for example, the surgeon moves the second sliding member 5 to the distal end as shown by an arrow Y18A in FIG. 18B without changing the position of the proximal end of the first sliding member 4. Move towards the side.

  Then, the distance between the base end of the first sliding member 4 and the base end of the second sliding member 5 gradually becomes larger than the distance L. At this time, as shown in FIG. 20, the second opening / closing unit 20 and the tip portion constituting frame 2f fixed to the tip side thereof move toward the tip side.

  As the distal end component frame 2f moves toward the distal end side, the distal end cover (not shown) disposed on the distal end surface of the unit main body 12 is pressed by the distal end portion component frame 2f to be urged by the distal end spring 9b. Against this, it moves to the tip side together with the tip portion constituting frame 2f. Further, as the second opening / closing unit 20 moves toward the distal end side, the second opening / closing holding portion 26 moves toward the distal end side, whereby the blade member 26b of the second opening / closing holding portion 26 and the blade member of the first opening / closing holding portion 16 are moved. The contact state with 16b is gradually released, and the contact pin 37 moves toward the pin contact portion 23c of the contact member 23 fixed to the unit body 12.

  When the surgeon continues to move the second sliding member 5 to the distal end side, the distal end cover 9 moves to the distal end side together with the distal end portion constituting frame 2f. Further, with the movement of the second sliding member 5, the contact state between the blade member 26b of the second opening / closing holding portion 26 and the blade member 16b of the first opening / closing holding portion 16 is released, and the abutting pin 37 is pinned. The pin 37 is brought into contact with the contact portion 23c, and then the pin 37 is moved toward the rising surface 24ae in the first cutout portion 24ap.

As the abutting pin 37 is moved toward the rising surface 24ae, the second connecting rod member 25b of the second opening / closing unit 20 is gradually raised. Then, the second opening / closing member 25a rises from the closed state toward the maximum open state. As a result, the contact member 30 gradually comes into contact with the flange on the radially outer side of the inner hole 12a of the unit body 12. When the abutting pin 37 approaches or comes into contact with the rising surface 24ae and the second opening / closing member 25a of the second opening / closing unit 20 is in the maximum open state as shown in FIG. It is surely abuttingly arranged. The maximum open state of the second opening / closing member 25a is maintained by the second notch portion 26an of the second locking portion 26a1 being locked to the second tooth portion 25ag of the second engaging portion 25a3. At this time, the distance between the base end of the first slide member 4 and the base end of the second slide member 5 is a distance (L + M) as shown in the diagram of the second slide member maximum advance state in FIG. ) The maximum separated state is reached.
In the open state, the diameter-expanded state of each contact member 30, that is, the opening amount, varies depending on the inner diameter of the inserted portion such as the intestine, although not shown.

  Next, the surgeon performs an operation of pulling the second sliding member 5 closer to the hand side as indicated by an arrow Y18B in FIG. Then, the second opening / closing unit 20 and the distal end portion constituting frame 2f fixed to the distal end side thereof move to the proximal end side.

  As the distal end component frame 2f moves toward the proximal end side, the distal end cover 9 moves toward the proximal end side in close contact with the distal end portion component frame 2f by the urging force of the distal end spring 9b. Further, as the second opening / closing unit 20 moves to the proximal end side, the second opening / closing holding portion 26 moves to the proximal end side, and the second blade member 26b of the second opening / closing holding portion 26 is moved as shown in FIG. The contact surface 26b2 contacts the inclined surface 16b3 of the blade member 16b of the first opening / closing holder 16. That is, FIG. 18C shows a state in which the first opening / closing holding portion is in contact, and the blade member 26b of the second opening / closing holding portion 26 is retracted and contacts the blade member 16b of the first opening / closing holding portion 16. State.

  When the surgeon continues to move the second sliding member 5 to the proximal end side from the contact state of the first opening / closing holding portion, the distal end cover 9 moves to the proximal end side together with the distal end configuration frame 2f, The second contact surface 26b2 of the blade member 26b moves against the urging force of the holding spring 18 while contacting the inclined surface 16b3 of the blade member 16b. When the operation portion 8 has the positional relationship shown in FIG. 18D, the first notch portion 16an of the first locking portion 16a1 and the first teeth of the first engagement portion 15a3 as shown in FIG. The locking state with the part 15ag changes to the non-locking state. Then, the first opening / closing member 15 a is closed by the urging force of the link spring 17. However, since the first opening / closing member 15a is already closed in FIG. 22, which is the immediately preceding state, no change is observed here. That is, (D) of FIG. 18 is a 1st contact state, Comprising: The state which the locking state of the 1st notch part 16an and the 1st tooth | gear part 15ag of the 1st opening / closing unit 10 changed to the non-locking state It is.

  The surgeon continues to move the second sliding member 5 to the proximal end side from the first contact state, whereby the proximal end of the first sliding member 4 and the proximal end of the second sliding member 5 are The interval becomes the distance L again. At this time, the tip cover 9 abuts against the tip surface of the unit body 12 again.

  Then, with the subsequent movement of the second sliding member 5 toward the proximal end, the distance between the proximal end of the first sliding member 4 and the proximal end of the second sliding member 5 is gradually smaller than the distance L. It will become. As this interval gradually decreases, the tip portion constituting frame 2f moves on the unit body 12 and comes into contact with the tip surface of the engaging protrusion 15c2 of the slider 15c as shown in FIG. At this time, the second opening / closing holder 26 is located on the proximal end side with respect to the first opening / closing holder 16.

  When the surgeon continues to move the second sliding member 5 to the proximal end side from the state in which the proximal end portion of the distal end configuration frame 2f is in contact with the distal end surface of the engaging protrusion 15c2, the distal end configuration frame 2f is moved to the proximal end side. The slider 15c moves to the base end side and moves in the notch groove 14b toward the base end side rising surface. As the slider 15c moves, the first connecting rod member 15b of the first opening / closing unit 10 is gradually raised. Then, the first opening / closing member 15a rises from the closed state toward the maximum open state.

  As a result, the contact member 30 gradually increases in diameter toward the radially outer side of the inner diameter 12a and comes into contact with the heel. Then, the base end surface of the slider 15c approaches or contacts the base end surface of the notch groove 14b, and the first opening / closing member 15a is fully opened together with the second opening / closing member 25a as shown in FIGS. When this happens, the contact member 30 is reliably placed in contact with the heel.

Even in the maximum open state, each opening amount of the contact member 30 varies depending on the inner diameter of the insertion portion such as the intestine. That is, when the intestinal diameter is small, the maximum open state is achieved with a smaller opening amount than the open state shown in the figure.
The maximum open state of the first opening / closing member 15a is held by the first notch portion 16an of the first locking portion 16a1 being locked to the first tooth portion 15ag of the first engaging portion 15a3. At this time, as shown in FIG. 18E, the operation unit 8 is in a minimum separated state in which the distance between the proximal end of the first sliding member 4 and the proximal end of the second sliding member 5 is a distance S. Become.

  As described above, by changing the operation unit 8 from the state shown in FIG. 18B to the state shown in FIG. 18E, the second opening / closing member 25a in the maximum open state has a distance ((L + M) −S. ) You can move and pull the folds of the large intestine. Further, at this time, when the first opening / closing member 15a is in the maximum open state, the state in which the scissors gathered by the second opening / closing member 25a are gathered by the second opening / closing member 25a and the first opening / closing member 15a is maintained. The

  When the surgeon performs an operation of pushing the second sliding member 5 to the distal end side again from this minimum separated state, the base end of the first sliding member 4 and the base end of the first sliding member 4 as shown by an arrow Y18C in FIG. The distance from the base end of the second sliding member 5 gradually approaches the distance L from the distance S. Then, the second opening / closing unit 20 and the tip portion constituting frame 2f fixed to the tip end side thereof move on the unit body 12 toward the tip end side.

  The second opening / closing holding part 26 moves to the tip side as the tip part constituting frame 2f moves to the tip side. Then, as shown in FIG. 26, the inclined surface 26 b 3 of the blade member 26 b of the second opening / closing holder 26 abuts on the second contact surface 16 b 2 of the blade member 16 b of the first opening / closing holder 16. That is, FIG. 18F shows a state in which the blade member 26b of the second opening / closing holding portion 26 has advanced and is in contact with the blade member 16b of the first opening / closing holding portion 16.

  In a state where the blade member 26b of the second opening / closing holding portion 26 is advanced and is in contact with the blade member 16b of the first opening / closing holding portion 16, the operator continues to move the second sliding member 5 to the distal end side. As a result, the inclined surface 26b3 of the blade member 26b moves against the urging force of the holding spring 18 while contacting the second contact surface 16b2 and the first contact surface 16b1 of the blade member 16b. . Then, as shown in FIG. 27, the locking state between the second notch portion 26an of the second locking portion 26a1 and the second tooth portion 25ag of the second engaging portion 25a3 changes to the non-locking state, and the second The opening / closing member 25a changes from an open state to a closed state indicated by a broken line. In other words, the diameter of the contact member 30 whose diameter has been expanded is reduced at once.

  As a result, the contact arrangement state of the contact member 30 fixed to the second opening / closing member 25a with respect to the flange is released. At this time, the scooping up by the second opening / closing member 25a is held in the scooping-up state by the first opening / closing member 15a. FIG. 18G shows the second contact state where the locking state of the second notch portion 26an and the second tooth portion 25ag of the second opening / closing unit 20 has changed to the non-locking state. It is.

  The operator continues to move the second sliding member 5 to the distal end side from the second contact state, whereby the distance between the proximal end of the first sliding member 4 and the proximal end of the second sliding member 5 is reached. Becomes the distance L again, and thereafter, the distance between the base end of the first sliding member 4 and the base end of the second sliding member 5 gradually becomes larger than the distance L.

  As the second sliding member 5 moves toward the distal end side, the distal end portion constituting frame 2 f moves toward the distal end side of the unit main body 12. Further, the abutting pin 37 moves toward the abutting member 23. Then, the tip cover 9 moves to the tip side with the movement of the tip portion constituting frame 2f, and the abutting pin 37 again abuts on the pin abutting portion 23c of the abutting member 23 fixed to the unit main body 12.

  Here, when the second sliding member 5 is continuously moved to the distal end side by the operator and moved toward the maximum advanced state of the second sliding member shown in FIG. 37 is moved toward the rising surface 24ae in the first cutout 24ap. As a result, as described above, the second connecting rod member 25b of the second opening / closing unit 20 is gradually raised, and the second opening / closing member 25a changes from the closed state to the maximum opened state.

  As a result, the abutting member 30 gradually expands in diameter and abuts against the heel. Then, the abutting pin 37 approaches or comes into contact with the rising surface 24ae, and the second opening / closing member 25a is fully opened together with the first opening / closing member 15a as shown in FIG. When the second opening / closing member 25a is in the maximum open state, the contact member 30 is reliably placed in contact with the bag.

  Thereafter, the operator operates the operation unit 8 as shown in FIGS. 18C and 18D. At this time, the first opening / closing member 15a is in the maximum open state, and the second opening / closing unit 20 including the second opening / closing member 25a changed to the maximum open state is moved to the proximal end side.

  Then, as shown in FIG. 30, the second contact surface 26 b 2 of the blade member 26 b of the second opening / closing holding portion 26 contacts the inclined surface 16 b 3 of the blade member 16 b of the first opening / closing holding portion 16. Here, when the operator continues to move the second sliding member 5 to the proximal end side, the first opening / closing holding portion 16 is rotated clockwise about the fifth connecting pin 35, as shown in FIG. As described above, the locking state between the first notch portion 16an of the first locking portion 16a1 and the first tooth portion 15ag of the first engaging portion 15a3 changes to the non-locking state.

  Then, the contact member 30 fixed to the first opening / closing member 15a is reduced in diameter, and the contact arrangement state with respect to the heel is released. At this time, since the contact member 30 of the second opening / closing member 25a in the maximum open state is in contact with the heel, the squeezed state of the heel held by the first opening / closing member 15a is the second opening / closing member 25a. Held in.

  Then, by subsequently performing the operations shown in FIGS. 18E to 18H, the second opening / closing member 25a in the fully opened state moves the colon for a second time. In addition, the first opening / closing member 15a is in the maximum open state, and the scooping state of the scissors can be maintained.

  Thereafter, the surgeon repeatedly performs the operations shown in FIGS. 18C to 18H, in other words, an operation for switching the front-rear relationship between the first opening / closing member 15a and the second opening / closing member 25a. As shown in FIG. 16B, it is possible to obtain a squeezed state by squeezing the sardine as many times as the above is repeated.

  In the state where at least one of the contact member 30 fixed to the first opening / closing member 15a or the contact member 30 fixed to the second opening / closing member 25a is disposed in contact with the intestinal wall. When the operator operates the operation unit 8 so as to be separated from the anus, a pulling operation of the large intestine can be performed to linearize the large intestine as shown in FIG.

  When the system insertion unit 101 is inserted into the colon that has been straightened as shown in FIG. 16 (c) toward the deep part of the large intestine, the surgeon is shown by (C) in FIG. As shown in FIG. 18 (I), the contact member 30 of the second opening / closing member 25a is not used to repeat the hand operation without changing the distance from the patient's anus to the operation unit 8 as described above. Pushing to move the position of the operating portion, specifically, the position of the base end of the first sliding member 4 in the advancing direction (anus side) as shown by an arrow Y18D Perform the operation.

  That is, the operator advances the position of the base end of the first sliding member 4 as shown in FIG. 18I while performing the operation shown in FIGS. 18C-18H. By repeatedly performing the operation of moving in the direction, the system insertion unit 101 can be advanced as shown in FIGS.

  When both the first opening / closing member 15a and the second opening / closing member 25a are closed, the first contact state is obtained and the first opening / closing member 15a is closed, and then the second contact state is obtained. After the first opening / closing member 25a is closed, or the second contact state is obtained and the first opening / closing member 25a is closed, the first contact state is obtained and the first opening / closing member 15a is closed. Thus, both the first opening / closing member 15a and the second opening / closing member 25a can be closed.

  Further, in the above-described embodiment, when the dragging operation starts, that is, when it is determined that further insertion of the system insertion unit 101 is difficult, the position of the base end of the first sliding member 4 is not changed. For example, as indicated by an arrow Y18A in FIG. 18B, the second sliding member 5 is moved toward the distal end side.

  However, when it is determined that further insertion of the system insertion portion 101 has become difficult, the surgeon moves the second sliding member 5 to the proximal side without changing the position of the proximal end of the first sliding member 4. 18E, after obtaining the state shown in FIG. 18E, an operation of moving the second sliding member 5 is performed so as to perform a scooping operation of the scissors, or the second sliding The first sliding member 4 is moved toward the distal end side without changing the position of the base end of the member 5 to obtain the state shown in FIG. The first sliding member 4 is moved toward the base end side without changing the position of the base end of the second sliding member 5 by moving the scissors and moving the scissors. After obtaining the state shown in FIG. 18 (B), the first sliding member 4 may be moved so as to perform the scooping operation. .

Furthermore, in the endoscope insertion apparatus 1 used in the present embodiment, the inner peripheral surface of the tip spring 9b is covered with an extendable cover 103 as shown in FIG. 32, and the tip of the elastic tube body 104 is covered with the tip cover 9. The base end portion is integrally fixed to the outer peripheral side, and the base end portion thereof is integrally fixed to the outer periphery of the distal end portion of the second sliding member 5 as shown in FIG.
The elastic cover 103 is formed of a first elastic member that can be elastically deformed, and the elastic tube body 104 is formed of a second elastic member that has elastic properties and can be elastically deformed.
The end portions of the expansion and contraction cover 103 are fixed in close contact with a predetermined position on the inner surface of the tip cover 9 and a predetermined position on the inner surface of the front end of the unit main body 12, respectively.

  Thus, in the endoscope insertion apparatus 1, the relative position between the first sliding member 4 and the second sliding member 5 is appropriately changed to be provided on the distal end side of the first sliding member 4. The first opening / closing unit set 11 is changed by changing the relative positions of the first opening / closing unit 10 and the second opening / closing unit 20 provided on the distal end side of the second sliding member 5. The first opening / closing member 15a and the second opening / closing member 25a provided in the second opening / closing portion group 21 are switched to the open state or the closed state, and the hand operation for dragging the intestinal wall and the insertion device insertion portion 3 Hand operation to advance and retreat can be realized.

  Further, the first opening and closing unit 15 a provided in the first opening and closing part set 11 and the second opening and closing part set 21 are provided by changing the relative positions of the first opening and closing unit 10 and the second opening and closing unit 20. When the second opening / closing member 25a is switched to the open state or the closed state, the distal end portion constituting frame 2f fixed to the distal end side of the second opening / closing portion group 21 moves from the distal end surface of the unit body 12 to the distal end side. By adopting the configuration, the rigid length of the endoscope insertion apparatus 1 can be shortened.

Further, when the relative position between the first opening / closing unit 10 and the second opening / closing unit 20 is changed and the tip cover 9 is moved to the tip side together with the tip portion constituting frame 2f, the inner peripheral surface of the tip spring 9b is Since the elastic tube body 104 is covered with the elastic cover 103 and the distal end of the elastic tube body 104 is fixed to the outer peripheral surface of the distal end cover 9, and the base end is fixed to the outer periphery of the distal end of the second sliding member 5, The adhering sludge or foreign matter such as bodily fluid and filth in the large intestine adheres to the inner and outer surfaces of the first opening / closing unit 10 and the second opening / closing unit 20 as the endoscope insertion portion 51 advances to the deep portion. And the gap between the first opening / closing unit 10 and the second opening / closing unit 20 and between the first sliding member 4 and the second sliding member 5 are reliably prevented from entering the insertion device insertion portion. can do.
Also, as shown in FIG. 33, the elastic tube body 104 is integrally fixed to the contact member 30, thereby reliably preventing the contact member 30 from contacting the body wall or the like through the elastic tube body 104. can do.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 ... Endoscope insertion apparatus 2 ... Interlocking opening / closing unit 2f ... Tip part structure frame 2f1 ... 1st part main body arrangement | positioning recessed part 2f2 ... 2nd part main body fixing recessed part 2f3 ... Escape part 2f4 ... Bottom face 2f5 ... Wall part 2m1 ... Set Screw 2m2 ... Assembly screw
DESCRIPTION OF SYMBOLS 3 ... Inserting device insertion part 4 ... 1st sliding member 4a ... 1st connection member 5 ... 2nd sliding member 5a ... 2nd connection member 6 ... 1st grip part 6 7 ... 2nd grip part
DESCRIPTION OF SYMBOLS 8 ... Operation part 9 ... Tip cover 9a ... Endoscope passage hole 9b ... Tip spring 10 ... First opening / closing unit 11 ... First opening / closing part group
DESCRIPTION OF SYMBOLS 12 ... Interlocking opening / closing unit main body (unit main body) 12a ... Inner hole 12p ... Plane 12p1 ... 1st plane 12p2 ... 2nd plane 14 ... 1st assembly main body 14a ... Fixed surface
14b ... Notch groove 14c ... 1st long hole 14c1 ... 1st communicating hole
14c2 ... 2nd communicating hole 14d ... 2nd long hole 14e ... Hole for spring
14f ... Notch 14fh ... Screw insertion hole 14h3 ... Third connecting pin fixing hole
14h4 ... Fourth connecting pin fixing hole 14h5 ... Fifth connecting pin fixing hole
DESCRIPTION OF SYMBOLS 15 ... 1st opening / closing link mechanism part 15a ... 1st opening / closing member 15a1 ... long hole
15a2 ... Notch surface 15a3 ... Engagement part 15a4 ... Installation surface 15a5 ... Link convex part 15af ... Screw hole 15ag ... Tooth part
15ah1 ... 1st connecting pin fixing hole 15ah4 ... 4th connecting pin insertion hole
15b ... first connecting rod member 15b1 ... gap 15bh1 ... first connecting pin insertion hole 15bh2 ... second connecting pin insertion hole 15c ... slider 15c1 ... sliding portion 15c2 ... engagement projection 15c3 ... long hole 15ch2 ... second connecting pin fixed Hole
15 cp ... sliding surface 15 cu ... upper surface 16 ... first opening / closing holding part 16 a ... holding part body 16 a ... holding part body 16 a 1 ... locking part 16 ah ... hole 16 an ... notch part 16 as ... side face 16 b ... blade member 16 b 1 ... first contact Surface 16b2 ... Second contact surface 16b3 ... Inclined surface 16c ... Projection
16ch5 ... fifth connecting pin insertion hole 17 ... link spring 17f ... hook part 18 ... holding part spring 20 ... second opening / closing unit 21 ... second opening / closing part set
22 ... Base end configuration frame 22a ... Inner hole 22a1 ... First sliding surface 22a2 ... Second sliding surface 22p1 ... Fixed surface 22p2 ... Fastening surface 22pf ... Screw hole 23 ... Abutting portion 23c ... Pin contact portion 23d ... Slide groove 23p ... Fixed surface 24 ... Second assembly 24a1 ... Tip 24a2 ... Bent 24a3 ... Base end 24ad ... Axial groove 24ae ... Rising surface 24ap ... Notch 24ar ... Slide projection 24b ... Tip joint Surface 24c ... 1st slot
24c1 ... 1st communication hole 24c2 ... 2nd communication hole 24d ... 2nd long hole
24e ... Spring hole 24f ... Second notch 24h3 ... Third connection pin fixing hole 24h4 ... Fourth connection pin fixing hole 24h5 ... Fifth connection pin fixing hole
25 ... 2nd opening-and-closing link mechanism part 25a ... 2nd opening-and-closing member 25a1 ... Long hole 25a2 ... Notch surface 25a3 ... Engagement part 25a4 ... Installation surface
25a5 ... Link convex part 25af ... Screw hole 25ag ... Tooth part
25ah1 ... first connecting pin fixing hole 25ah4 ... fourth pin passage hole 25b ... second connecting rod member 25b1 ... gap 25bh1 ... first connecting pin insertion hole 25bh2 ... pin fixing hole 26 ... second opening / closing holding part 26a ... holding part body 26a1 ... Locking portion 26ah ... Hole 26an ... Notch portion 26as ... Side face 26b ... Blade member 26b1 ... First contact surface
26b2 ... second contact surface 26b3 ... inclined surface 26c ... convex portion
26ch5 ... fifth connecting pin insertion hole 30 ... abutting member 30a ... stepped hole
31 ... 1st connection pin 32 ... 2nd connection pin 33 ... 3rd connection pin
34 ... Fourth connecting pin 35 ... Fifth connecting pin 36 ... Fixing screw 37 ... Abutting pin 50 ... Endoscope 51 ... Inserting portion 52 ... Tip portion 53 ... Bending portion 54 ... Flexible tube portion 90 ... Piping 98 ... Anal 99 ... large intestine 100 ... endoscope system
DESCRIPTION OF SYMBOLS 101 ... System insertion part 103 ... Telescopic cover 104 ... Elastic tube body

Claims (7)

An endoscope insertion device for inserting an endoscope into a deep part of a tube,
A first opening / closing unit movable in the direction of the insertion shaft;
A second opening / closing unit movable on the same axis as the first opening / closing unit;
A first opening / closing portion provided on the first opening / closing unit, the first opening / closing portion including a contact member that comes into contact with the inside of the pipe when the diameter is increased and reduced in a radial direction;
A second opening / closing portion provided on the second opening / closing unit, the second opening / closing portion including a contact member that comes into contact with the inside of the pipe when the diameter is increased and decreased in a radial direction and the diameter is increased;
In an endoscope insertion device comprising: an opening / closing state switching means for switching an opening / closing state of the first opening / closing portion and the second opening / closing portion,
Provided with an elastic member for preventing intrusion of foreign matter on the inner surface side of the first opening / closing unit or the second opening / closing unit moving in the direction of the insertion shaft and on the outer surface side of the first opening / closing unit and the second opening / closing unit. Endoscope insertion device characterized. A first sliding member having a through-hole through which an insertion portion of the endoscope can be inserted;
A second sliding member having a through-hole through which the first sliding member can be inserted and having a length dimension shorter than that of the first sliding member inserted slidably into the through-hole;
An axial through-hole through which the insertion portion can be inserted and a first placement portion and a second placement portion are alternately arranged in the circumferential direction of the outer surface, which are integrally fixed to the distal end side of the first sliding member. And a first opening / closing portion set having a first opening / closing portion that is fixed to the first disposing portion and is rotated around a rotation shaft to change between a closed state and an open state. A first opening / closing unit;
An annular member that is integrally fixed to a distal end portion of the second sliding member and is slidable in an axial direction on an outer surface side of the unit main body, and a distal end side portion is fixed to the annular member. A second opening / closing portion set having a second opening / closing portion that is slidably disposed on the second arrangement portion of the unit main body and that changes between an open state and a closed state by being rotated about a rotation shaft. By changing the relative positions of the first sliding member and the second sliding member, the annular member and the second opening / closing part set are integrally slid on the opening / closing unit main body. A second opening and closing unit that moves;
The endoscope has a through-hole through which the insertion portion can pass, can be placed in close contact with the front end surface of the unit body where the opening of the through-hole is formed, and is placed in contact with the annular member of the second opening / closing unit. A tip cover member having an end surface,
The endoscope has an inner diameter through which the insertion portion can pass, one end is fixed around the through hole of the tip cover member, and the other end is fixed around the opening of the through hole of the unit body. The second opening / closing unit has an urging force for closely arranging the tip cover member to the tip surface of the unit body, and changes the relative position between the first sliding member and the second sliding member. An elastic member provided with an elastic deformation amount for moving the front end cover member and the second opening / closing unit together when the front end surface of the unit main body is moved from the front end surface to the front end side.
An elastically deformable first elastic member, one end of which is tightly fixed to the inner surface of the tip cover member and the other end is fixedly fixed to the inner surface of the axial through hole of the unit body;
An elastically deformable second elastic member, one end of which is closely fixed to the outer peripheral surface of the tip cover member and the other end is fixed to the outer peripheral surface of the second sliding member;
An endoscope insertion apparatus comprising the endoscope. The first opening / closing part group is the opening / closing state switching means, and the first opening / closing part and the annular member move on the outer surface side of the unit body to the first sliding member side, thereby A first sliding body that slides on the one opening portion toward the rotation axis of the first opening / closing portion; and a first connecting rod member that connects the first sliding body and the first opening / closing member. Comprising a first opening / closing link mechanism portion,
The second opening / closing portion set is the opening / closing state switching means, and the second opening / closing portion and the second opening / closing portion set are moved to the tip cover member side on the second arrangement portion of the unit body. A second sliding member that slides on the second arrangement portion toward the rotation shaft of the second opening / closing portion, and a second connecting rod member that connects the second sliding member and the second opening / closing member. Comprising a second opening / closing link mechanism configured with
The endoscope insertion apparatus according to claim 1 or 2, wherein the endoscope insertion apparatus is provided.   The first opening / closing part set is capable of holding the first opening / closing part from the closed state to the open state step by step, and includes a first locking mechanism part that holds the open state, and the second opening / closing part set includes: The endoscope insertion apparatus according to claim 3, further comprising a second locking mechanism portion that can hold the second opening / closing portion in an open state step by step from the closed state, and holds the open state.   The first opening / closing portion group and the second opening / closing portion group are each provided with a locking state release member, and the second opening / closing portion group is moved to the tip cover member side on the second arrangement portion of the unit body. When the second locking mechanism portion is released from the locked state and the second opening / closing portion group is moved to the second sliding member side on the second arrangement portion of the unit body, The endoscope insertion apparatus according to claim 4, wherein the locking state of the locking mechanism portion is released. The elastic member is a tension coil spring,
The endoscope insertion apparatus according to any one of claims 1 to 5, wherein the tension coil spring is stretchable and covered on an inner surface side with a first elastic member that can be elastically deformed. .   6. The front end cover member also serves as a fixing member that fixes a front end portion of a second elastic member covering and covering the first opening / closing portion group and the second opening / closing portion group. The endoscope insertion apparatus according to any one of the above.

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