JP5519564B2 - In-pipe insertion device - Google Patents

Description

  The present invention relates to an in-tube insertion device used when an endoscope is introduced deep 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 deep small intestine.

  In recent years, endoscope insertion techniques require techniques such as twisting, dragging, and shaft holding in addition to bending operations, as well as an air supply device for expanding the lumen, or an X-ray for confirming the insertion state A device has been devised so that the insertion can be performed efficiently by using a device together.

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 reliably inserted deeply by repeating the following operations.
First, an operator inserts an overtube having a deflated balloon part into a deeper part of the intestine than a balloon part of the expanding medical instrument in a state where the balloon part of the medical instrument is inflated and fixed to the intestinal wall. I 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. The operation of inserting deeper into the intestine than the balloon is performed. 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. Repeat the operation to insert deeper into the intestine than the part.

JP 2009-50559 A

  However, in the endoscope insertion device of Patent Document 1, an operation for inflating or deflating each balloon portion for insertion into a deep portion, and an operation for advancing a medical instrument or overtube having the deflated balloon portion. Need to be repeated alternately. For this reason, the insertion operation is complicated, and it takes time to inflate and deflate the balloon portion, and thus it has been difficult to insert efficiently.

  The present invention has been made in view of the above circumstances, and an in-tube insertion device that can easily perform an insertion operation for guiding an endoscope insertion portion to a deep portion and can reliably and smoothly insert the endoscope insertion portion into the deep portion. The purpose is to provide.

An in-pipe insertion device according to an aspect of the present invention includes a first opening / closing unit movable in an insertion axis direction, a second opening / closing unit movable on the same axis as the first opening / closing unit, and the first opening / closing unit. A first opening / closing section comprising a contact member having a contact surface that can be changed to a closed state close to one surface of the fixed member or an open state spaced from the one surface of the fixed member; A contact member having a contact surface that can be changed to a closed state close to one surface of the fixing member provided in the second opening / closing unit or an open state spaced from the one surface of the fixing member; When the second opening / closing part, the first opening / closing unit, and the second opening / closing unit are moved in the axial direction, the positional relationship between the first opening / closing part and the second opening / closing part is switched. 1 opening part and the second opening part The open / close state switching means for switching the open / close state of the first open / close unit, the first open / close unit, and the second open / close unit are moved in the insertion axis direction by moving the first open / close unit and the second open / close unit, respectively. In an in-pipe insertion device comprising an opening / closing mechanism that opens and closes an opening / closing unit provided in the opening / closing unit,
The opening / closing portion has a cam hole at a first position, a shaft portion at a second position, and the fixing member forms a groove at a first position, while the shaft portion at a second position. The opening / closing mechanism portion is provided in advance with one end portion slidably disposed in the cam hole of the opening / closing portion and the other end portion rotatably disposed on the shaft portion of the fixing member. A first link member configured in a shape, and one end portion rotatably connected to the shaft portion of the opening / closing portion and the fixed portion, which are rotatably connected to the first link member at a predetermined position. A second link member is provided that has a second end that is slidably disposed in a groove formed in the member and is configured in a predetermined shape.

  ADVANTAGE OF THE INVENTION According to this invention, the insertion operation which guides an endoscope insertion part to the deep part can be performed easily, and the intraductal insertion device which can insert into the deep part of an endoscope insertion part reliably and smoothly is realizable.

Explanatory drawing including the front-end | tip part enlarged view explaining an intraductal insertion device The figure explaining schematic structure of a sliding operation interlocking opening / closing unit, and an exploded perspective view of the tube insertion device comprised including this sliding operation interlocking opening / closing unit, a 1st sliding member, a 2nd sliding member, etc. Explanatory drawing explaining the full open state in which the opening / closing part group of the first opening / closing unit and the opening / closing part of the second opening / closing unit constituting the sliding operation interlocking opening / closing unit are both opened. The figure explaining the front-end | tip cover member, 1st opening / closing unit, 2nd opening / closing unit, pinching prevention member, etc. which comprise a sliding operation interlocking opening / closing unit. Diagram explaining the butting part Longitudinal cross-sectional view illustrating the configuration of the first opening / closing part set The figure explaining the contact member which comprises the 1st opening-and-closing part group The figure explaining the 1st opening / closing member which comprises the 1st opening / closing link mechanism part of a 1st opening / closing part group. The figure explaining the 1st connection part which constitutes the 1st opening-and-closing link mechanism part of the 1st opening-and-closing part group. The figure explaining the 1st connection board which constitutes the 1st opening-and-closing link mechanism part of the 1st opening-and-closing part group. The figure explaining the slider which comprises the 1st opening-and-closing link mechanism part of the 1st opening-and-closing part group. The figure explaining the 1st opening and closing holding part which comprises the 1st opening and closing part group The figure explaining the 1st assembly main body which comprises the 1st opening-and-closing part assembly 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 the 1st opening-and-closing part group fixed to the 1st plane of a unit main part The figure explaining the relationship between the movement to the base end side of a slider, and the contact member which changes to an open state with the movement The figure which shows the contact member which changed into the open state further by the movement to the further base end side of a slider The figure which shows the state which the contact member opened still more by the movement to the further proximal end of a slider The figure which shows the state which the slider moved to the most proximal side and the contact member opened to the maximum The figure explaining a base end composition frame Longitudinal cross-sectional view illustrating the configuration of the second opening / closing section set The figure explaining the 2nd opening-and-closing member which constitutes the 2nd opening-and-closing link mechanism part of the 2nd opening-and-closing part group. The figure explaining the 2nd connection part which constitutes the 2nd opening-and-closing link mechanism part of the 2nd opening-and-closing part group. The figure explaining the 2nd connection board which constitutes the 2nd opening-and-closing link mechanism part of the 2nd opening-and-closing part group. The figure explaining the 2nd opening-and-closing holding part which comprises the 2nd opening-and-closing part group. The figure explaining the 2nd assembly main body which constitutes the 2nd opening-and-closing part assembly 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 the 2nd opening-and-closing part group fixed to the fixed surface of the base end part composition frame The figure explaining the relationship between the movement to the base end side of a butting pin, and the 2nd opening-and-closing member which changes to an open state with the movement The figure which shows the 2nd opening-and-closing member which changed to the open state further by the movement to the further proximal end side of a butting pin The figure which shows the state which the 2nd opening-and-closing member opened still more by the movement to the further base end side of a butting pin The figure which shows the state which the butting pin was moved to the most proximal end, and the 2nd opening-and-closing member opened to the maximum The figure explaining a tip part composition frame The figure explaining the endoscope system comprised combining the intraluminal insertion device and the endoscope The figure explaining the state which inserted the insertion apparatus insertion part of the in-pipe insertion device which comprises an endoscope system into piping. The figure explaining the state which inserted the insertion apparatus insertion part of the in-pipe insertion device into the deep part of piping. The figure explaining the state which inserted the insertion apparatus insertion part of the intraluminal insertion device which comprises an endoscope system into the large intestine FIGS. 19A and 19B are diagrams for explaining a procedure for inserting the intraluminal insertion device into the deep part of the large intestine. FIG. 19A is a diagram for explaining the start of squeezing of the large intestine and FIG. FIG. 19C is a diagram for explaining a state in which the large intestine folds are gathered by performing a plurality of operations, and FIG. 19C is a diagram for explaining a state in which the colon is linearized by performing a pulling operation. FIG. 20A is a diagram for explaining a procedure for advancing the intraductal insertion device toward a deep portion in the large intestine that has been linearized, and FIG. 20A shows a state in which the intraductal insertion device advances, and FIG. 20B FIG. 3 is a view showing a state in which the intraductal insertion device is advanced. FIG. 22A is a diagram for explaining a hand operation of the first sliding member and the second sliding member, and FIG. 21A is a diagram illustrating the first sliding in the initial state in which the first opening / closing member and the second opening / closing member are in a closed state; The figure which shows the positional relationship of a moving member and a 2nd sliding member, (B) of FIG. 21-(H) of FIG. 21 is an example of a dragging operation, Comprising: Moving the base end of a 1st sliding member 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. 21 is a figure explaining operation at the time of advancing the in-pipe insertion device. FIG. 21A is a diagram illustrating an initial state of the interlocking opening / closing unit in the initial state of the operation unit in FIG. 21A in which the first opening / closing member and the second opening / closing member are closed. As shown by the arrow in FIG. 21B, the second sliding member is moved to the distal end side, and the distance between the proximal end of the second sliding member and the proximal end of the first sliding member is gradually increased from the distance L. The figure explaining operation of the 2nd opening-and-closing unit when it is enlarged The figure which moved the 2nd sliding member to the most tip side as shown to the continuous line of FIG. 21 (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. 21C, the second sliding member is moved in the direction opposite to that shown in FIG. The figure shows that the blade member of the opening / closing unit comes into contact with the blade member and is in the non-locking state, and further moves so that the base end portion of the distal end configuration frame contacts the engaging protrusion of the slider of the first opening / closing unit. After the proximal end portion of the distal end configuration frame abuts on 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 shows the state which the blade member and the blade member of the 1st opening / closing unit contact | abutted As shown in FIG. 28 (G), the second sliding member is further moved to the distal end side so that the notch portion and the tooth portion of the second opening / closing unit are brought into the non-locking state, and the second opening / closing member is opened. Figure of change from state to 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. 26, and made the 1st opening / closing member and the 2nd opening / closing member the maximum open state The figure explaining the in-pipe insertion device which covered the interlocking opening and closing unit with the cover

Embodiments of the present invention will be described below with reference to the drawings.
The configuration of the in-pipe insertion device 1 will be described with reference to FIGS.
As shown in FIG. 1, the in-pipe insertion device 1 includes a sliding operation interlocking opening / closing unit (hereinafter abbreviated as an interlocking opening / closing unit) 2 positioned at a distal end, and an insertion device insertion part 3 connected to the interlocking opening / closing unit 2, for example. 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 and a second opening / closing unit 20 each having an opening / closing mechanism.

The 1st sliding member 4 and the 2nd sliding member 5 are moving means, Comprising: It is a pipe member which has a through-hole of a 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 in-pipe insertion device 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 first sliding member 4 and the second sliding member 5 have a circular cross section or a square shape such as a quadrangle or a hexagon, and the cross sectional shape in the present embodiment is a circle. . 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 of the first sliding member 4 with which the first grip portion 6 is integrated is longer than the length of the second sliding member 5 with which the second grip portion 7 is integrated. Is set. 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 configured such that the base end portion constituting frame 22 of the second opening / closing unit 20 constituting the interlocking opening / closing unit 2 is integrally fixed by, for example, a second assembly screw 2m2.

  The first opening / closing unit 10 constituting the interlocking opening / closing unit 2 is provided with a plurality of, for example, four first opening / closing unit sets 11 as opening / closing state switching means. The second opening / closing unit 20 constituting the interlocking opening / closing unit 2 is also provided with a plurality of, for example, four second opening / closing unit sets 21 as opening / closing state switching means.

As shown in FIGS. 1 and 2, the interlocking opening / closing unit 2 includes a first opening / closing part group 11 and a second opening / closing part group 21 that are alternately arranged in the circumferential direction.
1 and 2 are each in a closed state (also referred to as an initial state).

  Reference numeral 9 denotes a tip cover member. The distal end cover 9 is an annular member having an endoscope passage hole 9a that is a through hole through which an endoscope insertion portion (see reference numeral 51 in FIG. 16), which will be described later, can pass at the center. The tip cover 9 is attached to the first opening / closing unit 10 via, for example, a tip spring (see reference numeral 9b in FIG. 4) that 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 by a predetermined dimension.

  Reference numeral 40 denotes a pinching prevention member, which is formed of an elastomer such as a band-like elastic rubber or the like. The pinching prevention member 40 is slidably disposed with respect to the contact member 30 constituting the first opening / closing part group 11 and the second opening / closing part group 21, and the tip part which is one end side is screwed to the tip cover 9, Or it fixes by adhesion | attachment and the base end part which is the other end side is being fixed to the base end part structure frame 22 with the screw | thread or adhesion | attachment. Further, in this fixed state, the pinching prevention member 40 is in a state of being stretched with a predetermined tension without being loosened in the closed state.

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 configuration is obtained in which a fully opened state or the like in which all the opening / closing part sets are expanded is 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.
In addition, when the plurality of first opening / closing part sets 11 and the plurality of second opening / closing part sets 21 are in a fully opened state, the pinching prevention member 40 is extended and changed to a further stretched state.

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 drawing is referred to as one surface side, the lower side in the drawing is referred to as the other side, the left side in the drawing is referred to as the distal side, and the right side in the drawing is referred to as the proximal side.

As shown in FIG. 4, the interlocking opening / closing unit 2 includes a tip cover 9 to which a tip spring 9 b is integrally fixed, a tip portion constituting frame 2 f, a plurality of first opening / closing portion sets 11 and a unit body 12. The unit 10 includes a second opening / closing unit 20 including a plurality of second opening / closing portion sets 21 and a base end component constituting frame 22, and a plurality of pinching prevention members 40.
In the drawing, only one first opening / closing part set 11, second opening / closing part set 21, and pinching prevention member 40 are shown.

  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.

  The distal end configuration frame 2 f is a first annular member and is attached to the second opening / closing unit 20. The distal end component frame 2f is fixed integrally with the distal end side of a second assembly body 24, which will be described later, of the second opening / closing portion group 21, and is slidable with respect to the unit body 12 constituting the first opening / closing unit 10. Be placed.

The first opening / closing unit 10 includes a unit main body 12 and, for example, four first opening / closing section sets 11.
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. In this embodiment, it is an octagonal shape. That is, the unit main body 12 has, for example, eight planes 12p in the circumferential direction, which serve as arrangement portions for arranging the first opening / closing portion group 11 and the second opening / closing portion group 21 on the outer surface.
On the other hand, the shape of the inner hole 12a which is an axial through hole of the unit body 12 is circular. The inner diameter of the inner hole 12a is set to a dimension through which the endoscope insertion portion 51 can be inserted.

Of the eight planes 12p of the unit main body 12, the four planes 12p1 are first opening / closing unit assembly fixing planes (hereinafter abbreviated as first planes), and are arranged for fixing the first opening / closing unit group 11. It is a part. The other four planes 12p2 are second opening / closing part group placement planes (abbreviated as second planes), and the second opening / closing part group 21 is arranged. 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.

An abutting member 23 shown in FIG. 5 is fixed to the tip surface of the second flat surface 12p2 of the unit body 12. The abutting member 23 has a substantially rectangular parallelepiped shape, and sliding grooves 23d are formed on both side portions on one surface side. A sliding protrusion (see reference numeral 24ar in FIG. 13), which will be described later, is disposed in the sliding groove 23d. Further, the abutting member 23 is formed with a pin contact portion 23c. An abutting pin 39 (see FIG. 13), which will be described later, abuts on the pin abutting portion 23c.
Reference numeral 23p is a fixed surface. The abutting member 23 is integrally fixed by bonding, welding, soldering, or the like after the fixing surface 23p is arranged at a predetermined position on the second plane 12p2 of the unit body 12. ing.

The configuration of the first opening / closing part group 11 will be described with reference to FIGS.
As shown in FIGS. 6 and 8, the first opening / closing section set 11 is mainly composed of a first opening / closing section assembly body (hereinafter abbreviated as a first section assembly body) 14, a first opening / closing link mechanism section 15, and The first opening / closing holder 16 is provided. 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 37 denote connection pins, and reference numeral 38 denotes a fixing screw.

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

  As shown in FIGS. 6 and 7A, the contact member 30 is a member that comes into surface contact with a lumen wall or the like in the body, and is formed into a flat and elongated rectangular parallelepiped shape. The contact member 30 has a contact surface 30t on one surface side, and has a recessed space 30d between the distal end portion 30a and the base end portion 30b on the other surface side. A first opening / closing member 15a is disposed in the recessed space 30d.

  The contact surface 30t includes a flat surface portion 30p and an inclined surface portion 30s. A distal end side opening 30m1 and a distal end side screw head arrangement hole 30h are formed in the distal end portion 30a. On the other hand, the base end portion 30b is provided with a base end side opening 30m2 and a base end side screw head arrangement hole (not shown).

The distal end side opening 30m1 and the proximal end opening 30m2 are axial through holes that communicate with the recessed space 30d. A pinching prevention member 40 is disposed so as to be able to advance and retract in the distal end side opening 30m1, the gap 30d1 of the recessed space 30d in which the first opening / closing member 15a is disposed, and the proximal end opening 30m2. The distal end side opening 30m1 and the proximal end side opening 30m2 have curved surfaces 30c and 30e on which the pinching prevention member 40 is slidably disposed.
When the clearance 30d1 cannot be provided, the contact member 30 is provided with an axial through hole that communicates the distal end side opening 30m1 and the proximal end side opening 30m2, and the pinching prevention member 40 is advanced and retracted through the axial through hole. Arrange freely. A fixing screw 38 is disposed in the distal-side screw head arrangement hole 30h and the proximal-side screw head arrangement hole (not shown).

  The abutting member 30 is made of metal or resin having biocompatibility when the in-tube insertion device 1 is inserted into the body. 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.

The first opening / closing link mechanism 15 will be described with reference to FIGS. 6 and 7B to 7E.
The first opening / closing link mechanism section 15 is an opening / closing mechanism section, and includes a first opening / closing member 15a, a first opening / closing member distal end side connecting member (hereinafter abbreviated as a first connecting section) 15b, which is a first link member, A first opening / closing member base end side connecting member (hereinafter abbreviated as a first connecting plate) 15c, which is a second link member, and a slider 15d are mainly configured.

As shown in FIGS. 6 and 7B, the first opening / closing member 15a is a first opening / closing portion. The first opening / closing member 15a has a rectangular parallelepiped shape, and includes a main body portion 15a1 and a proximal end convex portion 15a2. The first opening / closing member 15 a is disposed in the recessed space 30 d of the contact member 30 and is fixed integrally with the contact member 30 by a fixing screw 38.
Reference numeral 15a1f denotes a female screw portion, which is provided at a predetermined position on the distal end side of the main body portion 15a1, and to which the fixing screw 38 is screwed. Reference numeral 15a2f denotes a female screw portion which is provided at a predetermined position of the base end convex portion 15a2 and is screwed with a fixing screw 38 (see FIG. 8).

The main body 15a1 is provided with a first long hole 15a3, a second long hole 15a4, and a recess 15a5 that are elongated in the axial direction.
The 1st long hole 15a3 is a through-hole which connects the exterior of one side, and the exterior of the other side. Reference numeral 15a6 denotes a side wall, which is opposed to the first long hole 15a3. A cam hole 15ac having a predetermined shape is formed in the side wall 15a6. The cam hole 15ac is a through hole that communicates the first elongated hole 15a3 with the outside. For example, the cam hole 15ac includes an inclined hole 15ac1 on the distal end side and a straight hole 15ac2 continuous to the inclined hole 15ac1. The inclination angle and length of the inclined hole 15ac1, the length of the straight hole 15ac2, and the like are appropriately set in consideration of the opening operation of the first opening / closing member 15a.
The cam hole 15ac is not limited to the combination of the inclined hole 15ac1 and the straight hole 15ac2, but may be a cam hole formed by a curve, a cam hole combining a curve and an inclined hole, or a straight hole, or the like. May be.

  A first protrusion 15b2 (described later) of the first connecting portion 15b is loosely disposed in the first long hole 15a3. In the pair of cam holes 15ac, respective end portions of sixth connecting pins 36 (see FIG. 8) described later are arranged. The width dimension of the cam hole 15ac is set to be larger than the diameter of the sixth connecting pin 36 by a predetermined dimension. The sixth connecting pin 36 freely slides in the cam hole 15ac.

The 2nd long hole 15a4 is a through-hole which connects the exterior of one surface side, and the exterior of the other surface side. The first opening / closing member fixing portion 15c5 of the first connecting plate 15c is disposed in the second long hole 15a4.
Reference numeral 15ah7 denotes a seventh connection pin fixing hole, which is a through hole in which the seventh connection pin 37 (see FIG. 8) is disposed. The longitudinal axis of the seventh connecting pin fixing hole 15ah7 and the longitudinal axis of the first opening / closing member 15a are orthogonal to each other when viewed from one side (hereinafter, abbreviated as orthogonal relation).

  The seventh connecting pin fixing hole 15ah7 is formed to be opposed to the second long hole 15a4. The length dimension of the seventh connecting pin 37 (see FIG. 8) is set to be substantially the same as or shorter than the width dimension of the main body portion 15a1.

  In the recess 15a5, a first main body 15b1, a first engaging portion 15b3, which will be described later, of the first connecting portion 15b, a first opening / closing holding portion 16, and a contact member opening / closing portion 15c3, which will be described later, of the first connecting plate 15c are provided. Arranged.

As shown in FIGS. 6 and 7C, the first connecting portion 15b includes a first connecting portion main body (hereinafter abbreviated as a first main body) 15b1, a first protrusion 15b2, and a first engaging portion 15b3. It is configured.
The first main body 15b1 includes an elongated hole 15b4 that is elongated in the axial direction. The long hole 15b4 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 15b4 are set to predetermined dimensions, and the width dimension is wider than the width dimension of the first connecting plate 15c.

  Reference numeral 15bh1 denotes a first connecting pin fixing hole. The first connecting pin fixing hole 15bh1 is a through hole in which the first connecting pin 31 (see FIG. 8) is disposed, and is formed to face the long hole 15b4. The longitudinal axis of the first connecting pin fixing hole 15bh1 is orthogonal to the longitudinal axis of the first connecting portion 15b. The first connecting pin 31 that constitutes the rotating shaft and the holding portion is inserted and disposed in the first connecting pin fixing hole 15bh1. The length dimension of the first connecting pin 31 is set to be substantially the same as the width dimension of the first connecting portion 15b or shorter than that by a predetermined dimension.

  The first protrusion 15b2 is provided so as to protrude from the distal end surface of the first main body 15b1. The width of the first protrusion 15b2 is smaller than the width of the first main body 15b1, and the first protrusion 15b2 is loosely disposed in the first long hole 15a3 of the first opening / closing member 15a. A slit 15b5 is formed on the distal end side of the first protrusion 15b2. The slit 15b5 is an adhesive reservoir in which an adhesive, solder, or the like is poured.

  Reference numeral 15bh6 is a sixth connecting pin fixing hole. The sixth connecting pin fixing hole 15bh6 is a through hole through which the sixth connecting pin 36 is inserted, and the longitudinal axis of the sixth connecting pin fixing hole 15bh6 and the longitudinal axis of the first connecting portion 15b are orthogonal to each other. The sixth connection pin 36 disposed in the sixth connection pin fixing hole 15bh6 is fixed to the first protrusion 15b2 by an adhesive or solder poured into the slit 15b5. The length dimension of the sixth connecting pin 36 is longer than the width dimension of the first protrusion 15b2, and is substantially the same as the width dimension method of the main body portion 15a1, or is set to a predetermined dimension and shorter than that.

  The first engaging portion 15b3 constitutes a proximal end portion of the first connecting portion 15b. A first tooth portion 15bg is formed in the first engagement portion 15b3. The first tooth portion 15bg corresponds to a gear portion of a ratchet mechanism that is one of the locking mechanism portions. The first tooth portion 15bg is configured such that a first notch portion 16an (to be described later) included in the first opening / closing holding portion 16 is engaged to obtain a locked state. The first tooth portion 15bg and the first notch portion 16an are first locking mechanism portions.

  On the other surface side of the first connecting portion 15b, a flat portion 15bp and a link convex portion 15b6 are provided. The flat surface portion 15bp on the first protrusion 15b2 side is disposed on a predetermined first assembly main body sliding portion 15c1 described later of the first connecting plate 15c. The link convex portion 15b6 is provided on the side surface opposite to the first tooth portion 15bg and constitutes the first engaging portion 15b3. The link convex part 15b6 is a convex part protruding in a predetermined dimension from the plane part 15bp. A fourth connection pin insertion hole 15bh4 through which the fourth connection pin 34 (see FIG. 8) is inserted is formed in the link convex portion 15b6. The longitudinal axis of the fourth connecting pin insertion hole 15bh4 and the longitudinal axis of the first connecting portion 15b are orthogonal to each other.

  As shown in FIGS. 6 and 7D, the first connecting plate 15c is an elongated plate member having a predetermined width dimension and formed in a predetermined shape. The first connecting plate 15c includes a first assembly main body sliding portion 15c1, a first main body engaging portion 15c2, and a contact member opening / closing portion 15c3 in order from the distal end side.

  The first subassembly main body sliding portion 15c1 includes a slider coupling portion 15c4 at the tip thereof. The slider connecting portion 15c4 has a second connecting pin insertion hole 15ch2 through which the second connecting pin 32 (see FIG. 8) is inserted. The slider connecting portion 15c4 is disposed in a long hole 15d3, which will be described later, of the slider 15d, and is configured to be rotatably connected to the slider 15d by a second connecting pin 32 constituting a rotation shaft. The longitudinal axis of the second connecting pin insertion hole 15ch2 and the longitudinal axis of the first connecting plate 15c are orthogonal to each other.

  On the other hand, the contact member opening / closing part 15c3 includes a first opening / closing member fixing part 15c5 at the base end. The first opening / closing member fixing portion 15c5 has a seventh connection pin insertion hole 15ch7 through which the seventh connection pin 37 is inserted. The first opening / closing member fixing portion 15c5 is disposed in the second elongated hole 15a4 of the main body portion 15a1, and is rotatably connected to the first opening / closing member 15a by a seventh connection pin insertion hole 15ch7 that constitutes a rotation shaft. It is configured. The longitudinal axis of the seventh connecting pin insertion hole 15ch7 and the longitudinal axis of the first connecting plate 15c are orthogonal to each other.

  The first main body engaging portion 15c2 is an inclined portion, and connects the first subassembly main body sliding portion 15c1 and the contact member opening / closing portion 15c3. The first main body engaging portion 15c2 has a first connection pin insertion hole 15ch1 through which the first connection pin 31 is inserted. The longitudinal axis of the first connecting pin insertion hole 15ch1 and the longitudinal axis of the first connecting plate 15c are orthogonal to each other.

The first main body engaging portion 15c2 is formed with a long hole 15c6 in which the hook portion 17f of the link spring 17 is disposed. The long hole 15c6 is a through hole that communicates the outside on the one surface side and the outside on the other surface side, and divides the first connecting pin insertion hole 15ch1. The length dimension and the width dimension of the long hole 15b4 are set to predetermined dimensions, and the width dimension is larger than the line length of the spring 17.
The inclination angle and length of the first main body engaging portion 15c2 are appropriately set in consideration of the opening operation of the first opening / closing member 15a.

As shown in FIGS. 6 and 7E, the slider 15d is a first sliding body, and includes a sliding portion 15d1, a pair of engaging protrusions 15d2, and a long hole 15d3.
The sliding portion 15d1 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 15d1 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 15d1 is a sliding surface 15dp, and is disposed on the first plane 12p1.

  The engaging protrusion 15d2 is a pair of convex portions provided to face the base end side portion of the sliding portion 15d1. The engaging protrusion 15d2 protrudes from the upper surface 15du, which is one surface of the sliding portion 15d1, by a predetermined dimension. According to this configuration, the slider 15d is disposed in a state where the side surface of the first subassembly main body 14 is sandwiched between the pair of engaging protrusions 15d2. In this arrangement state, the slider 15d is slidable along the first assembly body 14. Note that the distal end surface of the engaging protrusion 15d2 is configured as an abutting surface with which the proximal end surface of the distal end configuration frame 2f abuts.

  The long hole 15d3 is formed in the sliding portion 15d1. The long hole 15d3 is a through hole that communicates the outside on the upper surface 15du side of the sliding portion 15d1 and the outside on the sliding surface 15dp side. In the long hole 15d3, a slider connecting portion 15c4 constituting the first connecting plate 15c is disposed. The length dimension and the width dimension of the long hole 15d3 are set to predetermined dimensions, and the width dimension is wider than the width dimension of the first connecting plate 15c.

  Reference numeral 15dh2 is a second connecting pin fixing hole. The second connecting pin fixing hole 15dh2 is a through-hole through which the second connecting pin 32 is inserted, and is formed so as to face the long hole 15d3. The longitudinal axis of the second connecting pin fixing hole 15dh2 and the longitudinal axis of the slider 15d are orthogonal to each other. The second connecting pin 32 is inserted into the second connecting pin fixing hole 15dh2. The length dimension of the second connecting pin 32 is set to be substantially the same as the width dimension of the sliding portion 15d1, or shorter than that by a predetermined dimension.

As shown in FIGS. 6 and 7F, 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 connecting part 15b. The holding portion main body 16a includes a first locking portion 16a1 formed of an inclined surface on the tip surface. The first locking portion 16a1 includes a first notch portion 16an. The 1st notch part 16an is corresponded to the latching claw of a ratchet mechanism, and the tooth part which meshes with the 1st tooth part 15bg of the 1st connection part 15b is 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 side portion 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 (see FIG. 8) 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.

  As shown in FIGS. 6 and 7G, the first subassembly main body 14 is a fixed member and 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 subassembly main body 14 includes a cutout groove 14b, a first long hole 14c, a second long hole 14d, a spring hole 14e, a cutout 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 distance set in advance from the front end surface of the first subassembly main body 14 and with a width dimension and a depth dimension set in advance from a position away from each other. A sliding portion 15d1 of the slider 15d is slidably disposed in the cutout groove 14b. Therefore, the depth dimension of the notch groove 14b is set larger in advance than the thickness dimension of the sliding portion 15d1. Reference numeral 14be denotes a proximal-side rising surface.

  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.

  In the first communication hole 14c1, a first assembly main body sliding portion 15c1 of the first connecting plate 15c is disposed. On the other hand, the second communication hole 14 c 2 forms a hook arrangement space, and the hook portion 17 f formed at the proximal end portion of the link spring 17 is arranged. The width dimension of the first long hole 14c is set to be a predetermined dimension and a wider width than the width dimension of the first connecting plate 15c and the outer shape of the link spring 17.

  In the present embodiment, the sliding portion 15d1 of the slider 15d, the first assembly main body sliding portion 15c1 of the first connecting plate 15c, and the link spring 17 are predetermined in the notch groove 14b including the first long hole 14c. It is configured to be accommodated in a state.

  The second long hole 14d is provided at a second position on the base end side 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.

In the second long hole 14d, the first engaging portion 15b3 of the first connecting portion 15b and the convex portion 16c of the first opening / closing holding portion 16 are arranged. The width of the second long hole 14d is set wider than the width of the first engagement portion 15b3 and the outer dimension of the convex portion 16c.
The spring hole 14e is a hole in which the other end side portion of the holding portion 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 third connection pin fixing hole 14h3 is a through hole through which the third connection pin 33 (see FIG. 8) is inserted, and is formed to be opposed to 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 assembly of the first opening / closing part group 11 will be described with reference to FIG.
The first opening / closing part assembly 11 is assembled through the following first opening / closing part assembly process.
The first opening / closing part assembly process includes a connecting plate connecting part assembling process, a first connecting plate tip part assembling process, a link spring assembling process, a connecting part base end assembling process, an opening / closing holding part assembling process, It includes a connecting plate base end assembly step, a connecting portion tip end assembly step, and a contact member assembly step. The order in which the first opening / closing part group 11 is assembled is not limited to the order described above, and is set as appropriate.

Hereinafter, each assembly process will be described.
The connecting plate connecting part assembling step will be described.
The connecting plate connecting portion assembling step is a step of assembling the first connecting portion 15b and the first connecting plate 15c in an X shape so as to be rotatable.

  The operator first combines the first connecting portion 15b, the first connecting plate 15c and the first connecting plate 15c in an X shape, so that the first opening / closing member fixing portion 15c5 side of the first connecting plate 15c is first connected as indicated by an arrow A1, for example. It inserts in the long hole 15b4 of the part 15b. Then, the operator places the first main body engaging portion 15c2 in the long hole 15b4, and places one of the hook portions 17f of the link spring 17 in the long hole 15c6 of the first connecting plate 15c as indicated by an arrow A2. To do.

  Next, the operator places the first connecting pin 31 as shown by an arrow A3, the first connecting pin fixing hole 15bh1 of the first connecting portion 15b, the first connecting pin insertion hole 15ch1 of the first connecting plate 15c, the link spring. 17 hook portions 17f, first connection pin insertion holes 15ch1, and first connection pin fixing holes 15bh1 are inserted in this order. Thus, the first connecting portion 15b and the first connecting plate 15c are temporarily assembled in an X shape via the first connecting pin 31.

  Next, the operator applies an adhesive to each first connection pin fixing hole 15bh1 of the first connection portion 15b or connects each end portion of the first connection pin 31 to the first connection portion by means such as welding. It fixes to 15b integrally.

Thus, the first main body engaging portion 15c2 of the first connecting plate 15c is attached to be rotatable about the first connecting pin 31 provided in the elongated hole 15b4 of the first connecting portion 15b. The hook portion 17 f of the link spring 17 is hooked on the first connecting pin 31.
In the following description, the operation of fixing the pin to the hole by applying the above-described adhesive or by means such as welding is referred to as a pin fixing operation.

A 1st connection board front-end | tip part assembly | attachment process is demonstrated.
The first connecting plate tip portion assembling step is a step of rotatably attaching the slider connecting portion 15c4 of the first connecting plate 15c to the slider 15d.

The operator first places the slider connecting portion 15c4 of the first connecting plate 15c through the first long hole 14c of the first assembly body 14 as shown by the arrow A4 and arranges it in the long hole 15d3 of the slider 15d. .
Next, the operator connects the second connecting pin 32 to the second connecting pin fixing hole 15dh2 of the slider 15d, the second connecting pin insertion hole 15ch2 of the first connecting plate 15c, and the second connecting pin fixing hole as shown by the arrow A5. It is inserted in the order of 15 dh2. Thereafter, the operator performs a pin fixing operation to integrally fix each end of the second connecting pin 32 to the slider 15d.
Accordingly, the slider connecting portion 15c4 of the first connecting plate 15c is attached to be rotatable about the second connecting pin 32 provided in the long hole 15d3 of the slider 15d.
In addition, you may make it perform a 1st connection board front-end | tip part assembly | attachment process before the said connection board connection part assembly | attachment process.

The link spring assembly process will be described.
The link spring assembling step is a step of assembling the other hook portion 17 f of the link spring 17 to the first subassembly main body 14.
First, the worker arranges the hook portion 17f of the link spring 17 in the second communication hole 14c2 as indicated by an arrow A6.

Next, the operator inserts the third connecting pin 33 in the order of the third connecting pin fixing hole 14h3, the hook portion 17f, and the third connecting pin fixing hole 14h3 of the first assembly body 14 as indicated by an arrow A7. Thereafter, the operator performs a pin fixing operation to integrally fix each end portion of the third connecting pin 33 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 previously arranged in the long hole 15c6 and the second communication hole 14c2. However, when a predetermined gap is provided in the hook portion 17f, the operator fixes the connection pins 31 and 33 to the first connection portion 15b and the first assembly body 14 respectively, and then the link spring 17 You may make it hook the hook part 17f on the connection pins 31 and 33 via the long hole 15c6 and the 2nd communicating hole 14c2.

A connection part base end part assembly | attachment process is demonstrated.
The connecting portion base end portion assembly step is a step in which the first engaging portion 15b3 of the first connecting portion 15b is rotatably assembled to the first assembly body 14.

The operator first inserts the first engagement portion 15b3 into the second long hole 14d as indicated by the arrow A8.
Next, the worker arranges the first engaging portion 15b3 on the distal end side of the second long hole 14d, and fixes the fourth connecting pin 34 of the first subassembly main body 14 as indicated by the arrow A9. The hole 14h4, the fourth connecting pin insertion hole 15bh4 of the first connecting portion 15b, and the fourth connecting pin fixing hole 14h4 are inserted in this order. Thereafter, the operator performs a pin fixing operation to integrally fix each end portion of the fourth connecting pin 34 to the first subassembly main body 14.
Thus, the first connecting portion 15b is attached to be rotatable about the fourth connecting pin 34 provided on the first assembly body 14.

The opening / closing holder assembly process 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.

The operator inserts the convex portion 16c of the first opening / closing holding portion 16 into the second long hole 14d as indicated by an arrow A10. At this time, the operator arranges the other end side portion of the holding portion spring 18 in the spring hole 14e in advance as indicated by an arrow A11.
That is, the operator inserts the convex portion 16c into the second long hole 14d in a state where the holding portion spring 18 is disposed in the spring hole 14e. 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. Thus, the convex portion 16c is disposed on the proximal end side in the second long hole 14d.

  Here, the operator pushes the convex portion 16 c into the second long hole 14 d against the urging force of the holding portion spring 18. Then, the operator locks the first notch portion 16an of the first locking portion 16a1 in a predetermined locking state with respect to the first tooth portion 15bg of the first engaging portion 15b3.

While holding the locked state, the operator holds the fifth connecting pin 35 in the fifth connecting pin fixing hole 14h5 of the first subassembly main body 14 and the fifth connecting pin of the first opening / closing holding portion 16 as indicated by an arrow A12. The insertion hole 16ch5 and the fifth connecting pin fixing hole 14h5 are inserted in this order.
Thereafter, the operator performs a pin fixing operation to integrally fix each end portion of the fifth connecting pin 35 to the first subassembly main body 14.

  As a result, the first opening / closing holding part 16 is attached so as to be rotatable around the fifth connecting pin 35 of the first assembly body 14. In this attached state, since the holding portion spring 18 is located on the proximal side from the convex portion 16 c, the first locking portion 16 a 1 is moved to the first engaging portion 15 b 3 side by the biasing force of the holding portion spring 18. The first notch portion 16an is engaged with the first tooth portion 15bg.

  In the present embodiment, the shapes of the first notch portion 16an and the first tooth portion 15bg are as shown in FIGS. 9A to 9E with the first connecting portion 15b centering on the fourth connecting pin 34 in the engaged state. In the figure, the first connecting portion 15b is shaped so as to be able to rotate clockwise and stand up while preventing the counterclockwise rotation from the upper direction to the counterclockwise direction and maintaining the open state. Yes.

  Moreover, in the above-mentioned, the case where an opening / closing holding | maintenance part assembly | attachment process is performed after a connection part base end part assembly | attachment process is demonstrated. However, you may make it perform an opening-and-closing holding | maintenance part assembly | attachment process before a connection part base end part assembly | attachment process. In this case, the operation of locking the first tooth portion 15bg to the first notch portion 16an is performed in the connecting portion base end portion assembly step.

The connecting plate base end assembly process will be described.
The connecting plate base end assembly step is a step of assembling the base end portion of the first connecting plate 15c to the first opening / closing member 15a so as to be rotatable.
The operator first places the first opening / closing member fixing portion 15c5 of the first connecting plate 15c in the second long hole 15a4 of the first opening / closing member 15a as indicated by an arrow A13.

Next, the operator connects the seventh connection pin 37 to the seventh connection pin fixing hole 15ah7 of the first opening / closing member 15a, the seventh connection pin insertion hole 15ch7 of the first connection plate 15c, and the seventh connection as shown by the arrow A14. The pin fixing holes 15ah7 are inserted in this order. Thereafter, the operator performs a pin fixing operation to integrally fix each end portion of the seventh connecting pin 37 to the first opening / closing 15a.
Thus, the base end portion of the first connecting plate 15c is attached to be rotatable about the seventh connecting pin 37 provided in the elongated hole 15a4 of the first opening / closing member 15a.

  In the above-described process, since the link spring 17 is attached to the first assembly body 14 and the first connecting plate 15c in advance, the urging force of the spring 17 may hinder the work. For this reason, you may make it perform a connection board base end part assembly | attachment process before a connection board connection part assembly process.

A connection part tip part assembly process will be described.
The connecting portion tip portion assembly step is a step of assembling the tip portion of the first protrusion 15b2 of the first connecting portion 15b to the cam hole 15ac of the first opening / closing member 15a.
The worker first places the first protrusion 15b2 of the first connecting portion 15b in the first long hole 15a3 of the first opening / closing member 15a as indicated by an arrow A15.

Next, the operator connects the sixth connecting pin 36 to the cam hole 15ac of the first opening / closing member 15a, the sixth connecting pin fixing hole 15bh6 of the first connecting portion 15b, the slit 15b5, the sixth connecting pin as shown by the arrow A16. The fixing hole 15bh6 and the cam hole 15ac are inserted in this order. Thereafter, the operator applies an adhesive to the slit 15b5 or fixes the central portion of the sixth connecting pin 36 to the first connecting portion 15b integrally by means such as welding.
Thus, the first protrusion 15b2 of the first connecting portion 15b is slidably attached to the cam hole 15ac of the first opening / closing member 15a.

Finally, the contact member assembling process will be described.
The contact member assembling step is a step of integrally assembling the contact member 30 and the first opening / closing member 15a.
The operator first puts the contact member 30 on the first opening / closing member 15a as indicated by an arrow A17. That is, the first opening / closing member 15 a is housed in the recessed space 30 d of the contact member 30.
Next, the operator arranges the washer 38a in the screw head arrangement hole 30h on the distal end side and the screw head arrangement hole (not shown) on the proximal end side as indicated by an arrow A18. Thereafter, the fixing screw 38 is screwed into the female screw portions 15a1f and 15a2f of the first opening / closing member 15a through the opening of the washer 38a and the opening of the screw head arrangement hole 30h.
Thus, the contact member 30 is integrally fixed to a predetermined position of the first opening / closing member 15a.

The first opening / closing section assembly 11 assembled through the first opening / closing section assembly process described above is fixed to the first plane 12p1 of the unit body 12 as shown in FIG. 9A.
In FIGS. 9A to 9E, the contact member 30 is not fixed to the first opening / closing member 15a so that the sixth connecting pin 36 sliding in the cam hole 15ac can be explained.

  In the closed state in which the first opening / closing member 15a of the first opening / closing part group 11 is closest to the first part body 14, the tip surface of the sliding part 15d1 of the slider 15d is close to the rising surface on the tip side of the notch groove 14b. Alternatively, they are arranged in contact with each other. When the first opening / closing member 15a is in the closed state, the first connecting portion 15b and the first connecting plate 15c are accommodated so as to lie in the space of the first long hole 15a3 and the recess 15a5 of the first opening / closing member 15a. .

  The first opening / closing member 15a moves from the closed state shown in FIG. 9A to the first assembly main body 14 as shown in FIGS. 9B to 9D as the slider 15d moves toward the proximal end rising surface 14be of the cutout groove 14b. It is configured to gradually open and change to the open state, and to reach a predetermined maximum open state as shown in FIG. 9E.

Specifically, the slider 15d moves in the proximal direction along the first subassembly main body 14 in the notch groove 14b in the order of FIG. 9B,.
When the slider 15d moves as shown in FIG. 9B, the first connecting plate 15c rotates counterclockwise around the second connecting pin 32, and the first opening / closing member fixing portion 15c5 side is gradually raised. Go.

In addition, since the first connecting portion 15 b and the first connecting plate 15 c are rotatably connected by the first connecting pin 31, the first connecting portion 15 b is resisted against the urging force of the link spring 17. It rotates in the clockwise direction in the figure around the four connecting pins 34.
Then, the sixth connecting pin 36 fixed to the first connecting portion 15b moves in the inclined hole 15ac1 of the cam hole 15ac toward the base end side. As a result, the first opening / closing member 15a is separated from the first subassembly main body 14 with the angle θ being inclined forward.

In the present embodiment, the first opening / closing member 15a, the first connecting portion 15b, the first connecting plate 15c, and the slider 15d constituting the first opening / closing link mechanism portion 15 are formed in a predetermined shape as described above. In addition, since each of the connecting pins 31-37 is fixed at a predetermined position, the first opening / closing member 15a is separated from the first subassembly main body 14 in a state where the distance L2 is larger than the distance L1.
The distance L1 is, for example, the distance from the first plane 12p1 to the tip of the first opening / closing member 15a, and the distance L2 is the distance from the first plane 12p1 to the base end of the first opening / closing member 15a.

  As shown in FIGS. 9C and 9D, when the slider 15d further moves in the proximal direction, the sixth coupling pin 36 fixed to the first coupling portion 15b moves within the straight hole 15ac2 of the cam hole 15ac. Move towards the side. As a result, the angle θ is further increased, that is, the first opening / closing member 15a is separated from the first assembly body 14 while gradually increasing the distance between the distance L2 and the distance L1.

  As shown in FIG. 9E, the base end surface of the sliding portion 15d1 of the slider 15d is disposed close to or in contact with the base end side rising surface 14be of the notch groove 14b, whereby the first opening / closing member 15a is The maximum open state is achieved by separating the part set body 14 from the maximum.

  When the first connecting portion 15b rises clockwise around the fourth connecting pin 34, the engagement state between the first tooth portion 15bg and the first notch portion 16an changes for each tooth. To do. Therefore, the first opening / closing member 15a is gradually switched from the closed state to the open state with the movement of the slider 15d toward the proximal end.

  The first connecting portion 15b is restricted from rotating counterclockwise around the fourth connecting pin 34 by engaging the first notch portion 16an with the first tooth portion 15bg. For this reason, the first opening / closing member 15a is held, for example, in the maximum open state corresponding to the moving distance of the slider 15d, or in the open state in which the sliding portion 15d1 is located in the middle of the notch groove 14b.

  The first opening / closing member 15a in the open state returns to the closed state when the engagement state between the first tooth portion 15bg and the first notch portion 16an is released against the biasing force of the holding portion spring 18. To do. When the engaged state is released, the first connecting plate 15 c rotates clockwise around the first connecting pin 31 by the urging force of the link spring 17. Then, the slider 15d is moved to the front end side, and the first connecting portion 15b and the first connecting plate 15c are again accommodated in the space of the first long hole 15a3 and the recessed portion 15a5 of the first opening / closing member 15a. 15a is closed.

The second opening / closing unit 20 includes a base end configuration frame 22 and, for example, four second opening / closing portion sets 21.
As shown in FIG. 10, the base end configuration 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 FIGS. 11 to 13.
In addition, the same code | symbol is attached | subjected to the same member as the 1st opening / closing part group 11, and description is abbreviate | omitted.
As shown in FIGS. 11 and 13, the second opening / closing part set 21 mainly includes a second opening / closing part set body (hereinafter abbreviated as a second part set body) 24, a second opening / closing link mechanism part 25, and The second opening / closing holding portion 26, the abutting pin 39, the link spring 17, the holding portion spring 18, the contact member 30, the connecting pins 31, 33-37, and the fixing screw 38 are configured.

  And in the 2nd opening-and-closing part group 21, the 2nd opening-and-closing link mechanism part 25 which is an opening-and-closing mechanism part is the 2nd opening-and-closing member 25a and the 2nd opening-and-closing member tip side connection member (henceforth 2nd). It is mainly comprised by the 2nd opening-and-closing member base end side connection member (henceforth the 2nd connection board 25c and the abutting pin 39) which is a 2nd link member.

In the present embodiment, the second opening / closing member 25a of the second opening / closing link mechanism 25 and the first opening / closing member 15a of the first opening / closing link mechanism 15 are the same member. Moreover, the 2nd connection part 25b of the 2nd opening / closing link mechanism part 25 and the 1st connection part 15b of the 1st opening / closing link mechanism part 15 are the same members. The second connecting plate 25c of the second opening / closing link mechanism 25 and the first connecting plate 15c of the first opening / closing link mechanism 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.

  As described above, the second opening / closing member 25a and the first opening / closing member 15a are the same member, but the distinction 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 is made. For the sake of clarity, the second opening / closing member for the second opening / closing part group 21 is given a reference numeral 25a to make it distinguishable from the first opening / closing member 15a. Similarly, the second connecting portion is denoted by reference numeral 25b so that it can be distinguished from the first connecting portion 15b. Similarly, the second connecting plate is denoted by reference numeral 25c so that it can be distinguished from the first connecting plate 15c. Similarly, the second opening / closing holding portion is denoted by reference numeral 26 so that it can be distinguished from the first opening / closing holding portion 16.

  The second opening / closing member 25a has the same configuration as that of the first opening / closing member 15a. As shown in FIGS. 11 and 12A, the main body 25a1, the base end protrusion 25a2, the first long hole 25a3, and the second long hole 25a4. , A recess 25a5, a side wall 25a6, a female screw portion 25a1f, a female screw portion 25a2f, a cam hole 25ac, an inclined hole 25ac1, a straight hole 25ac2, and a seventh connecting pin fixing hole 25ah7. The first long hole 25a3 is provided at the first position of the second opening / closing member 25a, and the second long hole 25a4 is provided at the second position.

    The second connecting portion 25b has the same configuration as the first connecting portion 15b. As shown in FIGS. 11 and 12B, the first main body 25b1, the first protrusion 25b2, the first engaging portion 25b3, the long hole 25b4, and the slit. 25b5, link convex part 25b6, 1st tooth | gear part 25bg, plane part 25bp, 4th connection pin insertion hole 25bh4, and 6th connection pin fixing hole 25bh6 are comprised.

  On the other hand, as shown in FIGS. 11 and 12C, the second connecting plate 25c includes an abutting pin fixing hole 25ch9 to which the abutting pin 39 is fixed, instead of the second connecting pin insertion hole 15ch2. Has been. Reference numeral 25c4 denotes an abutting pin connecting portion, and an abutting pin fixing hole 25ch9 is formed. Other configurations are the same as those of the first connecting plate 15c, and the first assembly main body sliding portion 25c1, the first main body engaging portion 25c2, the abutting member opening / closing portion 25c3, the long hole 25c6, and the seventh connecting pin insertion hole. 25ch7.

  The abutting pin 39 is a second sliding body and is fixed to the abutting pin fixing hole 25ch9. The length dimension of the abutting pin 39 is set so that both end portions thereof protrude from the side surface of the second connecting plate 25c by a predetermined length.

  The second open / close holding portion 26 has the same configuration as the first open / close holding portion 16 and includes a holding portion main body 26a, a pair of blade members 26b, and a convex portion 26c as shown in FIGS. 11 and 12D. It is configured. 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 26b is arranged so as to be in a positional relationship in contact with the blade member 16b of the first subassembly main body 14 fixed to the first plane 12p1 of the unit main body 12.
A fifth connecting pin insertion hole 26ch5 is formed in the convex portion 26c.

  As shown in FIG. 11 and FIG. 12E, the second part body 24 that is a fixing member has a shape different from that of the first part body 14. The second assembly main body 24 is a crank-shaped prismatic member, and includes a distal end portion 24a1, a bent portion 24a2, and a proximal end portion 24a3. 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. I have.

  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 first notch 24ap (hereinafter referred to as a first notch) that forms a space in which the abutting pin 39 is disposed is formed at the first position on the tip of the sliding surface of the tip 24a1. .

  The length dimension of the first notch 24ap is set in consideration of the moving distance of the abutting pin 39. On the other hand, the depth dimension of the first notch 24ap is set in consideration of the thickness dimension of the second connecting plate 25c and the diameter of the abutting pin 39. Reference numeral 24ae denotes a proximal-side rising surface, which is a surface on which the abutting pin 39 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 plate 25c 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 plate 25c and the outer shape of the link spring 17.

  In the present embodiment, the second connecting plate 25c and the link spring 17 to which the abutting pin 39 is fixed are configured to be accommodated in a predetermined state in the first long hole 24c and the first notch 24ap. ing.

  The second long hole 24d is provided at a second position 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.

  In the second long hole 24d, the second engaging portion 25b3 of the second connecting portion 25b and the convex portion 26c of the first opening / closing holding portion 26 are arranged. The width dimension of the second long hole 24d is set wider than the width dimension of the second engaging portion 25b3 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 that is disposed on the fixed surface 22 p 1 of the base end component constituting frame 22. The second assembly body 24 is configured to be integrally fixed to the base end component frame 22 by joining the joint surface of the second notch portion 24f to the fixed surface 22p1, for example, by welding. Reference numeral 24h denotes a screw head arrangement hole.

The assembly of the second opening / closing part group 21 will be described with reference to FIG.
The 2nd opening-and-closing part group 21 is assembled through the 2nd opening-and-closing part assembly | attachment process shown below.
The second opening / closing part assembly process includes the connecting plate connecting part assembly process described in the first opening / closing part assembly process, the link spring assembly process, the connection part base end assembly process, the opening / closing holding part assembly process, A connecting plate base end assembly step, a connecting portion tip end assembly step, and a contact member assembly step, and a second connecting plate tip end assembly step which is an assembling step specific to the second opening / closing portion set 21; Is included.

  Here, in the second opening / closing portion assembly step, the connecting plate connecting portion assembly step, the link spring assembly step, the connecting portion base end portion mounting step, and the opening / closing holding portion described in the first opening / closing portion assembly step The assembly process, the connecting plate base end assembly process, the connecting section tip assembly process, and the contact member assembly process will be briefly described.

The connecting plate connecting part assembling step will be described.
The connecting plate connecting portion assembling step is a step of assembling the second connecting portion 25b and the second connecting plate 25c in an X shape so as to be rotatable.

  First, for example, the operator inserts the second opening / closing member fixing portion 25c5 side of the second connecting plate 25c into the long hole 25b4 of the second connecting portion 25b as indicated by an arrow A1. Then, the second main body engaging portion 25c2 is disposed in the long hole 25b4, and one of the hook portions 17f of the link spring 17 is disposed in the long hole 25c6 of the second connecting plate 25c as indicated by an arrow A2.

  Next, the operator connects the first connection pin 31 to the first connection pin fixing hole 25bh1 of the second connection portion 25b, the first connection pin insertion hole 25ch1 of the second connection plate 25c, and the link spring as indicated by the arrow A3. The 17th hook part 17f, the 1st connecting pin insertion hole 25ch1, and the 1st connecting pin fixing hole 25bh1 are inserted in order, and the 2nd connecting part 25b and the 2nd connecting plate 25c are temporarily assembled in X shape. Thereafter, the operator integrally fixes each end of the first connecting pin 31 to the second connecting portion 25b by a pin fixing operation.

  Thus, the second main body engaging portion 25c2 of the second connecting plate 25c is attached to be rotatable about the first connecting pin 31 provided in the long hole 25b4 of the second connecting portion 25b. The hook portion 17 f of the link spring 17 is hooked on the first connecting pin 31.

The link spring assembly process will be described.
The link spring assembly step is a step of assembling the other hook portion 17 f of the link spring 17 to the second assembly body 24.
First, the worker places the hook portion 17f of the link spring 17 in the second communication hole 24c2 as indicated by an arrow A6.

Next, 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 A7. Thereafter, the operator performs a pin fixing operation to integrally fix each end of the third connecting pin 33 to the second assembly main body 24.
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.

A connection part base end part assembly | attachment process is demonstrated.
The connecting portion base end assembly step is a step in which the second engaging portion 25b3 of the second connecting portion 25b is rotatably assembled to the second assembly body 24.
The operator first inserts the second engagement portion 25b3 into the second long hole 24d as indicated by an arrow A8. Place on the tip side.

Next, an operator arrange | positions the 2nd engaging part 25b3 in the front end side of the 2nd long hole 24d, and fixes the 4th connecting pin 34 of the 2nd assembly main body 24 as shown by arrow A9. The hole 24h4, the fourth connecting pin insertion hole 25bh4 of the second connecting portion 25b, and the fourth connecting pin fixing hole 24h4 are inserted in this order. Thereafter, the operator performs a pin fixing operation to integrally fix each end portion of the fourth connecting pin 34 to the second subassembly main body 24.
Thus, the second connecting portion 25b is attached to be rotatable about the fourth connecting pin 34 provided on the second assembly body 24.

The opening / closing holder assembly process will be described.
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.

The operator inserts the convex portion 26c of the second opening / closing holding portion 26 into the second long hole 24d as indicated by an arrow A10. At this time, the operator previously arranges the other end of the holding portion spring 18 in the spring hole 24e as indicated by an arrow A11.
That is, the operator inserts the convex portion 26c into the second long hole 24d in a state where the holding portion spring 18 is disposed in the spring hole 24e. 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. Thus, the convex portion 26c is arranged on the proximal end side in the second long hole 24d.

Here, the operator pushes the convex portion 26c into the second long hole 24d, and locks the second notch portion 26an to the second tooth portion 25bg in a predetermined locking state. Then, the operator holds the locked state, and the fifth connecting pin 35 is connected to the fifth connecting pin fixing hole 24h5 of the second assembly body 24 and the fifth opening / closing holding portion 26 as shown by the arrow A12. The connecting pin insertion hole 26ch5 and the fifth connecting pin fixing hole 24h5 are inserted in this order.
Thereafter, the operator performs a pin fixing operation to integrally fix each end of the fifth connecting pin 35 to the second assembly main body 24.

As a result, the second opening / closing holding part 26 is attached to be rotatable about the fifth connecting pin 35 of the second assembly body 24.
The connecting plate base end assembly process will be described.
The connecting plate base end assembly step is a step of rotatably mounting the base end portion of the second connecting plate 25c to the second opening / closing member 25a.
The operator first places the second opening / closing member fixing portion 25c5 of the second connecting plate 25c in the second long hole 25a4 of the second opening / closing member 25a as indicated by an arrow A13.

Next, the operator connects the seventh connecting pin 37 to the seventh connecting pin fixing hole 25ah7 of the second opening / closing member 25a, the seventh connecting pin insertion hole 25ch7 of the second connecting plate 25c, and the seventh connection as shown by the arrow A14. The pin fixing holes 25ah7 are inserted in this order. Thereafter, the operator performs a pin fixing operation to integrally fix each end of the seventh connecting pin 37 to the second opening / closing member 25a.
Thus, the base end portion of the second connecting plate 25c is attached to be rotatable about the seventh connecting pin 37 provided in the elongated hole 15a4 of the second opening / closing member 25a.

A connection part tip part assembly process will be described.
The connecting portion tip portion assembly step is a step of assembling the tip portion of the second protrusion 25b2 of the second connecting portion 25b to the cam hole 25ac of the second opening / closing member 25a.
The worker first places the second protrusion 25b2 of the second connecting portion 25b in the first long hole 25a3 of the second opening / closing member 25a as indicated by an arrow A15.

Next, the operator connects the sixth connecting pin 36 to the cam hole 25ac of the second opening / closing member 25a, the sixth connecting pin fixing hole 25bh6 of the second connecting portion 25b, the slit 25b5, the sixth connecting pin as shown by an arrow A16. The fixing hole 25bh7 and the cam hole 25ac are inserted in this order. Thereafter, the operator applies an adhesive to the slit 25b5 or fixes the central portion of the sixth connecting pin 36 to the second connecting portion 25b integrally by means such as welding.
Thus, the second protrusion 25b2 of the second connecting portion 25b is slidably attached to the cam hole 25ac of the second opening / closing member 25a.

The contact member assembling 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.
The worker first places the contact member 30 on the second opening / closing member 25a as indicated by an arrow A17. That is, the second opening / closing member 25 a is housed in the recessed space 30 d of the contact member 30.

Next, the operator arranges the washer 38a in the screw head arrangement hole 30h and the base end side stepped hole (not shown) as indicated by an arrow A18. Thereafter, the fixing screw 38 is screwed into the female screw portions 25a1f and 25a2f of the second opening / closing member 25a through the opening of the washer 38a and the opening of the screw head arrangement hole 30h.
Thereby, the contact member 30 is integrally fixed to a predetermined position of the second opening / closing member 25a.

Finally, the second connecting plate tip part assembling process, which is an assembling process peculiar to the second opening / closing part group 21, will be described.
The second connecting plate tip portion assembling step is a step of assembling the abutting pin 39 into the abutting pin fixing hole 25ch9 formed in the abutting pin coupling portion 25c4.
When the worker starts the second connecting plate tip portion assembly step after the connecting plate connecting portion assembly step described above, the abutting pin connecting portion 25c4 of the second connecting plate 25c is shown in the second part as indicated by an arrow A4. The first long hole 24c of the assembly body 24 is passed. And an operator arrange | positions the abutting pin connection part 25c4 in the 1st notch part 24ap side.

  Next, the operator inserts the abutting pin 39 into the abutting pin fixing hole 25ch9 of the abutting pin connecting portion 25c4 indicated by a broken line arranged on the first notch portion 24ap side as indicated by an arrow A5. Then, the operator causes both end portions of the abutting pin 39 to protrude from the side surface of the second connecting plate 25c substantially evenly. Thereafter, the operator performs pin fixing work to integrally fix the abutting pin 39 to the second connecting plate 25c.

Accordingly, the abutting pin 39 fixed to the abutting pin coupling portion 25c4 of the second coupling plate 25c is disposed on the first notch portion 24ap side, and the tip of the second coupling plate 25c is the first notch portion. It is slidably disposed at a predetermined position on the part 24ap side.
In addition, you may make it perform a 2nd connection board front-end | tip part assembly | attachment process before the said connection board connection part assembly | attachment process.

The second opening / closing part assembly 21 assembled through the above-described second opening / closing part assembly step is fixed to the fixing surface 22p1 of the base end component frame 22 as shown in FIG. 14A.
14A to 14E, the contact member 30 is not fixed to the second opening / closing member 25a so that the sixth connection pin 36 sliding in the cam hole 25ac can be described.

  In the closed state in which the second opening / closing member 25a of the second opening / closing part group 21 is closest to the second part body 24, the abutting pin 39 provided on the second connecting plate 25c is preliminarily provided in the first notch part 24ap. It is arranged at a predetermined position. Further, when the second opening / closing member 25a is in the closed state, the second connecting portion 25b and the second connecting plate 25c are disposed so as to lie on the fixed surface 22p1.

  As the second opening / closing member 25a moves toward the rising surface 24ae of the cutout portion 24ap of the abutting pin 39, the second opening / closing member 25a gradually moves from the second assembly body 24 as shown in FIGS. 14B to 14D from the closed state shown in FIG. 14A. And is changed to an open state, and is configured to be in a predetermined maximum open state as shown in FIG. 14E.

Specifically, the abutting pin 39 moves in the base end direction along the second assembly main body 24 in the notch 24ap in the order of FIG. 14B,.
When the abutting pin 39 moves as shown in FIG. 14B, the second connecting plate 25c rotates about the abutting pin 39 in the counterclockwise direction in the figure, and the second opening / closing member fixing portion 25c5 side is gradually raised. To go.

Further, since the second connecting portion 25 b and the second connecting plate 25 c are rotatably connected by the first connecting pin 31, the second connecting portion 25 b resists the urging force of the link spring 17. It rotates in the clockwise direction in the figure around the four connecting pins 34.
Then, the sixth connecting pin 36 fixed to the second connecting portion 25b moves in the inclined hole 25ac1 of the cam hole 25ac toward the base end side. As a result, the contact member 30 moves away from the second assembly body 24 in a state where the contact member 30 is inclined forward by an angle θ1.

In the present embodiment, the second opening / closing member 25a, the second connecting portion 25b, the second connecting plate 25c, and the abutting pin 39 constituting the second opening / closing link mechanism portion 25 are formed in a predetermined shape as described above. In addition, since each of the connecting pins 31, 33-37 is fixed at a predetermined position, the second opening / closing member 25a is separated from the second assembly body 24 in a state where the distance L4 is larger than the distance L3. To go.
The distance L3 is, for example, the distance from the distal joint surface 24b of the second assembly body 24 to the distal end portion of the second opening / closing member 25a, and the distance L4 is the proximal end of the second opening / closing member 25a. It is the distance to.

  As shown in FIGS. 14C and 14D, the abutment pin 39 further moves in the proximal direction, so that the sixth connection pin 36 fixed to the second connection plate 25c moves in the straight hole 25ac2 of the cam hole 25ac. Move toward the base end. Thus, the angle θ1 is further increased, that is, the second opening / closing member 25a is separated from the second assembly body 24 while gradually increasing the distance between the distance L4 and the distance L3.

  Then, as shown in FIG. 14E, the abutment pin 39 is disposed in proximity to or in contact with the proximal-side rising surface 24ae of the notch 24ap, whereby the second opening / closing member 25a is separated from the second assembly body 24. The maximum open state with the maximum separation.

  When the second connecting portion 25b is rotated clockwise around the fourth connecting pin 34, the engagement state between the second tooth portion 25bg and the second notch portion 26an changes for each tooth. To do. Therefore, the second opening / closing member 25a is gradually switched from the closed state to the open state with the movement of the abutting pin 39 toward the proximal end side.

  The second connecting portion 25b is restricted from rotating counterclockwise about the fourth connecting pin 34 by engaging the second notch portion 26an with the second tooth portion 25bg. For this reason, the second opening / closing member 25a is held, for example, in the maximum open state corresponding to the movement distance of the abutting pin 39, or in the open state where the abutting pin 39 is located in the middle of the notch 24ap. .

  The opened second opening / closing member 25a returns to the closed state when the engagement state between the second tooth portion 25bg and the second notch portion 26an is released against the urging force of the holding portion spring 18. To do. When the engaged state is released, the second connecting plate 25 c rotates clockwise around the first connecting pin 31 by the biasing force of the link spring 17. Then, the abutting pin 39 is moved to the distal end side, and the second connecting portion 25b and the second connecting plate 25c are arranged again to lie on the fixed surface 22p1, and the second opening / closing member 25a is closed.

Here, the tip portion constituting frame 2f will be described.
As shown in FIG. 15, the tip portion constituting frame 2 f includes four first part main body arrangement recessed parts 2 f 1 and four second part main body fixing recessed parts 2 f 2 alternately on the inner surface side.

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 plate 15c is arranged is formed on the base end side of the first assembly main body arrangement 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 15d2 of the slider 15d 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 operation in the contact state with the contact and the operation in the non-contact state are 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.

  In addition, 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 15d2, and the slider 15d is moved to the unit. The first connecting plate 15c and the first connecting portion 15b are operated with the movement of the slider 15d as to whether or not the main body 12 is moved to the proximal end side, and the first opening / closing member 15a is opened from the closed state. Check if it changes to.

  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 bump pin 39 comes into contact with the pin contact portion 23c, and the bump pin 39 is moved to the unit main body 12. The second connecting plate 25c and the second connecting portion 25b are operated in accordance with the movement of the abutment pin 39 as to whether or not the second opening / closing member 25a is moved from the closed state to the open state. Check if it changes to.

  In addition, when the blade member 16b and the blade member 26b are not in contact with each other, the operator uses the biasing force of the holding portion spring 18 to cause the first notch portion 16an and the first engagement portion of the first locking portion 16a1. Confirmation of whether or not a locking state in which the first tooth portion 15bg of 15b3 is engaged can be obtained, and whether or not a locking state in which the second notch portion 26an and the second tooth portion 25bg are engaged can be obtained. Confirm.

  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 15b3 and the first tooth portion 15bg of the first engagement portion 15b3 can be obtained.
At this time, the contact member 30 provided on the first opening / closing member 15a disposed on the distal end side and the contact member 30 provided on the second opening / closing member 25a disposed on the proximal end side. The positional relationship changes. 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 locking state with the portion 25bg 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 assembles the interlocking opening / closing unit 2 to the first sliding member 4 and the second sliding member 5 in order to obtain the in-pipe insertion device 1. At this time, the worker also performs an operation of attaching the pinching prevention member 40.
Therefore, the operator first uses the jig (not shown) to fix the pinching prevention member 40 to the gap between the contact member 30 and the first opening / closing member 15a and the pinching prevention member 40 to the contact member 30 and the second opening / closing member. It arrange | positions in the clearance gap between 25a. When there is no gap between the contact member 30 and the first opening / closing member 15a and the second opening / closing member 25a, and the contact member 30 is provided with an axial through-hole, the pinching prevention member 40 is moved in the axial direction. Place in the through hole. At this time, the operator causes the distal end portion of the pinching prevention member 40 to be led out from the distal end side opening 30m1 and leads the base end portion from the proximal end side opening 30m2.

  Next, an operator fixes the front-end | tip part of the pinching prevention member 40 to the front-end | cover cover 9 as shown in FIG. In addition, the operator attaches and fixes the first opening / closing unit 10 of the interlocking opening / closing unit 2 to the first connecting member 4 a fixed to the first sliding member 4, and the second opening / closing unit of the interlocking opening / closing unit 2. The operation of assembling 20 to the second connecting member 5 a fixed to the second sliding member 5 is performed.

  Next, the operator uses the first assembly screw 2m1 to fix the unit body 12 of the first opening / closing unit 10 to the first connecting member 4a. Moreover, the base end part of each pinching prevention member 40 is fixed to the 2nd connection member 5a with a screw | thread or adhesion | attachment. At this time, the operator adjusts the pinching prevention member 40 to a state in which the first opening / closing member 15a is tensioned with a predetermined tension without being loosened even when the first opening / closing member 15a is closed.

  Finally, the operator uses the assembly screw 2m2 to connect the proximal end portion of the proximal end configuration frame 22 fixed to the proximal end portion of the second assembly body 24 of the second opening / closing unit 20 to the second connection. It fixes to the member 5a. Moreover, the base end part of each clamping prevention member 40 is fixed to the base end part structure frame 22 with a screw or adhesion | attachment.

Thereafter, the operator appropriately operates the operation unit 8 to confirm whether or not the interlocking opening / closing unit 2 provided with the pinching prevention member 40 performs a predetermined operation. That is, whether or not the first opening / closing member 15a and the second opening / closing member 25a integral with the contact member 30 slide smoothly with respect to the pinching prevention member 40 in a state where the pinching prevention member 40 is stretched. Confirmation, whether or not the first opening / closing member 15a and the second opening / closing member 25a are opened against the tension of the pinching prevention member 40, and the first opening / closing member 15a and the second opening / closing member 25a are opened. The state in which the anti-pinch member 40 is pulled is confirmed.
After completing these confirmations, the in-tube insertion device 1 can be obtained.

The operation of the tube insertion device 1 configured as described above will be described.
As shown in FIG. 16, the intravascular insertion device 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 53 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 in-tube insertion device 1 can move substantially integrally.

  Further, both the first opening / closing part set 11 of the interlocking opening / closing unit 2 of the in-pipe insertion device 1 and the second opening / closing part set 21 of the second opening / closing unit 20 are closed, and the first grip part 6 and the second grip part 7 are closed. By keeping the distance 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 100A is inserted into, for example, an elongated pipe 90 will be described with reference to FIGS. 17A and 17B. Note that the endoscope 50A of the endoscope system 100A is, for example, an industrial endoscope.

  When the operator inserts the endoscope system 100 into the pipe 90 shown in FIG. 17A, 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 in-pipe insertion device 1 toward the deep portion of the pipe 90. . As a result, the distal end portion 52 of the insertion portion 51 protruding from the distal end surface of the insertion device insertion portion 3 and the distal end cover 9 is inserted into the deep portion of the pipe 90 as shown in FIG. 17B.

  As described above, in the endoscope system 100 in which the endoscopic insertion device 1 and the endoscope 50 are combined, both the first opening / closing portion set 11 and the second opening / closing portion set 21 of the interlocking opening / closing unit 2 of the intraductal insertion device 1 are combined. By closing the first grip portion 6 and the second grip portion 7 at a distance L and inserting the insertion device insertion portion 3 into the closed state, the first opening / closing portion set 11 of the interlocking opening / closing unit 2 is inserted. 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 and the closed state of the second opening / closing portion group 21 to the open state.

  Note that the endoscope 50A of the endoscope system 100A 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 set 11 and the second opening / closing part set 21 of the interlocking opening / closing unit 2 of the intra-pipe insertion device 1, and sets a distance between the first grip part 6 and the second grip part 7. The endoscope is inserted without changing the closed state of the first opening / closing portion group 11 and the closed state of the second opening / closing portion group 21 of the interlocking opening / closing unit 2 by inserting the insertion device insertion portion 3 while holding the position L. You may make it introduce 50 front-end | tip parts 52 in the deep part in a 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. 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 intravascular insertion device 1 as follows, for example. use.

  The surgeon does not use the opening / closing mechanism portion of the interlocking opening / closing unit 2 as shown in FIG. 18, 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 surgeon appropriately moves the first grip portion 6 and the second grip portion 7 forward and backward with respect to the linearized large intestine, as shown in FIGS. 20 (A) and 20 (B). Next, the system insertion unit 101 is inserted into the deep part.

  The endoscope 50 of the endoscope system 100 is not limited to a medical endoscope, but may be an industrial endoscope inserted into a pipe or the like. When it is determined that the further insertion of the system insertion portion 101 becomes difficult in the pipe as described above, the first grip portion 6 and the second grip portion 7 of the operation portion 8 are appropriately advanced and retracted to insert the system. You may make it insert in the piping deep part of the part 101. FIG.

Here, the operation for gathering the large intestine folds will be described.
With reference to FIGS. 21 to 30, the relationship between the operation state of the operation unit when performing the operation of dragging the intestinal tract 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. .

  21A to 21I, the first sliding member 4 includes the first grip 6 and the second sliding member 5 includes the second grip 7. It shall be assumed. In addition, in FIG. 22 to FIG. 30, one first opening / closing part set 11 among the plurality of first opening / closing part sets 11 provided in the first opening / closing unit 10 is illustrated, and a plurality of second opening / closing units 20 provided in the second opening / closing unit 20 are illustrated. Of the two opening / closing part sets 21, one second opening / closing part set 21 is shown. Further, in FIG. 22 to FIG. 30, the tip spring 9b, the first sliding member 4, and the second sliding member 5 are not shown, and the pinching prevention member 40 is indicated by a broken line.

Here, the dragging operation will be described.
When the surgeon determines that it is difficult to further insert the system insertion unit 101 without using the opening / closing mechanism part of the interlocking opening / closing unit 2, the surgeon starts a dragging operation.

As shown in the initial state of the operation unit in FIG. 21A, the operation unit 8 is configured such that the proximal end of the first sliding member 4 and the proximal end of the second sliding member 5 are separated by a distance L. Yes. At this time, as shown in FIG. 22, the first opening / closing member 15a of the first opening / closing part group 11 and the second opening / closing member 25a of the second opening / closing part group 21 are both closed. Moreover, the 2nd notch part 26an and the 2nd tooth | gear part 25bg are a non-locking state. Furthermore, the pinching prevention members 40 respectively extending from the distal end side opening 30m1 and the proximal end side opening 30m2 are in a state of being tensioned with a predetermined tension.
In the following description, the contact member 30 integrated with the first opening / closing member 15a of the first opening / closing portion set 11 is referred to as a first contact member 30t1, and the second opening / closing member 25a of the second opening / closing portion set 21 is referred to as the first opening / closing member 25a. The integral contact member 30 is referred to as a second contact member 30t2.

  In performing the dragging operation, the surgeon does not change the position of the base end of the first sliding member 4 as shown in FIG. 21B, for example, as shown by the arrow 21A. Move 5 toward the tip. 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. 23, 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 9 disposed on the distal end surface of the unit body 12 is pressed against the distal end portion component frame 2f and resists the biasing force of the distal end spring 9b. It moves to the tip side together with the tip portion constituting frame 2f. Then, the pinching prevention member 40 starts to expand, and the first opening / closing portion group 11 and the second opening / closing portion pair 21 move with respect to the pinching prevention member 40.

  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 first opening / closing holding portion (not shown). The abutting state of the sixteen blade members 16b is gradually released, and the abutting pin 39 moves toward the pin abutting portion 23c of the abutting member 23 fixed to the unit main body 12.

  Then, when the operator continues to move the second sliding member 5 to the distal end side, the contact state between the blade member 26b and the blade member 16b is released, and the abutting pin 39 is moved to the pin contact portion. 23c. Thereafter, with the movement of the second opening / closing unit 20 toward the distal end side, the abutting pin 39 is moved toward the rising surface 24ae within the first notch 24ap.

  As the abutting pin 39 moves toward the rising surface 24ae, the second connecting plate 25c rotates around the abutting pin 39 as described above, and gradually rises from the second opening / closing member fixing portion 25c5 side. Go. At this time, the pinching prevention member 40 extending from the proximal end side opening 30m2 of the second contact member 30t2 and the pinching prevention member 40 extending from the distal end side opening 30m1 of the second contact member 30t2 are further provided. It changes to a stretched state.

  In addition, the second connecting portion 25 b rotatably connected to the second connecting plate 25 c by the first connecting pin 31 rotates around the fourth connecting pin 34 against the urging force of the link spring 17. Then, the sixth connecting pin 36 fixed to the second connecting portion 25b moves toward the proximal end side in the cam hole 25ac of the second opening / closing member 25a. As a result, the second opening / closing member 25a, which has been in the closed state, changes to the maximum open state in a state where it is tilted forward by θ1 as described above. Then, the pinching prevention member 40 extending from the distal end side opening 30m1 and the proximal end side opening 30m2 of the second contact member 30t2 is changed to a more tensioned state.

  As described above, the second contact member 30t2 moves toward the radially outer side of the inner hole 12a of the unit main body 12, whereby the four second contact members 30t2 gradually increase in diameter and come into contact with the flange. . At this time, the pinching prevention member 40 is gradually pulled and extended.

  Then, the abutting pin 39 approaches or comes into contact with the rising surface 24ae, and the second contact member 30t2 of the second opening / closing unit 20 is in the maximum open state as shown in FIG. At this time, the second contact member 30t2 is in contact with the heel and is reliably placed in contact. In addition, since the pinching prevention member 40 is disposed in a tensioned state, the wrinkles are prevented from entering between the second contact member 30t2 and the second assembly main body 24.

  The maximum open state of the second contact member 30t2 is maintained by the second notch portion 26an of the second locking portion 26a1 being locked to the second tooth portion 25bg of the second engaging portion 25b3. 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 respective diameter-enlarged states of the second contact member 30t2, in other words, the tilted state of the second contact member 30t2, changes depending on the inner diameter of the insertion portion such as the intestine not shown. Therefore, when the diameter of the intestine is small, the maximum open state is reached with a diameter-expanded state or an inclination angle smaller than the open state shown.

  In other words, depending on the inner diameter of the inserted portion, the substantially entire surface of the contact surface 30t of the second contact member 30t2 is in contact with the inner wall of the inserted portion, or the contact surface from the base end of the contact surface 30t. The state changes to a state in which any part of the 30t tip is in contact. Since the pinching prevention member 40 is in a state of being tensioned with a predetermined tension when the second contact member 30t2 is in a closed state, even in such a case, the pinching prevention member 40 is always in a tensioned state. Is prevented from entering.

  After the second sliding member 5 is set to the maximum advanced state as shown in FIG. 21B, the surgeon holds the second sliding member 5 at hand as shown by an arrow 21B in FIG. Perform the operation of pulling to the side. Then, the movement of the second opening / closing unit 20 and the distal end portion constituting frame 2f fixed to the distal end side thereof to the proximal end side is started.

  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. At this time, the first opening / closing part group 11 and the second opening / closing part group 21 move relative to the pinching prevention member 40.

  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 contact surface 26b2 of the blade member 26b becomes an inclined surface 16b3 of the blade member 16b. Abut. That is, FIG. 21C 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.

  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. Then, the distal end cover 9 moves to the proximal end side together with the distal end portion constituting frame 2f, and the second contact surface 26b2 of the blade member 26b contacts the inclined surface 16b3 of the blade member 16b and the holding portion spring 18 is attached. Move against the power.

  When the operation portion 8 has the positional relationship shown in FIG. 21D, the first notch portion 16an of the first locking portion 16a1 and the first tooth portion 15bg of the first engaging portion 15b3 are locked. The state changes to an unlocked state. Then, the 1st connection part 15b will be in a closed state with the urging | biasing force of the spring 17 for a link. However, in this description, since the 1st connection part 15b was already a closed state in FIGS. 22-24 which is a state immediately before, a change is not seen here. That is, (D) of FIG. 21 is the first contact state, and the state where the locking state of the first notch portion 16an and the first tooth portion 15bg of the first opening / closing unit 10 is changed to the non-locking state. It is.

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

  Then, after that, the second sliding member 5 is further moved to the proximal end side, so that the distance between the proximal end of the first sliding member 4 and the proximal end of the second sliding member 5 gradually becomes the distance L. It gets smaller. As this interval gradually decreases, the tip portion constituting frame 2f moves on the unit main body 12 and comes into contact with the tip surface of the engaging protrusion 15d2 of the slider 15d 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.

  The surgeon continues to move the second sliding member 5 to the proximal end side from the state where the proximal end portion of the distal end configuration frame 2f is in contact with the distal end surface of the engaging protrusion 15d2. Then, the slider 15d moves in the cutout groove 14b toward the proximal end rising surface 14be as the distal end component frame 2f moves toward the proximal end. Then, as described above, the first connecting plate 15c rotates around the second connecting pin 32, and the first opening / closing member fixing portion 15c5 side gradually rises. At this time, the pinching prevention member 40 extending from the proximal end side opening 30m2 of the first contact member 30t1 and the pinching prevention member 40 extending from the distal end side opening 30m1 of the first contact member 30t1 are stretched. Change to the state.

  Further, the first connecting portion 15 b rotatably connected to the first connecting plate 15 c by the first connecting pin 31 rotates around the fourth connecting pin 34 against the urging force of the link spring 17. Then, the sixth connecting pin 36 fixed to the first connecting portion 15b moves toward the proximal end side in the cam hole 15ac of the first opening / closing member 15a, and the first opening / closing member 25a is closed in the inclined state described above. It changes from the state toward the maximum open state. Then, the pinching prevention member 40 extending from the proximal end side opening 30m2 of the first contact member 30t1 and the pinching prevention member 40 extending from the distal end side opening 30m1 of the first contact member 30t1 are further stretched. Change to the specified state.

  As described above, the first abutting member 30t1 also moves toward the radially outer side of the inner hole 12a of the unit main body 12, whereby the four second abutting members 30t2 gradually increase in diameter and abut against the flange. . At this time, the pinching prevention member 40 is gradually pulled and extended.

  Then, the base end surface of the slider 15d approaches or contacts the base end rising surface 14be of the cutout groove 14b, and the first contact member 30t1 together with the second contact member 30t2 as shown in FIGS. Is fully open. At this time, the first abutting member 30t1 is in a surface contact with the heel and is securely disposed. Moreover, since the pinching prevention member 40 is in a tensioned state, the wrinkle is prevented from entering between the first contact member 30t1 and the first assembly body 14.

  As described above, when the first contact member 30t1 is in the open state, the diameter-enlarged state of the first contact member 30t1, in other words, the tilted state of the first contact member 30t1, changes depending on the inner diameter of the insertion portion such as the intestine not shown. Therefore, when the diameter of the intestine is small, the maximum open state is obtained with a diameter-expanded state or an inclination angle smaller than the open state illustrated.

  That is, depending on the difference in inner diameter of the inserted portion, the substantially entire surface of the contact surface 30t of the first contact member 30t1 is in contact with the inner wall of the inserted portion, or the contact surface from the base end of the contact surface 30t. It will be in the state which contact | abuts in the middle to the front of 30t.

  The maximum open state of the first contact member 30t1 is maintained by the first notch portion 16an of the first locking portion 16a1 being locked to the first tooth portion 15bg of the first engaging portion 15b3. . At this time, as shown in FIG. 21 (E), 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. 21B to the state shown in FIG. 21E, 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 contact member 30t1 is in the maximum open state, the wrinkles squeezed by the second contact member 30t2 are squeezed by the second contact member 30t2 and the first contact member 30t1. The state is maintained.

  When the surgeon performs an operation of pushing the second sliding member 5 to the distal end side again from the minimum separation 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 21C 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. 27, the inclined surface 26 b 3 of the blade member 26 b of the second opening / closing holder 26 comes into contact with the second contact surface 16 b 2 of the blade member 16 b of the first opening / closing holder 16. That is, (F) of FIG. 21 is a state in which the blade member 26b of the second opening / closing holding portion 26 moves forward and contacts the blade member 16b of the first opening / closing holding portion 16.

  The surgeon continues to move the second sliding member 5 to the distal end side in a state where the blade member 26b of the second opening / closing holding portion 26 advances and contacts the blade member 16b of the first opening / closing holding portion 16. Go. Then, the inclined surface 26b3 of the blade member 26b moves against the urging force of the holding portion spring 18 while contacting the second contact surface 16b2 and the first contact surface 16b1 of the blade member 16b. Then, the locking state between the second notch portion 26an of the second locking portion 26a1 and the second tooth portion 25bg of the second engaging portion 26a1 changes to the non-locking state. At this time, as shown in FIG. 28, the second opening / closing member 25a changes from the open state to the closed state. That is, the diameter of the second contact member 30t2 that has been increased in diameter is reduced at a stretch.

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 scooped up by the second opening / closing member 25a is held in the scooped up state by the first connecting portion 15b. Further, since the pinching prevention member 40 is in a state of being tensioned with a predetermined tension without being loosened even when the diameter of the second contact member 30t2 is reduced, the second opening / closing member 25a and the second portion It is possible to prevent wrinkles from entering between the assembly main body 24.
FIG. 21G shows the second contact state where the locking state of the second notch portion 26an and the second tooth portion 25bg of the second opening / closing unit 20 has changed to the non-locking state. It is.

  The surgeon 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 increased. The distance L is reached 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 39 moves toward the abutting member 23. Then, as shown in FIG. 29, the tip cover 9 moves to the tip side with the movement of the tip portion constituting frame 2f, and the abutting pin 39 is again in contact with the pin of the abutting member 23 fixed to the unit body 12. It contacts the part 23c.

  Here, when the surgeon continues to move the second sliding member 5 toward the distal end side and move toward the maximum advanced state of the second sliding member shown in FIG. 39 is moved in the first cutout portion 24ap toward the rising surface 24ae. As a result, as described above, the second connecting plate 25c of the second opening / closing unit 20 is gradually raised, and the abutting pin 39 again approaches or comes into contact with the rising surface 24ae as shown in FIG. Together with the first abutting member 30t1, the second abutting member 30t2 is in the maximum open state and is reliably disposed in contact with the heel. At this time, the 40 extended from the front end side opening 30m1 and the base end side opening 30m2 of each contact member 30t1, 30t2 is in a tensioned state.

  Thereafter, the operator operates the operation unit 8 as shown in FIGS. 21C and 21D. At this time, the first contact member 30t1 is in the maximum open state, and the second opening / closing unit 20 including the second contact member 30t2 that has changed to the maximum open state is moved to the proximal end side.

  Then, the second contact surface 26 b 2 of the blade member 26 b of the second opening / closing holder 26 contacts the inclined surface 16 b 3 of the blade member 16 b of the first opening / closing holder 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 around 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 15bg of the first engaging portion 15b3 changes to the non-locking state.

  Then, the diameter of the first contact member 30t1 is reduced, and the contact arrangement state with respect to the heel is released. At this time, since the second contact member 30t2 in the maximum open state is in contact with the heel, the squeezed state of the heel held by the first contact member 30t1 is held by the second contact member 30t2. Is done. Further, since the pinching prevention member 40 is in a state of being tensioned with a predetermined tension without being loosened even when the diameter of the first abutting member 30t1 is reduced, the first opening / closing member 15a and the first portion A wrinkle is prevented from entering between the assembly main body 14.

  Then, by subsequently performing the operations shown in FIGS. 21E to 21H, the second large contact of the second contact member 30t2 in the fully opened state is used to perform the second colon scooping. In addition, the first contact member 30t1 is in the maximum open state, and the scooping state of the scissors can be maintained.

  Thereafter, the operator repeatedly performs the operation shown in FIGS. 21C to 21H, in other words, the front-rear relationship between the first contact member 30t1 and the second contact member 30t2. As shown in FIG. 19 (B), it is possible to obtain a squeezed state as shown in FIG.

  At least one of the first contact member 30t1 fixed to the first opening / closing member 15a or the second contact member 30t2 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 is performed to linearize the large intestine as shown in FIG. it can.

  When the system insertion unit 101 is inserted into the colon that has been straightened as shown in FIG. 19 (c) toward the deep part of the large intestine, the surgeon is shown in FIGS. 21 (C) to 21 (H). As shown in FIG. 21 (I), the second contact member 30t2 of the second opening / closing member 25a is not performed by repeatedly performing the hand operation without changing the distance from the patient's anus to the operation unit 8. Is moved in the advancing direction (anus side) as indicated by an arrow 21D in the figure, with the position of the operating portion, specifically, the position of the proximal end of the first sliding member 4 being in contact with the heel Push in to perform.

  That is, the surgeon advances the position of the proximal end of the first sliding member 4 as shown in FIG. 21I while performing the operation shown in FIGS. 21C to 21H. 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, after the first contact state is obtained and the first opening / closing member 15a is closed, the second opening / closing member 25a is closed. Or after obtaining the second contact state and closing the second opening / closing member 25a, obtaining the first contact state and closing the first opening / closing member 15a. 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, the second sliding member 5 is moved toward the tip side as indicated by an arrow 21A in FIG.

  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. 21 to obtain the state shown in FIG. 21 (E), and then move the second sliding member 5 to perform the 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. 21 (B), the first sliding member 4 may be moved to perform the scooping operation of the scissors. .

  As described above, the in-pipe insertion device 1 is provided on the distal end side of the first sliding member 4 by appropriately changing the relative position between the first sliding member 4 and the second sliding member 5. The relative opening / closing 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 are changed, and the opening / closing provided in each of the opening / closing unit sets 11, 21. The members 15a and 25a are rotated apart from the fixing members 14 and 24 by rotating the connecting portions 15b and 25b and the connecting plates 15c and 25c in a predetermined direction. As a result, the abutment members 30t1 and 30t2 integral with the opening and closing members 15a and 25a can surely come into surface contact with the heel to obtain a large holding force. The open / close members 15a and 25a stand up toward the maximum open state in a state where the angle θ is inclined forward with respect to the traveling direction. As a result, a larger holding force can be obtained when the open / close members 15a and 25a are moved from the front end side to the rear end side than when the open / close members 15a and 25a are moved from the rear end side to the front end side, and a large pull-back force can be obtained at the time of dragging. .

Further, the pinching prevention member 40 is slidably disposed between the opening / closing members 15a and 25a and the contact members 30t1 and 30t2, and the pinching prevention member extends from the distal end side opening 30m1 and the proximal end opening 30m2. 40 ends are fixed in place. At this time, when the open / close members 15a and 25a are in the closed state, the pinching prevention member 40 is set to a tensioned state with a predetermined tension without loosening. As a result, the opening / closing members 15a, 25a slide relative to the pinching prevention member 40, so that the entire pinching prevention member 40 is substantially even while the opening / closing members 15a, 25a go from the closed state to the maximum open state. Can be stretched.
As a result, regardless of whether the open / close members 15a and 25a are in the closed state, the maximum open state, or from the open state to the open state, the contact members 30t1 and 30t2 are always between the assembly members 14 and 24. The pinching prevention member 40 in a stretched state can be arranged. Accordingly, intestinal folds are prevented from entering between the contact members 30t1 and 30t2 and the assembly main bodies 14 and 24, for example, during the dragging operation, and the open / close members 15a and 25a are changed from the open state to the closed state. It prevents the wrinkles from entering when changing.

In the above-described embodiment, the second opening / closing unit 20 is moved to the front end side with respect to the first opening / closing unit 10 in accordance with the relative movement of the first sliding member 4 and the second sliding member 5, or It is supposed to slide to the base end side. However, the unit main body 12 is provided with a driving unit which is a moving means for sliding the second opening / closing unit to the distal end side or the proximal end side, so that the second opening / closing unit 20 is slid to the distal end side or the proximal end side. It may be.
Further, the unit main body 12 may be a tip constituent member that constitutes the tip portion of the endoscope 50.

  In the in-pipe insertion device 1, the interlocking opening / closing unit 2 may be wrapped around the cover 110 with a margin as shown in FIG. 31. The cover 110 has an inner diameter dimension that is larger than a maximum opening state of the open / close members 15 a and 25 a and a length dimension that is longer than the length of the unit main body 12 by a predetermined dimension. The front end portion of the cover 110 is integrally fixed to the outer periphery of the front end cover 9, and the base end portion thereof is firmly fixed to the outer periphery of the front end portion of the second sliding member 5.

  As a result, the intestines can be squeezed without bringing the contact members 30t1 and 30t2 into direct contact with the intestinal wall. At this time, it is possible to reliably prevent the pullback from being brought into contact with the body wall or the like through the elastic tube body 104 with certainty. The provision of the pinching prevention member 40 prevents the cover 110 in a loose state from entering between the contact members 30t1 and 30t2 and the assembly main bodies 14 and 24.

  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 ... In-pipe insertion device 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 ... 1st set Attached screw 2m2 2nd assembly screw 3 Inserting device insertion portion 4 First sliding member 4a First connecting member 5 Second sliding member 5a Second connecting member 6 First grip portion 7 2nd grip part 8 ... operation part 9 ... tip cover 9a ... endoscope passing hole 9b ... tip spring 10 ... first opening / closing unit 11 ... first opening / closing part group 12 ... unit body 12a ... inner hole 12p ... plane
12p1 ... 1st plane 12p2 ... 2nd plane 14 ... 1st assembly main body 14a ... Fixed surface 14b ... Notch groove 14be ... Base end side rising surface 14c ... 1st long hole
14c1 ... 1st communication hole 14c2 ... 2nd communication hole 14d ... 2nd long hole
14e ... Spring hole 14f ... Notch 14fh ... Screw insertion hole
14h3 ... third connection pin fixing hole 14h4 ... fourth connection pin fixing hole 14h5 ... fifth connection pin fixing hole 15 ... first opening / closing link mechanism 15
15a ... first opening / closing member 15a1 ... main body 15a1f, 15a2f ... female screw 15a2 ... protrusion convex portion 15a3 ... first long hole 15a4 ... second long hole 15a5 ... concave 15a6 ... side wall 15a8 ... groove 15ac ... cam hole 15ac1 ... Inclined hole 15ac2 ... straight hole 15ah7 ... seventh connecting pin fixing hole 15b ... first connecting portion 15b1 ... first body 15b2 ... first protrusion 15b3 ... first engaging portion
15b4 ... Long hole 15b5 ... Slit 15b6 ... Link convex part
15bg ... 1st tooth part 15bh1 ... 1st connection pin fixing hole
15bh4 ... fourth connecting pin insertion hole 15bh6 ... sixth connecting pin fixing hole
15 bp ... plane part 15 c ... first connecting plate 15 c 1 ... first assembly main body sliding part 15 c 2 ... first main body engaging part 15 c 3 ... abutting member opening / closing part
15c4 ... Slider connecting portion 15c5 ... first opening / closing member fixing portion 15c6 ... long hole 15ch1 ... first connecting pin insertion hole 15ch2 ... second connecting pin insertion hole 15ch7 ... seventh connecting pin insertion hole 15d ... slider 15d1 ... sliding portion 15d2 ... Interlocking projection 15d3 ... Long hole 15dh2 ... Second connecting pin fixing hole 15dp ... Sliding surface 15du ... Upper surface 16 ... First open / close holding part 16a ... Holding part body 16a1 ... First locking part 16ah ... Hole 16an ... First Notch portion 16as ... side 16b ... blade member 16b1 ... first contact surface 16b2 ... second contact surface
16b3 ... Inclined surface 16c ... Convex part 16ch5 ... Fifth connecting pin insertion hole 17 ... Link spring 17f ... Hook part 18 ... Holding part spring
DESCRIPTION OF SYMBOLS 20 ... 2nd opening / closing unit 21 ... 2nd opening / closing part group 22 ... Base end part structure frame 22a ... Inner hole 22a1 ... 1st sliding surface 22a2 ... 2nd sliding surface 22p1 ... Fixed surface 22p2 ... Fastening surface 22pf ... Screw hole DESCRIPTION OF SYMBOLS 23 ... Pin contact member 23c ... Pin contact part 23d ... Sliding groove 23p ... Fixed surface 24 ... 2nd assembly main body 24a1 ... Tip part 24a2 ... Bending part 24a3 ... Base end part 24ad ... Axial groove
24ae ... rise surface 24ap ... first notch 24ar ... sliding protrusion 24b ... tip joining surface 24c ... first long hole 24c1 ... first communication hole
24c2 ... 1st communicating hole 24d ... 2nd long hole 24e ... Hole for spring
24f ... 2nd notch part 24h ... Screw head arrangement | positioning hole 24h3 ... 3rd connection pin fixing hole 24h4 ... 4th connection pin fixing hole 24h5 ... 5th connection pin fixing hole 25 ... 2nd opening-and-closing link mechanism part 25a ... 2nd opening-and-closing member 25a1 ... Body part 25a1f, 25a2f ... Female thread part 25a2 ... Base end convex part 25a3 ... First long hole 25a4 ... Second long hole 25a5 ... Recess 25a6 ... Side wall 25ac ... Cam hole 25ac1 ... Inclined hole 25ac2 ... Straight hole 25ah7 ... First 7 connection pin fixing hole 25b ... 2nd connection part 25b1 ... 1st main body 25b2 ... 2nd protrusion
25b3 ... 2nd engagement part 25b4 ... Long hole 25b5 ... Slit
25b6: Link convex part 25bg ... Second tooth part 25bh1 ... First connecting pin fixing hole 25bh4 ... Fourth connecting pin insertion hole 25bh6 ... Sixth connecting pin fixing hole 25bh7 ... Seventh connecting pin fixing hole 25bp ... Flat part 25c ... First part 2 connecting plate 25c1 ... 2nd set body sliding part 25c2 ... 2nd body engaging part
25c3: abutting member opening / closing part 25c4: abutting pin connecting part 25c5 ... opening / closing member fixing part 25c6 ... long hole 25ch1 ... first connecting pin insertion hole
25ch7: seventh connecting pin insertion hole 25ch9: abutting pin fixing hole 26 ... second opening / closing holding part 26a ... holding part body 26a1 ... second locking part 26ah ... hole 26an ... second notch part 26as ... side face 26b ... blade member 26b1 ... 1st contact surface 26b2 ... 2nd contact surface 26b3 ... Inclined surface 26c ... Convex part 26ch5 ... 5th connecting pin insertion hole 30 ... Contact member 30a ... Tip part 30b ... Base end part 30c, 30e ... Curved surface 30d ... Recessed space 30d1 ... Gap 30h ... Screw head arrangement hole 30m1 ... Front end side opening
30m2 ... proximal end side opening 30p ... plane part 30s ... slope part 30t ... contact surface 30t1 ... first contact member 30t2 ... second contact member 31 ... first connection pin 32 ... second connection pin 33 ... third connection Pin 34 ... Fourth connecting pin
35 ... 5th connection pin 36 ... 6th connection pin 37 ... 7th connection pin 38 ... Fixing screw 38a ... Washer 39 ... Abutment pin 40 ... Cinch prevention member 50 ... Endoscope 50A ... Endoscope 51 ... Endoscope Mirror insertion part 52 ... tip part 53 ... bending part
54 ... Flexible tube 90 ... Piping 98 ... Anus 99 ... Large intestine
100, 100A ... Endoscope system 101 ... System insertion part
104 ... Elastic tube body 110 ... Cover

Claims (8)

A first opening / closing unit movable in an insertion axis direction;
A second opening / closing unit movable on the same axis as the first opening / closing unit;
A contact member having a contact surface that contacts the inside of the pipe and can be changed to a closed state close to one surface of the fixing member provided in the first opening / closing unit or an open state spaced from the one surface of the fixing member. A first opening and closing member;
A contact member having a contact surface that can be changed to a closed state close to one surface of the fixing member provided in the second opening / closing unit or an open state spaced from the one surface of the fixing member; A second opening and closing member;
When the first opening / closing unit and the second opening / closing unit are moved in the axial direction, and the positional relationship between the first opening / closing member and the second opening / closing member is switched, the first opening / closing member and the second opening / closing member are switched. Open / close state switching means for switching the open / close state of the open / close member;
The first opening / closing unit and the second opening / closing unit open / close an opening / closing member provided in each opening / closing unit by moving the first opening / closing unit and the second opening / closing unit in the insertion axis direction. In an in-pipe insertion device comprising:
The opening / closing member is provided with a cam hole at a first position, while a shaft portion is provided at a second position,
The fixing member forms a groove at a first position, while providing a shaft portion at a second position,
The opening / closing mechanism includes a first link member including an end portion slidably disposed in the cam hole of the opening / closing member and an other end portion rotatably disposed on the shaft portion of the fixing member, And one end part rotatably connected to the shaft part of the opening / closing member and the first link member rotatably connected to the groove formed in the fixing member. A tube insertion device comprising a second link member having an end. A first opening / closing unit that is movable in the insertion axis direction and has a first fixing member;
A second opening / closing unit movable on the same axis as the first opening / closing unit and having a second fixing member;
A first opening / closing member comprising a contact member having a contact surface that contacts the inside of the tube;
A second opening / closing member comprising a contact member having a contact surface that contacts the inside of the tube;
A first link member and a second link member that rotatably connect the first opening / closing member and the first fixing member, the second opening / closing member and the second fixing member;
In the configuration in which the first link member and the second link member are rotatably assembled in an X shape,
One end portion of the first link member is slidably disposed in a cam hole provided in each of the first opening / closing member and the second opening / closing member, and the other end portion of each of the first fixing member and the second fixing member. One end portion of the second link member is slidably disposed in a groove provided in each of the first fixing member and the second fixing member, and the other end portion is the first end. 1 is an opening / closing member and is attached to the shaft portion of the second opening / closing member so as to be rotatable,
Along with the movement of the first opening / closing unit or the second opening / closing unit,
The in-pipe insertion device, wherein the contact member changes from a closed state close to the first fixing member and the second fixing member to an open state separated from the closed state, or from a separated open state to a closed state close to the first fixed member.   The in-tube insertion device according to claim 2, wherein the contact member changes from a closed state close to the first fixing member and the fixing member to an open state separated forward while tilting. A first opening / closing unit movable in an insertion axis direction;
A second opening / closing unit movable on the same axis as the first opening / closing unit;
A contact member having a contact surface that contacts the inside of the pipe and can be changed to a closed state close to one surface of the fixing member provided in the first opening / closing unit or an open state spaced from the one surface of the fixing member. A first opening and closing member;
A contact member having a contact surface that can be changed to a closed state close to one surface of the fixing member provided in the second opening / closing unit or an open state spaced from the one surface of the fixing member; A second opening and closing member;
When the first opening / closing unit and the second opening / closing unit are moved in the axial direction, and the positional relationship between the first opening / closing member and the second opening / closing member is switched, the first opening / closing member and the second opening / closing member are switched. An open / close state switching means for switching the open / close state of the open / close member, and a tube insertion device comprising:
The first opening / closing unit and the second opening / closing unit open / close an opening / closing member provided in each opening / closing unit by moving the first opening / closing unit and the second opening / closing unit in the insertion axis direction. With an opening and closing mechanism
The opening / closing mechanism is
One end portion slidably disposed in a cam hole formed at the first position of the opening / closing member and the other end portion rotatably disposed on a shaft portion fixed at the second position of the fixing member. A first link member comprising a predetermined shape,
One end portion pivotably connected to the shaft portion fixed to the second position of the opening / closing member, which is pivotally connected to the first link member at a predetermined position, and the first of the fixing member. A second link member configured in a predetermined shape with a second end portion slidably disposed in a groove formed at a position;
In the configuration comprising:
As the first opening / closing unit or the second opening / closing unit moves, the other end of the second link member is moved in the insertion axis direction along the groove, whereby the second link member is moved to the opening / closing member. The first link member rotates about the shaft portion of the fixing member, and the opening / closing member is separated from one surface of the fixing member so that the contact member is in an open state. An intraductal insertion device characterized by comprising:   The opening / closing mechanism having the first link member and the second link member is in contact with each other until the first opening / closing member and the second opening / closing member provided with the contact member are changed from the closed state to the maximum opened state. 5. The intraductal insertion device according to claim 1, wherein the member is tilted forward.   A band-shaped, telescopic, and pinching prevention member is disposed in a gap formed between the contact member and the first opening / closing member and between the contact member and the second opening / closing member. The in-pipe insertion device according to claim 4, wherein each end portion of the anti-pinch member to be extended is fixed, and the anti-pinch member is provided with a predetermined tension.   The pinching prevention member is slidably disposed in a gap between the contact member and the first opening / closing member and a gap between the contact member and the second opening / closing member. The intraductal insertion device according to claim 5. A first opening / closing unit movable in an insertion axis direction;
A second opening / closing unit movable on the same axis as the first opening / closing unit;
A contact member having a contact surface that contacts the inside of the pipe and can be changed to a closed state close to one surface of the fixing member provided in the first opening / closing unit or an open state spaced from the one surface of the fixing member. A first opening and closing member;
A contact member having a contact surface that can be changed to a closed state close to one surface of the fixing member provided in the second opening / closing unit or an open state spaced from the one surface of the fixing member; A second opening and closing member;
When the first opening / closing unit and the second opening / closing unit are moved in the axial direction, and the positional relationship between the first opening / closing member and the second opening / closing member is switched, the first opening / closing member and the second opening / closing member are switched. In an in-pipe insertion device comprising an open / close state switching means for switching an open / close state of the open / close member,
A gap in which a band-like, stretchable anti-pinch member is slidably disposed between the contact member and the first opening / closing member and between the contact member and the second opening / closing member, and The contact member is provided with a front end side opening and a base end side opening through which the pinching prevention member extends in communication with the gap,
Each end portion of the anti-pinch member disposed in the gap and extending from the front end side opening and the base end side opening is fixed, and the anti-pinch member is provided in a tensioned state with a predetermined tension. An intraductal insertion device characterized by that.

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