JP3014495B2 - Connection structure of operation wire for diagnostic device in body cavity - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between an operation wire disposed between a bending portion and a bending operation portion of an in-vivo diagnostic device, and a connected member connected to the operation wire.

[0002]

2. Description of the Related Art Conventionally, when an operation wire provided between a bending portion and a bending operation portion of an in-vivo diagnostic device is connected to a member to be connected, connection has been made by soldering. However, in the case of connection by soldering,
During the soldering operation, the flux or the like scatters and adheres to other existing components (for example, an image guide fiber), thereby deteriorating them. Further, once the soldering is performed, if the operating wire subsequently becomes loose, it is difficult to remove the loosening. Then, in order to solve such a problem, the one described in Japanese Patent Application Laid-Open No. 58-89233 has been proposed. The connection structure of the operation wire described here will be described with reference to FIG. 58. First, the end 1a of the operation wire 1 is turned back, and the loop 2 is formed by crimping with the first pipe A. Then, the loop 2 is connected to the connection ring 3 (member to be connected), and the terminal 1b of the operation wire 1 is folded back to overlap the outside of the first pipe A. Next, operation wire 1
Is pressed by a second pipe B fitted to the outside of the first pipe A. Thereby, the operation wire 1 and the connection ring 3 are connected. The first and second pipes A and B are each made of a plastically deformable material (such as stainless steel or iron). According to the connection structure of the operation wires 1, the soldering operation becomes unnecessary, and the above-mentioned adverse effect on the other parts due to the flux can be avoided. Also, the first and second pipes A,
Since B can be plastically deformed, the operating wire 1 and the connecting ring 3
After the connection, the first and second pipes A and B can be restored to the state before the connection and the operation wire 1 can be pulled out. Therefore, by connecting the operation wire 1 and the connection ring 3 again, the slack of the operation wire 1 generated after the connection can be removed.

[0003]

However, in the connection structure of the operation wire 1, when the operation wire 1 and the connection ring 3 are connected, the end 1a and the terminal 1b of the operation wire 1 are connected to the first and second terminals, respectively. The pipes A and B need to be crimped, and the connection work is very troublesome.

In order to remove the above-mentioned slack, the first
And when the second pipes A and B are repeatedly plastically deformed, the material becomes dull and the crimping force drops sharply, and the operating wire 1 easily falls off from the first and second pipes A and B during use, There is a problem that the bending operation becomes impossible.

Further, since the operation wire 1 is usually formed by a stranded wire, the end 1a and the end 1b of the operation wire are crimped by the first and second pipes A and B, so that the operation wire 1 is formed. 1 end 1a and terminal 1b
There is a problem that the twist of the wire is broken and the operation wire 1 is damaged.

The present invention has been made in view of the above-mentioned conventional technical problems, and can easily and firmly connect an operation wire and a member to be connected. An object of the present invention is to provide a connection structure of an operation wire for a diagnostic device in a body cavity, in which a slack of a wire can be easily removed, and an end portion and a terminal of the operation wire are not damaged.

[0007]

According to the present invention, in order to achieve the above object, an operation wire disposed between a bending portion and a bending operation portion of a diagnostic apparatus for a body cavity, and the operation wire is connected to the operation wire. In the connecting structure with the connected member, one end of the connected member has an opening on the outer surface, the other end has an engaging hole extending toward the inside, the other end has an opening on the outer surface, and the other end has the engaging hole. And a through hole through which the operation wire is inserted is formed on the inner peripheral surface of the operation wire, and a portion of the operation wire exposed from the through hole to the inside of the lock hole is pressed into the lock hole. A bending locking member is mounted.

In this case, for the reason described later, the connecting member is opened at a position facing the opening of the through-hole on the inner peripheral surface of the locking hole, and is exposed inside from the through-hole. It is desirable to form an insertion hole through which the operation wire is inserted.

[0009]

In order to connect the operation wire and the member to be connected, first, the operation wire is inserted through the opening of the through hole formed on the outer surface of the member to be connected. In this insertion, the operation wire is inserted until it is exposed in the locking hole. Thereafter, the locking member is mounted in the locking hole. Then, the operation wire exposed in the locking hole is bent while being drawn into the locking hole with the periphery of the opening of the through hole in the inner peripheral surface of the locking hole as a fulcrum. When the operation wire is to be pulled out from this state, the operation wire is supported by the periphery of the opening of the through hole in the inner peripheral surface of the locking hole and the locking member. Thereby, the operation wire is locked in the locking hole, and the operation wire and another member are connected.

[0010] Further, the connection member is opened at a position facing the opening of the through hole on the inner peripheral surface of the locking hole,
In addition, by using an insertion wire through which the operation wire exposed from the through hole is formed, the operation wire can be more securely locked in the locking hole. That is, when inserting the operation wire from the opening of the through hole formed on the outer surface of the connected member, the operation wire exposed from the through hole into the locking hole is inserted to the insertion hole. Thereafter, the locking member is mounted in the locking hole. Then, the operation wire exposed in the locking hole is bent while being drawn into the locking hole with the peripheral edge of the opening of the through hole and the peripheral edge of the opening of the insertion hole in the inner peripheral surface of the locking hole as a fulcrum. When trying to pull out the operation wire from this state, the operation wire is supported by the periphery of the opening of the through hole, the periphery of the opening of the insertion hole, and the locking member on the inner peripheral surface of the locking hole. As described above, since the operation wire is also supported by the periphery of the opening of the insertion hole, a large frictional force is generated between the operation wire and the locking member, and the operation wire is more firmly engaged in the locking hole. Can be stopped.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of a connecting structure for operating wires according to the present invention. FIG. FIG.
Is an endoscope having a connection structure of the present invention (in-vivo diagnostic device)
The endoscope Z has an operation base 7. An insertion portion 5 is provided at a distal end portion of the operation base 7, and a distal end portion 6 is provided at a distal end portion of the insertion portion 5. The operation base 7 is provided with an eyepiece 7a and a bending operation knob 7b. When the bending operation knob 7b is rotated, the bending portion 4 bends as indicated by an imaginary line, so that a desired portion can be observed from the eyepiece 7a. The bending of the bending section 4 by the bending operation knob 7b is performed via the operation wires 9, 9. That is, FIG.
As shown in FIG. 7, a pulley 8 that rotates in conjunction with the rotation of the bending operation knob 7b is provided. The pulley 8 is wound with operation wires 9 made of, for example, a stainless steel stranded wire. Since the operation wires 9 and 9 have the same configuration, only one of them will be described below.

As shown in FIG. 12, the operating wire 9 is divided into two pulley-side operating wires 9a in the operating base 7.
And a bending portion side operation wire 9b. The left end of the pulley-side operation wire 9a is connected to the pulley 8. The right end of the bending section side operation wire 9b passes through the insertion section 5 and is fixed to the distal end of the bending section 4. The right end of the pulley-side operation wire 9a and the left end of the bending portion-side operation wire 9b are connected via a connection member 10.

Next, the connecting member 10 will be described. As shown in FIG.
0 (connected member) and a locking member 30. As shown in FIGS. 5 and 6, the main body 20 is formed in a columnar shape, and a locking hole 21 extending from the outer peripheral surface toward the inside is formed at the center in the axial direction. ing. The locking hole 21 has a locking hole 22 and a bearing hole 23 that are sequentially formed toward the inside. The locking hole 22 and the bearing hole 23 are formed so that their axes are aligned, and the former has a larger diameter than the latter.

As shown in FIG. 5, the main body 20 has a first through hole 24a and a second through hole 24b penetrating from the left and right end surfaces thereof to the inner peripheral surface of the locking hole portion 22, respectively. Is formed. As shown in FIGS. 5 and 6, these through holes 24a and 24b are formed along the axis x ₀ -x ₀ of the main body 20.
Are arranged at the same height and in parallel so as to be symmetrical to each other. The distance a ₀ (see FIG. 5) between the first through-hole 24a and the second through-hole 24b is smaller than the diameter of the locking hole 22 and larger than the diameter of the bearing hole 23. The diameters of the through holes 24a and 24b are slightly larger than the outer diameter of the operation wire 9 so that the operation wire 9 can be inserted into the first through hole 24a and the second through hole 24b. It has become.

A first insertion hole 26a is formed on the inner peripheral surface of the locking hole 22 at a position facing the opening 25a of the first through hole 24a. This first insertion hole 26a
Are formed so that their axes are aligned with the first through holes 24a. As a result, the first circumferential surface of the locking hole 22
The opening 25a of the through hole 24a and the opening 26c of the first insertion hole 26a face each other. On the other hand, the second through hole 24b in the inner peripheral surface of the locking hole 22
The second insertion hole 26 is located at a position facing the opening 25 b of the
b is formed. The second insertion hole 26b is
The through-hole 24b is formed so as to have the same axis as that of the through-hole 24b. Thereby, the opening 25b of the second through hole 24b and the opening 2b of the second insertion hole 26b on the inner peripheral surface of the locking hole 22 are formed.
6d face each other. The diameters of the insertion holes 26a and 26b are the same as those of the first and second through holes 24.
a, 24b are the same as the hole diameter. In FIG. 5, reference numeral 27 denotes a screw hole for fixing a fixing member 40 described later.

The locking member 30 is provided with a locking hole 21 of the main body 20.
And has a shaft portion 31 as shown in FIGS. 7 and 8. The shaft 31 is, as shown in FIG.
It is formed in a cylindrical shape, and its shaft diameter is
The diameter of the bearing hole 23 is substantially the same as or slightly smaller than the diameter of the bearing hole 23. Thus, the shaft portion 31 is rotatably supported by the bearing hole portion 23. As shown in FIG. 7, the axial dimension b of the shaft portion 31 is substantially the same as or slightly smaller than the axial dimension c of the bearing hole 23 (see FIG. 6). The upper end of the shaft 31 is connected to the center of the locking piece 32.

As shown in FIGS. 7 and 8, the locking piece 32 is formed in a flat plate shape that is long in the left-right direction, and its left and right ends are formed in a semicircular shape. Then, as shown in FIG.
Is longer than the interval a ₀ (see FIG. 5), and
2 is shorter than the hole diameter. The width dimension e of the locking piece 32 (see FIG. 8) is shorter than the distance a _0.
The thickness f (see FIG. 7) of the locking piece 32 is thicker than the length g (see FIG. 6) from the bottom surface of the locking hole 22 to the through hole 24a. In the center of the upper end of the locking piece 32, a knob 33 is provided.

As shown in FIGS. 7 and 8, the knob 33 is formed in a substantially columnar shape, and its left and right ends are formed in a semicircular shape. The dimension h (see FIG. 7) from the back surface of the locking piece 32 to the uppermost end of the knob 33 is longer than the dimension i (see FIG. 6) from the bottom surface of the locking hole 22 to the uppermost end of the main body 20. Has become. That is, as shown in FIG. 3, when the locking member 30 is attached to the locking hole 21 of the main body 20, the uppermost end of the knob 33 projects above the uppermost end of the main body 20. ing. The projecting portion is fixed by a fixing member 40 as shown in FIGS.

The fixing member 40 is provided with a locking hole 21 of the main body 20.
And to prevent the rotation of the locking member 30. As shown in FIG. 9, the locking member 30 is formed of a plate-like member that is long in the left-right direction, and as shown in FIG. It has an arc shape. The curvature of this arc is substantially the same as the curvature of the outer periphery of the main body 20. The dimensions of the right and left ends of the fixing member 40 are longer than the diameter of the locking hole 22 of the locking hole 21. As shown in FIG. 9, a vertically long slot 41 is formed in the center of the fixing member 40. The elongated hole 41 has a shape corresponding to the knob 33 of the locking member 30, and the upper and lower ends are formed in a semicircular shape. Small holes 42 and 42 are formed near the upper and lower ends of the long hole 41 so as to face each other. These small holes 42, 4
Reference numerals 2 are formed at positions corresponding to the screw holes 27 of the main body 20.

Thus, the pulley side operation wire 9a (hereinafter, referred to as a pulley side operation wire 9a)
Simply referred to as “operation wire 9a”. ) And the left end of the bending-section-side operation wire 9b (hereinafter simply referred to as “operation wire 9b”) to the connecting member 10, first, the first on the left and right end faces of the main body 20. Through hole 24a
And the operation wire 9 from each opening of the second through hole 24b.
a and 9b are inserted until they are exposed in the locking holes 22 of the locking holes 21, respectively.

Next, the operation wires 9a and 9b exposed in the locking hole portion 22 of the locking hole 21 are further inserted into the first insertion hole 26.
a and the second insertion hole 26b. Then, the operation wires 9 a and 9 b are connected to the locking holes 2 of the locking holes 21.
2 are arranged so as to cross in parallel with each other.

Thereafter, the shaft 31 of the locking member 30 is inserted into the bearing hole 23 of the locking hole 21. For this insertion,
The left and right ends of the locking piece 32 of the locking member 30 are inserted so as to face the axial direction of the main body 20 (indicated by a two-dot chain line in FIG. 4). At this time, the width e of the locking piece 32 (FIG. 8)
(See FIG. 5) is shorter than the distance a ₀ (see FIG. 5), so that the locking member 30 can be smoothly inserted into the locking hole 21.

Next, as shown in FIG. 4, the knob 33 of the locking member 30 is rotated rightward by about 90 °. Then, the dimension d of the left and right ends of the locking piece 32 of the locking member 30 (see FIG. 8)
Is longer than the distance a ₀ , the operation wires 9 a and
9b, these operating wires 9a,
9b is pressed and bent in the width direction. At this time, the operation wires 9a and 9b exposed in the locking hole 22 are drawn into the locking hole 22 while the first through holes 24a and the first through holes 24a in the inner peripheral surface of the locking hole 22 are respectively provided. The peripheral edge of each opening 25a, 26c of the insertion hole 26a and the peripheral edge of each opening 25b, 26d of the second through hole 24b and the second insertion hole 26b are pressed and bent.

When the operation wires 9a and 9b are to be pulled out from this state, the operation wires 9a and 9b exposed in the locking hole 22 are connected to the opening portions 26a of the first through holes 24a and 1 described above. 25a, 26c, the second through-hole 24b, and each opening 25b of the second insertion hole 26b.
26d and the left and right ends of the locking piece 32. At this time, as shown in FIG. 5, the knob 33 of the locking member 30 has its left and right ends located in the up-down direction, so that after the long hole 41 of the fixing member 40 is fitted into this knob 33, The fixing members 40 are fixed to the main body 20 by screwing the screws 42a, 42a from the small holes 42, 42, respectively. Thereby, the right end of the operation wire 9a and the left end of the operation wire 9b are connected to the connection member 10.

In order to remove the slack of the operation wires 9a, 9b generated after the connection, first, the screws 42a, 42a are loosened and the fixing member 40 is removed from the main body 20. next,
Turn the knob 33 of the locking member 30 by 90 degrees to the left or right.
By rotating, the left and right ends of the locking piece 32 of the locking member 30 are oriented in the axial direction of the main body 20 (indicated by a two-dot chain line in FIG. 4). Thereby, the engagement between the left and right ends of the locking piece 32 and the operation wires 9a, 9b is released, and the pushed and bent operation wires 9a, 9b are restored to the original state. Thereafter, the operation wires 9a and 9b are pushed into the locking holes 22 by the amount of the slack. Thereafter, the operation wires 9a and 9b are connected to the connection member 10 in the same manner as described above. Thereby, slack of the operation wires 9a and 9b generated after the connection can be removed.

According to the connecting structure of the operation wires having the above-described structure, the operation wires 9a and 9b and the right and left ends of the locking pieces 32 for pushing and bending the operation wires 9a and 9b are obtained only by rotating the knob 33 of the locking member 30. It becomes possible to engage and disengage the unit. Therefore, the operation wires 9a, 9b can be easily connected to the connecting member 10, and even if the operation wires 9a, 9b are loosened after the connection, the slack can be easily removed.

The operation wires 9a and 9b exposed in the locking hole 22 are connected to the first through hole 24a and the opening 25a of the first insertion hole 26a in the inner peripheral surface of the locking hole 22.
26c, the second through hole 24b, the periphery of each of the openings 25b, 26d of the second insertion hole 26b, and the locking piece 3
2 and the left and right ends. Therefore, the operation wires 9a and 9b exposed in the locking hole 22 and the locking piece 3
A large frictional force is generated on each joint surface with the left and right end portions of No. 2. For this reason, the operation wires 9a and 9b can be firmly connected to the connecting member 10.

Furthermore, the operating wires 9a and 9b are only pushed and bent by the left and right ends of the locking piece 32, so that
Locked within 1. Therefore, it is possible to prevent the wire from being broken due to the twist of the end portion and the end of the operation wire being broken as in the related art.

Next, another embodiment of the present invention will be described. The connection structure of the operation wires shown in FIGS. 13 to 16 is an example in which the operation wires 9a and 9b are connected to the connection member 50, and the connection member 50 is connected to the main body 60 (member to be connected). And a locking member 70. Main unit 60
As shown in FIG. 13, a flat surface 61 that is continuous from the left end to the right end is formed on the outer peripheral surface thereof. At the center of the flat surface 61, as shown in FIG. 15, a locking hole 62 extending toward the inside is formed. This locking hole 62
Has a locking hole 63 and a bearing hole 64 that are sequentially formed toward the inside. Locking hole 63 and bearing hole 64
Are formed so that their axes are aligned, and the former has a larger hole diameter than the latter.

Further, the first through hole 24a, the second through hole 24b, and the first through hole 24, which are respectively opened on the inner peripheral surface of the locking hole 63, are formed in the main body 60 in the same manner as in the above embodiment. 26a and a second insertion hole 26b are formed.
However, the distance a ₁ (see FIG. 16) between the first through hole 24a and the second through hole 24b is smaller than the hole diameter of the bearing hole 64. As shown in FIGS. 13 and 15, a locking hole 63 is provided above one side of the center of the main body 60.
A screw hole 65 that penetrates to the inner peripheral surface is formed.

The locking member 70 has a head 71 as shown in FIGS. The head portion 71 is formed in a columnar shape, and the outer diameter thereof is substantially the same as or slightly smaller than the diameter of the locking hole 63. As shown in FIG. 15, the upper end surface of the head 71 is flush with the flat surface 61 when the locking member 70 is mounted in the locking hole 62. 13 and 15 in the circumferential direction of the head 71.
As shown in FIG. 7, the groove 71a is formed continuously. The groove 71a is formed at a position corresponding to the screw hole 65. The width of the groove 71a is substantially the same as or slightly larger than the diameter of the screw hole 65. At the center of the upper end surface of the head 71, a plate-shaped knob 71b is formed to protrude upward. On the other hand, the lower end surface of the head 71 has a flat surface, and when the locking member 70 is attached to the locking hole 62,
(Refer to FIG. 15), it is located above the first and second through holes 24a and 24b. In the center of the lower end face of the head 71,
A bearing hole 72 extending downward is formed.

The locking shaft portion 72 is formed in a cylindrical shape, and as shown in FIG.
The hole diameter is almost the same as or slightly smaller than the hole diameter, and is larger than the interval a ₁ (see FIG. 16). A plurality of ridges 72a extending along the axial direction are formed on the outer circumference of the locking shaft 72 over the entire circumference. The lower end of the locking shaft 72 is in a state where the locking member 70 is mounted in the locking hole 62 (FIG. 1).
5), and are located below the first and second through holes 24a, 24b. Further, a tapered shaft portion 73 extending downward is formed at a lower end portion of the locking shaft portion 72.

As shown in FIGS. 13 and 15, the tapered shaft portion 73 is formed so that its diameter decreases downward from the lower end portion of the locking shaft portion 72. In a state in which 70 is mounted in the locking hole 62 (see FIG. 15), it comes into contact with the bottom surface of the bearing hole 64. The shaft diameter j (see FIG. 15) of the lower end of the tapered shaft portion 73 is
Distance a between first through hole 24a and second through hole 24b
₁ (see FIG. 16).

In order to connect the right end of the operation wire 9a and the left end of the operation wire 9b to the connection member 50,
First, the first through holes 24 on the left and right end faces of the main body 60 are formed.
The operation wires 9a and 9b are inserted from the respective openings of the first through hole 24a and the second through hole 24b until they are exposed in the locking holes 63 of the locking holes 62, respectively.

Next, the operation wires 9a and 9b exposed in the locking holes 63 of the locking holes 62 are further inserted into the first insertion holes 26.
a and the second insertion hole 26b. Then, the operation wires 9a and 9b are connected to the locking holes 6 of the locking holes 62.
3 are arranged so as to cross in parallel with each other (see FIG. 13).

Thereafter, the locking member 70 is mounted in the locking hole 62. At the time of this mounting, the mounting is performed such that the lower end surface of the tapered shaft portion 73 of the locking member 70 contacts the bottom surface of the bearing hole 64 of the locking hole 62. At this time, since the shaft diameter j (FIG. 15) of the lower end of the tapered shaft portion 73 is larger than the interval a ₁ (see FIG. 15), it is necessary to mount the locking member 70 in the locking hole 62 smoothly. Can be.

When the locking member 70 is mounted in the locking hole 62,
Since the shaft diameter of the locking shaft 72 is larger than the distance a ₁ (see FIG. 15), the operation wires 9 a and 9 b exposed in the locking hole 63 gradually increase in width due to the outer periphery of the tapered shaft 73. 15 and 16 in FIG.
Are pushed and bent in a state of being engaged with the ridges 72a of the locking shaft portion 74. At this time, the operation wires 9a and 9b exposed in the locking hole 63 are drawn into the locking hole 63 while the first through holes 24a and the first The peripheral edge of each opening 25a, 26c of the insertion hole 26a and the peripheral edge of each opening 25b, 26d of the second through hole 24b and the second insertion hole 26b are pressed and bent.

When the operation wires 9a and 9b are to be pulled out from this state, the operation wires 9a and 9b exposed in the locking hole 63 are opened by the opening of the first through hole 24a and the first insertion hole 26a. Peripheral portions of the portions 25a, 26c and the second
Openings 25 of the through holes 24b and the second insertion holes 26b
b, 26d and the ridges 72a of the locking shaft 74. Thereafter, as shown in FIGS. 14 and 15, the screw 65 a is screwed into the screw hole 65, and the front end thereof is pressed strongly against the groove 71 a to fix the locking member 70 in the locking hole 62. Thus, the right end of the operation wire 9a and the left end of the operation wire 9b are connected to the connection member 50.

In order to remove the slack of the operation wires 9a and 9b generated after the connection, first, the screws 65a are loosened to separate the respective tips from the grooves 71a. Next, knob 7
Holding the member 1b, the locking member 70 is rotated clockwise in FIGS. Then, the operation wires 9a, 9b
Are drawn into the locking holes 63 while being engaged with the ridges 72a of the locking shaft 74. Then, again, screw 65a
Is screwed, and the operation wires 9a and 9b are connected to the connection member 50 in the same manner as described above. Thereby, slack of the operation wires 9a and 9b generated after the connection can be removed.

In the connection structure of the operation wires having the above-described structure, the operation wires 9 a, 9 exposed in the engagement hole 63 only by attaching the engagement member 70 to the engagement hole 62 of the main body 60.
b can be locked in the locking hole 63. Therefore, the operation wires 9a and 9b can be easily connected to the connection member 50.

The operating wires 9a and 9b and the locking shaft 7
The locking member 70 remains engaged with the second ridge 72a.
The operation wires 9a and 9b are locked by simply rotating
3 can be retracted. Therefore, the slack of the operation wires 9a and 9b generated after the connection can be easily removed.

The connection structure of the operation wires shown in FIGS. 17 to 20 is an example in which the operation wires 9a and 9b are connected to the connection member 80, and the connection member 80 is connected to the main body (connected). (Member) 90 and a locking member 100. As shown in FIG. 17, the main body 90 has a locking hole 92 extending from the outer peripheral surface toward the inside.
The locking hole 92 has a locking hole 93 and a bearing hole 94 that are sequentially formed toward the inside. Lock hole 93
As shown in FIG. 17 and FIG. 20, the cross section is formed in a rectangular shape that is long in the left-right direction. Both side edges (indicated by two-dot chain lines in FIG. 17) of the locking hole 93 in the width direction are cut out downward, and the bottom thereof forms a flat surface 91. This flat surface 91 is located above the bottom surface of the locking hole 93. As shown in FIG. 20, the bearing hole 94 has a rectangular cross section that is long in the width direction, and its width direction dimension is shorter than that of the locking hole 93. At the center of the bottom surface of the bearing hole 94, a screw hole 9 is provided.
5 are formed.

Further, the first through hole 24a, the second through hole 24b, and the first insertion hole, which are respectively opened in the inner peripheral surface of the locking hole 93, are formed in the main body 90 in the same manner as in the above embodiment. 26a and a second insertion hole 26b are formed.
The distance a ₂ (see FIG. 20) between the first through-hole 24a and the second through-hole 24b is smaller than the width k (see FIG. 19) of the bearing hole 94 in the width direction.

The locking member 100 has a head 110 as shown in FIGS. The head 110
As shown in FIGS. 18 and 19, in a state in which the locking member 100 is mounted in the locking hole 92 of the main body 90, the upper end surface is an arc surface that forms the same circumferential surface as the outer peripheral surface of the main body 90. Is formed. As shown in FIG. 17, the horizontal dimension of the head 110 is the same as or slightly shorter than that of the locking hole 93. On the other hand, the lower end surface of the head 110 is a flat surface, and both edges in the width direction are in contact with the flat surface 91. A shaft portion 120 extending downward is formed at the center of the lower end surface of the head portion 110.

The shaft portion 120 is formed so as to correspond to the bearing hole portion 94, and as shown in FIG. 20, has a rectangular cross section that is long in the width direction. Shaft 120
The dimensions in the width direction is longer than the distance a _2. Further, the lower end sides in the width direction of the shaft portion 120 is chamfered made, thereby, in the width direction of the lower end portion of the shaft portion 120 dimension l (see FIG. 19) is shorter than the distance a ₂ . The locking member 100 has a through hole 1 that penetrates from the center of the upper end surface of the head 110 to the lower end surface of the shaft 120.
01 is formed, and this through-hole 101 is
In the state where the locking member 100 is mounted on the second screw hole 2 (see FIG. 19), the screw hole 95 is formed so as to coincide with the axis of the screw hole 95 and has a diameter slightly larger than the diameter of the screw hole 95. I have.

In order to connect the right end of the operation wire 9a and the left end of the operation wire 9b to the connection member 80,
First, the first through-holes 24 on the left and right end faces of the main body 90 are formed.
The operation wires 9a and 9b are inserted from the respective openings of the first through hole 24a and the second through hole 24b until they are exposed in the locking holes 93 of the locking holes 92, respectively.

Next, the operation wires 9a and 9b exposed in the locking holes 93 of the locking holes 92 are further inserted into the first insertion holes 26.
a and the second insertion hole 26b. Then, the operation wires 9 a and 9 b are inserted into the locking holes 9 of the locking holes 92.
3 are arranged so as to cross in parallel with each other (see FIG. 17).

Thereafter, as shown in FIGS. 18 and 19, the locking member 100 is mounted in the locking hole 62 of the main body 90. At this time, since the width dimension l of the lower end of the shaft portion 120 is shorter than the distance a _2, it is possible to mount the locking member 100 to smoothly locking hole 92.

[0049] When mounting the locking member 100 in the locking hole 92, the width dimension of the shaft portion 120 is longer than the distance a _2, the operation wire 9a exposed in the locking hole portion 93, 9b Is gradually pushed and bent in the width direction by a chamfered portion formed at the lower end of the shaft portion 120, and finally, FIG.
As shown in FIG. 9 and FIG. 20, it is pushed and bent while being engaged with the shaft portion 120. At this time, the operation wires 9a and 9b exposed in the locking hole 93 are respectively drawn into the locking hole 93 while the first operation wires 9a and 9b are in the first inner circumferential surface of the locking hole 93.
Openings 2 of the through hole 24a and the first insertion hole 26a
It is pushed and bent with the peripheral edges of 5a and 26c and the peripheral edges of the openings 25b and 26d of the second through hole 24b and the second insertion hole 26b as fulcrums.

When the operation wires 9a and 9b are to be pulled out from this state, the operation wires 9a and 9b exposed in the locking hole 93 are removed from the first through holes 24a and the second through holes 24a in the inner peripheral surface of the locking hole 93. Each opening 25a, 2 of one insertion hole 26a
6c and the second through hole 24b, the second insertion hole 2
6b, the periphery of each opening 25b, 26d and the shaft 120
Supported by At this time, since the through-hole 101 and the screw hole 95 are located on the same axis, as shown in FIGS. 18 and 19, the screw 102 is screwed from the through-hole 101 to attach the locking member 100 to the main body 90. Fix it. Thereby, the right end of the operation wire 9a and the left end of the operation wire 9b are connected to the connection member 80.

In order to remove the slack of the operation wires 9a and 9b generated after the connection, first, the screw 102 is loosened and the locking member 100 is removed from the main body 90. Then, the engagement between the shaft 120 and the operation wires 9a and 9b is released, and the pushed and bent operation wires 9a and 9b are restored to the original state. Thereafter, the operation wires 9a, 9b are removed by the amount of the slack.
Are pushed into the locking holes 93 respectively. Thereafter, the operation wires 9a and 9b are connected to the connection member 80 in the same manner as described above. Thereby, the operation wires 9a, 9 generated after the connection are formed.
The slack of b can be removed.

In the connection structure of the operation wire having the above-described structure, the operation wire 9 a, which is exposed in the engagement hole 93, is simply mounted by attaching the engagement member 100 to the engagement hole 92 of the main body 90.
9b can be locked in the locking hole 93. Therefore, the operation wires 9a, 9b can be easily connected to the connection member 80, and the slack of the operation wires 9a, 9b generated after the connection can be easily removed.

In this embodiment, when fixing the locking member 100 to the main body 90, the screw 102 is screwed in the vertical direction. However, as shown in FIGS. By screwing the locking member 1
00 'can be fixed to the main body 90'. That is, as shown in FIG. 21 and FIG.
A through-hole 104 penetrating from the left end surface of 0 'to the inner peripheral surface of the locking hole 93 is formed, and the through-hole 104 is opened at a position facing the opening of the locking hole 93 on the inner peripheral surface side. The screw hole 105 is formed so as to coincide with the axis of the through hole 104. Then, a through hole 106 penetrating from the left end surface to the right end surface is formed in the shaft portion 120 'of the locking member 100'. This through hole 106 allows the locking member 100 ′ to
0 '(see FIG. 23).
4 and the screw hole 105.

As shown in FIGS. 24 and 25,
Instead of the screw, the locking member 100 ″ is attached to the main body 90 ″ using a ring 107 made of a material such as metal or resin.
Can also be fixed. In this case, as shown in FIG. 24, the outer diameter of the left and right ends of the main body 90 ″ is made larger by the thickness of the ring 107, and the outer diameter of the ring 107 is set to the left and right ends of the main body 90 ″. Make the same as the outer diameter. Locking member 1
00 "in the locking hole 92 of the main body 90",
As shown in FIG. 5, a ring 107 is provided at the center of the main body 90 ″.
Into the main body portion 9.
At this time, the outer peripheral surfaces of the left and right ends of the main body portion 90 "and the outer peripheral surface of the ring 107 form the same circumferential surface. When a metal is used as the material of the ring 107, a slit (not shown) extending in the axial direction may be formed on the outer peripheral surface of the ring 107.

The connection structure of the operation wires shown in FIGS. 26 to 29 shows a case where the operation wires 9a and 9b are connected to the connection member 130. The connection member 130 is composed of a main body (connected member) 140. And a locking member 150. As shown in FIG. 26, the main body 140 has a locking hole 141 extending from the outer peripheral surface toward the inside. As shown in FIGS. 26 and 29 (b), the locking hole 141 has a rectangular cross section that is long in the left-right direction. 26 and 2 in the width direction of the locking hole 141.
8 is indicated by a two-dot chain line. ) Is notched downward, and the bottom thereof forms a flat surface 142. The flat surface 142 is located above the bottom surface of the locking hole 141 as shown in FIG. Further, a screw hole 143 is formed at the center of the bottom surface of the locking hole 141.

Also, the main body 140 has a first opening which opens on the inner peripheral surface of the locking hole 141, as in the above embodiment.
And a second through-hole 24a, a second through-hole 24b, and a first through-hole 26a and a second through-hole 26b. The first and second through holes 24a and 24b are located above the flat surface 142.

The locking member 150 has a head 160 as shown in FIGS. 26 and 28. The head 160
As shown in FIG. 27, when the locking member 150 is mounted in the locking hole 141 of the main body 140, the upper end surface is formed as an arc surface that forms the same circumferential surface as the outer peripheral surface of the main body 140. I have. On the other hand, the lower end surface of the head 160
As shown in FIG. 7, the flat surface has a flat surface, and both edges in the width direction come into contact with the flat surface 142 of the locking hole 142. Also, as shown in FIG. 29A, the length of the head 160 in the left-right direction is the same as or slightly shorter than that of the locking hole 141. A shaft 170 extending downward is formed at the center of the lower end surface of the head 160.

As shown in FIGS. 26 and 29 (b), the shaft 170 has a rectangular cross section that is long in the left-right direction, and its width dimension is the same as that of the first through hole 24a. It is shorter than the distance a ₃ between the second through hole 24b (see FIG. 28). The length of the shaft portion 170 in the left-right direction is
It is the same as 0. 26 and 28, a through-hole 151 penetrating from the center of the upper end surface of the head 160 to the lower end surface of the shaft 170 is formed in the locking member 150. The through-hole 151 is provided with the screw hole 1 when the locking member 150 is attached to the locking hole 141.
43 so as to coincide with the axis of
The diameter of the hole is slightly larger than the diameter of the screw hole 143.

To connect the right end of the operation wire 9a and the left end of the operation wire 9b to the connection member 130, first, the first through hole 24a and the second The operation wires 9a and 9b are inserted from the respective openings of the through hole 24b until they are exposed in the locking holes 141, respectively.

Next, the operation wires 9a and 9b exposed in the locking hole 141 are further connected to the first insertion hole 26a and the second insertion hole 26a.
Into the insertion holes 26b. Then, the operation wires 9a and 9b are arranged so as to cross the inside of the locking hole 141 in parallel with each other (see FIG. 26).

Thereafter, as shown in FIGS. 27 and 28, the locking member 150 is mounted in the locking hole 141. At this time, since the widthwise dimension of the shaft portion 170 is shorter than the distance a _3, it is possible to mount the locking member 150 to smoothly locking hole 141. At this time, FIG.
By chamfering the portions m of the lower end surface of the head 160 that contact the operation wires 9a and 9b as shown in FIG. 5, the locking member 150 can be mounted more smoothly.

When the locking member 150 is mounted in the locking hole 141, the first through hole 24a and the second through hole 24b are located above the flat surface 142, so that the locking hole 141
The operation wires 9a and 9b exposed inside the
28 and 29 is engaged with the lower end surface of the head 160 and is bent downward to obtain the state shown in FIGS. At this time, the operation wires 9a and 9b exposed in the locking hole 141 are
The first through-hole 24a and the first through-hole 26 on the inner peripheral surface of the locking hole 141 respectively while being drawn into the inside 41.
a of the openings 25a, 26c, and the openings 25b, 2 of the second through holes 24b and the second insertion holes 26b.
It is pushed and bent with the periphery of 6d as a fulcrum.

When the operation wires 9a and 9b are to be pulled out from this state, the operation wires 9a and 9b exposed in the locking holes 141 are respectively opened by the first through holes 24a and the first insertion holes 26a. 25a, 26c and second
Openings 25 of the through holes 24b and the second insertion holes 26b
b, 26 d and the lower end surface of the head 160 of the locking member 150. At this time, the through hole 151
Since the screw hole 143 and the screw hole 143 are located on the same axis, as shown in FIGS. 27 and 28, the screw 152 is screwed into the through hole 151 to fix the locking member 150 to the main body 140. Thereby, the right end of the operation wire 9a and the left end of the operation wire 9b are connected to the connection member 130.

In order to remove the slack of the operation wires 9a and 9b generated after the connection, first, the screw 152 is loosened to remove the locking member 150 from the main body 140. Then, the engagement between the lower end surface of the head 170 and the operation wires 9a, 9b is released, and the pushed and bent operation wires 9a, 9b are restored to the original state. Thereafter, the operation wires 9a and 9b are pushed into the locking holes 141 by the amount of the slack. Thereafter, the operation wires 9a and 9b are connected to the connection member 130 in the same manner as described above. Thereby, slack of the operation wires 9a and 9b generated after the connection can be removed.

The connection structure for operating wires shown in FIGS. 30 to 34 is provided with racks 180 and 180 provided in the operating base 7.
In this example, two operation wires 9 'and 9' are connected to each other. The racks 180, 180 respectively engage with pinions 182 that rotate in conjunction with rotation of a bending operation lever 181 provided on the operation base 7,
The rotation of the pinion 182 causes the pinion 182 to move forward and backward in opposite directions. One ends of the operation wires 9 ', 9' are connected to racks 180, 180, respectively.
, And the other end thereof is fixed to the distal end of the curved portion 4 (see FIG. 11) through the inside of the insertion portion 5 (see FIG. 11). Since the racks 180 and 180 have the same configuration, only one of them will be described below with reference to FIGS. Also, rack 1
Since the structure of the connecting member 80 is substantially the same as that of the connecting member 80 described above, only the differences will be described, and the same portions will be denoted by the same reference numerals in each drawing and description thereof will be omitted. The rack 180 is, as shown in FIG.
The rack main body 190 has a first through hole 24 ′ penetrating from the left end surface thereof to the inner peripheral surface of the locking hole 92, as shown in FIGS. 31 and 34. a and a second through hole 24'b are formed.
These through holes 24'a and 24'b are provided in FIG. 33 and FIG.
As shown in FIG. 4, the racks are arranged at the same level and parallel to each other so as to be symmetrical with respect to the axis x ₁ -x ₁ of the rack body 190.

The rack body 190 has a locking hole 93.
A first insertion hole 26'a opening at a position facing each of the openings 25'a, 25'b of the first through hole 24'a and the second through hole 24'b on the inner peripheral surface of A second insertion hole 26'b is formed. These insertion holes 2
6'a and 26'b are formed in such a manner that their axes are aligned with the through holes 24'a and 24'b, respectively.

Next, referring to FIGS. 35 to 42, two operation wires 9 ', 9' are connected to the rack 200 and the rack 23.
0, the same parts as those of the rack 180 described above are denoted by the same reference numerals in the respective drawings, and description thereof will be omitted. The connection structure of the operation wires shown in FIGS. 35 to 38 shows a case where two operation wires 9 ′ and 9 ′ are connected to the rack 200. This rack 2
00 is the rack body (connected member) 210 and the locking member 22
0. As shown in FIG. 35, the rack body 210 has a locking hole 2 extending from the outer peripheral surface toward the inside.
11 are formed. The locking hole 211 is formed by a locking hole 212 and a bearing hole 213 that are sequentially formed inward.
And The locking hole 212 and the bearing hole 213 are formed so that their axes are aligned. Bearing hole 213
38, as shown in FIG. 38, the cross section has a rhombic shape that is long in the width direction, and the length in the width direction is shorter than the hole diameter of the locking hole 212.

The locking member 220 has a head 221 as shown in FIGS. 35 and 37. The head 221 is
As shown in FIG. 36, the locking member 220 is
The upper end surface is formed as an arc surface that forms the same circumferential surface as the outer peripheral surface of the rack main body 210 in a state where the outer peripheral surface of the rack main body 210 is mounted in the 0 engaging hole 211. On the other hand, as shown in FIG. 37, the lower end surface of the head 221 has a flat surface, and a shaft 222 extending downward is formed at the center thereof.

The shaft portion 222 has a shape corresponding to the bearing hole portion 213, and as shown in FIG. 38, its cross-sectional shape is formed in a rhombus shape long in the width direction. Shaft 222
The widthwise dimension of, as shown in FIG. 38, is longer than the distance a ₂ between the first through hole 24'a and a second through hole 24'b. Further, as shown in FIGS. 35 and 37, the lower end of the shaft portion 222 is chamfered,
Thus, the width dimension of the lower end portion of the shaft portion 222 is set to be slightly shorter than the distance a _2.

The connecting structure of operation wires shown in FIGS. 39 to 42 shows a case in which two operation wires 9 ', 9' are connected to a rack 230. ) 240 and a locking member 250. As shown in FIG. 39, the rack body 240 has a locking hole 241 extending from the outer peripheral surface toward the inside. The locking hole 241 has a locking hole 242 and a bearing hole 243 sequentially formed inward. The locking hole 242 and the bearing hole 243 are formed so that their axes are aligned, and the former has a larger diameter than the latter.

The locking member 250 has a head 251 as shown in FIGS. 39 and 41.
As shown in FIG. 40 and FIG.
Is mounted in the locking hole 241 of the rack body 240, the upper end surface thereof is formed as an arc surface forming the same circumferential surface as the outer peripheral surface of the rack body 240. On the other hand, head 2
The lower end surface of the locking member 51 has a flat surface, and the locking shaft portion 252 and the tapered shaft portion 25
3 are formed. Since the locking shaft 252 and the tapered shaft 253 are the same as the locking shaft 72 and the tapered shaft 73 of the locking member 70 in the connecting member 50 described above, The same reference numerals are given to the drawings, and the description is omitted.

The connection structure of the operation wires shown in FIGS. 43 to 47 is an example in which one operation wire 9 ′ is connected to each of the racks 260, 260. In addition,
Since the racks 260 have the same configuration,
In the following, only one of them will be described. The structure of the rack 260 is almost the same as that of the connecting member 10 described above, and therefore, only the differences will be described, and the same portions will be denoted by the same reference numerals in the drawings and description thereof will be omitted. As shown in FIG. 44, the rack 260 includes a rack body (connected member) 270 and a locking member 280. As shown in FIGS. 44 and 46, the rack body 270 has a locking hole 27 extending from the outer peripheral surface toward the inside.
1 is formed. As shown in FIG. 46, locking holes 272 formed sequentially toward the inside are formed in locking holes 271.
And a bearing hole 273. The locking hole 272 is
As shown in FIG. 47, the cross-sectional shape is formed in a semicircular shape. The straight portion 2 corresponding to the chord of the locking hole 272
74 is disposed so as to be parallel to the axis of the rack main body 270. On the other hand, the bearing hole 273 is
47, as shown in FIG. 47, the cross-sectional shape is circular, and the straight portion 274 is disposed substantially at the center thereof so that the outer periphery thereof is in contact with the straight portion 274.

As shown in FIG. 47, the rack main body 270 is formed with a through hole 24 penetrating from the left end surface thereof to a surface corresponding to the arc of the locking hole 272. The distance a ₄ (see FIGS. 46 and 47) from the through hole 24 to the linear portion is wider than the diameter of the bearing hole 273. Further, the locking holes 272 are formed in the rack body 270.
An insertion hole 26 is formed at a position facing the opening 25 of the through hole 24 in such a manner that the axis thereof is aligned with the through hole 24.

The locking member 280 has a shaft 281 as shown in FIGS. 44 and 46. The shaft 281 is
As shown in FIG. 44, it is formed in a columnar shape,
The diameter of the shaft is substantially the same as or slightly smaller than the diameter of the bearing hole 273 of the locking hole 271. Thereby, the shaft portion 281
Are rotatably supported by the bearing hole 273. The upper end of the shaft 281 is connected to the right end of the locking piece 282.

As shown in FIG. 44, the locking piece 282 is formed in a plate shape that is long in the left-right direction, and its left and right ends are formed in a semicircular shape. The dimension of the locking piece 281 in the width direction is the same as the shaft diameter of the shaft 281, and the outer circumference of the right end of the locking piece 281 is flush with the outer circumference of the shaft 281. Then, as shown in FIGS. 46 and 47, the dimensions of both end portions of the engaging piece 282 is longer than the distance a _4, and the width dimension n of the engaging hole 272 (see FIGS. 46 and 47) It is shorter. Locking piece 2
The thickness of the through hole 24 a
Is thicker than the length up to the opening 25.

FIGS. 48 to 51 show a case where the operation wire 9 'is connected to the rack 290. The rack 290 is composed of a rack body (connected member) 300 and a locking member 3.
10 is provided. As shown in FIG. 48, the rack body 300 has a locking hole 301 extending from the outer peripheral surface toward the inside. This locking hole 301 is shown in FIG.
As shown in FIG. 51, the cross-sectional shape is a rectangle that is long in the left-right direction. Further, one side surface (left side surface in FIG. 50) of the locking hole 301 in the width direction is a flat surface. On the other hand, the lower end of the other side surface in the width direction of the locking hole 301 is
As shown in FIG. 50, it is formed stepwise. As a result, an upper stepped surface 302 and a lower stepped surface 303 are formed at the lower end of the locking hole 301, and the first locking hole 301a and the second locking, which gradually become narrower toward the inside, are formed. Hole 3
01b and a third locking hole 301c are respectively formed. The level difference between the upper step surface 302 and the lower step surface 303 is larger than the outer diameter of the operation wire 9 '.

Further, similarly to the rack main body 270 of the rack 260, the rack main body 300 has a through hole 24 penetrating from the left end surface to the inner peripheral surface of the locking hole 301, and its axis coincides with the through hole 24. The insertion hole 26 formed by this is formed (see FIG. 51). Then, as shown in FIG. 50, the locking hole 301 is viewed from one side in the width direction of the locking hole 301.
A to the opening 25 of the through hole 24 on the inner peripheral surface of
₅ is smaller than the dimension a ₆ from one side surface of the locking hole 301 in the width direction to the other side surface of the third locking hole 301c.
In addition, the opening 25 is located below the upper step surface 302,
Further, it is located above the lower step surface 303. In the drawings, reference numerals 304 and 304 denote fixing members 35 described later.
0 is a screw hole for fixing 0 to the rack body 300.

The locking member 310 has a head portion 320 as shown in FIGS. The head 320
The first locking hole 301a has a shape corresponding to that of the first locking hole 301a. As shown in FIG. It is formed as an arc surface forming the same circumferential surface as the outer peripheral surface. Further, a flat surface is formed on the lower end surface of the head 320, and this surface is formed on the upper step surface 30.
2. A wedge 330 extending downward is formed on the lower end surface of the head 320.

As shown in FIGS. 48 and 50, the wedge portion 330 has a flat surface on one side in the width direction.
It is flush with one side in the width direction of the head 320. Wedge 3
As shown in FIG. 50, an inclined surface 340 having an arc-shaped cross section (see FIG. 51) gradually narrowing downward is formed on the other side surface in the width direction of 30. The width dimension of the upper end of the wedge 330 is substantially the same as the length a ₆ , while the width dimension of the lower end of the wedge 330 is the dimension a
It is shorter than ₅ .

Note that reference numeral 350 in FIGS.
The locking member 310 is connected to the locking hole 301 of the rack body 300.
The head 320 of the locking member 310
The locking member 310 covers the upper end surface of the
Is a fixing member for preventing detachment from the locking hole 301. This fixing member 350, as shown in FIG.
It is formed of a plate-like member that is long in the left-right direction, and has a circular cross section as shown in FIG. The curvature of this arc is substantially the same as the curvature of the outer peripheral surface of the rack body 300. The size of the fixing member 350 in the left-right direction is the size of the locking hole 3.
01 is longer than the horizontal dimension. Fixing member 3
In the center of both sides in the width direction of 50, small holes 351 are formed to face each other. These small holes 351,
Reference numeral 351 is formed at a position corresponding to the screw holes 304, 304, respectively.

In order to connect the operation wire 9 ′ to the rack 290, first, the operation wire 9 ′ is inserted through the opening of the through hole 24 on the left end surface of the rack body 300.
Insert until exposed in 1.

Next, the operation wire 9 ′ exposed in the locking hole 301 is further inserted into the insertion hole 26. Then, the operation wire 9 ′ is disposed so as to cross the inside of the locking hole 301.
(See FIG. 48).

Thereafter, the locking member 310 is inserted into the locking hole 301.
Attach. In this attachment, the attachment is performed such that the lower end surface of the head 320 of the engagement member 310 abuts on the upper step surface 302 of the engagement plan 301. The width dimension of the lower end of the wedge portion 330, since that is shorter than the dimension a _5, it is possible to mount the locking member 310 to smoothly latch hole 301.

[0084] When mounting the locking member 310 into the latch hole 301, the width dimension of the upper end of the wedge portion 330, since that is substantially the same as the dimension a _6, exposed to the latch hole 301 The operating wire 9 ′ is gradually pushed and bent in the width direction while engaging with the inclined portion 340 of the wedge portion 330, and finally, as shown in FIG.
The state shown in FIG. At this time, the operation wire 9 ′ exposed in the locking hole 301 is drawn into the locking hole 301 while the openings 25 and 26 ′ of the through hole 24 and the insertion hole 26 in the inner peripheral surface of the locking hole 301. Can be pushed and bent with the periphery of the as a fulcrum.

When it is attempted to pull out the operation wire 9 ′ from this state, the operation wire 9 ′ exposed in the locking hole 301 is
Are the peripheral edges of the openings 25 and 26 ′ of the through hole 24 and the insertion hole 26 on the inner peripheral surface in the locking hole 301 and the wedge portion 3.
30 are supported by the inclined surface 340. Thereafter, the fixing member 350 is attached to the rack body 300 so as to cover the head 320 of the locking member 310, and the small holes 3 of the fixing member 350 are formed.
The fixing members 350 are fixed to the rack body 300 by screwing the screws 305a and 305a from 51 and 351 respectively. As a result, the operation wire 9 'is connected to the rack 290.

In order to remove the slack of the operation wire 9 'generated after the connection, first, the screws 305a, 305a are loosened and the fixing member 350 is removed from the rack body 300.
Next, the locking member 310 is removed from the locking hole 301. Then, the engagement between the inclined surface 340 of the wedge portion 330 of the locking member 310 and the operation wire 9 'is released, and the pushed and bent operation wire 9' is restored to the original state. Thereafter, the operation wire 9 ′ is pushed into the insertion hole 26 by the amount of the slack. Thereafter, the operation wire 9 'is connected to the rack 290 in the same manner as described above. Thereby, the operation wire 9 'generated after the connection is performed.
Can be removed.

The connection structure of the operation wire shown in FIGS. 52 to 54 is an example in which the operation wire 9 'is connected to the pulley 360. The structure of the pulley 360 is the same as that of the above-described rack except that the through hole 24 is formed in the radial direction from the groove 361 of the pulley body (connected member) 370 and the fixing member 380 is formed in a flat plate shape. 260
Therefore, the same parts are denoted by the same reference numerals in the drawings, and description thereof will be omitted.

FIGS. 55 to 57 show the case where the operation wire 9 'is connected to the pulley 390. FIGS. The structure of the pulley 390 is the same as that of the groove 4 of the pulley body (connected member) 400.
01 except that the through hole 24 is formed in the radial direction from FIG. 01 and the head 420 of the locking member 410 is formed in a flat plate shape and fixed to the pulley main body 400 by screwing. Since they are the same, the same parts are denoted by the same reference numerals in the respective drawings, and description thereof will be omitted.

[0089]

According to the connecting structure of the operation wire for an in-vivo diagnostic device of the present invention, the connected member has a locking hole having one end opened to the outside and the other end extending inward, and one end formed into the outside. And the other end is opened on the inner peripheral surface of the locking hole, and a through hole through which the operation wire is inserted is formed inside, and the locking hole is inserted into the locking hole from the through hole of the operation wire. A locking member is attached to engage the exposed portion to push and bend the portion. For this reason, the operation wire can be easily and firmly connected, and the slack of the operation wire after the connection can be easily removed. Damage can be prevented.

Further, an insertion hole is formed in the connected member at a position facing the opening of the through hole on the inner peripheral surface of the locking hole, and an operation wire exposed from the through hole is inserted therein. As a result, it is possible to obtain an effect that the operation wires can be connected more firmly.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view for explaining an embodiment of a connection structure of an operation wire for an in-vivo diagnostic device according to the present invention.

FIG. 2 is an overall perspective view showing a state where an operation wire is connected to a connection member.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a plan view showing a main body of the connecting member.

FIG. 6 is a sectional view taken along the line CC of FIG. 5;

FIG. 7 is a front view of a locking member.

FIG. 8 is a view taken in the direction of the arrow C ′ in FIG. 7;

FIG. 9 is a plan view of a fixing member.

FIG. 10 is a sectional view taken along line DD of FIG. 9;

FIG. 11 is an overall schematic view of an endoscope.

FIG. 12 is a schematic view showing the inside of a bending operation unit.

FIG. 13 is an exploded perspective view showing another embodiment of the present invention.

FIG. 14 is an overall perspective view showing a state where an operation wire is connected to a connection member.

FIG. 15 is a sectional view taken along line EE of FIG. 14;

16 is a sectional view taken along line FF of FIG.

FIG. 17 is an exploded perspective view showing another embodiment of the present invention.

FIG. 18 is an overall perspective view showing a state where an operation wire is connected to a connection member.

FIG. 19 is a sectional view taken along the line GG of FIG. 18;

20 is a sectional view taken along line HH of FIG.

FIG. 21 is an exploded perspective view showing another embodiment of the present invention.

FIG. 22 is an overall perspective view showing a state where an operation wire is connected to a connection member.

FIG. 23 is a sectional view taken along line II of FIG. 22;

FIG. 24 is an exploded perspective view showing another embodiment of the present invention.

FIG. 25 is an overall perspective view showing a state where an operation wire is connected to a connection member.

FIG. 26 is an exploded perspective view showing another embodiment of the present invention.

FIG. 27 is an overall perspective view showing a state where an operation wire is connected to a connection member.

FIG. 28 is a sectional view taken along the line JJ of FIG. 27;

[29] (a) is K ₁ -K ₁ cross-sectional view of FIG. 28, (b) is 2
8 is a sectional view taken along line K ₂ -K _2. FIG.

FIG. 30 is a schematic view showing the inside of a bending operation unit.

FIG. 31 is an exploded perspective view showing another embodiment of the present invention.

FIG. 32 is an overall perspective view showing a state where an operation wire is connected to a rack.

FIG. 33 is a sectional view taken along line LL of FIG. 32;

FIG. 34 is a sectional view taken along line MM of FIG. 33;

FIG. 35 is an exploded perspective view showing another embodiment of the present invention.

FIG. 36 is an overall perspective view showing a state where an operation wire is connected to a rack.

FIG. 37 is a sectional view taken along line NN in FIG. 36;

38 is a sectional view taken along the line OO of FIG. 37.

FIG. 39 is an exploded perspective view showing another embodiment of the present invention.

FIG. 40 is an overall perspective view showing a state where an operation wire is connected to a rack.

FIG. 41 is a sectional view taken along the line PP of FIG. 40;

FIG. 42 is a sectional view taken along line QQ of FIG. 41.

FIG. 43 is a schematic view showing the inside of a bending operation unit.

FIG. 44 is an exploded perspective view showing another embodiment of the present invention.

FIG. 45 is an overall perspective view showing a state where an operation wire is connected to a rack.

FIG. 46 is a sectional view taken along line RR of FIG. 45;

FIG. 47 is a sectional view taken along the line SS in FIG. 46;

FIG. 48 is an exploded perspective view showing another embodiment of the present invention.

FIG. 49 is an overall perspective view showing a state where an operation wire is connected to a rack.

50 is a sectional view taken along line TT in FIG. 49.

FIG. 51 is a U-U sectional view of FIG. 50;

FIG. 52 is an overall perspective view showing a state where an operation wire is connected to a pulley.

FIG. 53 is a sectional view taken along line VV of FIG. 52.

FIG. 54 is a sectional view taken along line WW of FIG. 53.

FIG. 55 is an overall perspective view showing a state where an operation wire is connected to a pulley.

FIG. 56 is a sectional view taken along line XX of FIG. 55;

FIG. 57 is a sectional view taken along line YY of FIG. 56.

FIG. 58 is an overall perspective view showing a connection structure of a conventional operation wire for a body cavity diagnostic device.

[Explanation of symbols]

Z: Endoscope (intra-cavity diagnostic device) 4: Bending part 20, 60, 90, 90 ', 90 ", 140 ... Body part (connected member) 190, 210, 240, 270, 300 ... Rack body (object) Connecting member) 370, 400 ... Pulley body (connected member) 30, 70, 100, 100 ', 100 ", 150, 2
20, 250, 280, 310, 410 ... locking members 24a, 24'a ... first through holes 24b, 24'b ... second through holes 24 ... through holes 26a, 26b ... first insertion holes 26 ' a, 26'b ... second insertion hole 26 ... insertion hole 21, 62, 92, 141, 211, 271, 301
... Lock holes 9, 9 '... Operation wires

Claims (2)

(57) [Claims] In a connection structure of an operation wire provided between a bending portion and a bending operation portion of a diagnostic device for a body cavity and a connected member to which the operation wire is connected, the connection member includes: One end is open on the outer surface, the other end is open toward the inside, the other end is open on the outer surface, the other end is open on the inner peripheral surface of the lock hole, and the operation wire is inserted inside. And a locking member for pressing and bending a portion of the operation wire exposed from the through hole into the locking hole is attached to the locking hole. Connection structure for operation wires. 2. The connecting structure for an operation wire for an in-vivo diagnostic device according to claim 1, wherein the connected member is opened at a position facing an opening of the through hole on an inner peripheral surface of the locking hole. A connection structure for an operation wire for an in-vivo diagnostic device, wherein an insertion hole through which the operation wire exposed from the through hole is inserted is formed inside.