JPH04352117A - Industrial endoscope device - Google Patents

Abstract

PURPOSE:To obtain an industrial endoscope device which prevents a rotary treatment part from falling by noticing securely a user of the loosening of the fixation of the rotary treatment member. CONSTITUTION:An axial positioning groove 52 is formed in the outer periphery of a tip hard part main body 24 and a set screw 53 is fitted rotatably onto the outer periphery of the tip hard part main body 24. A male screw part 55 is provided on the outer periphery of the front side of the set screw 53, and a holder 56 is fixed onto the tip hard part main body 24 by the male screw part 55. A grindstone fixation part 62 is provided on a top of a flexible shaft 13, a recessed part 63 which is rectangular when viewed from the front is formed at its tip side, and a rectangular piece 64 which is sectioned rectangularly and fitted in the recessed part 63 is fixed. The rectangular piece 64 and recessed part 63 are fitted with each other and the turning force of the flexible shaft 13 can be transmitted to a grindstone 12.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial endoscope apparatus, and more particularly to an industrial endoscope apparatus equipped with a rotating treatment member for grinding chipped parts such as turbine blades of jet engines.

0002

[Background Art] In recent years, in the industrial field, observation of the inside of boilers, turbines, engines, chemical plants, etc.
Industrial endoscopes that can perform inspections are widely used.

By the way, for example, when a chip occurs in a jet engine turbine blade, stress concentrates on that part, causing the turbine blade to crack and need to be replaced. For this reason, conventionally, when a chip in a turbine blade is discovered using an industrial endoscope, such as that disclosed in Japanese Utility Model Application Publication No. 63-76816, the jet engine has been disassembled and the chipped portion has been ground.

However, since this work is complicated, a rotating treatment member (grindstone) for grinding is provided at the distal end of the insertion section, similar to the medical endoscope shown in Japanese Patent Application Laid-Open No. 58-83949. Industrial endoscopes have also been used to grind chipped parts of jet engines without disassembling them.

When grinding the chipped portion, it is necessary to replace the grindstone to change the roughness of the grindstone. Therefore, in the conventional industrial endoscope as described above, a rotary treatment member is installed at the tip of the insertion section. The rotary treatment member is replaced by removing the fixing portion of the rotary treatment member that is fixed using a nut or the like at the attachment/detachment portion.

[0006]

[Problems to be Solved by the Invention] However, since the conventional fixing of the rotating treatment member is carried out with a nut or the like provided on the rotating shaft of the rotating treatment member, the fixing part itself also rotates, and the grinding It is also affected by vibrations generated in the rotating treatment member during work. Therefore, the fixing part easily loosens, and even if the fixing part loosens, there is no structure to notify the user.
If it continued to be used as it was, there was a risk that the rotating treatment member would fall off.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an industrial endoscope apparatus that can prevent the rotating treatment member from falling off.

[0008]

[Means for Solving the Problems] An industrial endoscope apparatus of the present invention includes a rotary treatment member that is detachably attached to the distal end of an insertion section of an endoscope, and a rotary treatment member that is inserted into the insertion section of the endoscope. a rotation transmission member that transmits rotational force to the rotation treatment member; a locking member that locks and connects the proximal end of the rotation treatment member and the distal end of the rotation transmission member; and a locking member that is detachably attached to the distal end of the insertion section. and a clamping notification member that is attached to the insertion portion, clamps the locking member to the distal end of the insertion portion, and notifies the attachment state of the locking member.

[0009]

[Function] The rotating treatment member is fixed by detachably attaching the clamping notification member to the distal end of the insertion portion, and the clamping notification member notifies the attached state of the clamping notification member.

0010

Embodiment FIGS. 1 to 6 relate to a first embodiment of the present invention, in which FIG. 1 is a sectional view showing the configuration of the endoscope tip, FIG. 2 is an assembled perspective view of the endoscope tip, and FIG. is a configuration diagram showing the configuration of the endoscope device, FIG. 4 is an explanatory diagram showing the state of the observation field when the holder is out of place, and FIG. 5 is an observation view when the holder of the first modification is out of place. FIG. 6 is an explanatory diagram showing the state of the field of view. FIG. 6 is an explanatory diagram showing the state of the observation field when the holder of the second modification is in a shifted state.

As shown in FIG. 3, the endoscope 2 constituting the endoscope apparatus 1 of this embodiment includes an elongated insertion section 3 and an operation section connected to the rear end of the insertion section 3. 4, and an eyepiece section 6 connected to the rear end of the operation section 4.

The insertion section 3 has a distal end section 7, a curved section 8, a rigid section 9, and a flexible section 11 connected in this order from the distal end side.
The operating section 4 is provided at the rear end of the flexible section 11 . A grindstone 12 is rotatably provided in front of the tip 7, for example, for cutting a defective part of a compressor blade 69 in a jet engine 68. The rigid portion 9 is held on the jet engine 68 by a holding device 67.

The endoscope 2 includes a flexible shaft 1 that is connected to the grindstone 12 and rotates the grindstone 12.
A channel 50, which will be described later, is provided for inserting various treatment instruments (not shown) in order to collect foreign matter that has fallen into the jet engine or the like endoscopically.

[0014] An insertion opening 14 through which the flexible shaft 13 and the treatment instrument are inserted, and a light guide cable 15 are provided on the side of the operating section 4. The light guide cable 15 is connected to a light source device 16, and the light source device 16 supplies illumination light. Also,
The base end of the flexible shaft 13 inserted into the insertion port 14 is connected to the rotational drive section 17.
The rotational force of a motor (not shown) provided therein is transmitted to the flexible shaft 13.

An external television camera 18 is detachably attached to the eyepiece section 6. This external television camera 18 is connected to a camera control unit 21 via a signal cable 19, and this camera control unit 21 transmits the endoscopic image obtained by the endoscope 2 to the external television camera 18. The image signal captured by the camera is processed by the image sensor. Further, the camera control unit 21 is connected to a monitor 23 via a signal cable 22, the video signal output from the camera control unit 21 is sent to the monitor 23, and an endoscope image is displayed on the screen of the monitor 23. It is now possible to do so.

As shown in FIGS. 1 and 2, the tip 7
includes a rigid tip body 24, and an objective lens system 26, a light distribution lens system 27, and an opening 29 of a channel 50 are provided at the tip of the rigid tip body 24. At the rear of the objective lens system 26, there is provided an incident end face of an image guide fiber 31 that transmits the image of the object to be inspected captured from the objective lens system 26. The image guide fiber 31 passes through the insertion section 3 and the operation section 4 described above, reaches the eyepiece section 6, and transmits an image of the object to be inspected to the external television camera 18. Further, an output end face of a light guide fiber 32 that transmits illumination is located behind the light distribution lens system 27, and is configured to irradiate the object to be inspected with illumination light. The light guide fiber 32 includes the insertion section 3, the operation section 4, and the light guide cable 1.
5 and reaches a light source device 16, and is supplied with illumination light generated by the light source device 16.

The opening 29 opens to the rear end surface of the rigid tip body 24, and the connecting tube 3 is connected to the rear end of the opening 29.
4 are connected. A distal end portion of a channel tube 36 is fitted onto the connecting tube 34 .

A groove 51 in the circumferential direction and a positioning groove 52 in the axial direction are provided on the outer periphery of the rigid tip main body 24. Further, a set screw 53 is rotatably fitted around the outer periphery of the rigid tip main body 24 . This top screw 53
A protruding portion 54 is provided on the inner diameter portion of the distal end side, and this protruding portion 54 is fixed so as not to move in the front-rear direction by engaging with the groove portion 51. A male threaded portion 55 is provided on the front outer periphery of the top screw 53,
The holder 56 is externally fitted and fixed to the rigid tip main body 24 by this male threaded portion 55 .

A hole 5 is formed in the tip surface of the holder 56 at a position corresponding to the object lens system 26 and the light distribution lens system 27.
7 and 58 are provided respectively, and a slot 59 is provided from the side surface of the holder 56 to a position corresponding to the opening 29.
is provided. In addition, the width of the slot 59 is the same as that of the grinding wheel 12.
The grinding wheel shaft 60 protruding rearwardly fits therein. Further, a positioning pin 61 is provided on the holder 56 so that these holes 57, 58 and the slot 59 can be automatically positioned when the holder 56 is attached to the rigid tip body 24. is engaged in the positioning groove 52.

A grindstone fixing portion 62 is provided at the tip of the flexible shaft 13, and a rectangular recess 63 when viewed from the front is formed at the tip. On the other hand, a square piece 64 having a square cross section that fits exactly into the recess 63 is fixed to the rear end of the grindstone shaft 60. Note that at least one side of the square piece 64 is wider than the cross-sectional diameter of the grindstone shaft 60 and the width of the slot 59. The square piece 64 and the recess 63 fit together so that the rotational force from the flexible shaft 13 can be transmitted to the grindstone 12.

As shown in FIG. 2, the industrial endoscope device 1 configured as described above is constructed by fitting the square piece 64 and the recess 63 with the grindstone shaft inserted into the slot 59. Thereafter, by fixing the holder 56 to the rigid tip main body 24 with the top screw 53, the grindstone is fixed to the tip of the endoscope.

The interior of the engine 68 is illuminated with illumination light emitted from the light distribution lens system 27 of the tip 7. Illumination light is supplied from the light source device 16 and passes through the light guide fiber 32.
The light is transmitted from the light distribution lens system 27 to the light distribution lens system 27.

The image of the object to be inspected illuminated with the illumination light is taken in from the objective lens system 26 and transferred to the image guide fiber 3.
1, the signal is transmitted to the external television camera 18 and imaged, signal processing is performed in the camera control unit 21, and the image of the object to be inspected is displayed on the screen of the monitor 23. The inspector examines the curved portion 8 while looking at the screen on the monitor 23.
compressor blades 6 in engine 68 by curving
Observe pattern 9. If there is a defect in the compressor blade 69, the rotary drive unit 17 is operated to remove the grinding wheel 12.
is rotated, and the grindstone 12 is applied to the defective part. The defective part is cut while looking at the screen of the monitor 23, and the treatment is completed.

According to the industrial endoscope device 1 of the first embodiment, the grindstone 12 is fixed by attaching the holder 56 to the tip of the endoscope insertion portion, so that the rotational force of the flexible shaft 13 and the Since vibrations generated in the grinding wheel 12 due to the grinding work are not directly applied to the holder 56 mounting portion, it is possible to securely fix the rotating treatment member. Furthermore, if the endoscope 1 is inserted into the engine 68 and the grinding operation is in progress, if the threading between the holder 56 and the top screw 53 becomes loose and there is a risk that the grindstone 12 will fall into the engine 68, the holder 56 There is a shadow 5 in the observation field as shown.
6a occurs, and the user can be reliably informed of the danger of the grindstone 12 falling off.

Note that the endoscope 2 of the first embodiment has an eyepiece section 6.
Although the configuration is such that an external television camera 18 is attached to the endoscope, the present invention is not limited to this, and an electronic endoscope may also be used, in which a solid-state image sensor is provided in the tip of the endoscope and the image signal of the observed image is obtained using the solid-state image sensor. .

Next, a first modification of the first embodiment will be explained.

FIG. 5 shows an image of the grindstone 12 when observed from the eyepiece 6 in the first modification. In the first modification, the eyepiece 6 or the objective lens system 26 has a structure such that, for example, a cross marked line 70 can be seen in the field of view when observed from the eyepiece 6, and a holder is also provided. When the grinding wheel 12 is securely fixed by 26, as shown in FIG.
As shown in (A), the marked line 70 is provided so that the point where the crosshairs of the marked line 70 intersect substantially coincides with the tip of the grindstone 12.

According to the first modification of the above configuration, when the holder 56 is loosened from the threaded connection with the top screw 53 and protrudes toward the tip side, and as a result, the grindstone 12 protrudes forward beyond the regular fixed portion, as shown in FIG. As shown in 5(B), the grindstone 12 is at the marked line 70.
Even if the whetstone 12 is slightly loosened, the user can be informed that the whetstone 12 is in danger of falling off.

Next, a second modification of the first embodiment will be explained using FIG. 6.

In the second modification, the grindstone shaft 6
Paint 71 is applied to 0. In a normal state where the grinding wheel 12 is securely fixed, the coating range of this coating 60 is as follows:
As shown in FIG. 6(A), the coating 71 does not appear in the observed image, and when the holder 56 loosens and the grindstone 12 protrudes forward, the coating 71 does not appear in the observed image, as shown in FIG. 6(B). It is about to appear.

According to the second modified example of the above-described configuration, as in the first modified example, even if the grindstone 12 is slightly loosened, the coating 71 remains as shown in FIG. 6(B). Since it appears in the observation image, it is possible to notify the user of the danger of the grindstone 12 falling off.

FIGS. 7 and 8 relate to the second embodiment, and FIG.
8 is a sectional view showing the configuration of the endoscope tip, and FIG. 8 is an assembled perspective view of the endoscope tip.

The second embodiment is almost the same as the first embodiment, so only the different parts will be explained, the same components will be given the same reference numerals, and the explanation will be omitted.

As shown in FIGS. 7 and 8, the top screw 72 in the second embodiment is provided with a first male threaded portion 73 and a second male threaded portion 74. As shown in FIGS. The positioning groove 75 is
A first groove 76 and a second groove 77 shown in FIG. 8 are provided in a key shape. The slit 79 provided on the holder 78 allows the positioning pin 61 of the holder 78 to sequentially engage the first groove 76 and the second groove 77 of the positioning groove 75 while the holder 206 has a hard tip. When the part body 80 is screwed and fixed, the grindstone shaft 6
The shape is such that 0 does not become an obstacle.

When screwing and fixing the holder 78 to the rigid tip body 80, first tighten the positioning pin 6 of the holder 78.
1 into the first groove part 76 of the positioning groove 75, the first male screw part 73 and the female screw part on the inner surface of the holder 78 are screwed together. When the top screw 72 is further turned and screwed into the holder 78, the positioning pin 61 is inserted in the middle of the first groove part 76, and the first male thread part 7
3 and the female threaded portion of the holder 78 are disengaged, and the female threaded portion of the holder 78 enters between the first male threaded portion 73 and the second male threaded portion 74. Here, the positioning pin 61 is moved along the positioning groove 75,
When the second groove portion 775 is engaged, the second male screw portion 74
The holder 78 can be screwed together with the holder 78, and the holder 78 can finally be fixed to the rigid tip main body 80. Further, the holes 57 and 58 provided in the holder 78 correspond to the objective lens system 26 and the light distribution lens system 27, respectively, with the female threaded part of the holder 78 screwed into the second male threaded part 74. It is located in a position where Other configurations and operations are the same as in the first embodiment.

According to the second embodiment, the grindstone 12 does not fall off from the endoscope simply by disengaging the female threaded portion of the holder 78 and the second male threaded portion 74 of the top screw 72; In order for the holder 78 to be screwed into the first male threaded portion 73, the positioning pin 61 of the holder 78 must be inserted into the positioning groove 7.
5 and enter the first groove 76, the grindstone 12 is more difficult to fall off than in the first embodiment. Also, when the positioning pin 61 enters the first groove 76, the hole 57
, 58 are deviated from the positions corresponding to the objective lens system 26 and the light distribution lens system 27, a visual field abnormality that is more obvious than, for example, the visual field abnormality shown in the first embodiment always occurs within the observation visual field. Therefore, it is possible to reliably notify the user of the danger of the grindstone 12 falling off.

Other effects are the same as in the first embodiment.

By the way, various treatment tools are inserted through the channel 50 of this embodiment, and the treatment tools will be explained.

FIG. 9 is a sectional view showing a first application example of a treatment instrument inserted into a channel.

As shown in FIG. 9, a pipe-shaped member 82 is fixed to the tip of the coil pipe 81 by brazing or the like. A coil pipe 83 having a smaller diameter is inserted inside the coil pipe 81. A claw 84 is fixed to the tip of the coil pipe 83 via a pipe-like member 85 by brazing or the like. A wire 86 is inserted through the inside of the small diameter coil pipe 83. A magnetic body 87 is fixed to the tip of the wire 86. An operation section (not shown) for pushing and pulling the small diameter coil pipe 83 and wire 86 is provided at the rear end of the coil pipe 81.

In the treatment instrument of the first application example constructed as described above, the magnetic body 87 is magnetically attached to a magnetic foreign substance (not shown), and the wire 86 is retracted to draw this magnetic foreign substance inside the claw 84 . Next, the small diameter coil pipe 83 and the wire 8
6 together into the coil pipe 81, hook the claw 84 on the magnetic foreign object, and pull out the endoscope together with the endoscope from inside the engine.

[0042] Therefore, by inserting the treatment tool having the above structure into the engine or the like through the channel 50, magnetic foreign objects such as screws that have been dropped into the engine can be reliably recovered.

FIG. 10 is a sectional view showing a second application example of a treatment instrument inserted into a channel. As shown in FIG. 10, similarly to the first application example, a pipe-shaped member 82 is fixed to the tip side of the coil pipe 81. coil pipe 81
A wire 86 is passed through the inside of the holder. A claw 88 is fixed to the tip of the wire 86 via a pipe-like member 85 by brazing or the like. Note that the tip of the claw 88 is made of a magnetic material.

According to the above structure, the claws 88 can narrow down and grasp foreign objects inside the engine by drawing the wire 86 into the inside of the coil pipe 81. At that time, if the foreign objects are magnetic, the claws can grasp them. The gripping force of the foreign object 88 on the foreign object becomes stronger, and the transendoscopic recovery of the foreign object from inside the engine is ensured.

FIG. 11 is a sectional view showing a third application example of a treatment instrument inserted into a channel. As shown in FIG. 11, instead of providing a magnetic material at the tip of the claw 88 in the second application example, a pipe-like member 89 or a pipe-like member 90 is made of a magnetic material. Other configurations and effects are in the second section.
This is the same as the application example.

12 and 13 relate to a fourth application example of a treatment instrument inserted into a channel, FIG. 12 is a perspective view showing the tip of a conventional treatment instrument, and FIG. 13 is a treatment example of the fourth application example. It is an explanatory view explaining a tool.

For example, in a conventional treatment instrument 100 having a distal end shape as shown in FIG. 12, the distal end portion is thick, making it difficult to collect foreign matter inside the subject.

Therefore, as shown in FIG. 13(A), the treatment tool 101 of the fourth application example for easily recovering the foreign object 109 inside the subject 103 is of the single-opening forceps type, and the treatment tool 101 is of the single-open forceps type. The tip of the tool 101 is connected to the fixed part 102 and the movable part 1.
05. The distal end portion 108 of the fixed portion 102 is formed thin, and the distal end of the movable portion 105 is provided with a hook-shaped portion 106. Furthermore, a protrusion 104 is provided at the rear of the tip 108 for convenient collection of a cylindrical foreign object 107 as shown in FIG. 13(B).

As shown in FIG. 13(A), the treatment instrument 101 configured in this manner has a fixed portion 102 of the treatment instrument 101.
The tip 108 of the foreign object 10 inside the subject 103
Get under 9 and scoop up foreign matter. Next, the movable part 10
The key-shaped tip 106 of No. 5 presses down the foreign object 109 from above and prevents the foreign object from falling off from the treatment instrument 101 during collection.

As shown in FIGS. 13(B) and 13(C), when collecting the cylindrical foreign object 107, the foreign object 107
is scooped up by the distal end 108 of the fixed part 102 of the treatment instrument 101, and then scooped up by the protrusion 104 of the fixed part 102 and the movable part 10.
6 to collect the cylindrical foreign object 107.

Therefore, the treatment tool of the fourth application example configured as described above can easily recover small foreign objects such as bolts and washers dropped inside the subject.

[0052]

As explained above, according to the present invention, in the industrial endoscope apparatus of the present invention, the rotating treatment member is fixed by detachably attaching the clamping notification member to the distal end of the insertion section. , the clamping notification member notifies the attachment state of the clamping notification member, so if the fixation of the clamping notification member loosens due to the influence of vibrations generated in the rotating treatment member due to grinding work, etc., the user should On the other hand, by reliably notifying that the clamping notification member is loosened, it is possible to prevent the rotating treatment member from falling off.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the configuration of a distal end portion of an endoscope according to a first embodiment.

FIG. 2 is an assembled perspective view of the distal end portion of the endoscope according to the first embodiment.

FIG. 3 is a configuration diagram showing the configuration of an endoscope apparatus according to the first embodiment.

FIG. 4 is an explanatory diagram showing the state of the observation field when the holder according to the first embodiment is in a shifted state.

FIG. 5 is an explanatory diagram showing the state of the observation field when the holder of the first modified example of the first embodiment is in a shifted state.

FIG. 6 is an explanatory diagram showing the state of the observation field when the holder of the second modified example of the first embodiment is in a shifted state.

FIG. 7 is a cross-sectional view showing the configuration of a distal end portion of an endoscope according to a second embodiment.

FIG. 8 is an assembled perspective view of a distal end portion of an endoscope according to a second embodiment.

FIG. 9 is a sectional view showing a first application example of a treatment instrument inserted into a channel.

FIG. 10 is a sectional view showing a second application example of a treatment instrument inserted into a channel.

FIG. 11 is a sectional view showing a third application example of a treatment instrument inserted into a channel.

FIG. 12 is a perspective view showing the distal end of a conventional treatment instrument according to a fourth application example of a treatment instrument inserted into a channel.

FIG. 13 is an explanatory diagram illustrating a treatment instrument according to a fourth application example of a treatment instrument inserted into a channel.

[Explanation of symbols]

7...Tip 12...Whetstone 13...Flexible shaft 50...channel 52...Positioning groove 53...Tome screw 56...Holder 59...slip splitting 60...Whetstone shaft 61...Positioning pin 63...Concavity 64...square piece

Claims (1)

[Claims] 1. A rotational treatment member that is detachably attached to a distal end of an insertion portion of an endoscope; a rotation transmission member that is inserted through the insertion portion of the endoscope and transmits rotational force to the rotational treatment member; a locking member that locks and connects the proximal end of the rotational treatment member and the distal end of the rotation transmission member; and a locking member that is detachably attached to the distal end of the insertion section, and the locking member is attached to the distal end of the insertion section. An industrial endoscope device comprising a clamping notification member that clamps the device and notifies the user of its attached state.