JP2013128710A - Component fixing structure of endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component fixing structure of an endoscope, capable of suppressing useless replacement of a member to be fixed and reducing costs of repair and maintenance or the like by the configuration of preventing the member to be fixed from being damaged by attachment and detachment of a fixing member.SOLUTION: The fixing structure of an endoscope includes: a first member 21 to be fixed, where a hole part 23 is formed; a second member to be fixed, which is inserted and fitted to the first member 21 to be fixed and has a recessed part 33b formed at a position to be superimposed facing the hole part 23; and a fixing member 50 which has a projection part to be inserted to the hole part 23 and engaged with the recessed part 33b. The fixing member 50 is rotated at a prescribed angle and the projection part is scraped or deformed by a wall surface forming the recessed part 33b, made into a plane and brought into surface contact, and thus the first member 21 to be fixed and the second member to be fixed are fixed.

Description

  The present invention relates to an endoscope component fixing structure in which various units are fixed to a distal end portion of an insertion portion.

  As is well known, endoscopes are widely used for observation and treatment of living bodies (inside body cavities), inspections and repairs in industrial plant facilities, and the like. Such an endoscope has an imaging unit provided with an objective optical system, an illumination unit provided with an illumination optical system, a channel unit for a treatment instrument channel, a nozzle unit for air supply / water supply, etc. at the tip. It is fixed to the part by a screw member. For example, as disclosed in Patent Document 1, such various units are fixed by contacting a screw member screwed into a screw hole of a distal end hard portion provided at the distal end portion.

JP 2006-130002 A

  However, the conventional endoscope has a resin-made tip cover or metal of the fixed member by screwing the screw member of the fixing member that fixes the various units as the fixed member at the time of repair or maintenance of the various units. There is a case where the screw hole of the hard end portion made of metal is cut and damaged. In particular, the screw tip hole of the resin tip cover is significantly damaged. If the screw hole of the member to be fixed is damaged in this way, it is necessary to replace the tip cover or the tip hard portion. As a result, the conventional endoscope has a problem that costs for repair and maintenance increase.

  Therefore, the present invention has been made in view of the above circumstances, and as a configuration for preventing the member to be fixed from being damaged by the attachment and detachment of the fixing member, useless replacement of the member to be fixed is suppressed, repair, maintenance, etc. An object of the present invention is to provide an endoscope component fixing structure that reduces the cost of the endoscope.

  An endoscope component fixing structure according to an aspect of the present invention includes a first fixed member having a hole portion, and the first fixed member, which is inserted into the first fixed member, and overlaps with the hole portion. And a fixing member having a convex portion inserted into the hole and engaged with the concave portion, the fixing member having a predetermined angle. The first fixed member and the second fixed member are fixed by rotating and rotating, and the convex portion being cut or deformed on the wall surface forming the concave portion to be planarized and brought into surface contact.

  According to the present invention, as a configuration for preventing the member to be fixed from being damaged due to the attachment and detachment of the fixing member, useless replacement of the member to be fixed is suppressed, and the parts fixing of the endoscope that reduces the cost of repair, maintenance, etc. Can provide structure.

The perspective view which concerns on the 1st Embodiment of this invention and shows the whole structure of an endoscope apparatus. Side view of the imaging unit FIG. 2 is a front view of the image pickup unit of FIG. The IV-IV line sectional view of the imaging unit of FIG. The perspective view which shows the front-end | tip part of an imaging unit similarly The exploded perspective view which shows the state which mounts an imaging unit in a front-end | tip hard part similarly Same direction perspective view showing the structure of the rivet Same perspective view showing the structure of the rivet The figure which shows the state in which the rivet was inserted in the recessed part similarly Sectional drawing which shows the state by which the rivet was inserted in the recessed part similarly The figure which shows the state by which the rivet was rotated and fixed to the recessed part similarly Sectional drawing which shows the state by which the rivet was rotated and fixed to the recessed part similarly Sectional drawing which shows the state by which the imaging unit was fixed to the front-end | tip hard part similarly The side view which shows the state by which the imaging unit was fixed to the front-end | tip hard part similarly The perspective view which shows the state by which the imaging unit was fixed to the front-end | tip hard part similarly The perspective view of one direction which shows the structure of a rivet concerning the 2nd Embodiment of this invention. Same perspective view showing the structure of the rivet The schematic diagram which shows the state by which the rivet was inserted in the recessed part similarly The schematic diagram which shows the state by which the rivet was rotated and fixed to the recessed part similarly Sectional drawing which shows the state by which the imaging unit was fixed to the front-end | tip hard part similarly Schematic showing a state in which another form of rivet is inserted into the recess The schematic diagram which shows the state by which the rivet of another form was rotated and fixed to the recessed part similarly

  Hereinafter, an endoscope apparatus according to the present invention will be described. In the following description, the drawings based on each embodiment are schematic, and the relationship between the thickness and width of each part, the thickness ratio of each part, and the like are different from the actual ones. It should be noted that the drawings may include portions having different dimensional relationships and ratios between the drawings.

  Note that the endoscope in the following description of the configuration will be described by taking a so-called flexible endoscope having an insertion portion flexible for insertion into the digestive organs of the upper or lower part of the living body, but is not limited thereto. In addition, the technique can be applied to a so-called rigid endoscope having a hard insertion portion used for surgery.

(First embodiment)
First, a first embodiment of the present invention will be described with reference to the drawings. 1 to 15 relate to a first embodiment of the present invention, FIG. 1 is an overall configuration diagram of an endoscope, FIG. 2 is a side view of an imaging unit, and FIG. 3 is an arrow view III of the imaging unit in FIG. 4 is a cross-sectional view taken along the line IV-IV of the imaging unit in FIG. 2, FIG. 5 is a perspective view showing a tip portion of the imaging unit, and FIG. 6 is an exploded perspective view showing a state in which the imaging unit is attached to the hard tip portion. 7 is a perspective view in one direction showing the structure of the rivet, FIG. 8 is a perspective view in another direction showing the structure of the rivet, FIG. 9 is a view showing a state where the rivet is inserted into the recess, and FIG. FIG. 11 is a diagram showing a state in which the rivet is rotated and fixed in the recess, FIG. 12 is a cross-sectional view showing a state in which the rivet is rotated and fixed in the recess. 13 is a cross-sectional view showing a state in which the imaging unit is fixed to the hard tip portion, and FIG. FIG. 15 is a perspective view illustrating a state in which the imaging unit is fixed to the distal end hard portion. FIG. 15 is a perspective view illustrating a state in which the imaging unit is fixed to the distal end hard portion.

  As shown in FIG. 1, the electronic endoscope system 1 according to the present embodiment mainly includes an endoscope 2, a light source device 3, a video processor 4, and a monitor 5.

  The endoscope 2 has a long and narrow insertion portion 9, an operation portion 10, and a universal cable 19 that is an electric cable. The insertion portion 9 of the endoscope 2 includes a distal end portion 6, a bending portion 7, and a flexible tube portion 8 in order from the distal end.

  The operation section 10 is provided with a bending operation knob 14 for bending the bending section 7 of the insertion section 9 and is provided with switches for various endoscope functions. In the bending operation knob 14, a UD bending operation knob 12 for bending the bending portion 7 in the vertical direction and an RL bending operation knob 13 for bending the bending portion 7 in the left-right direction are superimposed. It is arranged.

  The connecting portion between the insertion portion 9 and the operation portion 10 includes a gripping portion 11 that also serves as a gripping portion by the user, and a bend preventing portion provided between the gripping portion 11 and one end of the flexible tube portion 8 of the insertion portion 9. And a treatment instrument channel insertion portion 18 serving as an opening of a treatment instrument channel through which various treatment instruments arranged in the insertion portion 9 are inserted.

  The universal cable 19 extending from the operation unit 10 has an endoscope connector 19a that is detachable from the light source device 3 at the extended end. The endoscope 2 according to the present embodiment illuminates from the light source device 3 to the distal end portion 6 by a light guide bundle (not shown) of illumination means disposed in the universal cable 19, the operation unit 10, and the insertion unit 9. It transmits light. Further, the endoscope connector 19a is provided with a coiled coil cable 20 extending, and an electric connector detachably attached to the video processor 4 is provided at an extended end of the coil cable 20.

  The video processor 4 is electrically connected to a monitor 5 that displays an endoscopic image, and receives an imaging signal photoelectrically converted by an endoscope imaging unit 30 described later, which is an imaging unit described later of the endoscope 2. The signal is processed and output to the monitor 5 as an image signal. In the electronic endoscope system 1, although not shown, the light source device 3 is provided with an air / water supply function for ejecting air and water from the distal end portion 6 of the insertion portion 9 of the endoscope 2.

An endoscope imaging unit (hereinafter simply referred to as an imaging unit) 30 shown in FIGS. 2 to 5 is built in the distal end portion 6.
As shown in FIGS. 2 and 3, the imaging unit 30 includes a metal-made substantially tubular lens frame 31, a unit holding frame 35 that is externally fitted to the rear of the lens frame 31, and the unit holding frame 35. And a reinforcing frame 36 that is externally fitted rearward.

  Here, the lens frame 31 is made of stainless steel metal, and as shown in FIG. 4, is a lens fixing frame that holds an objective lens group 41 that is an objective optical system. And an outward flange-shaped body portion 33 whose outer peripheral portion is larger in diameter than the observation window holding portion 32, and a fitting portion that is connected to the body portion 33 and is inserted into the distal end portion of the unit holding frame 35. And a joint portion 34.

  The observation window holding unit 32 of the lens frame 31 holds an objective lens 41a that is disposed at the forefront of the objective lens group 41 and serves as an observation window (see FIGS. 3 and 4). As shown in FIGS. 2 to 5, the barrel portion 33 of the lens frame 31 is formed with a flat portion 33 a on a part of the outer periphery, and a rectangular concave portion 33 b having a substantially square cross section is formed from this plane in the inner diameter direction. Is formed.

  The unit holding frame 35 of the lens frame 31 holds the optical member 42 at the rear (see FIG. 4). The front surface of the cover glass 43 is fixed to the rear surface of the optical member 42 with an optical adhesive. On the rear surface of the cover glass, a solid-state imaging device 44 which is an imaging means such as a CCD or CMOS is fixed by an optical adhesive.

  The solid-state imaging device 44 is electrically connected to the imaging substrate 45. The optical member 42, the solid-state imaging device 44, and the imaging substrate 45 that are held by the unit holding frame 35 are covered with the reinforcing frame 36. The periphery of the solid-state imaging device 44 and the imaging substrate 45 is covered with a filler (not shown) such as an adhesive in the reinforcing frame 36 for moisture prevention, insulation and the like.

  The imaging unit 30 configured as described above is configured such that the imaging light (subject image) of the optical axis O that enters the objective lens group 41 is imaged by the light receiving unit of the solid-state imaging device 44. The solid-state image sensor 44 photoelectrically converts photographic light and outputs image data of the subject to the imaging substrate 45. And the imaging board | substrate 45 processes an imaging data appropriately electrically, and outputs it to the electrically connected communication cable (not shown). This communication cable is inserted and arranged in the endoscope 2 and is electrically connected to the video processor 4 as an external device via an electrical connector provided on the coil cable 20 extending from the endoscope connector 19a. .

  By the way, the distal end portion 6 of the insertion portion 9 is provided with a distal end hard portion 21 shown in FIG. 6, which is a hard, substantially cylindrical metal block such as stainless steel here. An observation window holding portion 32 of the imaging unit 30 is inserted into the distal end hard portion 21 in the observation hole portion 22, and a barrel is formed on the rear end surface of the distal end hard portion 21 formed around the observation hole portion 22. It is inserted and fixed so that the front surface of the portion 33 is brought into contact with it.

Here, an endoscope component fixing structure for fixing the imaging unit 30 in the present embodiment to the distal end rigid portion 21 provided in the distal end portion 6 will be described in detail below.
When the imaging unit 30 serving as the second member to be fixed here is attached to the one side peripheral portion on the front side of the distal end hard portion 21 serving as the first member to be fixed here, A hole portion 23 is formed by drilling toward the inner diameter direction of the distal end hard portion 21 at a position overlapping the concave portion 33b of the flat surface portion 33a. A rivet 50 made of a softer (lower hardness) metal than a hard metal such as a resin such as resin or aluminum such as aluminum is inserted into the hole. That is, the imaging unit 30 and the hard tip 21 constitute a fixed member that is fixed to each other by the rivet 50 of the fixing member.

  The distal end hard portion 21 is formed with two groove portions 24 having a predetermined depth in the inner diameter direction in communication with the hole portion 23 at a point-symmetric position in the center of the hole portion 23. These two groove portions 24 have a predetermined angle with respect to the longitudinal axis of the distal end hard portion 21, here, an angle of 45 degrees, and are formed in a straight line through the hole portion 23.

  As shown in FIGS. 7 and 8, the rivet 50 has a substantially columnar head 51 and a rectangular block shape protruding from one surface of the head 51, here, a convex portion 53 having a substantially square cross section. doing. Here, the rivet 50 is an exchange member (disposable) each time it is used.

  The cross-sectional shape of the convex portion 53 (the cross-sectional outer shape orthogonal to the central axis of the rivet 50 along the mounting direction to the hard tip portion 21) is the cross-sectional shape of the concave portion 33b formed in the imaging unit 30 (the hard tip portion 21). The shape is slightly smaller than the cross-sectional outline perpendicular to the central axis. A slot 52 is formed on the surface of the head 51. The slot 52 has a groove width equivalent to the two groove portions 24 of the distal end hard portion 21 described above.

  When the imaging unit 30 is assembled and fixed to the distal end hard portion 21, first, in the imaging unit 30, the observation window holding portion 32 side of the lens frame 31 serving as the distal end side extends from the rear side of the distal end hard portion 21 to the observation hole 22. Inserted (see FIG. 6). Then, the imaging unit 30 is rotationally adjusted to a position where the concave portion 33 b formed in the flat surface portion 33 a of the body portion 33 of the lens frame 31 and the hole portion 23 of the distal end hard portion 21 are opposed to each other.

  From this state, the rivet 50 is inserted into the hole 23 of the distal end hard portion 21 from the convex portion 53 side as shown in FIG. At this time, the convex portion 53 of the rivet 50 is engaged with the concave portion 33b of the lens frame 31, as shown in FIG. In addition, since the convex part 53 has a slightly smaller outer shape than the concave part 33b, it is easily fitted into the concave part 33b.

  Next, in the rivet 50, a slotted screwdriver or the like is used from the state shown in FIGS. 9 and 10, and as shown in FIGS. 11 and 12, the slot 52 and the two groove portions 24 of the distal end hard portion 21 are linear. Is rotated around the central axis by a predetermined angle θ, here 45 °. That is, the two groove portions 24 serve as index portions indicating the rotation amount of the rivet 50, here, 45 ° rotation. An indicator portion such as a mark that defines the amount of rotation of the rivet 50 may be provided on the outer peripheral portion of the distal end hard portion 21 in the vicinity of the hole portion 23.

  As shown in FIG. 12, the rotated rivet 50 is scraped by the four corners formed in the outward direction of the convex portion 53 abutting against the four wall surfaces of the hard tip portion 21 forming the concave portion 33b. Or deform. That is, since the rivet 50 is formed of a metal having a lower hardness than a hard metal such as resin or stainless steel, the four corners of the convex portion 53 are concave portions of the body portion 33 in the lens frame 31 made of hard metal. The four wall surfaces forming 33b can be easily cut or deformed and flattened without damaging. Note that the corners of the rivet 50 may be formed into a curved surface instead of being pointed to facilitate rotation.

  And the metal plate 54 used as the rotation prevention member of the rivet 50 is engage | inserted by the linear groove | channel formed of the slot 52 and the two groove parts 24 (refer FIG. 6). Thus, the imaging unit 30 is assembled and fixed to the distal end hard portion 21 as shown in FIGS. If the rivet 50 is formed of resin, the tip portion 6 can be reduced in weight as compared with metal.

  Various units are fixed to the distal end hard portion 21, and a front end portion 55 shown in FIG. 14 and FIG. 15 is fixed to the front portion so as to cover the rivet 50. . Furthermore, the distal end hard portion 21 has the distal end portion of the outer skin 56 fixed to the rear side by thread winding bonding or the like.

  In the above description, the fixing structure for fixing the imaging unit 30 to the distal end hard portion 21 has been described. However, the present invention is not limited thereto, and the illumination unit in which the illumination optical system is disposed, the channel unit for the treatment instrument channel, A similar component fixing structure can also be applied when fixing a nozzle unit for air / water supply to the distal end hard portion 21.

  As described above, in the component fixing structure of the imaging unit 30 and the distal end hard portion 21 in the endoscope 2 of the present embodiment, the rivet 50 is rotated 45 degrees around the central axis here, A flat surface that comes into surface contact with the inner wall is formed by scraping or deforming the four inner walls that form the concave portion 33b, and a frictional force is generated in contact with the state in which each of the flat surfaces comes into contact with the inner wall, The imaging unit 30 is fixed so as not to come off from the distal end hard portion 21. Thereby, the imaging unit 30 and the distal end hard portion 21 are firmly fixed to each other without any backlash. Since the convex portion 53 of the rivet 50 is engaged with the concave portion 33b from a direction orthogonal to the insertion direction (mounting direction) of the imaging unit 30 to the distal end hard portion 21, the concave portion 33b is caught by the convex portion 53. Further, the imaging unit 30 and the distal end hard portion 21 are firmly fixed in the mounting direction.

  Note that the convex portion 53 of the rivet 50 is configured such that at least two corner portions are cut or deformed and flattened portions come into contact with different wall surfaces forming the concave portion 33b and are held by frictional force, so that the imaging unit 30 And the rigid tip 21 can be fixed, it is not limited to a rectangular block shape having four corners. Further, the convex portion 53 of the rivet 50 only needs to have a shape that can be held in contact with a wall surface that forms a concave portion 33b by cutting or deforming a plurality of corners, and therefore matches the shape of the concave portion 33b. There is no need, and by making the shape smaller than the concave portion 33b, the insertion into the concave portion 33b is facilitated.

  From the above, the endoscope 2 according to the present embodiment is a metal of a fixed member by attaching / detaching a rivet 50 of a fixing member for fixing the imaging unit 30 when repairing or maintaining various units, here, the imaging unit 30. It is possible to prevent the imaging unit 30 including the frame and the distal end hard portion 21 from being cut and damaged. In particular, the resin tip cover 55 attached to the tip hard portion 21 is not formed with a screw hole to which the fixing member is screwed, and is fixed to the tip hard portion 21 so as to cover the rivet 50. It is not damaged by the fixing member. Therefore, the endoscope 2 can be configured such that it is not necessary to replace the distal end cover 55 or the distal end rigid portion 21 unnecessarily when repairing or maintaining various units.

  As described above, the endoscope 2 is configured to prevent the member to be fixed from being damaged due to the attachment and detachment of the fixing member, so that unnecessary replacement of the member to be fixed can be suppressed, and costs for repair and maintenance can be reduced. .

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. This embodiment is a modification of the first embodiment, and the same members are denoted by the same reference numerals and detailed description thereof is omitted. 16 to 20 relate to a second embodiment of the present invention, FIG. 16 is a perspective view in one direction showing the structure of the rivet, FIG. 17 is a perspective view in another direction showing the structure of the rivet, and FIG. FIG. 19 is a schematic view showing a state in which the rivet is inserted into the recess, FIG. 19 is a schematic view showing a state in which the rivet is rotated and fixed in the recess, and FIG. 20 is a cross-sectional view showing a state in which the imaging unit is fixed to the hard tip FIG. 21 is a schematic view showing a state in which another form of rivet is inserted into the recess, and FIG. 22 is a schematic view showing a state in which another form of rivet is rotated and fixed in the recess.

  As shown in FIGS. 16 to 19, the rivet 50 here has a convex portion 53 having a substantially rectangular cross section in a direction orthogonal to the central axis. As shown in FIG. 18, the convex portion 53 is eccentric so that the central axis O2 is disposed at a position separated from the central axis O1 of the head 51, that is, the rotational axis of the rivet 50 by a predetermined distance. It is formed to do.

  The rivet 50 is inserted into the hole 23 of the distal end hard portion 21 at an offset position where the convex portion 53 is closer to the front in the recess 33 b of the imaging unit 30 when the imaging unit 30 and the distal end hard portion 21 are fixed. Is done. When the rivet 50 is rotated at a predetermined angle θ, which is 45 ° here, in particular, the corner that presses the wall on the front side forming the concave portion 33b is greatly shaved or deformed to cause contact pressure. Is increasing. In other words, the convex portion 53 comes into contact with the corner portion that contacts the wall surface forming the concave portion 33b on the front side by applying a large pressing force toward the front side. Therefore, the imaging unit 30 is pushed and abutted toward the front of the distal end hard portion 21 (the direction indicated by the arrow F in FIG. 20). In this way, the imaging unit 30 can be pushed forward with the rotation of the rivet 50 and can be reliably abutted against and fixed to the distal end hard portion 21.

  In the state where the imaging unit 30 is inserted into the distal end hard portion 21, as shown in FIGS. 21 and 22, the shape of the convex portion 53 of the rivet 50 is not changed, and the center (central axis) O1 of the rivet 50 is maintained. On the other hand, the center (center axis) O2 of the recess 33b of the imaging unit 30 may be set to be offset toward the rear by a predetermined distance d1. Thereby, the center (center axis) O2 of the recess 33b is directed toward the center (center axis) O1 of the rivet 50, and the predetermined distance d1 between the centers O1 and O2 is a predetermined distance shorter than the predetermined distance d1. As the rivet 50 is rotated, the imaging unit 30 is pressed forward, moved forward, and reliably abutted against the distal end hard portion 21 and fixed.

  Even in such a configuration, as shown in FIG. 20, when the convex portion 53 rotates, one corner portion of the convex portion 53 comes into contact with the wall surface forming the concave portion 33 b on the front side, and the imaging unit 30 is moved forward. Press toward the side. For this reason, the imaging unit 30 is also pushed and abutted toward the front of the distal end hard portion 21 here. With such a configuration, in addition to the effects of the first embodiment, the imaging unit 30 improves the assembly accuracy of the position in the front-rear direction to the distal end hard portion 21 and is influenced by other components. It can be installed in a setting position that will not be received. Here, since it is the imaging unit 30, for example, a set angle of view can be obtained with certainty. In addition, also when fixing various units to the front-end | tip hard part 21, for example, in an illumination unit, the vignetting of illumination light by another component can be prevented, and the flow rate and direction in which air supply / water supply was set in the nozzle unit Can be fixed at the position.

  In the above description, the lens frame 31 and the distal end hard portion 21 of the imaging unit 30 are not limited to being formed of metal, here, stainless steel, but are formed of a hard resin such as a silicone range, and the rivet 50. If the material is softer than that, the configuration of the present application can be achieved.

  The invention described in the above-described embodiment is not limited to the embodiment and modifications, and various modifications can be made without departing from the scope of the invention in the implementation stage. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements.

  For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the described requirements can be deleted if the stated problem can be solved and the stated effect can be obtained. The configuration can be extracted as an invention.

2 ... Endoscope 6 ... Tip portion 7 ... Curved portion 8 ... Flexible tube portion 9 ... Insertion portion 21 ... Hard tip portion 22 ... Observation hole portion 23 ... Hole portion 24 ... Groove portion 30 ... Endoscope imaging unit 31 ... lens frame 32 ... observation window holding part 33 ... body part 33a ... flat part 33b ... concave part 34 ... fitting part 35 ... unit holding frame 36 ... reinforcing frame 41 ... objective lens group 41a ... objective lens 42 ... optical member 43 ... cover Glass 44 ... Solid-state image sensor 45 ... Imaging substrate 50 ... Rivet 51 ... Head 52 ... Slot 53 ... Projection 54 ... Metal plate O ... Optical axis θ ... Angle

Claims (10)

A first fixed member having a hole formed therein;
A second fixed member that is inserted into the first fixed member and has a recess formed at a position that overlaps the hole portion;
A fixing member having a convex portion inserted into the concave portion and inserted into the concave portion;
Comprising
The fixing member is rotated at a predetermined angle, and the convex portion is scraped or deformed on the wall surface forming the concave portion to be planarized and brought into surface contact with the first fixed member and the second fixed member. An endoscope component fixing structure characterized by fixing a member. The convex part has at least two corners,
2. The component fixing structure for an endoscope according to claim 1, wherein the two corners are scraped or deformed into the surface of the wall having different recesses.   3. The endoscope component fixing according to claim 1, wherein a material forming the fixing member has a hardness lower than a hardness of a material of the second fixed member. Construction.   The endoscope component fixing structure according to any one of claims 1 to 3, wherein the fixing member has an outer shape smaller than the concave portion.   The said 1st to-be-fixed member is provided with the parameter | index part which prescribes | regulates the said predetermined angle of the said fixing member in the vicinity of the said hole part, The any one of Claims 1-4 characterized by the above-mentioned. The endoscope part fixing structure described in 1.   The part fixing structure for an endoscope according to any one of claims 1 to 5, wherein a slit is formed on a side opposite to the convex portion of the fixing member.   The indicator portion is two groove portions formed in a straight line through the hole portion, and the position where the slit and the two groove portions are in a straight line indicates the predetermined angle. The endoscope part fixing structure according to claim 6.   In the state where the first fixed member and the second fixed member are fixed, the slot and the two groove portions are arranged in a groove formed in a straight line having the same width, 8. The endoscope component fixing structure according to claim 7, further comprising a plate member that prevents rotation of the fixing member.   The convex portion is provided at a position where a central axis is decentered from the rotation axis of the fixing member, applies a pressing force to a front wall surface forming the concave portion, and causes the second fixed member to move to the first fixing member. The endoscope component fixing structure according to any one of claims 1 to 8, wherein the component fixing structure is fixed so as to abut on a front side of the fixed member. The hole is formed in a direction perpendicular to the insertion direction of the second fixed member of the first fixed member,
The endoscope component fixing structure according to any one of claims 1 to 9, wherein the fixing member is engaged with the hole from the orthogonal direction.

Images