JP3368649B2 - Endoscope bending operation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved portion of an endoscope insertion portion.
Endoscope bending operation device for bending operation of the
I do. [0002] 2. Description of the Related Art Conventionally, as a bending operation device for an endoscope,
As shown in Japanese Utility Model Publication No. 63-9282, a fixed shaft
A cylindrical bending operation member is inserted into the
By rotating the operation knob attached to the material, the endoscope
It is known that the bending section provided in the insertion section bends.
Have been. [0003] Such a bending operation device is operated by an endoscope.
Fixed shaft protruding from the part to the outside, and rotatable on this fixed shaft
And a rotary cylinder fitted to the
An operation knob for rotating the rotary cylinder,
The operation knob is connected to the rotary cylinder to rotate the operation knob.
A rotational force transmitting mechanism for transmitting a force to the rotary cylinder;
And a brake mechanism that controls the rotation of the
You. [0004] The operating knob, brake mechanism, and rotary cylinder
IsRespectivelyConnected by the connecting members
Are connected to the top and side of the operation knob that actually performs the operation.
It was exposed on the surface. Further, the connection member is also used for other parts.
Was fitted in the recess. [0005] Therefore, the concave portions formed in the connection portions and parts are not provided.
Dirt easily accumulates in the parts, cleaning takes time and effort
Was. Further, even after cleaning, cleaning water is stored in the recess.
It is easy to settle, and it takes time and effort to drain the water
Was. The present invention has been made by paying attention to the above circumstances.
The purpose is to provide a clean endoscope
It is to provide a mirror bending operation device. [0007] [MEANS FOR SOLVING THE PROBLEMS]
In particular, the present invention provides a fixed projection protruding outside from an operation section of an endoscope.
A fixed shaft and a rotating cylinder rotatably fitted on the fixed shaft
When,SaidProvided outside the operation unit, Non-circular outer shape
For rotating the rotary cylinderOperation
And the operation knob connected to the rotary cylinder and the operation knob.
A torque transmission mechanism that transmits the torque of the
A brake connected to the operating knob to control the rotation of the operating knob
Key mechanism, and the operation knob is rotated to rotate.
It is provided in the insertion part of the endoscope by rotating the cylinder
Endoscope bending operation device that bends the bent part
hand,An outer surface of the operation knob provided on a back surface of the operation knob;
Having an inner peripheral surface shape substantially the same as the shape, the brake mechanism,
The rotary force transmitting mechanism and the rotary cylinder are housed and covered.
Lightening recess and an inner peripheral surface of the lightening concave
To cover the lightening recess, and the outer shape of the operation knob.
A lower cover having substantially the same outer peripheral shape as the shape;
Interposed between the knob and the lower cover, the lower cover and
The operation knob and the lower cover have substantially the same external shape.
A sealing member for ensuring watertightness with the
Characterized byThings. [0008] In the above configuration,Brake mechanism and torque transmission
The mechanism, the rotating cylinder and the fixed shaft are moved by operating knobs.
Not only from above and from the sides, but also from below.
Is protected from dirt all around the
A joint is formed below the knob. Therefore,
The joint (recess) is not exposed to the top and side
It is difficult for dirt to enter into the small gaps. That is,
Effectively prevents contamination of the knob (for the dirty hands of the surgeon)
Therefore, internal mechanisms such as the brake mechanism and rotating cylinder are contaminated.
Operation that is a continuous surface without joints
Clean the top and side surfaces of the knob with alcohol gauze, etc.
Can be easily wiped off). Also, the joint is operated
It is formed near the outer peripheral portion below the knob. Of operation knob
The vicinity of the lower outer periphery is a position where the operator's hand is difficult to touch.
And easy to clean.
If a joint is provided at the position, adhesion of dirt to the joint is prevented
As well as the seemingly contradictory
The effect of facilitation can also be obtained. That is,
Two seemingly contradictory methods of preventing adhesion and improving detergency
The operation and effect can be achieved at the same time. Also the joint
Is the same as the shape of the operation knob. like this
If the shape of the joint is the same as that of the operation knob,
Prevents the formation of steps that cause adhesion of objects
You. [0009]Also,Seal between the operation knob and the bottom cover.
If a brake member is provided, internal parts such as a brake mechanism and a rotating cylinder
Department mechanismIn a sealed stateTo be completely covered,FurtherComplete
Prevents contamination and ensures reliable and good cleaning
Wear. [0010] An embodiment of the present invention will be described below with reference to the drawings.
explain. The electronic endoscope device shown in FIG. 1 is inserted into a body cavity.
Electronic endoscope 1 for performing observation and treatment, and the electronic endoscope 1
Light source device 2 for supplying illumination light to the
The electronic endoscope is electrically connected to the electronic endoscope 1 by 71.
Video processor for processing video signals transmitted from
3 and the video signal processed by the video processor 3.
Monitor 4 for displaying the subject image by
VTR5 for recording and playback and marking the image of the subject with the video signal
Printer 6 and large capacity for recording video signals
And a video disk 7 which is a storage device of
I have. The electronic endoscope 1 includes an operation unit 8 and a body endoscope.
Insertion section 9 to be inserted, provided between operation section 8 and insertion section 9
To prevent the insertion part 9 from breaking at the base and being damaged
Bend member 172 and bay provided at the tip of insertion section 9
A curved tube 10 and an imaging optical system provided at the tip of the curved tube 10
The tip 15 having an illumination optical system and the like, and the electronic endoscope 1
Connector connected to the power supply device 2 and the video processor 3
11, the operation unit 8 and the connector 11, and
Universal cord to protect guides and signal cables
12. The operation section 8 has a bending operation section 13 protruding therefrom.
The operator can operate the bending operation section 13.
With this, the bending tube 10 is moved away via a bending operation mechanism described later.
Curved apart and change the direction of tip 15 up, down, left and right
It can be changed. In addition, a video
Switch 173 for remotely controlling the video processor 3
Are provided. The electronic endoscope 1 has a distal end of an insertion portion 9.
Forceps erecting platform rotatably provided on the
Forceps raising device (not shown)
) Is provided, and like the bending operation unit 13, the operation unit
2 (see FIG. 2).
Operation), the operation wire moves forward and backward,
The angle of the forceps raising stand can be adjusted. The bending operation mechanism and the bending operation section 13,
The raising operation unit 324 is configured as follows. The casing body 16 forming the operation section 8
Has a substrate 17 fixed and arranged.
One end of the fixed shaft 18 is fixed.
Is the other end of the through hole 19 provided in the casing body 16.
Project outside. The fixed operating shaft 18 has a first operating means 20.
And the second operating means 21 are provided for each operating means.
The first sleeve 22 and the second sleeve 23
They are sequentially fitted so as to be freely rotatable. Also, the first sleeve
A first sprocket 24 is attached to the second sleeve 2.
3 is provided with a second sprocket 25. First
The second sprocket 25 and the second sprocket 25
First and second engagement grooves 136, 137 formed
To the first and second sleeves 22 and 23.
Engaging with the first and second engaging claws 134 and 135
With respect to the first and second sleeves 22 and 23,
It is attached so as to move integrally in the rotation direction. Also,
The first and second sprockets 24, 25 have wires at both ends.
Chains (both not shown) with which ears are connected mesh
Fixed. At this time, the first and second sprockets
24, 25 are the first and second engagement grooves 136, 1
37 indicates that the first and second operating means 20 and 21 are rotating
First and second engaging claws 13 when located at the center of the
4,135, and is held at a position where
The connecting portion of the wire includes first and second sprockets.
Attached so that it is evenly placed on the sockets 24 and 25
Can be [0018] Wires (4 wires) connected to the chain
Is connected to the bending tube 10, and the bending tube 10 is
When the bracket 24 rotates, it bends up and down, and the second sprocket
When the slot 25 rotates, it bends left and right.
You. The through hole 19 of the casing body 16 has a substrate
A bearing 27 having one end fixed to a cover 26 covering the
This bearing 27 has sleeves 22 and 23
Inlaid. In addition, on the outer periphery of the bearing 27,
01 is rotatably fitted to the outside.
Is to screw the support shaft fixing member 138 (see FIG. 4).
The support shaft 28 pinched and fixed to the casing body 16 by the
Supported by At this time, the casing 1 is attached to the support shaft 28.
6 is provided with a first O-ring 139 for maintaining watertightness.
ing. The bearing 27 has water between it and the brake operation plate 56.
A second O-ring 140 that keeps tight,
And a third O-ring 302 for maintaining watertightness between
I have. Next, the configuration of the first operation means 20
This will be described with reference to FIG. The upper outer surface of the first operating means 20 is formed.
The first accommodating member 29 includes one or more first sleeve fixing members.
It is fixed to the first sleeve 22 with the set screw 307 and has a cylindrical shape.
Is formed. The accommodation room 30 has a first friction plate 31 on its upper surface.
The first friction member 32 to which the first
A first leaf spring 33 bent so as to support
Is the inner circumference of the first housing member 29 and the first sleeve 2
The first inner peripheral splice is attached to the inner peripheral
Supported by a first support plate 36 having
You. The first friction plate 31 and the first friction member
32, the first leaf spring 33, and the first support plate 36
Threadedly engaged with a screw portion 37 formed on the outer peripheral surface of the housing member 29
Accommodated by an annular adjusting member 38 having a threaded portion 37
Housed in chamber 30(See Fig. 14). Here, the adjusting member 38 and the first support plate 36
Between, for example, a resin with good slidability such as PTFE
Sliding member 34 is provided on the step portion provided on the first support plate 36.
It has been dropped and the sliding member 34 is sandwiched
Thus, the adjusting member 38 is screwed. At this time, the first friction plate 32 is formed of resin.
With the engaging projection 303 provided on the surface and the first
The first engagement hole 304 provided in the friction member 32 is engaged.
By doing so, the first friction plate 31 and the first friction member 3
2 are fixed so as to rotate integrally. The first friction member 32 projects in the axial direction.
A protruding engagement claw 305 is provided.
And a second engagement hole 306 provided in the first support plate 36.
Are engaged with each other so that the first friction member 32
The first support plates 36 are adapted to rotate integrally.
ing. That is, the first friction plate 31 and the first support plate
36 rotates integrally. Therefore, the adjusting member 38 is connected to the first accommodating portion.
When the first support plate 36 is screwed into the material 29 and raised,
The first leaf spring 33 biases the first friction member 32
The force increases, and the first friction member 32
The pressure contact force between the friction plate 31 and the upper wall surface of the storage chamber 30 increases.
You. That is, by rotating the adjustment member 38,
FirstFriction plate 31Frictional force can be adjusted arbitrarily. Also, the lower side of the first support plate 36
It is supported non-rotatably on the shaft barrel 39 with the fixing screw 148.
A fixed first mounting plate 40 and the first mounting plate 40
A rotatably supported by the brake shaft cylinder 39 below the
Brake mechanism 54 constituted by the second mounting plate 41
Is provided. Also, the lower side of the first support plate 36
One end of the rake shaft cylinder 39 is pivotally attached to the first sleeve 22.
Is fitted and attached. Also, the fixing screw 148
Is urged upward by a third fixing screw 176.
And is firmly fixed to the brake shaft cylinder 39.
You. As shown in FIG. 11, the first mounting plate 40
A projection 42 is provided on the outer peripheral surface, and the first
The mounting plate 40 includes a band-shaped locking spring 43 and a biasing spring 44.
The end is fixed by a first fixing screw 174. Further, the first mounting plate 41 is provided on the upper surface of the second mounting plate 41.
A regulation having an engagement recess 45 on the outside of the attachment plate 40 in the radial direction.
The screw 4 through which the member 46 penetrates from below the second mounting plate 41
7, and the projection 42 is formed in the engagement recess 45.
Is engaged. Therefore, the second mounting plate 41 is
2 until it comes into contact with one end of the engagement recess 45 to the other end.
Can rotate. A locking spring 43 is provided on the upper surface of the second mounting plate 41.
And a pin at a position corresponding to the other end of each of the biasing springs 44.
48 are erected. The pin 48 is attached to the second mounting plate 41
On the other hand, the second mounting plate 41
It has been stopped. The first housing member 29 has an external appearance.
The upper surface and the side surface are formed integrally and are continuous without concave portions
A first operation knob 49 having a smooth surface is fitted.
ing. The first operation knob 49 is formed on the inner peripheral surface.
Formed on the outer peripheral surface of the knob engaging projection 50 and the first housing member 29
When the knob engaging groove 51 is engaged with the
Is locked, and protrudes from the housing member 29.
The first sleeve fixing screw 307 and the first operation knob
A knob engagement recess 308 formed on the inner peripheral surface of the
First, the rotation direction is locked.
When the operation knob 49 is rotated, the first accommodation member 29
And the first sleeve 22 are integrated with the first operation knob 49.
Rotate. By the way, the first operation knob 49 has an axial
Spline-shaped spline protrusion that protrudes in an arc shape in the direction
309 are formed. On the other hand, the friction of the first friction plate 31
An outer peripheral splice is provided on the outer peripheral portion of the adjusting member 38 for adjusting the frictional force.
The outer spline 310 is provided.
The first operation knob 49 and the first housing member 29 are fitted.
Then, it comes into engagement with the spline convex portion 309.
ing. Therefore, the first operation knob 49 and the first
The accommodation member 29 and the adjustment member 38 are integrally formed.
Therefore, the screw portion 37 of the adjusting member 38 is not loosened,
The pressure contact force between the plate 31 and the upper wall surface of the storage chamber 30, that is, the frictional force is
It is kept constant, and the screwing amount of the adjusting member 38
The frictional force is determined by the outer spline 310 and the spline projection 30.
Every 1/12 rotation, the same as the pitch width of spline 9Key
Can be adjusted. At this time, by reducing the pitch width
The adjustment of the frictional force can be made finer. The first operation knob 49 has a first
Are formed. First lower cover 53
The brake mechanism 54 fitted to the first sleeve 22
The first recessed recess 52 is covered while holding the
The first operation knob 49 and the first operation knob 49
Accommodating member 29, first sleeve 22, and brake mechanism 5
4 and the first lower cover 53 are integrated. Here, the first lower cover 53 has a first shell.
A rule groove 313 is formed. This first seal groove 3
13 has approximately the same outer shape as the first lower cover 53.
A first sheet having a square shape and the same cross section as the O-ring
The tool 311 (see FIG. 16A) is attached.
As a result, the first lower cover 53 and the first operation
The space between the knob 49 is kept watertight. The same shape as that of the first seal member 311 is used.
The shape is the second seal member 328 (second operation knob described later).
75 and a second lower cover 72 interposed therebetween.
I have. ) Is the same (see FIG. 16B).
See). An enlarged view of the claw portion of such a seal member (FIG. 16)
FIG. 17 shows an enlarged view of part B).Is shown, but nails like this
Because the width of the seal groove is large at the corner of the part,
Changing the shape of the material does not impair the sealing performance
I'm trying.(C) of FIG. 16 shows (a) of FIG.
A cross section along the line AA of (b) is shown. Also figure
16 (d) shows that the lower cover and the operation knob are positioned up and down.
16 when the sealing member is in the housed state when
In (e), the lower cover and the operation knob are located on the left and right.
It is a cross section in the accommodation state of the seal member in the case. By configuring the seal member in this manner,
To ensure that watertight seals are applied to parts that are not circular.
Water tightness in the shape required for miniaturization and operability.
it can. Note that this configuration isNot limited, Variant water
It can be applied to any dense parts. Also, nothing
Of course, the configuration as shown in FIG.
It may be applied to the rank. A shaft is provided above the first seal groove 313.
A plurality of holding plate locking projections 312 protruding in the direction
It is provided over the entire circumference. Press plate locking projection 312
And a retaining plate locking hole 315 at a position opposite to the first position.
Suppression formed to cover sealing member groove 313
By locking the plate 314 to the first lower cover 53,
The first seal member 311 from the first seal groove 313
Shedding is prevented. As shown in FIG.
The locking hole 315 is formed smaller than the holding plate locking projection 312
And the surrounding area is cut by a notch 316.
An indent 317 is formed. The retaining plate locking hole 315
When attached to the retaining plate locking projection 312, the notch 3
17 is deformed and bites into the retaining plate locking projection 312,
The holding plate 314 is fixed to the first lower cover 53. As described above, the first operating means 20
Are the brake mechanism 45, the adjusting member 38, the sliding member 34,
First support plate 36, first leaf spring 33, first friction member
32, the first friction plate 31, and the first housing member 29 are sequentially
Above and to the side of stacked components
In the state where the first hollow portion 52 is positioned on the lower side.
Formed by being covered by the operation knob 49
You. In addition, the first hollow portion 52 has a substantially triangular shape.
The first adhesive recess 318 having the recess is formed in the axial direction.
Five locations are provided, and are attached to the first lower cover 53 in the axial direction.
The first adhesive projection 319 provided so as to protrude is filled with an adhesive.
By being inserted into the first adhesive recess 318
The first lower cover 53 and the first operation knob 49 are fixed.
Have been. At this time, the first lower cover 53 and the first operation
For positioning with the operation knob 49, the first adhesive projection 319 is
This is achieved by contacting the first adhesive recess 318. Note that the first bonding recess 318 and the first bonding
Adhesion void formed inside the protrusion 319 when it is bonded
If the gas layer 358 is sealed by bonding,
When the adhesive is dried, the air expands and adheres before drying.
The adhesive is applied evenly as the agent tries to get out
And the adhesive strength is reduced. Therefore, the first adhesive convex portion
319 has an air vent groove 357 formed therein,
The air layer 358 is not sealed. in this way,
Filling without applying the adhesive will make the bonded area visible
Easier to work, workability is improved, and assembly is easier.
You. In addition, the first adhesive recess 318 becomes an adhesive pool.
Therefore, the adhesive does not flow during filling. Further, the second mounting plate 41 has, for example, a cutout.
An engaging portion 55 is formed by a notch or the like. This engagement part
55 includes a brake operation plate 56 and a second mounting plate 41.
At the end of the brake operation plate 56 so as to rotate integrally
The provided protrusions 57 are engaged. Also brake
The operation plate 56 is rotatably fitted on the outer circumference of the brake shaft cylinder 39.
Have been combined. At this time, the brake shaft cylinder 39 and the brake
An O-ring 320 for resistance is provided between the
The load is applied to the force when the brake operation plate 56 rotates.
Have given. The brake operation plate 56 has an outer peripheral groove.
An O-ring 58 is attached to the O-ring 5.
8 with a flange portion 59 provided on the first lower cover 53;
Between the first lower cover 53 and
The watertightness is kept between. An operation lever is provided on the brake operation plate 56.
60 are integrally formed by a second fixing screw 175.
The operation lever 60 is pivotally operated.
By rotating the brake operation plate 56, the second
The mounting plate 41 can be rotated.
You. The tip of the operation lever 60 is provided with a resinous operation.
The operation knob 61 is adhered and fixed.
Is covered with a heat-shrinkable tube 62, which is electrically insulated.
ing. Further, the height H and the width B of the operation knob 61 are set.
Are the first operation means 20, the second operation means 21, the third operation means
The respective heights h1, h2, h3 of the operating means 146 and
And is configured to be substantially the same as any one of the widths b1, b2, and b3.
And the operability is the same. As described above, the first operation knob 49 and the first
Housing member 29, first sleeve 22, brake mechanism 5
4. Each of the first lower cover 53 and the brake operation plate 56
These are integrated to form the first operation means 20.
You. The first operating means 20 is provided with a first slot.
The first sprocket is inserted into the support shaft 28 and the first sprocket
When the first sleeve 22 is engaged with the
It is fixed to the part 8. At this time, the first operation means 20 is set.
The applied brake shaft cylinder 39 is fitted on the bearing 27.
That is, for example, a cover provided on the brake shaft cylinder 39 is provided.
The fitting hole 63 is formed in a square hole shape, and the receiving hole provided in the bearing 27 is formed.
By forming the fitting shaft 64 into a prismatic shape, the bearing 27
The brake shaft cylinder 39 is non-rotatably fitted and engaged. On the other hand, the operation lever 60 is moved from the state shown in FIG.
When rotated by X degrees in the direction of the mark A (see FIG. 8), the brake
The second mounting plate 41 rotates via the operation plate 56. It
As a result, the pin 48 is moved to the locking spring 43 and the biasing spring 44.
Is elastically deformed in the axial direction (see FIG. 11). Ma
The other end of the locking spring 43 is connected to the first inside of the first support plate 36.
It engages with the peripheral spline 35. By this engagement, the first
The first support plate 36 is coupled to the mounting plate 40 of the
Of the support plate 36 is prevented. Therefore, this state
When the first operation knob 49 is rotated in the state,
The friction force between the friction plate 31 and the first housing member 29 causes the rotation resistance.
Become anti. The rotation amount X ° of the operation lever 60 is curved.
Irrespective of the bending angle of the tube 10, constantly constant rotation
Quantity. Therefore, various curves with different bending angles
When operating the operation unit 13, the operation feeling is the same.
Good workability. The first operating means 20 is rotated to bend.
When the bending operation of the section 10 is performed, the first operation means 20
The rotational force is applied to the flange 5 provided on the first lower cover 53.
9 through the O-ring 58 to the brake operation plate 56Biography
ReachedHowever, at this time, the resistance O-ring 320
And the rotation of the brake operation plate 56 is prevented,
The so-called corotation phenomenon can be prevented, and the rotation of the first operating means 20 can be prevented.
Blurring such that the rolling resistance is naturally added or released
The malfunction of the parking mechanism can be prevented. Therefore, the first operation
The operability of the working means 20 is not impaired. The resistance O-ring 320 is used for brake operation.
Since it gives resistance to the rotation of the plate 56, a plurality of
Or crush the O-ringWire diameter・ Inner diameter
By increasing the rotational resistance by increasing
The effect of preventing co-rotation also increases. Next, FIG. 5 shows the second operating means 21.
It will be described with reference to FIG. The second receiving member 65 has an upward
And a ring-shaped second leaf spring 66, and a second friction
The second support plate 68 provided with the rubbing plate 67 is sequentially moved up and down.
It is housed freely. These members are provided in the second housing
When the member 65 is attached to the second sleeve 23,
The flange 69 provided on the leave 23 removes it.
Outflow is prevented. Further, the upper surface of the second friction plate 67
On the side, a press-contact plate 71 is provided so as to be vertically movable. This
A rectangular hole 70 is provided at the center of the pressure contact plate 71 of FIG. The second lower side of the second housing member 65
A cover 72 is attached. This second lower cover
72 and the second housing member 65 are, for example, a second housing member.
The lower surface of 65 is a substantially rectangular shape in which four sides of a circle are
The upper surface of the cover 72 is fitted to the lower surface of the second housing member 65.
By providing the square groove, the connection is made non-rotatable. Ma
In addition, the second lower cover 72 is fixed by the first fixing member 73.
The first fixing member 73 is supported and
The second housing member 6 is screwed onto the leave 23.
5 and the first fixing member 73 to be sandwiched and fixed.
At this time, the O-rings 74, 14 are attached to the first fixing member 73.
9, whereby the second lower cover 7 is provided.
Watertightness between the second operating means 20 and the first operating means 20 is ensured.
You. The upper surface of the press contact plate 71 has an opening at the center.
A second operation knob 75 is provided. This second
The operation knob 75 has an upper surface and a side surface which are integrally
Formed on a continuous smooth surface without formed recesses
I have. Further, the second operation knob 75 is connected to the second lower cover 7.
2 and a stepped portion 76 provided on the entire circumference.
You. Also, the stepped portion 76 is a second claw portion 77 (see FIG. 12).
The second operating knob 75 and the second lower cover 7
2 rotates together and prevents displacement during rotation.
ing. As described above, the second operating means 21
On the lower cover 72, the second housing member 65, the second plate
The spring 66, the second friction plate 67, and the press contact plate 71 are sequentially stacked.
It is configured to be. Also, the second lower cover 72
Is a second adhesive recess 32 having a recess having a substantially triangular shape.
6 are provided in six places in the axial direction, and the second
The operation knob 75 has an axial direction similar to the second lower cover 72.
A second adhesive projection 325 protruding toward is provided.
You. Then, the second adhesive concave portion 326 filled with the adhesive is
The second adhesive protrusion 325 is inserted and fitted to the second lower cover 72.
And the second operation knob 75 are fixed. At this time,
Positioning of the second lower cover 72 and the second operation knob 75
Is performed by contacting the steps 76 with each other. Here, the outer periphery of the second lower cover 72
Two seal grooves 327 are formed. This second sea
Inside the groove 327, the outer shape is the same as that of the second lower cover 72.
A second hexagonal and substantially hexagonal cross-section identical to the O-ring
Seal member 328 is attached,
Between the second operation knob 75 and the second lower cover 72.
Watertightness is ensured. Further, the second lower cover 72 has a
A cylindrical rib 80 is provided to protrude in the axial direction. This
Rib 80 restricts the radial movement of the press contact plate 71
In both cases, the second bonding convex portion 325 and the second bonding concave portion 3
Adhesive sticking out from 26 adheres to parts such as pressure contact plate 71
Protected against As described above, the second operation knob 75 and the second
Of the receiving member 65, the pressure contact plate 71, the second sleeve 23,
The second lower cover 72 is integrated with each other to perform the second operation.
The operating means 21 is configured. The second operating means 21 is provided for the second sleeve 2
3 is inserted into the fixed shaft 18 and
The first operation is performed by the engagement of the second sleeve 23.
The retaining member 103 is attached after the means 20 is attached.
Thus, the fixed shaft 18 is prevented from falling off. Note that the second sleeve 23 is fixed to the inner peripheral surface.
An O-ring 144 is interposed between the shaft 18. Ma
When the first operating means 20 is rotated, the O-ring 14
The co-rotation phenomenon in which the second operating means 21 rotates through the control unit 9
Is generated between the second sleeve 23 and the fixed shaft 18.
It can be reduced by frictional resistance. Further, sliding of the O-ring 144 and the fixed shaft 18
A ventilation groove 145 (see FIG. 9B) that does not touch the surface
And watertight inside a third operation means 146 described later.
Confirmation can be performed. As shown in FIG. 9, the fixed shaft 18 has
A part of the diameter is located at a position corresponding to the upper end face of the second operating means 21.
Locking notch 104 cut in the direction
You. In addition, the fixed shaft 18 above the locking notch 104
A brake adjusting screw portion 105 is formed in the outer peripheral portion of
I have. The shape of the brake adjusting screw 105 is cylindrical.
It has a substantially prismatic shape with four sides of the screw cut off.
The retaining member 103 fits into the rake adjustment screw part 105
Have been. As shown in FIG. 9C, a retaining member
103 has a substantially prismatic shape obtained by cutting off four sides of a cylinder
You. Further, as shown in FIG.
03 is a rectangular hole 70 of which one side is provided in the pressure contact plate 71.
Of the brake adjustment screw 10
5 is open at a length corresponding to one side. Also, retaining
Member 103 holds the second operating means 21 on the fixed shaft 18.
When attached, the brake adjusting screw portion 105 and the pressure contact plate 71
The fixed shaft 18 is locked by the orientation of the
By inserting and removing the notch 104 from the long side direction of the rectangular hole 70
As a result, the press contact plate 71 can be locked so as not to rotate. As shown in FIG.
On the inner periphery, a lock that fits into the lock notch 104 of the fixed shaft 18
Corresponding to the flat part 106 and the brake adjusting screw part 105
Square hole shape and non-rotatable with brake adjustment screw 105
An engaging ring portion 107 to be engaged is provided. FIG.
As shown in (d) of FIG.
Detachment of retaining surface 161 and retaining notch 104
When the stop lock surface 162 abuts, the retaining portion
The material 103 is prevented from coming off upward. Therefore,
The first stoppering contact surface 163 on the lower surface of the fastening member 103;
Second retaining contact surface 164 on the upper surface of second sleeve 23
And the second operating means 21 and the first
The detachment of the operation means 20 is prevented. Also, a retaining member
103 prevents the fixed shaft 18 and the press contact plate 71 from rotating.
Has become. The retaining member 103 is attached to the fixed shaft 18.
When attached, the retaining member 103 and the pressure contact plate 71
The gap formed between the rectangular hole 70 and the hole
The member 329 is inserted. The retaining member 329 is
Contact the second contact surface 157 which is the short side of the rectangular hole 70
Second contact surface 158 and corner of outer periphery of retaining member 103
The first abutment on the first abutment surface 155 which is one side of the pillar portion
A contact surface 156. Fit retaining member 329
By inserting, the retaining member 103 is
The movement in the long side direction is restricted and the falling off from the fixed shaft 18
Is prevented. The retaining projection 329 is provided with the knob projection 1
59 is provided, and is gripped when inserted into the rectangular hole 70.
It is easy to do. The knob projection 159 is fixed to prevent it from falling off.
With the member 329 fitted, the pressure contact plate 71 was provided.
It is engaged with the projection storage hole 160. With this,
The fixing member 329 can move in the short side direction of the rectangular hole 70.
Restricted and secure fixing of the retaining member 103 without displacement
Can be performed. In addition, the retaining member 329 for retaining
Is upward at the lower end of the brake pushing member 108 described later.
Dropout is prevented. Therefore, retaining member 103
Does not fall off the fixed shaft. On the other hand, the press contact plate 71 is
Pressed by the brake pressing member 108
The second friction plate 67 is pressed against the second friction plate 67. You
That is, depending on the amount of screwing of the brake pressing member 108,
The frictional force between the press contact plate 71 and the second friction plate 67 can be adjusted.
It has become. Incidentally, the brake pressing member 108
Is that the third lower cover 109 is
The second fixing member 110 and the third mounting plate 1
11 is screw-fixed, and the second fixing member 110 and the third
When the attachment plate 111 abuts, it is loosely fitted to
It is held so that it can roll freely. Second fixing member 110
Project from the lower end of the third lower cover 109.
The pressing of the pressing plate 71 is applied to the lower end of the second fixing member 110.
This is done. Also, the third mounting plate 111 and the fixed shaft
18 is screwed into the brake adjusting screw 105 and the third
This is performed by the inner peripheral thread portion 112 provided on the attachment plate 111.
ing. Further, a step portion at the lower end of the third lower cover 109
113 is provided with an O-ring 114, which
Between the second operating knob 75 and the third lower cover 109.
Water tightness is secured. On the other hand, the brake adjusting screw 1 of the fixed shaft 18
05 is smaller than the brake adjustment screw 105.
The regulating plate engaging portion 115 having a rectangular prism shape is
It is provided eccentrically from the center (see FIG. 13). Third
Of the rotation restricting pin 116 fixed to the mounting plate 111 by a screw.
Has a rotation regulating groove 117 (see FIG. 13) for regulating the amount of rotation.
Rotation restricting plate 118 is formed by a square hole provided in the center thereof.
A non-rotatable and constant direction with respect to the regulating plate engaging portion 115
It is held and attached. Upper part of regulating plate engaging portion 115
The third fixing member 120 is screwed into the screw portion 119 provided in the
The rotation restricting plate 118 is fixed by wearing.
Further, the third fixing member 120 is fixed by a set screw 121.
Since it is urged upward, it is firmly fixed to the screw portion 119.
You. The rotational resistance of the second operating means 21 is as described above.
As shown in FIG.
Press plate 71 and second friction plate pressed by
This is a pressing force (frictional force) with the contact member 67. This second operating means
The rotation resistance of 21 is the screwing of the brake pushing member 108
Rotation of the brake pushing member 108 is adjusted by the amount
As the amount is regulated by the rotation regulating plate 118,
The rotation resistance of the second operating means 21 is
Screwing of the brake pushing member 108 regulated by 8
It can be adjusted in a certain range depending on the amount. Therefore, the break
The push member 108 is screwed into the fixed shaft 18 to perform a second operation.
After the desired rotation resistance of the means 21 is obtained, the rotation is restricted.
The rotation restricting pin 116 is moved to the third
The fixing screw holes 122 provided on the entire circumference of the mounting plate 111
Secure with screws. In this embodiment, the fixing screw holes 122 are used.
Are provided at 18 places, and the brake pressing member 108
The screwing amount is 1/18 of the brake adjusting screw 105.
Can be adjusted for each node. Of course, there are many fixing screw holes 122
The more, the finer the adjustment. Further, the rotation regulating pin 116 is
When the screw 105 is a left-handed screw, the rotation
Rotational resistance is maximum when fixed to the left end of control groove 117
When the brake adjustment screw 105 is a right-hand thread, the
It becomes a small value. Note that the upper surface of the third mounting plate 111
The rake pushing member 108 rotates within the range of the rotation regulating groove 117.
When it is turned, the rotation regulating pin 116 is elastically
Is provided with a click spring 123 which engages with the second spring. As described above, the third lower cover 10
9 is provided rotatably with respect to the brake pressing member 108.
So that the upper surface of the third lower cover 109 is
Positioning table consisting of numerical position display 332 (see FIG. 13)
Indicating portion 331 provided on the rotation restricting plate 118;
33 and the third position so that the specific position display 332 matches.
The cover 109 is rotated. Next, the third lower cover 10
9 has a screw fixing hole at a position corresponding to the fixing screw hole 122.
125 is provided, and is screwed into the fixing screw hole 122.
Stop screw 126 passes through the rotation regulating plate 118 and is fixed.
In the fixing screw hole 122 so as to contact the bottom of the hole 125
Screwed. Therefore, the stop screw 126
The third lower cover 109 and the third mounting plate 111 cannot rotate.
And the third lower cover 109 is fixed at a predetermined position.
You. Further, on the outer periphery of the upper surface of the third lower cover 109,
Is the operation of the third operation means 146 similarly to the second claw 77
A third claw portion 124 for improving the performance is provided.
You. Also, the inner mechanism such as the rotation restricting plate 118 is covered.
Therefore, the third operation knob 128 is connected to the operation knob fixing screw 33.
By 0,334The third operation knob 1 which is screwed
By rotation of 28, it is strengthened by adhesion so that the screw is not loosened
It is fixed to.The third operation knob 128 is
Continuous sliding without concave part where upper surface and side surface are integrally formed
It is formed on the surface of kana. Further, the third lower cover 109 and the third operation
The operation knob 128 is attached to the third lower cover 109.
O-ring 129 ensures watertightness between them
In this state, the third operation means 146 is formed. Here, the third operation knob 128 and the third lower knob
The cover 109 is a resin molded product, and the third operation knob
Until the bottom 128 and the third lower cover 109 contact each other.
Combine the operation knob fixing screws 330 and 334 provided on each
A third operating knob 128 obtained when screwed and a third lower knob
The position of the cover 109 does not change the mold for molding.
It will be constant as long as possible. Therefore, the third operation knob 128 and the third
And the third claw portion 124
The position table 332 is displayed in the positioning table so that it becomes the desired position.
By specifying and setting in advance from the indicating unit 331,
Position of the third claw part 124 in all the bending operation parts 13
And the operability of the third operating means 146 is secured.
It is. At this time, the click spring 123 is
128 is prevented from falling off
Is stopped. When disassembling the bending operation section 13,
Third operation knob 128, set screw 121, third fixing portion
Reverse the above assembly procedure, such as removing material 120
However, the third operation knob 128 is strong as described above.
It is fixed firmly and it takes time to remove it. Therefore, on the knob of the third operation knob 128
The surface 147 is formed thinner and flatter than the side surface.
In addition, the amount of deformation of the knob upper surface 147 is limited to the elastic range of the knob upper surface 147.
Position, that is, the position where the knob upper surface 147 is not broken
Is provided so as to abut on the third fixing member 120
I have. Therefore, the knob upper surface 147 is thin.
It is easy to destroy. Thereby, the bending operation unit 13
The knob upper surface 147 is destroyed, and the set screw 121 and the third
It is disassembled by removing the fixing member 120 and disassembly work
Is labor-saving. On the other hand, against external force due to falling etc.
When the external force acts on the third fixing member 120,
And destruction is prevented. Further, the third operation knob 128 has a third claw portion.
Since 124 is thick, troubles in resin molding are eliminated.
Therefore, on the back surface of the third claw portion 124, the same four
A third lightening recess 335 is formed at the position. This
The filling member 336 is inserted into the third lightening concave portion 335.
It is glued and fixed in the inserted state.
The bottom surface of the third operation means 146 is flat to facilitate washing.
You. The filling member 336 has four convex portions.
It is possible to use only one having it, or to use four convex members.
Good. Further, as described above, the third operation means 146
The rotation operation amount X ° is determined by an operation level provided in the first operation means 20.
Like the bar 60, regardless of the bending angle of the bending tube 10
There is a certain amount of rotation. Therefore, different bending angles
When operating the various bending operation units 13 having the
Since they are the same, operability is good. Next, the configuration of the start-up operation section 324 will be described.
I will tell. As described above, the through hole 1 of the casing body 16
9, one end is fixed to a cover 26 covering the substrate 17.
A bearing 27 is provided.
The rotation shaft 301 is rotatably fitted to the outside, and the rising rotation shaft
301 is supported by the support shaft 28. At this time,
The shaft 28 keeps water tight with the casing body 16.
Water is applied between the first O-ring 139 and the rising rotation shaft 301.
A fourth O-ring 360 to keep tight,
The receiver 27 has a third port for maintaining watertightness with the brake operation plate 56.
2 O-ring 140 and the watertightness between the erecting rotation shaft 301
And a third O-ring 302 for keeping this
A lever mounting screw 338 is attached to the
The extension end of the raising operation lever 337 is integrally attached.
Fixed. Also, at the tip of the raising operation lever 337,
Is provided with a resin-made raising knob 322. This
The raising knob 322 is provided with the mounting plate 340 and the raising operation lever.
337 and pinch fixing screw 339
Is defined. Further, the lower end of the raising rotary shaft 301 is
It has a substantially prismatic shape with one cut off. And this
The lower end of the raising rotary shaft 301 is rotatably inserted into the support shaft 28.
Inserted into the square hole at the center of the fitted rotating bearing 341
Is mounted so that it cannot rotate.
They rotate together. Further, the lower end of the rising rotary bearing 341 has a
The first link 342 is fixed by the first link mounting screw 343.
Is fixed. The first link 342 has a first end
One end of the second link 345 rotates through the pin 344
It is provided freely. Also, the second link 345
The other end is connected via a second pin 346 as shown in FIG.
The pedestal 347 is provided rotatably. Pedestal 347
7 are fixed to the substrate 17 as shown in FIG.
A concave guide wall 351 is provided. Therefore, the rotational movement of the rising rotary shaft 301
Is connected via the rising rotary bearing 341 and the first link 342
Directly by the second link 345 and the guide wall 351.
It was converted to linear motion and provided at the tip 15 of the insertion section 9
Move the operation wire of the forceps raising device back and forth, and
The angle can be adjusted. The first link 342, the rising rotary shaft 3
01, the rising rotary bearing 341 has a common fan-shaped
A notch is provided, and the cover 26 and the bearing 27 are
By increasing the length of one of the fixing screws
The first contact surface 34 that contacts the formed stopper screw 348
9 and a second contact surface 350 are provided. Accordingly
And a rotating shaft 301 and a rotating bearing that rotate integrally
The first contact surface 349 and the second contact surface 350
The second link 345 and the base
The amount of movement of the seat 347 is regulated, and
The degree is regulated. Note that when the forceps raising table is raised up to the maximum,
The position of the upper knob 322 (angle Y °... See FIG. 8) raises the forceps.
All without change depending on the size of the elevation angle of the upper stand
To a certain position (angle) with the raising operation unit 324
The stopper screw 348 and the first contact surface 349 are set
Have been. Therefore, the raising angle of the forceps raising table is different
Even when the electronic endoscope 1 is used, the maximum raising of the forceps raising base is possible.
The upper position can be determined by the position of the raising knob 322, and the
Erroneous operations such as excessive lifting can be prevented, and operability is good. By the way, the raising operation section 324 and the first operation
The brake mechanism 54 provided in the means 20 is provided with a casing
So that they are sequentially stacked on the main body 16 and positioned vertically
The lifting rotary shaft 301 and the brake operation plate 5
Since 6 has the same outer diameter, there are few irregularities in appearance. I
Therefore, when cleaning, it is easy to wipe off
It is easy to drain and drains well. Further, a raising operation lever for actually performing an operation
337 and the operation lever 60 are provided at the same height.
Therefore, the operational feeling is the same and the operability is good. Therefore, and
Raising operation lever 337 and operation lever that mainly rotate
So that the rotation direction is reversed so as not to interfere with
And set so that the rotation angle does not interfere
Have been. On the other hand, as shown in FIG.
337 and the operation lever 60 are respectively
And not the radiation direction from the center of the brake operation plate 56,
Mounted eccentrically parallel to the central axis,
Interference is prevented. At this time, the raising knob 322 and
An operation lever 337 to which the operation knob 61 is attached;
The end of 60 is connected with the rising rotation shaft 301 and the brake operation plate 56.
Is bent from the center of the
The upper operation lever 337 and the operation lever 60 are eccentric.
Nevertheless, the operation feeling when operating is the raising operation lever
It feels like 337 and the operating lever 60 make a circumferential motion
Is obtained, so that the operability is good. Here, the operation knob 61 is attached.
At the end of the operating lever 60, at the center of the operating lever 60
A lever narrow portion 364 which is narrower than that is formed.
And a lever mounting portion 353 provided on the operation knob 61.
An operation lever is provided in the lever fixing hole 365 provided in the deep part.
-60 and the lever narrow portion 364 are fitted and
Wearing is fixed. At this time, the operation lever 60 is covered.
The heat-shrinkable tube 62 is also lever
-It is inserted into the mounting portion 353 and fixed. Therefore,
Make the width B of the operation knob 61 larger than the width of the operation lever 60
The operation knob 61 can be
Attached. As a result, the operation knob 61 is compact.
It becomes easy to pinch. Also, the operation knob 61 is incorrectly set.
The operability is good because there is no touch. By the way, as shown in FIG.
Operation knob 49, second operation knob 75, third operation knob 12
8, each of the operation knob 61 and the raising knob 322
On the upper surface of the, the operation content and operation direction of each operation means
And the symbols and characters indicating the direction in which the tip 15 moves.
A sign 152 is provided. That is, on the upper surface of the first operation knob 49,
Indicates the operation direction and rotation resistance of the first operation means 20.
(Meaning up and down (UP
/ DOWN) meaning “U and D”)
A sign 323 is provided. The second operation knob 75 has an upper surface
That the operating direction of the operating means 21 and the rotational resistance are added.
The sign that meansLeft and rightWhat to operate (RIGHT / LE
First sign 3 which is "R and L") meaning FT)
23 are provided. On the upper surface of the operation knob 60,Added times
Symbol that means to cancel the rolling resistance (means FREE
“F”) and the symbol “△” indicating the operation directionNo.
1 sign 323 and the rotational resistance of the first operating means 20 are attached.
(Meaning up and down (U
P / DOWN), which means "UD").
321 are provided. On the upper surface of the third operation knob 128,Added
(FREE
From "F" which means
BecomeThe first sign 323 and the rotational resistance of the second operating
A symbol that means to addLeft and rightOperate
"RL" for (RIGHT / LEFT)
A second sign 321 is provided. On the upper surface of the raising knob 322,Raising stand
Symbols ("U" meaning UP) and operations to indicate
Consists of the symbol "△" indicating the directionA first sign 323,
Means to raise the forceps raising table provided at the tip 15
("EL" means ELEVATOR)
EV. )) Is provided.
You. In any case, the first sign 323 is the main engine
The second sign 321 is a supplementary description.
Therefore, the size of the first sign is larger than the size of the second sign.
Also, the function is shown clearly by making it larger. Sa
Furthermore, the size of each sign of the first sign 323 is made the same.
At the same time, the first sign 323 is more than the second sign 321.
The functions are clearly shown by being located on the outer peripheral side.
ing. Note that such a configuration has a main function and a sub function.
Operation part to perform, for example, a suction control unit, an air / water supply control unit,
You may apply to a forceps insertion part, a control switch, etc. The first sign 323 and the first sign 323
The sign 321 of No. 2 shows all signs when viewed from one place.
As shown, all the markings are on the same plane.
In addition, the operation knob 60, the first operation means 20, the second operation
The outer diameter of the means 21 and the third operating means 146 is gradually reduced.
And the raising knob 322 is at least in the raised state.
Are first claw portions provided at five places of the first operation means 20
The first finger hook 354, which has a small diameter between 355 comrades,
Positioning all operating means to the initial position
All signs are visible when placed
Therefore, the function of the operation means is obvious and easy to understand. In addition,
Even when the user is not in the state of lifting, the raising knob 322 is the first finger.
Raising angle of forceps raising base so as to be located at hanging section 354
May be set. [0100] By the way, the sign 152 carves the knob surface.
Is formed by pouring paint into it.
You. Conventionally, these engraved holes are used to pour paint here.
After wiping off excess paint or surface tension.
When the paint dries, the paint in the center of the mark will be concave.
It was easy to accumulate dirt. But
However, in the present embodiment, the engraving corresponds to the outer periphery of the mark 152.
Because it is provided only in the part, the concave part of the paint when drying
Less minutes. Therefore, it becomes difficult for dirt to collect
I have. In addition, the sign 152 is engraved and the paint is poured.
Not by printing, or by molding the knob with resin.
When making it, it is provided by making only the text part a satin finish, etc.
Is also good. The first, second, and third operation means 20,
21 and 146, the first operation means 20 is actually
It is closest to the hand that performs the operation,
In addition to hooking a finger on the first finger hook 354,
It is possible to operate even if you put your finger on one claw part 355
is necessary. Therefore, as shown in FIG.
Non-slip 359 on all outer sides of part 355 (5 places)
Is provided to prevent slipping when placing a finger,
It is easy to do. As described above, the bending operation of the present embodiment
The section 13 is turned by the rotation operation of the first operation means 20.
10 is bent up and down, and the rotation operation of the second operation means 21 is performed.
To bend the bending tube 10 left and right by the third operating means 1
The rotation of the second operation means 21 is controlled by the rotation of 46
An operation lever protruding from the brake operation plate 56 is provided.
The rotation of the first operation means 20 is controlled by the rotation operation of the
The forceps raising base is controlled by rotating the raising operation section 324.
The raising angle can be adjusted.
Operating means 20, 21, 146 and brake operating plate 56
And the raising rotary shaft 301 and the casing body 16 are watertight.
The structure of the operation unit 8 is
When kept watertight. However, this embodiment is not limited to this.
In addition, the first operating means 20, the second operating means 21,
The upper and side surfaces of the operating means 146 of the
Operation knob 49, second operation knob 75, third operation knob 1
The surface is continuously coated by 28. Sand
The operation knobs 49, 75, and 128 are provided in the bending operation unit 1.
3. Cover all components in 3 from above and side
And the coating surface is continuous with no joints.
Formed on the surface. Therefore, the bending operation according to the present embodiment is performed.
The working unit 13 is hardly contaminated and has good cleaning properties.
It has an excellent effect in practical use. The first operating means 20 and the second operating means
There is a contact surface of the first fixing member 73 between the step 21 and
In addition, the second operating means 21 and the third operating means 146
Since an O-ring 114 is provided between them,
The part is a connection surface where the continuous surface is broken.
However, these parts are located almost in the center of the operating means.
The operator who operates the operation unit 8
It is not easily touched because it is not directly touched. Also,
There are only a few connection surfaces for one operation means
Since it is not used, it is hardly soiled and easy to clean. That is, the bending operation section 13 of the present embodiment operates
Since there is no connection surface at the part touched by the author, it is easy to operate and
The cleaning properties are good. The first operating means 20 and the second operating hand
On the top and side surfaces of the step 21 and the third operation means 146,
Except for the slip stopper 359 provided on the first operation knob 49,
There are no recesses, and the protrusions are composed of gentle slopes
As a result, dirt hardly accumulates and water easily flows. Further, the operation knobs 49, 75, 128 are
Each of the operation means 20, 21 and 146 is located outside the center of rotation.
Over the circumference, the height of the knob is the same or gradually
It's getting worse. In other words, the height change of the knob decreases
It is changing only. Therefore, the operation knobs 49, 7
Wash water applied to 5,128 easily flows in one direction
Has become. The thickness of the operation knobs 49, 75, 128
Is thick at the center and thin at the maximum outer diameter. But
Therefore, it is easy for a brush or the like to enter at the time of washing and it is easy to wash. Ma
In addition, the lower part covering the lower surface of each of the operation means 20, 21, 146
Covers 53, 72, 109 and operation knobs 49, 75, 12
8 and seal members 170, 102, 129
Watertightness is maintained. Therefore, the inside of the operation unit 8 is washed.
No clean water, etc.
Easy to clean because there are no difficult parts. Conventionally, the uppermost part of the endoscope operating section 8 is
To the operating knob (operation knob 128 in this embodiment)
Is used to operate with the hand opposite to the hand holding the operation unit.
A knob with a raised center is provided for easy operation.
Was. As a result, this knob protrudes from the operation knob.
However, when the operation unit 8 is enlarged,
Was in the way. Also, when the operation unit 8 is accidentally dropped
The knob may be easily damaged when hit.
Was. In this embodiment, the upper surface of the operation knob 128 is formed flat.
The operation unit 8 is made smaller and hardly damaged.
can do. Conventionally, a raising operation knob and a brake operation
The levers rotate in the same way, but the levers
The mounting height was changed to prevent interference. Ma
In addition, to improve operability while maintaining the same operational feeling,
Some heights were the same, but to avoid interference
The operating angle of the lever has been reduced, and the
The upper angle could not be increased. That is, as shown in FIG.
As shown, lever interference between lever 60 and lever 337
The part 363 is generated, and the operation lever 60 is raised rightward.
It is necessary to rotate the operation lever 337 to the left to reduce the rotation angle.
was there. However, in this embodiment, FIG.
As described above, the brake operation plate 56 and the raising rotary shaft 301
The operation lever 60 and the raising operation lever 3 are lifted downward.
37 is mounted eccentrically, so the rotation angle is large.
And the operating lever can be provided on the same plane.
Wear. Conventionally, an operation in which the lower side is covered with a cover is provided.
The knob has an O-ring between the bottom cover and
Is connected to the lower cover by adhesive,
The O-ring seal surface is also glued to increase the degree
Was. Therefore, after assembly, the water tightness between the operation knob and the lower cover
Even if secured, the watertight seal is due to adhesion
Or O-ring is unknown.
Even if there is a condition, it cannot be confirmed, and the adhesion deteriorates due to aging.
At that time, a water leak had occurred. However, this implementation
In the example, as described above, the first seal member 311 and the
The bonding portion 32 is located closer to the fixed shaft 18 than the sealing member 328 of FIG.
5,326,318,319 are provided and adhered to the sealing surface
Is not performed, this may cause such inconvenience
There is no. [0113] By the way, conventionally, there is no forceps raising device inside.
The endoscope is more maneuverable than an endoscope without a device forceps raising device.
The bending operation unit (actual operation unit)
(Corresponding to the bending operation unit 13 of the embodiment)It's getting higher
I wasFor this reason, an endoscope having a forceps raising device is
The operation sensation is different from an endoscope that does not
In an endoscope having a forceps raising device, the operation unit is gripped.
The bending operation part was separated from the hand, and the operability was poor.
In addition, a fixed shaft to which the bending operation unit is fitted (the bay fixing
(Corresponding to the fixed shaft 18).
Can not be used, cannot be manufactured at low cost, and parts management is troublesome
There was a problem such as becoming. Therefore, the forceps raising device
The operation feeling of an endoscope with and without an endoscope is the same,
In addition, a forceps raising device is provided for compatibility.
An endoscope without the above may be configured as shown in FIG. That is, the shake in the configuration shown in FIG.
Brake operation plate 56 and the rising rotation shaft 301
And a second brake operation plate 361 integrally formed with
You. The lower end of the second brake operation plate 361 has a bearing.
27 and the support shaft fixing member 138.
Also, when the upper end is fitted to the brake shaft cylinder 39 externally,
First, it is fitted inside the flange portion 59 of the first lower cover 53, and
And is engaged with the second mounting plate 41. According to this configuration, the second brake operation plate
Reference numeral 361 denotes an O-ring 58 which is the first operation means,
Watertight sealing with the fourth O-ring 360 with the fixing member 138
Is done. At this time, the second O-ring 140 and the third O-ring
Ring 302 does not function as a watertight seal member,
Like the O-ring 320, the second brake operation plate 36
It functions as a member for adding a rotation resistance. Note that this configuration
The second brake operation plate 361 and the first operation means 20
The number of seal members that prevent co-rotation with
There is a further effect that the prevention effect is enhanced. Further, as shown in FIG.
The thin knob upper surface 147 at the center of the
Alternatively, the knob upper surface concave portion 362 may be formed. With this configuration
Is difficult to apply force to the thin knob upper surface 147
Therefore, this portion is less likely to be damaged. Endoscopes are basic
Hold the operation unit with your left hand and operate the angle knob and air supply,
Operate the water supply and suction buttons. Also, use your right hand to
Perform push / pull and twist operations. Depending on the surgeon, especially the hand
If you are a small person, use the RL angle knob (the third operation of this embodiment).
(Corresponding to the knob 128). So, the operation unit
Press the RL angle knob with your left hand while pressing the
Sometimes. The RL-FE knob is conventionally a flat top
Because there was no, pressing the operation unit against the chest (necessarily R
L-FE knob will be pressed against the chest) RL-
The FE knob rotates unintentionally, and
Sometimes a gauge was applied. However, FIG.
According to the configuration, the upper surface of the RL-FE knob is flat,
It does not rotate when pressed against the chest. [0117] As described above, the endoscope bay according to the present invention is provided.
Music operation deviceNow, the brake mechanism and the torque transmission mechanism
The rotating cylinder and the fixed shaft are moved upward by an operation knob.
Not only from the side, but also from below,
Under the operating knob while being protected from dirt
The junction is formed on the side. Therefore, the joint (concave
Part) is not exposed to the top and side
It is difficult for dirt to enter into the gap. That is, the operation knob
Effectively prevents contamination (the operator's dirty hands
Internal mechanisms such as rake mechanism and rotating cylinder are not contaminated
Together with the operation knob, which is a continuous surface without joints
Easily remove surface and side stains with alcohol gauze etc.
Can be wiped off). Also, make sure that the joint is under the operation knob.
Is formed in the vicinity of the outer peripheral portion. Outside below the operating knob
The vicinity of the periphery is a position where the operator's hand is difficult to touch.
Also, because it is a position that is easy to clean,
If the joint is provided, it is possible to prevent the attachment of filth to the joint.
In both cases, this is a seemingly contradictory facilitation of cleaning.
The effect can also be obtained. In other words, prevention of adhesion of waste
Seemingly contradictory actions and effects of improved cleaning
Fruits can be played simultaneously. Also, the shape of the joint
It has the same shape as the operation knob. Thus, joining
If the shape of the part is the same as that of the operation knob,
It is possible to prevent the formation of a step portion that causes the step.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram of an electronic endoscope apparatus. FIG. 2 is a configuration diagram of an operation unit of the electronic endoscope in FIG. FIG. 3 is a side view showing an internal structure of a bending operation unit of the electronic endoscope in FIG. FIG. 4 is a side view showing an internal structure of a first operation unit constituting the bending operation unit of FIG. 3; FIG. 5 is a side view showing the internal structure of second and third operation means constituting the bending operation section of FIG. 3; FIG. 6 is a configuration diagram of a raising operation unit of the electronic endoscope in FIG. 1; FIG. 7 is a configuration diagram near a raising rotation axis in a raising operation section of the electronic endoscope in FIG. 1; FIG. 8 is a schematic diagram showing a state around a rotation axis of an operation lever and a raising operation lever. FIG. 9 is a perspective view of a retaining member. FIG. 10 is a plan view of a bending operation unit. FIG. 11 is a plan view showing an internal structure of a first operation unit of the bending operation unit. FIG. 12 is a plan view showing the internal structure of the second operation means 21. FIG. 13 is a plan view showing the internal structure of the third operation means 146. FIG. 14 is an explanatory diagram showing a procedure for assembling internal components of the first operation means 20; FIG. 15 is a side view showing the internal structure of the first operation means of the endoscope having no forceps raising device. FIG. 16A is a diagram showing a shape of a first seal member,
(B) is a view showing the shape of the second seal member, (c) is a cross-sectional view along the line AA of (a) and (b), (d) is a lower cover and an operation knob positioned vertically. FIG. 7E is a cross-sectional view in a state where the seal member is housed when the lower cover and the operation knob are positioned on the left and right sides when the seal member is housed. 17 is an enlarged view of a portion B in FIGS. 16 (a) and 16 (b). FIG. 18 is a side view showing a modification of the third operation means. FIG. 19 is a conventional structural view of an operation lever and a raising operation lever. DESCRIPTION OF SYMBOLS 1 ... endoscope, 8 ... operation part, 10 ... bending part, 13 ... bending operation part (bending operation device), 22, 23 sleeve (rotary cylinder), 49, 75, 128 ... operation knob .

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisao Yabe 2-43-2 Hatagaya, Shibuya-ku, Tokyo O-limpus Optical Industry Co., Ltd. (72) Inventor Hideo Ito 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (56) References JP-A-1-185237 (JP, A) JP-A-1-181836 (JP, A) JP-A 62-48303 (JP, U) JP-A 63-48303 88301 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 1/00-1/32

Claims (1)

(57) and Patent Claims 1 endoscope fixed shaft which is projected outside from the operation unit of a rotary cylindrical body that is rotatably fitted to the fixed shaft, the operating unit Outside , non-circular outer shape
An operating knob for rotating the rotary cylinder, a torque transmitting mechanism for connecting the operating knob and the rotary cylinder and transmitting the torque of the operating knob to the rotary cylinder; A brake mechanism connected to the operation knob to control the rotation of the operation knob, and provided at the insertion portion of the endoscope by rotating the operation knob to rotate the rotary cylinder. In an endoscope bending operation device that performs a bending operation of a bending portion, an outer shape of the operation knob is provided on a back surface of the operation knob.
Having an inner peripheral surface shape substantially the same as the shape, the brake mechanism,
The rotary force transmitting mechanism and the rotary cylinder are housed and covered.
Lightening recess and an inner peripheral surface of the lightening concave
To cover the lightening recess, and the outer shape of the operation knob.
A lower cover having substantially the same outer peripheral shape as the shape;
Interposed between the knob and the lower cover, the lower cover and
The operation knob and the lower cover have substantially the same external shape.
And a seal member for ensuring watertightness with the endoscope.