JP3920419B2 - Simplified endoscope device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a simple endoscope apparatus in which a light source unit for supplying illumination light to a light guide is attached to an operation unit.
[0002]
[Prior art]
In a so-called simple endoscope apparatus in which a light emitter for illumination is provided in an operation unit, a light source unit including a light source lamp and a dry battery serving as a power source for the light source lamp is attached to the operation unit.
[0003]
In such a light source unit, the battery housing chamber for housing the battery is generally formed in a cylindrical shape, and the battery can be taken in and out in the axial direction by removing the lid that is screwed to the end portion. Yes.
[0004]
[Problems to be solved by the invention]
However, in the conventional structure as described above, it is necessary to remove the lid from the light source unit when inserting and removing the battery. Therefore, the lid is dropped on the floor or the like during that time, or the lid is lost as it is. May end up.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a simple endoscope apparatus that does not drop or lose a battery housing cover when a power supply battery is inserted or removed.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the simplified endoscope apparatus of the present invention has an incident end portion of a light guide for transmitting illumination light for illuminating a subject disposed in an operation unit, and illumination light to the light guide. In a simple endoscope apparatus in which a light source unit including a light source lamp for supplying a power source and a power source battery thereof is attached to the operation unit, the battery is inserted into and removed from a battery storage chamber for storing the battery. An openable / closable lid for opening is provided so as not to be detached from the light source unit.
[0007]
The light source unit may be detachable from the operation unit.
Further, the lid body is formed in a cylindrical shape surrounding the battery housing chamber, and the battery housed inside the lid body can be taken out laterally by sliding the lid body in the axial direction. May be.
[0008]
And it is good to provide the stopper for restrict | sliding the slide of the said cover body further in the state which can take out the said battery to the side.
Further, the lid may be fixed to the light source unit in a closed state by screwing a mouth portion with a threaded portion of the light source unit. In the state where the lid is closed, the light source unit It may be configured in a watertight structure in which moisture does not enter from the outside.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 5 is a side view of the operation portion 2 portion of the endoscope, and FIG. 6 is a rear view. The base end of the insertion portion 1 covered with a flexible tube is connected to the lower end portion of the operation portion 2. Yes.
[0010]
About 3/4 of the lower side of the operation part 2 is a grip part 2a, and a forceps insertion port part 4 is provided to project obliquely forward between the grip part 2a and the insertion part 1. . Reference numeral 3 denotes a pressure adjusting valve for adjusting the pressure inside the endoscope configured to be airtight.
[0011]
The operation mechanism 5 above the grip 2a of the operation unit 2 includes a suction operation valve 6 for performing a suction operation through a forceps channel (not shown) inserted into the insertion unit 1, and a distal end of the insertion unit 1. A bending operation lever 7 for remotely bending a bending portion (not shown) formed in the portion is disposed on the front surface and the rear surface, and an eyepiece portion 8 projects from the upper surface.
[0012]
An illumination light guide fiber bundle 9 for transmitting illumination light for illuminating a subject has an incident end disposed in the operation mechanism unit 5 and passes through the insertion unit 1 and the grip unit 2a of the operation unit 2. The injection end is arranged at the tip of the insertion portion 1.
[0013]
A light source unit 30 for supplying illumination light to the light guide fiber bundle 9 is detachably attached in a state of protruding sideways from the side surface portion of the operation mechanism unit 5.
[0014]
As shown in FIG. 6, the light source unit 30 includes a light source lamp 32 that emits illumination light to be supplied to the light guide fiber bundle 9, a battery 100 that is a power source for lighting the light source lamp 32, and the like. Built in.
[0015]
As the battery 100, any battery such as a dry battery or a rechargeable nickel cadmium battery may be used. Reference numeral 45 denotes a switch ring for performing a switching operation between turning on and off the light source lamp 32.
[0016]
4 is a side view of the light source unit 30, and FIG. 3 is a side sectional view. The light source unit 30 is formed in a straight cylindrical shape as a whole, includes a light source lamp 32 and a lamp chamber portion 30a located near the connection portion with the operation portion 2, and an intermediate portion that houses the battery 100. And a battery accommodating chamber 30b located from the protruding end to the protruding end.
[0017]
Reference numeral 33 denotes a cylindrical outer cylindrical body that forms the battery accommodating chamber 30b, and is formed of, for example, stainless steel, metal or plastic subjected to chemical-resistant surface treatment having good corrosion resistance (chemical resistance), or the like. The front side portion of the outer cylinder 33 supports the base of the lamp chamber 30 a, and the outer cylinder 33 also serves as a frame for the entire light source unit 30.
[0018]
Inside the outer cylinder 33, a cylindrical inner cylinder 34 made of, for example, copper or a copper alloy such as phosphor bronze having good conductivity is inscribed and fixed by a small screw 35. The screw portion is sealed with an adhesive.
[0019]
The inner cylindrical body 34 is formed to have an inner diameter dimension into which the battery 100 is inserted, and on the rear end side (the side opposite to the lamp chamber 30a), the inner cylinder 34 abuts on the negative electrode end surface of the battery 100 so That is, a contact spring 37 that is biased toward the lamp chamber 30a side is fixed by a small screw 38. As a result, the inner cylinder 34 is electrically connected to the negative electrode of the battery 100 through the contact spring 37.
[0020]
A blind cover 39 is fitted into the rear end portion of the outer cylindrical body 33 and is screwed and fixed at the screw portion 40 so as not to loosen. An O-ring 41 for sealing is attached to the fitting surface between the blind cover 39 and the outer cylindrical body 33.
[0021]
On the side wall portion of the outer cylinder 33, a battery passage window 43 for taking in and out the battery 100 to the side is greatly cut out. The inner cylinder 34 is formed in a shape that does not interfere with the battery passage window 43.
[0022]
The battery passage window 43 is formed to be slightly shorter than the length of the battery 100, but the negative electrode side end surface of the battery 100 is notched to a position slightly behind the portion that contacts the contact spring 37. The battery passage window 43 can be made to pass through by making it diagonal.
[0023]
The battery accommodating chamber 30b is entirely surrounded by a cylindrical outer case 21 (lid) disposed outside the outer cylindrical body 33, and the battery passage window 43 is also completely surrounded by the outer case 21. It is blocked.
[0024]
The outer case 21 is provided so as to be slidable in the axial direction along the outer periphery of the outer cylindrical body 33 and to be rotatable about the axial line with respect to the outer cylindrical body 33. A female screw 22 is formed near the mouth of the outer side of the outer case 21 (on the lamp chamber 30a side), and is screwed into a male screw 23 formed on the outer peripheral surface of the outer cylindrical body 33 so as to be loosened and tightened. is doing.
[0025]
Therefore, normally, as shown in FIG. 3, the outer case 21 is fixed in a state of surrounding the battery accommodating chamber 30b by screwing both the screws 22 and 23, and the outer case at both front and rear ends thereof. 21 and the outer cylindrical body 33 are watertightly sealed by O-rings 26 and 27 for sealing.
[0026]
Then, by unscrewing both screws 22 and 23, the outer case 21 can be slid rearward and the battery 100 can be taken in and out from the battery passage window 43. Reference numeral 24 denotes a grip ring 24 for applying a hand when sliding the exterior case 21, and is fixed to the outer cylindrical body 33 with a small screw 25.
[0027]
The stopper ring 28 fixed to the inner peripheral surface of the outer case 21 by the machine screw 25 is a terminal end of the outer cylinder 33 when the outer case 21 is slid rearward and the battery 100 can be taken in and out of the battery passage window 43. It abuts on a stopper portion 29 protruding in a stepped manner on the portion. Therefore, even if the outer case 21 is slid to the maximum extent, it does not come off from the battery accommodating chamber 30b.
[0028]
In the present embodiment, both the stopper ring 28 and the stopper portion 29 are formed in an annular shape, but if at least one is formed on the entire circumference, the other is provided on at least a part of the circumference. Good.
[0029]
The switch ring 45 is rotatably fitted on the outer periphery of the outer cylindrical body 33 of the battery accommodating chamber 30b, and a pair of pins 46 and 47 screwed into the switch ring 45 and bonded and sealed to the outer cylindrical body 33. It penetrates the long grooves 48 and 49 formed in the circumferential direction and further reaches the inside thereof. The rotation range of the switch ring 45 is limited to a range in which the pins 46 and 47 can rotate within the long grooves 48 and 49.
[0030]
In the rotation range of the first pin 46, a conductive plate spring 51 that is fixed in contact with the inner cylinder 34 is disposed, and a conductive plate 52 that conducts to one electrode of the light source lamp 32 and the conductive plate spring 51. The contact relationship between the first pin 46 and the first pin 46 changes.
[0031]
Then, when the switch ring 45 is rotated and the first pin 46 is rotated, the conductive leaf spring 51 is pushed by the first pin 46 to come in contact with the conductive plate 52 and the light source lamp 32 is turned on and off. The state is switched.
[0032]
The click plate spring 53 is fixed to the inner cylinder 34 in the rotation range of the second pin 47, and the second pin 47 has both ends of the rotation range by the spring force of the click plate spring 53. Elastically fixed in position.
[0033]
As a result, by rotating the switch ring 45, the switch ring 45 is elastically click-fixed at both ends of the rotation range and is stationary. At one end position, the light source lamp 32 is lit and the other end is turned on. In this section, the light source lamp 32 is turned off.
[0034]
As shown in FIG. 4, the outer cylinder 33 and the surface of the switch ring 45 are marked with an indicator for indicating whether the light source lamp 32 is turned on / off with respect to the rotation position of the switch ring 45.
[0035]
Returning to FIG. 3, the conductive plate spring 51 and the click plate spring 53 are both fixed to the electrically insulating fixing block 54 with screws. A pair of sealing rings 55 and 56 are attached to the front and rear of the fitting surface between the outer cylindrical body 33 and the switch ring 45 to seal the long grooves 48 and 49 from the outside.
[0036]
The lamp chamber 30a is configured as one unit, and the cylindrical lamp chamber case 59 constituting the outer wall is formed of, for example, stainless steel having strength, and an electric insulating member 60 is screwed to the base thereof. The conductive board 52 is screwed onto the electrical insulating member 60.
[0037]
A socket 62 for connecting the light source lamp 32 is fixed to the conductive plate 52, and a terminal into which the first electrode 63 of the light source lamp 32 is inserted is fixed so as to contact the conductive plate 52. The terminal into which the second electrode 64 is inserted is conductively fixed to the conductive member 66 that contacts the anode side electrode of the battery 100. In this way, the second electrode 64 of the light source lamp 32 is always in conduction with the anode side electrode of the battery 100. Reference numeral 68 denotes an electrically insulating spacer.
[0038]
A reflecting mirror 71 for converging the illumination light emitted from the light source lamp 32 toward the incident end face of the light guide fiber bundle 9 is provided at the tip portion of the lamp chamber case 59 (on the side opposite to the battery housing chamber 30b). The light emitting lamp 32 is joined and fixed so as to surround the light emitting part at the front end.
[0039]
A transparent cover glass 72 is fixed to the front end surface of the reflecting mirror 71 by a presser nut 73. A sealant is applied to the outer peripheral surface of the cover glass 72 and is sealed so that water does not enter the lamp chamber case 59 from the outside.
[0040]
On the outer peripheral surface of the front end of the lamp chamber case 59, a male screw 74 is formed which is screwed with a female screw (not shown) formed on the inner peripheral surface of the unit receiving base 10 provided on the operation unit 2 side. The light source unit 30 is connected to the operation unit 2 by screwing the screws.
[0041]
Then, the illumination light emitted from the light source lamp 32 is reflected by the reflecting mirror 71, passes through the cover glass 72, and converges and enters the incident end face of the light guide fiber bundle 9.
[0042]
Then, the light source unit 30 is removed from the operation unit 2 by unscrewing the male screw 74 at the tip of the lamp chamber case 59 and the operation unit 2 side. Reference numeral 75 denotes an O-ring for sealing a fitting portion between the lamp chamber case 59 and the unit receiving base 10 when the light source unit 30 is connected to the operation unit 2.
[0043]
A fixed ring 77 for connecting and fixing the lamp chamber 30 a to the battery storage chamber 30 b is rotatably fitted on the outer periphery of the lamp chamber case 59, and is formed on the outer periphery of the rear end of the fixed ring 77. The lamp chamber 30a and the battery housing chamber 30b are connected and fixed by screwing the male screw 78 and the female screw 79 formed on the inner periphery of the front end portion of the outer cylindrical body 33.
[0044]
At this time, the rotation between the lamp chamber case 59 and the outer cylinder 33 is restricted by the rotation restricting pin 81 projecting from the lamp chamber case 59 engaging with the groove 82 formed in the outer cylinder 33. Has been.
[0045]
Further, a fixed ring 83 fixed to the lamp chamber case 59 by the rotation restricting pin 81 is fitted on the outer periphery of the lamp chamber case 59 and is sandwiched between the fixed ring 77 and the outer cylindrical body 33, so that the lamp chamber case is fixed. 59 and the outer cylinder 33 are fixed in the axial direction. Reference numeral 85 denotes an O-ring for sealing a connecting portion between the lamp chamber case 59 and the outer cylinder 33.
[0046]
The light source unit 30 of the embodiment configured as described above has a completely watertight structure in which moisture does not enter the inside from the outside when the outer case 21 is closed.
[0047]
When the battery 100 has reached the end of its life, first, the outer case 21 is rotated to release the screwing between the female screw 22 at the mouth and the male screw 23 on the outer periphery of the outer cylindrical body 33, and FIG. As shown in FIG. 2, the outer case 21 is slid rearward.
[0048]
Then, since the battery passage window 43 opens greatly in the side surface portion of the battery accommodating chamber 30b, the battery 100 accommodated therein is taken out from the side, and instead, a new battery 100 is inserted from the anode side into the battery passage window. 43 can be set in the battery accommodating chamber 30b.
[0049]
At this time, even if the outer case 21 is slid to the maximum, the stopper ring 28 cannot slide beyond the position where it comes into contact with the stopper portion 29, so that the outer case 21 is detached from the light source unit 30 during the battery replacement operation. There is nothing. After battery replacement, the outer case 21 can be slid in the closing direction to return to the original closed state shown in FIGS.
[0050]
【The invention's effect】
According to the present invention, the openable and closable lid that is opened when the battery is taken in and out of the battery housing chamber is provided so as not to be detached from the light source unit, so that the lid may be dropped or lost when the battery is taken in and out. Maintenance and management can be performed easily.
[Brief description of the drawings]
FIG. 1 is a side cross-sectional view of a light source unit according to an embodiment of the present invention in an open state.
FIG. 2 is a side view of the light source unit in an opened state according to the embodiment of the present invention.
FIG. 3 is a side sectional view of the light source unit according to the embodiment of the present invention in a closed state.
FIG. 4 is a side view of the light source unit according to the embodiment of the present invention in a closed state.
FIG. 5 is a side view of the simplified endoscope apparatus according to the embodiment of the present invention.
FIG. 6 is a rear view of the simplified endoscope apparatus according to the embodiment of the present invention.
[Explanation of symbols]
2 Operation unit 9 Light guide fiber bundle 21 Exterior case (lid)
28 Stopper Ring 29 Stopper 30 Light Source Unit 32 Light Source Lamp 43 Battery Passing Window 100 Battery

Claims (3)

An incident end of a light guide for transmitting illumination light for illuminating a subject is disposed in the operation unit, and a light source unit including a light source lamp for supplying illumination light to the light guide and its power supply battery is provided above. In a simple endoscope device attached to the operation unit,
An outer case formed in a cylindrical shape surrounding a cylindrical battery housing chamber having a battery passage window on the side wall is provided so as to be slidable in the axial direction along the outer periphery of the battery housing chamber and rotatable about the axis. The outer case is fixed to the light source unit in a state where the battery passage window is closed by screwing a front end portion of the outer case to a screw portion formed in the light source unit. The battery is configured to be in a state where the battery can be taken out and put in and out of the battery passage window by sliding the exterior case rearward in the axial direction, and in the state where the battery can be taken in and out from the battery passage window. A pair of stoppers that contact each other so as to restrict further rearward sliding of the outer case, the inner peripheral surface of the outer case and the battery Provided on the outer peripheral surface of the vessel chamber, at least one of the pair of stoppers formed annularly over the entire circumference, simplified endoscope which the outer casing is characterized in that so as not to leave from the light source unit Mirror device. The simple endoscope apparatus according to claim 1, wherein the light source unit is detachable from the operation unit. 3. The simplified endoscope apparatus according to claim 1 , wherein the endoscope apparatus is configured in a watertight structure in which moisture does not enter the light source unit from the outside when the outer case is closed.

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