JPH087634A - Centering adjusting device of light source device for endoscope - Google Patents

Abstract

PURPOSE:To adjust centering of a light source lamp in simple work by a small mechanism by arranging a specific centering adjusting part to move and fix a lamp holder. CONSTITUTION:This centering adjusting device is provided with a lamp holder 10 arranged vertically to the axis 6 of a light source lamp 5 by holding the light source lamp 5, fulcrum parts 25 and 26 to engage the lamp holder 10 with a holder support body 11 in a position separate from the light source lamp 5 so as to be freely movable only in the vertical one direction and freely rotatable to the axis 6 of the light source lamp 5 and a centering adjusting part (a second adjusting fixing knob 28 and a round hole 29) which can move and fix the lamp holder 10 to the holder support body 11 in a position separate from these fulcrum parts 25 and 26. Centering in the Y direction (the vertical direction) and the X direction (the lateral direction) can be simultaneously adjusted by this knob 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centering adjustment device for an endoscope light source device for supplying illumination light to an illumination light guide for an endoscope.

[0002]

2. Description of the Related Art Generally, the area of the incident end face of a light guide is very small. Therefore, in order to converge the illumination light emitted from the light source lamp to an accurate position, when the light source lamp is installed in the light source device, a core is required. It is necessary to make adjustments.

In order to perform such centering adjustment, previously, the light source lamp was separately adjusted in the vertical direction (Y direction) and the horizontal direction (X direction) perpendicular to the axial direction (Z direction) of the light source lamp. There were two adjustment screws for this purpose.

However, in that case, when the vertical adjustment is performed, a horizontal misalignment occurs, and the horizontal adjustment must be redone, and when the horizontal adjustment is performed, a vertical misalignment occurs again. Therefore, the adjustment work was not easy.

Therefore, conventionally, for example, the actual fair 1-3881.
As shown in No. 4, the lamp holder for holding the light source lamp is urged by, for example, a spring in the left-right direction, and the tightening amount of the adjusting knob that is screwed against the urging force is adjusted to adjust the left-right direction. The centering adjustment is performed, and the whole adjustment knob is moved up and down to perform the centering adjustment in the up and down direction, so that the centering adjustment can be performed in all directions in the vertical and horizontal directions with one adjustment knob.

[0006]

However, when the biasing spring is provided as described above, the adjusting mechanism becomes large in size, and at the same time, the mechanism for adjusting the tightening / decreasing amount of the adjusting knob is left as it is. If left unchecked, the adjustment knob may loosen due to vibration, etc., causing misalignment.

Therefore, in order to fix the adjustment state so that the misalignment after the adjustment does not occur, a separate fixing screw for tightening after the adjustment must be provided, which complicates the mechanism and assembles the work. Will be troublesome twice.

Therefore, an object of the present invention is to provide a centering adjustment device for a light source device for an endoscope, which is capable of performing centering adjustment of a light source lamp with a small mechanism and a simple operation.

[0009]

To achieve the above object, a centering adjusting device for an endoscope light source device of the present invention holds a light source lamp and is arranged perpendicularly to an axis of the light source lamp. And a fulcrum portion that engages the holder with the holder support at a position distant from the light source lamp so that the lamp holder is movable and rotatable only in one direction perpendicular to the axis of the light source lamp. A centering adjustment part is provided at a position apart from the fulcrum part so that the lamp holder can be moved and fixed with respect to the holder support.

The fulcrum portion is projected perpendicularly to the axis of the light source lamp to a long hole formed in one of the lamp holder and the holder support and the other so as to engage with the long hole. It may be formed by a pin provided and may be arranged at a position between the light source lamp and the centering adjustment part.

Further, the centering adjusting section has a tightening screw for fixing the lamp holder and the holder support, and the head of the tightening screw adjusts the centering of the light source lamp. It may be a picking part that is moved to do so.

Further, it is preferable that the holder support is adjustable in position in a direction parallel to the axis of the light source lamp with respect to the immovable member of the light source device.

[0013]

Embodiments will be described with reference to the drawings. 2 is a perspective view of an embodiment of the present invention, FIG. 1 is a side sectional view, and FIG. 3 is a rear view.

In the figure, reference numeral 1 denotes a base fixedly screwed and fixed to a housing of a light source device (not shown),
The front wall plate 2 and the rear wall plate 3 are erected parallel to the base 1 and fixed, and the top plate 4 is provided on the upper end sides of the front wall plate 2 and the rear wall plate 3.
Are fixed parallel to the base 1.

Reference numeral 5 denotes a light source lamp using a xenon lamp, which has an axis line 6 parallel to the base 1 and is surrounded by the base 1, the front wall plate 2, the rear wall plate 3, and the top plate 4. It is located near the center.

The reflecting mirror 7 is arranged so as to surround the light emitting portion 8 of the light source lamp 5 inside, and its front end opening is joined and fixed to a front hole 9 portion which is largely formed in the front wall plate 2. ing.

The illumination light reflected by the reflecting mirror 7 is designed to converge on the incident end face of the illumination light guide of the endoscope (not shown), but its accurate alignment (centering adjustment) is possible. As will be described later, this is performed by slightly moving the light source lamp 5.

Numeral 11 is movably arranged along a groove 12 formed on the upper surface side of the base 1 only in a direction (Z direction) parallel to the axis 6 of the light source lamp 5 (hereinafter, simply referred to as "axis 6"). It is a holder support which is made.

The holder support 11 is formed in an L-shape, and the lamp holder 10 for holding the light source lamp 5 is connected to the surface perpendicular to the axis 6. Further, a first adjusting and fixing knob 13 which is screwed into the bottom surface of the holder support body 11 from below is passed through a hole 14 formed in the base 1 with a sufficient gap.

Therefore, by moving the holder support 11 along the groove 12 with the adjusting and fixing knob 13 loosened, the light source lamp 5 can be moved in the direction of the axis 6 to perform the centering adjustment in the Z direction. it can. Then, the holder support 11 is fixed to the base 1 by tightening the adjustment fixing knob 13 as it is. 15 is a washer.

In the lamp holder 10, a flat surface portion 10a which is perpendicular to the axis 6 and is connected to a vertical surface of the holder support 11 and a cylindrical portion 10b which holds one electrode of the light source lamp 5 are made of a conductive material. It is integrally formed.

A male screw 16 is projected from the electrode of the light source lamp 5 fitted in the tubular portion 10b of the lamp holder 10, and a nut 17 is tightened from the outside to the male screw 16, whereby the light source lamp 5 is attached. Are fixed to the lamp holder 10.

Feed line connector 1 for connecting a feed line
8 and 19 are provided on the top plate 4, and a lead wire 21 connected to an electrode on the tip side of the light source lamp 5 is connected to one power supply line connector 18.

A lead wire 23 connected to the lamp holder 10 by a fixing screw 22 is connected to the other power supply line connector 19. The rear wall plate 3 has a male screw 16
The window 20 is bored so that the fixing screw 22 and the fixing screw 22 are exposed to the rear.

The pin 25 screwed and fixed to the flat surface portion 10a of the lamp holder 10 in a direction parallel to the axis 6 at a position apart from the axis 6 is perpendicular to the axis 6 and is perpendicular to the holder support 1.
1 is passed through an elongated hole 26 formed in the vertical surface.

The long hole 26 has a width that is slightly loose relative to the diameter of the pin 25, and the length thereof is formed so as to have a sufficient gap with respect to the pin 25. Head 25a of the pin 25 in which a groove for engaging the drivers is formed
Are formed so as not to press the holder support 11.

Therefore, at this portion (fulcrum portion), the lamp holder 10 can rotate about the pin 25 with respect to the holder support 11, and can move in the vertical direction (Y direction) perpendicular to the axis 6. However, it cannot move in the left-right direction (X direction).

On the extension line on the pin 25 side of the straight line connecting the axis 6 and the center of the pin 25, a second adjusting and fixing knob 28 is arranged at a position substantially the same as the distance from the pin 25 to the axis 6. The tightening screw portion 28 a at the tip of the second adjusting and fixing knob 28 is screwed into the holder support 11.

The knob portion 28b of the second adjusting and fixing knob 28 is thick and long, and protrudes rearward from an adjusting window 30 formed in the lower portion of the rear wall plate 3. A groove for engaging a driver or the like is formed in the head portion of the knob portion 28b of the second adjustment fixed knob 28.

The holder support 11 is provided with a round hole 29 for allowing the second adjusting and fixing knob 28 to pass therethrough, and as shown in FIG. 4, the diameter of that portion of the second adjusting and fixing knob 28. A sufficient gap is provided between the inner diameter of the round hole 29 and the inner diameter of the round hole 29.

Therefore, if the second adjusting / fixing knob 28 is loosened, the second adjusting / fixing knob 28 can be freely moved within the range of the round hole 29. At that time, as shown in FIGS. 2 and 4, if the second adjusting and fixing knob 28 is moved in the vertical direction (Y direction), the lamp holder 10 is moved in the vertical direction and the light source lamp 5 is moved in the same direction. It is possible to perform the centering adjustment in the Y direction by moving the same distance to.

The second adjusting and fixing knob 28 is rotatable in the circumferential direction (R direction) about the pin 25 of the fulcrum portion, and the R direction is substantially the same as the left and right direction (X direction). is there. Then, the light source lamp 5 is
Since it moves the same distance in the opposite direction as the adjustment fixed knob 28, the centering adjustment in the X direction can be performed.

As described above, the second adjusting and fixing knob 28 can simultaneously perform the centering adjustment in the Y direction and the X direction, and the second adjusting and fixing knob 28 can combine the Y direction and the X direction in a combined direction (oblique direction). Since the light source lamp 5 can be freely moved in any direction, the centering adjustment of the light source lamp 5 can be performed very easily.

After the centering adjustment in both the X and Y directions as described above, the second adjusting and fixing knob 28 is tightened from the outside, so that the holder support 11 is sandwiched between the lamp holder 10 and the washer 31. Then, the lamp holder 10 is fixed to the holder support 11.

When it is necessary to replace the light source lamp 5, the screw (not shown) for attaching the base 1 to the light source device is loosened so that the entire device shown in FIG. The light source lamp 5 may be detached as a unit, and the light source lamp 5 may be attached to and detached from the unit itself.

The present invention is not limited to the above-mentioned embodiment. For example, contrary to the above-mentioned embodiment, the long hole 26 is bored in the lamp holder 10 and the pin 25 is attached to the holder support 1.
It may be attached to 1. Also, the axis 6, the pin 25, and the second
It does not necessarily have to be arranged in line with the adjusting and fixing knob 28.

[0037]

According to the present invention, by adjusting the position of the centering adjustment portion, the centering adjustment of the light source lamp can be easily performed in all directions perpendicular to the axis of the light source lamp, and Since the adjusted state can be fixed as it is by the centering adjustment unit, the work is very easy and the adjusted state does not get out of order. Further, it is not necessary to provide a spring or the like, and the structure can be made compact with a simple mechanism.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment.

FIG. 2 is a perspective view of an example.

FIG. 3 is a rear view of the embodiment.

FIG. 4 is a rear cross-sectional view of the base of the embodiment.

[Explanation of symbols]

 5 Light source lamp 6 Axis 10 Lamp holder 11 Holder support 25 Pins 26 Long hole 28 Adjustment fixing knob 29 Round hole

Claims (4)

[Claims] 1. A lamp holder which holds a light source lamp and is arranged perpendicularly to an axis of the light source lamp, and the lamp holder is movable only in one direction perpendicular to the axis of the light source lamp. A fulcrum part that is rotatably engaged with the holder support at a position distant from the light source lamp, and a centering adjustment part that can move and fix the lamp holder with respect to the holder support at a position distant from the fulcrum part. And a centering adjustment device for an endoscope light source device. 2. The fulcrum portion has a long hole formed perpendicularly to the axis of the light source lamp in one of the lamp holder and the holder support, and protrudes in the other so as to engage with the long hole. The centering adjusting device for an endoscope light source device according to claim 1, further comprising a pin provided, the pin being arranged at a position between the light source lamp and the centering adjusting unit. 3. The centering adjustment section has a tightening screw for fixing the lamp holder and the holder support, and the head of the tightening screw adjusts the centering of the light source lamp. The centering adjustment device of the light source device for an endoscope according to claim 1 or 2, which is a knob that is moved to move. 4. The light source device for an endoscope according to claim 1, wherein the holder support is adjustable in position in a direction parallel to an axis of the light source lamp with respect to a stationary member of the light source device. Centering adjustment device.