JPH097416A - Centering adjustment device for light source device for endoscope - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a centering adjustment device for a light source device for an endoscope, which is capable of accurately performing centering adjustment of a light source lamp by a simple operation, and further capable of downsizing the mechanism. To aim. [Structure] A lamp holder 10 for holding a light source lamp 5 is
At the fulcrum portion 25, the holder support 11 that supports the holder light source 11 so as to be movable and rotatable only in one direction perpendicular to the axis 6 of the light source lamp 5, and the fulcrum portion on a plane perpendicular to the axis 6 of the light source lamp 5. A pair of urging means 33, 34 for urging the lamp holder 10 in a direction parallel to the movable direction on both sides of the boss 25, and urging means 33, 3
4 and a pair of adjusting screws 35 and 36 which are provided in a pair and which receive the lamp holder 10 urged by the urging means 33 and 34 at the tip so as to resist the urging force and can adjust its receiving position. And.

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 center misalignment occurs in the horizontal direction, 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, with the above-mentioned mechanism, it is possible to make a delicate adjustment in the left-right direction by the screwing of the adjusting knob, but in the vertical adjustment, the fingertip holding the adjusting knob is used. Since it is performed by moving itself, it is difficult for fine adjustments unless you are an expert,
In some cases, accurate centering adjustment was not possible.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a centering adjusting device for an endoscope light source device, which can perform the centering adjustment of the light source lamp accurately by a simple operation and can reduce the size of the mechanism. And

[0008]

To achieve the above object, a centering adjustment device for an endoscope light source device according to the present invention includes a lamp holder for holding a light source lamp, and an axis line of the light source lamp at a fulcrum portion. A holder support which is movably and rotatably supported only in one direction perpendicular to the lamp, and the lamp on both sides of the fulcrum on a plane perpendicular to the axis of the light source lamp. A pair of urging means for urging the holder in a direction parallel to the movable direction, and the lamp holder urged by the urging means, which is provided in pair with the urging means, exerts its urging force. It is characterized in that a pair of adjusting screws are provided so as to be received by the tip so as to resist and the receiving position can be adjusted.

It should be noted that the fulcrum portion is provided with an elongated hole formed in one of the lamp holder and the holder supporting body perpendicularly to the axis of the light source lamp, and in the other so as to engage with the elongated hole. It may have a pin provided.

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.

[0011]

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

Reference numeral 5 is a light source lamp using a xenon lamp, with its axis 6 oriented parallel to the base 1.
It is arranged near the center of the space surrounded by the base 1, the front wall plate 2, the rear wall plate 3, and the top plate 4.

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

The illumination light reflected by the reflecting mirror 7 converges 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 arranged so as to be movable only along a groove 12 formed on the upper surface side of the base 1 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 when viewed from the side, and the lamp holder 10 for holding the light source lamp 5 is connected to the surface perpendicular to the axis 6. Further, an adjusting and fixing knob 13 which is screwed into the bottom surface of the holder support 11 from below is inserted into 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 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. Reference numeral 15 is a spring washer and a leaf spring.

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

A male screw projects rearward 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, whereby the male screw is tightened. The light source lamp 5 is 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 the lead wire 21 connected to the electrode on the tip side of the light source lamp 5 is connected to one power supply line connector 18.

The lead wire 23 connected to the lamp holder 10 by the fixing screw 22 is connected to the other power supply line connector 19. The rear wall plate 3 has a male screw 1
The window 20 is perforated so that 6 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 the holder support 1
1 is passed through an elongated hole 26 formed in the vertical surface.

As shown in FIG. 4, the long hole 26 has a width which is slightly loose relative to the diameter of the pin 25, and a length which is formed so as to be sufficiently spaced from the pin 25. ing. The head portion 25a of the pin 25, in which a groove for engaging the drivers is formed, is formed so as not to press the holder support body 11.

Therefore, in this portion (fulcrum portion), the lamp holder 10 can rotate with respect to the holder support 11 about the axis 24 of the pin 25, and the lamp holder 10 can be rotated vertically with respect to the axis 6 of the light source lamp 5. It can move in the direction (Y direction) but cannot move in the left and right direction (X direction).

On the extension line on the side of the pin 25 which is a straight line connecting the axis 6 of the light source lamp 5 and the center of the pin 25, a fixed grip is provided at a position approximately the same distance from the pin 25 to the axis 6 of the light source lamp 5. 28 is arranged and its fixed knob 28
A tightening screw portion 28 a at the tip of is attached to the lamp holder 10.

The proximal knob of the fixed knob 28 is formed thick and long and protrudes rearward from a window 30 formed in the lower portion of the rear wall plate 3, and the head of the knob of the fixed knob 28 is provided. , A groove for engaging the drivers is formed. Reference numeral 31 is a spring washer and a leaf spring.

The holder support 11 is provided with a round hole 29 through which the fixed knob 28 is inserted, and as shown in FIG. 4, the diameter of that portion of the fixed knob 28 and the inner diameter of the round hole 29. There is a sufficient gap between and.

Therefore, if the fixed knob 28 is loosened, the fixed knob 28 can be freely moved within the range of the round hole 29, and if the fixed knob 28 is tightened, the lamp holder 10 is held by the holder support 11. Fixed against.

A pair of tension coil springs 33 and 34 are provided between the side surface portions of the lamp holder 10 and the side surface portions of the holder support 11 located on both the left and right sides of the pin 25 (fulcrum portion). The end is hung over,
Both the coil springs 33 and 34 are attached to the lamp holder 10
Is urged downward.

Further, a pair of adjusting screws 35, 36 screwed in the Y direction with respect to the holder support 11 are provided on both the left and right sides of the pin 25 with the pin 25 interposed therebetween.
It is attached so as to pair with 3,34.

The adjusting screws 35 and 36 are both screwed upward from the bottom side to the holder support 11, and the tips of the adjusting screws 35 and 36 are in contact with the lamp holder 10, respectively. Energized lamp holder 1
0 is received by the tips of both adjusting screws 35 and 36 against the biasing force.

Therefore, with the driver, the left and right adjusting screws 3
By tightening or loosening 5, 36, the tip positions of the adjusting screws 35, 36 are slightly moved up and down, the lamp holder 10 is moved up and down (Y direction), and the axis 6 of the light source lamp 5 is centered in the Y direction. Adjustments are made.

By changing the moving amounts of the left and right adjusting screws 35 and 36, the displacements of the tip positions of the adjusting screws 35 and 36 are different between the left and the right, so that the lamp holder 10
Rotates about the pin 25 and tilts, and as a result, the axis 6 of the light source lamp 5 moves to the left and right to perform centering adjustment in the X direction.

In this way, after the centering adjustments in both the X and Y directions are made by the adjusting screws 35 and 36 which are finely moved in the axial direction in accordance with the rotating operation, and the fixed knob 28 is tightened from the rear, the lamp holder 10 is held. It is fixed to the support 11.

In this way, adjustment in all directions of X, Y and Z is performed by the adjustment fixing knob 13 and the adjustment screw 3 arranged in the same direction.
5 and 36, the centering adjustment can be easily performed after the light source device is assembled, and it is not necessary to repeatedly attach and detach the light source device when performing the adjustment.

When it is necessary to replace the light source lamp 5, by loosening a screw (not shown) that attaches the base 1 to the light source device, 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.

[0038]

According to the present invention, the lamp holder urged by the pair of urging means provided on both sides of the fulcrum is sandwiched by the tips of the pair of adjusting screws to adjust the receiving position. By doing so, centering adjustment in both XY directions can be performed with the adjusting screw that is finely moved in the axial direction by the rotating operation, so that the centering adjustment of the light source lamp can be accurately performed by a simple adjustment work, Moreover, the mechanism can be downsized.

[Brief description of drawings]

FIG. 1 is a rear view of the embodiment.

FIG. 2 is a perspective view of an example.

FIG. 3 is a side sectional view of an example.

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 (fulcrum part) 33, 34 Extension coil spring 35, 36 Adjustment screw

Claims (3)

[Claims] 1. A holder support for rotatably supporting a lamp holder for holding a light source lamp in only one direction perpendicular to the axis of the light source lamp at a fulcrum, and an axis of the light source lamp. A pair of urging means for urging the lamp holder in a direction parallel to the movable direction on both sides of the fulcrum portion sandwiched on a plane perpendicular to the pair of urging means. And a pair of adjusting screws for adjusting the receiving position of the lamp holder, which is urged by the urging means and which receives the lamp holder at its tip so as to resist the urging force. A centering adjustment device for a light source device for an endoscope. 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 adjustment device for a light source device for an endoscope according to claim 1, further comprising a pin provided. 3. The centering of the light source device for an endoscope according to claim 1, wherein 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. Adjustment device.