JPS5842963Y2 - Centering device for ring aperture in turret condenser for phase contrast microscope - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a centering device for a ring aperture in a turret condenser for a phase contrast microscope.

In a phase contrast microscope, it is necessary to align the ring diaphragm in the condenser with the phase plate of the objective lens, but the ring diaphragm must also be replaced for each objective lens with a different magnification.

Therefore, the turret disc to which a plurality of ring apertures are attached is rotatably supported around a concentric shaft, and an eccentric shaft integral with the shaft is mounted on the stationary body frame that holds the turret disc. The member substantially integral with the shaft and the turret disc are each formed with two grooves, and the stationary body frame is provided with two rotary operation knobs, one of which is rotatably supported. A centering device for a ring aperture, in which a knock ball or the like attached to the inner end surface of the knob is fitted into one groove on the turret disc, and a pin attached to the inner end surface of the other knob is fitted into the other groove. Publication of utility model application 1986-786
It is disclosed in Publication No. 6.

However, with this type of structure, if there is any play between the groove and the pin or dowel ball, that play will cause inconvenience in positioning with slight movement, so the shape of the groove must be carefully selected. Machining must be performed with high precision, and conventional equipment requiring two grooves had the disadvantage of being extremely time-consuming.

The purpose of the present invention is to provide a centering device for a ring aperture that reduces processing effort.

The following will explain the embodiments shown in the drawings.

Fig. 1 is a partial sectional view of this embodiment, Fig. 2 is a bottom view of the turret and its support shaft in Fig. 1, and Fig. 3 is a centering dial 1.
3, FIG. 4 is a sectional view of the centering dial 17 taken in the direction of arrow B in FIG. 2, and FIG. 5 is a sectional view of the center axis 1A taken in the direction of arrow C in FIG. 2. It is a diagram.

The upper plate 1 to which the container cover 21 is attached is connected to the lower plate 4 by means of a central axis 1A and screws 1B that are integrated with the upper plate 1.
is fixed integrally with.

The upper plate 1 serves as a cover for the turret 2, and the lower plate 4 has an integral dovetail (not shown) for attachment to the microscope body.

As shown in FIG. 2, the central axis 1A has an eccentric ring 9 having a center 01 at a position different from the center 02 of the central axis 1A.
are cylindrically fitted, so that the eccentric ring 9 is aligned with the central axis 1.
It can freely rotate around A.

A corrugated washer 10 is provided between the upper plate 1 and the eccentric ring 9.

The eccentric ring 9 has a pin 20.

The turret 2 has a ring diaphragm 3 corresponding to each magnification of an objective lens (not shown) and a bright field aperture diaphragm 30 arranged on a concentric circle of an eccentric ring 9, and is cylindrically fitted to the eccentric ring 9 so as to be rotatable. There is.

Two centering dials 13 , 17 are provided on the lower plate 4 in mutually perpendicular directions relative to the center of the eccentric ring 9 .

As shown in FIG. 3, the centering dial 13 has a screw 13b.
The amount of rotation of the mounting member 4 to the device is limited to a predetermined amount.

A corrugated washer 16 is inserted between the centering dial 13 and the lower plate 4.

The click ball 14 is eccentric to the centering radius 13 and pushed upward by a click spring 15.

This click ball 14 is fitted into a groove 11A provided in a radial direction in a drop plate 11 integrated with the turret 2.

This groove 11A is provided corresponding to each ring aperture.

In this example, the turret 2 and the falling plate 11 are provided, but the turret 2 is provided with the groove 11A.

Further, as shown in FIG. 4, the centering dial 17 has a part of the attachment member 4 to the device sandwiched between its shoulder and the rotary plate 18.

The weight of rotation of the centering dial 17 is adjusted by tightening the screw 17A.

A pin 19A is provided on the rotating plate 18 at an eccentric position.

This pin 19A and a pin 20 provided on the eccentric tongue 9 are connected by a link 19 having a hole into which the pins 19A and 20 fit, respectively.

Further, as shown in FIG. 1, the bright field aperture diaphragm 30 has aperture diaphragm blades 6 and a rotating pin 5A.

The arrow wheel rotation ring 7 has a groove (not shown) into which the rotation pin 5A is fitted, and the rotation pin 5A is fitted into this groove (not shown).

Therefore, opening and closing of the aperture diaphragm blades 6 can be adjusted by rotating the aperture diaphragm opening/closing knob 12 provided integrally with the arrow wheel rotation ring 7.

Next, the operation will be explained.

First, the turret 2 is rotated to insert a suitable ring diaphragm into the optical path.

Next, when the centering dial 13 is rotated in the Y-Y' force direction shown in FIG. The turret 2, which is integral with the turret 2, is rotated in the circumferential direction.

Therefore, the ring diaphragm moves in the Yz Y't' direction.

On the other hand, when the centering dial 17 is rotated in the x-x' force direction,
Rotating plate 1 attached as one unit to centering dial 17
8 and the pin 19A provided on the rotary plate 18 rotate,
Further, the eccentric ring 9 is engaged with the pin 19A and the other end is engaged with the pin 19A.
The eccentric ring 9 is rotated around the axis 02 of the central axis 1A by the non-clip 19 that engages with the pin 20 provided in the
Rotate in the -X1' direction.

Due to the rotation of the eccentric ring 9, the falling plate 11 into which the click ball 14 has fallen and the turret 2, which is integrated therewith, have only the degree of freedom of rotation in the direction of the groove 11A and around the click ball 14. From the ring aperture
2 Move in the X2' direction.

The corrugated washers 10 and 16 are provided to prevent the center from shifting due to rotation of the turret after centering.

According to the present invention described above, the conventional relationship between pins and grooves can be replaced with the relationship between pins and pin holes, so only one groove is needed for the turret centering mechanism, thus reducing processing effort. can be done.

[Brief explanation of drawings]

Fig. 1 is a partial sectional view of one embodiment of the present invention, and Fig. 2 is a partial cross-sectional view of an embodiment of the present invention.
3 is a sectional view of the centering dial 13 taken in the direction of the A arrow in FIG. 2; FIG. 4 is a sectional view of the centering dial 17 taken in the direction of the B arrow in FIG. 2. , 5th
The figure is a cross-sectional view taken along arrow C in FIG. 2 of the central axis 1A. Explanation of symbols of main parts 1...Top plate, 2...
...Turret, 3...Ring aperture, 4...
...Lower plate, 9...Eccentric ring, 11...
...Drop plate, 11A...Groove, 13...
...Centering dial, 14...Click ball, 15...Click, 17...
Centering dial, 19...Link, 20...
···pin.

Claims (1)

[Scope of utility model registration request] The upper plate 1 and the lower plate 4 are integrally connected by a central axis 1A, and an eccentric tongue 9 is provided which is cylindrically fitted to the central axis 1A and rotates, and which is cylindrically fitted to the eccentric ring 9. A rotating turret 2 is provided, the turret 2 is provided with a ring aperture 3 arranged concentrically with the eccentric ring 9, and a radial groove 11A corresponding to the ring aperture 3, and the lower plate 4 is provided with two grooves. A centering dial 13, 17 is provided, and a click ball that fits into the groove 11A is arranged on one side 13 of the centering dial at a position eccentric from the center of rotation,
A device for centering a ring diaphragm in a turret condenser for a phase contrast microscope, characterized in that the other half 17 of the centering dial and the eccentric ring 9 are each connected by a link 19 with both ends pivotally supported.