JPH10206719A - Zoom handle optional position click mechanism for variable power microscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a zoom handle optional position click mechanism for a variable power microscope capable of easily performing click operation to a required microscopic power position with good reproducibility, newly adding an optional power click operation mechanism to a used mirror body and being easily maintained. SOLUTION: In this zoom handle optional position click mechanism for a variable power microscope equipped with a zoom handle shaft 1 driving the optical member of a variable power optical system arranged between an objective optical system and an ocular optical system; a zoom handle 4 driving and rotating the zoom handle shaft 1 is attachably/detachably provided on the handle shaft 1, a single click groove member 5 arranged coaxially with the handle shaft 1 on the handle 4 and fixed at an optional axially rotating position and a click member 7 screwed to be fit in a crank holding member 8 fixed on a microscope main body 2 and moving to an engaging and disengaging position to/from the click groove 5a of the groove member 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a click mechanism for a zoom handle of a variable magnification microscope.

[0002]

2. Description of the Related Art Conventionally, a variable magnification (zoom) stereo microscope has a plurality of click grooves provided with a plurality of click grooves for each magnification set in advance by a manufacturer, fixed to a zoom handle shaft, and rotating the zoom handle. A click operation is performed at each magnification designated position, and the configuration is shown in FIGS. 8 and 9. FIG. 8 is a cross-sectional view showing the variable magnification stereo microscope partially omitted, and FIG. 9 is a cross-sectional view showing the click mechanism.

As shown in FIG. 8, a zoom handle shaft 32 for changing the magnification by moving a variable optical system 31 in the optical axis direction is rotatably held on the microscope main body 30. Both ends of the zoom handle shaft 32 are provided. Are projected from the side surfaces of the microscope main body 30, respectively. A zoom handle 33 is fixed to both ends of the zoom handle shaft 32 with screws 34a, and a plurality of click grooves 35 set at each magnification position.
A plurality of click groove members 35 provided with a are fixed with screws 34b and arranged inside the microscope main body 30. A leaf spring 36 for performing a click operation is fixed to the inner surface of the microscope main body 30, and a click ball 37 is fixed to the leaf spring 36 so as to face the click groove 35 a of the plurality of click groove members 35. The click ball 37 enters the click groove 35a for each magnification of the plurality of click groove members 35 with the pressing force of the leaf spring 36, and performs a click operation.
Is stopped and held, and the microscope can be continued at that magnification. Note that the click ball 37 may be a click protrusion that enters the click groove 35a.

At the time of microscopy during magnification, when a rotational force is applied in the direction in which the zoom handle 33 is to be zoomed, a plurality of click groove members 35 fixed to the zoom handle shaft 32 are provided.
The click ball 37 escapes from the click groove 35a, and the zoom handle 33 and the plurality of click groove members 35 start rotating. When rotated to the target magnification position, the click ball 37 enters the click groove 35a provided in the plurality of click groove members 35, performs a click operation, stops and holds the rotation of the zoom handle 33, and enables microscopy. I do. When the magnification is changed through a plurality of click grooves 35a, the lens is rotated to a target magnification position while performing a plurality of click operations.

Although not shown, in order to release all the click operations, a plurality of click groove members 35 and the click ball 37 or the click ball 37 are clicked so that the click ball 37 or the click protrusion does not enter the click groove 35a. An interval is provided in the projecting projection.

In the above configuration, since the setting of the magnification indicating position has already been set, the multiple click groove member 3 is set.
With 5, the designated magnification position cannot be changed to an arbitrary position.

When trying to change to an arbitrary magnification position,
As shown in Japanese Patent Application Laid-Open No. 1-257940 (see FIG. 10), a rotatable zoom lens barrel 40 is provided with a click convex portion 41. The guide ring hole 43 is provided on the peripheral surface of the holding ring 42 that does not rotate with respect to the variable magnification lens barrel 40. A movable plate 44 that can be fixed at a desired magnification position is provided in the guide slot 43 so as to be movable along the guide slot 43. Moving plate 4
A click recess 45 is provided on the lower surface of the zoom lens 4. The moving plate 44 is fixed at a predetermined magnification position, and the zoom lens barrel 40 is rotated so that the click protrusion 41 and the click recess 45 are formed. A click operation is performed to enable microscopy at a required magnification position.

[0008]

In some microscopes using a variable-magnification stereomicroscope, the examiner can select an arbitrary magnification at a magnification other than the preset magnification indication positions where the plurality of click groove members and the click balls are engaged. Therefore, it is required to be able to repeatedly perform reproducible microscopy and photography at a desired arbitrary magnification so that microscopy and photography can be performed.

In the conventional variable magnification stereo microscope shown in FIGS. 8 and 9, a click ball 37 and a click groove 3 are provided.
At magnifications other than the designated magnification position where 5a is locked, the rotation of the zoom handle must be stopped and held at portions other than the conventional click operation section at each designated magnification position. However, since there is no click groove 35a at positions other than the designated magnification position, the stop position of the zoom handle 33 is not stable, and the stop position is not always at the same magnification. It is not always possible to perform stable spectroscopy.

When the required microscopic magnification is repeatedly determined at a predetermined magnification, the multiple click groove member 35 already has a plurality of click grooves 35a for each magnification. Therefore, since there is a click operation other than the click operation of the required microscope magnification position, when the magnification is changed from the microscope magnification and the microscope is performed, it is attempted to reproduce the original initial microscope magnification again. It is difficult to determine which click operation is the click operation at the initial speculum magnification position, and it is necessary to remove the eye from the eyepiece at each time of the speculum and check the magnification, and the speculum operability is poor. Was.

Therefore, when the speculum is inspected without performing all the click operations, a state similar to the state other than the above-described click operation is obtained, and a speculum having repetitive reproducibility is not always stably obtained. Further, when the zoom handle 33 is fixed to perform a microscopic examination without using a click action at a required microscope magnification position, the click handle 33 at the time of zooming cannot be rotated, and the zoom function is lost. This degrades the performance of the zoom stereo microscope.

In Japanese Unexamined Patent Application Publication No. 1-257940, a click operation section of an arbitrary magnification is provided in a variable-magnification lens barrel.
The maintenance work also affects the variable power lens operating part, which may cause the optical axis of the variable power lens to shift, thereby increasing the number of maintenance steps such as readjustment of the optical axis. Also,
If an attempt is made to replace the click mechanism having a fixed click position with such an arbitrary magnification click mechanism, it is difficult to remove the click mechanism, which complicates the operation.

The present invention has been made in view of the above-mentioned problems of the prior art, and enables a click operation to be easily performed at a required speculum magnification position with good reproducibility. It is an object of the present invention to provide a zoom handle arbitrary position click mechanism of a variable magnification microscope which can be easily maintained by adding a magnification click operation mechanism.

[0014]

According to another aspect of the present invention, there is provided a zoom handle shaft for driving an optical member of a variable power optical system disposed between an objective optical system and an eyepiece optical system. A click mechanism of a zoom handle of a variable magnification microscope comprising: a zoom handle configured to rotationally drive the zoom handle axis; and a position-adjustable click mechanism capable of stopping the click of the zoom handle at any desired position. did.

According to a second aspect of the present invention, in the configuration of the first aspect, the click mechanism is provided so as to be detachable from the microscope main body.

According to a third aspect of the present invention, in the configuration of the first aspect, the click mechanism is rotatably disposed coaxially with the zoom handle shaft, and can be fixed at an arbitrary rotational position around this axis. A click groove member; and a locking member having a plunger means that can be selectively moved to a position engageable with or disengageable from the click groove of the click groove member.

The operation of the present invention will be described. When the zoom handle is rotated, the zoom handle is rotated and zoomed by clicking at each preset magnification position, but it is performed repeatedly at any magnification position. May be. In the invention of claim 1,
When repeatedly performing microscopy at this arbitrary microscope magnification position, the stop position of the zoom handle is arbitrarily set by the position-adjustable click mechanism.

According to the second aspect of the present invention, a click mechanism can be newly added to the microscope body already used, and the maintenance of the click portion is facilitated.

According to the third aspect of the present invention, when it is desired to click at a required arbitrary microscope magnification position, the locking groove having the plunger means is kept with the click groove member provided on the zoom handle fixed to the zoom handle. Lock the click handle to the click groove of the member and lock the zoom handle. Next, the zoom handle is made rotatable with respect to the click groove member, and the zoom handle is rotated to a desired microscope magnification position. Thereafter, the click groove member is fixed to the zoom handle, and the click groove member and the zoom handle are integrated. As a result, a desired initial microscope magnification is set. At this time, since the fixing force between the click groove member and the zoom handle is larger than the force for locking the click groove member and the locking member, when the zoom handle is rotated, the locking member comes off the click groove of the click groove member. When the zoom handle is returned to the initial microscope magnification position after zooming from the set initial microscope magnification position, the click groove member and the locking member click and operate at the set initial microscope magnification position. The magnification is reproduced.

When it is not necessary to set a click at an arbitrary microscope magnification position, the click groove member is made rotatable with respect to the zoom handle in a state where the click groove member and the locking member are locked. The click groove member is locked by the pressing force of the locking member and is fixed to the microscope body side,
The zoom handle and the click groove do not interact with each other. Therefore, a click operation at an arbitrary microscope magnification position has no effect.

Further, when the click groove member and the locking member are clicked to perform a microscopic examination at a desired microscope magnification position, and it is desired to temporarily release the click operation at the desired position, the click groove member is moved. While being fixed to the zoom handle, it moves to a position where engagement between the locking member and the click groove member is impossible. When the click operation is released in this manner, the click groove member and the zoom handle rotate together, so that the click groove member and the zoom handle that determine the desired microscope magnification position continue to maintain the adjusted positional relationship. Therefore, in this state, for example, if a click at a plurality of preset fixed magnification positions is activated,
The plurality of fixed magnification position clicks can be temporarily used. Then, when the microscope is again examined at the previous desired microscope magnification position, if the locking member is moved to a position where it can be locked with the click groove of the click groove member, the locking member is moved to the previous desired microscope magnification position. The click groove member performs a click operation, and the previous desired microscope magnification position can be reproduced.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment of the Invention] A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view showing a zoom handle arbitrary position click mechanism according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view showing a part of a variable magnification (zoom) microscope provided with a zoom handle arbitrary position click mechanism.

As shown in FIG. 2, the zoom handle shaft 1 for driving a plurality of same-magnification optical systems 16 in the optical axis direction to change the magnification is provided outside the optical axes of the plurality of same-magnification optical systems 16. And is held by the microscope body 2 so as to be able to rotate and slide. A zoom handle shaft 1 is provided through the microscope main body 2, and an arbitrary magnification position click zoom handle 3 having a zoom handle arbitrary position click mechanism of the first embodiment is attached to one end of the zoom handle shaft 1, and a rotary zoom is provided at the other end. A handle 17 is attached. Zoom handle axis 1
In the same manner as in the prior art, a click ball 19 attached to the microscope main body 2 via a leaf spring 18 and a plurality of click groove members 20 provided with a plurality of click grooves 20a for performing a click operation are fixed by screws 21. . The click operation by the click ball 19 and the click groove 20a can be released as described in the related art.

As shown in FIGS. 1 and 2, an arbitrary magnification position click zoom handle 3 provided with an arbitrary magnification position single click
Are a zoom handle 4, a single click groove member 5 at an arbitrary magnification position, a clamp knob 6, a click holding member 8 holding a click member 7, a position regulating member 9 of the click holding member 8 in the thrust direction, and a zoom. Spacer 10 between handle 4 and click holding member 8, position regulating member 11 in the thrust direction of single click groove member 5, spacer 1 between zoom handle 4 and single click groove member 5
2 and a screw 13 for fixing the zoom handle 4 to the zoom handle shaft 1.

The single click groove member 5 and the click holding member 8 are each formed in an annular shape. A single click groove 5a is provided on the outer peripheral surface of the single click groove member 5, and a click holding member 8 is disposed outside the outer peripheral surface of the single click groove member 5, and the single click groove member 5 and the click holding member 8 are provided. Is provided on the zoom handle 4 so as to be coaxial with the zoom handle shaft 1. The click holding member 8 is fixed to the microscope main body 2 with a screw 15 by a connecting member 14, and cannot be rotated together with the zoom handle 4. The click holding member 8 is provided with a screw hole toward the center. The single click groove member 5 is not fixed to either the zoom handle 4 or the click holding member 8, but is fitted to one or both of them to be rotatable and slidable. The single click groove member 5 may be fitted using a bearing such as a bearing, and may be slid and rotated.

The click member 7 is a plunger-type click, and a screw screwed into a screw hole of the click holding member 8 is provided on the outer periphery thereof. The click member 7 is provided with the click ball 7a and the click groove 5 of the single click groove member 5.
a of the click holding member 8 is screwed into the screw hole of the click holding member 8 so as not to follow the rotation of the zoom handle 4.
a and the case where the click operation is applied and the case where the click operation is released can be adjusted depending on the screwing amount of the click member 7. The clamp knob 6 is held by the zoom handle 4 and the zoom handle 4
The single click groove member 5 can be locked to the zoom handle 4 at any position in the rotation direction of the zoom handle 4 by screwing. The lock between the zoom handle 4 and the single click groove member 5 can be released by loosening the screw of the clamp knob 6, and it is possible to use each magnification previously set in the multiple click groove member 20.

Next, the operation of the click mechanism having the above configuration will be described. When the click at an arbitrary microscope magnification position is released, the click operation is performed by aligning the click groove 5a of the single click groove member 5 with the click member 7 held by the click holding member 8, and the single click groove member is operated. 5 is locked to the click holding member 8. In this state, the clamp knob 6 held on the zoom handle 4 fixed to the zoom handle shaft 1 with the screw 13 is loosened, and the zoom handle 4 is rotated. At this time, since the click member 7 is screwed to the click holding member 8 and does not rotate together with the zoom handle 4, the single click groove member 5 locked to the click member 7 does not rotate. Therefore, since the zoom handle 4 only slides and rotates at the fitting portion with the single click groove member 5 and does not perform the click operation with the single click groove member 5, the setting of the arbitrary microscope magnification position is released. it can.

When a click is set at an arbitrary microscope magnification, the clamp knob 6 is loosened and the single click groove member 5 is set.
The zoom handle 4 is rotated in a state where is locked to the click holding member 8 via the click member 7. At this time, the single click groove member 5 does not rotate depending on the zoom handle 4, the zoom handle shaft 1 rotates together with the zoom handle 4, and the microscope magnification changes. Then, rotate the zoom handle 4 to the required microscope magnification position and stop it.
At that position, the clamp knob 6 is fastened to the single click groove member 5. Accordingly, a click at an arbitrary desired microscope magnification can be set at a position where the click groove 5a of the single click groove member 5 and the click ball 7a of the click member 7 are locked. Since the pressing force of the clamp knob 6 against the single click groove member 5 is larger than the pressing force of the click member 7 against the single click groove member 5, when the zoom handle 4 is rotated, the click ball 7a of the click member 7 is clicked. The single click groove member 5 rotates integrally with the zoom handle 4 when the single click groove member 5 comes off the click groove 5a of the groove member 5. Thus, the magnification is changed from the initially set desired microscope magnification position. Then, when the zoom handle 4 is returned to the initial speculum magnification position again, the click is operated at the set initial desired speculum magnification position, and the initial speculum magnification is reproduced.
Therefore, a stable speculum having repetitive reproducibility at a required speculum magnification can be obtained.

Further, when the click at an arbitrary desired microscope magnification position is released without changing the arbitrarily set desired microscope magnification position, the single click groove member 5 is tightened by the clamp knob 6 and clicked. The plunger-type click member 7 screwed to the holding member 8 is loosened in a direction away from the single click groove member 5 and retracted to a position where the click operation between the click member 7 and the single click groove member 5 is released. When the zoom handle 4 is rotated in this state, the single click groove member 5 is still tightened to the clamp knob 6. Therefore, the single click groove member 5 moves the zoom handle with its click groove 5 a maintaining the positional relationship with the zoom handle 4. 4 and rotate together. Again, when it is desired to operate the click operation at the desired microscope magnification position,
By screwing the click member 7 into the single click groove member 5 until the click operation is performed, the desired initial microscope magnification position arbitrarily set can be reproduced again. That is, after the microscope is inspected at the desired microscope magnification position, the operation is returned to the click operation at each preset magnification by the plurality of click groove members 20 and the microscope is inspected again. Can be implemented with good reproducibility.

At this time, if the click operation with the single click groove member 5 cannot be released by loosing the click member 7, after the microscopic examination at an arbitrary set desired microscope magnification position by the click member 7 and the single click member 5, The speculum at the predetermined magnification ratio by the click ball 19 and the plurality of click groove members 20 cannot be re-examined with good reproducibility at the desired magnification ratio. That is, when the click operation of the single click groove member 5 and the click member 7 is made to act at an arbitrary desired microscope magnification position, the click operation at a predetermined position of each of the multiple click groove members 20 at each magnification is determined. In order to make it easy to determine whether the click operation is performed at the speculum magnification position, it is necessary to cancel the click operation at a predetermined position for each magnification. Then, after releasing the click operation at each preset magnification position and performing microscopy at the desired microscope magnification position, returning to the click operation at each preset magnification position again requires setting in advance. In order to distinguish between the click operation at the position for each magnification and the click operation at the desired microscope magnification position, the single click groove member 5 for performing the click operation at the desired microscope magnification position is provided with the zoom handle 4. In order not to rotate together, the clamp knob 6 tightening the single click groove member 5 must be loosened to release the click operation between the single click groove member 5 and the click member 7. When the zoom handle 4 is rotated in this state, the positional relationship between the click groove 5a of the click groove member 5 and the zoom handle 4 is broken, and the click operation is released at the desired microscope magnification position. Therefore, in order to inspect the microscope again at the previous desired microscope magnification position, the click operation position between the click groove 5a of the click groove member 5 and the zoom handle 4 must be adjusted again. The reproducibility of the magnification is deteriorated.

When a plurality of click groove members 20 and a single click groove member 5 are set for each preset magnification, and a click operation is performed at an arbitrary microscope magnification position, the click of the plurality of click groove members 20 is released. After that, a click operation at an arbitrary microscope magnification position may be performed by the above-described method. Further, when it is desired to apply only a plurality of click operations for each preset magnification, the click operation at an arbitrary microscope magnification position may be canceled by the above-described method. A single click zoom handle for a click operation only at an arbitrary microscope magnification position is also possible without setting the multiple click groove members 20 of the multiple click grooves 20a and the single click groove member 5 for each preset magnification. It is.

According to the zoom handle arbitrary magnification position click mechanism of the first embodiment of the present invention, the single click groove member 5, the click member 7, the clamp knob 6, the screw 13 and the like are provided on the zoom handle 4 so that the arbitrary magnification position can be achieved. Since the click zoom handle 3 is configured, the click zoom handle 3 can be easily attached to and detached from the zoom handle shaft 1. Therefore, when newly adding the arbitrary magnification position click operation mechanism to the used mirror, remove the zoom handle of the used mirror, then fit the arbitrary magnification position click zoom handle 3 into the zoom handle shaft 1, and use the screw 13 to adjust the zoom handle. Axis 1
And the zoom handle 4 are fixed, and the connecting member 14 can be fixed to the used mirror body. Since the arbitrary magnification position click operation mechanism is integrated with the zoom handle 4, it can be easily newly added to the used lens body, and the function can be improved. In the maintenance of the click mechanism, the click zoom handle 3 at the arbitrary magnification position is
Since it is easy to remove the zoom handle 3 from the zoom handle shaft 1 by loosening it, the maintenance is not affected by the zoom optical system, so that the maintenance is facilitated and the number of maintenance steps is reduced.

The click member 7 is screw-fitted to the click holding member 8 fixed to the microscope main body 2 by the connecting member 14 and the screw 15 so that the click operation with the single click groove member 5 and its release can be performed. Therefore, even if the zoom handle 4 is rotated while the single click groove member 5 is fixed to the zoom handle 4 by the clamp knob 6, the click member 7 does not rotate. Therefore, the click member 7 is set again by tightening the click member 7 again. A click operation can be performed at a desired microscope magnification position. For this reason, even when the speculum is performed by using both the click operation at the arbitrarily set desired speculum magnification position and the click operation with the preset plural click groove members 20, the previous desired Microscopic work can be performed with good reproducibility at the microscopic magnification.

Further, since the click member 7 is formed into a plunger type capable of being screwed into the click holding member 8, the screw amount of the click member 7 is limited within a range where the click member 7 and the click groove 5a of the single click groove member 5 perform the click operation. Can be adjusted, and the desired click acting force can be adjusted. Further, even when the amount of spring force of the click member 7 varies, the variation of the handle rotation amount, the amount of click operation, and the like can be eliminated by adjusting the amount of click acting force, thereby stabilizing product quality. be able to.

[Second Embodiment] A second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a sectional view showing a zoom handle arbitrary position clicking mechanism according to Embodiment 2 of the present invention.

The second embodiment of the present invention is characterized in that the click holding member 8 of the first embodiment is integrated with the microscope main body 2. A cylindrical portion 2 is provided on the side of the microscope body 2.
a is formed, and the click groove 5a provided on the outer peripheral surface of the single click groove member 5 is disposed so as to face the inner peripheral surface of the cylindrical portion 2a. In addition, the cylindrical portion 2a of the microscope main body 2 includes:
As in the first embodiment, a click member 7 which can be clicked while being locked in a click groove 5a provided on the outer peripheral surface of the single click groove member 5 is screwed so as to be able to advance and retreat. Other configurations are the same as those of the first embodiment.

In the second embodiment of the present invention, the same operation as in the first embodiment can be obtained.

According to the second embodiment of the present invention, since the click holding member is integrated with the microscope main body 3, the connecting member 14, the screw 15, and the spacer 10 according to the first embodiment are used.
Can be omitted, the number of components is reduced, and the cost can be reduced.

Third Embodiment of the Invention A third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a sectional view showing a zoom handle arbitrary position clicking mechanism according to Embodiment 3 of the present invention.

In the third embodiment of the present invention, the clamp knob 6 is held by the click holding member 8 and the click member 7 is screw-fitted to the zoom handle 4. The position where the clamp knob 6 and the click member 7 are provided is different. It is configured by replacement. Other configurations are the same as those of the first embodiment.

In the third embodiment of the present invention, click settings, operations, and effects are the same as those in the first embodiment.

Fourth Embodiment A fourth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a sectional view showing a zoom handle arbitrary position clicking mechanism according to Embodiment 4 of the present invention.

The fourth embodiment of the present invention is directed to a click zoom handle 3 having an arbitrary magnification position configured similarly to the first embodiment.
Are provided in plurality. An arbitrary magnification position click zoom handle 3a on the side of the microscope main body 2 penetrates through the zoom handle shaft 1 and is fixed to the zoom handle shaft 1 with a screw 13a, and the other arbitrary magnification position click zoom handle 3b is an end of the zoom handle shaft 1. The part is fixed by a screw 13b. The zoom handles 4a and 4b of the click zoom handles 3a and 3b at arbitrary magnification positions are connected to the microscope body 2 via screws 15a and 15b via the connecting member 14.
The single click groove members 5a and 5b provided on the zoom handles 4a and 4b allow a click operation to be performed at any two magnification magnification positions such as a low magnification side and a high magnification side. . Other configurations are the same as those of the first embodiment.

According to the fourth embodiment of the present invention, click settings, operations, and effects are the same as those in the first embodiment.

Fifth Embodiment A fifth embodiment of the present invention will be described with reference to FIG. FIG. 6 is a sectional view showing a zoom handle arbitrary position click mechanism according to Embodiment 5 of the present invention.

In the fifth embodiment of the present invention, the single click groove member 5 is slidably fitted to the zoom handle 1 shaft so as to be coaxial with the zoom handle shaft 1. Other configurations are the same as those of the first embodiment.

According to the fifth embodiment of the present invention, click settings, operations, and effects are the same as those in the first embodiment.

Sixth Embodiment A sixth embodiment of the present invention will be described with reference to FIG. FIG. 7 is a sectional view showing a zoom handle arbitrary position clicking mechanism according to Embodiment 6 of the present invention.

In the sixth embodiment of the present invention, a plurality of zoom handles 3a and 3b are provided, and each of the zoom handles 3a and 3b is provided.
The single click groove members 5a and 5b provided on the a and 3b are slidably fitted to the zoom handle 1 shaft similarly to the fifth embodiment, and are coaxial with the zoom handle shaft 1. Other configurations are the same as those of the fourth embodiment.

According to the sixth embodiment of the present invention, click settings, operations, and effects are the same as in the first embodiment.

In the first to sixth embodiments of the present invention, the click member 7 is not limited to the plunger type, and a leaf spring or the like can be applied, and the same operation and effect as those of the first embodiment can be obtained. be able to.

The above specification includes the invention having the following configuration. (1) In a click mechanism of a zoom handle of a variable magnification microscope provided with a zoom handle axis for driving an optical member of a variable power optical system disposed between an objective optical system and an eyepiece optical system, an axis around the zoom handle axis is provided. A single click groove member provided on the outer periphery of a single click groove rotatably provided and click-fixable at an arbitrary magnification position, and a click holding member fixed to the microscope main body and arranged on the outer periphery of the single click groove member And a click mechanism at an arbitrary position of the zoom handle of the variable magnification microscope, wherein a click member arranged on the click holding member and adjustable to a position locked or unlocked with the click groove is provided.

(2) The zoom handle of the variable magnification microscope according to the above configuration (1), wherein the single click groove member, the click holding member, and the click member are provided on a zoom handle detachable from a zoom handle shaft. Arbitrary position click mechanism.

(3) The zoom handle arbitrary position click mechanism of the variable magnification microscope according to the above configuration (2), wherein the single click groove member can be fixed by a clamp knob provided on the zoom handle.

(4) In a click mechanism of a zoom handle of a variable magnification microscope having a zoom handle axis for driving an optical member of a variable power optical system disposed between an objective optical system and an eyepiece optical system, the zoom handle axis And a position-adjustable click mechanism capable of stopping the click of the zoom handle at any desired position. The click mechanism is detachable from the microscope main body together with the zoom handle. A click mechanism at any position of the zoom handle of the variable magnification microscope.

[0056]

As described above, according to the zoom handle arbitrary position click mechanism of the variable magnification microscope of the present invention, the microscope at any desired microscope magnification position and the inspection for each predetermined magnification can be performed. There is a mirror. Further, the speculum at any desired speculum magnification and the speculum for each preset magnification can be alternated, and at that time, the previous desired speculum magnification position can be reproduced. Therefore, a speculum suitable for a target speculum can be performed.

A zoom handle provided with a click mechanism that can set an arbitrary desired microscope magnification position can be easily newly added to the used mirror body, and the function of the microscope can be improved. Furthermore, since it is easy to remove the zoom handle from the microscope main body, maintenance is facilitated, and there is an advantage that the number of maintenance steps is reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing Embodiment 1 of the present invention.

FIG. 2 is a cross-sectional view showing a part of a variable magnification (zoom) microscope including a zoom handle arbitrary position click mechanism according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing Embodiment 2 of the present invention.

FIG. 4 is a sectional view showing a third embodiment of the present invention.

FIG. 5 is a sectional view showing a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing a fifth embodiment of the present invention.

FIG. 7 is a sectional view showing Embodiment 6 of the present invention.

FIG. 8 is a cross-sectional view partially showing a conventional stereo microscope.

FIG. 9 is a cross-sectional view showing a conventional click mechanism.

FIG. 10 is a perspective view showing a conventional zoom mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Zoom handle axis 2 Microscope main body 3 Magnification position click zoom handle 4 Zoom handle 5 Single click groove member 5a Click groove 6 Clamp knob 7 Click member 8 Click holding member 16 Same magnification optical system

Claims (3)

[Claims] In a click mechanism of a zoom handle of a variable magnification microscope having a zoom handle axis for driving an optical member of a variable power optical system disposed between an objective optical system and an eyepiece optical system, the zoom handle axis is A zoom handle arbitrary position click mechanism of a variable magnification microscope, comprising: a zoom handle that is driven to rotate; and a position adjusting click mechanism that can click and stop the zoom handle at a desired arbitrary position. 2. The mechanism according to claim 1, wherein said click mechanism is detachably mounted on a microscope main body. 3. The click mechanism according to claim 1, wherein said click mechanism is rotatably disposed coaxially with said zoom handle shaft, and is capable of being fixed to an arbitrary rotational position about said axis. And a locking member having a plunger means that can be selectively moved to either the engageable or non-engageable position. .