JP2555016Y2 - Vertical movement device for focusing in magnifying observation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a focusing vertical movement device of a magnifying observation device.

[Conventional technology]

A conventional device of this type, for example, a projector has a structure as shown in FIG.

In FIG. 4, a linear guide of a linear ball bearing guide (53) is fixed to the main body (51). The projection head (52) has a linear ball bearing guide (5
The ball bearing of 3) is fixedly mounted, and is movable vertically with respect to the main body (51) via the linear ball bearing guide (53). Object lens holding member (5
2) The lead screw (5
4) is implanted in the direction of movement of the projection head (52), and a threaded nut (55) is screwed into the threaded part. The geared nut (55) is fixed to the main body so that it can rotate only ing. The gear fixed to the geared nut (55) meshes with the gear fixed to the rotating shaft of the motor (56).

When the motor (56) is driven in the above configuration, the geared nut (55) rotates and the lead screw (54) moves up and down. Therefore, as the lead screw (54) moves up and down, the holding member (52) of the objective lens moves up and down along the linear ball bearing guide (53).

A projection lens (57) is attached to the objective lens holding member (52), and focuses on an object (59) mounted on a stage (58) by moving the projection head (52) up and down.

As described above, in the conventional technology, the projection head (5
A member for vertically moving 2) for focusing was arranged on the front inside the apparatus main body.

[Problems to be solved by the invention]

However, in the prior art, a guide (linear ball bearing guide) for vertically moving a projection head (or a stage) and a driving device for vertically driving a projection head (or a stage) for focusing are independently mounted on the main body of the magnifying observation apparatus. It had been. Therefore, in order to maintain the consistency of the components attached to the main body, it is necessary to individually adjust the components after they are attached to predetermined positions, and there is a problem that workability is poor.

Also, the components are concentrated on the front part which is relatively easy to attach to the main body, and holes and notches must be provided in the front part of the main body for the arrangement and attachment of the members. There was also a problem that the rigidity was deteriorated.

Further, there is a disadvantage that a component for covering a hole, a notch or the like is required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an in-focus vertical movement device capable of obtaining a magnifying observation device having high rigidity, easy assembly adjustment, and reduced number of parts.

[Means for solving the problem]

For the above purpose, a vertical movement device for focusing in a magnifying observation apparatus is provided by a vertical movement table (3) for holding one of a holding member (13) for an objective lens and a holding member for a mounting table.
And a driving device (4, 5, 6, 7) for vertically moving the vertically moving table (3) for focusing, and the driving device is mounted, and the driving device is disposed in the magnifying observation device. And a substrate (1) attached to the magnifying observation apparatus main body so as to be provided.

[Action]

In the present invention, the members constituting the up-down movement device are arranged on the substrate, so that the up-down movement device can be attached to the main body after partially assembling, so that the assembling becomes easy and the substrate is removed. Since it is mounted from the back side of the main body, the inconvenience that the constituent members gather on the front surface of the main body is eliminated.

Further, as described above, since the vertical movement device is mounted from the back side of the main body by the substrate, holes and notches provided on the front surface of the main body as in the related art are not required. Therefore, in addition to eliminating the necessity of a component covering the substrate, the rigidity of the main body is increased because the substrate is fixed from the back side of the main body.

〔Example〕

FIG. 1 shows an embodiment of the present invention.
5) Linear guide rails (2) of linear ball bearing guides (2, 2 ') (hereinafter referred to as linear guides) are fixed on the substrate (1) fixed from the back side of the substrate (1) on the left and right of the upper part of the substrate (1). The bearings (2 ') of the linear guides (2, 2') are fixedly mounted at the lower portion and one at the center, and are fixed at positions opposed to the rails (2) of the vertically movable table (3). The vertically moving table (3) is movable with respect to the substrate (1).

Two bearings (5, 6) for supporting a lead screw (4), which is a drive mechanism of a vertically moving table (3), are fixedly mounted on the substrate (1), and a lead having a bevel gear (8) provided at one end. A screw (4) is supported.

A nut (7) is screwed into the lead screw (4),
The nut (7) is fixed to the vertically movable table (3).

The bevel gear (8 ') provided on the joint supported by the bearing (6) meshes with the bevel gear (8) provided on the lead screw (4). The joint (11) has one end of the handle shaft (10) pushed in from the front side of the main body (15) and a pin (11 ').
The handle (9) is fixedly mounted on the other end of the handle shaft (10).

The operation of the projector configured as described above will be described below.

By rotating the handle (9), the bevel gear (8 '),
By the engagement of (8), the rotation is transmitted to the lead screw (4). The nut (7) screwed by the rotation of the lead screw (4) moves up and down along the lead screw (4). Vertical table (3) fixing nut (7)
Moves up and down along the linear guide rail (2) in the same manner as the movement of the nut (7). Therefore, the holding member (13) of the objective lens moves up and down to perform focusing.

In the embodiment of the present invention, three linear guides are used as vertical guides, but the guide mechanism is not limited to this if it is used in consideration of rigidity. Further, another type of guide mechanism, for example, a dovetail guide, a cross roller guide, or the like may be used. Although the nut (7) is moved in the drive mechanism, the lead screw may be moved. Further, the manual operation using the handle (9) has been described for driving the up-and-down moving device. However, the present invention is not limited to this, and may be electrically operated. In addition, although the vertical movement device moves the holding member of the objective lens up and down, the holding member of the mounting table may be moved up and down.

FIG. 2 is a perspective view of the focusing device of the present invention.
A vertically moving table (3) is mounted on the substrate (1) via linear guides (2, 2 ') so as to be vertically movable.
A nut (7) fixed to a vertically movable table (3) is screwed to a rotatable lead screw which is rotatably supported by bearings (5) and (6) fixed to the substrate (1). . A bevel gear (not shown) is provided at an end of the lead screw (4) on the bearing (6) side, and meshes with a bevel gear fixed to a joint (11) supported by the bearing (6).

After attaching the focusing up / down movement device integrally formed on the substrate as described above from the back side of the apparatus main body (15), the holding member of the objective lens (not shown) is attached to the up / down movement table (3).

FIG. 3 is an exploded perspective view of the projector provided with the focusing up-down movement device of the present invention.

A vertically movable table (3) movably provided on the substrate (1) is disposed inside the main body (15) by attaching the substrate (1) from the back side of the main body (15), and the objective lens holding member (13) is provided on the table surface. Was installed.

[Effect of the invention]

According to the above-described embodiment, a vertically moving device is constructed on a substrate, and the substrate is attached to the main body of the device having a U-shaped cross section so as to be one side of the U-shape. The cross section is a square shape and the vertical moving parts are arranged inside, so assembly and adjustment can be done easily, the shape is compact, the number of parts is small, and the cost is low,
This has the effect of increasing the rigidity of the main body. In general, in an apparatus such as a projector, an epi-illumination device is built in the front side of a main body. In the present invention, the substrate on which the vertical
It is arranged so that its cross-section becomes the backside of the body with a square shape, so even if the front of the body thermally expands due to the heat of the epi-illumination light source, there is little effect on the up-and-down moving parts. An advantage of the present invention is that measurement errors due to optical axis misalignment that are likely to occur are less likely to occur in the present invention.

Therefore, according to the present invention, it is possible to obtain a focusing vertical moving device in a magnifying observation device having high rigidity, easy assembly adjustment, and reduced number of parts.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the device according to the present invention, FIG. 2 is a perspective view showing a focusing vertical moving device according to the present invention, and FIG. FIG. 4 is an exploded perspective view showing a state where the holding member of the objective lens is mounted on the table, and FIG. 4 is a longitudinal sectional view of a projector equipped with a conventional vertical movement device. [Description of Signs of Main Parts] 1... Substrate 2... Linear guide race 2 ′... Bearing 3... Vertical movement table 4. Lead screw 5 6 Bearing 7. 8 'bevel gear

Claims (1)

(57) [Scope of request for utility model registration] 1. A magnifying observation apparatus main body having a vertically movable table for holding one of a holding member for an objective lens and a holding member for a stage, and a column having a U-shaped cross-section such that an opening is located on a rear surface. And a substrate attached to the opening of the column of the magnifying observation apparatus main body from the rear surface to form a column with a square cross section, and a guide that makes the vertically moving table movable.
A drive device for vertically moving the vertical movement table, wherein the substrate holds the vertical movement table, the guide, and the drive device, and the vertical movement table, the guide, and the drive device are inside the main body. The substrate is attached to the opening of the column of the magnifying observation apparatus main body from the rear surface so as to be housed, and the substrate is formed into a column having a square cross section.
A vertical movement device for focusing in a magnifying observation device.