AUTOMATIC AND MANUAL ZOOM MECHANISM FOR SLIT LAMP-BASED DRY EYE INSPECTION INSTRUMENT

Abstract

An automatic and manual zooming mechanism based on ophthalmic slit lamp with dry eye inspection, characterized in that it comprises an optical body zoom drum seat, an optical body zoom drum, a zoom handwheel and an electric drive mechanism; The doubling drum is installed in the optical body zooming drum seat, and the two ends of the optical body zooming drum are respectively connected with zooming handwheels through connecting shafts; on the optical body zooming drum seat An electric drive mechanism is provided, and the electric drive mechanism is used to drive the optical body variable magnification drum to rotate. First, the structure is simple, and it is convenient to realize the automatic zoom function of the slit lamp of the Galileo optical system and the slit lamp type dry eye inspection instrument; second, the automatic zoom function of the slit lamp of the Galileo optical system is realized, while the manual zoom function is also retained. Third, it is convenient to realize the intelligent operation and remote operation of the entire slit lamp and the slit lamp type dry eye inspection instrument.

Claims

1. An automatic and manual zooming mechanism based on ophthalmic slit lamp with dry eye inspection instrument, characterized in that: it comprises an optical body zooming drum base, an optical body zooming drum, a zooming handwheel and an electric drive mechanism; the optical body variable magnification drum is installed in the optical body variable magnification drum seat, and two ends of the optical body variable magnification drum are respectively connected with variable magnification handwheels through connecting shafts; an electric drive mechanism is arranged on the optical body variable magnification drum base, and the electric drive mechanism is used to drive the optical body variable magnification drum to rotate to realize electric magnification.

2. An automatic and manual zooming mechanism based on ophthalmic slit lamp with dry eye inspection according to claim 1, wherein the electric drive mechanism can be a gear mechanism, a sheave mechanism, or a pulley mechanism.

3. An automatic and manual zooming mechanism based on ophthalmic slit lamp with dry eye inspection according to claim 1, wherein the electric drive mechanism is a motor that directly drives the optical body to rotate the magnification changing drum.

4. An automatic and manual zooming mechanism based on ophthalmic slit lamp with dry eye inspection according to claim 2, wherein: the electric drive mechanism includes a motor, a driving gear and a driven gear, the motor is mounted on the optical body variable magnification drum seat, the driving gear is mounted on the output end of the motor, and the driven gear is fixed. sleeved on the connecting shaft.

5. An automatic and manual zooming mechanism based on ophthalmic slit lamp with dry eye inspection according to claim 4, wherein the teeth on the driving gear are partial teeth, and the driving gear drives the driven gear through the partial teeth. Intermittent movement of gears; when the driving gear does not mesh with the driven gear, the driven gear and the connected optical body variable-magnification drum can rotate freely together.

Description

DESCRIPTION OF DRAWINGS

[0027] FIG. 1 is the main sectional view of the patent structure;

[0028] FIG. 2 is a sectional view of the patent structure AA ;

[0029] FIG. 3 is a sectional view of the patented structure BB ;

[0030] FIG. 4 is an exploded view of the patent structure;

[0031] FIG. 5 is a schematic diagram of the patent structure;

[0032] FIG. 6 is the logic block diagram of the patent;

[0033] FIG. 7 is a schematic diagram of the optical body of the slit lamp Galileo system;

[0034] The description of the drawings is marked as: slit lamp chin rest mechanism 1, slit lamp illumination mechanism 1, microscope optical body 3, slit lamp platform moving mechanism 4, slit lamp Galileo system optical body large objective lens 5, slit lamp Galileo system optical body variable Multiplier objective lens 6, slit lamp Galileo system optical body eyepiece 7, optical body left zooming handwheel 301, left blocking plate 302, left adjusting ring 303, optical body zoom drum seat 304, large object seat 305, optical body zoom Rotary drum 306, driven gear 307, right blocking plate 308, optical body right zooming hand wheel 309, driving gear end cover 310, driving gear 311, motor 312, right shrapnel retaining ring 313, point bearing 314, mandrel 315, Left shrapnel retaining ring 316, shrapnel 317.

DETAILED WAYS

[0035] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

[0036] FIG. 1 to FIG. 6 : an automatic and manual zoom mechanism based on a slit lamp type dry eye inspection instrument, including an optical body zoom drum base 304, an optical body zoom drum 306, and an optical body left zoom The handwheel 301, the right zooming handwheel 309 of the optical body, the right blocking piece 308 and the left blocking piece 302.

[0037] 306 is provided in the optical body variable magnification drum base 304, the left end of the optical body variable magnification drum 306 is provided with a left connecting shaft, and the right end of the optical body variable magnification drum 306 is provided with a right The connecting shaft, the left end of the left connecting shaft and the right end of the right connecting shaft respectively protrude from the corresponding side of the optical body variable magnification drum base 304, and the free end of the left connecting shaft is connected with an optical body left zooming handwheel 301, the free end of the left connecting shaft is connected with an optical body left zooming hand wheel 301, and the free end of the right connecting shaft is connected with an optical body right zooming handwheel 309, and a follower is respectively sleeved on the right connecting shaft The gear 307 and the right blocking piece 308, the right blocking piece 308 is located between the driven gear 307 and the right zooming handwheel 309 of the optical body;

[0038] on the optical body zooming drum base 304, a motor 312 is installed in the motor installation hole, and a driving gear 311 is connected to the output end of the motor 312, and the driving gear 311 has some teeth, In this embodiment, the driving gear 311 adopts seven teeth, and the driving gear 311 drives the driven gear to move intermittently.

[0039] driving gear 311 does not mesh with the driven gear 307, the driven gear 307 and the connected variable magnification drum 306 can rotate freely together.

[0040] At the bottom of the optical body variable magnification drum base 304 is a locking groove, and a locking mechanism is arranged in the locking groove. The locking mechanism includes a right elastic plate retaining ring 313, a point bearing 314, a mandrel 315, a left Shrapnel retaining ring 316 and shrapnel 317, the upper surface of the shrapnel 317 is provided with a mandrel 315 through the support seat, a point bearing 314 is sleeved in the middle of the mandrel 315, and the left end and the right end of the mandrel 315 are respectively provided with left shrapnel The retaining ring 316 and the right spring retaining ring 313. The point bearing 314 is used for clamping the optical body variable magnification drum 306. Grooves have been opened on the circumference of the optical body zoom drum 306. When the slot of the optical body zoom drum 306 rotates to the top of the point bearing 314, the elastic piece 317 drives the point bearing 314 to snap into the corresponding in the card slot.

[0041] The working principle of the present invention: part of the meshing teeth are removed from the driving gear (only some of the teeth are retained), when the driving gear rotates, only the remaining number of teeth participates in driving the driven gear to rotate, so when the driving gear rotates continuously, the driven gear rotates intermittently. sports.

[0042] When it is necessary to manually adjust the zoom drum of the optical body, the driving gear rotates to the non-mesh position, and the driven gear can rotate freely. The left zoom handwheel or the right zoom handwheel of the optical body drives the optical body zoom drum to rotate to the required position through the corresponding connecting shaft, and is locked into the slot on the zoom drum by the positioning bearing installed on the shrapnel achieve precise positioning.

[0043] When the optical body zoom drum needs to be adjusted automatically, the motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the optical body zoom drum to rotate through the right connecting shaft. When the position is changed, the displacement drum just rotates the positioning position to achieve the same precise positioning as manual operation.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of, are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

[0045] In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole, the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.