Unidirectional rotation system of microscope electric objective lens turntable

Abstract

The utility model provides a unidirectional rotating system of a microscope electric objective lens rotating disc, which comprises a gear motor, an output shaft of the gear motor is connected with a ratchet wheel, the ratchet wheel is in transmission connection with a pawl, the pawl is connected with a pinion, the pinion is in transmission connection with a large gear, and the large gear is connected with an objective lens disc. The system effectively solves the problem that when an existing electric microscope on the market is used for observing a microscopic sample, continuous objective lens switching of different multiples cannot be manually achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory instruments and equipment, in particular to a one-way rotation system of an electric objective turntable of a microscope. Background Art

[0002] The motorized turret of a microscope typically uses a reduction motor to drive a small gear, which in turn rotates a large gear on the objective disc, thereby enabling the change of objective lenses of different magnifications. This structure, when the objective disc is not powered or manually rotated, cannot be manually rotated due to the resistance of the reduction motor, thus achieving the purpose of manually switching objectives. Utility Model Content

[0003] In view of the above problems, the utility model provides a one-way rotation system of a motorized objective turret of a microscope, which effectively solves the problem that existing motorized microscopes on the market cannot manually switch between objective lenses of different magnifications when observing microscopic samples.

[0004] A one-way rotation system of a microscope electric objective turret includes a reduction motor, an output shaft of the reduction motor is connected to a ratchet, the ratchet is transmission-connected to a pawl, the pawl is connected to a small gear, the small gear is transmission-connected to a large gear, and the large gear is connected to the objective disk.

[0005] Preferably, there are multiple pawls, and the multiple pawls are evenly distributed along the circumference of the pinion with the axis of the pinion as the center.

[0006] Preferably, the pawl is mounted on the upper end surface of the pinion.

[0007] Preferably, the pinion is rotatably connected to the microscope housing.

[0008] Preferably, the pinion is coaxially sleeved on the outside of the ratchet.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] The reduction motor drives the ratchet mechanism with a small gear, which in turn drives the objective disc through the transmission of the ratchet pawl and the transmission between the two gears. Simultaneously, when manually rotating the objective disc, the pawl is driven by the small gear and slides along the ratchet due to the unidirectional drive of the ratchet, without being affected by the resistance of the reduction motor, allowing easy manual switching of the objective lens. This achieves both the function of motor-driven objective lens and the purpose of manual lens switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0012] Figure 2This is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0013] In the figure: 1. reduction motor, 2. ratchet, 3. small gear, 4. pawl, 5. large gear. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] See also Figure 1 - Figure 2 The utility model provides a one-way rotation system for a microscope electric objective turntable. The system replaces the direct meshing transmission of two gears in the gear transmission system in the prior art with an indirect transmission system connected by a ratchet 2 and a pawl 4. The one-way transmission characteristic of the ratchet is utilized to release the resistance of the reduction motor and realize continuous switching of the objective lens in manual mode.

[0016] The system includes a reduction motor 1, with a ratchet 2 coaxially connected to the output shaft of the reduction motor 1. A pinion 3 is coaxially mounted on the outside of the ratchet and rotatably connected to the microscope housing. Multiple pawls 4 are detachably screwed to the upper end of the pinion 3. These pawls 4 are evenly distributed around the pinion axis. Pinion 3 is drivingly connected to a large gear 5, which is connected to the objective lens disc.

[0017] The ratchet 2 located in the center is connected to the reduction motor 1. When the reduction motor 1 drives the ratchet 2 to rotate clockwise, the pawl slides along the edge of the ratchet teeth, and the ratchet 2 can rotate freely relative to the peripheral pinion.

[0018] When the reduction motor 1 drives the ratchet 2 to rotate counterclockwise, the ratchet teeth on the ratchet 2 are locked with the pawl 4, and the transmission action of the pawl drives the peripheral small gear 3 to rotate counterclockwise. Since the small gear 3 is engaged with the large gear 5, the large gear 5 and the objective lens disk are driven to rotate clockwise.

[0019] When the power is off, manually rotate the objective disk and the large gear 5 clockwise. Through meshing transmission, driven by the large gear 5, the small gear 3 rotates counterclockwise, the pawl 4 slides along the ratchet teeth on the surface of the ratchet wheel 2, and the small gear 3 rotates without resistance, so the objective disk can rotate normally.

[0020] Through the above three actions, the objective lens disk can be electrically driven to rotate clockwise and can also rotate normally when the objective lens disk is manually turned clockwise.

[0021] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A one-way rotation system for a microscope electric turret, characterized in that: The invention comprises a reduction motor (1), wherein the output shaft of the reduction motor is connected to a ratchet (2), the ratchet is connected to a pawl (4), the pawl is connected to a small gear (3), the small gear is connected to a large gear (5), and the large gear is connected to an objective lens disk.

2. The one-way rotation system of a microscope electric turret according to claim 1, characterized in that: There are a plurality of ratchets (4), and the plurality of ratchets are evenly distributed along the circumference of the pinion (3) with the axis of the pinion (3) as the center.

3. The one-way rotation system of a microscope electric turret according to claim 1, characterized in that: The pawl (4) is mounted on the upper end surface of the pinion (3).

4. The one-way rotation system of a microscope electric turret according to claim 1, characterized in that: The pinion (3) is rotatably connected to the microscope housing.

5. The one-way rotation system of a microscope electric turret according to claim 1, characterized in that: The pinion (3) is coaxially sleeved on the outside of the ratchet (2).

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