CN210154688U

CN210154688U - Micro-displacement device of incident slit

Info

Publication number: CN210154688U
Application number: CN201921425386.5U
Authority: CN
Inventors: 张弛
Original assignee: Guiyang Lites Instrument Co Ltd
Current assignee: Guiyang Lites Instrument Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-03-17
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a micro-displacement device of an incident slit, which comprises a stepping motor, an eccentric wheel, a bracket, a slit carrier and elastic sheets, wherein the eccentric wheel is sleeved on an output shaft of the stepping motor, the bracket is in a plate shape and is vertically arranged along the front and back directions, the stepping motor is arranged along the left and right directions, the eccentric wheel is arranged in front of the bracket, a transmission sheet is obliquely arranged on the middle part of the front side of the bracket leftwards, the transmission sheet is in parallel contact with the eccentric wheel, the bracket is obliquely provided with a through hole, the through hole has the same inclination angle with the transmission sheet, the slit carrier is arranged in the through hole, the slit carrier is a hollow cylinder with one open end and one closed end, the axis of the through hole is parallel to the axis of the hollow cylinder, the closed end of the slit carrier is positioned at the left end, the incident slit is vertically arranged on the bracket, the lower end is fixed on the operating platform; the device has simple structure, simple circuit and simple control.

Description

Micro-displacement device of incident slit

Technical Field

The utility model relates to a spectrum appearance, in particular to little displacement device of incident slit.

Background

Spectrometers are also known as spectrometers and are widely known as direct-reading spectrometers. And a device for measuring the intensities of different wavelength positions of spectral lines by using light detectors such as a photomultiplier tube. It consists of an entrance slit, a dispersion system, an imaging system and one or more exit slits. The electromagnetic radiation from the radiation source is separated by a dispersive element into the desired wavelength or wavelength region and intensity measurements are taken at selected wavelengths (or scanned over a band of wavelengths). The method is divided into a monochromator and a polychromator.

In the prior art, the displacement of the entrance slit of the spectrometer is realized by directly driving the slit to move by a spindle of a stepping motor, and a detection feedback circuit needs to be designed when a circuit is designed by the method so as to control the maximum displacement distance of the stepping motor. The method has the advantages of complex circuit, complex structure and complex control.

Disclosure of Invention

In view of the above, the present invention provides a micro-displacement device with an incident slit, which has a simple structure, a simple circuit and a simple control.

The utility model aims at realizing through the following technical scheme:

the micro-displacement device of the incident slit comprises a stepping motor, an eccentric wheel, a support, a slit carrier and a spring plate, wherein the eccentric wheel is sleeved on an output shaft of the stepping motor, the support is plate-shaped and is vertically arranged along the front and back directions, the stepping motor is arranged along the left and right directions, the eccentric wheel is arranged in front of the support, a transmission piece is obliquely arranged on the middle part of the front side of the support leftwards, the transmission piece and the eccentric wheel are arranged in parallel in a contact manner, a through hole is obliquely arranged on the support, the inclination angle of the through hole is consistent with that of the transmission piece, the slit carrier is arranged in the through hole, the slit carrier is a hollow cylinder with one open end and one closed end, the axis of the through hole is parallel to that of the hollow cylinder, the closed end of the slit carrier is positioned at the left end, the incident slit, the two elastic sheets are vertically arranged, the upper ends of the two elastic sheets are respectively connected with the two connecting parts, and the lower ends of the two elastic sheets are fixed on the operating platform.

Further, a plate-shaped base is horizontally arranged below the support, the lower ends of the two elastic pieces are fixed on the base, the base is fixed on the operating table, and a gap is reserved between the bottom surface of the support and the base.

Furthermore, two mounting grooves are formed in the upper surface of the slit carrier along the length direction of the slit carrier, and two screws capable of respectively extending into the two mounting grooves are vertically arranged on the top surface of the support.

Further, the angle of inclination of the slit carrier on the holder was 54.5 °.

Still further, step motor main aspects lower part is equipped with the cushion, the device still includes the motor cabinet, the motor cabinet is the L type, is equipped with the hole that can supply step motor tip to pass on its vertical portion, and the horizontal part bottom surface is parallel and level with the cushion bottom surface, and the horizontal part is fixed on the operation panel.

The utility model has the advantages that:

the utility model discloses a little displacement device of incident slit drives the eccentric wheel through the step motor output shaft and rotates, and the driving plate is established on the support, and the support is fixed at the operation panel through the shell fragment, when the eccentric wheel rotated different angles, made the driving plate take place different displacements, and then made the support remove in the front and back direction, made the incident slit at last and remove in the front and back direction, the eccentric wheel can promote the driving plate, and the shell fragment can pull back the driving plate.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a perspective view of the slit carrier of fig. 1.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.

As shown in fig. 1-3, the micro-displacement device of the incident slit comprises a stepping motor 1, an eccentric wheel 2, a bracket 3, a slit carrier 4 and a spring plate 5, wherein the eccentric wheel 2 is sleeved on an output shaft of the stepping motor 1, the bracket 3 is a plate-shaped and vertically arranged along the front and back directions, the stepping motor 1 is arranged along the left and right directions, the eccentric wheel 2 is arranged in front of the bracket 3, a driving plate 6 is obliquely arranged on the middle part of the front side of the bracket 3 to the left, the driving plate 6 is arranged in parallel contact with the eccentric wheel 2, a through hole is obliquely arranged on the bracket 3 and is consistent with the oblique angle of the driving plate 6, the slit carrier 4 is arranged in the through hole, the slit carrier 4 is a hollow cylinder with an opening at one end and a closed at the other end, the axis of the through hole is parallel to the axis of the hollow cylinder, the closed end of the slit, the two elastic sheets 5 are vertically arranged, the upper ends of the two elastic sheets are respectively connected with the two connecting parts, and the lower ends of the two elastic sheets are fixed on the operating table or the workbench.

The device drives the eccentric wheel 2 to rotate through the output shaft of the stepping motor 1, the transmission piece 6 is arranged on the support 3, the support 3 is fixed on the operating platform through the elastic piece 5, when the eccentric wheel 2 rotates to different angles, the transmission piece 6 generates different displacements, the support 3 moves in the front-back direction, finally, the incident slit 4 moves in the front-back direction, the eccentric wheel 2 can push the transmission piece 6, and the elastic piece 5 can pull back the transmission piece 6, so that the micro-displacement of the incident slit 7 is realized.

A plate-shaped base 8 is horizontally arranged below the support 3, the lower ends of the two elastic sheets 5 are fixed on the base 8, the base 8 is fixed on the operating table, and a gap is reserved between the bottom surface of the support 3 and the base 8, so that the device is more convenient to mount.

Two mounting grooves 9 are arranged on the upper surface of the slit carrier 4 along the length direction, two screws which can respectively extend into the two mounting grooves 9 are vertically arranged on the top surface of the support 3, when the screws are screwed, the slit carrier 4 is fixed in the through hole of the support, and when the screws are unscrewed, the slit carrier 4 can be taken out.

The preferred angle of inclination of the slit carrier 4 on the support is 54.5 deg., whereby the support 3 is known to be not perpendicular to the output shaft of the stepper motor 1.

The device further comprises a motor base 11, the motor base 11 is L-shaped, a hole through which the small end of the stepping motor 1 can penetrate is formed in the vertical portion of the motor base 11, the bottom surface of the horizontal portion is flush with the bottom surface of the cushion block 10, and the horizontal portion is fixed on the operating table.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The micro-displacement device of the entrance slit is characterized in that: the device comprises a stepping motor, an eccentric wheel, a bracket, a slit carrier and elastic sheets, wherein the eccentric wheel is sleeved on an output shaft of the stepping motor, the bracket is plate-shaped and is vertically arranged along the front and back directions, the stepping motor is arranged along the left and right directions, the eccentric wheel is arranged in front of the bracket, a transmission sheet is arranged on the middle part of the front side of the bracket in a leftward inclining manner, the transmission sheet and the eccentric wheel are arranged in parallel contact, a through hole is obliquely arranged on the bracket, the inclination angle of the through hole is consistent with that of the transmission sheet, the slit carrier is arranged in the through hole, the slit carrier is a hollow cylinder with an open end and a closed end, the axis of the through hole is parallel to that of the hollow cylinder, the closed end of the slit carrier is positioned at the left end, an incident slit is vertically arranged on the slit carrier, the upper parts of the front, the lower end is fixed on the operation table.

2. The entrance slit micro displacement device of claim 1, wherein: the lower part of the bracket is horizontally provided with a plate-shaped base, the lower ends of the two elastic sheets are fixed on the base, the base is fixed on the operating table, and a gap is reserved between the bottom surface of the bracket and the base.

3. The entrance slit micro displacement device according to claim 1 or 2, wherein: two mounting grooves are formed in the upper surface of the slit carrier along the length direction of the slit carrier, and two screws capable of respectively extending into the two mounting grooves are vertically arranged on the top surface of the support.

4. The entrance slit micro displacement device of claim 1, wherein: the angle of inclination of the slit carrier on the support is 54.5 °.

5. The entrance slit micro displacement device of claim 4, wherein: the device is characterized in that a cushion block is arranged on the lower portion of the large end of the stepping motor, the device further comprises a motor base, the motor base is L-shaped, a hole through which the small end of the stepping motor can penetrate is formed in the vertical portion of the motor base, the bottom surface of the horizontal portion is flush with the bottom surface of the cushion block, and the horizontal portion is fixed on the operating table.