JPH089628Y2 - Micro cell holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a microcell holder, and more particularly to improvement of its height adjusting function.

[Prior Art] Generally, a spectroscopic analyzer is widely used for qualitative and quantitative analysis of components in a sample solution. When performing analysis of the sample liquid with this spectroscopic analyzer, the sample liquid is put into a cell formed of quartz glass or the like, or when the amount of the sample liquid is very small, the inside of the cell is formed into a groove shape, Microcells with reduced capacity are used.

By the way, in the microcell, the distance from the bottom surface of the groove provided in the microcell for injecting the test liquid to the bottom surface of the microcell itself varies depending on the cell and is not constant.

However, if the light is transmitted to the cell portion where the test liquid does not exist, proper analysis cannot be performed.

Therefore, when analyzing a small amount of test liquid of about several tens of microliters with a spectroscopic analyzer, a method in which a mask provided with a hole for passing light is attached to a microcell holder and the light flux is narrowed is used. There is. When the positions of the holes of the mask are fixed, the heights of the bottoms of the cell grooves are different, so that it becomes necessary to vertically adjust the positions of the mask holes and the bottoms of the cell grooves.

Therefore, as disclosed in Japanese Utility Model Laid-Open No. 63-156059, a screw for height adjustment is provided at the bottom of a microcell holder (sample cell holder in this publication), and the height is adjusted by the screw. Alternatively, the idea was to move the mask up and down.

[Problems to be Solved by the Invention] However, the conventional microcell holder described above is
A tool such as a screwdriver is required to adjust the height adjusting screw at the bottom, and it is difficult to finely adjust the height of the microcell holder.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a microcell holder capable of easily and precisely adjusting the bottom of the hole of the mask and the bottom of the microcell.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a microcell holder according to the present invention comprises a support base supported by a housing in which the microcell holder is housed with a gap between at least two columns. , A height adjusting portion disposed in a gap between the support base and the housing. The height adjusting unit has a height adjusting screw penetrating the support base. The upper end of the height adjusting screw is connected to the cell floor plate at the upper part of the supporting table, and the lower end is screwed to a height adjusting knob arranged in a gap between the supporting table and the housing. The cell floor plate is connected to the bottom surface of the microcell so that the microcell can move up and down. Further, the height adjusting knob is characterized in that at least a part thereof protrudes from a lower side of the support so that it can be manually operated from a side of the support.

[Operation] The microcell holder according to the present invention has the above-mentioned means, and the height adjustment unit adjusts the height as follows.
By adjusting the height adjusting knob screwed to the lower end of the height adjusting screw, the cell floor plate connected to the upper end of the height adjusting screw can be moved up and down. In this case, since the support base is supported by the columns, the support base does not move up and down,
Only the cell floor plate moves up and down. Since at least a part of the height adjusting knob projects from the lower side of the support base, no tool is required and the height can be adjusted with the microcell holder attached to the housing. That is, the fine adjustment is manually performed while visually observing the positions of the bottoms of the grooves of the microcells and the bottoms of the holes of the mask.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a state in which a microcell containing a sample is set in a microcell holder according to the present invention. The basic configuration of the present invention will be described in detail with reference to FIG.

A feature of the present invention is that the height adjusting knob is provided in the height adjusting portion of the microcell holder. Therefore, the microcell holder according to the present invention is configured as follows.

The microcell holder 10 shown in the figure includes a support base 14 supported by a column 12.

An L-shaped support frame 16 is erected on the support base 14, and a microcell 18 is positioned inside the support frame 16. Further, a vertically movable cell floor plate 20 is arranged at the bottom position of the microcell 18,
A cell retainer 22 is provided on the side surface of the cell 18.

The cell floor plate 20 is a height adjustment screw that penetrates the support base 14.
Connected to 24.

Furthermore, the screw 24 is screwed into the height adjustment knob 26,
The knob 26 is restricted by the support plate 28 in the vertical position with respect to the support base 14.

The microcell holder 10 according to the present embodiment is roughly configured as described above, and its operation will be described below.

First, the position of the microcell 18 is fixed by the support frame 16, and the microcell 18 is further supported by the cell retainer 22. A mask 30 having a hole for transmitting the measurement light is attached so as to cover the front surface of the microcell 18. This is because the sample in the microcell 18 is generally very small and the light flux needs to be narrowed.

At this time, in order to accurately transmit the measurement light, the heights of the bottom 30a of the hole of the mask and the bottom surface 18a of the groove of the microcell must match.

However, in general, the distance from the bottom surface 18a of the groove of the microcell to the floor plate 20 of the microcell holder (that is, the thickness of the bottom of the microcell) differs depending on the individual microcell, and thus the height needs to be adjusted.

Therefore, when the operator rotates the height adjustment knob 26,
Since the height adjusting screw 24 moves up or down in conjunction with this, the floor plate 20 of the microcell holder moves up and down, and therefore the height of the groove bottom surface 18a of the microcell 18 can be adjusted. Of course, at this time, since the support base 14 is fixed by the support columns 12, only the microcells 22 move up and down relative to the support base 14.

By the way, in general, the amount of sample in the microcell 18 is very small, so the height must be adjusted carefully.However, according to the microcell holder of the present invention, the height adjustment knob 26 is rotated by hand. Fine adjustment is possible while paying attention to the bottom side 30a of the hole and the height of the groove bottom surface 18a of the microcell.

Furthermore, it is very easy to operate and no tools are required.

Next, FIG. 2 shows a state in which the microcell holder according to the above embodiment is installed in the spectroscopic analyzer.

In this embodiment, the microcell holder 10 according to the present invention as a sample-side microcell holder and a control-side microcell holder 42 are installed in a housing 40. The structure of the contrast side microcell holder 42 is different from that of the sample side microcell holder 10 in that the height is fixed. Further, for example, water or the like is injected into the control-side microcell (not shown) for comparison.

Then, the cells are inserted into the sample-side microcell holder 10 and the control-side microcell holder 42, respectively, and the masks 30 and 44 are arranged. Then, measure light under the same conditions for each holder 10, 42.
Permeate 46 and 48. At this time, the measuring light 44
The height of the sample-side microcell holder 10 is precisely adjusted by rotating the adjusting knob 26 in order to accurately pass through the sample and 46 in the sample.

Then, each measurement result obtained by spectral analysis of the transmitted light is output.

Also in this embodiment, the height of the sample-side microcell holder 10 can be easily and freely adjusted, so that the measurement can be performed quickly and an accurate measurement result can be obtained.

[Advantages of the Invention] As described above, according to the microcell holder of the present invention, the height adjustment knob is provided in the height adjustment portion in a state where at least a part of the height adjustment portion protrudes from the side. Is provided. Therefore, since no tool is required, it is possible to move the microcell up and down with the microcell holder still attached to the housing, that is, while visually observing the positions of the bottom of the microcell groove and the bottom of the mask hole. Therefore, it becomes possible to easily and surely adjust the height of the bottom of the groove of the microcell and the bottom of the hole of the mask.

[Brief description of drawings]

FIG. 1 is a sectional view showing a state in which microcells are set in a microcell holder according to the present invention, and FIG. 2 is an external perspective view of a basic embodiment of the present invention. 10 …… Microcell holder 18 …… Microcell 26 …… Height adjustment knob

Claims (1)

[Scope of utility model registration request] 1. A support base, which is supported by a housing in which a microcell holder is accommodated, by at least two columns with a gap, and a height adjusting portion arranged in the gap between the support base and the housing. In the provided microcell holder, the height adjusting unit includes a height adjusting screw penetrating the support base, and the height adjusting screw has an upper end connected to the cell floor plate above the support base and a lower end connected to the support base. Is screwed into a height adjustment knob arranged in a gap between the housing and the housing, and the cell floor plate is arranged at a bottom position of the microcell so that the microcell can be moved up and down. A microcell holder characterized in that at least a part thereof projects from a side of a lower part of the support so that it can be more manually operated.