JPH0140944B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for forming a space in which a cell can be attached and detached in the radial direction of a rotatably driven disk in various devices that utilize a rotating disk, such as a particle size distribution measuring device, and The present invention relates to a cell holder in a rotating disk comprising a cell presser provided above the cell attachment/detachment space.

Conventionally, as shown in FIG. 6, this type of cell holder has been constructed by placing and fixing boxes b, b, which are open only at their inner ends, on the upper surface of a rotary disk a, and moving the cell c in the radial direction of the disk a (arrow For example, as shown in Fig. 7, a hole f which is considerably larger than the size of the cell e itself is bored in the rotary disk d to allow the cell to be attached and detached by moving it in the direction k). with two fingers, and rotate cell e with disk d
There was a structure in which the cell presser h was moved in the radial direction (in the direction of arrow g), and the cell presser h was fixed at the cell presser position. In these conventional configurations, since the protruding volume or recessed volume from the upper surface of the rotating discs a and d is extremely large, air resistance or strong eddy currents occur due to high-speed rotation of the rotating discs a and b. Therefore, the rotating disks a and d vibrate violently, causing inconvenient situations such as noise and heat generation, and cells c and e
There were shortcomings that caused dangerous and fatal problems such as damage to the equipment and a decrease in the reliability of measurement data. In addition, in these conventional configurations, cells c, e
Attachment and detachment must be carried out by moving in the radial directions k and g in a horizontal state, and the attachment and detachment operations are relatively troublesome and time-consuming.

The present invention has been made in view of the above-mentioned circumstances, and does not cause any inconvenient situations such as vibration, noise, or heat generation even when the rotary disk rotates at high speed, and is safe and easy to operate. The purpose of the present invention is to provide a cell holder so that stable and reliable measurements can be performed at all times.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the exemplary diagrams of FIGS. 1 to 4.

The figure shows a measuring rotary disk part in a particle size distribution measuring device for optically measuring the particle size of a liquid sealed in a square cell 1.
As shown in the overall plan view of the figure, two mutually symmetrical rotary disks 2 are configured to be rotationally driven in the direction of arrow Y around the center _P1 by a drive device such as a motor (not shown). At the position, cell holders 3, 3 according to the invention are provided.

The structure of the cell holder 3 is as shown in the perspective view of FIG. 2, the partial plan view of FIG. 3, and the partial sectional view of FIG.
A hole 5 is drilled along the radial direction of the cell case 4 for tightly storing the cell case 4 in a removable manner, and both sides of the hole 5 are cut to a depth substantially the same as the thickness of a cell holding tool 6 to be described later. A recessed portion 7 is provided.

The cell case 4 has a bottom wall 4a and three vertical side walls 4.
b, 4c, and 4d, and in a state where the rotary disk 2 is tightly housed in the hole 5, there is a space _S1 above the bottom wall 4a of a size that allows the cell 1 to be mounted substantially without any gaps. , is formed so as to define a slot S consisting of only a space _S2 necessary for inserting the tip of just one finger when attaching and detaching the cell 1, and which is as small as possible. Note that although the cell case 4 has the same external shape, there is a space for mounting the cell.
_S1 is available in various shapes and sizes depending on the shape and size of the cell used, and can be replaced at will to use the appropriate one according to the cell used. be.

According to the above configuration, when attaching or detaching the cell 1, there is no need to move the cell 1 horizontally in the radial direction of the rotary disk 2 as in the conventional case, and as shown in FIG. This can be done simply by rotating the part as a reference point.

The cell presser 6 has the following features in the recess 7:
The cell holding position located above the cell mounting space S ₁ of the slot S defined by the cell case 4 (the state shown by the solid line in FIG. 3) and the cell holding position located above the cell mounting space S 1 of the slot S defined by the cell case 4, It is constructed of a thin plate-shaped body that is swingable around the vertical axis _P2 so that the presser foot position (the state shown by the imaginary line in FIG. 3) can be changed. (Refer to Fig. 5) The thickness of this thin plate-like cell holding device 6 is determined by the thickness of the rotating disk 2 as described above.
Since the depth of the recess 7 is substantially the same as that of the recess 7 , its upper surface is substantially at the same level as the upper surface of the rotary disk 2 . The vertical axis P ₂ is the slot 5
is located on the lower side in the rotational direction of the disk 2 and on the outer side in the radial direction of the disk 2, and the thin plate-shaped body cell presser 6 is semi-fixed at this position by one screw 8. Its mounting structure is as shown in FIG.
With a washer 9 interposed between the lower surface and the upper surface of the recess 7 of the rotary disk 2, one screw is inserted through the hole 6a drilled around the vertical axis _P2 at one end of the cell presser 6. 8 is inserted and screwed onto the rotary disk 2. With this configuration, the thin plate-like cell presser 6 is automatically swung to the cell presser position by the centrifugal force of the rotary disk 2 as it rotates. By adjusting the tightness of the bolts 8, the automatic movement of the cell presser 6 is realized by a relatively low rotation of the rotary disk 2.

In addition, in the figure, 6b is a finger hole for inserting a finger when returning the cell presser 6 to the non-pressing position, 6c and 2
A is a hole through which a measuring light beam passes.

In the embodiment described above, a cell case 4 separate from the rotary disk 2 was used to form the slot S, but this cell case 4 is not necessarily required, and the cell case 4 is not necessarily required. The slot S may also be drilled directly. In addition, rotating disk 2
Although the recess 7 is provided in the cell holder so that the upper surface of the thin plate-like cell holder 6 and the upper surface of the rotary disk 2 are essentially on the same level, the recess 7 is not necessarily provided. 6 Rotating disk 2
The lower surface of the cell presser 6 and the upper surface of the rotary disk 2 may be placed on the same level. It is okay for there to be some differences in the hierarchy.

In summary, the cell holder in the rotary disk according to the present invention is as described at the beginning, and the cell attachment/detachment space is formed by a space for attaching cells substantially without gaps and a cell holder for attaching/detaching cells. A slotted hole is provided in the radial direction of the rotary disk defining only a space necessary for inserting a fingertip, and the cell holding device is configured with a cell holding position located above the slotted hole. The cell holding device is configured to be swingable around a vertical axis so that the cell position can be changed from the upper part of the slot to the non-pressing position, and the cell holding device is moved by centrifugal force caused by rotation of the rotary disk. It is characterized in that it is configured such that it is automatically swung toward the cell holding position.

In other words, when the cell is attached, only a small space equivalent to one fingertip remains.
By forming as small a slot as possible in the rotating disk, the air resistance of the rotating disk can be reduced, and even if the disk rotates at high speed, it will not cause the conventional disadvantages such as vibration, noise, and heat generation. This eliminates the conventional problem of cell damage leading to decreased reliability of measurement data. In addition, by configuring the cell holding device so that its position can be changed between the cell holding position and the cell non-holding position, when taking out the cell, it can be moved in the disk radial direction after holding the cell in a horizontal position, as in the conventional case. Instead of having to do this, it has become extremely easy to do this by simply swinging it up and down. Furthermore, since the cell holding device is configured to automatically swing to the cell holding position as the rotary disk rotates, it is possible to achieve extremely high safety.

[Brief explanation of drawings]

The drawings illustrate and explain embodiments of the present invention, and FIG. 1 is an overall plan view, FIG. 2 is a perspective view of the main part, FIG. 3 is a plan view of the main part, and FIGS. 4 and 5 are a plan view of the main part. 6 and 7 are longitudinal cross-sectional views of essential parts, respectively, and are explanatory diagrams of the conventional example. 1... Cell, 2... Rotating disk, 3... Cell holder, 4... Cell case, 5... Hole, 6...
Cell holder, S...slot, _S1 ...space for cell attachment, _S2 ...space for fingertip insertion, _P2 ...vertical axis center.

Claims (1)

[Scope of Claims] 1. A cell holder for a rotating disk, which has a space in which cells can be attached and detached in the radial direction of a rotationally driven disk, and a cell presser is provided above the cell attachment and detachment space. , in forming the cell attachment/detachment space, the slotted hole defines only a space for attaching the cell with substantially no gaps and a space necessary for inserting one fingertip when attaching/detaching the cell; The cell presser is provided in the radial direction of the rotary disk and is changeable in position between a cell presser position located above the slot and a cell non-presser position removed from above the slot. The cell holding device is configured to be swingable around a vertical axis, and the cell holding device is configured to be automatically swung toward the cell holding position by centrifugal force accompanying rotation of the rotating disk. A cell holder in a rotating disk characterized by: 2. The cell holder according to claim 1, wherein the upper surface of the cell presser is substantially on the same level as the upper surface of the rotary disk. 3. The cell holder according to claim 1, wherein the lower surface of the cell presser is substantially on the same level as the upper surface of the rotary disk. 4. The cell holder according to any one of claims 1 to 3, wherein the slot for the cell attachment/detachment space is formed directly in the rotary disk. 5. The slot for the cell attachment/detachment space is formed in a cell case separate from the rotary disk, and the cell case is configured to be removably housed in a hole bored in the rotary disk. A cell holder according to any one of claims 1 to 3.