DE2024545A1 - Sample tube rack - Google Patents

Description

May 14, 1970

DrH / H 1620/70

HORobert Bergquist, Sibylleg * 75, 5tr ", 114 36 Stockholm / SohwB-

den Sven H. Sköldenfelt, Stureg _e 62s, 5tr _eJ 114 43 Stockholm / Sweden

Jan AeSöderholm, Västmannag «, 77, 4tr _e> t13 26 Stockholm /

Sweden

Sample - tube - frame

The invention relates to a sample (or test) Tube frame containing at least two plates, at least one of which has a plurality of openings for Passing trial tubes, while the other plate either openings with a smaller Durohmesser or at all has no openings and is used to carry the sample tubes on the base, with spacers to hold the Plates are provided parallel to each other «

The invention relates to a sample tube-G-estell containing parts that desired units to height can be easily assembled, whereby these units can be stacked upon one another, creating larger units or blocks arise ₀

The essence of the invention is that the height of each spacer exceeds the greatest intended vertical distance between the panels and that each spacer at its intermediate ends with at least two axially distributed holding means for

109848/0184

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work together with appropriate means of the plates and that said spacers and / or plates have elastic properties for holding the plates in place on the spacers simply by pressing them together to have·

In the accompanying drawings are precautionary embodiments the invention illustrated * Ea show »

Fig, t is a side view of a sample pipe frame, with racks being indicated with dashed lines, which are stacked one on top of the other can;

Fig. 2 is a rear view of the sample tube racks Fig. 1}

Figure 3 is a side view of a spacer partially · in section, of part of the test tube frame according to Figures 1 and 2}

Fig. 4 is a plan view of one of the guides for guiding the Sample tubes serving plates;

Fig. 5 is a fragmentary plan view of a modified one Fastening means of a plate according to Fig. 4-j

6 shows a section through a modified fastening means with attached plates ύ η d

Fig. 7 is a perspective view of another converted fastener

109848/0184.,

In the drawings, 1 is preferably made of transparent plastic material such as Aoryl resin od, dergl «existing plates called a plurality of through-holes 2 for guiding, which can be seen from Pig · 4 of sample pipes show «With 3 is another plate denotes »dl · preferably identical to the plates 1 is, however, has no openings and serves as a carrier for the sample tubes.

As can be seen from Mg. 4, are located on the sides of the plates 1 and 3, cutouts 4, which are used to work together with the spacers 5 are intended to keep the panels parallel to each other «For this purpose each spacer 5 has at least two annular grooves 6. The abs tan * between the mentioned grooves determines the Distance between the plates in the assembled sample ~ pipe frame « The spacers are preferably made of a plastic material with elastic properties! so that a rigid connection is achieved between the plates and the spacers when pressing the same against the plates with grooves aligned with the cut-out parts *

From the above it should be apparent that the construction is very simple and just pressing the spacers against the sides of the plate. It is also offeifsiQhtlioh * that the test tube frame can be set up at a desired height by making clearances

109848/0104

ORlQtNAL INSPECTED

holder in its upper part contains an opening or a recess 7 into which a downwardly directed pin 8 of the spacer can be inserted »The lowermost pin 8 are used to rest on the frame od _{0 the} same _0,. on which the sample tube-frame is set up. Each spacer according to FIG. 3 can have three or more grooves 6, which make it possible to arrange the plates at a desired height and in the desired number, "

The distance between the ends of the spacers and the Upper and lower panels allow easy access to the individual sample tubes just when the sample Kohr racks are stacked on top of each other o

In order to achieve a better grip, it is of course also possible to leave the cutout parts with restricted areas 9 according to FIG. 5, so that the spacers snap into their cutout parts by virtue of the elasticity of the plate or the spacer ₀

Figo 6 zeigt- another embodiment with a modified spacer or _c spacer 11. The said spacer has horizontal flanges 12 and 15 top to grip the concerned edge portion of the plates ,, Me flanges 12 may preferably be somewhat elastic, while the lower flanges 13 stiffly are »A projection 14 protruding downwards from the flange 12 engages in a recess or an opening 15 located in the plate when the spacer on the plate is in a suitable position.

109848 / 0184-.

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The spacers remain precisely attached to the plates 1, 3 by means of these projections. Such spacers can also be provided on the upper cutouts 16 and lower pegs for the purpose described _{above, etc.}

As is apparent from the map shown in Fig. 7 another modified embodiment of the spacer, that denoted by 18 spacer tabs 19 and 21, whose free ends are facing each other has _o Such tongues are easy to manufacture simultaneously with the spacer by passing through injection molding ( "injection molding ") may be fully completed by the use of interconnected rolls ₀ the tabs are resilient and are normally from the surface of the spacer body before" below the upper tongue is a flange 20 or _o collar and the lower tongue another flange 22 provided ; In addition, the spacers have a recess at the upper end and a pin labeled 24 M ,, All these details of the spacer consist of one piece and are produced in a single operation, namely during injection molding. The distance between the free end of the respective Tongue and its splash is equal to the thickness of the plate concerned,

Heim ZuiJ-uuu-inaetzen a frobe-iiohr-Crestell with spacing iVilt -.- rn. ü-.i:; i I ¹ 'i. { ₀ 7 w ^ rd ^ n 'lie Abu t ^ Jii ^ h; · older ge ^ en a

the plate underneath simply pressed down, like that that the lower parts thereof are inserted into the corresponding openings. When the flange 22 the touches the upper surface of the plate, the tongue 21 pressed inwards by the plate again outwards and prevents any vertical movement of the plate Direction relative to the plate. The same function is achieved when the plate is above the upper part of the Spacer is moved down; in this case, however, the plate comes to the upper flange 20 to Lying on »

In the context of the mediated by the attached claims technical teaching, other modifications are of course also possible

U '·! ·· 4 : ', / Q 1 8 U

Claims (1)

Patent claims: Sample tube rack comprising at least two plates, one of which has at least one a plurality of openings for guiding sample tubes _s while the other plate either openings mit.kleinerem diameter or no openings and supporting the sample tube to the base serves , whereby spacers are provided for holding the plates parallel to each other, characterized in that the height of each spacer (5J-11J 18) exceeds the greatest intended vertical distance between the plates (1) and that each spacer at its intermediate ends is provided with at least two axially distributed holding means for interacting with corresponding means of the plates and that said spacers and / or plates have elastic properties for holding the plates on the spacers simply by pressing them together « 2, test tube frame according to claim 1, characterized in that the spacers (5) are in the form of rods with a preferably circular cross-section and their holding means preferably consist of annular grooves (6), the width of which is substantially equal to the thickness of the Plates with cutouts (4) on their sides. 109848/0 184. ■ " ₈ ~ can be seen, in which the grooved parts of the rods engage with friction _o Test tube frame according to claims 1 and 2, d a through characterized in that the cutout parts constrained near the plate boundary Have surfaces so that the rods can only be pressed into the cut-out parts if they have a certain force is exerted to overcome the elasticity of the material of the plate and / or the rod. Test tube frame according to claims 1 to 3 »characterized in that each spacer (18) has a bore (23) at its upper end and a downwardly directed one at its lower end. ended projection (24) so that different spacers (18) can be stacked on top of one another ₀ 109848 / Q184 Blank page