JP2008089551A - Tube mount structure - Google Patents

Abstract

An object of the present invention is to securely hold each tube by bringing a ball of a ball plunger provided on a holding plate for holding the tube into contact with a peripheral surface of the tube.
A tube mount structure according to the present invention includes a screw hole (20, 21) formed in a holding plate (2, 3) corresponding to each holding hole (4, 5), and each screw hole (20 , 21) and the ball plunger (24) screwed into the ball plunger (24) and the ball (22) of each ball plunger (24) are in contact with the peripheral surface of each tube (13, 14) by a spring.
[Selection] Figure 1

Description

  The present invention relates to a tube mount structure, and in particular, by bringing a ball plunger into contact with the peripheral surface of the tube, the tube can be fixed at a predetermined position regardless of the presence or absence of wrinkles, and dispensing can be reliably performed. Related to new improvements.

Conventionally, as this type of tube mount structure that has been used, for example, the configuration disclosed in Patent Document 1 can be cited, and specifically, the configuration shown in FIGS. 3 to 10 is employed. It was.
That is, what is denoted by reference numeral 1 in FIG. 3 is an upper open type box, and a pair of first and second holding plates 2 and 3 are arranged in parallel in the box 1.

  A plurality of first holding holes 4 are formed in the first holding plate 2 along the longitudinal direction, and a plurality of second holding holes 5 are formed in the second holding plate 3 along the longitudinal direction. Are formed at intervals.

Next, FIG. 4 shows the cross-sectional structure of FIG. 3, and the bottom 10 of the box 1 has first and second holding recesses 11 corresponding to the first and second holding holes 4, 5. 12 is formed.
A lower end portion 13A of the first tube 13 provided by being inserted into each first holding hole 4 and shown in FIGS. 8 to 10 is engaged and positioned in the first holding recess 11, and each second holding portion is positioned. The lower end portion 14A of the second tube 14 provided by being inserted into the hole 5 and shown in FIGS. 5 to 7 is engaged and positioned in the second holding recess 12.

In the vicinity of the second holding plate 3, a press plate 15 is provided in a state of being partially overlapped with the second hold plate 3, and both ends of the press plate 15 are planted on the bottom surface 10. It is held by a pair of columns 16 and a screw body 17.
Each concave groove 15 a formed on one side of the presser plate 15 is engaged between the flange portions 14 a and 14 b at a part of the peripheral surface of the second tube 14, and supports the upper portion of each second tube 14. is doing.

JP 2006-194671 A

Since the conventional tube mount structure is configured as described above, the following problems exist.
In other words, if each tube held in each holding hole of each holding plate is not supported vertically, it may cause a problem such that the nozzle of the dispensing device cannot enter the tube when the reagent is aspirated / discharged. Therefore, as shown in FIG. 4, the upper plate of the second tube must be pressed using a holding plate. When replacing each tube, it is necessary to remove this holding plate. Took time and effort.
Further, in the case of the first tube that is supported without using the presser plate, since the flange portion is not used, the first holding hole and the first tube are not sufficiently positioned, and the first tube is held vertically. It was extremely difficult to do.

  A tube mount structure according to the present invention includes a longitudinal holding plate provided in a box and having a plurality of holding holes, a holding recess formed on the bottom surface of the box, and a tube provided through the holding hole. A tube mount structure in which the lower end of the tube is engaged with the holding recess, and is screwed into the screw hole formed in the holding plate corresponding to each holding hole. A ball plunger, and a ball at the tip of the ball plunger is in contact with a peripheral surface of the tube by a spring in the ball plunger, and a plurality of the holding plates are arranged in parallel. It is the structure provided.

Since the tube mount structure according to the present invention is configured as described above, the following effects can be obtained.
That is, because the ball at the tip of the ball plunger is pressed against the peripheral surface of the tube by the bias of the spring, a frictional resistance is generated against the tube, and the tube is difficult to move against a certain force in the insertion / extraction direction Vertical retention of the tube can be achieved.
Further, since the ball plunger is fixed with a screw, the frictional force can be easily adjusted by adjusting the screwing amount.
Further, since the ball plunger is in contact with the peripheral surface of the tube, the tube can be reliably fixed regardless of the presence or absence of wrinkles.

  The present invention provides a tube mount structure in which a ball plunger is brought into contact with a peripheral surface of a tube so that the tube is fixed at a predetermined position regardless of the presence of wrinkles and can be reliably dispensed. The purpose is to do.

A preferred embodiment of a tube mount structure according to the present invention will be described below with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
In FIG. 1, reference numeral 1 denotes an upper open type box, and a pair of first and second holding plates 2 and 3 are arranged in parallel in the box 1.

  A plurality of first holding holes 4 are formed in the first holding plate 2 along the longitudinal direction, and a plurality of second holding holes 5 are formed in the second holding plate 3 along the longitudinal direction. Are formed at intervals.

Next, FIG. 2 shows the cross-sectional structure of FIG. 1, and the bottom 10 of the box 1 has first and second holding recesses 11 corresponding to the first and second holding holes 4, 5. 12 is formed.
A lower end portion 13A of the first tube 13 provided by being inserted into each first holding hole 4 is engaged and positioned in the first holding recess 11, and is provided by being inserted into each second holding hole 5. The lower end portion 14 </ b> A of the second tube 14 is engaged and positioned in the second holding recess 12.

  A well-known structure, that is, a ball plunger 24 including a ball 22, a spring (not shown) and a screw portion 23 is screwed into the screw holes 20 and 21 formed in the holding plates 2 and 3. ing.

  The screw holes 20 and 21 formed in the holding plates 2 and 3 are formed in a direction parallel to the surface of the holding plates 2 and 3, and the balls 22 of the ball plungers 24 are arranged around the tubes 13 and 14. The tubes 13 and 14 are securely positioned and held in the holding holes 4 and 5 in contact with the surfaces 13B and 14B.

  In the above case, since the balls 22 of the ball plungers 24 on the peripheral surfaces 13B and 14B of the tubes 13 and 14 are pressed by the bias of a spring (not shown), sufficient frictional resistance against the tubes 13 and 14 is obtained. Therefore, the tubes 13 and 14 are difficult to move with respect to a certain force in the insertion / extraction direction, and vertical holding of the tubes 13 and 14 can be achieved.

Further, since the ball plunger 24 is fixed by the screw portion 23, the frictional force can be easily adjusted by adjusting the screwing amount of the screw portion 23.
In addition, since the ball plunger 24 is in contact with the peripheral surfaces 13B and 14B of the tubes 13 and 14, the tubes 13 and 14 can be reliably fixed regardless of the presence or absence of the flange portions 14a and 14b.

It is a top view which shows the tube mount structure by this invention. It is sectional drawing of FIG. It is a top view which shows the conventional structure. FIG. 4 is a cross-sectional view of FIG. 3. It is a top view which shows this invention and the conventional several tube. FIG. 6 is a front view of FIG. 5. FIG. 7 is a side view of FIG. 6. It is a top view which shows this invention and the some other conventional tube. It is a front view of FIG. FIG. 10 is a side view of FIG. 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Box 2 1st holding plate 3 2nd holding plate 4 1st holding hole 5 2nd holding hole 10 Bottom face 11 1st holding recessed part 12 2nd holding recessed part 13 1st tube 13A, 14A Lower end part 13B, 14B Circumferential surface 14 2nd tube 14a, 14b Gutter part 20, 21 Screw hole 22 Ball 23 Screw part 24 Ball plunger

Claims (2)

A longitudinal holding plate (2, 3) provided in the box (1) and having a plurality of holding holes (4, 5), and a holding recess formed on the bottom surface (10) of the box (1) ( 11, 12) and a tube (13, 14) provided through the holding hole (4, 5),
In the tube mount structure in which the lower end (13A, 14A) of the tube (13, 14) is engaged with the holding recess (11, 12),
A screw hole (20, 21) formed in the holding plate (2, 3) corresponding to each holding hole (4, 5), and a ball plunger screwed into the screw hole (20, 21) ( 24)
The ball (22) at the tip of the ball plunger (24) is configured to come into contact with the peripheral surface (13B, 14B) of the tube (13, 14) by a spring in the ball plunger (24). Characteristic tube mount structure.   The tube mount structure according to claim 1, wherein a plurality of the holding plates (2, 3) are provided in parallel.

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