JPH0588298U - Incubator - Google Patents

Abstract

(57) [Abstract] [Purpose] To facilitate the attachment / detachment work of the bush 20 to / from the support ring 17. [Structure] A rod-shaped body such as a PH sensor is provided with a cover plate 2 and a support ring 17.
This rod-like body is prevented from swinging by supporting it at two positions. A notch is formed in the support ring 17 for mounting the bush 20 for supporting the rod-shaped body. By inserting the bush 20 into the notch and rotating it 90 degrees, the bush 20 is prevented from coming out of the notch.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The culturing device according to the present invention is attached to a culturing device for culturing plant cells and various microorganisms, and supports a rod-shaped body inserted into the culturing device such as a PH sensor so as not to come into contact with a stirring blade. To use for.

[0002]

[Prior Art]

 In order to culture plant cells and various microorganisms, culture apparatuses as shown in FIGS. 4 to 5 have been conventionally used. The upper end opening of the bottomed cylindrical culture tank 1 is closed by a cover plate 2. Below the cover plate 2, a support frame 3 including a plurality of upper and lower stays 6a and 6b and a plurality of vertical support rods 7 and 7 is supported, and the support frame 3 agitates the support frame 3. The shaft 4 is rotatably supported at the center of the culture tank 1.

That is, the upper end of the stirring shaft 4 is rotatably supported by the upper bearing 5 fixed to the center of the lower surface of the lid plate 2, and the base end of the upper bearing 5 is fixedly coupled to the periphery of the upper bearing 5. The upper ends of the support rods 7, 7 are coupled and fixed to the tips of the plurality of stays 6a, 6a arranged radially. On the other hand, the tips of the stays 6b and 6b, whose base ends are coupled and fixed to the outer peripheral surface of the lower bearing 8 which rotatably supports the lower part of the stirring shaft 4, are attached to the lower parts of the support rods 7 and 7, respectively. Are connected.

A disc-shaped magnet 9 is fixed to the lower end of the stirring shaft 4, and the magnet 9 is provided outside the culture tank 1 and faces another magnet that is rotationally driven by a motor. Therefore, a magnetic coupling that rotates the stirring shaft 4 by the motor is configured. In this way, stirring blades 10 and 10 are provided at two positions of the lower portion and the intermediate portion of the stirring shaft 4 which is rotationally driven, so that the culture solution stored in the culture tank 1 can be stirred freely. .. Further, a defoaming blade 11 is provided at the upper end of the stirring shaft 4 so that bubbles generated on the liquid surface of the culture solution can be eliminated.

On the other hand, a part of the lid plate 2 has a plurality of circular holes 12 formed on a single arc centered on the stirring shaft 4, and the support cylinders 13 are formed in the portions surrounding the circular holes 12, respectively. , 13 are fixed. The inner peripheral surface 13a of each of the support cylinders 13 and 13 is a tapered surface whose diameter decreases toward the lower side. As shown in FIG. 6, inside each of the support cylinders 13 and 13, the outer peripheral surface is a taper surface that can be brought into close contact with the inner peripheral surface 13a of the support cylinders 13 and 13, and the inner peripheral surface of the PH sensor 14 or the like. An elastic member 15, which is a cylindrical surface having an inner diameter that allows the rod-shaped body to be inserted without rattling, is internally fitted.

Then, the rod-shaped body such as the PH sensor 14 is inserted into the inside of the culture tank 1 with each elastic member 15 penetrating vertically. In this state, cap nuts 16 and 16 are screwed onto the upper ends of the support cylinders 13 and 13 so that the elastic member 15 does not come out from the inside of the support cylinder 13.

A circular ring-shaped support ring 17 is supported below the cover plate 2 by a support frame 3. That is, the supporting ring 17 as shown in FIG. 7 is horizontally supported by the suspending arms 18, 18 whose upper ends are fixed to the tips of the plurality of stays 6a, 6a. A plurality of circular holes 19, 19 are formed in the support ring 17, and bushes 20 (FIG. 8) are locked inside the circular holes 19, 19. Then, a rod-shaped body such as the PH sensor 14 is inserted into the bush 20 without rattling.

The bush 20 is made of an elastic material such as PTFE as shown in FIG. That is, a circular hole 21 is formed in the central portion so that the rod-shaped body can be inserted without rattling, and the outer peripheral surface of the upper end portion has an outer diameter sufficiently larger than the inner diameters of the circular holes 19, 19 of the support ring 17. The collar portion 22 is formed. A short cylindrical portion 23 having an outer diameter slightly larger than the inner diameters of the circular holes 19 is formed on the lower surface of the collar portion 22, and the upper end portion of the short cylindrical portion 23 has the circular shape. A concave groove 24 having an outer diameter equal to or slightly smaller than the inner diameter of the holes 19 is formed over the entire circumference.

The bush 20 formed in this way is pushed from above the support ring 17 into the circular holes 19 and 19 while elastically deforming the lower half portion of the short cylindrical portion 23 to push the circular holes. It locks on the periphery of 19, 19.

As described above, by inserting the rod-shaped bodies into the bushes 20 locked to the support ring 17, each rod-shaped body is supported at two positions, that is, the cover plate 2 portion and the support ring 17. Therefore, each rod-shaped body supported by the lid member 2 by the elastic member 15 does not swing around the elastic member 15 and the lower portion of each rod-shaped body collides with the stirring blades 10 and 10. Things are prevented.

[0011]

[Problems to be solved by the device]

 However, when the rods are supported as described above, the work of attaching and detaching the rods to and from the support ring 17 is troublesome, and when the bush 20 is damaged or soiled, much work is required for repairing or replacing the bush 20. It was unavoidable that it required.

That is, when the bush 20 is damaged, it is necessary to replace the bush 20 in order to prevent the rod-like body from swinging, and when the bush 20 mounting portion is soiled, the culture solution is In order to prevent contamination, the bush 20 still needs to be replaced.

However, in the case of the conventional structure in which the bush 20 as shown in FIG. 8 is mounted in the circular holes 19, 19 of the support ring 17 as shown in FIG. 7, the mounting work is performed inside the circular holes 19, 19. Since it is only necessary to push the short cylindrical portion 23 of the bush 20 into the bush 20, it can be relatively easily performed even if a little force is required, but the removal work can be done from the circular holes 19 and 19 through the short cylindrical portion 23 of the bush 20. It has to be pulled out, which is a very troublesome task.

The culture device of the present invention eliminates the above-mentioned inconvenience.

[0015]

Means for Solving the Problems The culturing apparatus of the present invention comprises a bottomed cylindrical culturing tank, a cover plate for closing the upper end opening of the culturing tank, and a support frame supported below the cover plate. With this support frame, a stirring shaft rotatably supported in the center of the culture tank, a stirring blade supported in the middle of the stirring shaft, and a part of the lid plate to support the stirring shaft. A plurality of circular holes formed on a single circular arc as the center, and a tapered surface whose inner peripheral surface becomes smaller in diameter as it goes downward, and is fixed to the portion surrounding each circular hole on the upper surface of the lid plate. The plurality of support cylinders and the outer peripheral surface are tapered surfaces that are intimately contactable with the inner peripheral surface of the support cylinder, and the inner peripheral surface is a cylindrical surface having an inner diameter that allows the rod-shaped body to be inserted without rattling. A plurality of elastic members fitted in the support tube and vertically inserted through the elastic members and inserted into the culture tank. A rod-shaped body, a ring-shaped support ring supported below the lid plate, a plurality of notches formed in a part of the support ring that aligns with the circular hole, and a central portion of each of them. Has a circular hole through which the rod-shaped body can be inserted without rattling, and a bush which can be locked inside the notches.

Each of the notches is formed by connecting the arcuate portion at the rear end and the peripheral edge of the support ring by an opening having a width dimension smaller than the diameter dimension of the arcuate portion, and the bush is , A main collar having an outer diameter sufficiently larger than the diameter of the circular arc, a width slightly smaller than the width of the opening, and a length sufficiently larger than the diameter of the circular arc. The sub-collar portion that is provided, and that connects the center of this sub-collar portion and the center of the above-mentioned main collar portion, is approximately the same as the thickness dimension of the above-mentioned support ring and slightly smaller than the diameter of the above-mentioned arc portion. The connecting portion has a length dimension and a width dimension slightly smaller than the width dimension of the opening.

[0017]

[Action]

 In the case of the culture device of the present invention configured as described above, the work of attaching and detaching the bush to the support ring can be easily performed. That is, when the bush is attached to the supporting ring, the connecting portion is inserted through the opening with the width direction of the connecting portion of the bush and the width direction of the opening of the notch of the supporting ring being aligned. Insert in the arc part. Then, the bush is rotated about 90 degrees with the connecting portion completely entering the arc portion. As a result, the width direction of the connecting portion and the width direction of the opening portion do not coincide with each other, and the connecting portion does not come out of the notch through the opening portion.

When removing the bush from the support ring, the width direction of the connecting portion and the width direction of the opening portion are made to coincide with each other by rotating the bush. As a result, the above-mentioned connecting portion can be pulled out to the outside of the notch through the opening.

[0019]

【Example】

 1 to 3 show an embodiment of the present invention. Since the structure and operation other than the part where the bush is attached to the support ring are the same as those of the conventional culture device shown in FIG. 4, the same parts are designated by the same reference numerals and overlapped. The description will be omitted, and the characteristic part of the present invention will be described below.

As shown in FIG. 1, the circular ring-shaped support ring 17 supported below the cover plate 2 (FIG. 4) has a plurality of notches 25, 25 that open to the inner peripheral edge side of the support ring 17. Is formed. The plurality of notches 25, 25 are formed in a portion aligned with the plurality of circular holes 12 (FIG. 4) formed in the lid plate 2. Each of these notches 25, 25 has a width smaller than the diameter dimension R of each arcuate portion 26, 26 between the arcuate portion 26, 26 at the back end (end near the outer periphery) and the inner peripheral edge of the support ring 17. The openings 27, 27 having the dimension W are continuous.

In FIG. 1, the notches 28, 28 formed in the outer peripheral edge of the support ring 17 are the support rods 7, 7 (FIG. 4) constituting the support frame 3 provided on the lower side of the cover plate 2. ), And the circular holes 29, 29 are for inserting screws for supporting the support ring 17 on the support frame 3.

On the other hand, the bush 20 mounted inside the notches 25, 25 of the support ring 17 is made of a synthetic resin such as PTFE as shown in FIGS. The bush 20 having a circular hole 21 in the center portion through which a rod-shaped body such as a PH sensor can be inserted without rattling is formed by connecting a parallel main flange portion 30 and a sub-collar portion 31 with a connecting portion 32. Is made.

The main collar portion 30 in the inside is disk-shaped and has an outer diameter D (D> R) sufficiently larger than the diameter dimension R of the circular arc portion 26 of the notch 25. Further, the sub-collar portion 31 is formed by cutting out a part of the disk to form linear portions 33, 33 parallel to each other, and the overall shape is formed into a substantially oval shape. The sub-collar portion 31 has a width dimension w slightly smaller than the width dimension W of the opening 27 of the cutout 25 and a length dimension L sufficiently larger than the diameter dimension R of the arc portion 26. Have.

Further, the connecting portion 32 has a thickness dimension T (t≈T) substantially equal to the thickness dimension t (FIG. 4) of the support ring 17 and slightly smaller than the diameter dimension R of the circular arc portion 26. It has a small length dimension l (R> l) and a width dimension w that is slightly smaller than the width dimension W of the opening 27 and is the same as the width dimension of the sub-collar portion 31.

In the case of the culture device of the present invention, which comprises the support ring 17 having the notches 25 and 25 as described above and the bush 20 as described above, the bush is attached to the support ring 17. The work of attaching and detaching 20 can be performed easily.

First, when the bush 20 is attached to the support ring 17, the width direction of the connecting portion 32 of the bush 20 and the width direction of the opening 27 of the notch 25 of the support ring 17 are aligned with each other. That is, in a state where the length direction of the sub-collar portion 31 and the connecting portion 32 (left-right direction in FIG. 2) is aligned with the radial direction of the support ring 17, the connecting portion 32 is passed through the opening 27 to form an arc. It is inserted into the portion 26.

Since not only the width dimension w of the connecting portion 32 but also the width dimension w of the sub-collar portion 31 is smaller than the width dimension W of the opening portion 27, the bushing 20 is inserted into This can be easily performed by bringing the bush 20 and the support ring 17 close to each other from the state of facing the notch 25. However, when the bush 20 and the support ring 17 are brought close to each other, the bush 20 is positioned slightly closer to the center of the support ring 17 than the predetermined mounting position (at least by δ in FIG. 2). ..

Then, with the connecting portion 32 inside the notch 25, the bush 20 is moved radially outward to move the connecting portion 32 into the arc portion 26. When the connecting portion 32 is completely inserted into the circular arc portion 26 in this manner, the bush 20 is rotated about 90 degrees, and the auxiliary brim portion 31 and the connecting portion 32 are arranged in the width direction (upward and downward in FIG. 2). With the radial direction of the support ring 17. As a result, the connecting portion 32 does not come out of the notch 25 through the opening 27. Therefore, the rod-like body inserted in the circular hole 21 of the bush 20 can be reliably prevented from swinging.

When removing the bush 20 from the support ring 17, the bush 20 is rotated so that the width direction of the connecting portion 32 and the width direction of the opening portion 27 are aligned with each other. As a result, the connecting portion 32 can be pulled out of the notch 25 through the opening 27. Also during the extraction work, the bush 20 can be easily removed from the support ring 17 by moving the bush 20 inside the notch 28 slightly inward in the diametrical direction and then separating the support ring 17 from the bush 20. ..

[0030]

[Effect of the device]

 Since the culture device of the present invention is constructed and operates as described above, the work of attaching and detaching the bush with respect to the support ring can be easily performed, and the work of repairing the culture device can be made more efficient.

[Brief description of drawings]

FIG. 1 is a plan view of a support ring showing an embodiment of the present invention.

FIG. 2 is an enlarged bottom view of the bush.

3 is a sectional view taken along line AA of FIG.

FIG. 4 is a vertical cross-sectional view of a culture device to which the present invention is applied.

FIG. 5 is a plan view of the same.

FIG. 6 is a vertical cross-sectional view of a cover plate support portion of a rod-shaped body.

FIG. 7 is a plan view of a support ring used in a conventional structure.

FIG. 8 is a side view of a half portion of the bush.

[Explanation of symbols]

 1 Culture Tank 2 Lid Plate 3 Support Frame 4 Stirring Shaft 5 Upper Bearing 6a Stay 6b Stay 7 Support Rod 8 Lower Bearing 9 Magnet 10 Stirring Blade 11 Defoaming Blade 12 Circular Hole 13 Support Cylinder 13a Inner Surface 14 PH Sensor 15 Elastic Member 16 Cap Nut 17 Support Ring 18 Suspending Arm 19 Circular Hole 20 Bush 21 Circular Hole 22 Collar Section 23 Short Cylindrical Section 24 Groove 25 Notch 26 Arc Section 27 Opening 28 Notch 29 Circular Hole 30 Main Collar Section 31 Sub Collar Section 32 connecting part 33 straight part

Claims (1)

[Scope of utility model registration request] 1. A bottomed cylindrical culture tank, a lid plate for closing the upper end opening of the culture tank, a support frame supported on the lower side of the lid plate, and a support frame for the culture tank. A stirring shaft rotatably supported at the center, a stirring blade supported at an intermediate part of the stirring shaft, and a part of the lid plate formed on a single arc centered on the stirring shaft. A plurality of circular holes and a tapered surface whose inner peripheral surface becomes smaller in diameter toward the lower side, and a plurality of support cylinders fixed to the portion surrounding the circular holes on the upper surface of the lid plate and the outer peripheral surface support this A plurality of elastic members that are tapered surfaces that are intimately contactable with the inner peripheral surface of the cylinder, the inner peripheral surface being a cylindrical surface having an inner diameter that allows the rod-shaped body to be inserted without rattling, And penetrate each elastic member in the vertical direction,
A rod-shaped body inserted into the inside of the culture tank, a ring-shaped support ring supported below the lid plate, and a part of this support ring, a plurality of portions formed in a portion aligned with the circular hole. Each notch has a circular hole that allows the rod-shaped body to be inserted without rattling in its center, and a bush that can be locked inside each of the notches. The arc portion and the peripheral edge of the support ring are made continuous by an opening having a width dimension smaller than the diameter dimension of the arc portion, and the bush is sufficiently larger than the diameter dimension of the arc portion. A main collar portion having an outer diameter, a sub-collar portion having a width dimension slightly smaller than the width dimension of the opening portion and a length dimension sufficiently larger than the diameter dimension of the arc portion, and the center of the sub-collar portion. And the center of the main collar part, which is almost the same as the thickness of the support ring. Thickness and culture apparatus comprising a connecting part having a slightly smaller width than the width of the slightly smaller length dimension and the opening than the diameter of the arcuate portion.