JP7251877B2 - A retainer and a method for manufacturing the retainer. - Google Patents

Description

The present invention provides a holder that can be used to hold test tubes, blood collection tubes, shafts of measuring jigs and processing jigs, anchor bolts that constitute the foundation of a house, umbrellas, optical fibers, plant stems, and the like. It is related with the manufacturing method of the said holder. In particular, the present invention relates to a holder that can be suitably used as a test tube stand for holding test tubes and blood collection tubes at low temperatures, and a method for manufacturing the holder.

2. Description of the Related Art Conventionally, a test tube stand has been used as an instrument for holding test tubes (tube containing reagents, blood, etc. used in experiments). As disclosed in Patent Document 1, a typical conventional test tube rack has a hole (supporting portion) having a shape corresponding to a test tube. hold. Moreover, such general test tube racks are manufactured using PP (polypropylene) or PS (polystyrene).

JP-A-10-174891

By the way, conventionally, the use of test tube racks was to store and transport test tubes at room temperature, but in recent years, it has been used to store and transport test tubes at low temperatures (e.g., minus 20 ° C. or less). A test tube stand is also used. In spite of such changes in the use of test tube racks, conventional test tube racks continue to be used, and for reasons 1 and 2 below, the problem of test tubes falling out of the test tube rack arises. ing.

Reason 1: The hole (supporting part) of the test tube stand is expanded by inserting the test tube, and the test tube stand is placed at a low temperature, so the hole (supporting part) of the test tube stand is expanded. It becomes hard at , and does not generate elastic force to hold down the test tube.

Reason 2: Since the glass transition temperature of PP (polypropylene) and PS (polystyrene), which are the materials of the test tube stand, is high at around 0 ° C and around 90 ° C, when the test tube stand is placed at a low temperature, The physical properties of are in the glass region (that is, the physical properties of the test tube stand are no longer in the rubber region), and the test tube stand does not generate elastic force to hold down the test tube.

The present invention has been made to solve the above problems, and its object is to provide a holder that can reliably hold a test tube even at low temperatures, and a method for manufacturing the holder.

To achieve the above objectives, the present invention includes the subject matter described in the following sections.

Item 1. A plate material having a through hole;
a holding body for holding an object to be held passed through the through hole,
The holding body is suspended from the plate material by coupling an upper end portion to the outer edge of the through hole, and extends below the through hole,
The holder has a U-shaped or V-shaped bifurcated portion, and the bifurcated portion is spaced apart in the transverse direction of the through hole.

Section 2. The holding body has a first forked portion as the forked portion,
Item 2. The holder according to Item 1, wherein the first bifurcated portion has a U-shape or a V-shape that opens downward, and constitutes the upper end portion of the holder.

Item 3. The holding body has a second forked portion as the forked portion,
Item 3. The holder according to Item 1 or 2, wherein the second bifurcated portion has a U-shape or a V-shape that opens upward and constitutes the lower end portion of the holder.

Section 4. Item 4. The test tube rack according to any one of Items 1 to 3, wherein the holder has a plurality of the forked portions.

Item 5. A plate material having a through hole;
a holding body for holding an object to be held passed through the through hole,
The holder is suspended from the plate member by connecting its upper end to the outer edge of the through hole, and extends below the through hole, and is made of polyethylene, polyacetal, or liquid crystal resin. A retainer formed from a material comprising:

Item 6. Materials forming the support include metallocene polyethylene, 0 to 100 parts by weight of liquid crystal resin with respect to 100 parts by weight of the metallocene polyethylene, and 0 to 60 parts by weight of low molecular weight polyethylene with respect to 100 parts by weight of the metallocene polyethylene. 6. A retainer according to clause 5, comprising:

Item 7. The material forming the support includes polyacetal, 0 to 100 parts by weight of a liquid crystal resin with respect to 100 parts by weight of the polyacetal, and 0 to 60 parts by weight of low molecular weight polyethylene with respect to 100 parts by weight of the polyacetal. 6. The holder according to item 5.

Item 8. The material forming the support includes polyethylene, 0 to 100 parts by weight of liquid crystal resin with respect to 100 parts by weight of the polyethylene, and 0 to 60 parts by weight of low molecular weight polyethylene with respect to 100 parts by weight of the polyethylene. 6. The holder according to item 5.

Item 9. Materials for forming the holding body include liquid crystal resin, 0 to 100 parts by weight of polyethylene or polyacetal with respect to 100 parts by weight of the liquid crystal resin, and 0 to 60 parts by weight of low molecular weight polyethylene with respect to 100 parts by weight of the liquid crystal resin. Item 6. The holder according to Item 5, which includes:

Item 10. Item 10. The holder according to any one of Items 1 to 9, wherein the material of the holder includes the material of the plate material.

Item 11. Item 11. The holder according to any one of Items 1 to 10, which is a test tube stand that holds a test tube as the object to be held.

Item 12. Item 1. A method for manufacturing a holder, comprising:
a step of manufacturing from a metal a mold having an internal space having a shape corresponding to the integrated body of the plate material and the holding body;
injecting a thermoplastic resin in a molten state into the interior space of the mold;
a step of cooling and solidifying the thermoplastic resin to form an integrated body of the plate material and the holding body;
A method for manufacturing a holder, comprising a step of demolding an integrated body of the plate material and the holder from the mold.

Item 13. Item 1. A method for manufacturing a holder, comprising:
a step of manufacturing from silicon a mold having an internal space having a shape corresponding to the integrated body of the plate material and the holding body;
A step of injecting a thermosetting resin into the internal space of the mold while vacuum degassing the internal space of the mold;
a step of curing the thermoplastic resin by heating the mold to form an integrated body of the plate material and the holding body;
A method for manufacturing a holder, comprising a step of demolding an integrated body of the plate material and the holder from the mold.

According to the holder of the present invention, even at low temperatures, an elastic force is generated to hold down the object to be held, so the object to be held can be reliably held even at low temperatures.

It is a perspective view showing a retainer concerning an embodiment of the present invention. It is a side view of a retainer concerning an embodiment of the present invention. It is a top view of a holder concerning an embodiment of the present invention. It is a bottom view of a base. FIG. 5(a) is a plan view showing an enlarged corner of the base, and FIG. 5(b) is a sectional view taken along line AA of FIG. 5(a). It is a side view which shows the lower end part of a column. FIG. 7(a) is a plan view showing an enlarged corner of the plate material, and FIG. 7(b) is a cross-sectional view taken along line AA of FIG. 7(a). It is a side view which shows the upper end part of a column. FIG. 10 is a side view showing a modification of the holder of the present invention; FIG. 4 is a side view showing an example of a holder; FIG. 11 is a side view showing another example of the holder; FIG. 5 is a schematic plan view showing the position of the upper end portion of the holder when through holes are formed in a square lattice. FIG. 11 is a side view showing another example of the holder; FIG. 11 is a side view showing another example of the holder; FIG. 10 is a schematic plan view showing the position of the upper end portion of the holder when the through holes are formed in a houndstooth pattern;

The holder of the present invention is suitable for holding an object to be held at a low temperature in terms of both structural and material features. Hereinafter, as an embodiment of the present invention, a case where the holder of the present invention is a test tube stand for holding test tubes (objects to be held) will be described. The above-mentioned test tube is a tube for containing reagents, blood, etc. used in experiments.

FIG. 1 is a perspective view showing a holder 1 as a test tube rack according to an embodiment of the present invention, showing a state in which a test tube S is held by the holder 1. As shown in FIG. FIG. 2 is a side view of the holder 1. FIG. FIG. 3 is a plan view of the holder 1. FIG. FIG. 4 is a bottom view of the base 2, which will be described later, and shows a state in which the base 2 is viewed from below.

A holder 1 according to this embodiment includes a base 2 , a column 3 , a plate 4 , and a holder 5 .

The base 2 is a plate material placed on a support surface (desk surface or the like). As shown in FIGS. 1 and 4, the base 2 is formed with a plurality of holes 6 in a square lattice. Each hole 6 has a circular shape and is used for inserting the lower end of a test tube S.

The pillars 3 are attached to the four corners of the base 2 . Each pillar 3 extends vertically and has a lower end supported by the base 2 . The four corners of the plate member 4 are supported by the upper ends of the columns 3 .

FIG. 5(a) is a plan view showing an enlarged corner of the base 2. FIG. FIG. 5(b) is a cross-sectional view taken along line AA of FIG. 5(a). FIG. 6 is a side view showing the lower end of column 3. As shown in FIG.

The holder 1 of the present embodiment has first engaging means 7 (FIG. 2) at the four corners of the base 2 so that the column 3 can be attached and detached. The first engaging means 7 includes claw portions 7A (FIGS. 2, 4, and 5) formed at the four corners of the base 2, and recessed portions 7B (FIGS. 2 and 5) formed at the lower ends of the columns 3. 6). The column 3 can be attached to the base 2 by engaging the claws 7A of the base 2 with the recesses 7B of the plate 4 . The column 3 can be removed from the base 2 by releasing the engagement between the claw portion 7A and the recessed portion 7B.

A portion of the side edge of the base 2 is made thin for the claw portion 7A. As shown in FIG. 5(b), the claw portion 7A has a thick portion that bulges downward on the distal end side 7Aa (outer side). Greater than the (inner) thickness. As shown in FIG. 6, in the recess 7B of the base 2, the diameter of the entrance side 7Ba is smaller than the diameter of the back side 7Bb (specifically, the hook portion 7A is located on the back side 7Bb of the recess 7B). A fitting portion 7Bb1 for fitting the tip side 7Aa is formed, and the diameter of the inlet side 7Ba is smaller than the diameter of the fitting portion 7Bb1). As a result, by fitting the tip side 7Aa of the claw portion 7A into the inner side 7Bb of the recess 7B (specifically, by fitting the tip side 7Aa into the fitting portion 7Bb1), an unintended external force is applied to the holder. 1, the claw portion 7A is prevented from slipping out of the concave portion 7B. Therefore, the state where the column 3 is attached to the base 2 can be maintained.

Further, as shown in FIG. 6, the back side 7Bb of the recess 7B extends upward (specifically, an extension portion 7Bb2 extending upward from the fitting portion 7Bb1 is formed on the back side 7Bb of the recess 7B. ), the entrance side 7Ba of the concave portion 7B can be easily widened when the claw portion 7A is inserted. Therefore, the claw portion 7A can be easily inserted into the concave portion 7B.

FIG. 7(a) is a plan view showing an enlarged corner of the plate member 4. FIG. FIG. 7(b) is a sectional view taken along line AA of FIG. 7(a). FIG. 8 is a side view showing the upper end of column 3. As shown in FIG.

The holder 1 of this embodiment has second engaging means 8 (FIG. 2) at the four corners of the plate member 4 so that the column 3 can be attached and detached. The second engaging means 8 includes claw portions 8A (FIGS. 2, 3, and 7) formed at the four corners of the plate member 4 and recessed portions 8B (FIGS. 2 and 7) formed at the upper end portion of each column 3. 7). The column 3 can be attached to the plate 4 by engaging the claw portion 8A of the plate 4 with the recess 8B of the column 3 . The column 3 can be removed from the plate member 4 by releasing the engagement between the recessed portion 8B and the claw portion 8A.

The claw portion 8A is formed by thinning a part of the side edge of the plate member 4. As shown in FIG. As shown in FIG. 7(b), the claw portion 8A is a thick-walled portion in which the distal end side 8Aa (outer side) bulges upward, and the thickness of the distal end side 8Aa (outer side) is the base end side 8Ab ( inside) thickness. As shown in FIG. 8, in the recess 8B of the plate member 4, the diameter of the entrance side 8Ba is smaller than the diameter of the back side 8Bb (specifically, the back side 8Bb of the recess 8B has a claw portion 8A A fitting portion 8Bb1 is formed to fit the tip end side 8Aa, and the diameter of the inlet side 8Ba is smaller than the diameter of the fitting portion 8Bb1). As a result, by fitting the distal end side 8Aa of the claw portion 8A into the deep side 8Bb of the recessed portion 8B (specifically, by fitting the distal end side 8Aa into the fitting portion 8Bb1), an unintended external force is applied to the holder. 1, the claw portion 8A is prevented from slipping out of the concave portion 8B. Therefore, the state where the column 3 is attached to the plate member 4 can be maintained.

Further, as shown in FIG. 8, since the back side 8Bb of the recessed portion 8B extends downward (specifically, in the back side 8Bb of the recessed portion 8B, the extending portion 8Bb2 extending downward from the fitting portion 8Bb1 is ), the entrance side 8Ba of the concave portion 8B can be easily widened when the claw portion 8A is inserted. Therefore, the claw portion 8A can be easily inserted into the concave portion 8B.

The shapes of the claws 7A and 8A and the recesses 7B and 8B can be changed in various ways as long as the column 3 can be attached to and detached from the base 2 and the plate member 4. FIG. For example, as shown in FIG. 9, the back side of the recessed portion 7B is composed only of a fitting portion 7Bb1 (a portion into which the tip side 7Aa of the claw portion 7A is fitted), and the back side of the recessed portion 8B is a fitting portion 8Bb1 (claw portion). It may be composed only of the portion where the tip end side 8Aa of 8A is fitted). This makes it difficult for the entrances of the recesses 7B and 8B to widen, so that the claws 7A and 8A are even more difficult to come off from the recesses 7B and 8B. Therefore, the state in which the column 3 is attached to the base 2 and the plate member 4 can be maintained more stably.

Further, the engaging means for attaching and detaching the column 3 to the base 2 and the plate member 4 is not limited to the claw portions 7A and 8A and the concave portions 7B and 8B. For example, the column 3 may be attached to the base 2 by engaging a projection protruding from one surface of the base 2 and the column 3 with a recess opening to the other surface. Alternatively, the column 3 may be attached to the plate member 4 by engaging a projection protruding from one surface of the plate member 4 and the column member 3 with a recess opening to the other surface. Even in the above manner, the column 3 can be removed from the plate member 4 and the base 2 by releasing the engagement between the projection and the recess. In the above case, it is preferable that the shape of the projection be thicker on the tip side than on the base end side, and the shape of the recess be such that the diameter on the back side is larger than the diameter on the inlet side. In this case, by engaging the tip side of the projection with the inner side of the recess, it is possible to prevent the projection from coming out of the recess when an unintended external force is applied.

As shown in FIGS. 1 and 3, the plate member 4 has a plurality of through-holes 9 formed in a square lattice. Each through-hole 9 is formed to allow the test tube S to pass through, and has a substantially circular shape. A hole 6 (FIGS. 1, 2, and 4) of the base 2 is formed at a position directly below each through hole 9, and the lower end of the test tube S passed through the through hole 9 is inserted into the hole 6. , the lower end of the test tube S can be fixed. Although the hole 6 is a hole penetrating the base 2 in the illustrated example, the hole 6 may be a recess that does not penetrate the base 2 . In this case, the bottom surface of the hole 6 (recess) is a curved surface corresponding to the lower end of the test tube S, for example. Also, the hole 6 is not necessarily required, and the hole 6 may be omitted (that is, the base 2 may not have the hole 6).

The pillars 3, the base 2, and the plate member 4 are formed using a thermoplastic resin or a thermosetting resin. The above thermoplastic resins include PP (polypropylene), ABS (acrylonitrile-butadiene-styrene), POM (polyacetal), PE (polyethylene), PA (polyamide, nylon), PS (polystyrene), PC (polycarbonate), PVC ( PVC), PET (polyethylene terephthalate), PPS (polyphenylene sulfide), PAR (polyarylate), PSF (polysulfone), PEEK (polyetheretherketone), PES (polyethersulfone), LCP (liquid crystal resin), norbornene resin , or fluorine resin. Said thermosetting resin is epoxy resin or urethane resin.

The base 2 and the pillars 3 are manufactured by, for example, NC cutting a material (bar or plate) made of thermoplastic resin or thermosetting resin (NC is an abbreviation for numerical control). If the base 2 is made of highly elastic PP, damage to the claw portion 7A can be prevented (for example, breakage of the claw portion 7A during insertion into the recess 7B can be prevented). The plate member 4 is manufactured by molding the above thermoplastic resin or thermosetting resin using a mold.

The holder 5 is provided to hold the test tube S passed through the through hole 9 of the plate member 4 . Four holders 5 are provided in each through-hole 9 of the plate member 4 (see FIGS. 1 to 3). Each holder 5 is suspended from the plate member 4 by connecting the upper end portion 10 to the outer edge of the through hole 9 and extends below the through hole 9 .

More specifically, in each through hole 9 , four enlarged diameter portions 90 ( FIG. 3 ) are formed at angular intervals of 90° in the circumferential direction of the through hole 9 . By joining the upper end portion 10 of the holder 5 to the outer edge of each of the four enlarged diameter portions 90, the four holders 5 are spaced apart by an angle of 90° in the circumferential direction of the through hole 9. is provided. Further, in plan view, the upper end portion 10 of each holding body 5 does not protrude inward in the radial direction of the through hole 9 from the range H of the enlarged diameter portion 90 (the range surrounded by the broken line in FIG. 3). The upper end 10 of each holder 5 does not interfere when the test tube S is passed through.

As is clear from FIGS. 2, 3, and 9, each holding body 5 has a part or the whole of the downwardly extending range of the through hole 9 extending radially inward of the through hole 9 downward. (In the holding body 5A described later, the entire downwardly extending range of the through hole 9 is inclined downward in the radial direction of the through hole 9. In the holding body 5B described later, A portion of the downwardly extending range of the through-hole 9, excluding a surface contact portion 23 described later, is inclined downward inward in the radial direction of the through-hole 9).

It should be noted that not only the portion of the holding member 5 that extends downward from the through hole 9 but also the portion positioned inside the through hole 9 may be inclined radially inward of the through hole 9 toward the lower side. . In this case, the inner surface of the through hole 9 is inclined radially inward toward the lower side with the same gradient as the inner surface of the holder 5 .

The holder 1 of this embodiment has a holder 5A and a holder 5B as the holder 5 described above. FIG. 10 is an enlarged cross-sectional view of the holder 5A, and FIG. 11 is an enlarged cross-sectional view of the holder 5B. 10 and 11 show a state in which the plate material 4 is cut along the vertical plane extending in the radial direction of the through hole 9. FIG.

The holding body 5A shown in FIG. 10 has a long vertical length and a gentle radially inward gradient. The holder 5B shown in FIG. 11 has a short vertical length and a steep radially inward gradient. When the through-holes 9 are arrayed in a square grid pattern (FIG. 3) and viewed as having rows in the horizontal direction and columns in the vertical direction, the through-holes 9A and 9D forming a row on one side in the horizontal direction are , four holding members 5A are provided. Four holders 5B are provided for each of the two rows of through holes 9B, 9C, 9E, and 9F on the other lateral side.

A bifurcated portion 20 is formed in each of the holders 5A and 5B. As shown in FIGS. 10 and 11, the bifurcated portion 20 has a U-shape, and the bifurcated portions 21 and 22 are spaced apart in the radial direction of the through hole 9 (hereinafter referred to as through hole 9). The radial direction of 9 is appropriately described as the radial direction).

A bifurcated portion 20 formed in the holders 5A and 5B has a U-shape opening downward and constitutes an upper end portion 10 of the holders 5A and 5B. Among the forks 21 and 22 forming the forked portion 20, the crotch 21 positioned radially outward is coupled to the outer edge of the through hole 9 in the plate member 4 (specifically, coupled to the outer edge of the enlarged diameter portion 90). is being used).

A surface contact portion 23 extending substantially vertically is formed on the holder 5B (FIGS. 2 and 11). The above-mentioned "substantially vertical direction" is a direction within ±20° with respect to the vertical direction (the direction of gravity). The surface contact portion 23 constitutes the lower end portion of the holder 5B, and is in surface contact with the test tube S by extending in a substantially vertical direction.

The holders 5A and 5B are made of a material containing at least one of PE (polyethylene), POM (polyacetal), and LCP (liquid crystal resin).

PE and POM have glass transition temperatures of around −125° C. and −50° C., respectively, which are very low. Therefore, if the holder 5 is formed using a material containing PE or POM, even if the holder 1 is placed at a low temperature (for example, −20° C. or lower), the holder 5 has physical properties in the rubber region and can be tested. An elastic force that holds down the tube S is produced.

Table 1 below shows the flexural modulus and flexural strength of LCP in a low temperature range (−40° C.) and a high temperature range (23° C.). Table 2 below shows the IZO intensity of LCP in the low temperature range (−40° C.) and the high temperature range (23° C.).

As is clear from Tables 1 and 2, LCP has a small difference between the values of flexural modulus, flexural strength and IZO impact strength in the high temperature range (23°C) and the low temperature range (-40°C). Therefore, if the holder 5 is formed using a material containing LCP, even if the holder 1 is placed at a low temperature, the holder 5 will hold down the test tube S with a large elastic force equivalent to that at a high temperature. becomes.

Note that the holder 5 may be manufactured from a material in which any one or more of PE, POM, and LCP are mixed (hereinafter referred to as a mixed material). Examples of mixed materials that can be used to manufacture the support 5 are described below.

The mixed material forming the holder 5 is, for example, 100 parts by weight of metallocene polyethylene as a main material, 0 to 100 parts by weight of a liquid crystal resin as an auxiliary material, and 0 to 60 parts by weight of low molecular weight polyethylene as an additive. shall contain. Metallocene polyethylene, which is the main material, has a uniform molecular weight distribution and high flexibility.

Alternatively, the mixed material forming the holder 5 contains 100 parts by weight of polyacetal as the main material, 0 to 100 parts by weight of the liquid crystal resin as the secondary material, and 0 to 60 parts by weight of the low molecular weight polyethylene as the additive. shall be

Alternatively, the mixed material forming the holder 5 contains 100 parts by weight of polyethylene as the main material, 0 to 100 parts by weight of the liquid crystal resin as the secondary material, and 0 to 60 parts by weight of the low molecular weight polyethylene as the additive. shall be

Alternatively, the mixed material forming the holder 5 is composed of 100 parts by weight of liquid crystal resin as the main material, 0 to 100 parts by weight of polyethylene or polyacetal as the secondary material, and 0 to 60 parts by weight of low molecular weight polyethylene as an additive. shall contain

According to the holder 1 of the present embodiment, the holder 5 is formed with the forked portion 20 including the two forks 21 and 22 spaced apart in the radial direction of the through hole 9 . Therefore, even at low temperatures, the holder 5 produces elastic force in the radial direction of the through hole 9 . Therefore, the holder 1 can reliably hold the test tube S passed through the through hole 9 even at low temperatures.

In addition, since the holder 5 is manufactured using PE/POM with a low glass transition temperature or LCP with a small difference in elasticity and strength between ° C. or below), the holder 5 generates an elastic force to hold the test tube S down. From this point as well, the holder 1 can reliably hold the test tube S at low temperatures.

Further, according to the present embodiment, the holder 1 can be disassembled because the column 3 is detachable from the base 2 and the plate member 4 . Therefore, cleaning of the holder 1 can be easily performed.

Furthermore, the holder 1 of the present embodiment has means (claws 7A, 8A and recesses 7B, 8B) for engaging the column 3 with the base 2 and the plate 4, so that it can be easily assembled without using metal parts such as screws. , the column body 3 can be detachably attached to the base 2 and the plate material 4. - 特許庁Therefore, the holder 1 is environmentally friendly. The present invention does not exclude the use of screws as a means for attaching the column 3 to the plate 4 or the base 2 . Even when screws are used, the holder 1 can be disassembled by making the column 3 detachable, so that the holder 1 can be easily cleaned.

In addition, the holder 1 of the present embodiment includes a holder 5A that is long in the vertical direction and has a gentle radially inward gradient, and a holding body 5A that is short in the vertical direction and has a steep radially inward gradient. By having the body 5B, it is possible to hold test tubes S of various lengths and test tubes S of various diameters (that is, the holding body 5A is suitable for holding a long and large-diameter test tube S, The holder 5B is suitable for holding a short, small-diameter test tube S).

Further, in the holder 1 of the present embodiment, the holders 5B provided in the through holes 9B, 9C, 9E, and 9F have the surface contact portions 23 that make surface contact with the test tubes S, so that the through holes 9B, 9C, The test tube S passed through 9E and 9F can be stably held. Further, according to the holders 5A provided in the through holes 9B, 9C, 9E, and 9F, the length in the vertical direction is long and the gradient is gentle, so that the long range of the holders 5A contacts the test tube S. Therefore, the holder 5A can hold the test tube S stably. Note that the holder 5A may be provided for all of the through holes 9A, 9B, 9C, 9D, 9E, and 9F. Or you may provide the holder 5B with respect to all the through-holes 9A, 9B, 9C, 9D, 9E, and 9F.

When the through-holes 9 are formed in a square lattice pattern as in the present embodiment, the shortest straight line connecting the center of one through-hole 9 and the center of the other through-hole 9 does not intersect. By connecting the upper end portion 10 of the holder 5 to the outer edge of the through hole 9, the size of the holder 1 can be reduced. A specific description will be given below with reference to FIG.

FIG. 12 shows a case where the vertical and horizontal pitches of the through-holes 9 arranged in a square lattice are equal. In this case, for example, in the through hole 9A of 1 row and 1 column, a straight line X1 connecting the center of the through hole 9A and the center of the through hole 9B of 1 row and 2 columns, or the center of the through hole 9A and the through hole of 2 rows and 1 column The straight line Y1 connecting the center of the hole 9D corresponds to the "shortest straight line". Therefore, the upper end portion 10 of the holder 5 is coupled to the outer edge of the through hole 9A that does not intersect the straight lines X1 and Y1.

If the horizontal pitch of the through-holes 9 is smaller than the vertical pitch, the straight line X1 connecting the center of the through-hole 9A and the center of the through-hole 9B is the shortest straight line. , and does not intersect the straight line X1, the upper end portion 10 of the holder 5 is coupled to the outer edge of the through hole 9A. Further, when the pitch in the vertical direction of the through holes 9 is smaller than the pitch in the horizontal direction, in the through holes 9A, the straight line Y1 connecting the center of the through holes 9A and the center of the through holes 9D is the "shortest straight line". The upper end portion 10 of the holder 5 is coupled to the outer edge of the corresponding through hole 9A that does not intersect the straight line Y1.

By adjusting the coupling position of the upper end portion 10 of the holder 5 as described above, even if the vertical and horizontal pitches of the through holes 9 are reduced, the two adjacent through holes 9, 9 can be provided with It is possible to avoid buffering between the holders 5 and 5 . Therefore, since the pitch of the through holes 9 can be kept small, the dimensions of the holder 1 can be kept small.

Still more preferably, as shown in FIG. 12, in two through holes 9, 9 having a positional relationship in which the rows and columns are shifted by one, a straight line Z connecting the centers of the two through holes 9, 9 and The upper end 10 of the holder 5 is connected to the outer edges of the intersecting through-holes 9 , 9 . For example, in the through holes 9A arranged in 1 row and 1 column and the through holes 9E arranged in 2 rows and 2 columns, the outer edge of the through holes 9A and 9E intersects the straight line Z1 connecting the centers of the through holes 9A and 9E. The upper ends 10 are joined. Further, in the through holes 9B arranged in 1 row and 2 columns and the through holes 9D arranged in 2 rows and 1 column, the outer edges of the through holes 9B and 9D intersect with the straight line Z2 connecting the centers of the through holes 9B and 9D. The upper ends 10 are joined. By doing so, the upper end portion 10 of the holder 5 is arranged at a position where a large interval between the through holes 9, 9 in the vertical and horizontal directions can be secured. Therefore, the pitch of the through holes 9 can be kept smaller.

The holder of the present invention is not limited to the examples shown in the above embodiments, and can be variously modified.

For example, the shape of the holder 5 is not limited to the shapes shown in FIGS. 10 and 11, and may be changed as shown in FIG. The holder 5C shown in FIG. 13 will be described below.

The holding body 5C shown in FIG. 13 is also suspended from the plate member 4 by connecting the upper end portion 10 to the outer edge of the through hole 9, and extends below the through hole 9. 10 and 11 in that they are configured by The bifurcated portion 30 has a U-shape opening upward, and has bifurcated portions 31 and 32 spaced apart in the radial direction of the through hole 9 . The crotch 32 located radially inward extends in a substantially vertical direction and constitutes a surface contact portion that is in surface contact with the test tube S. As shown in FIG. According to the holding body 5C, the bifurcated portion 40 generates an elastic force in the radial direction at a low temperature, and the crotch 32 (surface contact portion) is in surface contact with the test tube S, so that the test can be performed even at a low temperature. The tube S can be stably held.

10, 11, and 13 have one bifurcated portion, the holder 5 may be provided with a plurality of bifurcated portions.

For example, the holder 5 may have a bifurcated portion 20 (see FIG. 11) forming the upper end portion and a bifurcated portion 30 (see FIG. 13) forming the lower end portion.

Alternatively, the holder 5 may be modified as shown in FIG. A holder 5D shown in FIG. 14 has two bifurcated portions 40 and 50 at its lower end. The bifurcated portion 40 has a U-shape opening downward, and has a first crotch 41 and a second crotch 42 extending downward from the top of the U-shape. Among these crotches 41 and 42, the first crotch 41 positioned on the inner side in the radial direction extends in a substantially vertical direction and constitutes a surface contact portion that comes into surface contact with the test tube S. As shown in FIG. The bifurcated portion 50 has a U-shape opening upward, and is composed of the second crotch 42 and the third crotch 51 . The third crotch 51 extends upward and radially outward from the lower end (bottom of the U-shape) of the second crotch 42 . According to the holder 5D shown in FIG. Surface contact allows the test tube S to be stably held even at low temperatures.

Further, the holding body 5 may have a bifurcated portion 20 (see FIG. 11) forming the upper end portion and two bifurcated portions 40 and 50 (see FIG. 14) forming the lower end portion.

Further, in the holders 5A, 5B, 5C and 5D shown in FIGS. 10, 11, 13 and 14, the bifurcated portions 20, 30, 40 and 50 are opened upward or downward. The bifurcated portion provided in 5 may open horizontally, obliquely upward, or obliquely downward (that is, the bifurcated portion has bifurcations extending horizontally, obliquely upward, or obliquely downward. may be used). In this case as well, the two tines of the bifurcated portion are spaced apart in the radial direction of the through hole 9, so that the retainer 5 generates elastic force in the diametrical direction at low temperatures. Therefore, the test tube S can be held even at low temperatures.

Further, in the above example, the plurality of through holes 9 are formed in a square lattice pattern, but as shown in FIG. An upper end 10 of the retainer 5 may be coupled to the outer edge of each of 9 . Even in this case, the upper end of the holder 5 is attached to the outer edge of the through hole 9 that does not intersect the shortest straight line among the straight lines connecting the center of the through hole 9 and the center of the other through hole 9 . By connecting the portions 10, the size of the holder 1 can be kept small. A specific description will be given below with reference to FIG.

FIG. 15 shows a case where the horizontal pitch and the diagonal pitch of the houndstooth arrangement are equal. In this case, for example, for the through hole 9A of 1 row and 1 column, a straight line X1 connecting the center of the through hole 9A and the center of the through hole 9B of 1 row and 2 columns, or a straight line X1 connecting the center of the through hole 9A and 2 rows and 1 column The straight line X2 connecting the center of the through-hole 9D and the straight line X3 connecting the center of the through-hole 9A and the center of the through-hole 9E arranged in two rows and two columns correspond to the "shortest straight line". Therefore, the upper end portion 10 of the holder 5 is coupled to the outer edge of the through hole 9A that does not intersect the straight lines X1, X2, X3. Also, if the horizontal pitch of the through holes 9 is smaller than the diagonal pitch, the straight line X1 connecting the centers of the through holes 9A and 9B corresponds to the "shortest straight line" in the through hole 9A. , the upper end portion 10 of the holder 5 is coupled to the outer edge of the through hole 9A that does not intersect the straight line X1. Further, when the pitch in the diagonal direction of the through holes 9 is smaller than the pitch in the horizontal direction, the straight line X2 connecting the centers of the through holes 9A and 9D and the straight line X3 connecting the centers of the through holes 9A and 9E are arranged in the through hole 9A. corresponds to the "shortest straight line", and the upper end portion 10 of the holder 5 is coupled to the outer edge of the through hole 9A that does not intersect the straight lines X2 and X3.

By adjusting the coupling position of the upper end portion 10 of the holder 5 as described above, even if the arrangement pitch of the through-holes 9 in the vertical direction and the oblique direction is reduced, the two adjacent through-holes 9 and 9 can be provided with It is possible to avoid buffering between the holders 5 and 5 . Therefore, since the arrangement pitch of the through holes 9 can be kept small, the dimensions of the holder 1 can be kept small.

Still more preferably, as shown in FIG. 15, in the first through hole 9 of n rows and n columns, the second through hole 9 of n rows and n+1 columns, and the third through holes 9 of n+1 rows and n+1 columns, these The upper end portion 10 of the holder 5 is connected to a straight line connecting the center of each through hole 9 with the center of gravity of the triangle formed by connecting the centers of the through holes 9 , 9 , 9 . The center of gravity is the intersection of the three medians of the triangle (lines connecting the vertex and the midpoints of the sides facing it).

For example, through holes 9A (first through holes 9) arranged in one row and one column, through holes 9B (second through holes 9) arranged in one row and two columns, and through holes 9E (third through holes 9) arranged in two rows and two columns ), the center of gravity of the triangle formed by connecting the centers of these through holes 9A, 9B, and 9C is the point R shown in FIG.

In the through-hole 9A (first through-hole 9), the upper end portion of the holder 5 is positioned at the intersection of the first straight line P1 connecting the center of gravity R of the triangle and the center of the through-hole 9A and the outer edge of the through-hole 9A. 10 are combined. In addition, in the through hole 9B (second through hole 9), the upper end portion of the holder 5 is positioned at the intersection of the outer edge of the through hole 9B and the second straight line P2 connecting the center of gravity R of the triangle and the center of the through hole 9B. 10 are combined. In addition, in the through hole 9E (third through hole 9), the upper end portion of the holder 5 is positioned at the intersection of the outer edge of the through hole 9E and the third straight line P3 connecting the center of gravity R of the triangle and the center of the through hole 9E. 10 are combined.

By adjusting the coupling position of the upper end portion 10 of the holder 5 as described above, the pitch of the through holes 9 in the lateral direction and the oblique direction can be further reduced. Therefore, the dimensions of the holder 1 can be kept smaller.

Further, in the above-described embodiment, an example in which the through-hole 9 is circular is shown, but the shape of the through-hole 9 may be appropriately changed according to the cross-sectional shape of the test tube S. For example, the shape of the through hole 9 may be a rectangle (square or rectangle), a polygon other than a rectangle, or an ellipse. When the shape of the through hole 9 is rectangular or polygonal, the shape of the through hole 9 should be rectangular or polygonal with a circumscribed circle from the viewpoint of making it possible to reduce the size of the holder 1. is preferred. In this case, the circumcenter of the through hole 9 (the center of the circumscribed circle) corresponds to the center of the through hole 9 described above. When the shape of the through hole 9 is elliptical, the point where the major axis and the minor axis of the ellipse intersect corresponds to the center of the through hole 9 .

The number of through-holes 9 formed in the plate member 4 can also be set to any number according to the dimensions of the plate member 4 and the like. Furthermore, the number of holders 5 provided in each through-hole 9 is not limited to four shown in the embodiment. The number of holders 5 can be arbitrary plural or singular as long as the test tubes S can be held.

When a plurality of holders 5 are provided in the through hole 9 , it is preferable to provide the holders 5 at equal angular intervals in the circumferential direction of the through hole 9 . Further, when the number of holders 5 is singular, it is preferable to increase the length of the holders 5 in the circumferential direction of the through holes 9 (for example, the length of the holders 5 is half the circumference of the through holes 9). above is preferable). By doing so, the test tube S can be stably held.

10, 11, 13, and 14, the bifurcated portions 20, 30, 40, and 50 are U-shaped. The portion may be V-shaped. In addition, the above-mentioned bifurcated portions 20, 30, 40, and 50 are spaced apart in the "radial direction of the through hole 9". 9 in the "transverse direction". The "transverse direction of the through-hole 9" means not only "the radial direction of the through-hole 9" passing through the center of the through-hole 9, but also "the It also includes "a direction transverse to the hole 9". Even if the two forks of the forked part are spaced in the above "direction that crosses the through hole 9 without passing through the center of the through hole 9", an elastic force is generated in the transverse direction, so that the test can be performed at a low temperature. A tube S can be held.

When the holding body 5 is formed using PE, POM, or LCP, the holding body 5 may not have the bifurcated portion (the bifurcated portion may not be formed in the holding body 5). . Even in this case, the retainer 5 generates an elastic force from the material surface, so that the test tube S can be stably retained.

Further, when the holder 5 is formed with a bifurcated portion, the holder 5 generates an elastic force due to its structure. do not have. That is, the holder 5 may be made of a thermoplastic resin other than PE, POM, or LCP, or may be made of a thermosetting resin. Thermoplastic resins and thermosetting resins are mentioned as resins capable of forming the base 2, the pillars 3, and the plate members 4. As shown in FIG.

The material of the holder 5 preferably includes the material of the plate 4 (for example, when the plate 4 is made of PE, the holder 5 may be made of a material containing PE). preferable). This facilitates procurement and management of materials.

More preferably, the material of the plate member 4 and the material of the holder 5 are the same. By doing so, the difference in coefficient of linear expansion between the plate member 4 and the holder 5 can be kept small.

When the plate member 4 and the holding member 5 are formed from the same thermoplastic resin, for example, the following steps A, B, C, and D are sequentially performed to form the plate member 4 and the holding member 5. One piece is manufactured.

Step A: A metal mold having an internal space having a shape corresponding to the integrated body of the plate member 4 and the holder 5 is manufactured.
Step B: Injecting a thermoplastic resin in a molten state into the inner space of the mold (injection of the thermoplastic resin is performed under high pressure).
Step C: The thermoplastic resin is cooled and solidified to form an integral body of the plate member 4 and the holder 5 .
Step D: The plate material 4 and the holder 5 are removed from the mold.

Further, when the plate member 4 and the holder 5 are formed from the same thermosetting resin, the following steps E, F, G, and H are sequentially performed to form an integrated body of the plate member 4 and the holder 5. is manufactured.

Step E: A mold having an internal space having a shape corresponding to the integrated body of the plate member 4 and the holder 5 is manufactured from silicon.
Step F: Injecting a thermosetting resin into the interior space of the mold while vacuum degassing the interior space of the mold (for example, a liquid two-liquid curing resin such as urethane resin or epoxy resin is poured into the interior of the mold) inject into space).
Step G: By heating the mold, the thermoplastic resin is cured to form an integral body of the plate member 4 and the holder 5 .
Step H: The plate material 4 and the holder 5 integrally formed are demolded from the mold.

According to the manufacturing method including the above steps A to D and the manufacturing method including the above steps E to H, the plate member 4 and the holder 5 are integrated, so that the labor for manufacturing the holder can be reduced (for example, the plate member 4 Unlike the case where the holder 5 and the holder 5 are manufactured separately, there is no need to join the holder 5 to the plate member 4).

Furthermore, according to the manufacturing method comprising the above-described steps E to H, since silicon, which is the material of the mold, has high flexibility, the plate member 4 and the holder 5 can be separated from each other in the step H without damaging the bifurcated portion 20 and the like. One piece can be demolded.

Note that the plate member 4 and the holder 5 may be formed separately. In this case, a first mold having an inner space shaped to correspond to the plate member 4 and a second mold having an inner space shaped to correspond to the holder 5 are manufactured from silicon or metal. Then, the plate material 4 is molded using the first mold, the holding body 5 is molded using the second mold, and then the holding body 5 is joined to the outer edge of the through hole 9 in the plate material 4, An integral body of the plate material 4 and the holder 5 is obtained. When the plate member 4 and the holder 5 are manufactured as described above, the plate member 4 and the holder 5 can be made of different materials. In order to suppress this, the plate member 4 can be manufactured from a material that is cheaper than the material of the holder 5). The attachment of the holder 5 to the outer edge of the through hole 9 is performed by using an adhesive, heat welding, or the like, for example. Further, even when the plate member 4 and the holder 5 are formed separately as described above, in order to suppress the difference in linear expansion coefficient between the plate member 4 and the holder 5, the material of the plate member 4 and the material of the holder 5 should be may of course be the same.

Also, the base 2 is not necessarily required and may be omitted. In this case, the lower end of the column 3 rests on the support surface. Moreover, as long as the plate member 4 can be supported by the pillars 3, the number of the pillars 3 can be arbitrary plural or singular. Furthermore, the columnar body 3 is not necessarily required and may be omitted. In this case, when the holder 1 is used for storing and transporting the test tubes S, the plate member 4 is suspended from a wall or a pillar using a wire or the like, and the plate member 4 is kept in a substantially horizontal state.

Further, in the above-described embodiment, an example in which the holder of the present invention is used as a test tube rack is shown, but the application of the holder of the present invention is not limited to the test tube rack. The holder of the present invention is a holder that holds objects shown in the following (1) to (4), for example, by appropriately adjusting the dimensions and materials of the component parts (plate material, holder, column, base). can be used as
(1) Shafts installed in measuring jigs and processing jigs (2) Anchor bolts that constitute the foundation of a house (3) Umbrellas (4) Optical fibers (5) Plant stems

Reference Signs List 1 holder 2 base 3 column 4 plate 5, 5A, 5B, 5C, 5D holder 6 hole 7A claw (second claw)
7B recess (second recess)
7Ba fitting portion (second fitting portion)
7Bb extension (second extension)
8A claw portion (first claw portion)
8B recess (first recess)
8Ba fitting portion (first fitting portion)
8Bb extension (first extension)
9, 9A, 9B, 9C, 9D, 9E through hole 20 bifurcated portion (first bifurcated portion)
23 surface contact portion 30 bifurcated portion (second bifurcated portion)
40 bifurcated part (third bifurcated part)
50 bifurcated part (fourth bifurcated part)
90 Expanded diameter portion S Test tube

Claims (12)

A plate material having a through hole;
a holding body for holding an object to be held passed through the through hole,
The holding body is suspended from the plate material by coupling an upper end portion to the outer edge of the through hole, and extends below the through hole,
The holder has a U-shaped or V-shaped bifurcated portion, and the bifurcated portion is spaced apart in the transverse direction of the through hole,
The holding body has a first forked portion as the forked portion,
The first bifurcated portion has a U-shaped or V-shaped opening downward, constitutes an upper end portion of the holding body, and is the radial direction of the through hole of the bifurcated portion that constitutes the first bifurcated portion. an outer crotch is coupled to an outer edge of the through hole,
The attachment of the crotch located radially outside of the through-hole to the outer edge of the through-hole is realized by integral molding of the plate material and the holding body, the use of an adhesive, or heat welding. The holding body has a second forked portion as the forked portion,
2. The holder according to claim 1, wherein the second bifurcated portion has a U-shape or a V-shape that opens upward, and constitutes the lower end portion of the holder. 3. The test tube rack according to claim 1, wherein said holder has a plurality of said bifurcated portions. 4. The holder according to any one of claims 1 to 3, wherein the holder is made of a material containing any one of polyethylene, polyacetal, and liquid crystal resin. Materials forming the support include metallocene polyethylene, 0 to 100 parts by weight of liquid crystal resin with respect to 100 parts by weight of the metallocene polyethylene, and 0 to 60 parts by weight of low molecular weight polyethylene with respect to 100 parts by weight of the metallocene polyethylene. 5. The retainer of claim 4, comprising: The material forming the support includes polyacetal, 0 to 100 parts by weight of a liquid crystal resin with respect to 100 parts by weight of the polyacetal, and 0 to 60 parts by weight of low molecular weight polyethylene with respect to 100 parts by weight of the polyacetal. 5. The retainer according to claim 4. The material forming the support includes polyethylene, 0 to 100 parts by weight of liquid crystal resin with respect to 100 parts by weight of the polyethylene, and 0 to 60 parts by weight of low molecular weight polyethylene with respect to 100 parts by weight of the polyethylene. 5. The retainer according to claim 4. Materials for forming the holding body include liquid crystal resin, 0 to 100 parts by weight of polyethylene or polyacetal with respect to 100 parts by weight of the liquid crystal resin, and 0 to 60 parts by weight of low molecular weight polyethylene with respect to 100 parts by weight of the liquid crystal resin. 5. The retainer of claim 4, comprising: 9. The holder according to any one of claims 1 to 8, wherein the material of the holder includes the material of the plate. 10. The holder according to any one of claims 1 to 9, which is a test tube stand for holding a test tube as said object to be held. A method for manufacturing the holder according to claim 1,
a step of manufacturing from a metal a mold having an internal space having a shape corresponding to the integrated body of the plate material and the holding body;
injecting a thermoplastic resin in a molten state into the interior space of the mold;
a step of cooling and solidifying the thermoplastic resin to form an integrated body of the plate material and the holding body;
A method for manufacturing a holder, comprising a step of demolding an integrated body of the plate material and the holder from the mold. A method for manufacturing the holder according to claim 1,
a step of manufacturing from silicon a mold having an internal space having a shape corresponding to the integrated body of the plate material and the holding body;
A step of injecting a thermosetting resin into the internal space of the mold while vacuum degassing the internal space of the mold;
a step of curing the thermoplastic resin by heating the mold to form an integrated body of the plate material and the holding body;
A method for manufacturing a holder, comprising a step of demolding an integrated body of the plate material and the holder from the mold.

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