JPH0141475Y2 - - Google Patents
Info
- Publication number
- JPH0141475Y2 JPH0141475Y2 JP7905884U JP7905884U JPH0141475Y2 JP H0141475 Y2 JPH0141475 Y2 JP H0141475Y2 JP 7905884 U JP7905884 U JP 7905884U JP 7905884 U JP7905884 U JP 7905884U JP H0141475 Y2 JPH0141475 Y2 JP H0141475Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipette
- piezoelectric vibrator
- pump
- sample liquid
- air hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000523 sample Substances 0.000 description 25
- 239000007788 liquid Substances 0.000 description 20
- 239000012528 membrane Substances 0.000 description 6
- 210000003811 finger Anatomy 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000007705 chemical test Methods 0.000 description 1
- 238000013098 chemical test method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- VJPLIHZPOJDHLB-UHFFFAOYSA-N lead titanium Chemical compound [Ti].[Pb] VJPLIHZPOJDHLB-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Devices For Use In Laboratory Experiments (AREA)
Description
【考案の詳細な説明】
〔考案の属する技術分野〕
本考案はサンプル容器よりサンプル液を吸入
し、一定量のサンプル液を試薬液の入れものに注
入して化学試験する時に使用するピペツトに係
り、特に小型軽量の圧電体振動子ポンプを用いて
サンプル容器よりサンプル液を自動吸入できるよ
うにしたピペツトに関する。[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to a pipette used when performing chemical tests by sucking a sample liquid from a sample container and injecting a certain amount of the sample liquid into a container containing a reagent liquid. In particular, the present invention relates to a pipette capable of automatically sucking a sample liquid from a sample container using a small and lightweight piezoelectric vibrator pump.
従来はサンプル容器内にガラス製ピペツトを差
込み、このピペツトの上端開口をくわえてサンプ
ル液を吸込むかまたはピペツトの上端開口に吸引
用ゴム袋を取り付け、このゴム袋を圧縮復元する
ことによりサンプル液を吸込むようにしている
が、前者は口中にサンプル液を吸込むおそれがあ
り、後者は極微少試薬の取扱いには適しない欠点
がある。
Conventionally, a glass pipette was inserted into the sample container and the top opening of the pipette was sucked in, or a rubber bag for suction was attached to the top opening of the pipette, and the rubber bag was compressed and restored to collect the sample liquid. However, the former has the disadvantage that there is a risk of inhaling the sample liquid into the mouth, and the latter is not suitable for handling extremely small reagents.
本考案は上記の欠点に鑑みてなされたものであ
つて、その目的とするところはピペツトに圧電体
振動子ポンプの吸込口を連結し、このポンプを駆
動することによりサンプル液を自動吸入でき、し
かも片手操作が容易で長寿命のピペツトを提供す
ることである。
The present invention was developed in view of the above-mentioned drawbacks, and its purpose is to connect the suction port of a piezoelectric vibrator pump to a pipette, and to automatically aspirate a sample liquid by driving this pump. Moreover, it is an object of the present invention to provide a pipette that is easy to operate with one hand and has a long life.
上記の目的を達成する本考案自動吸入ピペツト
は、図示のようにピペツト１に圧電体振動子ポン
プ２の吸込口を連結し、この圧電体振動子ポンプ
２を構成する圧電体振動子３の電極４，５間に交
流電圧を印加するための電源装置６の押釦型電源
スイツチ７とピペツト１に連通する大気孔８とを
近接配設してなる。
The automatic suction pipette of the present invention which achieves the above object has a pipette 1 connected to the suction port of a piezoelectric vibrator pump 2 as shown in the figure, and an electrode of a piezoelectric vibrator 3 constituting the piezoelectric vibrator pump 2. A push-button type power switch 7 of a power supply device 6 for applying an alternating voltage between pipettes 4 and 5 and an air hole 8 communicating with the pipette 1 are arranged in close proximity.
第１図は本考案自動吸入ピペツトの第１実施例
を示す断面図で、その構成を説明すると、１はガ
ラス製ピペツト、２はこのピペツト１に吸込口を
連結した圧電体振動子ポンプである。
FIG. 1 is a sectional view showing the first embodiment of the automatic suction pipette of the present invention. To explain its structure, 1 is a glass pipette, and 2 is a piezoelectric vibrator pump with a suction port connected to the pipette 1. .
この圧電体振動子ポンプ２は例えば平板状ケー
シング９の内側周面に圧電体振動子３の外周部を
密封支持し、この振動子３の一面に対向するケー
シング部に吸込通路１０及び吐出通路１１を設
け、この吸込通路１０及び吐出通路１１にそれぞ
れ吸込用、吐出用チエツク弁１２，１３を設ける
と共に、振動子３の他面に対向するケーシング部
に大気出入口１４を設けた構成になつている。 This piezoelectric vibrator pump 2 has, for example, an outer circumferential portion of a piezoelectric vibrator 3 sealed and supported on the inner circumferential surface of a flat casing 9, and a suction passage 10 and a discharge passage 11 are provided in the casing portion facing one surface of the vibrator 3. The suction passage 10 and the discharge passage 11 are provided with check valves 12 and 13 for suction and discharge, respectively, and an air inlet/outlet 14 is provided in the casing portion facing the other surface of the vibrator 3. .
圧電体振動子３はセラミツクス系、有機系の１
枚の膜状圧電体の両面に金属蒸着あるいは金属箔
を接着することにより膜状電極４，５を形成して
なる単層型のものであつてもよいが、２枚の膜状
圧電体を貼合わせ、その貼合わせ面及び両面に膜
状電極５，４を形成してなるバイモルフ型のもの
とすることが好ましく、特に有機系膜状圧電体を
用いて貼合わせ面の膜状電極にリン青銅薄板を挿
入接着した構造にするのが好ましい。 The piezoelectric vibrator 3 is made of ceramic type or organic type.
It may be a single-layer type in which the membrane electrodes 4 and 5 are formed by metal vapor deposition or adhering metal foil on both sides of a membrane piezoelectric body, but two membrane piezoelectric bodies may be used. It is preferable to use a bimorph type in which membrane electrodes 5 and 4 are formed on the bonded surface and both surfaces, and in particular, an organic membrane piezoelectric material is used to bond the membrane electrodes on the bonded surface. It is preferable to have a structure in which a thin bronze plate is inserted and bonded.
セラミツク系の圧電体としてはチタン酸バリウ
ム・チタン酸鉛、チタン酸鉛、ジルコン酸鉛、チ
タン・ジルコン酸系、ニオブ酸マグネシウム・チ
タンジルコン酸鉛等のものを用いることができ、
有機系の圧電体としてはPVDFの一軸延伸物、ポ
リアセタール、ポリアミド等の合成樹脂にセラミ
ツクス強誘電体の粉末を混練して成形したもの等
を用いることができる。 As ceramic piezoelectric materials, barium titanate/lead titanate, lead titanate, lead zirconate, titanium/zirconate, magnesium niobate/lead titanium zirconate, etc. can be used.
As the organic piezoelectric material, a material formed by kneading ceramic ferroelectric powder into a synthetic resin such as a uniaxially stretched product of PVDF or polyacetal or polyamide, etc. can be used.
また、圧電体振動子３の表面は保護と絶縁を兼
ねてエポキシ系塗料等の絶縁性塗料を塗布する等
して絶縁層を形成し、更に、その外面に、シリコ
ンゴム、ポリエチレン、ナイロン、ポリエステ
ル、フツソ系樹脂等の耐蝕性材料の膜体を接着す
るとよい。 Further, the surface of the piezoelectric vibrator 3 is coated with an insulating paint such as epoxy paint to form an insulating layer for both protection and insulation, and the outer surface is coated with silicone rubber, polyethylene, nylon, polyester, etc. It is preferable to adhere a film made of a corrosion-resistant material such as fluorocarbon resin or the like.
６は電源装置で、例えば電池１５と押釦型電源
スイツチ７と、直流電圧を交流電圧に変換する直
流−交流変換器１６とよりなる。この電源装置６
を構成する直流−交流変換器１６の出力は圧電体
振動子ポンプ２を構成する圧電体振動子３の電極
４，５に接続する。安価に実施できる商用電源装
置を用いてもよい。 Reference numeral 6 denotes a power supply device, which includes, for example, a battery 15, a push button type power switch 7, and a DC-AC converter 16 for converting DC voltage into AC voltage. This power supply device 6
The output of the DC-AC converter 16 constituting the piezoelectric vibrator pump 2 is connected to the electrodes 4 and 5 of the piezoelectric vibrator 3 constituting the piezoelectric vibrator pump 2. A commercial power supply device that can be implemented at low cost may also be used.
そして電源装置６の押釦型電源スイツチ７をピ
ペツト１に連通する大気孔８に近接配置する。 A push button type power switch 7 of the power supply device 6 is placed close to the air hole 8 communicating with the pipette 1.
第２図は第２実施例を示す断面図で、この第２
実施例は、第１実施例において圧電体振動子ポン
プ２、電源装置６及び大気孔８をピペツト本体１
７内に設け、このピペツト本体１７の上部に大気
孔８を開口させ、その近くに押釦型電源スイツチ
７の押釦７ａを外部へ突出させてなるものであ
る。 FIG. 2 is a sectional view showing the second embodiment.
In this embodiment, the piezoelectric vibrator pump 2, the power supply device 6, and the air hole 8 are connected to the pipette body 1 in the first embodiment.
7, an air hole 8 is opened in the upper part of the pipette main body 17, and a push button 7a of a push button type power switch 7 is made to protrude to the outside near the air hole 8.
第１実施例の場合はポンプ付きピペツト１を握
り、人差指で押釦７ａを押して電源スイツチ７を
閉じると同時に大気孔８を中指で塞ぎ、また第２
実施例の場合は第３図示のようにピペツト本体１
７の上部を握り、人差指で押釦７ａを押して電源
スイツチ７を閉じると同時に大気孔８を親指で塞
ぐと、電池１５の直流電圧が直流−交流変換器１
６に加わつて交流電圧に変換されこの交流電圧が
圧電体振動子３の電極４，５に加わつて該振動子
が振動せしめられる。この振動によりピペツト１
内の空気を吸込用チエツク弁１２を通して吸込
み、吸込んだ空気を吐出用チエツク弁１３を通し
て大気に吐出することによつてサンプル容器内の
サンプル液をピペツト１内に自動的に吸入する。
In the case of the first embodiment, grip the pipette 1 with a pump, press the push button 7a with your index finger to close the power switch 7, and at the same time close the air hole 8 with your middle finger.
In the case of the embodiment, the pipette body 1 is
7 and press the push button 7a with your index finger to close the power switch 7 and at the same time cover the air hole 8 with your thumb, the DC voltage of the battery 15 will be transferred to the DC-AC converter 1.
6 is converted into an alternating current voltage, and this alternating voltage is applied to the electrodes 4 and 5 of the piezoelectric vibrator 3 to cause the vibrator to vibrate. This vibration causes pipette 1 to
The sample liquid in the sample container is automatically aspirated into the pipette 1 by sucking in air through the suction check valve 12 and expelling the sucked air to the atmosphere through the discharge check valve 13.
一定量のサンプル液を吸入した後、押釦７ａを
これより指を離して復帰させて電源スイツチ７を
開くと、圧電体振動子ポンプ２が停止し、一定量
のサンプル液がピペツト１内に保持される。一定
量以上のサンプル液を吸入した時は大気孔８をこ
れより指を離して開放してサンプル液をサンプル
容器内に戻し、サンプル液の液量が一定量になつ
たとき、大気孔８を指で塞いで一定量のサンプル
液をピペツト１内に保持する。 After inhaling a certain amount of sample liquid, when the push button 7a is released and the power switch 7 is opened, the piezoelectric vibrator pump 2 stops and a certain amount of sample liquid is retained in the pipette 1. be done. When more than a certain amount of sample liquid has been inhaled, release the air hole 8 to open the sample liquid and return the sample liquid to the sample container. When the amount of sample liquid reaches a certain level, open the air hole 8. Hold a certain amount of sample liquid in the pipette 1 by closing it with your finger.
この状態でピペツト１をサンプル容器より引き
上げて試薬液の入れものの上方へ移し、大気孔８
をこれより指を離して開放することにより、サン
プル液を試薬液の入れのの中に滴下注入して化学
試験することができる。 In this state, lift the pipette 1 from the sample container and move it above the reagent container.
By removing your finger from the container and opening it, the sample solution can be dripped into the reagent solution container for chemical testing.
上述のように本考案によれば、ピペツト１に圧
電体振動子ポンプ２の吸込口を連結し、この圧電
体振動子ポンプ２を構成する圧電体振動子３の電
極４，５間に交流電圧を印加するための電源装置
６の押釦型電源スイツチ７とピペツト１に連通す
る大気孔８とを近接配設してなるので、大気孔８
を塞いだまま押釦７ａを押して電源スイツチ７を
閉じて圧電体振動子ポンプ２を駆動することによ
りサンプル液を自動吸入でき、サンプル液の吸入
後に押釦７ａを復帰させて電源スイツチ７を開き
圧電体振動子ポンプ２を停止させることによりサ
ンプル液を吸入状態に保持でき、また大気孔８を
開放することによりサンプル液を注出でき、しか
も小型軽量の圧電体振動子ポンプ２を用いている
ので、大気孔８の開閉操作と電源スイツチ７の押
釦操作を片手で容易にできる長寿命の自動吸入ピ
ペツトを提供することができる。更に静電容量液
位計等の簡単なレベル計を併設することにより一
定量のサンプル液を吸入したところでポンプ２を
自動停止することもできる。
As described above, according to the present invention, the suction port of the piezoelectric vibrator pump 2 is connected to the pipette 1, and an alternating current voltage is applied between the electrodes 4 and 5 of the piezoelectric vibrator 3 constituting the piezoelectric vibrator pump 2. The push-button power switch 7 of the power supply device 6 for applying
The sample liquid can be automatically aspirated by pressing the push button 7a with the button closed, closing the power switch 7, and driving the piezoelectric vibrator pump 2.After inhaling the sample liquid, the push button 7a is returned to open the power switch 7 and the piezoelectric transducer pump 2 is driven. By stopping the vibrator pump 2, the sample liquid can be held in the suction state, and by opening the air hole 8, the sample liquid can be poured out.Moreover, since the small and lightweight piezoelectric vibrator pump 2 is used, It is possible to provide a long-life automatic suction pipette that can easily open and close the air hole 8 and press the power switch 7 with one hand. Furthermore, by providing a simple level meter such as a capacitance level meter, the pump 2 can be automatically stopped when a certain amount of sample liquid has been sucked.
第１図は本考案自動吸入ピペツトの第１実施例
を示す断面図、第２図は同じく第２実施例を示す
断面図、第３図は第２実施例の使用状態を示す説
明図である。
１……ピペツト、２……圧電体振動子ポンプ、
３……圧電体振動子、４，５……電極、６……電
源装置、７……押釦型電源スイツチ、８……大気
孔。
Fig. 1 is a sectional view showing the first embodiment of the automatic suction pipette of the present invention, Fig. 2 is a sectional view showing the second embodiment, and Fig. 3 is an explanatory diagram showing the state of use of the second embodiment. . 1... Pipette, 2... Piezoelectric vibrator pump,
3... Piezoelectric vibrator, 4, 5... Electrode, 6... Power supply device, 7... Push button type power switch, 8... Air hole.
Claims (1)
し、この圧電体振動子ポンプを構成する圧電体振
動子の電極間に交流電圧を印加するための電源装
置の押釦型電源スイツチとピペツトに連通する大
気孔とを近接配設してなる自動吸入ピペツト。 The suction port of a piezoelectric vibrator pump is connected to the pipette, and the pipette is communicated with a push-button power switch of a power supply device for applying an alternating voltage between the electrodes of the piezoelectric vibrator constituting the piezoelectric vibrator pump. An automatic suction pipette with an air hole located close to the air hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7905884U JPS60189332U (en) | 1984-05-28 | 1984-05-28 | automatic suction pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7905884U JPS60189332U (en) | 1984-05-28 | 1984-05-28 | automatic suction pipette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60189332U JPS60189332U (en) | 1985-12-14 |
| JPH0141475Y2 true JPH0141475Y2 (en) | 1989-12-07 |
Family
ID=30623613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7905884U Granted JPS60189332U (en) | 1984-05-28 | 1984-05-28 | automatic suction pipette |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60189332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210154453A (en) * | 2020-06-12 | 2021-12-21 | 주식회사 톱텍 | High speed large volume Pipette Apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7317126B2 (en) * | 2019-09-03 | 2023-07-28 | 京セラ株式会社 | pipette |
-
1984
- 1984-05-28 JP JP7905884U patent/JPS60189332U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210154453A (en) * | 2020-06-12 | 2021-12-21 | 주식회사 톱텍 | High speed large volume Pipette Apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60189332U (en) | 1985-12-14 |
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