JP2000074730A - Electronic balance - Google Patents
Electronic balanceInfo
- Publication number
- JP2000074730A JP2000074730A JP10243916A JP24391698A JP2000074730A JP 2000074730 A JP2000074730 A JP 2000074730A JP 10243916 A JP10243916 A JP 10243916A JP 24391698 A JP24391698 A JP 24391698A JP 2000074730 A JP2000074730 A JP 2000074730A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- calibration
- contact member
- balance
- calibration weight
- 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.)
- Granted
Links
Landscapes
- Details Of Measuring And Other Instruments (AREA)
- Golf Clubs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、校正用分銅を内蔵
した電子天秤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic balance having a built-in calibration weight.
【０００２】[0002]
【従来の技術】従来より、電子天秤は、そのハウジング
内に電磁力平衡機構等の荷重センサを含む公知の荷重検
出機構が配設されており、この荷重検出機構は試料皿を
介して受感部材に作用する荷重を検出することができる
よう構成されている。2. Description of the Related Art Conventionally, an electronic balance is provided with a known load detecting mechanism including a load sensor such as an electromagnetic force equilibrium mechanism in a housing thereof. It is configured such that a load acting on the member can be detected.
【０００３】ところで、通常このような電子天秤、特に
精度の高い電子天秤では、温度変化に起因するスパン変
化による表示値の変化がよく見られ、一定の精度を維持
するためには、頻繁にスパン校正を必要とする。そこ
で、従来、この校正動作を容易にすることを目的とし
て、天秤筐体内に校正用の分銅とその加除機構を内蔵
し、別途校正用の基準分銅を用意することなく校正を可
能としていた。[0003] In such an electronic balance, in particular, a highly accurate electronic balance, a change in the displayed value due to a span change due to a temperature change is often seen, and in order to maintain a certain accuracy, the span value is frequently changed. Requires calibration. Therefore, conventionally, for the purpose of facilitating the calibration operation, a calibration weight and a mechanism for adding and removing the calibration weight are incorporated in the balance housing, so that calibration can be performed without separately preparing a calibration reference weight.
【０００４】この場合、内蔵分銅の加除機構としては、
前記分銅を１本もしくは複数本の上下移動棒を用いて上
下動を行わせることによって、荷重検出機構に対してそ
れを付加もしくは付加解除するよう構成するのが一般的
である。しかし、最近では、主に天秤自体の小形化やそ
の製造コストの低減などの観点から、前者の一本の上下
移動棒方式による分銅加除機構を採用した電子天秤が多
く利用されている。その例を図５に示す。In this case, the mechanism for adding and removing the internal weight is as follows.
Generally, the weight is moved up and down using one or a plurality of up and down moving rods, so that the weight is added to or released from the load detection mechanism. However, recently, mainly from the viewpoint of miniaturization of the balance itself and reduction of the manufacturing cost, an electronic balance employing the former one of the weight moving mechanisms by the vertically moving rod method has been widely used. An example is shown in FIG.
【０００５】図５において、受感部材３は、鉛直線に沿
って直立する部材であって、その上端部はハウジング１
の上面に穿たれた孔から外部に臨んでいる。そして、こ
の受感部材３の先端には試料皿２が支承される。受感部
材３の上端部近傍、例えば試料皿２の支承部位の直下に
は、カップ状の分銅受け８が形成されている。試料皿２
は、全体として円盤状をした一体形の皿であって、その
周縁部は下方に屈曲するとともに下面中央に受感部材３
の先端を嵌挿するための孔が形成されている。この試料
皿２の下面とハウジング１の上面との間の空間に、受感
部材３の軸心を中心とした円環状の校正用分銅４が配設
されている。そして、１本の上下移動棒５の上下動によ
り前記校正用分銅４が突き上げられるが、その際、校正
用分銅４はこの上下移動棒５と分銅当たり部材７とで確
実に挟持、固定することができ、それと同時に荷重検出
機構からの校正用分銅４の付加解除が行われるようにな
っている。このような構成においては、通常、分銅当た
り部材７は２か所に配設された支柱１３ａ及び１３ｂを
介してハウジング１に連接、固定する方式を採ってい
る。In FIG. 5, a sensing member 3 is a member that stands upright along a vertical line, and its upper end is formed of a housing 1.
It faces the outside from the hole drilled in the upper surface of the. The sample plate 2 is supported on the tip of the sensing member 3. A cup-shaped weight receiver 8 is formed near the upper end of the sensing member 3, for example, immediately below the support portion of the sample dish 2. Sample dish 2
Is an integral plate having a disk shape as a whole, the periphery of which is bent downward and the sensing member 3 is formed in the center of the lower surface.
A hole is formed for inserting the tip of the. In the space between the lower surface of the sample dish 2 and the upper surface of the housing 1, an annular calibration weight 4 centering on the axis of the sensing member 3 is provided. Then, the calibration weight 4 is pushed up by the vertical movement of one vertical movement rod 5. At this time, the calibration weight 4 must be securely sandwiched and fixed between the vertical movement rod 5 and the weight contact member 7. At the same time, the addition of the calibration weight 4 from the load detection mechanism is released. In such a configuration, the weight contact member 7 is usually connected to and fixed to the housing 1 via columns 13a and 13b provided at two locations.
【０００６】上記のような分銅突き上げタイプの内蔵分
銅を有する天秤においては、量産化時最も難しい課題の
一つとして、校正用分銅の下面４ａに当接する上下移動
棒５の高さの調整や分銅当たり部材７と校正用分銅４の
嵌合具合の調整などが挙げられる。これらの課題を解決
する方法として、従来では次の方法のいずれかが用いら
れてきた。すなわち、 ａ）突き上げ用の上下移動棒５として、長さの異なるも
のを何種類か用意しておき、都度現物合わせによる選別
を行う。 ｂ）図６に示すように突き上げ用の上下移動棒５自体に
伸縮機能を持たせる。すなわち、この上下移動棒５には
伸縮形上下移動棒Ｓが使用され、分銅押し上げ量の調節
を行う。具体的には、伸縮形上下移動棒Ｓは、例えば、
図６（ａ）のように、上下移動棒５を２分割し相互にね
じ止めするようにし、その間にスペーサＳ１を挿入して
その厚みを調節出来るようにするか、同図（ｂ）のよう
に、上下移動棒５の一端に調節用のねじＳ２を設けるよ
うにして構成される。 ｃ）分銅当たり部材７の位置を上下方向に変化できるよ
うにするか、或いは、分銅当たり部材７を弾性変形でき
るよう構成する。などである。One of the most difficult problems in mass production of a balance having a built-in weight of the above-described type is the adjustment of the height of the vertical moving rod 5 which abuts on the lower surface 4a of the calibration weight and the weight. Adjustment of the degree of fitting between the contact member 7 and the calibration weight 4 is exemplified. Conventionally, any of the following methods has been used to solve these problems. That is, a) Several types of up-and-down moving rods 5 having different lengths are prepared, and sorting is performed by matching the actual object each time. b) As shown in FIG. 6, the up-and-down moving rod 5 itself has a telescopic function. That is, a telescopic vertical moving bar S is used as the vertical moving bar 5 to adjust the amount of pushing up the weight. Specifically, the telescopic vertical moving bar S is, for example,
As shown in FIG. 6 (a), the vertical moving rod 5 is divided into two parts and screwed to each other, and the spacer S1 is inserted between them so that the thickness can be adjusted, or as shown in FIG. 6 (b). In addition, an adjustment screw S2 is provided at one end of the vertically moving rod 5. c) The position of the weight contact member 7 can be changed in the vertical direction, or the weight contact member 7 can be elastically deformed. And so on.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、前記従
来技術によるいずれの解決策においても、それぞれ、次
のような問題を有している。 ａ）長さの異なる棒の現物合わせでは、それらの逐次チ
ェックによる選別が必要で、組立や調整工数により時間
を要する。 ｂ）ネジやスペーサなどによる伸縮機構は、上下移動棒
自体の材料費や加工費などの面でコスト高となる。 ｃ）分銅当たり部材の位置の調節方法では、突き上げ棒
を動かすために必要なトルクが大きく変動し過ぎて、そ
の駆動源に問題を与える。また、前記部材そのものの弾
性材料化のみでは、前記トルクの問題に加えて同部材の
上下移動棒に対する最適な位置調整が極めて困難であ
る。However, each of the solutions according to the prior arts has the following problems. a) In the actual matching of rods having different lengths, sorting by successive checks is necessary, and it takes time due to the number of assembling and adjustment steps. b) The expansion and contraction mechanism using a screw, a spacer, or the like increases costs in terms of material costs and processing costs of the vertically moving rod itself. c) In the method of adjusting the position of the weight contacting member, the torque required to move the push-up bar fluctuates too much, causing a problem for the drive source thereof. Further, if only the member itself is made of an elastic material, in addition to the problem of the torque, it is extremely difficult to optimally adjust the position of the member with respect to the vertically moving rod.
【０００８】本発明は、前記諸問題を簡便な方法で一挙
に解決でき、かつ、校正用分銅の負荷もしくは負荷解除
などの動作も確実で耐久性ある分銅加除機構を提供でき
る電子天秤を提供することを目的としたものである。The present invention provides an electronic balance which can solve the above-mentioned problems at once with a simple method, and can provide a durable weight adding / removing mechanism which can reliably perform an operation such as loading or unloading of a calibration weight. It is intended for that purpose.
【０００９】[0009]
【課題を解決するための手段】本発明の電子天秤は、前
記諸課題を解決するために、校正用分銅をその上方にて
天秤ハウジング側に係架された分銅当たり部材に当接さ
せ固定保持させる天秤において、分銅当たり部材と天秤
ハウジング側との間に弾性材を介設させたもので、この
弾性材の弾性変形量により前記分銅当たり部材の校正用
分銅または上下移動棒に対する相対位置の調整が可能と
なる。In order to solve the above-mentioned problems, an electronic balance according to the present invention is arranged such that a calibration weight is brought into contact with a weight contacting member suspended on a balance housing side above the calibration weight and fixedly held. In the balance to be adjusted, an elastic material is interposed between the weight contact member and the balance housing side, and the relative position of the weight contact member with respect to the calibration weight or the vertical movement rod is adjusted by the amount of elastic deformation of the elastic material. Becomes possible.
【００１０】[0010]
【実施の形態】本発明の構成を、以下、図１から図４に
示す実施例に基づいて説明する。図１は、分銅当たり部
材７を２個の支柱１３で固定し、その一方の支柱１３ｂ
に固定ネジ１４による位置調節用弾性材１２を配設する
方式のもので、図は荷重検出機構部への分銅負荷解除の
状態を示す要部縦断面図であり、図２は、同じく荷重検
出機構部へ分銅を負荷したときの状態を説明するための
要部縦断面図、図３は、図１と図２の状態の中間に位置
する時の状態を説明するための要部縦断面図である。図
４は、ハウジング１そのものを利用して前記分銅当たり
部材７を２か所で固定し、うち１か所に固定ネジ１４に
よる位置調節用弾性材１２を配設する方式のもので、図
は荷重検出機構部への分銅負荷解除の状態を示す要部縦
断面図である。また、これらの図のうち図１及び図４
は、荷重検出機構の分銅受け８に対して校正用分銅４を
負荷していない状態、すなわち、天秤の通常の測定状態
を示すものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the embodiments shown in FIGS. FIG. 1 shows that the weight contact member 7 is fixed by two columns 13 and one of the columns 13b.
FIG. 2 is a longitudinal sectional view of a main part showing a state in which a weight load is released from a load detecting mechanism, and FIG. FIG. 3 is a vertical cross-sectional view of a main part for explaining a state when a weight is loaded on the mechanism part, and FIG. 3 is a vertical cross-sectional view of a main part for explaining a state when the weight is located between the states of FIGS. It is. FIG. 4 shows a method in which the weight contact member 7 is fixed at two places by using the housing 1 itself, and the position adjusting elastic member 12 by the fixing screw 14 is provided at one of the two places. It is a principal part longitudinal cross-sectional view which shows the state of the weight load release to a load detection mechanism part. 1 and 4 of these figures.
Indicates a state where the calibration weight 4 is not loaded on the weight receiver 8 of the load detecting mechanism, that is, a normal measurement state of the balance.
【００１１】ところで、図１に示すように、ハウジング
１の内部には、受感部材３から所定の距離を隔てて、す
なわち、校正用分銅４の中心から所定距離だけずれた位
置に、鉛直方向に変位自在の上下移動棒５が配設されて
いる。この上下移動棒５は、この上下移動棒５をその下
端において支承し、かつ、ハウジング１底面に沿って水
平方向に摺動自在のスライドカム６ａと、このスライド
カム６ａを摺動させるスライドカム摺動機構６、例えば
手動レバー或いはソレノイド等のアクチュエータ（図示
せず）からなるスライドカム摺動機構６によって、上下
方向に変位が与えられる。校正用分銅４の下面、上下移
動棒５の直上に対応する位置には、この上下移動棒５の
先端が入り込む程度の円錐状凹部４ａが形成されてい
る。ハウジング１の上方には、校正用分銅４の上面を覆
うように円環状の分銅当たり部材７が固着されている。As shown in FIG. 1, inside the housing 1, a predetermined distance from the sensing member 3, that is, a position deviated from the center of the calibration weight 4 by a predetermined distance, is set in a vertical direction. , A vertically movable rod 5 that can be displaced is provided. The vertical moving rod 5 supports the vertical moving rod 5 at its lower end, and is slidable in the horizontal direction along the bottom surface of the housing 1 and a slide cam slide that slides the slide cam 6a. The moving mechanism 6, for example, a slide cam sliding mechanism 6 including an actuator (not shown) such as a manual lever or a solenoid applies a displacement in the vertical direction. At the position corresponding to the lower surface of the calibration weight 4 and immediately above the vertically movable bar 5, a conical recess 4a is formed to the extent that the tip of the vertically movable bar 5 enters. An annular weight contact member 7 is fixed above the housing 1 so as to cover the upper surface of the calibration weight 4.
【００１２】この分銅当たり部材７は、その周縁部に下
方に開くテーパ面を有しており、このテーパ面と同等の
テーパ面が校正用分銅４の上部外縁部に形成されてい
る。また、この分銅当たり部材７は、ハウジング１上の
２か所に配設された支柱１３ａ及び１３ｂを介して天秤
筐体部に固定されるが、特に上下移動棒５の装着側とは
反対側に配設されている支柱１３ｂでは分銅当たり部材
７との間に弾性材１２を介在、狭着させ、固定ネジ１４
を用いて同弾性材１２自身の鉛直方向に関する厚み調整
が行えるよう構成されている。なお、図中９ａ及び９ｂ
は、ハウジング固定柱であり、図示の例ではハウジング
固定柱のうちの１本９ａを利用し、その下端をベース１
６に設けた案内孔１１内に挿入し、ベース１６の外側か
ら回転できるゆるみ防止ネジ１０を用いて、ハウジング
１の水平調整をも可能としている。The weight contacting member 7 has a tapered surface that opens downward at the peripheral edge thereof, and a tapered surface equivalent to the tapered surface is formed on the upper outer edge of the calibration weight 4. The weight contact member 7 is fixed to the balance housing via supporting columns 13a and 13b provided at two places on the housing 1. In particular, the side opposite to the mounting side of the vertically movable rod 5 is provided. The elastic member 12 is interposed between the support member 13b and the weight contact member 7, and is tightly attached to the support member 13b.
The thickness of the elastic member 12 itself in the vertical direction can be adjusted by using the same. 9a and 9b in FIG.
Is a housing fixing column. In the illustrated example, one of the housing fixing columns 9a is used, and the lower end thereof is a base 1.
The horizontal adjustment of the housing 1 is also possible by using a loosening prevention screw 10 which is inserted into a guide hole 11 provided in the base 6 and can be rotated from the outside of the base 16.
【００１３】以上の構成において、図１に示すようにス
ライドカム６ａが左方に移動して上下移動棒５が上限に
まで上昇しているときには、校正用分銅４はこの上下移
動棒５に円錐状凹部４ａを介して上方に押し上げられ、
その上面が分銅当たり部材７の下面全面に押し付けられ
る。この状態では、校正用分銅４は試料皿２、受感部材
３及び分銅受け８のいずれにも接触せずに、分銅当たり
部材７に形成されたテーパ面に校正用分銅４が嵌まり込
み、かつ、下面に形成された円錐状凹部４ａに上下移動
棒５が嵌まり込むことと併せて、外部からの多少の衝撃
に対してもずれることなく確実に固定される。In the above configuration, as shown in FIG. 1, when the slide cam 6a moves to the left and the vertical moving bar 5 is raised to the upper limit, the calibration weight 4 is conical to the vertical moving bar 5. Is pushed upward through the concave part 4a,
The upper surface is pressed against the entire lower surface of the weight contact member 7. In this state, the calibration weight 4 does not come into contact with any of the sample pan 2, the sensing member 3 and the weight receiver 8, and the calibration weight 4 fits into the tapered surface formed on the weight contact member 7, In addition to the fact that the vertical moving rod 5 is fitted into the conical concave portion 4a formed on the lower surface, the vertical moving rod 5 is securely fixed without being shifted even by a slight external impact.
【００１４】図２は、スライドカム６ａを図１の状態か
ら右方に移動させて上下移動棒５を下限まで下降させた
状態を示す図であり、校正用分銅４を荷重検出機構に負
荷した状態であり天秤の感度校正時にこの状態が選択さ
れる。すなわち、上下移動棒５を下降させると、校正用
分銅４もそれにつれて下降するが、校正用分銅４が上下
移動棒５との接触を解かれると分銅当たり部材７との接
触も解かれ、その全荷重が分銅受け８及び受感部材３を
介して荷重検出機構に伝達され、前記負荷状態となる。FIG. 2 is a view showing a state in which the slide cam 6a is moved rightward from the state shown in FIG. 1 to lower the vertical moving rod 5 to the lower limit. The calibration weight 4 is loaded on the load detecting mechanism. This state is selected when the sensitivity of the balance is calibrated. That is, when the vertically moving rod 5 is lowered, the calibration weight 4 is also lowered accordingly, but when the calibration weight 4 is released from the contact with the vertically movable rod 5, the contact with the weight contact member 7 is also released, and The entire load is transmitted to the load detection mechanism via the weight receiver 8 and the sensing member 3, and the load state is established.
【００１５】図３は、前記図２の状態から図１の状態へ
移行する時の中間の状態を示す図である。すなわち、こ
の図では、上下移動棒５がスライドカム６ａの稜線上を
滑動し、その先端は校正用分銅４の円錐状凹部４ａに嵌
まり込んで重心から所定距離だけ偏位した位置で校正用
分銅４を押上げるので、校正用分銅４は傾き図中Ａ点が
分銅当たり部材７と最初に当接することになる。この図
３の状態からさらに上下移動棒５が上昇すると、校正用
分銅４はＡ点を支点とし上下移動棒５の先端部を作用点
とする梃子運動によって、Ａ点と反対側の部分も上昇し
最終的にＢ点も分銅当たり部材７に当接して、図１のよ
うに校正用分銅４は分銅当たり部材７の下面全面に接触
して固定されることになる。FIG. 3 is a diagram showing an intermediate state when shifting from the state of FIG. 2 to the state of FIG. That is, in this figure, the vertical moving rod 5 slides on the ridge line of the slide cam 6a, and its tip is fitted into the conical concave portion 4a of the calibration weight 4 and deviated by a predetermined distance from the center of gravity for calibration. Since the weight 4 is pushed up, the calibration weight 4 first comes into contact with the weight contact member 7 at the point A in the tilt diagram. When the vertically moving rod 5 further rises from the state shown in FIG. 3, the calibration weight 4 is also raised by the lever movement using the point A as a fulcrum and the tip of the vertically moving rod 5 as an action point, and the portion opposite to the point A also rises. Finally, the point B also comes into contact with the weight contact member 7, and the calibration weight 4 comes into contact with the entire lower surface of the weight contact member 7 as shown in FIG.
【００１６】図４は、分銅当たり部材７を２か所で天秤
筐体部に連接、固定するためにハウジング１を利用した
場合の本発明の実施例を示すもので、その要部縦断面図
である。この実施例では、天秤筐体部を構成するハウジ
ング１上に分銅当たり部材７を連接、固定する２か所の
固定箇所を配設し、これら２か所の固定箇所のうち、上
下移動棒５が装着されている側の固定箇所では分銅当た
り部材７とハウジング１との間に固定スペーサ１５を介
在させた構造とし、一方上下移動棒５の装着側と反対側
に配設されている固定箇所では分銅当たり部材７とハウ
ジング１との間に弾性材１２を介在、狭着させ、固定ネ
ジ１４を用いて同弾性材１２自身の鉛直方向に関する厚
み調整が行えるよう構成されている。FIG. 4 shows an embodiment of the present invention in which the housing 1 is used to connect and fix the weight contact member 7 to the balance housing at two places. It is. In this embodiment, two fixing portions for connecting and fixing the weight contact member 7 are arranged on the housing 1 constituting the balance housing portion, and among these two fixing portions, the vertical moving rod 5 is provided. At the fixing point on the side where is mounted, a fixing spacer 15 is interposed between the weight contact member 7 and the housing 1, while the fixing point disposed on the side opposite to the mounting side of the vertical moving rod 5 In this configuration, the elastic member 12 is interposed between the weight contact member 7 and the housing 1 and is tightly attached thereto, and the thickness of the elastic member 12 itself can be adjusted in the vertical direction using the fixing screw 14.
【００１７】以上に詳述したように、本発明は、上下移
動棒５の装着側とは反対側の位置の支柱１３ｂに弾性材
１２を狭着し、その伸縮性（弾性変形量）を利用して鉛
直方向に関する厚み調整を可能とし、その機能を利用し
て上下移動棒５の突き上げ時における分銅当たり部材７
と上下移動棒５との相対位置の調節を可能とすることに
よって、上下移動棒５の突き上げ時における校正用分銅
４を固定する点を特徴とするものであるが、その構成に
ついては上記図示例に限定されない。例えば、前記実施
例において、分銅当たり部材７と支柱１３ａ及び支柱１
３ｂとの間の２か所の固定箇所のそれぞれに弾性材を介
在、狭着させる構造とすることによっても、本実施例と
ほぼ同様の効果を期待できる。もちろん、図示例のよう
に、支柱１３ｂの片方のみに弾性体１２を介在させる場
合は、他方が固定であることにより分銅当たり部材７の
固定が行いやすく、また、前記厚み調整も容易に行われ
る利点がある。また、分銅当たり部材７の形状や上下移
動棒５を上下させるスライドカム摺動機構６をスライド
カム６ａ以外のエクセンカムを利用できるなど、種々の
変形例を包含するものである。As described in detail above, in the present invention, the elastic material 12 is narrowly attached to the column 13b at the position opposite to the mounting side of the vertically moving rod 5, and its elasticity (the amount of elastic deformation) is used. To adjust the thickness in the vertical direction, and utilizing the function, the weight contact member 7 when the vertical moving rod 5 is pushed up.
Is characterized in that the calibration weight 4 is fixed when the vertical moving bar 5 is pushed up by allowing the relative position of the vertical moving bar 5 to be adjusted. It is not limited to. For example, in the above-described embodiment, the weight contact member 7, the support 13a, and the support 1
By adopting a structure in which an elastic material is interposed and tightly attached to each of the two fixed portions between the second and third members 3b, substantially the same effect as in the present embodiment can be expected. Of course, as in the illustrated example, when the elastic body 12 is interposed only in one of the columns 13b, the other member is fixed, so that the weight contact member 7 can be easily fixed, and the thickness adjustment can be easily performed. There are advantages. In addition, the slide cam sliding mechanism 6 for moving the weight moving member 5 up and down and the slide cam sliding mechanism 6 for moving the weight 5 can use an exen cam other than the slide cam 6a.
【００１８】[0018]
【発明の効果】本発明が提供する電子天秤は以上に詳述
したとおりであるから、１本の上下移動棒そのもので位
置の調節を行う従来技術の方式におけるような、長さの
異なる何種類かの上下移動棒からの最適上下移動棒の選
択や、伸縮機能を有する上下移動棒の製作の必要もな
く、従って組立や調整工数の軽減、或いは材料費や加工
費の節減が実現できる。また、分銅当たり部材そのもの
に位置の調節機能を持たせる従来技術の方式におけるよ
うな、上下移動棒の突き上げ時に生じるトルク変動も少
なくできるし、校正用分銅の負荷解除位置での保持動作
をも確実かつ安定にできる。Since the electronic balance provided by the present invention has been described in detail above, several types having different lengths as in the prior art system in which the position is adjusted by one vertical moving rod itself are used. There is no need to select an optimum vertical moving bar from the vertical moving bars or to manufacture a vertical moving bar having a telescopic function. Therefore, it is possible to reduce the number of assembling and adjusting steps, or to reduce the material cost and the processing cost. Also, as in the prior art method in which the weight contact member itself has a position adjusting function, the torque fluctuation generated when the vertical moving rod is pushed up can be reduced, and the holding operation of the calibration weight at the load release position can be reliably performed. And can be stabilized.
【００１９】本発明による上下移動棒の装着側とは反対
側の１か所にのみ弾性材の機能を持たせる方式は、構造
も簡単で、かつ、校正用分銅の負荷もしくは負荷解除な
どの動作も確実で耐久性のある分銅加除機構を提供する
ものである。従って、電子天秤の製造や提供にあたり、
トータルコストの面からは勿論耐久性の面でも輸送時や
長期間の使用に十分耐えられる利点をも有する。The method according to the present invention in which the function of the elastic material is provided only at one position opposite to the side on which the vertically movable rod is mounted is simple in structure and operates such as loading or unloading the calibration weight. It also provides a reliable and durable weight adding and removing mechanism. Therefore, in manufacturing and providing electronic balances,
In addition to the total cost, it also has the advantage of being durable enough to withstand transportation and long-term use.
【図１】本発明による電子天秤の荷重負荷解除時の構成
を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing the configuration of an electronic balance according to the present invention when a load is released.
【図２】本発明による電子天秤の構成で、荷重負荷時の
状態を示す縦断面図である。FIG. 2 is a vertical cross-sectional view showing a state of the electronic balance according to the present invention when a load is applied.
【図３】本発明による電子天秤の構成で、荷重負荷途上
時の状態を示す縦断面図である。FIG. 3 is a vertical cross-sectional view showing a state of the electronic balance according to the present invention when a load is being applied;
【図４】本発明による電子天秤の構成で、荷重負荷解除
時の状態を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing a state of the electronic balance according to the present invention when a load is released.
【図５】従来の電子天秤における構成を示す図である。FIG. 5 is a diagram showing a configuration of a conventional electronic balance.
【図６】従来技術による伸縮機能を有する上下移動棒を
示す図である。FIG. 6 is a view showing a vertically moving rod having a telescopic function according to the related art.
１………ハウジング ２………試料皿 ３………受感部材 ４………校正用分銅 ４ａ……円錐状凹部 ５………上下移動棒 ６………スライドカム摺動機構 ６ａ……スライドカム ７………分銅当たり部材 ８………分銅受け ９ａ……ハウジング固定柱 ９ｂ……ハウジング固定柱 １０……ゆるみ防止ネジ １１……案内孔 １２……弾性材 １３ａ…支柱 １３ｂ…支柱 １４……固定ネジ １５……固定スペーサ １６……ベース Ｓ………伸縮形上下移動棒 Ｓ１……スペーサ Ｓ２……ネジ DESCRIPTION OF SYMBOLS 1 ... Housing 2 ... Sample plate 3 ... Sensing member 4 ... Calibration weight 4a ... Conical recess 5 ... Vertical movement rod 6 ... Slide cam sliding mechanism 6a ... Slide cam 7: weight contact member 8: weight receiver 9a: housing fixing column 9b: housing fixing column 10: loosening prevention screw 11: guide hole 12: elastic material 13a: column 13b: column 14 …… Fixing screw 15 …… Fixing spacer 16 …… Base S …… Expansion type up / down moving rod S1 …… Spacer S2 …… Screw
Claims (1)
負荷解除を上下移動棒の上下動により行う分銅加除機構
を備え、前記負荷解除時は校正用分銅をその上方にて天
秤ハウジング側に係架された分銅当たり部材に当接させ
固定保持するようにした電子天秤において、分銅当たり
部材と天秤ハウジング側との間に弾性材を介設させ、前
記分銅当たり部材の前記校正用分銅または上下移動棒に
対する相対位置の調整を可能としたことを特徴とする電
子天秤。1. A weight adding / removing mechanism for loading and unloading a calibration weight onto a load detecting mechanism by vertically moving a vertically moving rod, and when releasing the load, the calibration weight is placed above the balance housing side. In an electronic balance that abuts against a weight contacting member that is suspended in an electronic balance, an elastic material is interposed between the weight contacting member and the balance housing side, and the calibration weight of the weight contacting member or An electronic balance characterized by being capable of adjusting a relative position with respect to a vertically moving rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24391698A JP3783423B2 (en) | 1998-08-28 | 1998-08-28 | electronic balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24391698A JP3783423B2 (en) | 1998-08-28 | 1998-08-28 | electronic balance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000074730A true JP2000074730A (en) | 2000-03-14 |
| JP3783423B2 JP3783423B2 (en) | 2006-06-07 |
Family
ID=17110930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24391698A Expired - Fee Related JP3783423B2 (en) | 1998-08-28 | 1998-08-28 | electronic balance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3783423B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7176389B2 (en) | 2003-06-25 | 2007-02-13 | Shimadzu Corporation | Electronic balance |
| JP2007047164A (en) * | 2005-08-10 | 2007-02-22 | Mettler-Toledo Ag | Calibrating weight device for electronic balance |
| CN110426107A (en) * | 2019-09-09 | 2019-11-08 | 苏州钮曼精密机电科技有限公司 | A kind of weighing device and weighing system |
| CN113984174A (en) * | 2021-10-25 | 2022-01-28 | 泰州赛宝工业技术研究院有限公司 | Large-scale opposite sex equipment weight measurement calibration comparison device and calibration comparison method |
-
1998
- 1998-08-28 JP JP24391698A patent/JP3783423B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7176389B2 (en) | 2003-06-25 | 2007-02-13 | Shimadzu Corporation | Electronic balance |
| JP2007047164A (en) * | 2005-08-10 | 2007-02-22 | Mettler-Toledo Ag | Calibrating weight device for electronic balance |
| CN110426107A (en) * | 2019-09-09 | 2019-11-08 | 苏州钮曼精密机电科技有限公司 | A kind of weighing device and weighing system |
| CN113984174A (en) * | 2021-10-25 | 2022-01-28 | 泰州赛宝工业技术研究院有限公司 | Large-scale opposite sex equipment weight measurement calibration comparison device and calibration comparison method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3783423B2 (en) | 2006-06-07 |
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