JPH0626826Y2 - Strain body - Google Patents
Strain bodyInfo
- Publication number
- JPH0626826Y2 JPH0626826Y2 JP13566488U JP13566488U JPH0626826Y2 JP H0626826 Y2 JPH0626826 Y2 JP H0626826Y2 JP 13566488 U JP13566488 U JP 13566488U JP 13566488 U JP13566488 U JP 13566488U JP H0626826 Y2 JPH0626826 Y2 JP H0626826Y2
- Authority
- JP
- Japan
- Prior art keywords
- base body
- holes
- strain gauge
- flexure element
- base
- 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 - Lifetime
Links
- 238000005259 measurement Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Measurement Of Force In General (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案は、荷重測定に用いられる所謂ワッシャ型の起歪
体に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a so-called washer-type strain element used for load measurement.
［従来の技術］ 従来、両側に掛かる圧縮測定するために、第３図に概略
を示すようにワッシャ型の起歪体１には一般に短円筒状
の金属体が使用され、その内側面及び外側面に歪ゲージ
２を貼り付けて使用するようになっている。[Prior Art] Conventionally, in order to measure compression applied to both sides, a short cylindrical metal body is generally used as a washer-type strain body 1 as schematically shown in FIG. The strain gauge 2 is attached to the side surface for use.
しかしながら、この従来の起歪体においては起歪体の両
側に大きな荷重が掛かると、起歪体１は第３図の点線又
は一点鎖線で示すように内側又は外側に膨出する傾向が
あり、歪ゲージ２による応力測定の再現性、直線性を阻
害する欠点がある。However, in this conventional flexure element, when a large load is applied to both sides of the flexure element, the flexure element 1 tends to bulge inward or outward as indicated by the dotted line or the alternate long and short dash line in FIG. There is a drawback that the reproducibility and linearity of stress measurement by the strain gauge 2 are impeded.
［考案の目的］ 本考案の目的は、上述の欠点を解消し、良好な再現性、
直線性が得られるワッシャ型の起歪体を提供することに
ある。[Object of the Invention] The object of the present invention is to solve the above-mentioned drawbacks and to achieve good reproducibility,
It is to provide a washer-type flexure element that can obtain linearity.
［考案の概要］ 上述の目的を達成するための本考案の要旨は、円筒状の
基体から成り、該基体の外側から内側に向けて２個で一
対となる複数対の透孔を穿孔すると共に、各対の透孔の
軸線を前記基体の中心線を挟む平行線とし、これらの透
孔に挟まれこれらの穿孔の内壁となる基体の一部に歪ゲ
ージ取付部を形成したことを特徴とする起歪体である。[Summary of the Invention] The gist of the present invention for achieving the above-mentioned object is to form a plurality of pairs of through-holes, each of which is composed of a cylindrical base, and two pairs are formed from the outside to the inside of the base. The axis of the through hole of each pair is a parallel line that sandwiches the center line of the base body, and the strain gauge mounting portion is formed in a part of the base body that is sandwiched between these through holes and serves as an inner wall of these perforations. It is a strainable body.
［考案の実施例］ 本考案を第１図、第２図に図示の実施例に基づいて詳細
に説明する。[Embodiment of the Invention] The present invention will be described in detail with reference to the embodiments shown in FIGS. 1 and 2.
本考案に係る起歪体は短円筒状の基体１１に、複数個の
例えば断面円形の透孔１２が基体１１の外側から基体１
１の内側に向けて貫通されている。そして、これらの透
孔１２は２個一対とされ、一対の透孔１２ａ、１２ｂの
軸線１２ａ′、１２ｂ′は基体１１の中心線Ｃを挟むよ
うに平行となっており、これらの一対の透孔１２ａ、１
２ｂによって挟まれた基体１１の一部は歪ゲージを貼り
付けるための平行な内面となっている。そして、更に第
２図の断面図に示すように、基体１１の内側及び外側に
は、必要に応じてリング状の切溝１３が形成されてい
る。The flexure element according to the present invention has a short cylindrical base body 11 and a plurality of through holes 12 having, for example, a circular cross section, provided from the outside of the base body 1
1 is penetrated toward the inside. The two through-holes 12 are paired, and the axes 12a 'and 12b' of the pair of through-holes 12a and 12b are parallel to each other so as to sandwich the center line C of the base body 11. Holes 12a, 1
A part of the base body 11 sandwiched by 2b is a parallel inner surface for attaching a strain gauge. Further, as shown in the sectional view of FIG. 2, ring-shaped kerfs 13 are formed on the inner side and the outer side of the base body 11 as needed.
本考案に係る起歪体は上述のような構成を有するので、
歪ゲージ１４は透孔１２内の基体１１の一部が平行とな
っている部分に貼り付けられる。従って、基体１１に圧
縮力又は引張力が加わり、基体１１が第３図の点線又は
一点鎖線で示すように内側又は外側に膨出したとして
も、透孔１２に挟まれ歪ゲージ１４が設けられた基体１
１の部分は、この膨出の影響を殆ど受けずに済むことに
なる。Since the flexure element according to the present invention has the configuration as described above,
The strain gauge 14 is attached to a portion of the through hole 12 where the base 11 is partially parallel. Therefore, even if a compressive force or a tensile force is applied to the base body 11 and the base body 11 bulges inward or outward as shown by the dotted line or the alternate long and short dash line in FIG. 3, the strain gauge 14 is provided between the through holes 12. Base 1
The portion 1 can be hardly affected by this bulging.
従って、再現性、直線性は従来の数分の１程度に向上す
ることになり、実験によってもそれは確認されている。
更に、基体１１の内外両側面に設けた切溝１３により、
基体１１に掛かる応力はその内側に集中され、再現性、
直線性は更に改善されることになる。Therefore, the reproducibility and linearity are improved to a fraction of the conventional values, which has been confirmed by experiments.
Further, by the cut grooves 13 provided on both inner and outer side surfaces of the base body 11,
The stress applied to the base body 11 is concentrated inside the base body 11, and the reproducibility,
The linearity will be further improved.
なお、実施例では透孔１２の断面を円形として説明した
が、これは例えば四角形等であってもよい。In addition, in the embodiment, the cross-section of the through hole 12 is described as a circle, but this may be, for example, a quadrangle or the like.
［考案の効果］ 以上説明したように本考案に係る起歪体は、基体に透孔
を設けてその内部に歪ゲージを貼り付ける部分を設ける
ことにより、従来の基体の内側面及び外側面に貼り付け
た場合に比較して再現性、直線性が大幅に向上すること
になる。[Advantages of the Invention] As described above, the strain-generating body according to the present invention has a through hole provided in the base body and a portion to which a strain gauge is attached. The reproducibility and linearity are greatly improved compared with the case of pasting.
図面第１図、第２図は本考案に係る起歪体の実施例を示
し、第１図は一部を断面とした平面図、第２図は縦断面
図であり、第３図は従来の起歪体の概略断面図である。 符号１１は基体、１２は透孔、１３は切溝、１４は歪ゲ
ージである。1 and 2 show an embodiment of a flexure element according to the present invention. FIG. 1 is a plan view with a part in section, FIG. 2 is a longitudinal section, and FIG. FIG. 3 is a schematic cross-sectional view of the flexure element of FIG. Reference numeral 11 is a base, 12 is a through hole, 13 is a cut groove, and 14 is a strain gauge.
Claims (1)
内側に向けて２個で一対となる複数対の透孔を穿孔する
と共に、各対の透孔の軸線を前記基体の中心線を挟む平
行線とし、これらの透孔に挟まれこれらの穿孔の内壁と
なる基体の一部に歪ゲージ取付部を形成したことを特徴
とする起歪体。1. A plurality of pairs of through-holes, each of which is composed of a cylindrical base body, are formed from the outside to the inside of the base body, and the axis line of each pair of the through-holes is the center line of the base body. A strain gauge attachment portion is formed on a part of a base body that is sandwiched by these through holes and is an inner wall of these perforations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13566488U JPH0626826Y2 (en) | 1988-10-17 | 1988-10-17 | Strain body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13566488U JPH0626826Y2 (en) | 1988-10-17 | 1988-10-17 | Strain body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0257038U JPH0257038U (en) | 1990-04-25 |
| JPH0626826Y2 true JPH0626826Y2 (en) | 1994-07-20 |
Family
ID=31395495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13566488U Expired - Lifetime JPH0626826Y2 (en) | 1988-10-17 | 1988-10-17 | Strain body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0626826Y2 (en) |
-
1988
- 1988-10-17 JP JP13566488U patent/JPH0626826Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0257038U (en) | 1990-04-25 |