【０００１】[0001]
【発明の属する技術分野】本発明は、取付機器とくにモ
ータやロボット等の小形の機器を取り付ける場合の締め
付け圧力を検出する締め付け圧力検出方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening pressure detecting method for detecting a tightening pressure when a small device such as a motor or a robot is mounted.
【０００２】[0002]
【従来の技術】従来、ねじの締め付け圧などを検出する
ため、トルクレンチを使用したり、目視により確認する
ものとして、圧力を受けることによって変色あるいは発
色するプレスケール（商品名）などの感圧シートが用い
られている。また、特開平１０−２７４２２５号には、
図５に示すように、２枚の平座金１１、１２の間に表示
部１３たとえば着色されたシリコンゴムなどの軟質材を
介在させ、この座金をボルト１４と被締付締体１５の間
に挿入し、ボルト１４の締め付けにより表示部１３が座
金からはみ出し、はみ出し部分１６を形成させるように
した締め付け表示体が提案されている。2. Description of the Related Art Conventionally, a torque wrench has been used to detect the tightening pressure of a screw or the like, and a pressure-sensitive material such as a prescale (trade name) that changes color or develops color when subjected to pressure has been used for visual confirmation. Sheets are used. Also, JP-A-10-274225 discloses that
As shown in FIG. 5, a display unit 13 such as a soft material such as colored silicone rubber is interposed between the two flat washers 11 and 12, and the washer is placed between the bolt 14 and the tightened body 15. There has been proposed a tightened display body in which the display portion 13 is inserted from the washer by tightening the bolt 14 to form the protruding portion 16.
【０００３】[0003]
【発明が解決しようとする課題】しかるに、トルクレン
チでは、ボルトのねじ込み力を検出することができるが
実際に取付機器の接触部分の圧力がどの程度の締め付け
圧力になっているかを表示するものではない。また、感
圧シートを挟んで変色させるものでは、感圧シートが薄
く、挟まれた部分だけが変色するので、外側から変色部
分が見え難く、プラスティックなどの透明ワッシャを使
用すると破損し易い問題がある。このため、感圧シート
を挟んで一度締め付けた後に、ボルトを緩めて変色を確
認し、元の状態に締め付けるようにしているが、作業に
手数を要し、締め付け状態が変化するおそれがあるだけ
でなく取付作業時間も長くなるなどの欠点があった。However, the torque wrench can detect the screwing force of the bolt, but does not indicate the tightening pressure of the contact portion of the mounting device. Absent. Also, in the case of discoloring with the pressure-sensitive sheet sandwiched, the pressure-sensitive sheet is thin, and only the sandwiched part discolors, so it is difficult to see the discolored part from the outside, and there is a problem that it is easily damaged when using a transparent washer such as plastic. is there. For this reason, after tightening the pressure-sensitive sheet once, loosen the bolt to check the discoloration and tighten it to the original state, but it takes time and effort to work, and there is a possibility that the tightening state may change In addition, there was a disadvantage that the installation work time was increased.
【０００４】また、平座金の間に表示部を挟んだ締め付
け表示体をボルトと被締め付け体との間に挿入し、締め
付けによる表示部のはみ出しを目視するものでは、座金
にかかるボルトの締め付け圧力を確認することはできる
が、このボルトにより取り付けられた機器の接触部分全
体の締め付け状態が、どのような圧力になっているかを
確認するものではなかった。Further, when a tightening display body having a display section sandwiched between flat washers is inserted between a bolt and a body to be tightened, and the protrusion of the display section due to tightening is visually observed, the tightening pressure of the bolt applied to the washer is required. However, it did not confirm what kind of pressure the tightened state of the entire contact portion of the equipment attached with the bolt was.
【０００５】本発明は、上述の欠点を無くし、取付機器
と設置面との間の締め付け圧力を外部から容易に確認で
き、取付機器の締め付け状態を確実に検出できるように
した検出方法を提供する。The present invention provides a detection method which eliminates the above-mentioned disadvantages, makes it possible to easily confirm the tightening pressure between the mounting device and the installation surface from the outside, and reliably detects the tightening state of the mounting device. .
【０００６】[0006]
【課題を解決するための手段】このため、圧力を受けて
変色（発色を含む）する感圧シートを、弾性板の表面に
一体に設けた圧力検出シートをそなえ、取付機器と設置
面の間に前記の圧力検出シートを取付機器と設置面との
接触部から外周にはみ出させるように挿入し、締め付け
圧力により弾性板を圧縮してはみ出し部に変形を生じさ
せ、この変形部における感圧シートの変色を目視あるい
はセンサーで確認して締め付け圧力を検出するようにし
ている。なお、圧力検出シートは、圧力を受けないとき
に透明な感圧シートを使用し、低い圧力で変色する感圧
シートを下層にし、高い圧力で変色する感圧シートを上
層にして弾性板の表面に一体に設けたものでもよい。For this purpose, a pressure-sensitive sheet that changes color (including color) by receiving a pressure is provided with a pressure detection sheet integrally provided on the surface of the elastic plate, and is provided between the mounting device and the installation surface. The pressure detection sheet is inserted so as to protrude from the contact portion between the mounting device and the installation surface to the outer periphery, and the elastic plate is compressed by the tightening pressure to cause deformation of the protruding portion. The tightening pressure is detected by visually checking the discoloration or by a sensor. The pressure detection sheet uses a transparent pressure-sensitive sheet when it is not subjected to pressure, the lower layer is a pressure-sensitive sheet that changes color at low pressure, and the upper layer is a pressure-sensitive sheet that changes color at high pressure. May be provided integrally.
【０００７】[0007]
【発明の実施の形態】圧力検出シートは、圧力によって
変色あるいは発色する感圧シートとゴム板などの弾性板
を重ねて接着や、塗布などで一体に形成している。な
お、感圧シートは圧力によって変色の程度が次第に、ま
たは段階的に変わるものを用いるのが好ましいが、圧力
を受けないときは透明で、異なる圧力でそれぞれ発色す
るシートを複数層に重ねたものでもよい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pressure detecting sheet is formed by laminating a pressure-sensitive sheet which changes color or develops color under pressure and an elastic plate such as a rubber plate by gluing or coating. In addition, it is preferable to use a pressure-sensitive sheet in which the degree of discoloration gradually or stepwise changes depending on the pressure, but when no pressure is applied, the sheet is transparent, and is formed by stacking a plurality of sheets each of which develops a color at a different pressure. May be.
【０００８】この圧力検出シートを、取付機器の外周縁
からはみ出すように取付機器の取付面より幾分大きくし
て、取付機器と設置面の間に、取付機器の取付面と設置
面との広い方に弾性板を接触させ、小さい方の外周縁か
ら圧力検出シートの感圧シートがはみ出すように挿入し
て締め付けを行う。締め付け圧力によって、取付機器の
取付面に接触している部分の弾性板が圧縮されるが、は
み出し部には圧縮力が加わらないので、はみ出し部分の
弾性板が膨れて変形し、その応力で感圧シートを変色あ
るいは発色させ、この変色あるいは発色は取付機器の外
側になるため目視や光センサーによって確認でき、変色
の程度によって取付機器と設置面との圧力を検出するこ
とができる。The pressure detecting sheet is made slightly larger than the mounting surface of the mounting device so as to protrude from the outer peripheral edge of the mounting device, and the space between the mounting surface and the mounting surface of the mounting device is wide between the mounting device and the mounting surface. The pressure sensing sheet of the pressure detection sheet protrudes from the smaller outer peripheral edge of the elastic plate, and is tightened. The elastic plate at the portion in contact with the mounting surface of the mounting equipment is compressed by the tightening pressure, but the compressive force is not applied to the protruding part. The pressure sheet is discolored or colored, and the discoloration or coloring can be confirmed visually or by an optical sensor because it is outside the mounting device, and the pressure between the mounting device and the installation surface can be detected based on the degree of discoloration.
【０００９】[0009]
【実施例】これを図に示す実施例について詳述する。図
３は、圧力検出シート１の例を示す側面図で、２は圧力
を受けると圧力の程度により次第に変色する感圧シー
ト、３は適当な厚さをもったゴム板などの弾性板で、感
圧シート２と弾性板３は、たとえば接着あるいは感圧シ
ート材を弾性板の表面に塗布するなどの方法で一体化さ
せている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 3 is a side view showing an example of the pressure detection sheet 1. Reference numeral 2 denotes a pressure-sensitive sheet that changes color gradually according to the degree of pressure when pressure is applied. Reference numeral 3 denotes an elastic plate such as a rubber plate having an appropriate thickness. The pressure-sensitive sheet 2 and the elastic plate 3 are integrated by, for example, bonding or applying a pressure-sensitive sheet material to the surface of the elastic plate.
【００１０】図１および図２は、前述の圧力検出シート
１を用いて取付機器４を設置面５に取り付ける状態を示
す側断面図で、図１はボルト６を締め付ける前の状態
を、図２は締め付けた後の状態をそれぞれ示しており、
説明のため圧力検出シート１を誇大に示している。取付
機器４は設置面５に圧力検出シート１を介して載置し、
数箇所でボルト６により締め付けて取り付けられる。前
記圧力検出シート１は、図１のように取付機器４の取付
面が設置面より小さいときは、弾性板３を広い設置面５
に接触させ、感圧シート２が取付機器４に接触するよう
に挿入され、取付機器４の外周にはみ出し部７を形成さ
せている。なお、はみ出し部７は、実際には２〜５ｍｍ
程度あれば十分である。FIGS. 1 and 2 are side sectional views showing a state in which the mounting device 4 is mounted on the installation surface 5 using the above-described pressure detecting sheet 1. FIG. 1 shows a state before the bolt 6 is tightened. Indicates the state after tightening, respectively.
The pressure detection sheet 1 is exaggerated for explanation. The mounting device 4 is placed on the installation surface 5 via the pressure detection sheet 1,
It is fastened at several places by bolts 6 and attached. When the mounting surface of the mounting device 4 is smaller than the installation surface as shown in FIG.
, And the pressure-sensitive sheet 2 is inserted so as to come into contact with the mounting device 4, and a protrusion 7 is formed on the outer periphery of the mounting device 4. In addition, the protruding part 7 is actually 2 to 5 mm.
A degree is enough.
【００１１】図１の状態では、ボルト６を締め付けてお
らないため、感圧シート２が変色していない。図２のよ
うにボルト６を締め付けると、取付機器４の取付面に接
触している部分の圧力検出シート１が圧縮されて感圧シ
ート２が変色するとともに弾性板３が圧縮され、はみ出
し部７には圧縮力が加わらないので、このはみ出し部７
の弾性板３が内側の圧縮にともなって変形して膨れ、そ
の応力で感圧シート２の取付機器外周縁部分が網目で示
すように変色する。この変色部８は取付機器４の周縁か
ら外側にはみ出しているので、外側から確実に目視ある
いは光センサーで確認ができ、あらかじめ把握しておい
た圧力と変色の度合いの関係により確認された変色の度
合いと比較して圧力を検出する。したがって、取付機器
４を囲むはみ出し部７における感圧シート２の変色が、
全周で所定の色と同じ程度になるように、それぞれのボ
ルト６を締め付けることにより、取付機器４を均一な圧
力で設置面５に取り付けることができ、その締め付け圧
力を感圧シート２の変色でチェックすることができる。In the state shown in FIG. 1, since the bolts 6 are not tightened, the pressure-sensitive sheet 2 is not discolored. When the bolt 6 is tightened as shown in FIG. 2, the pressure detection sheet 1 at the portion in contact with the mounting surface of the mounting device 4 is compressed, the color of the pressure-sensitive sheet 2 is changed, and the elastic plate 3 is compressed. Since no compressive force is applied to the
The elastic plate 3 is deformed and swells due to the inner compression, and the stress causes the outer peripheral edge of the mounting device of the pressure-sensitive sheet 2 to change color as shown by a mesh. Since the discoloration portion 8 protrudes outward from the peripheral edge of the mounting device 4, it can be surely confirmed from the outside visually or by an optical sensor. The pressure is detected in comparison with the degree. Therefore, the discoloration of the pressure-sensitive sheet 2 in the protruding portion 7 surrounding the attachment device 4 is as follows.
By tightening the respective bolts 6 so as to have the same color as the predetermined color over the entire circumference, the mounting device 4 can be mounted on the installation surface 5 with a uniform pressure, and the tightening pressure is changed to a color change of the pressure-sensitive sheet 2. You can check with
【００１２】なお、圧力検出シート１の感圧シート２
は、図４に示すように圧力を加えないときは透明なシー
トを用い、弾性板３に近い下層に低い圧力で発色または
変色する感圧シート２ａを、上層に高い圧力で発色また
は変色する感圧シート２ｂを重ねて構成し、圧力による
変化を各層の変化で検出するようにしてもよい。また、
取付面が大きいときは、圧力検出シート１の中央部分を
省くようにしてもよい。The pressure-sensitive sheet 2 of the pressure detecting sheet 1
As shown in FIG. 4, when a pressure is not applied, a transparent sheet is used, and a pressure-sensitive sheet 2a that develops or discolors at a low pressure in a lower layer near the elastic plate 3 and a sensor that develops or discolors at a high pressure on an upper layer. The pressure sheet 2b may be configured to overlap, and a change due to pressure may be detected by a change in each layer. Also,
When the mounting surface is large, the central portion of the pressure detection sheet 1 may be omitted.
【００１３】[0013]
【発明の効果】このように本発明は、感圧シートを弾性
板の表面に一体に設けた圧力検出シートを、取付機器と
設置面の間に接触部の外周からはみ出すように挿入し、
締め付け圧力によるはみ出し部の感圧シートの変色を確
認して締め付け圧力を検出するようにしているので、ボ
ルト部分の締め付け圧力だけでなく、取付機器全体の締
め付け圧力を検出することができ、取付機器の外側で変
色を確認できるので目視が容易で、締め付けを緩めるな
どの手数を必要とせずに迅速確実に締め付け圧力の検出
を行い得る効果が得られる。また、取付機器の外周全面
で確認できるので片締めを防止でき、弾性板による防振
効果が得られ、機器のがたつきやボルトのゆるみを防
ぎ、取り付けを確実にすることかできる。As described above, according to the present invention, the pressure detecting sheet having the pressure sensitive sheet integrally provided on the surface of the elastic plate is inserted between the mounting device and the mounting surface so as to protrude from the outer periphery of the contact portion,
Since the discoloration of the pressure-sensitive sheet at the protruding part due to the tightening pressure is checked and the tightening pressure is detected, not only the tightening pressure of the bolt part but also the tightening pressure of the entire mounting equipment can be detected, and the mounting equipment can be detected. Since the discoloration can be confirmed on the outside, visual observation is easy, and the effect of quickly and surely detecting the tightening pressure without the need for labor such as loosening the tightening can be obtained. In addition, since it can be checked on the entire outer periphery of the mounting device, one-sided tightening can be prevented, the vibration-proof effect by the elastic plate can be obtained, and rattling of the device and loosening of bolts can be prevented, and mounting can be ensured.
【００１４】なお、圧力検出シートに、圧力を受けない
ときに透明な感圧シートを用い、低い圧力で変色する感
圧シートを下層にし、高い圧力で変色する感圧シートを
上層にして弾性板の表面に一体に設けるようにすれば、
一定の圧力範囲で締め付けを行う場合の確認を容易にす
ることができる。The pressure detecting sheet is a pressure-sensitive sheet that is transparent when no pressure is applied. The pressure-sensitive sheet that changes color at low pressure is used as the lower layer, and the pressure-sensitive sheet that changes color at high pressure is used as the upper layer. If they are provided integrally on the surface of
It is possible to easily confirm when tightening is performed in a certain pressure range.
【図１】本発明の実施例を示す一部の側断面図で、締め
付け前の状態を示している。FIG. 1 is a partial side sectional view showing an embodiment of the present invention, showing a state before tightening.
【図２】図１の実施例における締め付け後の状態を示す
側断面図である。FIG. 2 is a side sectional view showing a state after tightening in the embodiment of FIG. 1;
【図３】本発明における圧力検出シートの実施例を示す
側面図である。FIG. 3 is a side view showing an embodiment of the pressure detection sheet according to the present invention.
【図４】別の圧力検出シートの実施例を示す側面図であ
る。FIG. 4 is a side view showing an example of another pressure detection sheet.
【図５】従来の例を示す側断面図である。FIG. 5 is a side sectional view showing a conventional example.
１ 圧力検出シート ２ 感圧シート ３ 弾性板 ４ 取付機器 ５ 設置面 ６ ボルト ７ はみ出し部 ８ 変色部 DESCRIPTION OF SYMBOLS 1 Pressure detection sheet 2 Pressure-sensitive sheet 3 Elastic plate 4 Mounting device 5 Installation surface 6 Bolt 7 Protruding part 8 Discoloration part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宮河 秀和 福岡県北九州市八幡西区黒崎城石２番１号 株式会社安川電機内 Ｆターム(参考） 2F051 AB03 BA07 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidekazu Miyakawa 2-1 Kurosaki Castle Stone, Yawatanishi-ku, Kitakyushu-shi, Fukuoka F-term (reference) 2F051 AB03 BA07
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000400929AJP2002202213A (en) | 2000-12-28 | 2000-12-28 | Tightening pressure detection method |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000400929AJP2002202213A (en) | 2000-12-28 | 2000-12-28 | Tightening pressure detection method |
| Publication Number | Publication Date |
|---|---|
| JP2002202213Atrue JP2002202213A (en) | 2002-07-19 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000400929APendingJP2002202213A (en) | 2000-12-28 | 2000-12-28 | Tightening pressure detection method |
| Country | Link |
|---|---|
| JP (1) | JP2002202213A (en) |
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