JPH0517451Y2 - - Google Patents
Info
- Publication number
- JPH0517451Y2 JPH0517451Y2 JP17419586U JP17419586U JPH0517451Y2 JP H0517451 Y2 JPH0517451 Y2 JP H0517451Y2 JP 17419586 U JP17419586 U JP 17419586U JP 17419586 U JP17419586 U JP 17419586U JP H0517451 Y2 JPH0517451 Y2 JP H0517451Y2
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- connecting piece
- joint part
- leaf springs
- wall
- 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
- 230000002265 prevention Effects 0.000 claims description 9
Landscapes
- Pivots And Pivotal Connections (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、シヤフトに関し、特に偏心を生じな
いシヤフトに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a shaft, and particularly to a shaft that does not cause eccentricity.
（従来の技術及びその問題点）
第２図は、従来のシヤフトの内部構造を示す部
分破砕斜視図である。(Prior art and its problems) FIG. 2 is a partially exploded perspective view showing the internal structure of a conventional shaft.
従来のシヤフトは、第２図に示すように、互い
に軸を同じくする第１のシヤフト５と第２のシヤ
フト６とを３枚の板バネ３で結合してなる。この
シヤフトにトルクを与えると板バネ３が曲がり、
回転する。 As shown in FIG. 2, a conventional shaft is constructed by connecting a first shaft 5 and a second shaft 6, which share the same axis, with three leaf springs 3. When torque is applied to this shaft, the leaf spring 3 bends,
Rotate.
ところが、シヤフトの回転に伴い第１のシヤフ
ト５と第２のシヤフト６との軸がずれてしまうと
いう問題がある。この軸ずれは、シヤフトの回転
角及び直径（板バネの長さ）に比例する。 However, there is a problem in that the axes of the first shaft 5 and the second shaft 6 become misaligned as the shafts rotate. This axis deviation is proportional to the rotation angle and diameter (length of the leaf spring) of the shaft.
（問題点を解決するための手段）
前述の問題点を解決するために本考案が提供す
る偏心防止シヤフトは、第１の円筒シヤフトと、
当該第１の円筒シヤフトと同軸の第２の円筒シヤ
フトとがジヨイント部を介して結合してあり、前
記ジヨイント部の一端部の下部に立設してある第
１の連結片が前記第１の円筒シヤフト内に挿入し
てあり、当該第１の連結片と前記第１のシヤフト
の内側壁部との間に２枚の板バネが互いに直交す
る方向に取り付けてあり、前記ジヨイント部の他
端部の上部に立設してある第２の連結片が前記第
２の円筒シヤフト内に挿入してあり、当該第２の
連結片と前記第１のシヤフト内側壁部との間に２
枚の板バネが互いに直交する方向に取り付けてあ
り、前記第１のシヤフト並びにこの第１のシヤフ
ト内の前記第１の連結片および該第１の連結片と
該第１のシヤフト内側壁部の間に取り付けてある
前記２枚の板バネでなる第１の構造は、前記ジヨ
イント部の前記軸上の中心点に関し、前記第２の
シヤフト並びにこの第２のシヤフト内の前記第２
の連結片および該第２の連結片と該第２のシヤフ
トの内側壁部の間に取り付けてある前記２枚の板
バネでなる第２の構造に点対称であることを特徴
とする。(Means for Solving the Problems) In order to solve the above-mentioned problems, the eccentricity prevention shaft provided by the present invention includes a first cylindrical shaft,
The first cylindrical shaft and a coaxial second cylindrical shaft are connected via a joint part, and a first connecting piece erected at a lower part of one end of the joint part is connected to the first cylindrical shaft. It is inserted into the cylindrical shaft, and two leaf springs are attached in mutually orthogonal directions between the first connecting piece and the inner wall of the first shaft, and the other end of the joint part is inserted into the cylindrical shaft. A second connecting piece is inserted into the second cylindrical shaft, and a second connecting piece is provided upright on the upper part of the shaft, and a second connecting piece is inserted between the second connecting piece and the inner wall of the first shaft.
A plurality of leaf springs are attached in directions perpendicular to each other, the first shaft, the first connecting piece in the first shaft, and the first connecting piece and the inner wall of the first shaft. A first structure consisting of the two leaf springs attached between the second shaft and the second shaft in the second shaft with respect to the center point of the joint on the axis.
It is characterized in that it is point symmetrical to the connecting piece and the second structure made up of the two leaf springs attached between the second connecting piece and the inner wall of the second shaft.
（実施例）
次に、本考案について図面を参照して説明す
る。(Example) Next, the present invention will be described with reference to the drawings.
第１図は、本考案の一実施例の偏心防止シヤフ
トの内部構造を示す部分破砕斜視図である。 FIG. 1 is a partially exploded perspective view showing the internal structure of an eccentricity prevention shaft according to an embodiment of the present invention.
図中、１は第１のシヤフト、２は第２のシヤフ
ト、１ａ，１ｂ，２ａ，２ｂは板バネ、４はジヨ
イント部、７は第１の連結片、８は第２の連結片
である。 In the figure, 1 is a first shaft, 2 is a second shaft, 1a, 1b, 2a, 2b are leaf springs, 4 is a joint part, 7 is a first connection piece, and 8 is a second connection piece. .
本実施例の偏心防止シヤフトは、第１図に示す
ように、互いに軸を同じくする第１のシヤフト１
と第２のシヤフト２とをジヨイント部４を介して
結合してなる。 As shown in FIG. 1, the eccentricity prevention shaft of this embodiment has a first shaft 1 having the same axis as each other.
and the second shaft 2 are coupled via a joint portion 4.
ジヨイント部４は円筒状をなし、その一端部の
下部には第１の連結片７が立設してあり、ジヨイ
ント部４の他端部の上部には第２の連結片８が立
設してある。各連結片７，８は、第１図に示すよ
うに、円筒状の第１のシヤフト１及び第２のシヤ
フト２の内側壁部に沿うように弧状をなし、各シ
ヤフト１，２にそれぞれ挿入してある。第１の連
結片７と第１のシヤフト１との間には、２板の板
バネ１ａ，１ｂが互いに直交する方向に取り付け
てある。同様に第２の連結片８と第２のシヤフト
２との間には、２板の板バネ２ａ，２ｂが互いに
直交する方向に取り付けてある。ここで、第１の
シヤフト１、第１の連結片７および板バネ１ａ，
１ｂは前述の第１の構造をなす。また、第２のシ
ヤフト２、第２の連結片８および板バネ２ａ，２
ｂは前述の第２の構造をなす。第１の構造と第２
の構造とは、ジヨイント部４の中心点に関し点対
称である。 The joint part 4 has a cylindrical shape, and a first connecting piece 7 stands up from the lower part of one end thereof, and a second connecting piece 8 stands up from the upper part of the other end of the joint part 4. There is. As shown in FIG. 1, each connecting piece 7, 8 has an arc shape along the inner wall of the cylindrical first shaft 1 and second shaft 2, and is inserted into each shaft 1, 2, respectively. It has been done. Two plate springs 1a and 1b are attached between the first connecting piece 7 and the first shaft 1 in directions perpendicular to each other. Similarly, two plate springs 2a and 2b are attached between the second connecting piece 8 and the second shaft 2 in directions perpendicular to each other. Here, the first shaft 1, the first connecting piece 7 and the leaf spring 1a,
1b has the first structure described above. Also, the second shaft 2, the second connecting piece 8, and the leaf springs 2a, 2
b forms the above-mentioned second structure. The first structure and the second
The structure is symmetrical with respect to the center point of the joint portion 4.
第３図は、第１図において第１のシヤフト１の
左方から第１のシヤフト１方向を軸に平行に見た
側面図、第４図はジヨイント部４と第２のシヤフ
ト２との境界面から第２のシヤフト２方向を軸に
平行に見た断面図である。第３図及び第４図に
は、第１のシヤフト１をｚ軸右ネジの方向に回転
し、第２のシヤフト２を−ｚ軸右ネジの方向に回
転したときの両シヤフトの偏心方向と偏心量を示
す。第１のシヤフト及び第２のシヤフト２にトル
クを与えると、板バネ１ａ，１ｂ，２ａ，２ｂが
第３図および第４図に示すように曲がり、各シヤ
フト１，２が回転する。このとき、ジヨイント部
４に対する第１のシヤフト１の偏心D1と同ジヨ
イント部４に対する第２のシヤフト２の偏心D2
とは等しい。すなわち、それぞれ同方向に同量の
偏心が生ずる。したがつて、ジヨイント部４の軸
は板バネ１ａ，１ｂ，２ａ，２ｂの反発力によつ
て両シヤフト１，２の軸からずれるが、両シヤフ
ト１，２の軸は一致する。 3 is a side view of the first shaft 1 viewed from the left side in FIG. 1 parallel to the axis in the direction of the first shaft 1, and FIG. FIG. 2 is a cross-sectional view of the second shaft viewed from the plane in two directions parallel to the axis. Figures 3 and 4 show the eccentric directions of both shafts when the first shaft 1 is rotated in the direction of the z-axis right-hand thread and the second shaft 2 is rotated in the -z-axis right-hand thread direction. Indicates the amount of eccentricity. When torque is applied to the first shaft and the second shaft 2, the leaf springs 1a, 1b, 2a, 2b bend as shown in FIGS. 3 and 4, and each shaft 1, 2 rotates. At this time, the eccentricity D 1 of the first shaft 1 with respect to the joint part 4 and the eccentricity D 2 of the second shaft 2 with respect to the joint part 4
is equal to That is, the same amount of eccentricity occurs in the same direction. Therefore, although the axis of the joint portion 4 is deviated from the axis of both shafts 1, 2 due to the repulsive force of leaf springs 1a, 1b, 2a, 2b, the axes of both shafts 1, 2 coincide.
（考案の効果）
以上説明したように本考案の偏心防止シヤフト
によれば、回転させても第１のシヤフトと第２の
シヤフトとの軸がずれない。(Effects of the Invention) As explained above, according to the eccentricity prevention shaft of the present invention, the axes of the first shaft and the second shaft do not shift even when rotated.
第１図は本考案の一実施例の偏心防止シヤフト
の内部構造を示す部分破砕斜視図、第２図は従来
のシヤフトの内部構造を示す部分破砕斜視図、第
３図は第１図の偏心防止シヤフトにおいて第１の
シヤフト１の左方から第１のシヤフト１方向を軸
に平行に見た側面図、第４図は第１の偏心防止シ
ヤフトにおいてジヨイント部４と第２のシヤフト
２との境界面から第２のシヤフト２方向を軸に平
行に見た断面図である。
１，５……第１のシヤフト、２，６……第２の
シヤフト、１ａ，１ｂ，２ａ，２ｂ，３……板バ
ネ、４……ジヨイント部、７……第１の連結片、
８……第２の連結片。
Figure 1 is a partially exploded perspective view showing the internal structure of an eccentricity prevention shaft according to an embodiment of the present invention, Figure 2 is a partially exploded perspective view showing the internal structure of a conventional shaft, and Figure 3 is the eccentricity prevention shaft of Figure 1. A side view of the prevention shaft viewed from the left side of the first shaft 1 in the direction of the first shaft 1 parallel to the axis, FIG. 4 shows the joint portion 4 and the second shaft 2 in the first eccentricity prevention shaft FIG. 2 is a cross-sectional view of the second shaft viewed from the boundary surface in two directions parallel to the axis. 1, 5... First shaft, 2, 6... Second shaft, 1a, 1b, 2a, 2b, 3... Leaf spring, 4... Joint part, 7... First connection piece,
8...Second connection piece.
Claims (1)
トと同軸の第２の円筒シヤフトとがジヨイント部
を介して結合してあり、前記ジヨイント部の一端
部に立設してある第１の連結片が前記第１の円筒
シヤフト内に挿入してあり、当該第１の連結片と
前記第１のシヤフトの内側壁部との間に２枚の板
バネが互いに直交する方向に取り付けてあり、前
記ジヨイント部の他端部に立設してある第２の連
結片が前記第２の円筒シヤフト内に挿入してあ
り、当該第２の連結片と前記第１のシヤフト内側
壁部との間に２枚の板バネが互いに直交する方向
に取り付けてあり、前記第１のシヤフト並びにこ
の第１のシヤフト内の前記第１の連結片および該
第１の連結片と該第１のシヤフトの内側壁部の間
に取り付けてある前記２枚の板バネでなる第１の
構造は、前記ジヨイント部の前記軸上の中心点に
関し、前記第２のシヤフト並びにこの第２のシヤ
フト内の前記第２の連結片および該第２の連結片
と該第２のシヤフトの内側壁部の間に取り付けて
ある前記２枚の板バネでなる第２の構造に点対称
であることを特徴とする偏心防止シヤフト。 A first cylindrical shaft and a second cylindrical shaft coaxial with the first cylindrical shaft are connected via a joint part, and a first connecting piece is provided upright at one end of the joint part. is inserted into the first cylindrical shaft, two leaf springs are attached between the first connecting piece and the inner wall of the first shaft in directions orthogonal to each other, and the A second connecting piece erected at the other end of the joint part is inserted into the second cylindrical shaft, and between the second connecting piece and the inner wall of the first shaft. two leaf springs are attached in directions orthogonal to each other, the first shaft, the first connecting piece in the first shaft, the first connecting piece and the inner wall of the first shaft; The first structure consisting of the two leaf springs attached between the parts is connected to the second shaft and the second leaf spring in the second shaft with respect to the center point on the axis of the joint part. An eccentricity prevention shaft that is point symmetrical to a connecting piece and a second structure made up of the two leaf springs attached between the second connecting piece and the inner wall of the second shaft. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17419586U JPH0517451Y2 (en) | 1986-11-13 | 1986-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17419586U JPH0517451Y2 (en) | 1986-11-13 | 1986-11-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6378726U JPS6378726U (en) | 1988-05-25 |
| JPH0517451Y2 true JPH0517451Y2 (en) | 1993-05-11 |
Family
ID=31112359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17419586U Expired - Lifetime JPH0517451Y2 (en) | 1986-11-13 | 1986-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517451Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10330947B4 (en) * | 2003-07-08 | 2015-10-29 | Schenck Process Gmbh | Cross spring element |
-
1986
- 1986-11-13 JP JP17419586U patent/JPH0517451Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6378726U (en) | 1988-05-25 |
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