JP2014129061A5 - - Google Patents
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- JP2014129061A5 JP2014129061A5 JP2012288631A JP2012288631A JP2014129061A5 JP 2014129061 A5 JP2014129061 A5 JP 2014129061A5 JP 2012288631 A JP2012288631 A JP 2012288631A JP 2012288631 A JP2012288631 A JP 2012288631A JP 2014129061 A5 JP2014129061 A5 JP 2014129061A5
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- handle
- shaft
- handle shaft
- contact
- contact member
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- 238000002955 isolation Methods 0.000 claims description 8
- 230000002093 peripheral Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 2
Description
本発明の第一特徴は、支持台から上方へ突設された円筒状のハンドルポストと、
前記支持台側から前記ハンドルポスト内に延出されたステアリング操作用の入力軸と、
上部にステアリングハンドルが固定され、前記ハンドルポスト内に回動自在に支持され、前記入力軸と連結されたハンドル軸と、
前記ハンドル軸を周方向に覆う状態で前記ハンドル軸の外周部と前記ハンドルポストの内周部との間に配置され、前記ハンドルポストと前記ハンドル軸との間での振動伝達を防止する第一防振部材と、
前記ハンドル軸側と非接触状態で前記ハンドルポスト側に固定され、前記第一防振部材の上方への移動を規制する第一規制部材と、
前記ハンドルポスト側と非接触状態で前記ハンドル軸側に固定され、前記第一防振部材の下方への移動を規制する第二規制部材と、が備えられている点にある。
The first feature of the present invention is a cylindrical handle post protruding upward from the support base,
An input shaft for steering operation extended into the handle post from the support base side;
A steering handle is fixed to the upper part, is supported rotatably in the handle post, and is connected to the input shaft .
A first shaft is disposed between an outer peripheral portion of the handle shaft and an inner peripheral portion of the handle post in a state of covering the handle shaft in a circumferential direction, and prevents vibration transmission between the handle post and the handle shaft. An anti-vibration member;
A first restricting member that is fixed to the handle post side in a non-contact state with the handle shaft side and restricts the upward movement of the first vibration isolation member;
And a second restricting member that is fixed to the handle shaft side in a non-contact state with the handle post side and restricts the downward movement of the first vibration isolation member.
本発明の第二特徴は、前記ハンドル軸の下端部と前記ステアリング操作用の入力軸とは、前記ハンドル軸の軸心方向に突き合わせて連結されている点にある。
本発明の第三特徴は、前記ハンドル軸の下端部とステアリング操作用の入力軸は、前記ハンドル軸の軸心方向においてその間に第二防振部材を介在させて連結されている点にある。
ステアリング操作用の入力軸は、ステアリング機構に連繋されているので、ステアリング機構からの振動が伝達されやすい。本発明の第三特徴によれば、ハンドル軸の下端部とステアリング操作用の入力軸とは、ハンドル軸の軸心方向において、その間に第二防振部材を介在させて連結されているので、ステアリング操作用の入力軸の振動が第二防振部材により低減され、ハンドル軸へと伝達される振動を低減できる。
本発明の第四特徴は、前記第一防振部材は、上端部に当接する第一当接部材と下端部に当接する第二当接部材とにより上下方向で挟まれた状態で備えられ、
前記第一当接部材は、前記ハンドル軸側と非接触状態で且つ前記ハンドルポスト側と接触状態で備えられ、
前記第二当接部材は、前記ハンドルポスト側と非接触状態で且つ前記ハンドル軸側と接触状態で備えられている点にある。
The second feature of the present invention, the lower end portion of the front Symbol handle shaft the input shaft for steering operation, in that it is connected against the axial direction of the handle shaft.
The third feature of the present invention, the lower end portion and an input shaft for the steering operation of the front Symbol handle shaft, in that it is connected by interposing a second vibration isolator between them in the axial direction of the handle shaft .
Since the input shaft for steering operation is linked to the steering mechanism, vibration from the steering mechanism is easily transmitted. According to the third feature of the present invention, the lower end portion of the handle shaft and the input shaft for steering operation are connected in the axial direction of the handle shaft with a second vibration isolation member interposed therebetween, The vibration of the input shaft for steering operation is reduced by the second vibration isolation member, and the vibration transmitted to the handle shaft can be reduced.
According to a fourth aspect of the present invention, the first vibration isolating member is provided in a state of being vertically sandwiched between a first abutting member that abuts on the upper end and a second abutting member that abuts on the lower end.
The first contact member is provided in a non-contact state with the handle shaft side and in a contact state with the handle post side,
The second contact member is provided in a non-contact state with the handle post side and in a contact state with the handle shaft side.
Claims (6)
前記支持台側から前記ハンドルポスト内に延出されたステアリング操作用の入力軸と、
上部にステアリングハンドルが固定され、前記ハンドルポスト内に回動自在に支持され、前記入力軸と連結されたハンドル軸と、
前記ハンドル軸を周方向に覆う状態で前記ハンドル軸の外周部と前記ハンドルポストの内周部との間に配置され、前記ハンドルポストと前記ハンドル軸との間での振動伝達を防止する第一防振部材と、
前記ハンドル軸側と非接触状態で前記ハンドルポスト側に固定され、前記第一防振部材の上方への移動を規制する第一規制部材と、
前記ハンドルポスト側と非接触状態で前記ハンドル軸側に固定され、前記第一防振部材の下方への移動を規制する第二規制部材と、が備えられている作業車のステアリング構造。 A cylindrical handle post protruding upward from the support base;
An input shaft for steering operation extended into the handle post from the support base side;
A steering handle is fixed to the upper part, is supported rotatably in the handle post, and is connected to the input shaft .
A first shaft is disposed between an outer peripheral portion of the handle shaft and an inner peripheral portion of the handle post in a state of covering the handle shaft in a circumferential direction, and prevents vibration transmission between the handle post and the handle shaft. An anti-vibration member;
A first restricting member that is fixed to the handle post side in a non-contact state with the handle shaft side and restricts the upward movement of the first vibration isolation member;
A steering structure for a work vehicle, comprising: a second restricting member that is fixed to the handle shaft side in a non-contact state with the handle post side and restricts the downward movement of the first vibration isolation member.
前記第一当接部材は、前記ハンドル軸側と非接触状態で且つ前記ハンドルポスト側と接触状態で備えられ、
前記第二当接部材は、前記ハンドルポスト側と非接触状態で且つ前記ハンドル軸側と接触状態で備えられている請求項１ないし３のいずれか一項に記載の作業車のステアリング構造。 The first vibration isolation member is provided in a state of being sandwiched in a vertical direction by a first contact member that contacts the upper end portion and a second contact member that contacts the lower end portion,
The first contact member is provided in a non-contact state with the handle shaft side and in a contact state with the handle post side,
4. The work vehicle steering structure according to claim 1, wherein the second contact member is provided in a non-contact state with the handle post side and in a contact state with the handle shaft side. 5.
前記第一当接部材の内径は、前記第二当接部材の外径よりも小径に形成されている請求項４に記載の作業車のステアリング構造。 Both the first contact member and the second contact member are formed in a cylindrical disk shape,
The work vehicle steering structure according to claim 4, wherein an inner diameter of the first contact member is smaller than an outer diameter of the second contact member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012288631A JP6013179B2 (en) | 2012-12-28 | 2012-12-28 | Steering structure of work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012288631A JP6013179B2 (en) | 2012-12-28 | 2012-12-28 | Steering structure of work vehicle |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014129061A JP2014129061A (en) | 2014-07-10 |
| JP2014129061A5 true JP2014129061A5 (en) | 2015-04-09 |
| JP6013179B2 JP6013179B2 (en) | 2016-10-25 |
Family
ID=51407883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2012288631A Active JP6013179B2 (en) | 2012-12-28 | 2012-12-28 | Steering structure of work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6013179B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018090024A (en) * | 2016-11-30 | 2018-06-14 | 株式会社クボタ | Working vehicle |
| JP6824089B2 (en) * | 2017-03-24 | 2021-02-03 | 株式会社クボタ | Work vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5951672U (en) * | 1982-09-29 | 1984-04-05 | 株式会社クボタ | Anti-vibration structure for steering in dual-purpose vehicles |
| JPS5957270U (en) * | 1982-10-08 | 1984-04-14 | 株式会社クボタ | Handle support device for front and rear reversible vehicles |
-
2012
- 2012-12-28 JP JP2012288631A patent/JP6013179B2/en active Active
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