JP2022013761A5 - - Google Patents
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- JP2022013761A5 JP2022013761A5 JP2021101534A JP2021101534A JP2022013761A5 JP 2022013761 A5 JP2022013761 A5 JP 2022013761A5 JP 2021101534 A JP2021101534 A JP 2021101534A JP 2021101534 A JP2021101534 A JP 2021101534A JP 2022013761 A5 JP2022013761 A5 JP 2022013761A5
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- worm
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- transmission member
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- 238000010438 heat treatment Methods 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 28
- 239000002184 metal Substances 0.000 claims 2
- 230000032258 transport Effects 0.000 description 3
Description
本発明の一態様は、記録材を加熱する第一回転部材と、前記第一回転部材に当接し、前記第一回転部材と共に記録材を挟持搬送して記録材にトナー像を定着させるニップ部を形成する第二回転部材と、前記第二回転部材を支持する一対の側板と、前記第一回転部材に対する前記第二回転部材の位置を変えて前記ニップ部における加圧力を切換える切換機構と、を備え、前記切換機構は、モータと、前記モータにより駆動されて回転するウォームと、前記ウォームと噛み合い、前記ウォームから駆動力が伝達されるウォームホイールと、前記ウォームホイールの回転が伝達されることで回転するカムと、前記ウォームを回転自在に支持する一対の軸受と、前記カムと当接し、前記カムの回転に伴い前記第一回転部材に対して前記第二回転部材を変位させる変位機構と、を有し、前記一対の側板の１つは、前記一対の軸受を有することを特徴とする像加熱装置である。 One aspect of the present invention is an image heating device comprising: a first rotating member that heats a recording material ; a second rotating member that contacts the first rotating member and, together with the first rotating member, sandwiches and transports the recording material to form a nip portion where a toner image is fixed to the recording material ; a pair of side plates that support the second rotating member ; and a switching mechanism that changes the position of the second rotating member relative to the first rotating member to switch the pressure force in the nip portion, wherein the switching mechanism has: a motor, a worm that is driven to rotate by the motor , a worm wheel that meshes with the worm and to which driving force is transmitted from the worm, a cam that rotates as the rotation of the worm wheel is transmitted, a pair of bearings that rotatably support the worm, and a displacement mechanism that contacts the cam and displaces the second rotating member relative to the first rotating member as the cam rotates, and one of the pair of side plates has the pair of bearings.
本発明の一態様は、記録材を加熱する第一回転部材と、前記第一回転部材に当接し、前記第一回転部材と共に記録材を挟持搬送して記録材にトナー像を定着させるニップ部を形成する第二回転部材と、前記第二回転部材を支持する一対の側板と、前記第一回転部材に対する前記第二回転部材の位置を変えて、前記ニップ部における加圧と加圧力の解除とを切換える切換機構と、備え、前記切換機構は、モータと、前記モータにより駆動されて回転するウォームと、前記ウォームと噛み合い、前記ウォームから駆動力が伝達されるウォームホイールと、前記ウォームホイールの回転が伝達されることで回転するカムと、前記ウォームを回転自在に支持する一対の軸受と、前記カムと当接し、前記カムの回転に伴い前記第一回転部材に対して前記第二回転部材を変位させる変位機構と、を有し、前記一対の側板の１つは、前記一対の軸受を有することを特徴とする像加熱装置である。
本発明の一態様は、記録材を加熱する第一回転部材と、前記第一回転部材に当接し、前記第一回転部材と共に記録材を挟持搬送して記録材にトナー像を定着させるニップ部を形成する第二回転部材と、前記第二回転部材を支持する一対の側板と、前記第一回転部材に対する前記第二回転部材の位置を変えて前記ニップ部における加圧力を切換える切換機構と、を備え、前記切換機構は、モータと、前記モータにより駆動されて回転するウォームと、前記ウォームと噛み合い、前記ウォームから駆動力が伝達されるウォームホイールと、前記ウォームホイールの回転が伝達されることで回転するカムと、第一位置で前記ウォームを回転自在に支持する軸受と、前記カムと当接し、前記カムの回転に伴い前記第一回転部材に対して前記第二回転部材を変位させる変位機構と、を有し、前記一対の側板の１つは、前記軸受を有することを特徴とする像加熱装置である。
One aspect of the present invention is an image heating device comprising: a first rotating member that heats a recording material ; a second rotating member that contacts the first rotating member and, together with the first rotating member, sandwiches and transports the recording material to form a nip portion at which a toner image is fixed to the recording material ; a pair of side plates that support the second rotating member; and a switching mechanism that changes the position of the second rotating member relative to the first rotating member to switch between applying pressure and releasing the pressure in the nip portion, wherein the switching mechanism has a motor, a worm that is driven and rotated by the motor, a worm wheel that meshes with the worm and receives driving force from the worm , a cam that rotates as the rotation of the worm wheel is transmitted, a pair of bearings that rotatably support the worm, and a displacement mechanism that contacts the cam and displaces the second rotating member relative to the first rotating member as the cam rotates, and one of the pair of side plates has the pair of bearings.
One aspect of the present invention is an image heating device comprising: a first rotating member that heats a recording material; a second rotating member that contacts the first rotating member and, together with the first rotating member, sandwiches and transports the recording material to form a nip portion where a toner image is fixed to the recording material; a pair of side plates that support the second rotating member; and a switching mechanism that changes the position of the second rotating member relative to the first rotating member to switch the pressure force in the nip portion, wherein the switching mechanism has: a motor, a worm that is driven to rotate by the motor, a worm wheel that meshes with the worm and to which driving force is transmitted from the worm, a cam that rotates as the rotation of the worm wheel is transmitted, a bearing that rotatably supports the worm at a first position, and a displacement mechanism that contacts the cam and displaces the second rotating member relative to the first rotating member as the cam rotates, and one of the pair of side plates has the bearing.
Claims (20)
前記第一回転部材に当接し、前記第一回転部材と共に記録材を挟持搬送して記録材にトナー像を定着させるニップ部を形成する第二回転部材と、
前記第二回転部材を支持する一対の側板と、
前記第一回転部材に対する前記第二回転部材の位置を変えて前記ニップ部における加圧力を切換える切換機構と、を備え、
前記切換機構は、
モータと、
前記モータにより駆動されて回転するウォームと、
前記ウォームと噛み合い、前記ウォームから駆動力が伝達されるウォームホイールと、
前記ウォームホイールの回転が伝達されることで回転するカムと、
前記ウォームを回転自在に支持する一対の軸受と、
前記カムと当接し、前記カムの回転に伴い前記第一回転部材に対して前記第二回転部材を変位させる変位機構と、を有し、
前記一対の側板の１つは、前記一対の軸受を有することを特徴とする像加熱装置。 a first rotating member for heating the recording material ;
a second rotating member that contacts the first rotating member and nip-conveys a recording material together with the first rotating member to form a nip portion for fixing a toner image on the recording material ;
A pair of side plates supporting the second rotating member;
a switching mechanism that switches a pressure force in the nip portion by changing a position of the second rotating member relative to the first rotating member,
The switching mechanism includes:
A motor;
a worm that is driven to rotate by the motor ;
a worm wheel that meshes with the worm and receives a driving force from the worm;
A cam that rotates by the rotation of the worm wheel being transmitted thereto ;
A pair of bearings that rotatably support the worm;
a displacement mechanism that abuts against the cam and displaces the second rotating member relative to the first rotating member as the cam rotates ,
An image heating apparatus , wherein one of the pair of side plates has the pair of bearings .
前記ウォームの回転軸線方向において前記ウォームの一端に取り付けられ、前記第一駆動伝達部材から駆動力が伝達される第二駆動伝達部材と、を更に備え、
前記第一駆動伝達部材と前記第二駆動伝達部材はそれぞれ平歯ギアであり、
前記第一駆動伝達部材は、前記第二駆動伝達部材と噛み合うことを特徴とする請求項１に記載の像加熱装置。 a first drive transmission member attached to a shaft of the motor;
a second drive transmission member attached to one end of the worm in the rotational axis direction of the worm, to which a driving force is transmitted from the first drive transmission member,
the first drive transmission member and the second drive transmission member are each a spur gear;
2. The image heating apparatus according to claim 1, wherein the first drive transmission member meshes with the second drive transmission member.
前記第二モータは、他方の側板に支持されていることを特徴とする請求項４に記載の像加熱装置。 When the motor is a first motor, the motor has a second motor that rotates at least the first rotating member or the second rotating member,
5. An image heating apparatus according to claim 4, wherein the second motor is supported by the other side plate.
前記ウォームの回転軸線方向において前記ウォームの一端に取り付けられ、前記第一駆動伝達部材から駆動力が伝達される第二駆動伝達部材と、を更に備え、
前記第一駆動伝達部材と前記第二駆動伝達部材と前記ウォームと前記ウォームホイールは、それぞれ金属製であることを特徴とする請求項１に記載の像加熱装置。 a first drive transmission member attached to a shaft of the motor;
a second drive transmission member attached to one end of the worm in the rotational axis direction of the worm, to which a driving force is transmitted from the first drive transmission member,
2. An image heating apparatus according to claim 1 , wherein the first drive transmission member, the second drive transmission member, the worm, and the worm wheel are each made of metal.
前記ベルトを張架して傾斜可能なステアリングローラと、前記ベルトを介して前記第二回転部材を加圧するパッドと、前記ベルトを張架して前記ベルトを加熱する加熱ローラと、を有することを特徴とする請求項１ないし６の何れか１項に記載の像加熱装置。 the first rotating member being a belt;
7. The image heating apparatus according to claim 1, further comprising: a steering roller that can be tilted by tensioning the belt; a pad that presses the second rotating member via the belt; and a heating roller that tensions the belt and heats the belt.
前記ステアリングローラを傾斜させるためのステアリングモータは、他方の側板に支持されることを特徴とする請求項７に記載の像加熱装置。 the motor and the worm are supported by one of the pair of side plates;
8. An image heating apparatus according to claim 7, wherein a steering motor for tilting said steering roller is supported by the other side plate.
前記第一回転部材に当接し、前記第一回転部材と共に記録材を挟持搬送して記録材にトナー像を定着させるニップ部を形成する第二回転部材と、a second rotating member that contacts the first rotating member and nip-conveys a recording material together with the first rotating member to form a nip portion for fixing a toner image on the recording material;
前記第二回転部材を支持する一対の側板と、A pair of side plates supporting the second rotating member;
前記第一回転部材に対する前記第二回転部材の位置を変えて、前記ニップ部における加圧と加圧力の解除とを切換える切換機構と、備え、a switching mechanism that switches between applying pressure and releasing the pressure in the nip portion by changing a position of the second rotating member relative to the first rotating member,
前記切換機構は、The switching mechanism includes:
モータと、A motor;
前記モータにより駆動されて回転するウォームと、a worm that is driven to rotate by the motor;
前記ウォームと噛み合い、前記ウォームから駆動力が伝達されるウォームホイールと、a worm wheel that meshes with the worm and receives a driving force from the worm;
前記ウォームホイールの回転が伝達されることで回転するカムと、A cam that rotates by the rotation of the worm wheel being transmitted thereto;
前記ウォームを回転自在に支持する一対の軸受と、A pair of bearings that rotatably support the worm;
前記カムと当接し、前記カムの回転に伴い前記第一回転部材に対して前記第二回転部材を変位させる変位機構と、を有し、a displacement mechanism that abuts against the cam and displaces the second rotating member relative to the first rotating member as the cam rotates,
前記一対の側板の１つは、前記一対の軸受を有することを特徴とする像加熱装置。An image heating apparatus, wherein one of the pair of side plates has the pair of bearings.
前記ウォームの回転軸線方向において前記ウォームの一端に取り付けられ、前記第一駆動伝達部材から駆動力が伝達される第二駆動伝達部材と、を更に備え、a second drive transmission member attached to one end of the worm in the rotational axis direction of the worm, to which a driving force is transmitted from the first drive transmission member,
前記第一駆動伝達部材と前記第二駆動伝達部材はそれぞれ平歯ギアであり、the first drive transmission member and the second drive transmission member are each a spur gear;
前記第一駆動伝達部材は、前記第二駆動伝達部材と噛み合うことを特徴とする請求項１０に記載の像加熱装置。11. An image heating apparatus according to claim 10, wherein the first drive transmission member meshes with the second drive transmission member.
前記第二モータは、他方の側板に支持されていることを特徴とする請求項１３に記載の像加熱装置。14. An image heating apparatus according to claim 13, wherein the second motor is supported by the other side plate.
前記ウォームの回転軸線方向において前記ウォームの一端に取り付けられ、前記第一駆動伝達部材から駆動力が伝達される第二駆動伝達部材と、を更に備え、a second drive transmission member attached to one end of the worm in the rotational axis direction of the worm, to which a driving force is transmitted from the first drive transmission member,
前記第一駆動伝達部材と前記第二駆動伝達部材と前記ウォームと前記ウォームホイールは、それぞれ金属製であることを特徴とする請求項１０に記載の像加熱装置。11. An image heating apparatus according to claim 10, wherein the first drive transmission member, the second drive transmission member, the worm, and the worm wheel are each made of metal.
前記ウォームの回転軸線方向において前記ウォームの一端に取り付けられ、前記第一駆動伝達部材から駆動力が伝達される第二駆動伝達部材と、を更に備えたことを特徴とする請求項１又は１０に記載の像加熱装置。11. The image heating apparatus according to claim 1, further comprising: a second drive transmission member attached to one end of the worm in the direction of the rotation axis of the worm, the second drive transmission member receiving a drive force from the first drive transmission member.
前記一対の軸受は、前記支持板に設けられていることを特徴とする請求項１又は１０に記載の像加熱装置。11. An image heating apparatus according to claim 1, wherein the pair of bearings are provided on the support plate.
前記第一回転部材に当接し、前記第一回転部材と共に記録材を挟持搬送して記録材にトナー像を定着させるニップ部を形成する第二回転部材と、a second rotating member that contacts the first rotating member and nip-conveys a recording material together with the first rotating member to form a nip portion for fixing a toner image on the recording material;
前記第二回転部材を支持する一対の側板と、A pair of side plates supporting the second rotating member;
前記第一回転部材に対する前記第二回転部材の位置を変えて前記ニップ部における加圧力を切換える切換機構と、を備え、a switching mechanism that switches a pressure force in the nip portion by changing a position of the second rotating member relative to the first rotating member,
前記切換機構は、The switching mechanism includes:
モータと、A motor;
前記モータにより駆動されて回転するウォームと、a worm that is driven to rotate by the motor;
前記ウォームと噛み合い、前記ウォームから駆動力が伝達されるウォームホイールと、a worm wheel that meshes with the worm and to which a driving force is transmitted from the worm;
前記ウォームホイールの回転が伝達されることで回転するカムと、A cam that rotates by the rotation of the worm wheel being transmitted thereto;
第一位置で前記ウォームを回転自在に支持する軸受と、a bearing that rotatably supports the worm at a first position;
前記カムと当接し、前記カムの回転に伴い前記第一回転部材に対して前記第二回転部材を変位させる変位機構と、を有し、a displacement mechanism that abuts against the cam and displaces the second rotating member relative to the first rotating member as the cam rotates,
前記一対の側板の１つは、前記軸受を有することを特徴とする像加熱装置。An image heating apparatus, wherein one of the pair of side plates has the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/363,486 US11809109B2 (en) | 2020-07-02 | 2021-06-30 | Image heating apparatus having a worm that is rotatably supported at two different positions |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020114840 | 2020-07-02 | ||
| JP2020114840 | 2020-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2022013761A JP2022013761A (en) | 2022-01-18 |
| JP2022013761A5 true JP2022013761A5 (en) | 2024-06-24 |
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ID=80169904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021101534A Pending JP2022013761A (en) | 2020-07-02 | 2021-06-18 | Image heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2022013761A (en) |
-
2021
- 2021-06-18 JP JP2021101534A patent/JP2022013761A/en active Pending
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