JPH08285034A - Drive transmission mechanism - Google Patents

Drive transmission mechanism

Info

Publication number
JPH08285034A
JPH08285034A JP7092816A JP9281695A JPH08285034A JP H08285034 A JPH08285034 A JP H08285034A JP 7092816 A JP7092816 A JP 7092816A JP 9281695 A JP9281695 A JP 9281695A JP H08285034 A JPH08285034 A JP H08285034A
Authority
JP
Japan
Prior art keywords
gear
drive
idler
idler gear
fixing
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.)
Pending
Application number
JP7092816A
Other languages
Japanese (ja)
Inventor
Yuzuru Ebara
譲 江原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7092816A priority Critical patent/JPH08285034A/en
Publication of JPH08285034A publication Critical patent/JPH08285034A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To provide drive transmission mechanism that can easily engage/ disengage drive connection from a driving gear to a driven gear without requiring complicated mechanism. CONSTITUTION: An idler gear 3 is rotatably supported on a supporting plate 7 with the rotational center of a pulley gear 1 as the center. The idler gear 3 is meshed with a fixed gear 5 by rotational force generated by a pressure angle θ when the pulley gear 1 is rotated normally, and the mesh of the idler gear 3 with the fixed gear 5 is released by rotational force generated by the pressure angle θ when the pulley gear 1 is rotated reversely.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、駆動ギヤからアイドラ
ギヤへ、該アイドラギヤから従動ギヤへ回転力を伝達す
る駆動伝達機構であって、特に複写機、プリンタ、ファ
クシミリ等の画像形成装置に設けられる駆動伝達機構に
関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive transmission mechanism for transmitting a rotational force from a drive gear to an idler gear and from the idler gear to a driven gear, and is particularly provided in an image forming apparatus such as a copying machine, a printer, a facsimile or the like. The present invention relates to a drive transmission mechanism.

【0002】[0002]

【従来の技術】上記画像形成装置において、第1のロー
ラと第2のローラの間に用紙を通し、これを搬送する用
紙処理装置は従来より周知である。その一例として、所
定の熱源を内蔵した定着ローラ(第1のローラ)に加圧
ローラ(第2のローラ)を圧接させて、両ローラの間に
転写紙のような用紙を通すことにより、用紙上の未定着
像を加熱定着するようにした定着装置が知られている。
2. Description of the Related Art In the above-mentioned image forming apparatus, a sheet processing apparatus which passes a sheet between a first roller and a second roller and conveys the sheet is well known. As an example, a paper such as a transfer paper is passed between a pair of rollers by pressing a pressure roller (second roller) against a fixing roller (first roller) having a predetermined heat source therein. 2. Description of the Related Art A fixing device that heats and fixes an upper unfixed image is known.

【0003】この種の定着装置では、定着ローラに共軸
一体的に設けたギアに駆動ギアを噛み合わせて、この駆
動ギアの駆動力により定着ローラを回転させているが、
このような駆動手段で駆動される定着ローラと加圧ロー
ラとの間で、転写紙にジャムを生じることがある。
In this type of fixing device, a driving gear is engaged with a gear provided coaxially with the fixing roller, and the fixing roller is rotated by the driving force of the driving gear.
Jam may occur on the transfer sheet between the fixing roller and the pressure roller driven by such a driving unit.

【0004】このようなジャムに対処するために、従来
においては、定着ローラの軸端にノブなどを設け、これ
を回動操作して定着ローラを回動させつつジャム紙を除
去しているが、その回動は、上述のギア系やチェーン、
スプロケットなどの伝達系の負荷に抗して行わなければ
ならず、その回動を強引に行うと、チェーンがスプロケ
ットから外れたりするおそれがあった。
In order to deal with such a jam, conventionally, a knob or the like is provided at the shaft end of the fixing roller, and the jammed paper is removed while rotating the fixing roller by rotating the knob. , Its rotation is based on the above-mentioned gear system and chain,
It has to be performed against the load of the transmission system such as the sprocket, and if the rotation is forced, the chain may come off the sprocket.

【0005】[0005]

【発明が解決しようとする課題】本発明は、上記した従
来の問題を解消し、複雑な機構を必要とせず、容易に駆
動ギヤから従動ギヤへの駆動連結を接離することができ
ることを目的としている。
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to easily connect and disconnect the drive connection from the drive gear to the driven gear without requiring a complicated mechanism. I am trying.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
に本発明は、駆動ギヤからアイドラギヤへ、該アイドラ
ギヤから従動ギヤへ回転力を伝達する駆動伝達機構にお
いて、前記アイドラギヤが、前記駆動ギヤの回転中心を
中心として回動可能に支持され、前記アイドラギヤは前
記駆動ギヤが正回転されたときに、圧力角により生ずる
回動力によって前記従動ギヤに噛み合い、前記駆動ギヤ
が逆回転されたときに、圧力角により生ずる回動力によ
って前記従動ギヤとの噛み合いが解除されることを特徴
としている。
In order to achieve the above object, the present invention provides a drive transmission mechanism for transmitting a rotational force from a drive gear to an idler gear and from the idler gear to a driven gear, wherein the idler gear is The idler gear is rotatably supported about a rotation center, and when the drive gear is normally rotated, the idler gear meshes with the driven gear by a rotating force generated by a pressure angle, and when the drive gear is reversely rotated, It is characterized in that the engagement with the driven gear is released by the turning force generated by the pressure angle.

【0007】さらに、上記目的を達成するために本発明
は、駆動ギヤからアイドラギヤへ、該アイドラギヤから
従動ギヤへ回転力を伝達する駆動伝達機構において、前
記アイドラギヤが、前記駆動ギヤの回転中心を中心とし
て回動可能に支持され、該アイドラギヤに前記従動ギヤ
との噛み合いが解除される方向の引っ張り力を付勢する
弾性手段を設け、前記アイドラギヤは前記駆動ギヤが正
回転されたときに、圧力角により生ずる回動力によって
前記従動ギヤに噛み合い、前記駆動ギヤが停止されたと
き、前記弾性手段の引っ張り力によって前記従動ギヤと
の噛み合いが解除されることを特徴としている。
Further, in order to achieve the above object, the present invention is a drive transmission mechanism for transmitting a rotational force from a drive gear to an idler gear and from the idler gear to a driven gear, wherein the idler gear is centered on a rotation center of the drive gear. Is provided so as to be rotatable, and the idler gear is provided with an elastic means for urging a pulling force in a direction in which the meshing with the driven gear is released, and the idler gear has a pressure angle when the drive gear is normally rotated. When the drive gear is stopped, meshing with the driven gear is released by the pulling force of the elastic means when the drive gear is stopped.

【0008】[0008]

【実施例】以下、本発明の実施例を添付図面に従って説
明する。図1は、本発明に係る駆動伝達機構を備えた定
着装置及び駆動部の一例を示す概略斜視図である。
Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic perspective view showing an example of a fixing device and a drive unit having a drive transmission mechanism according to the present invention.

【0009】図1において、機械本体の側板11に取り
付けられた駆動モータ10は通常の正回転においてC方
向へ回転され、その回転力はタイミングベルト9、駆動
ギヤとしてのプーリギヤ1、アイドラギヤ3を介して定
着ユニット20側に設けられた従動ギヤとしての定着ギ
ヤ5に伝達される。そして、定着ギヤ5から中間ギヤ1
4を介して定着ローラギヤ15に伝達され、定着ローラ
17がD方向に回転され、加圧ローラ18がE方向に従
動回転されることにより、矢印方向から未定着トナー像
を担持した転写紙19が搬送されると、定着ローラ17
と加圧ローラ18との圧接部を通過して未定着トナー像
が転写紙19に加熱定着される。
In FIG. 1, a drive motor 10 mounted on a side plate 11 of a machine body is rotated in the C direction in a normal forward rotation, and its rotational force is transmitted through a timing belt 9, a pulley gear 1 as a drive gear, and an idler gear 3. And is transmitted to the fixing gear 5 as a driven gear provided on the fixing unit 20 side. Then, from the fixing gear 5 to the intermediate gear 1
4 is transmitted to the fixing roller gear 15, the fixing roller 17 is rotated in the D direction, and the pressure roller 18 is driven to rotate in the E direction, so that the transfer paper 19 carrying the unfixed toner image is transferred from the arrow direction. When conveyed, the fixing roller 17
The unfixed toner image is heated and fixed on the transfer paper 19 through the pressure contact portion between the pressure roller 18 and the pressure roller 18.

【0010】この定着ユニット20とその駆動部とは、
定着ユニット20に設けられている位置決めピン12,
13が本体側板11の位置決め穴21に入り込むことに
よって位置決めされ、上記定着ギヤ5が本体側板11の
穴22から飛び出し、アイドラギヤ3と噛み合ってい
る。
The fixing unit 20 and its drive section are
Positioning pins 12 provided in the fixing unit 20,
The fixing gear 5 is positioned by being inserted into the positioning hole 21 of the body side plate 11, and the fixing gear 5 projects from the hole 22 of the body side plate 11 and meshes with the idler gear 3.

【0011】アイドラギヤ3は、図1及び図2に示すよ
うに、プーリギヤ1のプーリギヤ軸2に回転自在に装着
された支持板7に回転自在に支持され、該支持板7によ
ってプーリギヤ1とアイドラギヤ3との軸間で決められ
ている。従って、アイドラギヤ3は、プーリギヤ1に噛
み合って状態で、プーリギヤ1の軸心を中心として回動
可能となっている。
As shown in FIGS. 1 and 2, the idler gear 3 is rotatably supported by a support plate 7 rotatably mounted on the pulley gear shaft 2 of the pulley gear 1, and the support plate 7 supports the pulley gear 1 and the idler gear 3. It is decided between the axis and. Therefore, the idler gear 3 is rotatable around the shaft center of the pulley gear 1 while meshing with the pulley gear 1.

【0012】ここで、通常コピー時では駆動モータ10
がC方向へ回転されるため、プーリギヤ1は図2に示す
a方向に回転し、アイドラギヤ3に伝達される。このと
き、本発明ではプーリギヤ1からの駆動伝達により生ず
る圧力角θの作用で、アイドラギヤ3に定着ギヤ5に噛
み合う方向の回動力が付勢されるように、プーリギヤ1
及びアイドラギヤ3が歯形等が設定されている。本実施
例では、アイドラギヤ3がピッチ円の交点の接線から圧
力角θが20°でその方向にF1の力を受けるように設
定され、力F1によってアイドラギヤ3が自動的に定着
ギヤ5に噛み合う。そして、定着ギヤ5に噛み合い後の
アイドラギヤ3は上記プーリギヤ1と同様に定着ギヤ5
からF2の力を受けるため、プーリギヤ1は図2に示す
a方向に回転しているときにはアイドラギヤ3がF1
2の合力F3の力を常に受けるため、定着ギヤ5との噛
み合いが外れることがない。なお、アイドラギヤ3と定
着ギヤ5との軸間は図示していないピッチ円リング等で
位置決めされている。
Here, at the time of normal copying, the drive motor 10
Is rotated in the C direction, the pulley gear 1 rotates in the a direction shown in FIG. 2 and is transmitted to the idler gear 3. At this time, in the present invention, the pulley gear 1 is configured so that the rotational force in the direction in which the idler gear 3 meshes with the fixing gear 5 is urged by the action of the pressure angle θ generated by the drive transmission from the pulley gear 1.
The tooth profile of the idler gear 3 is set. In this embodiment, the idler gear 3 is set so as to receive a force of F 1 in that direction at a pressure angle θ of 20 ° from the tangent line of the intersection of the pitch circles, and the force F 1 causes the idler gear 3 to automatically move to the fixing gear 5. Mesh with each other. The idler gear 3 meshed with the fixing gear 5 is similar to the pulley gear 1 described above.
For receiving a force F 2 from, for always receives the force of the resultant force F 3 of the idler gear 3 is F 1 and F 2 when the pulley gear 1 is rotated in a direction shown in FIG. 2, but the engagement between the fixing gear 5 It does not come off. The shaft between the idler gear 3 and the fixing gear 5 is positioned by a pitch circle ring or the like (not shown).

【0013】次に、転写紙19が定着部でジャムしたと
きには駆動モータ10をC方向と逆方向に回転させる
と、図3に示すように、プーリギヤ1もa方向とは逆方
向のb方向に回転する。そして、アイドラギヤ3は圧力
角による作用によってプーリギヤ1と定着ギヤ5からそ
れぞれF4,F5の力を受け、その合力F6方向の回動力
を受ける。このとき、アイドラギヤ3は支持板7に回転
自在に支持されているので、図4に示すように、プーリ
ギヤ1の軸心を中心に回動して定着ギヤ5から外れる。
Next, when the transfer paper 19 is jammed at the fixing portion, the drive motor 10 is rotated in the direction opposite to the C direction, and as shown in FIG. 3, the pulley gear 1 is also moved in the b direction, which is the opposite direction to the a direction. Rotate. The idler gear 3 receives the forces of F 4 and F 5 from the pulley gear 1 and the fixing gear 5, respectively, by the action of the pressure angle, and receives the turning force in the resultant force F 6 direction. At this time, since the idler gear 3 is rotatably supported by the support plate 7, as shown in FIG. 4, the idler gear 3 is rotated about the shaft center of the pulley gear 1 and disengaged from the fixing gear 5.

【0014】かくして、プーリギヤ1を逆方向に回転さ
せるだけで、アイドラギヤ3が定着ギヤ5から外れ、定
着ローラ17がフリーの状態になるため、図示していな
い定着ローラ17の軸端に設けたノブなどを回動操作し
て定着ローラ17を回動させつつジャム紙を容易に除去
することができる。また、ジャム紙の処理を終えて再度
コピーするときにはプーリギヤ1がa方向に回転するの
で、上記の如くアイドラギヤ3が定着ギヤ5に自動的に
噛み合う。
Thus, since the idler gear 3 is disengaged from the fixing gear 5 and the fixing roller 17 is in a free state simply by rotating the pulley gear 1 in the opposite direction, a knob provided at the shaft end of the fixing roller 17 (not shown). The jammed paper can be easily removed while rotating the fixing roller 17 by rotating the fixing roller 17. Further, when the jammed paper is processed and copied again, the pulley gear 1 rotates in the a direction, so that the idler gear 3 automatically meshes with the fixing gear 5 as described above.

【0015】ところで、駆動モータ10は定着ユニット
20だけでなく、他のユニットにも駆動伝達させている
ことは多々あり、このとき他のユニットの関係で駆動モ
ータ10を逆方向に回転できない場合がある。例えば、
駆動モータ10を逆回転させると、クリーニングブレー
ドを巻き込んでしまう等のケースである。
By the way, the drive motor 10 often transmits the drive not only to the fixing unit 20 but also to other units. At this time, the drive motor 10 may not be able to rotate in the reverse direction due to the relationship of the other units. is there. For example,
This is a case where the cleaning blade is caught when the drive motor 10 is rotated in the reverse direction.

【0016】かかるケースにおいて、本発明はアイドラ
ギヤ3に定着ギヤ5との噛み合いが解除される方向の引
っ張り力を付勢する弾性手段としてのスプリング8を設
けている。本例の場合、図5に示すように、スプリング
8が支持板7に係止され、アイドラギヤ3が圧力角によ
る作用によって受ける力F3と反対方向に力F7がかかる
ように設けられている。このとき、スプリング8の引っ
張り力F7はプーリギヤ1の駆動伝達により生ずる圧力
角の回動力F1よりも小さい力になるように設定されて
いる。
In such a case, according to the present invention, the idler gear 3 is provided with the spring 8 as an elastic means for urging the pulling force in the direction in which the meshing with the fixing gear 5 is released. In this example, as shown in FIG. 5, the spring 8 is locked to the support plate 7, the idler gear 3 is provided so that a force F 3 in the opposite direction to the force F 7 for receiving the action of the pressure angle according . At this time, the tensile force F 7 for the spring 8 is set to be smaller force than rotating force F 1 of the pressure angle caused by the drive transmission pulley gear 1.

【0017】かく構成の駆動伝達機構は、通常コピー時
の駆動モータ10がC方向へ回転されるときには、プー
リギヤ1からの駆動伝達により生ずる圧力角の回動力で
アイドラギヤ3がスプリング8の引っ張り力F7に抗し
て定着ギヤ5に噛み合う。そして、定着ギヤ5に噛み合
い後はアイドラギヤ3がF1とF2の合力F3の力を受け
る。
In the drive transmission mechanism having such a structure, when the drive motor 10 during normal copying is rotated in the C direction, the idler gear 3 pulls the spring 8 with the pulling force F by the rotational force of the pressure angle generated by the drive transmission from the pulley gear 1. It meshes with the fixing gear 5 against 7 . After meshing with the fixing gear 5, the idler gear 3 receives the resultant force F 3 of F 1 and F 2 .

【0018】また、転写紙19が定着部でジャムしたと
きには駆動モータ10を停止することにより、図6に示
すように、圧力角の合力F3がなくなるので、アイドラ
ギヤ3がスプリング8の引っ張り力F7によってプーリ
ギヤ1の軸心を中心に回動し、図7に示すように、アイ
ドラギヤ3が定着ギヤ5から外れる。
When the transfer paper 19 is jammed at the fixing portion, the drive motor 10 is stopped to eliminate the resultant force F 3 of the pressure angle as shown in FIG. 6, so that the idler gear 3 pulls the spring 8 with a pulling force F 3. 7 rotates about the shaft center of the pulley gear 1, and the idler gear 3 disengages from the fixing gear 5 as shown in FIG.

【0019】かくして、プーリギヤ1を停止させるだけ
で、定着ローラ17がフリーの状態になり、ジャム紙を
容易に除去することができる。
Thus, simply by stopping the pulley gear 1, the fixing roller 17 becomes free, and the jammed paper can be easily removed.

【0020】[0020]

【発明の効果】請求項1の構成によれば、アイドラギヤ
が、駆動ギヤの回転中心を中心として回動可能であり、
アイドラギヤは駆動ギヤが正回転されたときに、圧力角
により生ずる回動力によって従動ギヤに噛み合い、駆動
ギヤが逆回転されたときに、圧力角により生ずる回動力
によって従動ギヤとの噛み合いが解除されるので、クラ
ッチや複雑な機構を使わずに駆動ギヤを正回転、逆回転
をさせるだけで駆動の接離が行うことができる。
According to the structure of claim 1, the idler gear is rotatable about the rotation center of the drive gear,
The idler gear meshes with the driven gear by the rotational force generated by the pressure angle when the drive gear rotates normally, and disengages from the driven gear by the rotational force generated by the pressure angle when the drive gear rotates reversely. Therefore, the drive can be brought into and out of contact by simply rotating the drive gear forward and backward without using a clutch or a complicated mechanism.

【0021】請求項2の構成によれば、アイドラギヤ
が、駆動ギヤの回転中心を中心として回動可能に支持さ
れ、該アイドラギヤに従動ギヤとの噛み合いが解除され
る方向の引っ張り力を付勢する弾性手段を設け、アイド
ラギヤは駆動ギヤが正回転されたときに、圧力角により
生ずる回動力によって従動ギヤに噛み合い、駆動ギヤが
停止されたとき、弾性手段の引っ張り力によって従動ギ
ヤとの噛み合いが解除されるので、駆動ギヤを逆回転で
きない場合であっても、スプリングを追加するだけで、
駆動モータの回転、停止からクラッチや複雑な機構を使
うことなく駆動の接離が行うことができる。
According to the second aspect of the invention, the idler gear is supported rotatably about the center of rotation of the drive gear, and applies a pulling force in a direction in which the idler gear is disengaged from the driven gear. Equipped with elastic means, the idler gear meshes with the driven gear by the rotating force generated by the pressure angle when the drive gear is rotated forward, and when the drive gear is stopped, the meshing with the driven gear is released by the pulling force of the elastic means. Therefore, even if you can not rotate the drive gear in reverse, just add a spring,
From rotation and stop of the drive motor, drive contact and separation can be performed without using a clutch or a complicated mechanism.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る駆動伝達機構を備えた定着装置及
び駆動部の一例を示す概略斜視図である。
FIG. 1 is a schematic perspective view showing an example of a fixing device and a drive unit including a drive transmission mechanism according to the present invention.

【図2】本発明の一実施例の駆動ギヤ正転時の作動を示
す説明図である。
FIG. 2 is an explanatory view showing the operation of the embodiment of the present invention during normal rotation of the drive gear.

【図3】本発明の一実施例の駆動ギヤ逆転時の作動を示
す説明図である。
FIG. 3 is an explanatory view showing the operation of the embodiment of the present invention when the drive gear rotates in the reverse direction.

【図4】本発明の一実施例のアイドラギヤが従動ギヤか
ら外れた状態を示す説明図である。
FIG. 4 is an explanatory diagram showing a state where an idler gear according to an embodiment of the present invention is disengaged from a driven gear.

【図5】本発明の他の実施例の駆動ギヤ正転時の作動を
示す説明図である。
FIG. 5 is an explanatory diagram showing the operation of the other embodiment of the present invention during normal rotation of the drive gear.

【図6】本発明の他の実施例の駆動ギヤ逆転時の作動を
示す説明図である。
FIG. 6 is an explanatory view showing the operation of the other embodiment of the present invention when the drive gear rotates in the reverse direction.

【図7】本発明の他の実施例のアイドラギヤが従動ギヤ
から外れた状態を示す説明図である。
FIG. 7 is an explanatory diagram showing a state where an idler gear according to another embodiment of the present invention is disengaged from a driven gear.

【符号の説明】[Explanation of symbols]

1 プーリギヤ(駆動ギヤ) 3 アイドラギヤ 5 定着ギヤ(従動ギヤ) 7 支持板 8 スプリング θ 圧力角 1 Pulley gear (driving gear) 3 Idler gear 5 Fixing gear (driven gear) 7 Support plate 8 Spring θ Pressure angle

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 駆動ギヤからアイドラギヤへ、該アイド
ラギヤから従動ギヤへ回転力を伝達する駆動伝達機構に
おいて、 前記アイドラギヤが、前記駆動ギヤの回転中心を中心と
して回動可能に支持され、前記アイドラギヤは前記駆動
ギヤが正回転されたときに、圧力角により生ずる回動力
によって前記従動ギヤに噛み合い、前記駆動ギヤが逆回
転されたときに、圧力角により生ずる回動力によって前
記従動ギヤとの噛み合いが解除されることを特徴とした
駆動伝達機構。
1. A drive transmission mechanism for transmitting a rotational force from a drive gear to an idler gear and from the idler gear to a driven gear, wherein the idler gear is rotatably supported about a rotation center of the drive gear, and the idler gear is When the drive gear is rotated in the forward direction, it meshes with the driven gear by the rotating force generated by the pressure angle, and when the drive gear is rotated in the reverse direction, the meshing with the driven gear is released by the rotating force generated by the pressure angle. A drive transmission mechanism characterized by being performed.
【請求項2】 駆動ギヤからアイドラギヤへ、該アイド
ラギヤから従動ギヤへ回転力を伝達する駆動伝達機構に
おいて、 前記アイドラギヤが、前記駆動ギヤの回転中心を中心と
して回動可能に支持され、該アイドラギヤに前記従動ギ
ヤとの噛み合いが解除される方向の引っ張り力を付勢す
る弾性手段を設け、前記アイドラギヤは前記駆動ギヤが
正回転されたときに、圧力角により生ずる回動力によっ
て前記従動ギヤに噛み合い、前記駆動ギヤが停止された
とき、前記弾性手段の引っ張り力によって前記従動ギヤ
との噛み合いが解除されることを特徴とした駆動伝達機
構。
2. A drive transmission mechanism for transmitting a rotational force from a drive gear to an idler gear and from the idler gear to a driven gear, wherein the idler gear is supported rotatably about a rotation center of the drive gear and is attached to the idler gear. Elastic means for urging a pulling force in a direction in which the meshing with the driven gear is released is provided, and the idler gear meshes with the driven gear by a rotational force generated by a pressure angle when the drive gear is normally rotated, A drive transmission mechanism characterized in that when the drive gear is stopped, the engagement with the driven gear is released by the pulling force of the elastic means.
JP7092816A 1995-04-18 1995-04-18 Drive transmission mechanism Pending JPH08285034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7092816A JPH08285034A (en) 1995-04-18 1995-04-18 Drive transmission mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7092816A JPH08285034A (en) 1995-04-18 1995-04-18 Drive transmission mechanism

Publications (1)

Publication Number Publication Date
JPH08285034A true JPH08285034A (en) 1996-11-01

Family

ID=14064956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7092816A Pending JPH08285034A (en) 1995-04-18 1995-04-18 Drive transmission mechanism

Country Status (1)

Country Link
JP (1) JPH08285034A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10207158A (en) * 1997-01-17 1998-08-07 Mita Ind Co Ltd Detent structure of rotary parts
JP2010048315A (en) * 2008-08-20 2010-03-04 Seiko Epson Corp Gear device and recording device equipped with the same
JP2010089325A (en) * 2008-10-07 2010-04-22 Brother Ind Ltd Printing apparatus
JP2010089326A (en) * 2008-10-07 2010-04-22 Kyocera Mita Corp Automatic cleaning mechanism, optical scanning device having the same, and image formation apparatus
US7793933B2 (en) 2008-01-22 2010-09-14 Sharp Kabushiki Kaisha Drive transmission mechanism of sheet transportation apparatus and document transportation apparatus
JP2014021378A (en) * 2012-07-20 2014-02-03 Brother Ind Ltd Gear transmission device and image forming device
JP2015152613A (en) * 2014-02-10 2015-08-24 キヤノン株式会社 image forming apparatus
JP2018119546A (en) * 2017-01-20 2018-08-02 国立研究開発法人宇宙航空研究開発機構 Kinetic energy generation mechanism and jumping robot using the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10207158A (en) * 1997-01-17 1998-08-07 Mita Ind Co Ltd Detent structure of rotary parts
US7793933B2 (en) 2008-01-22 2010-09-14 Sharp Kabushiki Kaisha Drive transmission mechanism of sheet transportation apparatus and document transportation apparatus
JP2010048315A (en) * 2008-08-20 2010-03-04 Seiko Epson Corp Gear device and recording device equipped with the same
JP2010089325A (en) * 2008-10-07 2010-04-22 Brother Ind Ltd Printing apparatus
JP2010089326A (en) * 2008-10-07 2010-04-22 Kyocera Mita Corp Automatic cleaning mechanism, optical scanning device having the same, and image formation apparatus
JP2014021378A (en) * 2012-07-20 2014-02-03 Brother Ind Ltd Gear transmission device and image forming device
JP2015152613A (en) * 2014-02-10 2015-08-24 キヤノン株式会社 image forming apparatus
JP2018119546A (en) * 2017-01-20 2018-08-02 国立研究開発法人宇宙航空研究開発機構 Kinetic energy generation mechanism and jumping robot using the same

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