JP2003343661A - Driving unit - Google Patents

Driving unit

Info

Publication number
JP2003343661A
JP2003343661A JP2002155010A JP2002155010A JP2003343661A JP 2003343661 A JP2003343661 A JP 2003343661A JP 2002155010 A JP2002155010 A JP 2002155010A JP 2002155010 A JP2002155010 A JP 2002155010A JP 2003343661 A JP2003343661 A JP 2003343661A
Authority
JP
Japan
Prior art keywords
housing
gear
drive unit
shaft
gears
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
JP2002155010A
Other languages
Japanese (ja)
Inventor
Iwao Matsumae
巌 松前
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 JP2002155010A priority Critical patent/JP2003343661A/en
Publication of JP2003343661A publication Critical patent/JP2003343661A/en
Pending legal-status Critical Current

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  • Electrophotography Configuration And Component (AREA)
  • Gear Transmission (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving unit which eliminates positional displacement of a rotating shaft and backlash of a support part, and stabilizes rotation accuracy. <P>SOLUTION: In the driving unit, a housing 200 for holding the rotating shaft turnable integrally with a gear and a bearing member and a housing 1 molded integrally with a shaft for holding the gear or the like are combined by engagement or the like to constitute a series of gears, and the housings 1 and 200 have a mutual relation. In the housing 1, bosses 11 and 12 for positioning and inserting a motor 2 and fixing shafts 13, 14, and 16 for turning and supporting reduction gears 3 and 4 and an idler gear 6 are integrally molded with resin. The driving housing 200 supports two rotating shafts 50 and 70. The shaft 50 is supported by bearings 54 and 57, the shaft 70 is supported by bearings 74 and 76, and respective bearings are engaged with body casing 9 constituting the device body or the like of an image forming device and the housings 200. <P>COPYRIGHT: (C)2004,JPO

Description

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

【0001】[0001]

【発明の属する技術分野】本発明は、ユニットないしロ
ーラ類を軸継ぎ手で接続して駆動したり、ギヤ列中にク
ラッチを配置したりした、回動自在な軸を駆動ギヤ列中
に配置した装置の駆動ユニットに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a rotatable shaft arranged in a drive gear train, in which units or rollers are connected and driven by a shaft coupling and a clutch is arranged in the gear train. It relates to a drive unit of the device.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】従来の
この種の駆動ユニットにおいては、継手を先端に有する
回転軸を、ハウジングの鉛直方向底面に対して水平に保
持することが難しかった。具体的には、軸と軸受の間の
ガタ、軸受とハウジングの間にガタが存在するために回
転軸が重力で垂れ下がってしまうことがあった。このよ
うな状態が生じると、本体フレームに軸を嵌合すること
が困難になり、これによって駆動ユニットの組付け作業
性が損なわれていた。また、本体フレームと、それに保
持する軸受との間のガタも、組付け作業性を考慮すると
ゼロにはできず、回転軸の軸心のブレの原因となってい
た。
2. Description of the Related Art In a conventional drive unit of this type, it was difficult to hold a rotary shaft having a joint at its tip horizontally with respect to a vertical bottom surface of a housing. Specifically, since there is play between the shaft and the bearing and between the bearing and the housing, the rotating shaft may hang down due to gravity. When such a state occurs, it becomes difficult to fit the shaft to the main body frame, which impairs the workability of assembling the drive unit. Further, the play between the main body frame and the bearings held by the main frame cannot be reduced to zero in consideration of workability in assembling, which causes a deviation of the axis of the rotary shaft.

【0003】本出願は、駆動機構側の部品(回転軸、ギ
ヤ、軸受など)を一体的に保持する駆動ユニットの着脱
操作、組付け操作を容易化すること、及び回転軸の位置
ズレや支持部のガタを解消し、回転精度を安定化するこ
とができる駆動ユニットを提供することを目的とする。
This application is intended to facilitate the attachment / detachment operation and the assembling operation of the drive unit for integrally holding the parts on the drive mechanism side (the rotary shaft, the gear, the bearing, etc.), and the displacement and support of the rotary shaft. It is an object of the present invention to provide a drive unit that eliminates rattling of a portion and stabilizes rotation accuracy.

【0004】但し、本発明の駆動ユニットとは、駆動要
素の両面を板状部材等で挟んだ「閉じた」ユニットでは
なく、ハウジングの軸に少なくとも1つ以上の駆動要素
(ギヤ、プーリ等)を通したままの状態で装置本体ある
いは装置筐体に着脱するユニットを言う。
However, the drive unit of the present invention is not a "closed" unit in which both sides of the drive element are sandwiched by plate-shaped members or the like, but at least one drive element (gear, pulley, etc.) on the shaft of the housing. A unit that is attached to and detached from the apparatus main body or the apparatus casing while being passed through.

【0005】[0005]

【課題を解決するための手段】本発明の請求項1に係る
駆動ユニットは、上記目的を達成するために、ギヤやプ
ーリなどと一体的に回動自在な回転軸を有する駆動ユニ
ットであって、該回転軸及び軸受部材を保持する一の筐
体と、ギヤなどを保持する軸を一体的に成形した他の筐
体とを有し、これら筐体を嵌合固定することにより一連
のギヤ列を形成してなることを特徴とする。
In order to achieve the above-mentioned object, a drive unit according to claim 1 of the present invention is a drive unit having a rotatable shaft integrally rotatable with a gear, a pulley and the like. A housing for holding the rotating shaft and the bearing member, and another housing integrally formed with a shaft for holding a gear and the like, and a series of gears by fitting and fixing these housings. It is characterized by forming rows.

【0006】同請求項2に係るものは、上記目的を達成
するために、請求項1の駆動ユニットにおいて、上記一
の筐体が複数の回転軸を保持することを特徴とする。
According to a second aspect of the present invention, in order to achieve the above object, the drive unit according to the first aspect is characterized in that the one casing holds a plurality of rotating shafts.

【0007】同請求項3に係るものは、上記目的を達成
するために、請求項2の駆動ユニットにおいて、上記一
の筐体が保持する一または複数の回転軸と一体化したギ
ヤを、上記他の筐体に保持した一または複数のギヤと連
結させ、かつ上記一の筐体と上記他の筐体を嵌合する
際、上記一の筐体側の一のギヤに連結する上記他の筐体
側の一のギヤが触れるタイミングと、上記一の筐体側の
他のギヤに連結する上記他の筐体側の他のギヤが触れる
タイミングとが異なる位置関係としてなることを特徴と
する。
According to a third aspect of the present invention, in order to achieve the above object, in the drive unit of the second aspect, the gear integrated with one or a plurality of rotating shafts held by the one casing is The other casing that is coupled to one or a plurality of gears held in another casing and that is coupled to the one gear on the one casing side when the one casing is fitted to the other casing It is characterized in that the timing of touching one gear on the body side and the timing of touching another gear on the other casing connected to the other gear on the one casing have different positional relationships.

【0008】同請求項4に係るものは、上記目的を達成
するために、請求項3の駆動ユニットにおいて、上記一
の筐体と上記他の筐体を嵌合する際に触れ合う側のギヤ
歯の高さをテーパ状に低めてなることを特徴とする。
According to a fourth aspect of the present invention, in order to achieve the above object, in the drive unit according to the third aspect, the gear teeth on the side to be brought into contact with each other when the one casing and the other casing are fitted to each other. It is characterized in that the height of is reduced to a taper shape.

【0009】同請求項5に係るものは、上記目的を達成
するために、請求項1ないし4のいずれかの駆動ユニッ
トにおいて、上記一の筐体と上記他の筐体の嵌合部に設
ける穴の内周に、上記両筐体の嵌合動作により変形可能
な微小突起を設けてなることを特徴とする。
According to a fifth aspect of the present invention, in order to achieve the above object, the drive unit according to any one of the first to fourth aspects is provided at a fitting portion of the one casing and the other casing. It is characterized in that the inner periphery of the hole is provided with a minute protrusion which can be deformed by the fitting operation of the both cases.

【0010】[0010]

【発明の実施の形態】以下本発明の実施の形態を図面を
参照して説明する。なお以下では、本発明に係る駆動ユ
ニットを画像形成装置に実施した例について説明するが
本発明はこれに限定されず、種々の装置に適用可能であ
る。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. An example in which the drive unit according to the present invention is implemented in an image forming apparatus will be described below, but the present invention is not limited to this and can be applied to various apparatuses.

【0011】本実施形態に係る駆動ユニットは、ギヤと
一体的に回動自在な回転軸及び軸受部材を保持するハウ
ジング200と、ギヤなどを保持する軸を一体的に成形
したハウジング1とを嵌合により組み合わせて一連のギ
ヤ列を構成し、ハウジング1、200同士に関係を持た
せている。
The drive unit according to the present embodiment fits a housing 200 holding a rotating shaft and a bearing member which are rotatable integrally with a gear, and a housing 1 integrally formed with a shaft holding a gear and the like. Depending on the combination, a series of gear trains are formed, and the housings 1 and 200 are related to each other.

【0012】ハウジング1は、図1ないし図4に示すよ
うに、モータ2を位置決め挿入するためのボス11と、
それをネジ締めするためのボス12を4ヶ所に有すると
ともに、減速ギヤ3、4及びアイドラギヤ6を回動支持
する固定軸13、14、16を樹脂で一体成形してあ
る。
As shown in FIGS. 1 to 4, the housing 1 includes a boss 11 for positioning and inserting the motor 2.
The bosses 12 for screwing the screws are provided at four places, and the fixed shafts 13, 14 and 16 for rotatably supporting the reduction gears 3 and 4 and the idler gear 6 are integrally formed of resin.

【0013】駆動ハウジング200は、2本の回転軸5
0、70を支持しており、回転軸50はギヤ5とピン5
8でもって一体回転するものであり、ギヤ5に隣接する
止め輪56と、その内側に止め輪55と軸受54と圧縮
スプリング53で付勢された継手51を一体化してあ
る。継手51は、止め輪52によって回転軸50から離
脱しないようになっている。一方、回転軸70は、ギヤ
7とピン78でもって一体回転するものであり、かつギ
ヤ7と止め輪75を挟んで軸受74を有し、さらにその
先には、圧縮バネ73で付勢した継手71を止め輪72
で一体的に支持している。
The drive housing 200 includes two rotary shafts 5.
0 and 70 are supported, and the rotary shaft 50 has a gear 5 and a pin 5
8, a retaining ring 56 adjacent to the gear 5, a retaining ring 55, a bearing 54, and a joint 51 urged by a compression spring 53 are integrated therein. The joint 51 is configured so as not to be separated from the rotary shaft 50 by the retaining ring 52. On the other hand, the rotating shaft 70 is integrally rotated by the gear 7 and the pin 78, and has a bearing 74 with the gear 7 and the retaining ring 75 sandwiched therebetween, and further, a compression spring 73 urges the bearing 74. Fitting 71 and snap ring 72
It supports in one.

【0014】軸50は、軸受54、57で、軸70は軸
受74、76で支持してあり、各軸受は、図示しない画
像形成装置の装置本体を構成する本体筐体9とハウジン
グ200にそれぞれ嵌合させるようになっている。な
お、各軸受のツバはいずれも内側(ギヤを保持している
側)に配置し、本体筐体9とハウジング200で挟むよ
うになっており、軸50については止め輪55とギヤ5
の右端が、軸70については止め輪75とギヤ7の右端
がズレ止めの役目を果たしている。
The shaft 50 is supported by bearings 54 and 57, and the shaft 70 is supported by bearings 74 and 76. The bearings are respectively provided in a main body casing 9 and a housing 200 which constitute the main body of the image forming apparatus (not shown). It is designed to fit. It should be noted that the flanges of the respective bearings are arranged inside (on the side that holds the gear) and sandwiched between the main body housing 9 and the housing 200. For the shaft 50, the retaining ring 55 and the gear 5 are provided.
The right end of the shaft 70 serves as a stopper for the shaft 70 and the right end of the gear 7 serves as a stopper.

【0015】図5、図6をも参照して本実施形態の駆動
ユニットの組み付け方法を説明する。まず、ギヤ5、7
と一体になった軸50、70を、軸受54、74を介し
て本体筐体9の嵌合穴95、97に挿入する。但しこの
状態では、回転軸50、70の図中右端が重力で垂れ下
がる。その原因は、既述のように軸と軸受のガタ、軸受
と本体筐体9のガタをゼロにできないためで、僅かなガ
タ量が図中右端では数ミリになる。
A method of assembling the drive unit according to the present embodiment will be described with reference to FIGS. First, gears 5, 7
The shafts 50 and 70 integrated with the above are inserted into the fitting holes 95 and 97 of the main body casing 9 through the bearings 54 and 74. However, in this state, the right ends of the rotary shafts 50 and 70 in the figure hang down due to gravity. The cause is that the play of the shaft and the bearing and the play of the bearing and the main body housing 9 cannot be made zero as described above, and the slight play amount becomes several millimeters at the right end in the figure.

【0016】ついで軸受57、76を軸50、70に通
し、ハウジング200を被せ、ネジで固定する。すなわ
ち、ハウジング200の穴205、207を回転軸の軸
受57、76に位置合わせした状態で、本体筐体9のボ
ス98にネジ締め固定する。なお、軸受57、76を先
にハウジング200に嵌合しても構わない。そして、ハ
ウジング200の凸状円周部215、217に合わせて
ハウジング1の穴105、107を通し、本体筐体9に
ネジ止めする。ここで、ハウジング200の凸状円周部
215、217の軸受57、76の嵌合穴205、20
7とは同心円になっている。
Then, the bearings 57 and 76 are passed through the shafts 50 and 70, the housing 200 is covered, and the screws are fixed. That is, the holes 205 and 207 of the housing 200 are aligned with the bearings 57 and 76 of the rotary shaft, and fixed to the boss 98 of the main body housing 9 by screwing. The bearings 57 and 76 may be fitted into the housing 200 first. Then, the holes 105 and 107 of the housing 1 are passed through in accordance with the convex circumferential portions 215 and 217 of the housing 200, and the main body housing 9 is screwed. Here, the fitting holes 205 and 20 of the bearings 57 and 76 of the convex circumferential portions 215 and 217 of the housing 200, respectively.
7 and are concentric circles.

【0017】ところで、ハウジング200、1(または
軸受54、76とハウジング200)の嵌め合い寸法
は、所定の公差に設定すれば、十分なものが得られる
が、なお厳しいもの(ガタつき=ゼロ)を求めるため
に、ハウジング1の穴105、107(及びハウジング
200の穴205、207)の内周面に幅0.3mm、
高さ0.2mm程度の容易につぶれるリブRを設けても
良い(図7参照)。
By the way, if the fitting dimensions of the housings 200, 1 (or the bearings 54, 76 and the housing 200) are set to a predetermined tolerance, a sufficient one can be obtained, but a severe one (rattle = zero). In order to obtain the value of 0.3 mm on the inner peripheral surface of the holes 105 and 107 of the housing 1 (and the holes 205 and 207 of the housing 200),
A rib R having a height of about 0.2 mm and easily collapsed may be provided (see FIG. 7).

【0018】固定軸13、14、16にギヤ3、4、6
を通されたハウジング1は、各軸の先端を本体筐体9の
ボス部93、94、96に嵌合させ、ネジ92によりハ
ウジング1を筐体9のネジ穴ボス部91にネジ締め結合
する。
Gears 3, 4, 6 are attached to the fixed shafts 13, 14, 16.
The end of each shaft of the housing 1 passed through is fitted into the boss portions 93, 94, 96 of the main body housing 9, and the housing 1 is screwed and coupled to the screw hole boss portion 91 of the housing 9 with the screw 92. .

【0019】図8(A)、(B)は、ハウジング200
の正面図、上面図である。ハウジング20には切欠き2
00a、200bが設けてあり、夫々ギヤ5、7が露出
している。これら切欠き200a、200bは、ハウジ
ング1の装着に伴い、夫々ギヤ4、6と順次噛み合わせ
るためのものである。
8A and 8B show a housing 200.
2A is a front view and FIG. 2 cutouts on housing 20
00a and 200b are provided, and the gears 5 and 7 are exposed, respectively. The notches 200a and 200b are for sequentially meshing with the gears 4 and 6 as the housing 1 is mounted.

【0020】なお図5は、ハウジング1のギヤ4がハウ
ジング200のギヤ5にまさに噛み合う寸前の状態図、
図6は、ハウジング1のギヤ6がハウジング200のギ
ヤ7に噛み合う寸前の状態図である。図6では、既にギ
ヤ4とギヤ5は噛み合っているため、組み付けが容易で
ある。もし、2つのギヤが同時に噛み合うことになる
と、2組のギヤの噛み合わせ(位置合わせ)を同時に行
なわねばならなくなり、組付けが困難になるばかりでな
く、ギヤ端の破損に至る恐れがある。
FIG. 5 is a state diagram in which the gear 4 of the housing 1 is about to mesh with the gear 5 of the housing 200.
FIG. 6 is a state diagram in which the gear 6 of the housing 1 is about to mesh with the gear 7 of the housing 200. In FIG. 6, since the gear 4 and the gear 5 have already meshed with each other, the assembly is easy. If the two gears are meshed at the same time, the meshing (positioning) of the two sets of gears must be performed at the same time, which not only makes the assembling difficult but also may damage the gear ends.

【0021】そして図9に示すように、回転軸50、7
0の本体筐体9側に設けた継手51、71は、それぞれ
感光体ユニット500の感光体ドラムフランジ継手50
2及び現像ユニット700の現像ローラ継手702と噛
み合う。両ユニット500、700は、ハウジング1よ
り遠い方から近づく方(図中右向きの矢印方向)に装着
する構成となっている。
Then, as shown in FIG. 9, the rotary shafts 50, 7
The joints 51 and 71 provided on the main body casing 9 side of the photosensitive drum unit 50 of the photosensitive drum unit 500 are respectively
2 and the developing roller joint 702 of the developing unit 700. Both units 500 and 700 are configured to be mounted from the side farther from the housing 1 (the direction of the arrow pointing to the right in the figure).

【0022】図10(A)はフランジ継手502を回転
軸50側から見た図、図10(B)は継手702を回転
軸70側から見た図、図10(C)は感光体ドラムに接
するアース端子504、505の斜視図である。このよ
うな軸継ぎ手構成にすることにより、ユニット500、
700とも、装着時にお互いの継手の先端同士が衝突し
ても、圧縮スプリング53、73の働きにより、過大な
負荷なく正規の位置まで移動が可能であり、且つ、モー
タの回転がスタートすれば、駆動ユニット側の継手が正
規の位置に(軸方向)移動し、駆動回転が伝達されるよ
うになっている。
10A is a view of the flange joint 502 viewed from the rotary shaft 50 side, FIG. 10B is a view of the joint 702 viewed from the rotary shaft 70 side, and FIG. 10C is a photosensitive drum. It is a perspective view of the earth terminals 504 and 505 which contact. With such a shaft coupling structure, the unit 500,
Even with the 700, even if the tips of the respective joints collide with each other when mounted, the compression springs 53 and 73 can move to a proper position without an excessive load, and if the rotation of the motor starts, The joint on the drive unit side is moved to the proper position (axial direction), and the drive rotation is transmitted.

【0023】なお、図3等から明らかなように、ギヤ
5、7、またはそれらと連結するハウジング1側のギヤ
4、6の一端(ハウジング1をハウジング200に挿入
する際に触れ合う側)のギヤ歯の高さをテーパ状に低め
て、ギヤの連結、組み付け時にギヤの端面同士が衝突し
なないようにしてある。
As is apparent from FIG. 3 and the like, the gears 5 and 7 or the gears 4 and 6 on the side of the housing 1 that are connected to the gears 5 and 7 (the ones that come into contact when the housing 1 is inserted into the housing 200). The tooth height is tapered so that the end faces of the gears do not collide with each other when the gears are connected and assembled.

【0024】[0024]

【発明の効果】請求項1の駆動ユニットにおいては、ギ
ヤやプーリなどと一体的に回動自在な回転軸を有する駆
動ユニットであって、該回転軸及び軸受部材を保持する
一の筐体と、ギヤなどを保持する軸を一体的に成形した
他の筐体とを有し、これら筐体を嵌合固定することによ
り一連のギヤ列を形成してなるので、組み付け工程時の
作業が容易になり、市場での作業(カスタマーエンジニ
ア等による)も安定化するとともに、回転軸やギヤの軸
心のズレを防止し、駆動精度を向上できるという効果が
ある。
According to the drive unit of the present invention, a drive unit having a rotatable shaft integrally rotatable with a gear, a pulley and the like, and a housing for holding the rotary shaft and a bearing member is provided. , Has a case that is integrally molded with the shaft that holds gears, etc., and a series of gear trains are formed by fitting and fixing these cases, making the work during the assembly process easy. Therefore, the work in the market (by a customer engineer or the like) is stabilized, the displacement of the axis of the rotary shaft and the gear is prevented, and the driving accuracy can be improved.

【0025】請求項2の駆動ユニットにおいては、一の
筐体が複数の回転軸を保持するようにしたことにより、
上記請求項1との共通の効果に加え、回転軸間の相対位
置関係をより精確なものとすることができるようになる
という効果がある。
In the drive unit according to the second aspect, one housing holds a plurality of rotary shafts,
In addition to the effect common to the first aspect, there is an effect that the relative positional relationship between the rotary shafts can be made more accurate.

【0026】請求項3の駆動ユニットにおいては、一の
筐体が保持する一または複数の回転軸と一体化したギヤ
を、他の筐体に保持した一または複数のギヤと連結さ
せ、かつ一の筐体と他の筐体を嵌合する際、一の筐体側
の一のギヤに連結する他の筐体側の一のギヤが触れるタ
イミングと、一の筐体側の他のギヤに連結する他の筐体
側の他のギヤが触れるタイミングとが異なるように位置
関係を構成したことにより、上記請求項2との共通の効
果に加え、組み付け工程時の作業がより容易になり、安
定化するという効果がある。
According to another aspect of the drive unit of the present invention, a gear integrated with one or a plurality of rotating shafts held by one housing is connected to one or a plurality of gears held by another housing, and When fitting the case of another case to the case of another case, the timing when one gear on the side of one case touches the one gear on the side of another case and the timing of connecting to the other gear on the side of one case Since the positional relationship is configured such that the timing with which the other gear on the housing side touches is different, in addition to the effect common to claim 2, the work during the assembling process becomes easier and stable. effective.

【0027】請求項4の駆動ユニットにおいては、一の
筐体と他の筐体を嵌合する際に触れ合う側のギヤ歯の高
さをテーパ状に低めてなることにより、上記請求項3と
の共通の効果に加え、ギヤと被駆動ギヤの連結、組み付
け時の端面同士の衝突がなくなり、ギヤ端面の破損が防
止でき、組み付け工程時の作業がいっそう容易になると
いう効果がある。
In the drive unit according to claim 4, the height of the gear teeth on the side to be brought into contact with each other when fitting the one housing and the other housing is lowered in a tapered shape, whereby the drive unit according to the above-mentioned third embodiment is provided. In addition to the common effects of the above, there is an effect that the gear and the driven gear are connected, collision between the end faces at the time of assembling is eliminated, damage of the gear end face can be prevented, and work at the time of assembling process is further facilitated.

【0028】請求項5の駆動ユニットにおいては、一の
筐体と他の筐体の嵌合部に設ける穴の内周に、両筐体の
嵌合動作により変形可能な微小突起を設けてなることに
より、上記共通の効果に加え、両者間の嵌合部のガタが
解消でき、駆動時の振動が抑えられ、騒音の低減、画像
の高画質化を図れるという効果がある。
According to another aspect of the drive unit of the present invention, minute protrusions that can be deformed by the fitting operation of the two housings are provided on the inner circumference of the holes provided in the fitting portions of the one housing and the other housing. As a result, in addition to the common effects described above, there is an effect that play in the fitting portion between them can be eliminated, vibration during driving can be suppressed, noise can be reduced, and image quality can be improved.

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

【図1】本発明に係る駆動ユニットの一実施形態の正面
図である。
FIG. 1 is a front view of an embodiment of a drive unit according to the present invention.

【図2】同側面断面図である。FIG. 2 is a side sectional view of the same.

【図3】図1、図2に示す駆動ユニットを画像形成装置
の本体筐体に装着する状態を示す側面断面図である。
FIG. 3 is a side sectional view showing a state in which the drive unit shown in FIGS. 1 and 2 is mounted in a main body casing of the image forming apparatus.

【図4】図1、図2に示す駆動ユニットを画像形成装置
の本体筐体に装着した状態を示す側面断面図である。
FIG. 4 is a side sectional view showing a state in which the drive unit shown in FIGS. 1 and 2 is attached to a main body casing of the image forming apparatus.

【図5】図1、図2に示す駆動ユニットを画像形成装置
の本体筐体に装着する途中状態を示す側面断面図であ
る。
FIG. 5 is a side sectional view showing a state in which the drive unit shown in FIGS. 1 and 2 is being attached to the main body casing of the image forming apparatus.

【図6】図1、図2に示す駆動ユニットを画像形成装置
の本体筐体に装着する途中状態を示す側面断面図であ
る。
FIG. 6 is a side sectional view showing a state in which the drive unit shown in FIGS. 1 and 2 is being attached to the main body casing of the image forming apparatus.

【図7】図1、図2に示す駆動ユニットのハウジングの
穴に設けるリブを示す斜視図である。
7 is a perspective view showing a rib provided in a hole of a housing of the drive unit shown in FIGS. 1 and 2. FIG.

【図8】図1、図2に示す駆動ユニットのハウジングの
構造を示す正面図(A)と断面図(B)である。
8 is a front view (A) and a sectional view (B) showing a structure of a housing of the drive unit shown in FIGS. 1 and 2. FIG.

【図9】画像形成装置の本体筐体に装着した図1、図2
に示す駆動ユニットを感光体ユニット及び現像ユニット
に連結する状態を示す側面断面図である。
9A and 9B are mounted in a main body casing of the image forming apparatus.
FIG. 3 is a side cross-sectional view showing a state in which the drive unit shown in FIG. 3 is connected to a photoconductor unit and a developing unit.

【図10】図9に示す感光体ユニットの継手の構造を示
す正面図(A、B)及び感光体ドラムに接するアース端
子の斜視図(C)である。
10 is a front view (A, B) showing a structure of a joint of the photoconductor unit shown in FIG. 9 and a perspective view (C) of a ground terminal in contact with the photoconductor drum.

【符号の説明】[Explanation of symbols]

1 ハウジング 2 モータ 3、4 減速ギヤ 5 ギヤ 6 アイドラギヤ 7 ギヤ 9 本体筐体 11、12 ボス 13、14、16 固定軸 50、70 回転軸 51、71 継手 52 止め輪 53 圧縮スプリング 54、57、74、76 軸受 55、56、72、75 止め輪 58 ピン 73 圧縮バネ 91 ネジ穴ボス部 92 ネジ 93、94、96 ボス部 95、97 嵌合穴 98 ボス 105、107、205、207 穴 200 ハウジング 200a、200b 切欠き 215、217 凸状円周部 500 感光体ユニット 502 感光体ドラムフランジ継手 504、505 アース端子 700 現像ユニット R リブ 1 housing 2 motor 3, 4 reduction gear 5 gears 6 idler gear 7 gears 9 Main body housing 11, 12 boss 13, 14, 16 fixed shaft 50, 70 rotation axis 51, 71 joint 52 snap ring 53 Compression spring 54, 57, 74, 76 bearings 55, 56, 72, 75 retaining ring 58 pin 73 Compression spring 91 Screw hole boss 92 screws 93, 94, 96 Boss 95, 97 Mating hole 98 Boss 105, 107, 205, 207 holes 200 housing 200a, 200b Notch 215, 217 convex circumference 500 photoconductor unit 502 Photoconductor drum flange joint 504, 505 Ground terminal 700 development unit R rib

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2H171 FA02 FA04 FA30 GA13 GA15 JA14 JA48 KA12 KA22 KA23 KA26 LA04 LA08 LA13 LA17 PA13 PA14 XA13 XA15 XA16 3J009 DA12 DA16 EA05 EA12 EA21 EA35 EA42 EB24 EC02 EC06 FA16    ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2H171 FA02 FA04 FA30 GA13 GA15                       JA14 JA48 KA12 KA22 KA23                       KA26 LA04 LA08 LA13 LA17                       PA13 PA14 XA13 XA15 XA16                 3J009 DA12 DA16 EA05 EA12 EA21                       EA35 EA42 EB24 EC02 EC06                       FA16

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 ギヤやプーリなどと一体的に回動自在な
回転軸を有する駆動ユニットであって、該回転軸及び軸
受部材を保持する一の筐体と、ギヤなどを保持する軸を
一体的に成形した他の筐体とを有し、これら筐体を嵌合
固定することにより一連のギヤ列を形成してなることを
特徴とする駆動ユニット。
1. A drive unit having a rotating shaft that is rotatable integrally with a gear, a pulley, and the like, wherein a housing holding the rotating shaft and a bearing member and a shaft holding the gear are integrated. Drive unit characterized in that the drive unit has another casing that is formed in a desired manner, and a series of gear trains are formed by fitting and fixing these casings.
【請求項2】 請求項1の駆動ユニットにおいて、上記
一の筐体が複数の回転軸を保持することを特徴とする駆
動ユニット。
2. The drive unit according to claim 1, wherein the one housing holds a plurality of rotation shafts.
【請求項3】 請求項2の駆動ユニットにおいて、上記
一の筐体が保持する一または複数の回転軸と一体化した
ギヤを、上記他の筐体に保持した一または複数のギヤと
連結させ、かつ上記一の筐体と上記他の筐体を嵌合する
際、上記一の筐体側の一のギヤに連結する上記他の筐体
側の一のギヤが触れるタイミングと、上記一の筐体側の
他のギヤに連結する上記他の筐体側の他のギヤが触れる
タイミングとが異なる位置関係としてなることを特徴と
する駆動ユニット。
3. The drive unit according to claim 2, wherein a gear integrated with one or a plurality of rotation shafts held by the one housing is connected to one or a plurality of gears held by the other housing. And when fitting the one housing and the other housing, the timing at which the one gear on the other housing side, which is connected to the one gear on the one housing side, touches the one housing side and the one housing side A drive unit having a different positional relationship from the timing at which the other gear on the side of the other casing connected to the other gear of the other comes into contact with the other gear.
【請求項4】 請求項3の駆動ユニットにおいて、上記
一の筐体と上記他の筐体を嵌合する際に触れ合う側のギ
ヤ歯の高さをテーパ状に低めてなることを特徴とする駆
動ユニット。
4. The drive unit according to claim 3, wherein the height of the gear teeth on the side that comes into contact when the one housing and the other housing are fitted is tapered. Drive unit.
【請求項5】 請求項1ないし4のいずれかの駆動ユニ
ットにおいて、上記一の筐体と上記他の筐体の嵌合部に
設ける穴の内周に、上記両筐体の嵌合動作により変形可
能な微小突起を設けてなることを特徴とする駆動ユニッ
ト。
5. The drive unit according to any one of claims 1 to 4, wherein the two housings are fitted to an inner periphery of a hole provided in a fitting portion of the one housing and the other housing. A drive unit comprising a deformable microprojection.
JP2002155010A 2002-05-29 2002-05-29 Driving unit Pending JP2003343661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002155010A JP2003343661A (en) 2002-05-29 2002-05-29 Driving unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002155010A JP2003343661A (en) 2002-05-29 2002-05-29 Driving unit

Publications (1)

Publication Number Publication Date
JP2003343661A true JP2003343661A (en) 2003-12-03

Family

ID=29771628

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002155010A Pending JP2003343661A (en) 2002-05-29 2002-05-29 Driving unit

Country Status (1)

Country Link
JP (1) JP2003343661A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2202583A1 (en) * 2008-12-23 2010-06-30 Sagem Communications Sas Coupling arrangement
JP2016151675A (en) * 2015-02-17 2016-08-22 キヤノン株式会社 Image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2202583A1 (en) * 2008-12-23 2010-06-30 Sagem Communications Sas Coupling arrangement
JP2016151675A (en) * 2015-02-17 2016-08-22 キヤノン株式会社 Image forming apparatus

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