JPH0650406A - Power transmission device - Google Patents
Power transmission deviceInfo
- Publication number
- JPH0650406A JPH0650406A JP4224800A JP22480092A JPH0650406A JP H0650406 A JPH0650406 A JP H0650406A JP 4224800 A JP4224800 A JP 4224800A JP 22480092 A JP22480092 A JP 22480092A JP H0650406 A JPH0650406 A JP H0650406A
- Authority
- JP
- Japan
- Prior art keywords
- tooth
- gear
- teeth
- power transmission
- transmission device
- 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
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Transmission Devices (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、複写機,ファクシミ
リ,プリンタ,電子ファイル等の事務機器の給紙ローラ
駆動系等に用いられる動力伝達装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission device used in a paper feed roller drive system for office machines such as copying machines, facsimiles, printers and electronic files.
【0002】[0002]
【従来の技術】図8,図9は従来例を示している。図に
おいて100は第一歯車としての駆動歯車であり、駆動
歯車100は軸101を中心として図中時計方向に回転
する。歯車100は複数の歯104を有する。2. Description of the Related Art FIGS. 8 and 9 show a conventional example. In the figure, 100 is a drive gear as a first gear, and the drive gear 100 rotates about a shaft 101 in the clockwise direction in the figure. The gear 100 has a plurality of teeth 104.
【0003】また、102は第二歯車としての従動歯車
であり、従動歯車102は軸103に固定してある。従
動歯車102は複数の歯105と欠歯部106とを有す
る。Further, 102 is a driven gear as a second gear, and the driven gear 102 is fixed to a shaft 103. The driven gear 102 has a plurality of teeth 105 and a toothless portion 106.
【0004】また、従動歯車102にはカム107を一
体的に成形してある。カム107は係止部108を有す
る。カム107と装置本体側にはピン109,110を
設けてあり、ピン109,110には引張バネ111を
掛けてある。A cam 107 is formed integrally with the driven gear 102. The cam 107 has a locking portion 108. Pins 109 and 110 are provided on the cam 107 and the apparatus main body side, and tension springs 111 are hooked on the pins 109 and 110.
【0005】一方、装置本体側にはソレノイド112と
可動片113とを有する。On the other hand, the apparatus main body side has a solenoid 112 and a movable piece 113.
【0006】上記構成において、駆動歯車100は常時
時計方向に回転している。また、従動歯車102は引張
バネ111の弾性力により反時計方向に回転するような
モーメントを与えられているが、ソレノイド112がO
FF状態で可動片113の爪114が係止部108へ係
止しているため、従動歯車102は図8の位置で停止し
ている。In the above structure, the drive gear 100 always rotates clockwise. Further, the driven gear 102 is given a moment to rotate in the counterclockwise direction by the elastic force of the tension spring 111, but the solenoid 112 moves to the O position.
Since the claw 114 of the movable piece 113 is locked to the locking portion 108 in the FF state, the driven gear 102 is stopped at the position shown in FIG.
【0007】つまり、欠歯部106と駆動歯車100と
が対応して駆動歯車100と従動歯車102とは非噛み
合い状態にあり、駆動歯車100の回転は従動歯車10
2に伝達されない。That is, the toothless portion 106 and the drive gear 100 correspond to each other and the drive gear 100 and the driven gear 102 are out of mesh with each other, and the rotation of the drive gear 100 is driven by the driven gear 10.
2 is not transmitted.
【0008】一方、ソレノイド112に電圧が印加され
て励磁されると可動片113が二点鎖線の位置へ移動
し、爪114が係止部108から外れる。On the other hand, when a voltage is applied to the solenoid 112 and it is excited, the movable piece 113 moves to the position indicated by the chain double-dashed line, and the claw 114 is disengaged from the locking portion 108.
【0009】すると、従動歯車102は引張バネ111
の弾性力によって反時計方向に予備回転し、図9のよう
に歯105が歯104と噛み合い状態となり、駆動歯車
100の回転が伝達されて従動歯車102が回転する。Then, the driven gear 102 has a tension spring 111.
The elastic force causes the pre-rotation in the counterclockwise direction, the teeth 105 mesh with the teeth 104 as shown in FIG. 9, and the rotation of the drive gear 100 is transmitted to rotate the driven gear 102.
【0010】[0010]
【発明が解決しようとする課題】しかし、上記従来例で
は従動歯車102の予備回転のタイミングによっては、
駆動歯車100の歯104と、従動歯車102の欠歯部
106の下流側第一歯105aとの移動が同期すること
がある。その結果、歯104の頂面115と歯105の
頂面116が接触して歯たけ方向に押し合い、その抵抗
によって歯104,105aが破損したり駆動歯車10
0が停止したりして動力伝達機能が損なわれるという問
題があった。However, in the above-mentioned conventional example, depending on the timing of the preliminary rotation of the driven gear 102,
The movement of the teeth 104 of the drive gear 100 and the downstream first teeth 105a of the toothless portion 106 of the driven gear 102 may be synchronized. As a result, the top surface 115 of the tooth 104 and the top surface 116 of the tooth 105 come into contact with each other and push in the direction of the tooth depth, and the resistance causes damage to the teeth 104 and 105a or the drive gear 10.
There was a problem that the power transmission function was impaired because 0 stopped.
【0011】本発明は上記課題を解決するためのもの
で、第一歯車の歯と第二歯車の欠歯部の回転方向下流側
の第一歯とが接触した際の歯たけ方向の押し合い力を低
減した動力伝達装置を提供することを目的としている。The present invention is to solve the above-mentioned problems, and a pressing force in the tooth depth direction when the teeth of the first gear and the first teeth on the downstream side in the rotational direction of the toothless portion of the second gear come into contact with each other. It is an object of the present invention to provide a power transmission device with reduced power consumption.
【0012】[0012]
【課題を解決するための手段】上記目的を達成するため
本発明の第一手段は、複数の歯を有する第一歯車の近傍
に、第一歯車の歯と噛み合う複数の歯と、歯の無い欠歯
部とを有する第二歯車を設けた動力伝達装置において、
前記第二歯車の欠歯部の回転方向下流側に位置する第一
歯,第二歯部分を歯たけ方向に弾性変形自在な構成と
し、第一歯の上流側の側面の歯元側から下流側の側面の
歯先側に向けて切り欠いた第一傾斜面を形成し、第二歯
の上流側の側面の歯先側から下流側の側面の歯元側に向
けて切り欠いた第二傾斜面を形成した。To achieve the above object, the first means of the present invention is to provide a plurality of teeth which mesh with the teeth of the first gear in the vicinity of the first gear having a plurality of teeth and no teeth. In a power transmission device provided with a second gear having a toothless portion,
The first tooth and the second tooth portion located on the downstream side in the rotation direction of the toothless portion of the second gear are configured to be elastically deformable in the tooth depth direction, and the first tooth and the second tooth portion are downstream from the root side of the upstream side surface. The first inclined surface that is cut out toward the tip side of the side surface of the second side, and is cut out from the tip side of the upstream side surface of the second tooth toward the root side of the downstream side surface. An inclined surface was formed.
【0013】また、第二手段は複数の歯を有する第一歯
車の近傍に、第一歯車の歯と噛み合う複数の歯と、歯の
無い欠歯部とを有する第二歯車を設けた動力伝達装置に
おいて、前記第二歯車は欠歯部の回転方向下流側に位置
する第一歯〜第三歯部分まで歯たけ方向に弾性変形自在
な構成であり、第一歯〜第n歯までは上流側の側面の歯
元側から下流側の側面の歯先側に向けて切り欠いた第一
傾斜面を有し、n+一歯には上流側の側面の歯先側から
下流側の側面の歯元側に向けて切り欠いた第二傾斜面を
有する。Further, the second means is a power transmission in which a second gear having a plurality of teeth meshing with the teeth of the first gear and a toothless toothless portion is provided in the vicinity of the first gear having a plurality of teeth. In the device, the second gear is configured to be elastically deformable in the tooth cap direction from the first tooth to the third tooth located on the downstream side in the rotational direction of the toothless portion, and is upstream from the first tooth to the n-th tooth. Has a first inclined surface that is cut away from the root side of the side surface toward the tip side of the downstream side surface, and n + one tooth has teeth from the tip side of the upstream side surface to the tooth side of the downstream side. It has a second inclined surface cut out toward the original side.
【0014】また、前記第一,第二手段の第二歯車の材
質はプラスチックである。The material of the second gear of the first and second means is plastic.
【0015】更に、前記第一手段の第一歯と第二歯との
端面形状を非対称とした。Further, the end surfaces of the first and second teeth of the first means are asymmetric.
【0016】更にまた、前記第二手段の第n歯とn+一
歯との端面形状を非対称とした。Furthermore, the end face shapes of the nth tooth and the (n + 1) th tooth of the second means are asymmetric.
【0017】[0017]
【作用】そして、歯の移動が同期した場合、第一歯車の
歯が第二歯車の第一傾斜面に接触し、第二歯車は回転が
若干遅れて歯同士の押し合いが防止される。第一歯車の
歯の頂部と第二歯車の歯の頂部とが接触した場合、第二
歯車の歯が歯たけ方向に弾性変形して押し合い抵抗を低
減する。When the movement of the teeth is synchronized, the teeth of the first gear come into contact with the first inclined surface of the second gear, the rotation of the second gear is slightly delayed, and the pushing of the teeth is prevented. When the tops of the teeth of the first gear and the tops of the teeth of the second gear come into contact with each other, the teeth of the second gear are elastically deformed in the tooth depth direction to reduce the pressing resistance.
【0018】また、接触した歯同士は接触抵抗により同
時に移動し、回転に伴って第一歯車の歯と第二歯車の第
二歯の第二傾斜面とが接触する。第一,第二歯部分が復
元しようとするが、第二傾斜面の存在により第二歯車が
若干速く上流へ回転する。Further, the contacted teeth move simultaneously due to contact resistance, and the teeth of the first gear and the second inclined surface of the second tooth of the second gear come into contact with each other as the teeth rotate. Although the first and second tooth portions try to restore, the second gear rotates a little faster upstream due to the presence of the second inclined surface.
【0019】[0019]
【実施例】次に、本発明を図面により説明する。図1は
複写機,プリンタ,ファクシミリ,電子ファイル等の給
紙機構を示す断面図である。図示しない機器本体に装着
した給紙カセット1内には転写紙2を積載してある。給
紙カセット1は分離爪3を有する。機器本体側であって
給紙カセット1の上方には軸5に取り付けた半月状の給
紙ローラ4があり、給紙ローラ4が矢印A方向に間欠回
転し、分離爪3で一枚づつに分離して矢印B方向へ給紙
する。 (第一実施例)図2は給紙ローラ4の回転に用いられる
動力伝達装置の第一実施例を示している。6は機器本体
側に設けた第一歯車としての駆動歯車であり、軸7に固
定されている。駆動歯車6は全周に亘って複数の歯8を
有し、図示しないモータ等によって常時矢印D方向に回
転する。The present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a paper feeding mechanism for a copying machine, a printer, a facsimile, an electronic file, and the like. Transfer papers 2 are stacked in a paper feed cassette 1 mounted on a device body (not shown). The paper feed cassette 1 has a separation claw 3. On the device body side and above the paper feed cassette 1, there is a half-moon-shaped paper feed roller 4 attached to a shaft 5. The paper feed roller 4 intermittently rotates in the direction of arrow A, and the separation claws 3 separate the sheets one by one. Separate and feed in the direction of arrow B. (First Embodiment) FIG. 2 shows a first embodiment of a power transmission device used for rotating the paper feed roller 4. Reference numeral 6 denotes a drive gear serving as a first gear provided on the device body side and fixed to the shaft 7. The drive gear 6 has a plurality of teeth 8 over the entire circumference and is constantly rotated in the direction of arrow D by a motor or the like not shown.
【0020】また、駆動歯車6の下方には軸5に取り付
けた第二歯車としての従動歯車9を設けてある。従動歯
車9の材質は、ナイロン,ポリアセタール等に代表され
るエンジニアリングプラスチックで成形してあり、金属
製の歯車に比べて剛性が低い。図示実施例では駆動歯車
6のピッチ円直径よりも従動歯車9のピッチ円直径のほ
うが大きく設定してある。Below the drive gear 6, a driven gear 9 as a second gear attached to the shaft 5 is provided. The driven gear 9 is made of engineering plastic typified by nylon, polyacetal or the like, and has a lower rigidity than a metal gear. In the illustrated embodiment, the pitch circle diameter of the driven gear 9 is set larger than the pitch circle diameter of the drive gear 6.
【0021】従動歯車9は複数の歯10と歯の無い欠歯
部11とを有する。そして、従動歯車9の欠歯部11の
回転方向Eの下流側には弧状のスリット14を設けてあ
り、たわみ部12を構成している。たわみ部12は固定
端13側を支点として径方向に弾性変形自在である。The driven gear 9 has a plurality of teeth 10 and a toothless portion 11 having no teeth. Further, an arc-shaped slit 14 is provided on the downstream side of the toothless portion 11 of the driven gear 9 in the rotation direction E, and constitutes a flexible portion 12. The flexible portion 12 is elastically deformable in the radial direction with the fixed end 13 side serving as a fulcrum.
【0022】そして、欠歯部11寄りの第一歯10aの
上流側の側面の歯元側から下流側の側面の歯先側に向け
て切り欠いた第一傾斜面16を形成し、第二歯10bの
上流側の側面の歯先側から下流側の側面の歯元側に向け
て切り欠いた第二傾斜面18を形成した。Then, the first inclined surface 16 is formed by cutting out from the root side of the upstream side surface of the first tooth 10a near the toothless portion 11 toward the tip side of the downstream side surface, The second inclined surface 18 is formed by cutting out from the tip side of the upstream side surface of the tooth 10b toward the root side of the downstream side surface.
【0023】一方、従動歯車9の側面にはカム19を一
体的に設けてある。カム19の側面にはピン20を設け
てあり、機器本体側にもピン21を設けてある。そし
て、ピン20,21には引張バネ22を掛けてある。ま
たカム19の外周には係止部23を設けてある。On the other hand, a cam 19 is integrally provided on the side surface of the driven gear 9. A pin 20 is provided on the side surface of the cam 19, and a pin 21 is also provided on the device body side. A tension spring 22 is attached to the pins 20 and 21. A locking portion 23 is provided on the outer circumference of the cam 19.
【0024】更にまた従動歯車9の下方にはホルダー2
4により保持したソレノイド25を設けてある。ホルダ
ー24には、シーソー状に作動する可動片26を取り付
けてあり、可動片26の一端側には爪27を形成してあ
る。Further, below the driven gear 9, the holder 2 is provided.
There is provided a solenoid 25 held by 4. A movable piece 26 that operates like a seesaw is attached to the holder 24, and a claw 27 is formed on one end side of the movable piece 26.
【0025】ホルダー24の外面にはピン28を設けて
あり、可動片26の他端側30とピン28とには引張バ
ネ29を掛けてある。A pin 28 is provided on the outer surface of the holder 24, and a tension spring 29 is hooked on the other end 30 of the movable piece 26 and the pin 28.
【0026】上記構成において、駆動歯車6は常時矢印
D方向に回転している。また、従動歯車9は引張バネ2
2の弾性力により矢印E方向に回転するようなモーメン
トを与えられている。一方、ソレノイド25がOFF状
態であるため、引張バネ29で引かれる可動片26の爪
27が実線のように係止部23へ係止している。従っ
て、上記モーメントの存在に関らず、従動歯車9は図2
の位置で停止している。In the above structure, the drive gear 6 is constantly rotating in the direction of arrow D. Further, the driven gear 9 is the tension spring 2
The elastic force of 2 gives a moment to rotate in the direction of arrow E. On the other hand, since the solenoid 25 is in the OFF state, the claw 27 of the movable piece 26 that is pulled by the tension spring 29 is locked to the locking portion 23 as shown by the solid line. Therefore, regardless of the existence of the above moment, the driven gear 9 is
Has stopped at the position.
【0027】その結果、欠歯部11と駆動歯車6とが対
応して駆動歯車6と従動歯車9とは非噛み合い状態にあ
り、駆動歯車6の回転は従動歯車9に伝達されない。As a result, the toothless portion 11 and the drive gear 6 correspond to each other and the drive gear 6 and the driven gear 9 are out of mesh with each other, and the rotation of the drive gear 6 is not transmitted to the driven gear 9.
【0028】一方、ソレノイド25に電圧が印加されて
励磁されると、発生した吸引力で可動片26が二点鎖線
の位置へ移動し、爪27が係止部23から外れる。On the other hand, when a voltage is applied to the solenoid 25 to excite it, the movable piece 26 is moved to the position indicated by the chain double-dashed line by the generated attractive force, and the pawl 27 is disengaged from the locking portion 23.
【0029】すると、従動歯車9は引張バネ22の弾性
力によって矢印E方向に予備回転し、第一歯10aが歯
8と噛み合い状態となり以後は噛み合い力で駆動歯車6
の回転が伝達されて従動歯車9が回転する。この時ソレ
ノイド25はOFFされる。Then, the driven gear 9 is preliminarily rotated in the direction of arrow E by the elastic force of the tension spring 22, the first tooth 10a is brought into mesh with the tooth 8, and thereafter the driving gear 6 is meshed with the gear.
Is transmitted to rotate the driven gear 9. At this time, the solenoid 25 is turned off.
【0030】そして、歯10の最下流部が歯8から抜け
ると、図2の状態となって従動歯車9への動力伝達はな
されなくなる。When the most downstream portion of the tooth 10 comes out of the tooth 8, the state shown in FIG. 2 is established and the power transmission to the driven gear 9 is stopped.
【0031】そして、歯10,8の移動が同期した場
合、駆動歯車の歯10が従動歯車9の第一傾斜面16に
接触して従動歯車9の回転が若干遅れるため、歯10
a,8同士の押し合いが防止される。仮に押し合ったと
しても、従動歯車9のたわみ部12歯たけ方向に弾性変
形して押し合い抵抗を低減する。When the movements of the teeth 10 and 8 are synchronized, the teeth 10 of the drive gear come into contact with the first inclined surface 16 of the driven gear 9 and the rotation of the driven gear 9 is slightly delayed.
Pushing between a and 8 is prevented. Even if they are pressed against each other, the bending portion 12 of the driven gear 9 is elastically deformed in the direction of the tooth engagement to reduce the pressing resistance.
【0032】続いて接触した歯10a,8は接触抵抗で
移動し、回転に伴って駆動歯車6の歯8と従動歯車9の
第二歯10bの第二傾斜面17とが接触する。すると、
たわみ部12が外周側へ復元へしようとするが、第二傾
斜面17と歯8とが接触しているため、復元力の反力で
従動歯車9が駆動歯車6の回転よりも若干速く上流へ矯
正回転する。その結果、第一歯10a,第一歯10bは
歯8同士の間に正確に進入する。Subsequently, the teeth 10a, 8 contacting each other move due to contact resistance, and the tooth 8 of the drive gear 6 and the second inclined surface 17 of the second tooth 10b of the driven gear 9 come into contact with the rotation. Then,
Although the flexible portion 12 tries to restore to the outer peripheral side, since the second inclined surface 17 and the tooth 8 are in contact with each other, the driven gear 9 is slightly faster than the rotation of the drive gear 6 upstream due to the reaction force of the restoring force. Rotate straightening to. As a result, the first teeth 10a and the first teeth 10b accurately enter between the teeth 8.
【0033】従って、歯10,8の破損や駆動歯車6の
停止が発生することはなく、安定した動力伝達機能を確
保できる。 (第二実施例)図5においては、第一歯10a,第二歯
10bに第一傾斜面16を形成してあり、第三歯10c
に第二傾斜面17を形成してある。その他の構成は第一
実施例と同様である。Therefore, the teeth 10, 8 are not damaged and the drive gear 6 is not stopped, and a stable power transmission function can be secured. (Second Embodiment) In FIG. 5, a first inclined surface 16 is formed on the first tooth 10a and the second tooth 10b, and the third tooth 10c is formed.
The second inclined surface 17 is formed on the. Other configurations are similar to those of the first embodiment.
【0034】本実施例では第一歯10a,第二歯10b
が歯8を乗り上げても第三歯10cの第二傾斜面17に
よって前述と同様の作用が発生し、第一実施例と同様の
効果を得られる。In this embodiment, the first tooth 10a and the second tooth 10b are used.
Even when the tooth 8 rides on the tooth 8, the same action as described above occurs due to the second inclined surface 17 of the third tooth 10c, and the same effect as that of the first embodiment can be obtained.
【0035】なお、第三歯,第四歯まで第一傾斜面を形
成し、それ以降の歯に第二傾斜面を形成してもよい。 (第三実施例)傾斜面の形状については、上流側を切欠
いた第一歯10aと、下流側を切欠いた第二歯10bと
が対称形状であった時は、最悪の場合図6(A)に示す
様に第二歯10bと歯8とのエッジ同士が衝突した状態
となり、実施例1の矯正回転作用が機能しないというこ
とも考えられる。そこで、図6(B)に示す様に第一歯
10aと第二歯10bとは非対称形状(傾斜角度相違)
としておけば、第一歯10aと歯10のエッジ同士が当
接しても、第二歯10bの傾斜面17と歯8のエッジが
当接するため、矯正回転作用が機能することが可能とな
る。 (第四実施例)図7は第四実施例は欠歯部11,スリッ
ト14,たわみ部12を180度反対の方向に二箇所形
成してある。また、カム19も係止部23を二箇所有す
る。更に軸5には、二つの突起41を有する紡錘形の付
勢カム40を取り付けてある。そして42は板バネであ
り、付勢カム40の外周面に接触している。その他の構
成は第一実施例と同様である。The first inclined surface may be formed up to the third tooth and the fourth tooth, and the second inclined surface may be formed on the teeth thereafter. (Third Embodiment) Regarding the shape of the inclined surface, in the worst case, when the first tooth 10a having a notch on the upstream side and the second tooth 10b having a notch on the downstream side have symmetrical shapes, FIG. It is also conceivable that the edges of the second teeth 10b and the teeth 8 collide with each other as shown in (), and the corrective rotation action of the first embodiment does not function. Therefore, as shown in FIG. 6B, the first tooth 10a and the second tooth 10b have an asymmetrical shape (difference in inclination angle).
Therefore, even if the edges of the first tooth 10a and the tooth 10 come into contact with each other, the inclined surface 17 of the second tooth 10b and the edge of the tooth 8 come into contact with each other, so that the corrective rotation action can be performed. (Fourth Embodiment) In the fourth embodiment, a toothless portion 11, a slit 14 and a flexible portion 12 are formed at two locations in opposite directions by 180 degrees in the fourth embodiment. The cam 19 also has two locking portions 23. Further, a spindle-shaped biasing cam 40 having two protrusions 41 is attached to the shaft 5. A leaf spring 42 is in contact with the outer peripheral surface of the biasing cam 40. Other configurations are similar to those of the first embodiment.
【0036】本実施例ではソレノイド25がONとなる
と、板バネ42の弾性力により従動歯車9に予備回転が
与えられ、第一実施例と同様の作用効果がある。In the present embodiment, when the solenoid 25 is turned on, the elastic force of the leaf spring 42 preliminarily rotates the driven gear 9, which has the same effect as the first embodiment.
【0037】また、係止部23が二箇所あるため、従動
歯車9は略180度の回転毎に停止し、該回転毎に動力
の伝達が解除される。Further, since there are two locking portions 23, the driven gear 9 stops at every rotation of about 180 degrees, and the transmission of power is released at each rotation.
【0038】なお、特に図示しないが、欠歯部,たわみ
部,係止部を三箇所,四箇所と設けることで、1/3回
転,1/4回転毎の間欠制御が可能となる。Although not shown in the drawing, intermittent control can be performed every 1/3 rotation and 1/4 rotation by providing the toothless portion, the bending portion, and the locking portion at three locations and four locations.
【0039】なお、上記実施例の第一歯車を従動歯車と
し、第二歯車を駆動歯車としてもよい。The first gear of the above embodiment may be a driven gear and the second gear may be a drive gear.
【0040】[0040]
【発明の効果】以上説明したように、第一歯車の歯と第
二歯車の歯とが同期移動したとしても、歯同士の押し合
い抵抗を軽減できるとともに、適正な噛み合い状態に矯
正することができる。従って、歯の破損や第一歯車の停
止がなく、動力伝達機能を安定維持できる。As described above, even if the teeth of the first gear and the teeth of the second gear move in synchronism, it is possible to reduce the pressing resistance between the teeth and to correct them in an appropriate meshed state. . Therefore, the power transmission function can be stably maintained without damaging the teeth or stopping the first gear.
【図1】本発明を適用する複写機の給紙機構の断面図。FIG. 1 is a sectional view of a sheet feeding mechanism of a copying machine to which the present invention is applied.
【図2】図1に用いた動力伝達装置の第一実施例の構成
を示す図。FIG. 2 is a diagram showing the configuration of a first embodiment of the power transmission device used in FIG.
【図3】(A),(B)は図2の動作を示す部分図。3A and 3B are partial views showing the operation of FIG.
【図4】(A),(B)は図2の動作を示す部分図。4A and 4B are partial views showing the operation of FIG.
【図5】本発明の動力伝達装置の第二実施例の構成を示
す図。FIG. 5 is a diagram showing the configuration of a second embodiment of the power transmission system of the invention.
【図6】(A)は第一歯と第二歯とが対称形状の場合の
第一実施例の図、(B)は非対称形状の第三実施例の
図。FIG. 6A is a diagram of a first embodiment when the first and second teeth are symmetrical, and FIG. 6B is a diagram of a third embodiment having an asymmetrical shape.
【図7】本発明の動力伝達装置の第四実施例の構成を示
す図。FIG. 7 is a diagram showing the configuration of a fourth embodiment of the power transmission device of the present invention.
【図8】従来例の構成であり、従動歯車の停止状態の
図。FIG. 8 is a diagram showing a configuration of a conventional example, in which a driven gear is stopped.
【図9】従来例の構成であり、従動歯車が回転した状態
の図。FIG. 9 is a diagram showing a configuration of a conventional example, in which a driven gear is rotated.
6 駆動歯車(第一歯車) 8,10 歯 11 欠歯部 10a 第一歯 10b 第二歯 9 従動歯車(第二歯車) 16 第一傾斜面 17 第二傾斜面 6 Drive Gear (First Gear) 8, 10 Teeth 11 Partial Tooth Part 10a First Teeth 10b Second Teeth 9 Driven Gear (Second Gear) 16 First Sloping Surface 17 Second Sloping Surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 安 藤 正 雄 東京都大田区下丸子3丁目30番2号 キヤ ノン株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masao Ando 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.
Claims (5)
一歯車の歯と噛み合う複数の歯と、歯の無い欠歯部とを
有する第二歯車を設けた動力伝達装置において、 前記第二歯車の欠歯部の回転方向下流側に位置する第一
歯,第二歯部分を歯たけ方向に弾性変形自在な構成と
し、第一歯の上流側の側面の歯元側から下流側の側面の
歯先側に向けて切り欠いた第一傾斜面を形成し、第二歯
の上流側の側面の歯先側から下流側の側面の歯元側に向
けて切り欠いた第二傾斜面を形成したことを特徴とする
動力伝達装置。1. A power transmission device, comprising: a second gear having a plurality of teeth meshing with the teeth of the first gear and a toothless portion having no teeth in the vicinity of the first gear having a plurality of teeth. The first tooth and the second tooth portion located on the downstream side in the rotation direction of the toothless portion of the second gear are configured to be elastically deformable in the tooth brushing direction, and from the root side to the downstream side of the upstream side surface of the first tooth. Forming a first inclined surface notched toward the tooth tip side of the side surface of the second tooth, and notched from the tooth tip side of the upstream side surface of the second tooth toward the tooth root side of the downstream side surface A power transmission device having a surface.
一歯車の歯と噛み合う複数の歯と、歯の無い欠歯部とを
有する第二歯車を設けた動力伝達装置において、 前記第二歯車は欠歯部の回転方向下流側に位置する第一
歯〜第三歯部分まで歯たけ方向に弾性変形自在な構成で
あり、第一歯〜第n歯までは上流側の側面の歯元側から
下流側の側面の歯先側に向けて切り欠いた第一傾斜面を
有し、n+一歯には上流側の側面の歯先側から下流側の
側面の歯元側に向けて切り欠いた第二傾斜面を有するこ
とを特徴とする動力伝達装置。2. A power transmission device comprising a second gear having a plurality of teeth that mesh with the teeth of the first gear and a toothless portion having no teeth, in the vicinity of the first gear having a plurality of teeth. The second gear has a configuration in which the first tooth to the third tooth located on the downstream side in the rotation direction of the toothless portion are elastically deformable in the tooth-take direction, and the first tooth to the n-th tooth are on the upstream side surface. It has a first inclined surface that is cut out from the root side toward the tip side of the downstream side surface, and n + one tooth faces from the tip side of the upstream side surface to the root side of the downstream side surface. A power transmission device having a second inclined surface cut out.
る請求項1または2記載の動力伝達装置。3. The power transmission device according to claim 1, wherein the material of the second gear is plastic.
称とした請求項1記載の動力伝達装置。4. The power transmission device according to claim 1, wherein the end surfaces of the first teeth and the second teeth are asymmetric.
対称とした請求項2記載の動力伝達装置。5. The power transmission device according to claim 2, wherein the end surfaces of the nth tooth and the (n + 1) th tooth are asymmetric.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4224800A JPH0650406A (en) | 1992-07-31 | 1992-07-31 | Power transmission device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4224800A JPH0650406A (en) | 1992-07-31 | 1992-07-31 | Power transmission device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0650406A true JPH0650406A (en) | 1994-02-22 |
Family
ID=16819405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4224800A Pending JPH0650406A (en) | 1992-07-31 | 1992-07-31 | Power transmission device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0650406A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08113375A (en) * | 1994-10-17 | 1996-05-07 | Canon Inc | Drive transmission device, sheet feed device, and image forming device |
EP0856777A1 (en) * | 1997-01-30 | 1998-08-05 | Canon Kabushiki Kaisha | Drive transmitting device, sheet feeding device and image forming apparatus |
WO2004005033A1 (en) * | 2002-07-08 | 2004-01-15 | Seiko Epson Corporation | Rotor, drive conversion device, cleaning device, wiping device, and liquid injection device |
JP2008164151A (en) * | 2007-01-05 | 2008-07-17 | Fuji Xerox Co Ltd | Intermittently driving device, sheet feeding device, and image formation device |
JP2010202288A (en) * | 2009-02-27 | 2010-09-16 | Ricoh Co Ltd | Clutch device, sheet conveying device, and image forming device |
JP2011006210A (en) * | 2009-06-26 | 2011-01-13 | Kyocera Mita Corp | Sheet feeder and image forming apparatus incorporating the same |
JP2016038042A (en) * | 2014-08-08 | 2016-03-22 | キヤノン株式会社 | Driving control device and image formation device |
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JP2016172612A (en) * | 2015-03-17 | 2016-09-29 | ブラザー工業株式会社 | Image formation apparatus |
US20170131662A1 (en) * | 2015-11-09 | 2017-05-11 | Canon Kabushiki Kaisha | Driving force transmission apparatus and image forming apparatus |
JP2019077560A (en) * | 2017-10-20 | 2019-05-23 | キヤノン株式会社 | Drive transmission device, sheet feeding device, and image formation device |
JP2020013144A (en) * | 2019-09-02 | 2020-01-23 | キヤノン株式会社 | Drive transmission device and image forming apparatus including the same |
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-
1992
- 1992-07-31 JP JP4224800A patent/JPH0650406A/en active Pending
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JPH08113375A (en) * | 1994-10-17 | 1996-05-07 | Canon Inc | Drive transmission device, sheet feed device, and image forming device |
EP0856777A1 (en) * | 1997-01-30 | 1998-08-05 | Canon Kabushiki Kaisha | Drive transmitting device, sheet feeding device and image forming apparatus |
US5944305A (en) * | 1997-01-30 | 1999-08-31 | Canon Kabushiki Kaisha | Drive transmitting device, sheet feeding device and image forming apparatus |
WO2004005033A1 (en) * | 2002-07-08 | 2004-01-15 | Seiko Epson Corporation | Rotor, drive conversion device, cleaning device, wiping device, and liquid injection device |
US7182426B2 (en) | 2002-07-08 | 2007-02-27 | Seiko Epson Corporation | Rotor, drive conversion device, cleaning device, wiping device, and liquid injection device |
CN100333913C (en) * | 2002-07-08 | 2007-08-29 | 精工爱普生株式会社 | Rotor, drive conversion device, cleaning device, wiping device, and liquid injection device |
US7722155B2 (en) | 2002-07-08 | 2010-05-25 | Seiko Epson Corporation | Rotor, drive converting apparatus, cleaning apparatus, wiping apparatus, and liquid ejection apparatus |
JP2008164151A (en) * | 2007-01-05 | 2008-07-17 | Fuji Xerox Co Ltd | Intermittently driving device, sheet feeding device, and image formation device |
JP2010202288A (en) * | 2009-02-27 | 2010-09-16 | Ricoh Co Ltd | Clutch device, sheet conveying device, and image forming device |
JP2011006210A (en) * | 2009-06-26 | 2011-01-13 | Kyocera Mita Corp | Sheet feeder and image forming apparatus incorporating the same |
JP2016038042A (en) * | 2014-08-08 | 2016-03-22 | キヤノン株式会社 | Driving control device and image formation device |
WO2016110994A1 (en) * | 2015-01-09 | 2016-07-14 | キヤノン株式会社 | Drive transmission device and image formation device equipped with same |
JPWO2016110994A1 (en) * | 2015-01-09 | 2017-10-19 | キヤノン株式会社 | Drive transmission device and image forming apparatus including the same |
US9891580B2 (en) | 2015-01-09 | 2018-02-13 | Canon Kabushiki Kaisha | Drive transmission device and image forming apparatus including the same |
US10310444B2 (en) | 2015-01-09 | 2019-06-04 | Canon Kabushiki Kaisha | Drive transmission device and image forming apparatus including the same |
JP2016172612A (en) * | 2015-03-17 | 2016-09-29 | ブラザー工業株式会社 | Image formation apparatus |
US20170131662A1 (en) * | 2015-11-09 | 2017-05-11 | Canon Kabushiki Kaisha | Driving force transmission apparatus and image forming apparatus |
US10054878B2 (en) * | 2015-11-09 | 2018-08-21 | Canon Kabushiki Kaisha | Driving force transmission apparatus and image forming apparatus |
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US11635722B2 (en) | 2017-10-20 | 2023-04-25 | Canon Kabushiki Kaisha | Driving force transmitting device, sheet feeding apparatus and image forming apparatus |
JP2020013144A (en) * | 2019-09-02 | 2020-01-23 | キヤノン株式会社 | Drive transmission device and image forming apparatus including the same |
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