JPH0632777Y2 - Bearing structure of geared motor - Google Patents
Bearing structure of geared motorInfo
- Publication number
- JPH0632777Y2 JPH0632777Y2 JP15003589U JP15003589U JPH0632777Y2 JP H0632777 Y2 JPH0632777 Y2 JP H0632777Y2 JP 15003589 U JP15003589 U JP 15003589U JP 15003589 U JP15003589 U JP 15003589U JP H0632777 Y2 JPH0632777 Y2 JP H0632777Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- rotary shaft
- output rotary
- plate
- shaft
- 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.)
- Expired - Lifetime
Links
Landscapes
- Sliding-Contact Bearings (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ 本考案はギヤードモータの軸受構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a bearing structure for a geared motor.
［従来の技術］ 従来、樹脂化されたハウジングによって構成されるギヤ
ードモータの軸受構造としては、耐摩耗性、強度面等の
優れた特殊樹脂を使用するか、第３図に示すように摺動
部材を使用した軸受を別途設ける構造が一般的である。
すなわち、第３図において、１は樹脂製のハウジング、
２は一端がハウジング１の軸受孔３に筒状の軸受４を介
して回転自在に軸支された出力回転軸、５は出力回転軸
２の軸端に一体的に設けられた駆動歯車、６はハウジン
グ１と駆動歯車５との間に介装された板状軸受で、この
板状軸受６は出力回転軸２の軸端に嵌合されてハウジン
グ１の軸受凹部７内に挿入配置されている。板状軸受６
の外周面と軸受凹部７の内周面との間のクリアランスＤ
１は、出力回転軸２の外周面と板状軸受６の内周面との
間のクリアランスＤ２より大きい（Ｄ１＞Ｄ２）。な
お、板状軸受６の板厚は、例えば0.5mm程度で、軸受凹
部７の深さと略同等もしくは小さく設定されている。[Prior Art] Conventionally, as a bearing structure of a geared motor composed of a resinized housing, a special resin excellent in wear resistance and strength is used, or sliding as shown in FIG. A structure in which a bearing using a member is separately provided is generally used.
That is, in FIG. 3, 1 is a resin housing,
Reference numeral 2 denotes an output rotary shaft, one end of which is rotatably supported in a bearing hole 3 of the housing 1 through a cylindrical bearing 4, 5 is a drive gear integrally provided at the shaft end of the output rotary shaft 2, 6 Is a plate-like bearing interposed between the housing 1 and the drive gear 5, and the plate-like bearing 6 is fitted into the shaft end of the output rotary shaft 2 and inserted into the bearing recess 7 of the housing 1. There is. Plate bearing 6
Between the outer peripheral surface of the bearing and the inner peripheral surface of the bearing recess 7
1 is larger than the clearance D 2 between the outer peripheral surface of the output rotary shaft 2 and the inner peripheral surface of the plate-shaped bearing 6 (D 1 > D 2 ). The plate bearing 6 has a plate thickness of, for example, about 0.5 mm, which is set to be substantially equal to or smaller than the depth of the bearing recess 7.
［考案が解決しようとする課題］ しかしながら、前者の特殊樹脂製ハウジングを使用した
ギヤードモータにおいては、製造コストが高くつき、ま
た汎用性に欠けると云う問題があり、また後者の軸受４
を使用したものは軸受４のために部品点数が増え、コス
ト高になる上、スペース上小型化が困難であるといった
欠点があった。[Problems to be Solved by the Invention] However, in the geared motor using the former special resin housing, there are problems of high manufacturing cost and lack of versatility, and the latter bearing 4
Since the bearing 4 has a large number of parts due to the bearing 4, the cost is high, and it is difficult to reduce the size in terms of space.
したがって、本考案は上記したような従来の問題点に鑑
みてなされたもので、その目的とするところは、比較的
簡単な構成でコスト低減と小型化を可能にしたギヤード
モータの軸受構造を提供することにある。Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a bearing structure for a geared motor which has a relatively simple structure and enables cost reduction and size reduction. To do.
［課題を解決するための手段］ 本考案は上記目的を達成するために、出力回転軸と、こ
の出力回転軸の軸端部を軸支する軸受孔と軸受凹部を有
するハウジングと、前記出力回転軸の軸端に設けられた
駆動歯車と、前記出力回転軸の軸端に嵌合されることに
より前記駆動歯車と前記ハウジングとの間に介装され前
記軸受凹部内に位置する板状軸受とを備え、前記板状軸
受は前記軸受孔に静合状態で内接され、かつ前記出力回
転軸の軸端に対しては、前記出力回転軸と軸受孔軸との
軸受クリアランスと同等もしくはこれよりも大きなクリ
アランスをもって遊嵌されているものである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides an output rotary shaft, a housing having a bearing hole and a bearing recess for axially supporting a shaft end portion of the output rotary shaft, and the output rotary shaft. A drive gear provided at the shaft end of the shaft, and a plate-like bearing interposed between the drive gear and the housing by being fitted to the shaft end of the output rotation shaft and located in the bearing recess. The plate-shaped bearing is inscribed in the bearing hole in a statically fitted state, and with respect to the shaft end of the output rotary shaft, the bearing clearance is equal to or more than the bearing clearance between the output rotary shaft and the bearing hole shaft. Is also loosely fitted with a large clearance.
［作用］ 本考案において、ハウジングの軸受凹部に内接された板
状軸受と出力回転軸とのクリアランスは、出力回転軸と
軸受孔との通常の軸受クリアランスと同等若しくはこれ
より多少大きく設定される。出力回転軸の回転によって
駆動歯車が相手歯車を駆動する場合、最初ハウジングの
軸受相当面にて出力回転軸に加わる軸線と直交する方向
（水平方向）の荷重を受けるため、ハウジングの軸受相
当面が摩耗を始め、引き続き摩耗が進行し、出力回転軸
と軸受孔間の軸受クリアランスが出力回転軸と板状軸受
間の軸受クリアランスと同じになると、初めて板状軸受
が軸受として機能しだす。そして、それ以降の回転摺動
は、水平方向荷重の荷重点に近い出力回転軸と板状軸受
との間で行われるため、軸受相当面の摩耗が進行しなく
なり、ハウジングは出力回転軸の倒れ防止機構として機
能するようになる。[Operation] In the present invention, the clearance between the plate bearing inscribed in the bearing recess of the housing and the output rotary shaft is set to be equal to or slightly larger than the normal bearing clearance between the output rotary shaft and the bearing hole. . When the drive gear drives the other gear by the rotation of the output rotary shaft, the bearing equivalent surface of the housing receives a load in the direction (horizontal direction) orthogonal to the axis applied to the output rotary shaft at first. When the bearing clearance between the output rotary shaft and the bearing hole becomes the same as the bearing clearance between the output rotary shaft and the plate-shaped bearing, the plate-shaped bearing starts to function as a bearing for the first time. Then, since the subsequent rotary sliding is performed between the output rotary shaft and the plate-like bearing close to the load point of the horizontal load, the wear of the bearing equivalent surface does not progress, and the housing falls over the output rotary shaft. It comes to function as a prevention mechanism.
［実施例］ 以下、本考案を図面に示す実施例に基づいて詳細に説明
する。[Embodiment] Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.
第１図は本考案に係るギヤードモータの軸受構造の一実
施例を示す断面図である。なお、図中第３図と同一構成
部品に対しては同一符号を以て示し、その説明を省略す
る。同図において、出力回転軸２の軸端部はハウジング
１の軸受孔３に通常の軸受クリアランスＤ０（1/100mm
程度）を以て嵌合軸支されている。板状軸受６はハウジ
ング１の軸受凹部７に内接、すなわち静合状態で嵌合さ
れ、出力回転軸２との軸受クリアランスＤ（1/10mm程
度）は、前記出力回転軸２と軸受孔３との軸受クリアラ
ンスＤ０より多少大きく設定（Ｄ＞Ｄ０）されている。
但し、技術的に可能であれば、ＤをＤ０と同等（Ｄ＝Ｄ
０）にしても以下に述べる効果に何等変わりはない。し
かしながら、ＤをＤ０より小さくすることは、後述する
出力回転軸２の倒れを規制防止できないため好ましくな
い。板状軸受６の板厚は、例えば１mm程度で、軸受凹部
７の深さより大きく設定されている。FIG. 1 is a sectional view showing an embodiment of a bearing structure for a geared motor according to the present invention. The same components as those shown in FIG. 3 are designated by the same reference numerals, and the description thereof will be omitted. In the figure, the shaft end of the output rotary shaft 2 has a normal bearing clearance D 0 (1/100 mm) in the bearing hole 3 of the housing 1.
It is supported by the mating shaft. The plate bearing 6 is inscribed in the bearing recess 7 of the housing 1, that is, fitted in a statically fitted state, and the bearing clearance D (about 1/10 mm) from the output rotary shaft 2 is the output rotary shaft 2 and the bearing hole 3. Is set to be slightly larger than the bearing clearance D 0 (D> D 0 ).
However, if technically possible, D is equivalent to D 0 (D = D
Even if it is set to 0 ), the effect described below does not change. However, it is not preferable to make D smaller than D 0 because the tilt of the output rotary shaft 2 described later cannot be prevented. The plate bearing 6 has a plate thickness of, for example, about 1 mm and is set to be larger than the depth of the bearing recess 7.
なお、その他の構成は第３図に示した従来構造と同様で
ある。The other structure is the same as the conventional structure shown in FIG.
次に、このような構成からなるギヤードモータの動作を
説明する。Next, the operation of the geared motor having such a configuration will be described.
出力回転軸２の回転によって駆動歯車５が相手歯車（図
示せず）を駆動する場合、最初ハウジング１の軸受相当
面、すなわち軸受孔３の内周面3aにて出力回転軸２に加
わる軸線と直交する方向（水平方向）の荷重Ｆを受ける
ため、ハウジング１の軸受相当面3aが摩耗を始め、引き
続き摩耗が進行し、出力回転軸２と軸受孔３間の軸受ク
リアランスＤ０が出力回転軸２と板状軸受６間の軸受ク
リアランスＤと同じになると、初めて板状軸受６が軸受
として機能するようになる。そして、それ以降の回転摺
動は、水平方向荷重Ｆの荷重点に近い出力回転軸２と板
状軸受６との間で行われるため、軸受相当面3aの摩耗が
減少し、ハウジング１は出力回転軸２の倒れ防止機構と
して機能する。When the drive gear 5 drives a mating gear (not shown) by the rotation of the output rotary shaft 2, first, the bearing equivalent surface of the housing 1, that is, the inner peripheral surface 3a of the bearing hole 3 has an axial line added to the output rotary shaft 2. Since the load F in the orthogonal direction (horizontal direction) is received, the bearing-corresponding surface 3a of the housing 1 begins to wear and the wear continues to progress, and the bearing clearance D 0 between the output rotary shaft 2 and the bearing hole 3 becomes the output rotary shaft. When the bearing clearance D between 2 and the plate-like bearing 6 becomes the same, the plate-like bearing 6 only functions as a bearing. Then, since the subsequent rotary sliding is performed between the output rotary shaft 2 and the plate-like bearing 6 near the load point of the horizontal load F, the wear of the bearing-corresponding surface 3a is reduced, and the housing 1 outputs It functions as a mechanism for preventing the rotation shaft 2 from collapsing.
したがって、第３図に示した軸受４が不要で、部品点数
の削減を図ることができ、また軸受４の分だけハウジン
グ１の軸受部を小さくすることができ、さらに出力回転
軸２と板状軸受６とは金属と金属の摺動のため、摩耗が
少なく、軸受を長寿命化させることができる。Therefore, the bearing 4 shown in FIG. 3 is unnecessary, the number of parts can be reduced, the bearing portion of the housing 1 can be made smaller by the amount of the bearing 4, and the output rotary shaft 2 and the plate-shaped member can be made smaller. Since the bearing 6 slides between metals, the wear is less and the bearing can have a longer life.
この場合、第２図に示すようにハウジング１の軸受凹部
７の内周面に突起10を突設し、板状軸受６の外周に前記
突起10に嵌合し得る凹部11を設け、これらによって板状
軸受６の回転防止機構を構成すると、ハウジング１と板
状軸受６との相対摺動が皆無となり、更に軸受を長寿命
化させることができる。In this case, as shown in FIG. 2, a protrusion 10 is provided on the inner peripheral surface of the bearing recess 7 of the housing 1, and a recess 11 which can be fitted into the protrusion 10 is provided on the outer periphery of the plate-shaped bearing 6, and When the rotation preventing mechanism for the plate-shaped bearing 6 is configured, relative sliding between the housing 1 and the plate-shaped bearing 6 is eliminated, and the life of the bearing can be further extended.
［考案の効果］ 以上説明したように本考案に係るギヤードモータの軸受
構造は、板状軸受をハウジングの軸受孔に静合状態で内
接し、且つ板状軸受を出力回転軸に対しては、出力回転
軸と軸受孔軸との軸受クリアランスと同等もしくはこれ
よりも大きなクリアランスをもって遊嵌したので、板状
軸受と出力回転軸との軸受クリアランスが軸受孔と板状
軸受の軸受クリアランスより大きい場合、初期において
は出力回転軸に加わる水平荷重のために軸受孔が摩耗す
るが、上記両クリアランスが略一致すると、それ以上は
摩耗せず、板状軸受が出力回転軸の軸受として機能する
ようになる。したがって、安価な汎用樹脂材料でハウジ
ングを製作でき、また軸受孔と出力回転軸との間に介装
される軸受を必要とせず、さらに出力回転軸と板状軸受
とは金属と金属の摺動であるため、摩耗が少なく、軸受
の長期信頼性を向上させるなど、その実用的効果は大で
ある。[Effects of the Invention] As described above, in the bearing structure of the geared motor according to the present invention, the plate-shaped bearing is inscribed in the bearing hole of the housing in a statically in contact state, and the plate-shaped bearing is provided with respect to the output rotary shaft. When the bearing clearance between the plate-shaped bearing and the output rotary shaft is larger than the bearing clearance between the bearing hole and the plate-shaped bearing, the clearance is equal to or larger than the bearing clearance between the output rotary shaft and the bearing hole shaft. In the initial stage, the bearing hole wears due to the horizontal load applied to the output rotary shaft, but if the above clearances are substantially the same, it will not wear further and the plate bearing will function as a bearing for the output rotary shaft. . Therefore, the housing can be manufactured with an inexpensive general-purpose resin material, a bearing interposed between the bearing hole and the output rotary shaft is not required, and the output rotary shaft and the plate-shaped bearing are slidable from metal to metal. Therefore, there is little wear and the long-term reliability of the bearing is improved, and its practical effects are great.
第１図は本考案に係るギヤードモータの軸受構造の一実
施例を示す断面図、第２図は本考案の他の実施例を示す
平面図、第３図はギヤードモータの軸受構造の従来例を
示す断面図である。 １……ハウジング、２……出力回転軸、３……軸受孔、
４……軸受、５……駆動歯車、６……板状軸受、７……
軸受凹部、10……突起、11……凹部、Ｄ、Ｄ０……軸受
クリアランス。FIG. 1 is a sectional view showing an embodiment of a bearing structure for a geared motor according to the present invention, FIG. 2 is a plan view showing another embodiment of the present invention, and FIG. 3 is a conventional example of a bearing structure for a geared motor. FIG. 1 ... Housing, 2 ... Output rotary shaft, 3 ... Bearing hole,
4 ... Bearing, 5 ... Drive gear, 6 ... Plate bearing, 7 ...
Bearing recess, 10 ... protrusion, 11 ... recess, D, D 0 ... bearing clearance.
Claims (1)
軸支する軸受孔と軸受凹部を有するハウジングと、前記
出力回転軸の軸端に設けられた駆動歯車と、前記出力回
転軸の軸端に嵌合されることにより前記駆動歯車と前記
ハウジングとの間に介装され前記軸受凹部内に位置する
板状軸受とを備え、 前記板状軸受は前記軸受孔に静合状態で内接され、かつ
前記出力回転軸の軸端に対しては、前記出力回転軸と軸
受孔軸との軸受クリアランスと同等もしくはこれよりも
大きなクリアランスをもって遊嵌されていることを特徴
とするギヤードモータの軸受構造。1. An output rotary shaft, a housing having a bearing hole and a bearing recess for axially supporting the shaft end portion of the output rotary shaft, a drive gear provided at the shaft end of the output rotary shaft, and the output rotary shaft. A plate-shaped bearing which is interposed between the drive gear and the housing by being fitted to the shaft end of the shaft and is located in the bearing recess; and the plate-shaped bearing is in a statically fitted state in the bearing hole. Is inscribed and is loosely fitted to the shaft end of the output rotary shaft with a clearance equal to or larger than the bearing clearance between the output rotary shaft and the bearing hole shaft. Motor bearing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15003589U JPH0632777Y2 (en) | 1989-12-28 | 1989-12-28 | Bearing structure of geared motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15003589U JPH0632777Y2 (en) | 1989-12-28 | 1989-12-28 | Bearing structure of geared motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0391051U JPH0391051U (en) | 1991-09-17 |
| JPH0632777Y2 true JPH0632777Y2 (en) | 1994-08-24 |
Family
ID=31696404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15003589U Expired - Lifetime JPH0632777Y2 (en) | 1989-12-28 | 1989-12-28 | Bearing structure of geared motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0632777Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200445145Y1 (en) * | 2009-04-28 | 2009-07-02 | 이경호 | Shift locking device for transmission gear shift lever |
-
1989
- 1989-12-28 JP JP15003589U patent/JPH0632777Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0391051U (en) | 1991-09-17 |
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