JPH0750599Y2 - Gear reducer - Google Patents
Gear reducerInfo
- Publication number
- JPH0750599Y2 JPH0750599Y2 JP1989062482U JP6248289U JPH0750599Y2 JP H0750599 Y2 JPH0750599 Y2 JP H0750599Y2 JP 1989062482 U JP1989062482 U JP 1989062482U JP 6248289 U JP6248289 U JP 6248289U JP H0750599 Y2 JPH0750599 Y2 JP H0750599Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- bearing
- shaft
- bearing plate
- diameter portion
- 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 - Fee Related
Links
Landscapes
- Gear Transmission (AREA)
- Sliding-Contact Bearings (AREA)
- General Details Of Gearings (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は入力軸の回転を複数個の歯車を介し減速して出
力軸に伝達する歯車減速機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a gear reducer that reduces the rotation of an input shaft via a plurality of gears and transmits it to an output shaft.
この種の歯車減速機は、歯車と一体かまたは歯車が軸着
された複数個の歯車軸および入力軸，出力軸を備えてお
り、これらのは従来、互いに平行して両端または一端
を、筐体側軸受板の軸孔や軸受に軸支されている。This type of gear reducer is provided with a plurality of gear shafts that are integral with the gears or have the gears attached thereto, and an input shaft and an output shaft. It is axially supported by the shaft hole of the body side bearing plate and the bearing.
しかしながら、このような従来の歯車減速機において
は、減速のための大小２個の歯車がそれぞれ軸着された
複数個の歯車軸が、互いに軸方向に位相を違えて軸受板
に軸支されているので、複数個の軸受板を並設しなけれ
ばならず、筐体が大形化するという問題があった。また
歯車軸の一端のみを片持状態で軸支する場合には、強度
の確保が難しく高負荷に耐えられないという問題があっ
た。However, in such a conventional gear reducer, a plurality of gear shafts, each of which has two large and small gears for speed reduction, are axially supported on the bearing plate with their phases axially different from each other. Since a plurality of bearing plates must be installed side by side, there is a problem that the housing becomes large. Further, when only one end of the gear shaft is supported in a cantilever state, there is a problem that it is difficult to secure strength and it is not possible to withstand a high load.
このような課題を解決するために本考案では、軸受板に
嵌着した軸受の外周部を内孔が設けられた小径部と大径
部とで段状に形成し、前記大径部の段部を前記軸受板に
突当てるようにして前記小径部を軸受板の軸受孔に嵌着
させ、前記内孔で一方の歯車軸を軸支するとともに、前
記大径部の外周部で前記一方の歯車軸と同芯の歯車軸を
支持させた。In order to solve such a problem, in the present invention, the outer peripheral portion of the bearing fitted to the bearing plate is formed in a step shape with a small diameter portion and a large diameter portion provided with an inner hole, and the step of the large diameter portion is formed. The small diameter portion is fitted into the bearing hole of the bearing plate such that the portion abuts against the bearing plate, and one gear shaft is axially supported by the inner hole, and the one outer diameter portion of the one portion is provided at the outer peripheral portion of the large diameter portion. A gear shaft concentric with the gear shaft was supported.
入力軸の回転は複数個の歯車軸上に軸着された歯車を介
し減速されて出力軸に伝達される。この場合、１枚の軸
受板を２個の歯車軸が共用しているので筐体が小形化し
強度が確保される。The rotation of the input shaft is decelerated and transmitted to the output shaft via gears mounted on a plurality of gear shafts. In this case, since one bearing plate is shared by the two gear shafts, the housing is downsized and the strength is secured.
図は本考案に係る歯車減速機の実施例を示す縦断面図で
あって、これを同図に基づいて説明すると、歯車減速機
１の筐体２は、ステー３で連結された４個の軸受板4,5,
6,7と、外部を覆うカバー８とで形成されており、軸受
板７の孔には、入力軸としてのモータ軸９が係入されて
いる。また、軸受板４の軸受部4aには出力軸10が回転自
在に軸支されており、この出力軸10には、歯車11が一体
形成されている。軸受板6,7の軸受孔には、歯車軸12が
回転自在に軸支されていて、この歯車軸12には、モータ
軸９に固定された小歯車13と噛合う歯車14が固着されて
いる。また、軸受板5,7の軸受孔には、歯車軸15が回転
自在に軸支されていて、この歯車軸15には、歯車軸12と
一体の小歯車16と噛合う歯車17が固着されている。さら
に、軸受板4,6の軸受孔には、歯車軸18が回転自在に軸
支されていて、この歯車軸18には歯車19が固着されてお
り、また歯車軸18には、前記歯車11と噛合う小歯車20が
一体形成されている。FIG. 1 is a vertical cross-sectional view showing an embodiment of a gear reducer according to the present invention, which will be described with reference to FIG. Bearing plates 4,5,
It is formed by 6, 7 and a cover 8 which covers the outside, and a motor shaft 9 as an input shaft is inserted into the hole of the bearing plate 7. An output shaft 10 is rotatably supported on the bearing portion 4a of the bearing plate 4, and a gear 11 is integrally formed on the output shaft 10. A gear shaft 12 is rotatably supported in the bearing holes of the bearing plates 6 and 7, and a gear 14 meshing with a small gear 13 fixed to the motor shaft 9 is fixed to the gear shaft 12. There is. A gear shaft 15 is rotatably supported in the bearing holes of the bearing plates 5 and 7, and a gear 17 meshing with a small gear 16 integral with the gear shaft 12 is fixed to the gear shaft 15. ing. Further, a gear shaft 18 is rotatably supported in the bearing holes of the bearing plates 4 and 6, and a gear 19 is fixed to the gear shaft 18, and the gear shaft 18 has the gear 11 A small gear 20 that meshes with is integrally formed.
そして、軸受板５の軸受孔には、段状に形成された軸受
21が、上下の歯車軸18,15間に位置して嵌着されてい
て、この軸受21の内孔と、軸受板６の軸受孔とには、歯
車軸22が回転自在に軸支されており、歯車軸22と同芯の
前記出力軸10と一体の歯車11は、軸受21の外周を孔に嵌
合させることにより支持されている。23は歯車軸22に固
着させた歯車であって、歯車軸15に一体形成された小歯
車24と噛合っており、また、25は前記歯車19と噛合う歯
車である。The bearing hole of the bearing plate 5 has a stepped bearing.
21 is fitted between the upper and lower gear shafts 18 and 15, and the gear shaft 22 is rotatably supported in the inner hole of the bearing 21 and the bearing hole of the bearing plate 6. The gear 11, which is concentric with the gear shaft 22 and is integral with the output shaft 10, is supported by fitting the outer periphery of the bearing 21 into a hole. A gear 23 fixed to the gear shaft 22 meshes with a small gear 24 integrally formed with the gear shaft 15, and a gear 25 meshes with the gear 19.
このように構成されていることにより、モータ軸９が回
転すると、その回転は歯車13,14を介して歯車軸12に伝
達され、歯車軸12の回転は、歯車16,17を介して歯車軸1
5に伝達される。さらに、歯車軸15の回転は、歯車24,23
を介して歯車軸22に伝達され、歯車軸22の回転は歯車2
5,19を介して歯車軸18に伝達される。そして、歯車軸18
の回転は、歯車20,11を介して出力軸10に伝達される。With this configuration, when the motor shaft 9 rotates, the rotation is transmitted to the gear shaft 12 via the gears 13 and 14, and the rotation of the gear shaft 12 is transmitted via the gears 16 and 17. 1
Transmitted to 5. Further, the rotation of the gear shaft 15 is
The rotation of the gear shaft 22 is transmitted to the gear shaft 22 via
It is transmitted to the gear shaft 18 via 5, 19. And the gear shaft 18
Is transmitted to the output shaft 10 via the gears 20 and 11.
このような歯車減速機においては、互いに同芯の歯車軸
22と出力軸10とが、軸受板５を共用して軸受21に支持さ
れているので、軸受板の数が少なくてよく、筐体２全体
が小形化される。In such a gear reducer, gear shafts that are concentric with each other
Since 22 and the output shaft 10 are supported by the bearing 21 while sharing the bearing plate 5, the number of bearing plates may be small and the housing 2 as a whole can be downsized.
なお、本実施例では、軸受板を共用する同芯の歯車軸と
して歯車軸22と出力軸10とを例示したが、その他の歯車
軸12,15,18やモータ軸９を、軸受板を共用する同芯の軸
として本考案を適用してもよいし、また、本考案を歯車
伝達系内の複数箇所に実施してもよい。また入力軸とし
てモータ軸９を例示したが、原動機の軸と駆動連結され
た軸を歯車減速機１の入力軸としてもよい。In the present embodiment, the gear shaft 22 and the output shaft 10 are illustrated as concentric gear shafts sharing a bearing plate, but the other gear shafts 12, 15, 18 and the motor shaft 9 also share a bearing plate. The present invention may be applied as a concentric shaft, or the present invention may be applied to a plurality of positions in a gear transmission system. Although the motor shaft 9 is illustrated as the input shaft, a shaft drivingly connected to the shaft of the prime mover may be used as the input shaft of the gear reducer 1.
以上の説明より明らかなように本考案によれば歯車減速
機において、軸受板に嵌着した軸受の内孔で一方の歯車
軸を軸支し、この歯車軸と同芯の歯車軸を前記軸受の外
周で支持させたことにより、互いに同芯の２個の歯車軸
が、１個の軸受板を共用して軸受に支持されているの
で、軸受板の数が少なくてよく、減速機全体を小形でコ
ンパクトに構成できるとともに、強度が確保される高負
荷に耐えることができるとともに、軸受が軸受板に嵌着
され固定されているので、軸受に対する歯車軸の位置精
度が容易に得られる。また、軸受の外周部を内孔が設け
られた小径部と大径部とで段状に形成し、大径部の段部
を軸受板に突当てるようにして小径部を軸受板の軸受孔
に嵌着させ、内孔で一方の歯車軸を軸支するとともに、
大径部の外周部で一方の歯車軸と同芯の歯車軸を支持さ
せるようにして、大径部に、軸受板への取付用ストッパ
機能と軸受機能との両機能とを併せもたせるようにした
ので、軸受の厚みを薄くすることができ、これによって
も減速機全体を小型化することが可能となる。As is apparent from the above description, according to the present invention, in the gear reducer, one gear shaft is axially supported by the inner hole of the bearing fitted in the bearing plate, and the gear shaft concentric with the gear shaft is used as the bearing. Since the two gear shafts that are concentric with each other are supported by the bearing by sharing one bearing plate, the number of bearing plates can be small and the entire reducer can be supported. It can be constructed in a small size and compact, can withstand a high load that ensures strength, and because the bearing is fitted and fixed to the bearing plate, the positional accuracy of the gear shaft with respect to the bearing can be easily obtained. In addition, the outer peripheral portion of the bearing is formed in a step shape with a small diameter portion having an inner hole and a large diameter portion, and the step portion of the large diameter portion is abutted against the bearing plate so that the small diameter portion is formed in the bearing hole of the bearing plate. And support one gear shaft in the inner hole,
The outer periphery of the large diameter part supports a gear shaft concentric with one of the gear shafts so that the large diameter part has both a stopper function for mounting on the bearing plate and a bearing function. Therefore, the thickness of the bearing can be reduced, which also makes it possible to downsize the entire reduction gear.
図は本考案に係る歯車減速機の実施例を示す縦断面図で
ある。 １……歯車減速機、4,5,6,7……軸受板、９……モータ
軸、10……出力軸、11,14,17,19,23……歯車、12,15,1
8,22……歯車軸、13……モータ軸、16,20,24,25……小
歯車、21……軸受。FIG. 1 is a vertical sectional view showing an embodiment of a gear reducer according to the present invention. 1 ... Gear reducer, 4,5,6,7 ... Bearing plate, 9 ... Motor shaft, 10 ... Output shaft, 11,14,17,19,23 ... Gear, 12,15,1
8,22 …… Gear shaft, 13 …… Motor shaft, 16,20,24,25 …… Spindle, 21 …… Bearing.
Claims (1)
て出力軸に伝達する歯車減速機において、軸受板に嵌着
した軸受を備え、この軸受の外周部を内孔が設けられた
小径部と大径部とで段状に形成し、前記大径部の段部を
前記軸受板に突当てるようにして前記小径部を軸受板の
軸受孔に嵌着させ、前記内孔で一方の歯車軸を軸支する
とともに、前記大径部の外周部で前記一方の歯車軸と同
芯の歯車軸を支持させたことを特徴とする歯車減速機。1. A gear reducer for decelerating the rotation of an input shaft via a plurality of gears and transmitting it to an output shaft, comprising a bearing fitted to a bearing plate, the outer peripheral portion of which has an inner hole. The small diameter portion and the large diameter portion are formed in a step shape, and the small diameter portion is fitted into the bearing hole of the bearing plate so that the step portion of the large diameter portion abuts against the bearing plate, and A gear reducer, wherein one gear shaft is pivotally supported and a gear shaft concentric with the one gear shaft is supported by an outer peripheral portion of the large diameter portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989062482U JPH0750599Y2 (en) | 1989-05-31 | 1989-05-31 | Gear reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989062482U JPH0750599Y2 (en) | 1989-05-31 | 1989-05-31 | Gear reducer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH032943U JPH032943U (en) | 1991-01-11 |
| JPH0750599Y2 true JPH0750599Y2 (en) | 1995-11-15 |
Family
ID=31591671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989062482U Expired - Fee Related JPH0750599Y2 (en) | 1989-05-31 | 1989-05-31 | Gear reducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750599Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4616984B2 (en) * | 2000-11-24 | 2011-01-19 | シチズンマイクロ株式会社 | Reduction gear |
| JP4948833B2 (en) * | 2005-12-19 | 2012-06-06 | 株式会社シマノ | scissors |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60194645U (en) * | 1984-06-06 | 1985-12-25 | 石川島播磨重工業株式会社 | Multi-stage reduction gearing |
-
1989
- 1989-05-31 JP JP1989062482U patent/JPH0750599Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH032943U (en) | 1991-01-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |