JPH0674080U - Brushless motor preload device - Google Patents
Brushless motor preload deviceInfo
- Publication number
- JPH0674080U JPH0674080U JP1280393U JP1280393U JPH0674080U JP H0674080 U JPH0674080 U JP H0674080U JP 1280393 U JP1280393 U JP 1280393U JP 1280393 U JP1280393 U JP 1280393U JP H0674080 U JPH0674080 U JP H0674080U
- Authority
- JP
- Japan
- Prior art keywords
- rotary shaft
- preload
- bearing
- brushless motor
- retaining ring
- 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.)
- Granted
Links
Landscapes
- Brushless Motors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
(57)【要約】
【目的】 ブラシレスモータの予圧装置において、組立
工数の低減と組立の自動化を目的とする。
【構成】 回転軸１４の軸受挿入部１４ａおよび予圧印
加部１４ｂと回転軸先端部１４ｃとの間に微小段差を有
し、止め輪６は回転軸先端部１４ｃではすき間ばめ、予
圧印加部１４ｂでは圧入構成となる寸法で仕上げられた
円板状の金属板で形成することにより、予圧印加工程の
組立工数の削減および組立の自動化が可能な予圧装置に
することができる。
(57) [Abstract] [Purpose] The purpose of the preload device for brushless motors is to reduce the number of assembly steps and automate assembly. [Structure] There is a minute step between the bearing insertion portion 14a and the preload application portion 14b of the rotary shaft 14 and the rotary shaft tip portion 14c, and the retaining ring 6 is fitted in the clearance at the rotary shaft tip portion 14c, and the preload application portion 14b. With a disk-shaped metal plate finished with a press-fitting configuration, the preloading device can reduce the number of assembly steps in the preloading step and automate the assembly.
Description
【０００１】[0001]
本考案は民生機器や事務機器に駆動源として用いられるブラシレスモータの予 圧装置に関するものである。 The present invention relates to a preload device for a brushless motor used as a drive source for consumer equipment and office equipment.
【０００２】[0002]
近年、ブラシレスモータは民生機器，事務機器の普及に伴ない低価格化，組立 性の良さが要求されている。 In recent years, brushless motors have been required to be low in price and easy to assemble with the spread of consumer equipment and office equipment.
【０００３】 以下に、図面を参照しながら従来のブラシレスモータの一例について説明する 。An example of a conventional brushless motor will be described below with reference to the drawings.
【０００４】 図２は従来のブラシレスモータの要部を示したものである。図２において１は 回転子、２は固定子、３および４は軸受、５はバネ、６は止め輪である。FIG. 2 shows a main part of a conventional brushless motor. In FIG. 2, 1 is a rotor, 2 is a stator, 3 and 4 are bearings, 5 is a spring, and 6 is a retaining ring.
【０００５】 回転子１は、磁性材料でカップ状に形成されたロータフレーム１１の内側に永 久磁石１２を固定した構造の回転子本体１３と、回転子本体１３に取り付けられ た回転軸１４とからなっている。回転軸１４は、ロータフレーム１１の底壁部１ １ａの中央部に一体に形成されたボス部１１ｂの内周に圧入固定されている。The rotor 1 includes a rotor body 13 having a structure in which a permanent magnet 12 is fixed inside a rotor frame 11 formed of a magnetic material in a cup shape, and a rotary shaft 14 attached to the rotor body 13. It consists of The rotating shaft 14 is press-fitted and fixed to the inner circumference of a boss portion 11b formed integrally with the central portion of the bottom wall portion 11a of the rotor frame 11.
【０００６】 固定子２は電機子鉄芯２１と、電機子鉄芯２１に巻装された電機子コイル２２ と、電機子鉄芯２１の内側に配置されたハウジング２３とからなっている。ハウ ジング２３の内周には軸受３および４の外輪が嵌着され、軸受３と４の内輪には 回転軸１４が接着もしくは圧入により固定されている。またハウジングの段差部 ２３ａと軸受３との間にはバネ５が配置され、回転軸１４に形成された溝１４ａ に止め輪６が挿入固定されている。The stator 2 includes an armature iron core 21, an armature coil 22 wound around the armature iron core 21, and a housing 23 arranged inside the armature iron core 21. Outer rings of the bearings 3 and 4 are fitted on the inner periphery of the housing 23, and a rotary shaft 14 is fixed to the inner rings of the bearings 3 and 4 by adhesion or press fitting. A spring 5 is arranged between the step portion 23a of the housing and the bearing 3, and a retaining ring 6 is inserted and fixed in a groove 14a formed in the rotary shaft 14.
【０００７】[0007]
【考案が解決しようとする課題】 しかしながら上記の従来の構成では、軸受に予圧を印加する際に、軸受の外輪 に荷重を加えバネを圧縮しながら止め輪（Ｃ形止め輪、Ｅ形止め輪等）を回転軸 に形成した溝に挿入固定しなくてはならず、組立工数の削減に制限が発生すると いう問題点を有していた。However, in the above-mentioned conventional configuration, when a preload is applied to the bearing, a load is applied to the outer ring of the bearing and the spring is compressed to compress the retaining ring (C-type retaining ring, E-type retaining ring). Had to be inserted and fixed in the groove formed on the rotary shaft, and there was a problem that the reduction of the assembly man-hour would occur.
【０００８】 本考案はこのような問題点を解決するもので、止め輪を回転軸に圧入固定する ことにより、予圧印加工程の工数削減を行い、低価格で高精能なブラシレスモー タを提供することを目的とする。The present invention solves such a problem, and by fixing the retaining ring to the rotary shaft by press fitting, the man-hour of the preload application process is reduced, and a highly-priced brushless motor is provided at low cost. The purpose is to do.
【０００９】[0009]
この目的を達成するために本考案のブラシレスモータの予圧装置は、回転軸の 軸受挿入部および予圧印加部と、回転軸先端部との間に微小段差を有し、止め輪 を円板状の金属板で形成し、回転軸に固定する際に回転軸先端部ではすき間ばめ 構成、予圧印加部では圧入構成とし、また予圧印加部と回転軸先端部とのつなぎ 部をテーパー形状とした構成を備えたものである。 In order to achieve this object, the brushless motor preload device of the present invention has a minute step between the bearing insertion part of the rotary shaft and the preload application part and the tip of the rotary shaft, and the retaining ring has a disc shape. Formed with a metal plate, and when fixed to the rotating shaft, the tip of the rotating shaft has a clearance fit structure, the preload applying part has a press-fitting configuration, and the connecting part between the preload applying part and the rotating shaft end has a tapered shape. It is equipped with.
【００１０】[0010]
この構成によって、止め輪を定位置まで容易に圧入することができ、軸受に予 圧を一定量安定して印加することができる。このため、軸受外輪に荷重を印加し ながら止め輪を回転軸の溝に挿入固定する必要がなくなり、組立工数の削減およ び組立の自動化が可能となる。 With this configuration, the retaining ring can be easily press-fitted to a fixed position, and a predetermined amount of preload can be stably applied to the bearing. For this reason, it becomes unnecessary to insert and fix the retaining ring into the groove of the rotary shaft while applying a load to the outer ring of the bearing, so that the number of assembling steps can be reduced and the assembling can be automated.
【００１１】[0011]
以下本考案の一実施例について、図面にもとづき説明する。 An embodiment of the present invention will be described below with reference to the drawings.
【００１２】 図１は本実施例の一例を示すブラシレスモータの構成を示したものである。図 １において１３は回転子本体、１４は回転軸、３および４は軸受、５はバネ、６ は止め輪、２３はハウジングである。以上によりブラシレスモータの予圧印加部 を構成している。FIG. 1 shows the configuration of a brushless motor showing an example of this embodiment. In FIG. 1, 13 is a rotor body, 14 is a rotating shaft, 3 and 4 are bearings, 5 is a spring, 6 is a retaining ring, and 23 is a housing. The above constitutes the preload application part of the brushless motor.
【００１３】 回転軸１４は、軸受挿入部１４ａおよび予圧印加部１４ｂと、回転軸先端部１ ４ｃとの間に微小段差を有し、さらに予圧印加部１４ｂと回転軸先端部１４ｃと のつなぎ部はテーパー形状となっており、止め輪６は回転軸先端部１４ｃではす き間ばめ、予圧印加部１４ｂでは圧入構成となる寸法で仕上げられた円板状の金 属板で形成されている。軸受３には止め輪６を圧入した際に同時に圧縮されたバ ネ５によって一定の予圧が印加されている。The rotating shaft 14 has a minute step between the bearing insertion portion 14a and the preload applying portion 14b and the rotating shaft tip portion 14c, and further, a connecting portion between the preload applying portion 14b and the rotating shaft tip portion 14c. Has a tapered shape, and the retaining ring 6 is formed by a disc-shaped metal plate finished with a clearance fit at the rotary shaft tip portion 14c and a press-fitting configuration at the preload application portion 14b. . A constant preload is applied to the bearing 3 by the compressed vane 5 at the same time when the retaining ring 6 is press-fitted.
【００１４】 以上のように構成された本実施例によれば、軸受外輪に荷重しながら止め輪を 回転軸の溝に挿入固定する必要がなくなり、組立工数の削減および組立の自動化 が可能となる。According to the present embodiment configured as described above, it is not necessary to insert and fix the retaining ring into the groove of the rotating shaft while loading the bearing outer ring, and it is possible to reduce the number of assembling steps and automate the assembling. .
【００１５】[0015]
以上のように本考案は、回転軸の軸受挿入部と予圧印加部と回転軸先端部との 間に微小段差を有し、予圧印加部と回転軸先端部とのつなぎ部はテーパー形状と なっており、止め輪を回転軸先端部ではすき間ばめ、予圧印加部では圧入構成と なる寸法で仕上げられた円板状金属板で形成することにより、ブラシレスモータ の工数削減および組立の自動化を行うことができ、低価格で高精能なモータを提 供することができる。 As described above, the present invention has a minute step between the bearing insertion part of the rotary shaft, the preload applying part, and the tip of the rotary shaft, and the connecting part between the preload applying part and the tip of the rotary shaft is tapered. The snap ring is fitted with a clearance at the tip of the rotary shaft, and the preload application part is made of a disk-shaped metal plate that is finished to the size of the press-fitting configuration. Therefore, it is possible to provide a low-priced and highly sophisticated motor.
【図面の簡単な説明】[Brief description of drawings]
【図１】本考案の一実施例におけるブラシレスモータの
構造図FIG. 1 is a structural diagram of a brushless motor according to an embodiment of the present invention.
【図２】従来例のブラシレスモータの要部構造図FIG. 2 is a structural diagram of a main part of a conventional brushless motor.
１ 回転子 ２ 固定子 ３，４ 軸受 ５ バネ ６ 止め輪 １３ 回転子本体 １４ 回転軸 １４ａ 軸受挿入部 １４ｂ 予圧印加部 １４ｃ 回転軸先端部 1 Rotor 2 Stator 3,4 Bearing 5 Spring 6 Retaining Ring 13 Rotor Main Body 14 Rotating Shaft 14a Bearing Insertion Part 14b Preload Applying Part 14c Rotating Shaft Tip Part
Claims (1)
れた永久磁石とこの永久磁石を保持するロータフレーム
を回転軸に装着した回転子と、この回転子を回転自在に
支承する軸受と、この軸受に予圧を印加するバネと、こ
のバネを圧縮し前記回転軸に固定される止め輪とよりな
るブラシレスモータの予圧装置において、前記回転軸の
軸受挿入部および予圧印加部と回転軸先端部との間に微
小段差を備え、前記止め輪を円板状の金属板で形成し、
前記回転軸に固定する際に前記回転軸先端部ではすき間
ばめ構成とし、前記予圧印加部では圧入構成とし、止め
輪を定位置まで圧入することによって前記軸受に予圧を
印加する構成としたことを特徴とするブラシレスモータ
の予圧装置。1. A permanent magnet magnetized in multiple poles to generate a field magnetic flux, a rotor having a rotor frame holding the permanent magnet mounted on a rotary shaft, and a bearing rotatably supporting the rotor. And a spring for applying a preload to the bearing, and a retaining ring that compresses the spring and is fixed to the rotary shaft, in a preload device for a brushless motor, wherein a bearing insertion portion and a preload applying portion of the rotary shaft and the rotary shaft are provided. A minute step is provided between the tip and the snap ring, which is formed of a disc-shaped metal plate.
When fixing to the rotary shaft, a clearance fit structure is provided at the rotary shaft tip end, a press-fitting structure is provided at the preload applying part, and a preload is applied to the bearing by press-fitting a retaining ring to a fixed position. Brushless motor preloading device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280393U JP2581468Y2 (en) | 1993-03-22 | 1993-03-22 | Preload device for brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280393U JP2581468Y2 (en) | 1993-03-22 | 1993-03-22 | Preload device for brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0674080U true JPH0674080U (en) | 1994-10-18 |
| JP2581468Y2 JP2581468Y2 (en) | 1998-09-21 |
Family
ID=11815556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1280393U Expired - Lifetime JP2581468Y2 (en) | 1993-03-22 | 1993-03-22 | Preload device for brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2581468Y2 (en) |
-
1993
- 1993-03-22 JP JP1280393U patent/JP2581468Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2581468Y2 (en) | 1998-09-21 |
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