JPH0362927B2 - - Google Patents
Info
- Publication number
- JPH0362927B2 JPH0362927B2 JP2292761A JP29276190A JPH0362927B2 JP H0362927 B2 JPH0362927 B2 JP H0362927B2 JP 2292761 A JP2292761 A JP 2292761A JP 29276190 A JP29276190 A JP 29276190A JP H0362927 B2 JPH0362927 B2 JP H0362927B2
- Authority
- JP
- Japan
- Prior art keywords
- hub
- leaf spring
- protrusion
- hole
- fixed
- 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
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本考案は、例えば複写機等に使用され樹脂製の
ハブを備えた電磁連結装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an electromagnetic coupling device that is used in, for example, a copying machine and includes a hub made of resin.
従来、この種の電磁連結装置のうち、例えば電
磁クラツチの一例としては第４図に示すものが採
用されており、これを同図に基づいて概略説明す
ると、同図において、１はコイル２を内蔵するス
テータであり、３はライニング４が固定されたロ
ータで、キー５により被動軸６に固定されてい
る。７は歯車８を有する熱可塑性樹脂製のハブ
で、筒状に形成されて前記被動軸６に回転自在に
設けられている。またこのハブ７には周方向に複
数のねじ孔９（一個のみ図示）が設けられてい
る。１０は復帰用の板ばねで、前記ねじ孔９に螺
合されたねじ１１によつて前記ハブ７に固定され
ている。この板ばね１０の前記ライニング４に対
向する部位にはアマチユア１２がリベツト１３に
よつて固定されている。そして、このアマチユア
１２と前記ロータ３との間には常時一定のギヤツ
プｇが保たれている。
Conventionally, among this type of electromagnetic coupling device, the one shown in FIG. 4 has been adopted as an example of an electromagnetic clutch, and this will be briefly explained based on the same figure. It is a built-in stator, and 3 is a rotor to which a lining 4 is fixed, and is fixed to a driven shaft 6 by a key 5. Reference numeral 7 denotes a hub made of thermoplastic resin and having a gear 8, which is formed into a cylindrical shape and is rotatably provided on the driven shaft 6. Further, the hub 7 is provided with a plurality of screw holes 9 (only one is shown) in the circumferential direction. Reference numeral 10 denotes a return leaf spring, which is fixed to the hub 7 by a screw 11 screwed into the screw hole 9. An armature 12 is fixed to a portion of the leaf spring 10 facing the lining 4 by a rivet 13. A constant gap g is always maintained between the armature 12 and the rotor 3.
したがつて、コイル２に電流を流すと同図に破
線で示すように磁束Φが生じて磁気回路が形成さ
れ、アマチユア１２は板ばね１０の弾撥力に抗し
てロータ３に吸引される。そして、駆動側の回転
は歯車８、板ばね１０、アマチユア１２、ライニ
ング４、ロータ３、キー５を介して被動軸６に伝
達される。 Therefore, when a current is passed through the coil 2, a magnetic flux Φ is generated as shown by the broken line in the figure, forming a magnetic circuit, and the armature 12 is attracted to the rotor 3 against the elastic force of the leaf spring 10. . The rotation on the drive side is transmitted to the driven shaft 6 via the gear 8, leaf spring 10, armature 12, lining 4, rotor 3, and key 5.
一方、電流を切ると磁束が消失してアマチユア
１２は板ばね１０の弾撥力によりロータ３から離
間し回転が遮断される。 On the other hand, when the current is turned off, the magnetic flux disappears, and the armature 12 is separated from the rotor 3 by the elastic force of the leaf spring 10, and rotation is interrupted.
ところが、従来の電磁クラツチにおいては、ハ
ブ７が膨張、収縮度の大きい合成樹脂で形成され
ているため、熱変化によるねじ１１の緩みによつ
てその締結力がなくなり、板ばね１０が破損する
か、あるいはアマチユア１２に板ばね１０の弾撥
力が作用しなくなるかして、コイル２の通電が停
止されているにもかかわらずロータ３とアマチユ
ア１２が接触するという不都合があつた。
However, in conventional electromagnetic clutches, since the hub 7 is made of synthetic resin that expands and contracts with a high degree of expansion and contraction, the tightening force is lost due to loosening of the screw 11 due to thermal changes, and the leaf spring 10 may be damaged. Alternatively, the elastic force of the leaf spring 10 may no longer act on the armature 12, resulting in the inconvenience that the rotor 3 and the armature 12 come into contact even though the coil 2 is de-energized.
そこで、ねじ１１の代わりに鉄系のリベツトを
使用してい板ばね１０をハブ７にかしめ固定する
ことも考えられるが、この場合かしめ圧力により
ハブ７側の部材が破損するという問題がある。 Therefore, it is conceivable to use iron-based rivets instead of the screws 11 to caulk and fix the leaf spring 10 to the hub 7, but in this case there is a problem that the components on the hub 7 side are damaged by the caulking pressure.
本発明はこのような事情に鑑みなされたもの
で、板ばねのハブへの固着能力が保証でき、かつ
安価に製作できる電磁連結装置を提供するもので
ある。 The present invention was made in view of the above circumstances, and it is an object of the present invention to provide an electromagnetic coupling device that can guarantee the ability to fix a leaf spring to a hub and can be manufactured at low cost.
本発明に係る電磁連結装置は、合成樹脂製のハ
ブに一体に形成され、板ばねを支特する突起部
と、この突起部に対応して板ばねに設けられた貫
通孔と、この貫通孔の開口周縁に一体に設けられ
て前記ハブに埋没された筒部とを備えたものであ
る。
The electromagnetic coupling device according to the present invention includes a protrusion that is integrally formed with a hub made of synthetic resin and supports a leaf spring, a through hole provided in the leaf spring corresponding to the protrusion, and a through hole that supports the leaf spring. and a cylindrical portion that is integrally provided on the periphery of the opening of the hub and is embedded in the hub.
本発明においては、板ばねの筒部をハブに埋没
させると共にハブの突起部を変形させて板ばねを
支持したので、板ばねをハブに対し確実に固着す
ることができる。
In the present invention, since the cylindrical portion of the leaf spring is buried in the hub and the protrusion of the hub is deformed to support the leaf spring, the leaf spring can be reliably fixed to the hub.
第１図は本発明の一実施例である電磁クラツチ
を示す断面図、第２図および第３図は同じく電磁
クラツチのハブと板ばねを示す断面図で、同図に
おいて第４図と同一の部材については同一の符号
を付し、詳細な説明は省略する。同図において、
符号２１は後述するハブに対し超音波溶着により
固着される復帰用の板ばねで、前記アマチユア１
２と反対側の端部に貫通孔２２が設けられてお
り、この貫通孔２２の開口周縁にはバーリング加
工により筒部としてのフランジ２３が設けられて
いる。２４は歯車２５を有する熱可塑性樹脂で形
成されたハブで、前記ロータ３側の部位には前記
貫通孔２２が嵌入し固定される複数の突起部２６
（一個のみ図示）が所定の等間隔を隔てて設けら
れている。
FIG. 1 is a sectional view showing an electromagnetic clutch which is an embodiment of the present invention, and FIGS. 2 and 3 are sectional views showing the hub and leaf spring of the electromagnetic clutch. The same reference numerals are given to the members, and detailed description thereof will be omitted. In the same figure,
Reference numeral 21 denotes a return leaf spring fixed to the hub by ultrasonic welding, which will be described later.
A through hole 22 is provided at the end opposite to 2, and a flange 23 as a cylindrical portion is provided at the opening periphery of this through hole 22 by burring. A hub 24 is made of thermoplastic resin and has a gear 25, and a plurality of protrusions 26 into which the through hole 22 is fitted and fixed are provided on the rotor 3 side.
(only one is shown) are provided at predetermined equal intervals.
したがつて、板ばね２１をハブ２４に固着する
には、先ずハブ２４の突起部２６に板ばね２１の
貫通孔２２を嵌入する。次に板ばね２１およびハ
ブ２４を超音波溶接装置（図示せず）の両音極間
に保持する。そして、加圧しながら両部材２１，
２４に超音波振動を与えて上記フランジ２３をハ
ブ２４に埋没させると同時に突起部２６を溶融さ
せる。 Therefore, in order to fix the leaf spring 21 to the hub 24, first the through hole 22 of the leaf spring 21 is fitted into the protrusion 26 of the hub 24. Next, the leaf spring 21 and the hub 24 are held between the two sonic poles of an ultrasonic welding device (not shown). Then, while applying pressure, both members 21,
24 to bury the flange 23 in the hub 24 and melt the protrusion 26 at the same time.
このようにして、板ばね２１をハブ２４に対し
確実に固着することができる。 In this way, the leaf spring 21 can be securely fixed to the hub 24.
また、実施例においては、板ばね２１のフラン
ジ２３がバーリング加工により形成されるものを
示したが、本発明はこれに限定されるものではな
く、フランジ２３が例えば絞り加工等の他のプレ
ス加工により形成されるものでも勿論よい。 Further, in the embodiment, the flange 23 of the leaf spring 21 is formed by burring, but the present invention is not limited to this, and the flange 23 may be formed by other press processing such as drawing. Of course, a structure formed by the above may also be used.
以上説明したように本発明によれば、超音波溶
着にて、板ばねの筒部をハブに埋没させ、、かつ、
ハブの突起部を熱変形させたので、、板ばねを回
転方向及び軸方向共にハブに確実に固着すること
ができる。しかも、筒部の埋没により両部材間の
密着性に優れ、接合強度は高くその固着能力も充
分保証される。また、従来のようにねじ固定によ
るものではないから、ねじ加工が不要となり組立
の合理化を計ることができる。さらに、ハブは合
成樹脂製であるから、材料費が安価になるだけで
なく、ハブと被動軸間に軸受を設ける必要がなく
なり、部品点数の削減によるコストの低廉化を計
ることもできる。
As explained above, according to the present invention, the cylindrical portion of the leaf spring is buried in the hub by ultrasonic welding, and
Since the protrusion of the hub is thermally deformed, the leaf spring can be reliably fixed to the hub in both the rotational and axial directions. Furthermore, due to the embedding of the cylindrical portion, the adhesion between the two members is excellent, the joint strength is high, and the fixing ability is sufficiently guaranteed. In addition, since it is not fixed with screws as in the past, screw machining is not required and assembly can be streamlined. Furthermore, since the hub is made of synthetic resin, not only is the material cost low, but there is no need to provide a bearing between the hub and the driven shaft, and costs can be reduced by reducing the number of parts.
第１図は本発明の一実施例を示す断面図、第２
図および第３図は第１図に示す一実施例のハブと
板ばねを示す断面図、第４図は従来装置を示す断
面図である。
１２……アマチユア、２１……板ばね、２２…
…貫通孔、２３……フランジ、２４……ハブ、２
６……突起部。なお、各図中同一符号は同一、ま
たは相当部分を示す。
FIG. 1 is a cross-sectional view showing one embodiment of the present invention, and FIG.
3 and 3 are cross-sectional views showing the hub and leaf spring of the embodiment shown in FIG. 1, and FIG. 4 is a cross-sectional view showing a conventional device. 12... Amachiyua, 21... Leaf spring, 22...
...Through hole, 23...Flange, 24...Hub, 2
6...Protrusion. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
樹脂製のハブを備えた電磁連結装置において、前
記ハブに一体に突起部を設け、前記板ばねに前記
突起部が貫挿される貫通孔を設けると共にこの貫
通孔の開口周縁に筒部を一体に設けて、超音波溶
着にて前記板ばねの筒部を前記ハブに埋没させ、
かつ、前記ハブの突起部を熱変形させて前記板ば
ねを前記ハブに固定したことを特徴とする電磁連
結装置。1. In an electromagnetic coupling device equipped with a synthetic resin hub to which an armature is fixed via a leaf spring, the hub is integrally provided with a protrusion, the leaf spring is provided with a through hole into which the protrusion is inserted, and A cylindrical portion is integrally provided around the opening of the through hole, and the cylindrical portion of the leaf spring is embedded in the hub by ultrasonic welding,
An electromagnetic coupling device characterized in that the leaf spring is fixed to the hub by thermally deforming a protrusion of the hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2292761A JPH03163227A (en) | 1990-10-29 | 1990-10-29 | Electromagnetic coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2292761A JPH03163227A (en) | 1990-10-29 | 1990-10-29 | Electromagnetic coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03163227A JPH03163227A (en) | 1991-07-15 |
| JPH0362927B2 true JPH0362927B2 (en) | 1991-09-27 |
Family
ID=17785995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2292761A Granted JPH03163227A (en) | 1990-10-29 | 1990-10-29 | Electromagnetic coupler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03163227A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324888A (en) * | 1992-10-13 | 1994-06-28 | Olin Corporation | Metal electronic package with reduced seal width |
-
1990
- 1990-10-29 JP JP2292761A patent/JPH03163227A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03163227A (en) | 1991-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |