JPH11201192A - Electromagnetic clutch - Google Patents

Electromagnetic clutch

Info

Publication number
JPH11201192A
JPH11201192A JP10006670A JP667098A JPH11201192A JP H11201192 A JPH11201192 A JP H11201192A JP 10006670 A JP10006670 A JP 10006670A JP 667098 A JP667098 A JP 667098A JP H11201192 A JPH11201192 A JP H11201192A
Authority
JP
Japan
Prior art keywords
rotor
armature
armature plate
electromagnetic clutch
friction surface
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
Application number
JP10006670A
Other languages
Japanese (ja)
Inventor
Kenji Okuzono
賢治 奥園
Nobunao Tsuchida
信直 土田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10006670A priority Critical patent/JPH11201192A/en
Publication of JPH11201192A publication Critical patent/JPH11201192A/en
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce the collision energy when an armature plate is attracted to a roller, and reduce the occurrence of attractive sound by setting the clearance between the armature frictional surface of an electromagnetic clutch and the frictional surface of the rotor uneven to have a specific value or more in all the circumferencial direction. SOLUTION: An electromagnetic clutch for intermittently transmitting power to the compressor of the air conditioner for an automobile is provided with a rotor 6 turned by an engine through a belt, and an armature 9 arranged on the same shaft as the rotor 6, fixed to the compressor main shaft 13 via elastic bodies 18-1, and having an armature plate 10 movable in the axial direction. The rotor 6 and the armature plate 10 are frictionally connected by the electromagnetic force produced by the current carrying to an exciting coil 1. In this case, the clearance between the armature frictional surface 11 and the rotor frictional surface 8 is set uneven to have 0.2 μm or more in all the circumferential direction by making the thickness of the armature plate 10 uneven or the like. Thus, the collision connecting time at the time of attraction of the armature plate 10 is prolonged for relieving the collision energy.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、電磁クラッチに関
するもので、自動車用空調装置等に付設される圧縮機へ
の駆動力伝達を断続する電磁クラッチに適したものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic clutch, and more particularly, to an electromagnetic clutch for intermittently transmitting driving force to a compressor provided in an air conditioner or the like for an automobile.

【0002】[0002]

【従来の技術】従来の電磁クラッチは、摩擦面での吸
引、接合時に発生する吸着音を低減する目的で、ゴムま
たは板バネ等の弾性力を用い、アマチュアを保持する方
式が採用されている。
2. Description of the Related Art A conventional electromagnetic clutch employs a method of holding an armature by using an elastic force of rubber or a leaf spring for the purpose of reducing suction noise generated at the time of suction and joining on a friction surface. .

【0003】この種の電磁クラッチの一般的な構造は、
ゴムダンパータイプの場合、図3に示すように、1は電
磁力を発生させる励磁コイル、2はU字型断面形状の継
鉄部材で、内部に励磁コイル1を樹脂材3にて固着し、
側端面にフランジ4を溶接等により固定、フランジ4を
介して圧縮機フロントプレート5に固定されている。
[0003] The general structure of this type of electromagnetic clutch is as follows.
In the case of the rubber damper type, as shown in FIG. 3, 1 is an exciting coil for generating an electromagnetic force, 2 is a yoke member having a U-shaped cross section, and the exciting coil 1 is fixed inside with a resin material 3,
The flange 4 is fixed to the side end face by welding or the like, and is fixed to the compressor front plate 5 via the flange 4.

【0004】ロータ6は、エンジンにVベルト(図示せ
ず)で連結され、ベアリング7により圧縮機フロントプ
レート5に回転自在に支持されている。ロータ6は、側
端面に摩擦面8を形成し、この摩擦面とわずかな空間を
おいて、このロータ6と同軸上にアマチュア9が配設さ
れている。アマチュア9には、アマチュア板10として
前記ロータ摩擦面8と摩擦接合する摩擦面11を形成し
ている。一方、ハブ12を圧縮機主軸13に、スプライ
ン14、ボルト15等により固定し、ストッパープレー
ト19の外側に皿状のダンパーケース16を溶接固定
し、ダンパーケース16内部に、内側をリベット17に
加硫接着したゴムダンパー18を圧入、リベット17を
前記アマチュア板10に加締め固定してアマチュア9を
構成している。
The rotor 6 is connected to the engine by a V-belt (not shown), and is rotatably supported on the compressor front plate 5 by bearings 7. The rotor 6 has a friction surface 8 formed on a side end surface, and an armature 9 is disposed coaxially with the rotor 6 with a slight space from the friction surface. On the amateur 9, a friction surface 11 is formed as an amateur plate 10 to be frictionally joined with the rotor friction surface 8. On the other hand, the hub 12 is fixed to the compressor main shaft 13 with splines 14, bolts 15 and the like, a dish-shaped damper case 16 is fixed by welding to the outside of the stopper plate 19, and the inside is attached to the rivet 17 inside the damper case 16. An armature 9 is formed by press-fitting a rubber damper 18 to which sulfur bonding has been performed and by caulking and fixing the rivet 17 to the armature plate 10.

【0005】次に上記従来の電磁クラッチの動作につい
て説明する。上記構成において励磁コイル1に通電する
と、図3の破線で示すように磁気回路が形成されアマチ
ュア板10がロータ6に吸引し、アマチュア板摩擦面1
1とロータ摩擦面8が摩擦接合し、ロータ6の回転が主
軸13へ伝達される。次に励磁コイル1への通電を停止
すると、ゴムダンパー18のゴムバネ力により、アマチ
ュア板10はロータ6から離れるため、主軸13へのエ
ンジンからの回転動力伝達は遮断される。
Next, the operation of the conventional electromagnetic clutch will be described. When the exciting coil 1 is energized in the above configuration, a magnetic circuit is formed as shown by a broken line in FIG. 3 and the armature plate 10 is attracted to the rotor 6 and the armature plate friction surface 1
1 and the rotor friction surface 8 are friction-welded, and the rotation of the rotor 6 is transmitted to the main shaft 13. Next, when the energization of the exciting coil 1 is stopped, the armature plate 10 is separated from the rotor 6 by the rubber spring force of the rubber damper 18, so that the transmission of the rotational power from the engine to the main shaft 13 is cut off.

【0006】[0006]

【発明が解決しようとする課題】しかしながら、上記構
成の電磁クラッチでは、アマチュア板10がロータ6に
吸引、摩擦面の接合時に金属同士の衝突接合音(以下、
吸着音と呼ぶ)が発生し、電磁クラッチの吸引の度に金
属音が発生、不快感を与えるという問題点を有してい
る。吸着音が大きい要因として、吸着時のアマチュア板
10のロータ6への衝突エネルギーの大きさがあり、そ
れを緩和させるため種々の策が用いられる。例えば、ロ
ータ摩擦面8に、繊維樹脂よりなる環状の摩擦材20を
配設し、金属面同士の衝突を緩和し、吸着音を低減する
方法があるが、摩擦材20をロータ摩擦面8へ接着する
工数や、摩擦材20自体のコスト大等の欠点を有してい
る。
However, in the electromagnetic clutch having the above-described structure, the armature plate 10 is attracted to the rotor 6 and the sound of collision between metals (hereinafter, referred to as "below") when the friction surface is joined.
This causes a problem that a metallic sound is generated every time the electromagnetic clutch is sucked, which causes discomfort. The cause of the large suction noise is the magnitude of the collision energy of the armature plate 10 against the rotor 6 at the time of suction, and various measures are used to alleviate this. For example, there is a method of arranging an annular friction material 20 made of fiber resin on the rotor friction surface 8 to reduce the collision between metal surfaces and reduce the suction noise. It has disadvantages such as the number of steps for bonding and the large cost of the friction material 20 itself.

【0007】本発明は、前記摩擦材20を用いることな
く、吸着音を低減することを目的とするものである。
An object of the present invention is to reduce the suction noise without using the friction material 20.

【0008】[0008]

【課題を解決するための手段】本発明はアマチュア摩擦
面とロータ摩擦面とのスキマを全円周方向で不均一に設
定し、アマチュア板がロータに吸着する際の衝突接合時
間を長期化させ、衝突エネルギーを緩和し、吸着音を低
減させるとした点にある。
According to the present invention, the gap between the armature friction surface and the rotor friction surface is set to be non-uniform in the entire circumferential direction, and the collision joining time when the armature plate is attracted to the rotor is extended. The point is that the collision energy is reduced and the suction sound is reduced.

【0009】上記構成により、摩擦面への摩擦材配設を
行わないで、吸着音の低減が可能となる。
According to the above configuration, it is possible to reduce the suction noise without disposing the friction material on the friction surface.

【0010】[0010]

【発明の実施の形態】上記の課題を解決するための請求
項1に記載の発明は、アマチュア摩擦面とロータ摩擦面
とのスキマを全円周方向で0.2mm以上不均一に設定
したものである。そして、この構成によればアマチュア
板がロータに吸着する衝突エネルギーが緩和され、吸着
音を低減することができる。
According to the first aspect of the present invention, there is provided an invention in which a gap between an armature friction surface and a rotor friction surface is set to be not less than 0.2 mm in all circumferential directions. It is. According to this configuration, the collision energy at which the armature plate is attracted to the rotor is reduced, and the attraction sound can be reduced.

【0011】[0011]

【実施例】以下に本発明の実施例について図面を参照し
て説明する。
Embodiments of the present invention will be described below with reference to the drawings.

【0012】(実施例)図1は本発明の電磁クラッチの
正面図、図2は正面図でのA−A縦断面図で、従来の電
磁クラッチとの相違点は、アマチュア摩擦面とロータ摩
擦面とのスキマを意図的に全円周方向において0.2m
m以上不均一に設定した点にある。
(Embodiment) FIG. 1 is a front view of an electromagnetic clutch according to the present invention, and FIG. 2 is a longitudinal sectional view taken along the line A--A of the electromagnetic clutch of the present invention. 0.2m intentionally in the circumferential direction
m or more.

【0013】即ち、例えばアマチュア板の肉厚を不均一
にすること等により第一ゴムダンパー18−1、第二ゴ
ムダンパー18−2、第三ゴムダンパー18−3の各々
の点におけるアマチュア摩擦面とロータ摩擦面のスキマ
設定値を表1発明品に示す如く、0.2mm以上不均一
に設定することが可能となる。
That is, the amateur friction surface at each point of the first rubber damper 18-1, the second rubber damper 18-2, and the third rubber damper 18-3, for example, by making the thickness of the amateur plate non-uniform. As shown in Table 1, the clearance setting value of the rotor friction surface can be set to be non-uniformly at least 0.2 mm.

【0014】この状態で励磁コイル1に通電した場合、
アマチュア板10はスキマの最も狭いゴムダンパー18
−1の点よりロータ摩擦面8に吸引、接合し、その次に
スキマの狭いゴムダンパー18−2の点で吸引、接合、
最後に最もスキマの広いゴムダンパー18−3の点で吸
引、接合を行い、アマチュア摩擦面とロータ摩擦面のス
キマがほぼ均一な場合より、明らかに吸引、接合時間が
長く設定できる。本設定により、表1に示す如くアマチ
ュア板10のロータ6へ吸着する際の衝突エネルギーは
緩和され、吸着音を低減することが可能となる。
When the excitation coil 1 is energized in this state,
Amateur board 10 is the narrowest rubber damper 18
−1, suction and bonding to the rotor friction surface 8, and then suction and bonding at the point of the rubber damper 18-2 with a narrow gap.
Finally, suction and joining are performed at the point of the rubber damper 18-3 having the largest gap, so that the suction and joining time can be set to be clearly longer than when the gap between the amateur friction surface and the rotor friction surface is substantially uniform. With this setting, as shown in Table 1, the collision energy when the armature plate 10 is attracted to the rotor 6 is reduced, and the attracting sound can be reduced.

【0015】[0015]

【表1】 [Table 1]

【0016】(他の実施例)上述の実施例においては、
アマチュア摩擦面とロータ摩擦面のスキマを不均一にす
ることにより、これらの接合時間を長期化させ、吸着音
を低減しているが、該スキマを不均一にする代わりに、
各ゴムダンパー18の形状や材質をそれぞれ異なるもの
とし、その弾性力に変化をつけても、上記実施例と同様
に吸着音を低減することが可能である。これは、アマチ
ュア板10はゴムダンパー18の弾性力に抗してロータ
6に吸引されるので、各ゴムダンパー18の弾性力が異
なれば、弾性力の弱いダンパー付近から吸引、接合が始
まり、弾性力の強いダンパー付近が最後に接合し、接合
時間を長引かせることができるからである。
(Other Embodiments) In the above embodiment,
By making the gap between the amateur friction surface and the rotor friction surface non-uniform, the joining time of these is prolonged and the suction sound is reduced, but instead of making the gap non-uniform,
Even if the shapes and materials of the rubber dampers 18 are different from each other and the elastic force is changed, the suction noise can be reduced as in the above-described embodiment. This is because the armature plate 10 is attracted to the rotor 6 against the elastic force of the rubber damper 18, and if the elastic force of each rubber damper 18 is different, the suction and joining start from the vicinity of the damper having a weak elastic force, and the elasticity is reduced. This is because the vicinity of the strong damper is finally joined, and the joining time can be prolonged.

【0017】なお、上記はゴムダンパーの場合について
の実施例であるが、板バネで構成されたアマチュアにお
いても同様の手段で同等の効果が期待できる。
Although the above is an example of the case of a rubber damper, the same effect can be expected by an armature made of a leaf spring by the same means.

【0018】[0018]

【発明の効果】上記実施例から明らかなように、本発明
は、アマチュア摩擦面とロータ摩擦面とのスキマを意図
的に不均一に設定するというもので、この構成によれ
ば、アマチュア板がロータに吸着する際の衝突接合時間
を長期化させ、衝突エネルギーを緩和し、吸着音を低減
させるという効果を奏する。
As is apparent from the above embodiment, the present invention intentionally sets the gap between the armature friction surface and the rotor friction surface to be non-uniform. This has the effect of lengthening the collision joining time when adsorbing to the rotor, reducing the collision energy, and reducing the adsorption noise.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施例の電磁クラッチの平面図FIG. 1 is a plan view of an electromagnetic clutch according to one embodiment of the present invention.

【図2】本発明の一実施例の電磁クラッチの縦断面図FIG. 2 is a longitudinal sectional view of an electromagnetic clutch according to one embodiment of the present invention.

【図3】従来例の電磁クラッチの縦断面図FIG. 3 is a longitudinal sectional view of a conventional electromagnetic clutch.

【符号の説明】[Explanation of symbols]

1 励磁コイル 2 継鉄部材 3 樹脂材 4 フランジ 5 フロントプレート 6 ロータ 7 ベアリング 8 ロータ摩擦面 9 アマチュア 10 アマチュア板 11 アマチュア摩擦面 13 圧縮機主軸 15 ボルト 16 ダンパーケース 17 リベット 18 ゴムダンパー 19 ストッパープレート 20 摩擦材 REFERENCE SIGNS LIST 1 excitation coil 2 yoke member 3 resin material 4 flange 5 front plate 6 rotor 7 bearing 8 rotor friction surface 9 amateur 10 amateur plate 11 amateur friction surface 13 compressor main shaft 15 bolt 16 damper case 17 rivet 18 rubber damper 19 stopper plate 20 Friction material

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ベルトを介してエンジンより回転駆動さ
れるロータと、このロータ同軸上に配設されるように弾
性体を介して圧縮機の主軸に固定されるとともに軸方向
に可動するアマチュア板を有するアマチュアと、前記ロ
ータとアマチュア板を摩擦接合させるための電磁力を発
生させる励磁コイルとを具備し、前記アマチュア摩擦面
とロータ摩擦面とのスキマが0.2mm以上不均一であ
ることを特徴とする電磁クラッチ。
1. A rotor rotatably driven by an engine via a belt, and an arm plate fixed to a main shaft of a compressor via an elastic body and axially movable so as to be disposed coaxially with the rotor. And an exciting coil that generates an electromagnetic force for frictionally joining the rotor and the armature plate, wherein the gap between the armature friction surface and the rotor friction surface is not uniform by 0.2 mm or more. Characteristic electromagnetic clutch.
【請求項2】 ベルトを介してエンジンより回転駆動さ
れるロータと、このロータ同軸上に配設されるように弾
性体を介して圧縮機の主軸に固定されるとともに軸方向
に可動するアマチュア板を有するアマチュアと、前記ロ
ータとアマチュア板を摩擦接合させるための電磁力を発
生させる励磁コイルとを具備し、前記弾性体の弾性力が
不均一であることを特徴とする電磁クラッチ。
A rotor rotatably driven by an engine via a belt; and an armature fixed to a main shaft of a compressor via an elastic body and axially movable so as to be disposed coaxially with the rotor. And an excitation coil for generating an electromagnetic force for frictionally joining the rotor and the armature plate, wherein the elastic body has an uneven elastic force.
【請求項3】 ベルトを介してエンジンより回転駆動さ
れるロータと、このロータ同軸上に配設されるように弾
性体を介して圧縮機の主軸に固定されるとともに軸方向
に可動するアマチュア板を有するアマチュアと、前記ロ
ータとアマチュア板を摩擦接合させるための電磁力を発
生させる励磁コイルとを具備し、前記ロータとアマチュ
ア板との接合時間を意図的に長期化させる接合時間長期
化手段を備えることを特徴とする電磁クラッチ。
3. A rotor rotatably driven by an engine via a belt, and an armature plate fixed on a main shaft of a compressor via an elastic body so as to be disposed coaxially with the rotor and movable in the axial direction. And an exciting coil for generating an electromagnetic force for frictionally joining the rotor and the armature plate, and a joining time extending means for intentionally extending the joining time between the rotor and the armature plate. An electromagnetic clutch, comprising:
JP10006670A 1998-01-16 1998-01-16 Electromagnetic clutch Pending JPH11201192A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10006670A JPH11201192A (en) 1998-01-16 1998-01-16 Electromagnetic clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10006670A JPH11201192A (en) 1998-01-16 1998-01-16 Electromagnetic clutch

Publications (1)

Publication Number Publication Date
JPH11201192A true JPH11201192A (en) 1999-07-27

Family

ID=11644821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10006670A Pending JPH11201192A (en) 1998-01-16 1998-01-16 Electromagnetic clutch

Country Status (1)

Country Link
JP (1) JPH11201192A (en)

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