WO2012147400A1 - 電磁連結装置 - Google Patents
電磁連結装置 Download PDFInfo
- Publication number
- WO2012147400A1 WO2012147400A1 PCT/JP2012/054351 JP2012054351W WO2012147400A1 WO 2012147400 A1 WO2012147400 A1 WO 2012147400A1 JP 2012054351 W JP2012054351 W JP 2012054351W WO 2012147400 A1 WO2012147400 A1 WO 2012147400A1
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- WIPO (PCT)
- Prior art keywords
- terminal
- winding
- electromagnetic coil
- coupling device
- electromagnetic
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/10—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings
- F16D27/108—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members
- F16D27/112—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D27/14—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D2027/001—Means for electric connection of the coils of the electromagnetic clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D27/00—Magnetically- or electrically- actuated clutches; Control or electric circuits therefor
- F16D2027/005—Details relating to the internal construction of coils or to clutches having more than one coil in the same housing
Definitions
- the present invention relates to an electromagnetic coupling device including an electromagnet including an annular yoke in which an electromagnetic coil is installed and an insulating terminal case fixed to the yoke, and more particularly, connection between the electromagnetic coil and a terminal member. Concerning structure.
- Patent Document 1 Conventionally, as a connection structure in an electromagnetic coupling device, for example, there is one disclosed in Patent Document 1.
- the electromagnetic coupling device disclosed in Patent Document 1 both ends of a winding of an electromagnetic coil led into a terminal case are bent into a groove formed in the terminal case, and a lead wire is provided to the groove intersecting the groove.
- both ends of the winding of the electromagnetic coil are fitted into the slit formed in the terminal member, and the terminal member (lead wire) and both ends of the winding of the electromagnetic coil are connected.
- the present invention stably maintains the conduction in the terminal member against the temperature change while using a metal material different from the material of the terminal member as the material of the electromagnetic coil in the connection structure by press-fitting the terminal member.
- An object of the present invention is to provide an electromagnetic coupling device.
- an electromagnetic coupling device is an electromagnetic coupling device including an electromagnet including an annular yoke in which an electromagnetic coil is installed and an insulating terminal case fixed to the yoke. Because The terminal case includes a first groove portion that is bent and fitted in both ends of the winding of the electromagnetic coil led into the terminal case, and a second groove portion that intersects the first groove portion. While is formed The terminal member has a pair of terminal members fitted into the second groove portion, and a lead wire connected to the end portion of the winding is connected to the terminal member, and the terminal member crosses the second groove portion.
- the material constituting the winding of the electromagnetic coil and the material constituting the connecting piece are different metal materials, and the same kind of metal as the material constituting the connecting piece at each of both ends of the winding of the electromagnetic coil A terminal wiring made of a material was connected, the terminal wiring was fitted into the first groove, and the terminal wiring was fitted into the slit.
- terminal wiring is connected to both ends of the winding of the electromagnetic coil, the terminal wiring is fitted into the slit of the connection piece, and the lead wire connected to the terminal member is electrically connected to the winding of the electromagnetic coil.
- the terminal wiring fitted into the slit of the connection piece and the connection piece are made of the same kind of metal material, while the winding of the electromagnetic coil is the metal material constituting the terminal wiring and the connection piece. Consists of dissimilar metal materials.
- the electromagnetic coupling device of the present invention since the terminal wiring and the connection piece are made of the same metal material, the coefficients of thermal expansion are close to each other, and the length and volume change similarly with respect to temperature changes. From this, it is possible to prevent the slit from being expanded or a gap between the terminal wiring and the connection piece with temperature change, and the connection between the terminal wiring (winding of the electromagnetic coil) and the connection piece (lead wire). Conductivity can be stably maintained.
- the winding of the electromagnetic coil can be made of a metal material different from the material constituting the connection piece and the terminal wiring, for example, by using a lightweight metal material such as an aluminum material, the weight of the electromagnetic coupling device can be reduced. Can be achieved.
- FIG. 6 is an exploded perspective view showing the connector and the lid shown in FIG. 5.
- FIG. 5 It is the schematic which shows the wiring structure in embodiment of this invention. It is a figure which shows the coil bobbin to which the wiring structure of FIG. 8 is applied, (A) is a front view, (B) is sectional drawing.
- FIG. 1 is a cross-sectional view showing an electromagnetic coupling device (electromagnetic clutch) according to an embodiment.
- This electromagnetic coupling device is a refrigeration compressor that constitutes a cooling device for an automobile, and power from a power source to a drive shaft of the compressor. It is a device that controls the transmission.
- the electromagnetic coupling device 100 includes a yoke 3 fixed via a mounting plate 1 to a compressor housing (not shown).
- An electromagnetic coil 5 is provided in the annular groove 3 a of the yoke 3.
- a rotor 600 having an annular groove 106a is supported on the cylindrical portion 500 of the compressor housing via a bearing 700 so as to be rotatable and restricted in movement in the axial direction, and the yoke 3 is idled in the annular groove 106a. It is fitted.
- a flanged cylindrical hub 109 is fixed with a bolt 210 at the tip of the drive shaft 800 of the compressor that penetrates the cylinder 500.
- an armature 112 formed in a ring plate shape is attached with the friction surface 112a facing the friction surface 106b of the rotor 600.
- the pulley 115 is connected to a pulley provided on the crankshaft of the automobile engine via a belt, and is configured to rotate with the rotor 600 by the rotation of the engine.
- the connector 11 and the yoke 3 constitute an electromagnet 170, and the electromagnetic coil 5 is connected to an external electric circuit via the connector 11.
- a plug connector 41 for supplying power to the electromagnet 170 is connected to the ends of the two lead wires (aluminum wires) 18 a and 18 b led out from the connector 11.
- On / off of energization to the electromagnetic coil 5 via the plug connector 41 is controlled by a drive circuit (not shown).
- the armature 112 is magnetically attracted to the rotor 600, and the rotation of the rotor 600 is driven to drive shaft.
- 800 is configured to transmit to 800.
- the yoke 3 includes an electromagnetic coil 5 and a cylindrical ring body 6 that accommodates the electromagnetic coil 5.
- the ring body 6 includes a first ring portion 6a, a second ring portion 6b coaxially arranged on the outside with a predetermined interval from the first ring portion 6a, and first and second ring portions 6a, 6b and a bottomed portion 6c connecting the one end to the other.
- the bottomed portion 6c and the mounting plate 1 are formed with through-holes 7 through which both ends 5a and 5b of the winding of the electromagnetic coil 5 are directly passed and led out of the bottomed portion 6c.
- the electromagnetic coil 5 is fitted into the ring body 6, and then the electromagnetic coil 5 is fixed to the ring body 6 with a resin material.
- the connector 11 is caulked and fixed above the through hole 7 formed in the mounting plate 1 by, for example, a claw or the like formed in the through hole 7 portion of the mounting plate 1.
- the connector 11 includes an insulating terminal case 13 whose upper surface is open, winding ends 5 a and 5 b inserted into the terminal case 13, a diode 15, It has two conductive (brass) terminal members 19a and 19b connected to one end of two lead wires 18a and 18b.
- a plug connector 41 for supplying power to the windings is connected to the other ends of the two lead wires 18a and 18b.
- a pair of case holes 23 are formed on the bottom of the terminal case 13 at positions left and right relative to a virtual straight line including the center of the ring body 6, and the pair of case holes 23 have both ends 5 a and 5 b of the winding. Are inserted respectively.
- the terminal case 13 there are grooves into which the winding ends 5a and 5b are fitted, respectively, and a pair extending from the pair of case holes 23 in the left-right direction with respect to a virtual straight line including the center of the ring body 6 respectively.
- the ends 5a and 5b of the winding are bent and fitted in the first groove 25 so as to be separated from each other, and the lead portions 15a and 15b on both sides of the diode 15 are separated from each other in the third groove 27. Fit in the direction. That is, the end portions 5a and 5b of the winding and the lead portions 15a and 15b of the diode 15 are fitted into the terminal case 13 so as to be parallel to each other.
- a pair of second groove portions 28 are formed in the terminal case 11 in a direction intersecting with the first and third groove portions 25 and 27 and in parallel with a virtual straight line including the center of the ring body interposed therebetween.
- the lead portions 15a and 15b of the diode 15 fitted in parallel with each other and the intermediate portions of the winding end portions 5a and 5b cross.
- the intermediate portions of the lead portions 15a and 15b and the winding ends 5a and 5b are formed by press-fitting a pair of terminal members 19a and 19b into the second groove portion 28 from above. Connected to lines 18a and 18b.
- the pair of terminal members 19a and 19b are integrally formed with cylindrical holding portions 30a and 30b and holding portions 30a and 30b that hold the covering portions of the lead wires 18a and 18b that are covered with insulation, and have a cross section. It consists of connection pieces 29a and 29b formed in a U-shape. The connection pieces 29a and 29b are provided such that the bottoms of the U-shaped cross section extend on the extended lines of the lead wires 18a and 18b, and the side walls that are substantially parallel to each other in the U-shaped cross section are provided on the side walls. A pair of slits 19c that open toward the open side of the U-shaped cross section and extend toward the bottom of the U-shaped cross section are formed before and after the lead wires 18a, 18b in the extending direction. .
- the slits 19c (first slit) formed on the tip side are fitted with the ends 5a, 5b of the windings fitted in the first groove 25, and the holding parts 30a, 30b side.
- the positional relationship between the first groove portion 25 and the third groove portion 27 so that the lead portions 15a and 15b of the diode 15 fitted in the third groove portion 27 are fitted in the slit 19c (second slit) of A pair of slits 19c is formed according to the above.
- the open ends of the U-shaped cross sections of the connection pieces 29 a and 29 b are press-fitted so as to face the bottom of the terminal case 11.
- intermediate portions of the lead portions 15a and 15b and the winding end portions 5a and 5b are press-fitted into the pair of slits 19c of the terminal members 19a and 19b and are electrically connected.
- the press-fitting operation of fitting the terminal members 19a and 19b into the second groove portion 28 allows the windings of the diode 15 and the electromagnetic coil 5 to be connected to the lead wires 18a and 18b, thereby facilitating the connection work.
- FIG. 6 after the lead portions 15a and 15b and the intermediate portions of the winding ends 5a and 5b are connected to each other by press-fitting the terminal members 19a and 19b into the second groove 28, these connections are made.
- the portion waterproof as shown in FIG. 7, the inside of the terminal case 11 is bonded (sealed) with a resin material 40, and the opening of the terminal case 11 is covered with a lid 42 while the resin material 40 is uncured. Block.
- the winding of the electromagnetic coil 5 is made of an aluminum wire, and terminal wiring 51a made of enameled copper wire (a conductive wire in which the copper wire is covered with enamel) is formed at both ends of the aluminum winding. 51b is connected, and the end portions of the terminal wirings 51a and 51b are introduced into the terminal case 11 from the case hole 23 as the end portions 5a and 5b of the windings, and are fitted into the first groove portion 25 to be connected to the terminal members 19a and 19b. Is inserted into the second groove 28 so that the terminal wires 51a and 51b are fitted into the slits 19c of the connection pieces 29a and 29b.
- the aluminum winding of the electromagnetic coil 5 is connected to the lead wires 18a and 18b via the terminal wirings 51a and 51b made of enameled copper wire.
- the connection pieces 29a and 29b and the terminal wiring 51a are connected in the terminal members 19a and 19b.
- the connection pieces 29a and 29b and the terminal wiring 51a are connected.
- 51b are in contact with each other and are made conductive.
- the enamel coating of the enameled copper wire constituting the terminal wiring 51a, 51b is peeled off by the slit 19c when fitted into the slit 19c, so that the internal copper wire and the connection pieces 29a, 29b are brought into contact with each other to be conducted. It has become.
- FIG. 9 shows a bobbin 52 to which the wiring structure shown in FIG. 8 is applied.
- the bobbin 52 shown in FIG. 9 includes a cylindrical portion 52b and flange portions 52a connected to both end surfaces in the central axis direction of the cylindrical portion 52b, and is formed by the flange portion 52a and the cylindrical portion 52b.
- the aluminum winding of the electromagnetic coil 5 is accommodated in the annular groove 52c.
- the terminal wiring 51a is the winding start side, and the other end of the terminal wiring 51a (enamelled copper wire) held at one end by the terminal case 11 is led out from the cylindrical portion 52b to the outside of the flange 52a.
- one end (winding start side) of the winding of the electromagnetic coil 5 made of aluminum wire is connected by caulking of the coil terminal 53a.
- the winding (aluminum wire) of the electromagnetic coil 5 connected to the terminal wiring 51a is positioned clockwise by the positioning portion 52c formed on the flange 52a and extends clockwise in FIG. 9 along the outside of the flange 52a. Then, it is returned to the cylindrical portion 52b through the notch 52d provided in the flange 52a, and is wound clockwise around the cylindrical portion 52b.
- the winding end of the winding (aluminum wire) of the electromagnetic coil 5 is led out from the cylindrical portion 52b to the outside of the flange 52a, and a coil terminal is connected to the end of the winding end (aluminum wire) of the electromagnetic coil 5 on the winding end side.
- One end of the thermal fuse 55 is connected by caulking 53b, and one end of the terminal wiring 51b is connected to the other end of the thermal fuse 55 by caulking of the coil terminal 53c.
- the winding end of the winding (aluminum wire) of the electromagnetic coil 5, the thermal fuse 55, and the terminal wiring 51b are positioned by the positioning portion 52c formed on the flange 52a, and extend clockwise in FIG. 9 along the outside of the flange 52a.
- the other end of the terminal wiring 51 b is led into the terminal case 11 through the outer periphery of the electromagnetic coil 5.
- the winding of the electromagnetic coil 5, the temperature fuse 55, and the terminal wirings 51a and 51b extending along the outer surface of the flange 52a are sealed with resin together with the coil terminals 53a to 53c. By sealing with the resin, water can be prevented from entering the winding (aluminum wire) of the electromagnetic coil 5 to generate rust.
- one end of the terminal wiring 51 b can be connected to the end of winding of the winding (aluminum wire) of the electromagnetic coil 5 without interposing the temperature fuse 55, and the other end of the terminal wiring 51 b can be guided into the terminal case 11. .
- the terminal wires 51a and 51b made of enameled copper wire are connected to both ends of the winding of the electromagnetic coil 5 made of aluminum wire, and the terminal wires 51a and 51b are led into the terminal case 11 from the case hole 23. Are connected to the connection pieces 29a and 29b.
- the terminal wirings 51a and 51b are made of enameled copper wires
- the connection pieces 29a and 29b connected to the terminal wirings 51a and 51b are made of brass. That is, the terminal wires 51a and 51b and the connection pieces 29a and 29b are made of the same metal material (copper material), whereas the winding of the electromagnetic coil 5 is composed of the terminal wires 51a and 51b and the connection pieces. 29a and 29b are made of a material different from the metal material (aluminum-based material). Since aluminum constituting the winding of the electromagnetic coil 5 is lighter than copper, the electromagnetic coupling device can be reduced in weight by pulling the electromagnetic coil 5 (electromagnet).
- the winding of the electromagnetic coil 5 which is an aluminum wire and the connection pieces 29a, 29b made of brass are brought into contact with each other, different metals having different coefficients of thermal expansion are brought into contact with each other.
- the slit 19c is expanded or a gap is formed between the slit 19c and the aluminum wire, so that the aluminum wire (the winding of the electromagnetic coil 5) and the brass connection piece 29a, 29b (terminal members 19a and 19b) may be disconnected.
- terminal wirings 51a and 51b that are enameled copper wires are connected to both ends of the winding of the electromagnetic coil 5 that is an aluminum wire, and the terminal wirings 51a and 51b are connected to brass. If the pieces 29a and 29b are connected, the terminal wirings 51a and 51b and the connecting pieces 29a and 29b are made of the same metal material and have a close thermal expansion coefficient. Or a gap between the slit 19c and the terminal wires 51a and 51b can be suppressed, and the conduction between the winding of the electromagnetic coil 5 and the lead wires 18a and 18b can be stably maintained. . In addition, by pressing the terminal members 19a and 19b into the second groove 28, the winding of the electromagnetic coil 5 and the lead wires 18a and 18b can be conducted, so that the connection structure is simple and inexpensive, and Wiring work can be done easily.
- connection pieces 29a and 29b are made of brass having excellent spreadability, so that the connection pieces 29a and 29b can be easily processed. Also, the connection pieces 29a and 29b are made of the same metal material as the brass constituting the connection pieces 29a and 29b.
- the terminal wirings 51a and 51b are configured with copper having excellent electrical conductivity, excellent electrical conductivity can be secured between the connection pieces 29a and 29b.
- the terminal wiring 51b is connected to one end of the winding of the electromagnetic coil 5 via the thermal fuse 55, the thermal fuse 55 is blown by heat generated by slipping of the clutch friction surface due to the seizure of the compressor. The energization of the electromagnetic coil 5 is cut off, and the protection of the vehicle belt can be achieved.
- the structure of the electromagnetic coupling device is not limited to that shown in FIG. 1, and the known electromagnetic coupling device using an electromagnet is combined with the wiring structure of the present invention, the winding of the electromagnetic coil 5 and the terminal wiring at both ends thereof. It is possible to apply a wiring structure composed of 51a and 51b.
- the electromagnetic coil 5 and the lead wires 18a and 18b are made of aluminum, the connection pieces 29a and 29b are made of brass, and the terminal wirings 51a and 51b are made of copper.
- the combination is limited to these metal materials.
- the material of the electromagnetic coil 5 and the material of the connection pieces 29a and 29b are different metal materials, and the material of the connection pieces 29a and 29b and the material of the terminal wirings 51a and 51b Any metal material of the same kind may be used.
- the winding of the electromagnetic coil 5 can be made of an aluminum alloy, and the terminal wirings 51a and 51b formed of a copper alloy can be combined with the connection pieces 29a and 29b made of brass.
- connection pieces 29a and 29b may be formed by plating the same kind of metal as the metal material constituting the terminal wirings 51a and 51b.
- the material for covering and insulating the terminal wirings 51a and 51b may be polyurethane or vinyl in addition to enamel.
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Abstract
Description
特許文献1に開示される電磁連結装置は、端子ケース内に導いた電磁コイルの巻線の両端を、端子ケース内に形成した溝内に折り曲げ、前記溝に交差する溝に対してリード線を接続した端子部材を押し込むことで、前記端子部材に形成したスリットに電磁コイルの巻線の両端を嵌め込み、端子部材(リード線)と電磁コイルの巻線の両端とを結線する。
しかし、電磁連結装置の軽量化を図るために、電磁コイルの巻線を、例えば銅線からアルミニウム線に変更した場合、端子部材の材料である黄銅よりもアルミニウムの熱膨張率が高いため、温度上昇したときには、アルミニウム巻線が膨張することで端子部材のスリットを拡張し、逆に、温度低下すると、アルミニウム巻線が収縮することで、端子部材のスリットと巻線との間に隙間が生じ、電磁コイルの巻線と端子部材との間での導通が断たれる可能性があった。
前記端子ケースは、前記端子ケース内部に導いた前記電磁コイルの巻線の両端部それぞれを互い離れる向きに曲げて嵌め込む第1の溝部と、前記第1の溝部に交差する第2の溝部とが形成される一方、
前記第2の溝部に嵌め込まれる一対の端子部材を有し、前記端子部材には前記巻線の端部に導通させるリード線が接続されると共に、前記端子部材は、前記第2の溝部を横断する前記巻線の端部それぞれを嵌め込むスリットが形成された接続片を有し、
前記電磁コイルの巻線を構成する材料と前記接続片を構成する材料とが異種の金属材料であり、前記電磁コイルの巻線の両端部それぞれに、前記接続片を構成する材料と同種の金属材料で構成した端子配線を接続し、前記端子配線を前記第1の溝部に嵌め込み、さらに前記スリットに前記端子配線を嵌め込むようにした。
図1は、実施形態における電磁連結装置(電磁クラッチ)を示す断面図であり、この電磁連結装置は、自動車用冷房装置を構成する冷媒圧縮機において、動力源から圧縮機の駆動軸への動力の伝達を制御する装置である。
ヨーク3の環状溝3aには、電磁コイル5が内設される。圧縮機ハウジングの円筒部500には、環状溝106aを有するロータ600が、軸受700を介して回転自在にかつ軸方向への移動を規制されて支持され、環状溝106aには、ヨーク3が遊嵌されている。
ハブの鍔109aに装着した板バネ111には、全体を輪板状に形成されたアーマチュア112が、摩擦面112aをロータ600の摩擦面106bに対向させて装着されている。
プーリ115は、自動車エンジンのクランク軸上に設けられたプーリとベルトを介して連結されており、エンジンの回転によってロータ600と共に回転するように構成されている。
プラグコネクタ41を介する電磁コイル5への通電のオン/オフが図示しない駆動回路によって制御され、電磁コイル5に通電することで、アーマチュア112がロータ600に磁気吸着され、ロータ600の回転が駆動軸800に伝達するように構成されている。
リング体6は、第1のリング部6aと、この第1のリング部6aと所定間隔をもって外側に同軸に配されている第2のリング部6bと、第1及び第2のリング部6a,6bを一側端で相互に接続している有底部6cとを有している。
図4に示すように、取付板1に形成された貫通孔7上方には、コネクタ11が、例えば、取付板1の貫通孔7部に形成された爪等により、カシメ固定されている。
端子ケース13の底部には、リング体6の中心を含む仮想直線に対して左右対象な位置に一対のケース孔23が形成され、一対のケース孔23には、巻線の両端部5a,5bがそれぞれ挿通される。
リード部15a,15b及び巻線の端部5a,5bの中間部分は、図5に示すように、上方から一対の端子部材19a,19bを第2の溝部28に圧入して嵌め込むことによってリード線18a,18bに対して接続される。
接続片29a,29bは、U字状をなす断面の底部が、リード線18a,18bの延長線上に延びるようにして設けられ、U字状をなす断面において相互に略平行に対向する側壁には、U字状断面の開放側に向けて開放し、U字状をなす断面の底部に向けて延設される一対のスリット19cが、リード線18a,18bの延長方向の前後に形成されている。
一対の端子部材19a,19bを第2の溝部28に嵌め込む場合には、接続片29a,29bのU字状をなす断面の開放端が、端子ケース11の底部に向かうようにして圧入することで、端子部材19a,19bの一対のスリット19cには、図6に示すように、リード部15a,15b及び巻線の端部5a,5bの中間部分が圧入されて電気的に接続される。
図6に示したように、端子部材19a,19bの第2の溝部28への圧入によってリード部15a,15b及び巻線の端部5a,5bの中間部分を相互に接続した後に、これらの接続部分を防水構造とするために、図7に示すように、端子ケース11内を樹脂材40によってボンディング(封止)し、樹脂材40が未硬化の状態で端子ケース11の開口を蓋42によって閉塞する。
即ち、電磁コイル5のアルミニウム巻線は、エナメル銅線からなる端子配線51a、51bを介してリード線18a,18bに接続され、端子部材19a,19bにおいては、接続片29a,29bと端子配線51a、51bとが接して導通するようにしてある。
尚、端子配線51a,51bを構成するエナメル銅線のエナメル被覆は、スリット19cに嵌め込まれるときに、スリット19cによって剥がれ、内部の銅線と接続片29a,29bとが接触して導通するようになっている。
図9に示すボビン52は、筒状部52bと、該筒状部52bの中心軸方向の両端面にそれぞれ連設されたフランジ部52aとからなり、フランジ部52aと筒状部52bとで形成される環状溝52c内に、電磁コイル5のアルミニウム巻線が収容される。
図9において端子配線51aは巻き始め側であり、端子ケース11に一端が保持される端子配線51a(エナメル銅線)の他端を、筒状部52bからフランジ52aの外側に導出し、ここで、アルミニウム線で構成される電磁コイル5の巻線の一端(巻き始め側)にコイル端子53aのカシメによって接続させてある。
また、電磁コイル5の巻線(アルミニウム線)の巻き終わりを、筒状部52bからフランジ52aの外側に導出し、電磁コイル5の巻線(アルミニウム線)の巻き終わり側の端部にコイル端子53bのカシメによって温度ヒューズ55の一端を接続し、更に、温度ヒューズ55の他端にコイル端子53cのカシメによって端子配線51bの一端を接続してある。
尚、フランジ52aの外面に沿って延設される電磁コイル5の巻線、温度ヒューズ55及び端子配線51a、51bは、コイル端子53a~53cと共に樹脂によって封止する。係る樹脂による封止によって、電磁コイル5の巻線(アルミニウム線)に水が浸入して錆を発生させることを抑制できる。
上記のように、アルミニウム線からなる電磁コイル5の巻線の両端に、エナメル銅線からなる端子配線51a、51bを接続し、この端子配線51a、51bをケース孔23から端子ケース11内に導いて接続片29a,29bに接続させる。
電磁コイル5の巻線を構成するアルミニウムは、銅よりも軽量であるから、電磁コイル5(電磁石)引いては電磁連結装置を軽量化できる。
しかも、端子部材19a,19bを第2の溝部28に圧入することで、電磁コイル5の巻線とリード線18a,18bとを導通させることができるので、結線構造が簡易かつ安価で、かつ、結線作業を容易に行える。
また、電磁コイル5の巻線の一方端部に、温度ヒューズ55を介して端子配線51bを接続すれば、圧縮機の焼き付きに伴うクラッチ摩擦面のすべりによる発熱で温度ヒューズ55が溶断することで、電磁コイル5への通電が遮断され、車両側のベルトの保護が達成できる。
例えば、電磁連結装置の構造は、図1に示したものに限定されず、電磁石を用いる公知の電磁連結装置に、本発明の結線構造、及び、電磁コイル5の巻線及びその両端の端子配線51a,51bからなる配線構造を適用することが可能である。
また、接続片29a,29bは、端子配線51a,51bを構成する金属材料と同種の金属を鍍金したものであってもよい。
更に、端子配線51a,51bを被覆して絶縁させるための材料は、エナメルの他、ポリウレタンやビニールなどあってもよい。
Claims (4)
- 電磁コイルが内設された環状のヨークと、前記ヨークに固定された絶縁性の端子ケースとからなる電磁石を備えた電磁連結装置であって、
前記端子ケースは、前記端子ケース内部に導いた前記電磁コイルの巻線の両端部それぞれを互い離れる向きに曲げて嵌め込む第1の溝部と、前記第1の溝部に交差する第2の溝部とが形成される一方、
前記第2の溝部に嵌め込まれる一対の端子部材を有し、前記端子部材には前記巻線の端部に導通させるリード線が接続されると共に、前記端子部材は、前記第2の溝部を横断する前記巻線の端部それぞれを嵌め込むスリットが形成された接続片を有し、
前記電磁コイルの巻線を構成する材料と前記接続片を構成する材料とが異種の金属材料であり、前記電磁コイルの巻線の両端部それぞれに、前記接続片を構成する材料と同種の金属材料で構成した端子配線を接続し、前記端子配線を前記第1の溝部に嵌め込み、さらに前記スリットに前記端子配線を嵌め込むことを特徴とする電磁連結装置。 - 前記電磁コイルの巻線がアルミニウム系材料で構成され、前記接続片及び端子配線が共に銅系材料で構成されることを特徴とする請求項1記載の電磁連結装置。
- 前記接続片が黄銅で構成され、前記端子配線が銅線で構成されることを特徴とする請求項2記載の電磁連結装置。
- 前記電磁コイルの巻線の一方端部に、ヒューズを介して前記端子配線を接続することを特徴とする請求項1記載の電磁連結装置。
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US14/114,475 US9515534B2 (en) | 2011-04-28 | 2012-02-23 | Electromagnetic coupling device having electromagnetic coil with ends formed by terminal lines of different metal material |
CN201280020490.0A CN103492745B (zh) | 2011-04-28 | 2012-02-23 | 电磁耦合装置 |
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CN104315032A (zh) * | 2014-08-19 | 2015-01-28 | 上海金山易通汽车离合器有限公司 | 一种新型汽车空调离合器线圈环部件及制作方法 |
JP7077639B2 (ja) * | 2018-02-01 | 2022-05-31 | 株式会社デンソー | 電磁クラッチおよびその製造方法 |
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