JP3214658B2 - Electromagnetic coupling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excitation device incorporated in an electromagnetic coupling device such as an electromagnetic clutch or an electromagnetic brake.

[0002]

2. Description of the Related Art An exciter of an electromagnetic coupling device includes a coil bobbin having a coil wound on a coil bobbin while a winding start end and a winding end are pulled out from a pair of outlets formed in a terminal receiving portion of the coil bobbin. Inserted into the storage section. A portion of the electromagnetic coil protruding from the coil housing portion is covered with a coil cover. These electromagnetic coils and coil bobbins are inserted into the annular groove of the yoke while inserting the terminal housing portion of the coil bobbin into the through hole formed in the side plate of the yoke, and are secured by the caulking piece at the opening end of the yoke and fixed. Have been. Further, the tapered opening end of the coil cover bites into the opening end of the similarly tapered coil bobbin when the caulking piece is processed, so that the electromagnetic coil is hermetically sealed by the coil bobbin and the coil cover and is insulated from the outside.

[0003] Both ends of the electromagnetic coil drawn into the terminal storage portion of the coil bobbin are bent on the upper surface of the coil support portion in the terminal storage portion, and elastic pieces press-fit into grooves formed around the coil support portion. Are individually held by the terminals. Then, the supporting piece and the terminal are electrically connected by inserting the projecting piece of the supporting piece fixed to the end of the lead wire into the terminal by elastically deforming the elastic piece. The support fitting is supported by a fitting storage member fitted and fixed to the terminal storage portion of the coil bobbin protruding outward from the side plate of the yoke, and the terminal covers fitted to the fitting storage member are used to support both ends of the electromagnetic coil. The electrical connection between the terminal and the terminal and the electrical connection between the terminal and the support bracket are sealed and insulated.

On the other hand, in the excitation device having such a structure, a diode as a surge voltage absorbing element is incorporated, and the diode is provided on the upper surface of the partition wall (diode table) of the metal fitting storage member fitted to the terminal storage part of the coil bobbin. And a pair of lead wires of the diode is individually fixed to a supporting bracket together with ends of a pair of lead wires connected to the power supply side (Japanese Patent Laid-Open No. 4-125321,
See JP-A-4-125322).

[0005]

An exciting device incorporated in a conventional electromagnetic coupling device is configured such that each end of an electromagnetic coil drawn out from a coil housing portion of a coil bobbin through an outlet and into a terminal housing portion is connected to a yoke circle. By being bent in the circumferential direction, it was held on the upper surface of each coil support in the terminal housing.
Also, a wall of the terminal housing of the coil bobbin is interposed between the cut portion at each end of the electromagnetic coil and the inner surface of the through hole of the yoke, and the wall portion is used to provide insulation measures for the cut portion of the electromagnetic coil. (See JP-A-4-125321). With such a structure, the shape of the terminal storage portion of the coil bobbin is increased, and the shape of the metal fitting storage member fitted to the terminal storage portion and the shape of the terminal cover fitted to the metal fitting storage member are also increased. There was a problem that it would.

Further, in the conventional electromagnetic coupling device, a lead wire drawn out of a fitting housing member is bent from the fitting housing member and held in a housing (for example, a housing of a compressor for a car air conditioner) in which an excitation device is mounted. Accordingly, the lead wire is assembled so that the flange portion of the belt hook portion formed on the rotor into which the exciting device is inserted does not come into contact with the lead wire. However, in the electromagnetic coupling device having a structure in which the flange portion of the belt hook portion protrudes from the side plate of the yoke, the gap between the side plate of the yoke and the holding portion of the lead wire of the metal fitting storage member must be provided large, and the coil bobbin is provided. There is a problem that the amount of protrusion of the terminal housing from the yoke increases. SUMMARY OF THE INVENTION It is an object of the present invention to improve the structure of an electrical connection portion between both ends of an electromagnetic coil and a lead wire to reduce the size of an electromagnetic coupling device.

[0007]

According to the present invention, there is provided an electromagnetic coupling device having an exciting device, wherein the exciting device includes a coil housing inserted into an annular groove of the yoke. A terminal housing is formed integrally with the coil bobbin inserted into a through hole formed in the side plate of the yoke, and the terminal housing is housed in the coil housing of the coil bobbin. Electromagnetic coils whose ends are individually drawn out, and a pair of terminals individually fixed to each coil supporting portion in the terminal storage portion in which the ends of the electromagnetic coil are held and connected to the ends,
An opening protruding from the side plate of the fitting housing and fitted to the tip of the terminal housing, and further protruding from this opening to the outside of the coil support in the terminal housing,
The yoke is press-fitted between the through-hole and the terminal storage portion.
Between the through-holes and the cut portions at both ends of the electromagnetic coil.
A fitting housing member integrally formed with a projected projection and an end portion of a lead wire, and a protruding piece housed in the fitting housing member and inserted into the opening is connected to the terminal. It is characterized by comprising a pair of support fittings and a terminal cover fitted to the fitting storage member and sealing the fitting storage portion.

According to a second aspect of the present invention, there is provided an exciting device, a rotor in which an annular groove into which the exciting device is inserted is formed, and one flange of a belt hooking portion projects from a side plate of a yoke of the exciting device. In an electromagnetic coupling device having an armature that is magnetically attracted, the exciter is configured such that a terminal storage portion is integrally formed with a coil storage portion inserted into an annular groove of the yoke, and the terminal storage portion is provided on a side plate of the yoke. A coil bobbin inserted into the formed through-hole, an electromagnetic coil housed in the coil housing of the coil bobbin, and an end individually drawn out from a pair of outlets in the terminal housing, and an end of the electromagnetic coil. A pair of terminals individually fixed to each coil support portion in the terminal storage portion to be held and connected to the end portion, and a pair of terminals protruding from a side plate of the metal storage portion and having the terminal storage portion. Opening is provided in which the end is fitted,
A protrusion is further integrally formed from the opening to the outside of the coil support portion in the terminal storage portion and inserted into the through hole of the yoke. A fitting storage member in which the holding portion of the lead wire facing the flange portion is integrally formed, and a protruding piece fixed to the end of the lead wire and stored in the fitting storage member and inserted into the opening. A pair of support fittings connected to the terminal, a lid fitted to the fitting storage member and sealing the fitting storage section, and a holding section superposed with the lead wire interposed between the holding section and the holding section are integrally formed. And a formed terminal cover.

[0009] Further, as claim 3, claims 1 and 2
In the electromagnetic coupling device of (1), a groove is formed between a pair of the coil support portions formed in the terminal storage portion of the coil bobbin, and the opening portion of the metal housing member is divided into two in the metal housing member. A partition for partitioning is formed, and the partition is inserted into the groove.

[0010] As claimed in claim 4, in the electromagnetic coupling device of claim 3, wherein the terminal cover, the holding piece which faces the partition wall end face of the fitting receiving member are integrally formed, the holding and the end surfaces of the partition wall A pair of lead wires of a surge absorbing element having a case part interposed between the end surfaces of the pieces are fixed individually to the pair of support brackets.

[0011]

The electromagnetic clutch mounted on the compressor for the car air conditioner of the electromagnetic coupling device rotates the rotor by the driving of the engine because the belt wrapped around the pulley on the engine side hangs on the belt hang portion of the rotor. If the electromagnetic coil of the excitation device is energized to be excited, the armature mounted on the rotating shaft of the compressor is magnetically attracted to the rotor, and the compressor is driven. When the power to the electromagnetic coil is cut off, the armature moves away from the rotor, and the compressor stops.

[0012]

1 to 16 show an embodiment of an electromagnetic coupling device according to the present invention. FIG. 1 is a rear view of the electromagnetic coupling device, FIG. 2 is a partially sectional side view, and FIG. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3, and FIG. 5 is a rear view of only the main part of the coil bobbin, in which the periphery of the terminal housing is enlarged, FIG. 5 is a sectional view taken along line BB of FIG. 5, FIG. 7 is a sectional view taken along line CC of FIG. 5, and FIG.
FIG. 9 is a front view of only the main part of the coil bobbin in which the periphery of the coil outlet is enlarged, FIG. 10 is a rear view of the metal housing, FIG. 11 is a front view of the metal housing, and FIG.
13 is a side view of the fitting housing member, FIG. 13 is a front view of the terminal cover, FIG. 14 is a sectional view taken along the line EE of FIG. 13, FIG. 15 is a plan view of the lead wire assembly, and FIG. 16 is a side view of FIG. Hereinafter, embodiments will be described with reference to these drawings.

The electromagnetic coupling device of the embodiment is an electromagnetic clutch 2 mounted on a compressor 1 for a car air conditioner. The rotating shaft 3 of the compressor 1 is supported by a shaft hole of the housing 1a with a bearing (not shown) and protrudes from a center hole of the oil seal 4. An armature assembly 5 is mounted on a shaft end of the rotating shaft 3. . The armature assembly 5 includes a hub 8 which is spline-fitted to the shaft end of the rotating shaft 3 and is prevented from coming off by a backing plate 6 and bolts 7, a stopper plate 9 integrally fixed to the hub 8 with rivets (not shown). A plurality of through-holes 10a are formed at the center, the center of which coincides with a plurality of through-holes 9a formed in the stopper plate 9, and a damper cover 10 welded to the stopper plate 9 is provided inside the damper cover 10. And a torque transmitting pin 11 is baked and fixed at each center.
2 and an armature 13 in which the tips of the torque transmission pins 11 inserted into the through holes 9a and 10a are integrally fixed by caulking. Reference numeral 13a
Is an arc-shaped slit formed in the armature 13.

Armature 13 of armature assembly 5
When a yoke 19 described later is not excited, a predetermined air gap G is formed and the yoke 19 faces the rotor 14. Rotor 1
Reference numeral 4 denotes an annular magnetic path member 15 having a U-shaped cross section in which an annular groove 15a into which a yoke 19 to be described later is inserted is formed, and a pulley 16 press-fitted to the outer peripheral surface of the magnetic path member 15 and integrally welded thereto. Consists of The pulley 16 includes a belt hook 16a having a plurality of V-grooves and flanges 16b formed at both ends of the belt hook 16a. The rotor 14 having such a structure is rotatably supported by a bearing 17 press-fitted into the cylindrical portion 1b of the compressor 1. Reference numeral 15b is an arc-shaped slit formed in the flat plate portion of the magnetic path member 15.

In the annular groove 15a of the rotor 14, the support plate 1 press-fitted and fixed to the cylindrical portion 1c of the compressor 1 is provided.
A yoke 19 in which 8 is welded to the side plate is inserted. In the annular groove 19a of the yoke 19, an electromagnetic coil 20 wound and fixed in advance in a cylindrical shape, a coil housing portion 22 into which approximately half of the electromagnetic coil 20 is inserted, and a Through hole 19b formed in side plate
A coil bobbin 21 integrally formed with a terminal storage portion 23 inserted therein, a pair of terminals 24 pressed into the terminal storage portion 23 of the coil bobbin 21, and a fitting fitted to the terminal storage portion 23 A housing member 25, a pair of support fittings 27 individually fixed to ends (insulating coating portions) of the pair of lead wires 26 and housed in the fitting housing member 25, and fitted and fixed to the fitting housing member 25. This is a structure including a terminal cover 28 and the like.

The coil bobbin 21 has a shape as shown in FIG. 5 to FIG. 9, and has a coil housing portion 22 having an annular groove 22a formed therein and an open end having a tapered surface 22b. It has a drawer 23a (a drawer 23a-1 at the winding start end of the electromagnetic coil 20 and a drawer 23a-2 at the winding end) that penetrates the terminal housing 23 from the pair of formed recesses 22c.

Also, the terminal housing 23 of the coil bobbin 21
Is a rectangular support base 23b whose tip is fitted in an opening 25b of a metal fitting storage member 25 described later, and a groove 23c formed at a position where the long side of the support base 23b is bisected.
And a pair of prism portions 23d integrally formed at the left and right corners above the support base 23b, a prism-shaped coil support portion 23e protruding from the bottom in the prism portions 23d, and the prism portion 23d. Each end of the electromagnetic coil 20 is formed with an engaging groove 23f into which the end is press-fitted. A space 23g is formed around the coil supporting portion 23e in the prism 23d, and the terminal 24 which is engaged with the guide groove indicated by reference numeral 23h and is press-fitted is held in the space 23g. ing.

Next, the metal fitting storage member 25 will be described with reference to FIGS.
2 will be described. The bracket storage member 25 includes a box-shaped bracket storage section 25a, a rectangular opening 25b protruding from the rear side below the bracket storage section 25a, and an opening 25b.
And a rectangular flat plate-like holding portion 25d protruding at a predetermined angle with respect to the plane of the bracket housing portion 25a. Further, a pair of guide pieces 25e of the support fitting 27 formed at intervals and an insertion port 25f penetrating toward the opening 25b are formed in the fitting storage section 25a. The insertion slot 25
f is a partition 25g integrally formed in the opening 25b.
Is divided into two. A pair of holding grooves 25h for holding the lead wire 26 are formed in a semicircular shape on the front surface of the holding portion 25d. Further, the protrusion 25c has an escape groove 2 for the cut portions at both ends of the electromagnetic coil 20.
5i are formed at intervals.

Next, the terminal cover 28 will be described with reference to FIGS. The terminal cover 28 is a flat box-shaped lid portion 28 that is superimposed on the metal housing portion 25a of the metal housing member 25.
a, and a rectangular flat plate-like holding portion 28b which is also superimposed on the holding portion 25d of the metal fitting storage member 25. The guide piece 25 of the metal fitting storage part 25a is provided in the lid part 28a.
The holding portion 28d is formed integrally with the projection 28c fitted between the e and the partition 25g in the opening 25b of the metal fitting storage member 25 at a predetermined interval. Further, on the front of the holding portion 28b, the holding portion 2 of the metal fitting storage member 25 is provided.
A pair of holding grooves 28e having a semi-circular shape are formed so as to be surface-matched with a pair of holding grooves 25h formed in 5d.

Next, the metal support member 25 and the terminal cover 28
The support fitting 27 housed in the space defined by the above will be described. As in the lead wire assembly shown in FIGS. 15 and 16, a pair of support fittings 27 are fixed to the end (insulating coating) of the lead wire 26 and the lead wire 2.
6 and the diode 29 which is a surge voltage absorbing element
Connected to the lead wire. Also, a protruding piece 27a is formed integrally with these support fittings 27, so that the terminal 2
4 is inserted. The terminal 24 is
A pair of grooves is formed in which the rectangular coil-shaped coil support portion 23e formed in the terminal storage portion 23 of the coil bobbin 21 is inserted and an end of the electromagnetic coil 20 is fitted, and is bent into a U-shape. Shape. An elastic piece 24a is formed integrally with the terminal 24, and the projecting piece 27a of the support fitting 27 is inserted into the terminal 24 and connected thereto while elastically deforming the elastic piece 24a (see FIG. 4). .

The assembling of the excitation device M composed of the above-described components is performed by assembling the electromagnetic coil 20 wound and fixed in advance.
Is inserted into the annular groove 22a of the coil bobbin 21 while pulling out both ends of the electromagnetic coil 20 from the outlet 23a. Also, the electromagnetic coil 20 protruding from the coil housing portion 22 of the coil bobbin 21 has an open end formed with a tapered surface 30a.
The coil cover 30 is fitted. Then, the coil housing portion 22 of the coil bobbin 21 and the coil cover 30 are pressed into the annular groove 19 a of the yoke 19 while the terminal housing portion 23 is inserted into the through hole 19 b formed in the side plate of the yoke 19. After the press-fitting, a caulking piece 19c is formed by caulking at the opening end of the yoke 19, and the tapered surface 30a of the coil cover 30 is cut into the tapered surface 22b of the coil bobbin 21. And the electromagnetic coil 20 insulated from the outside
Is fixed in the yoke 19.

Both ends of the electromagnetic coil 20 drawn into the terminal storage portion 23 of the coil bobbin 21 are bent on the upper surface of the coil support portion 23e of the terminal storage portion 23 to be engaged with the engagement grooves 23f, and then the coil support portion is bent. It is held on the coil supporting portion 23e by the terminal 24 which is press-fitted around the portion 23e. Next, the opening 25 b of the fitting housing member 25 is fitted into the terminal housing 23 of the coil bobbin 21 while the projection 25 c is pressed between the through hole 19 b of the yoke 19 and the terminal housing 23 of the coil bobbin 21. At this time, the metal fitting storage member 25
Is pressed into the groove 23c of the terminal accommodating portion 23, and the cut portions at both ends of the electromagnetic coil 20 approach the clearance grooves 25i formed in the protrusion 25c as shown in FIG.

Next, a support fitting 27 fixed to the end of the lead wire 26 and to which the lead wire of the diode 29 is fixed.
Is stored in the metal fitting storage member 25, and the protruding piece 27 a of the support metal 27 is pressed into the terminal 24. After connecting the support fitting 27 and the terminal 24, the terminal cover 28 is fitted to the fitting storage member 25, and the lead wire 26 is connected to each of the holding portions 25d and 28.
b, and is fixed.
Is sandwiched between the partition 25g of the metal fitting storage member 25 and the holding piece 28d of the terminal cover 28. And
Terminal storage part 23 and metal fitting storage member 25 of coil bobbin 21
The assembly of the excitation device M is completed by integrally fixing the terminal cover 28 by ultrasonic welding or the like.

The electromagnetic clutch 2 having the above structure
The pulley 1 is a belt that is hung on the pulley on the engine side.
6, the rotor 14 is rotated by the driving of the engine. Therefore, when the electromagnetic coil 20 is energized to excite the yoke 19, the armature 13 is attached to the rotor 14 against the elastic force of the damper rubber 12. Magnetically attracted, the compressor 1 is driven. Also, the electromagnetic coil 20
When the power is cut off, the armature 13
The compressor 1 stops because it is separated from the rotor 14 by the elastic restoring force.

In the above description, the coil cover 3
Although the electromagnetic coil 20 is insulated from the outside by fitting 0, the resin may be poured into the annular groove 19a of the yoke 19 to insulate the electromagnetic coil 20 from the outside. Also rotor 1
Reference numeral 4 denotes a structure in which the pulley 16 is press-fitted and welded to the magnetic path member 15 and welded. However, the outer peripheral surface of the magnetic path member 15 may be formed as a belt hook by rolling. Furthermore, the diode 29 is incorporated in the terminal housing 23, but the lead wire 26
May be provided on the power supply side to which is connected. Although the electromagnetic coupling device has been described as an electromagnetic coupling device, the electromagnetic coupling device of claim 1 may be an electromagnetic brake.

[0026]

As described above, the electromagnetic coupling device of the present invention
An opening fitted to the distal end of the terminal accommodating portion projects from the side plate of the bracket accommodating portion, the through-hole and the terminal of the further projecting to the yoke to the outside of the coil support portion in the terminal accommodating portion through the opening
Press-fit between the housing and the through hole of the yoke and the electromagnetic coil
Since the metal fitting storage member in which the projections provided between the cut portions at both ends of the electromagnetic coil are integrally formed is provided, each cut portion at both ends of the electromagnetic coil is insulated from the outside by the projections of the metal housing. be able to. Therefore, unlike the conventional measures for insulating the cut portion of the electromagnetic coil by the wall portion of the terminal storage portion,
Since the shape of the terminal storage portion of the coil bobbin can be reduced, the size of the electromagnetic coupling device can be reduced.

Further, since a holding portion is provided between the metal fitting housing member and the terminal cover and the lead wire is sandwiched between the metal housing member and the terminal cover, the coil bobbin does not have to protrude from the yoke of the terminal housing portion, and the rotor belt can be hung. The flange portion formed in the portion and the holding portion can be brought close to each other. Therefore, the structure of the electrical connection portion between the both ends of the electromagnetic coil and the lead wire is downsized, and the downsizing of the electromagnetic coupling device is achieved.

Further, since the partition wall of the metal housing is press-fitted into the groove formed in the terminal housing of the coil bobbin, the coil bobbin and the metal housing are firmly integrated to ensure reliability in quality. Can be improved. In addition, since the case portion of the surge absorbing element is interposed between the end surface of the partition wall portion of the bracket housing member and the end surface of the holding piece of the terminal cover, the vibration of the surge absorbing element due to vibration is suppressed, and the quality is reduced. Reliability can be improved.

[Brief description of the drawings]

FIG. 1 is a rear view of an electromagnetic coupling device according to an embodiment of the present invention.

FIG. 2 is a side view in which a part of the electromagnetic coupling device of FIG. 1 is sectioned;

FIG. 3 is a rear view of only the main part of the exciting device enlarged with the terminal cover of FIG. 1 removed.

FIG. 4 is a sectional view taken along line AA of FIG.

FIG. 5 is a rear view of only the main part of the coil bobbin in which the periphery of the terminal housing is enlarged.

FIG. 6 is a sectional view taken along the line BB of FIG. 5;

FIG. 7 is a sectional view taken along line CC of FIG. 5;

FIG. 8 is a sectional view taken along the line DD in FIG. 5;

FIG. 9 is a front view of only the main part of the coil bobbin in which the periphery of the coil outlet is enlarged.

FIG. 10 is a rear view of the fitting storage member.

FIG. 11 is a front view of a fitting storage member.

FIG. 12 is a side view of a fitting storage member.

FIG. 13 is a front view of the terminal cover.

FIG. 14 is a sectional view taken along the line EE of FIG. 13;

FIG. 15 is a plan view of the lead wire assembly.

FIG. 16 is a side view of the lead wire assembly of FIG.

[Explanation of symbols]

19 ... Yoke, 20 ... Electromagnetic coil, 21 ... Coil bobbin, 23 ... Terminal storage part, 24 ... Terminal, 25 ... Hardware storage member, 26 ... Lead wire, 27 ... Support metal fitting, 28 ... Terminal cover, 29 ... Diode.

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16D 27/10 H01F 5/02 H01F 7/06

Claims (4)

(57) [Claims] In an electromagnetic coupling device provided with an exciting device, the exciting device has a terminal receiving portion formed integrally with a coil receiving portion inserted into an annular groove of the yoke, and the terminal receiving portion is formed on a side plate of the yoke. A coil bobbin inserted into the formed through-hole, an electromagnetic coil housed in the coil housing portion of the coil bobbin, the ends of which are individually drawn out from a pair of outlets in the terminal housing portion, and the end portion of the electromagnetic coil is held. A pair of terminals individually fixed to each coil supporting portion in the terminal storage portion and connected to the end portion, and an opening protruding from a side plate of the metal fitting storage portion and fitted to a tip of the terminal storage portion.
And further projecting from the opening to the outside of the coil supporting portion in the terminal accommodating portion, the through hole of the yoke and the terminal.
The yoke is press-fitted between the housing and the through hole of the yoke and the electrode.
A protrusion provided between the cut portions at both ends of the magnetic coil is integrally formed with the fitting storage member, and is fixed to the end of the lead wire, and is stored in the fitting storage member and in the opening. An electromagnetic coupling device comprising: a pair of support fittings each having an inserted protruding piece connected to the terminal; and a terminal cover fitted to the fitting storage member and sealing the fitting storage portion. 2. An exciter, a rotor having an annular groove into which the exciter is inserted and one flange of a belt hook protruding from a side plate of a yoke of the exciter, and being magnetically attracted to the rotor. In the electromagnetic coupling device provided with an armature, the exciting device may be configured such that a terminal storage portion is integrally formed in a coil storage portion inserted into the annular groove of the yoke, and the terminal storage portion is formed in a side plate of the yoke. A coil bobbin inserted into the hole, an electromagnetic coil housed in the coil housing portion of the coil bobbin, the ends of which are individually drawn out from a pair of outlets in the terminal housing portion, and the end portion of the electromagnetic coil being held. A pair of terminals individually fixed to each coil support portion in the terminal storage portion and connected to the end portion, and an opening protruding from a side plate of the metal fitting storage portion and fitted with a tip of the terminal storage portion. A projection is further formed from the opening to the outside of the coil supporting portion in the terminal storage portion, and a projection inserted into the through hole of the yoke is integrally formed, and extends outward from the metal fitting storage portion. A fitting housing member integrally formed with a holding portion of a lead wire facing the flange portion of the belt hooking portion, and fixed to an end of the lead wire, housed in the fitting housing member and inserted into the opening. A pair of support fittings connected to the terminals, a lid fitted to the fitting storage member, and a lid that seals the fitting storage section and a holding section that is overlapped with the holding section via the lead wire. An electromagnetic coupling device, comprising: a terminal cover integrally formed with a portion. 3. A groove is formed between a pair of the coil support portions formed in a terminal storage portion of the coil bobbin, and the inside of the opening of the metal housing member is divided into two parts in the metal housing member. A partition wall portion is formed, and the partition wall portion is inserted into the groove.
The electromagnetic coupling device according to any one of claims 1 and 2 . 4. The terminal cover is integrally formed with holding pieces facing the partition wall end face of the metal fitting storage member, and a case is interposed between the partition wall end face and the holding piece end face. The electromagnetic coupling device according to claim 3, wherein a pair of lead wires of the surge absorbing element are individually fixed to the pair of support brackets.