EP4006942A1 - Zubehörvorrichtung für ein elektrisches gerät, elektrisches gerät, an dem die zubehörvorrichtung befestigt werden kann, und elektrisches gerät mit der zubehörvorrichtung - Google Patents

Zubehörvorrichtung für ein elektrisches gerät, elektrisches gerät, an dem die zubehörvorrichtung befestigt werden kann, und elektrisches gerät mit der zubehörvorrichtung Download PDF

Info

Publication number
EP4006942A1
EP4006942A1 EP21770985.6A EP21770985A EP4006942A1 EP 4006942 A1 EP4006942 A1 EP 4006942A1 EP 21770985 A EP21770985 A EP 21770985A EP 4006942 A1 EP4006942 A1 EP 4006942A1
Authority
EP
European Patent Office
Prior art keywords
electrical device
accessory device
engagement
accessory
attachment
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.)
Withdrawn
Application number
EP21770985.6A
Other languages
English (en)
French (fr)
Other versions
EP4006942A4 (de
Inventor
Yukinari Furuhata
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.)
Fuji Electric FA Components and Systems Co Ltd
Original Assignee
Fuji Electric FA Components and Systems 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 Fuji Electric FA Components and Systems Co Ltd filed Critical Fuji Electric FA Components and Systems Co Ltd
Publication of EP4006942A1 publication Critical patent/EP4006942A1/de
Publication of EP4006942A4 publication Critical patent/EP4006942A4/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/042—Different parts are assembled by insertion without extra mounting facilities like screws, in an isolated mounting part, e.g. stack mounting on a coil-support

Definitions

  • the present invention relates to an accessory device of an electrical appliance, an electrical appliance to which the accessory device can be attached, and an electrical appliance provided with the accessory device.
  • an accessory device such as a surge absorption unit
  • an electrical device such as a thermal overload relay or an electromagnetic contactor of an electromagnetic switch
  • a screw terminal of the accessory device is connected to a load-side screw terminal of the electrical device by a screw terminal method. Therefore, the screw terminal serves to make not only electrical but also mechanical connection between the electrical device and the accessory device.
  • an accessory device can be commonly applied to electrical devices such as electromagnetic contactors and electromagnetic switches
  • the fixing surface of the electrical device varies depending on the type of electrical device. Therefore, an urgent issue to be addressed has been how to achieve standardization of an attachment structure in detachably attaching an accessory device to different types of electrical devices.
  • an object of the present invention to provide an accessory device for an electrical device capable of achieving standardization of an attachment structure in detachably attaching the accessory device to different types of electrical devices, an electrical device allowing for attachment of the accessory device, and an electrical device including the accessory device.
  • an accessory device for an electrical device including a terminal configured to allow for attachment of one end of a conductor portion of a flexible connecting electric wire and including an element configured to exert a predetermined effect on operation of the electrical device, wherein the accessory device includes a first engagement portion and a second engagement portion for detachably engaging a fixed surface of the accessory device to a fixing surface of the electrical device, the first engagement portion having a standardized shape regardless of a type of the electrical device, and the second engagement portion being formed by a plurality of engagement portions having different positions according to a shape of the fixing surface of the electrical device.
  • an electrical device allowing for attachment of an accessory device, the electrical device including a spring terminal configured to allow for attachment of one end of a conductor portion of a flexible connecting electric wire and performing a predetermined operation by an effect of the accessory device, wherein the electrical device includes a first engaged portion and a second engaged portion for detachably engaging a fixing surface of the electrical device with a fixed surface of the accessory device, the first engaged portion having a standardized shape regardless of a type of the electrical device, and the second engaged portion having different positions according to a shape of the fixing surface of the electrical device.
  • an electrical device including an accessory device, in which the electrical device includes a spring terminal configured to allow for attachment of one end of a conductor portion of a flexible connecting electric wire and performs a predetermined operation by an effect of the accessory device, the electrical device including: a first engaged portion provided on the electrical device and having a standardized shape regardless of a type of the electrical device; a second engaged portion provided on the electrical device and having different positions according to a shape of a fixing surface of the electrical device; the accessory device for an electrical device, including a terminal configured to allow for attachment of an other end of the conductor portion of the flexible connecting electric wire and including an element configured to exert a predetermined effect on operation of the electrical device; a first engagement portion provided on the accessory device and having a standardized shape regardless of the type of the electrical device; and a plurality of second engagement portions provided on the accessory device and located at different positions corresponding to the positions of the second engaged portion, wherein the first engagement portion detachably engages with the first engaged
  • an accessory device for an electrical device an electrical device allowing for attachment of the accessory device, and an electrical device including the accessory device according to the present invention
  • the standardization of attachment structure can be achieved when detachably attaching the accessory device to different types of electrical devices.
  • FIG. 1 illustrates an electromagnetic contactor 1 and a surge absorption unit 9 of a first embodiment arranged inside a control panel (not illustrated).
  • a top hat-shaped rail RL extending in a left-right direction is arranged inside the control panel.
  • the spring terminal type electromagnetic contactor 1 is mounted on the top hat-shaped rail RL via a rail holding portion 18. Additionally, the surge absorption unit 9, which absorbs a surge generated during opening and closing of a contact of the electromagnetic contactor 1, is connected to a lower side of the electromagnetic contactor 1.
  • the electromagnetic contactor 1 includes a contact mechanism 3 illustrated in FIG. 3 , an electromagnet unit 4 driving the contact mechanism 3 as illustrated in FIG. 4 , and a case 2 housing the contact mechanism 3 and the electromagnet unit 4 thereinside.
  • the case 2 includes a substantially rectangular case main body 5 extending in a front-rear direction, the left-right direction, and an up-down direction and a case lid 6 covering the case main body 5 with an opening front side from the front.
  • the rail holding portion 18 described above is formed at a bottom portion of the case main body 5.
  • the case 2 is formed with a contact mechanism housing portion 7 housing the contact mechanism 3 and an electromagnet unit housing portion 8 in the center thereof.
  • the contact mechanism housing portion 7 houses the contact mechanism 3, and the electromagnet unit housing portion 8 houses the electromagnet unit 4.
  • a plurality of pairs of electric wire insertion spaces 10a to 10e are formed on both upper and lower sides of the case main body 5 across the contact mechanism housing portion 7, and a partition wall 11 is provided between the adjacent electric wire insertion spaces 10a to 10e.
  • a front plate 6a of the case lid 6 is provided with a pair of electric wire insertion ports 12a and 13a communicating with the pair of electric wire insertion spaces 10a.
  • the upper electric wire insertion port 12a is provided with two electric wire insertion ports 12a1 and 12a2 for the electric wire insertion space 10a
  • the lower electric wire insertion port 13a is provided with two electric wire insertion ports 13a1 and 13a2 for the electric wire insertion space 10a
  • the front plate 6a of the case lid 6 is formed with a plurality of pairs of electric wire insertion ports 12b to 12e and 13b to 13e aligned in the left-right direction with respect to the pair of electric wire insertion ports 12a and 13a.
  • the plurality of pairs of electric wire insertion ports 12b to 12e and 13b to 13e allow an outside of the case lid 6 to communicate with the pair of electric wire insertion spaces 10b to 10e.
  • the plurality of pairs of electric wire insertion ports 12b to 12e and 13b to 13e, respectively, are also provided with two electric wire insertion ports for the electric wire insertion spaces 10b to 10e.
  • three pairs of electric wire insertion ports 12a to 12c and 13a to 13c are used for main circuit terminals, a pair of wire insertion ports 12d and 13d is used for auxiliary terminals, and a pair of electric wire insertion ports 12e and 13e is used for coil terminals of the electromagnet unit 4.
  • insertion holes 14 for inserting a clamp release tool are formed in communication with the electric wire insertion spaces 10a to 10e near the plurality of pairs of electric wire insertion ports 12a to 12e and 13a to 13e.
  • the insertion holes 14 are formed to correspond to the respective two electric wire insertion ports of the plurality of pairs of electric wire insertion ports 12a to 12e and 13a to 13e.
  • the contact mechanism 3 includes a plurality of pairs of fixed contacts 15 being apart from each other in the up-down direction and fixed to the case main body 5 and a plurality of movable contacts 16 being contactable with and separable from each pair of fixed contacts 15, as illustrated in FIG. 3 .
  • the plurality of movable contacts 16 are fixed to a movable contact supporting member 17 extending long and narrow in the left-right direction at predetermined intervals along the left-right direction.
  • the movable contact supporting member 17 moves in the right direction via an unillustrated drive lever, and each of the plurality of movable contacts 16 fixed to the movable contact supporting member 17 comes into contact with each pair of fixed contacts 15.
  • each one fixed contact 15 on the upper side and each other fixed contact 15 on the lower side conduct with each other via each of the movable contacts 16 to close the current path.
  • a spring terminal 20 for connecting an electric wire to be described later to the fixed contact 15 is arranged in the pair of electric wire insertion spaces 10a provided in the case main body 5.
  • the other plurality of pairs of electric wire insertion spaces 10b to 10e are also arranged with spring terminals 20 having the same configuration as that of the spring terminal 20 for connecting an electric wire W to each fixed contact 15 arranged in the pair of electric wire insertion spaces 10a in FIG. 4 .
  • the fixed contact 15 includes a flat plate-shaped fixed contact portion 15a with which the movable contact 16 contacts, a flat plate-shaped base plate portion 15b bent in a direction extending rearward from the fixed contact portion 15a, a flat plate-shaped seat plate portion 15c bent in a direction extending downward from the base plate portion 15b, and a flat plate-shaped elastic member-side contacting portion 15d bent in a direction extending forward in parallel with the base plate 15b from the seat plate portion 15c.
  • the fixed contact portion 15a is located within the contact mechanism housing portion 7, and the base plate portion 15b, the seat plate portion 15c, and the elastic member-side contact portion 15d are fixed to the case main body 5 along an inner wall of the case main body 5 forming the electric wire insertion space 10a.
  • the fixed contact portion 15a is located within the contact mechanism housing portion 7, and the base plate portion 15b, the seat plate portion 15c, and the elastic member-side contact portion 15d are fixed to the case main body 5 so as to be located within the electric wire insertion spaces 10b to 10e.
  • the above-mentioned spring terminal 20 includes an elastic member 21 and the elastic member-side contact portion 15d of the fixed contact 15.
  • the elastic member 21 is a member that includes a fixed portion 21a, a bent portion 21b having an obtuse-angled shape provided from one end of the fixed portion 21a, and an inclined portion 21c continuous to the bent portion 21b.
  • the fixed portion 22 is fixed to the base plate portion 15b of the fixed contact 15, and a leading end of the inclined portion 21c is arranged in contact with the elastic member-side contact portion 15d of the fixed contact 15.
  • the inclined portion 21c is divided into two divided inclined portions 21c1 and 21c2 extending in parallel with each other.
  • the divided inclined portions 21c1 and 21c2 of each elastic member 21 arranged in the plurality of pairs of electric wire insertion spaces 10a of the case main body 5 are arranged at positions facing each two electric wire insertion ports 12a1, 12a2 and 13a1, 13a2 that form the electric wire insertion ports 12a illustrated in FIG. 2 .
  • the divided inclined portions 21c1 and 21c2 of the elastic member 21 are arranged to face the respective two electric wire insertion ports forming the other plurality of pairs of electric wire insertion ports 12b to 12e and 13b to 13e.
  • the electric wire insertion ports 12a to 12c of the electromagnetic contactor 1 serve as a power supply-side terminal portion
  • the electric wire insertion ports 13a to 13c thereof serve as a load-side terminal portion.
  • the surge absorption unit 9 is a device that absorbs a surge generated during opening and closing of the contact of the electromagnetic contactor 1 by connecting to the load-side terminal portion (the electric wire insertion ports 13a to 13c ) of the electromagnetic contactor 1.
  • the surge absorption unit 9 is a circuit in which a surge absorption element formed by a series circuit including a resistor (not illustrated) and a capacitor (not illustrated) is delta-connected, and is incorporated in a unit case 9a, as illustrated in FIG. 1 .
  • Three unit electric wires W connected to the delta-connected circuit extend to an outside of the unit case 9a.
  • FIGS. 5 to 8B illustrate a structure in which the surge absorption unit 9 is connected to the case main body 5 of the electromagnetic contactor 1.
  • each of the three core wires W1 is elastically held between the leading end of one of the divided inclined portions 21c1 and 21c2 of the inclined portion 21c of the elastic member 21 and the elastic member-side contact portion 15d of the fixed contact 15.
  • the three unit electric wires W of the surge absorption unit 9 are connected to the load-side terminal portion (the electric wire insertion ports 13a to 13c) of the electromagnetic contactor 1.
  • a first engagement portion 22 is formed on a side wall adjacent to the load-side terminal portion (the electric wire insertion ports 13a to 13c) of the case main body 5 of the electromagnetic contactor 1, and second to fourth engagement portions 27 to 29 are formed on one side surface of the unit case 9a of the surge absorption unit 9.
  • the side wall of the electromagnetic contactor 1 with the first engagement portion 22 formed thereon is a wall that faces downward when the electromagnetic contactor 1 is mounted on the top hat-shaped rail RL, and, as illustrated in FIG. 6 , an opening portion 5a is formed between a left wall 5b and a right wall 5c. Then, a first engagement forming member 23 is formed at a boundary between the left wall 5b and the opening portion 5a along the front-rear direction, and a second engagement forming member 24 is formed at a boundary between the right wall 5c and the opening portion 5a along the front-rear direction. The first and second engagement forming members 23 and 24 form the first engagement portion 22.
  • the first engagement forming member 23 includes a rising portion 23a protruding in a direction away from the left wall 5b and a bent portion 23b formed by bending in an L shape from the rising portion 23a.
  • the second engagement forming member 24 includes a rising portion 24a protruding in a direction away from the right wall 5c and a bent portion 24b being bent in an L shape from the rising portion 24a and extending toward the bent portion 23b of the first engagement forming member 23.
  • first rib 25 facing the left wall 5b and a second rib 26 facing the right wall 5c.
  • a third rib 5d having the same height as that of the first rib 25 and the second rib 26.
  • the second engagement portion 27 formed on the surge absorption unit 9 is a long portion protruding from the one side surface of the unit case 9a, as illustrated in FIG. 7A .
  • a narrow portion 27a having a width dimension a is formed on one side in a longitudinal direction
  • a wide portion 27b having a width dimension b larger than the width dimension a of the narrow portion 27 is formed on the other side in the longitudinal direction
  • a mountain portion 27c having a triangular cross section formed so as to protrude up to a position higher than the narrow portion 27a and the wide portion 27b is formed on an end portion side of the wide portion 27b away from the narrow portion 27a.
  • the wide portion 27b is integrally formed with a base portion 27d protruding from the one side surface of the unit case 9a, and extends in parallel with the one side surface of the unit case 9a with a gap therebetween. Additionally, the narrow portion 27a is also integrally formed with the base portion 27d, and a leading end-side thereof extends in parallel with the one side surface of the unit case 9a with a gap therebetween.
  • the third engagement portion 28 and the fourth engagement portion 29 formed on the surge absorption unit 9 are formed by protruding from the one side surface of the unit case 9a in a direction orthogonal to a direction in which the second engagement portion 27 extends at positions symmetrical with respect to the narrow portion 27a.
  • On sides of the third connection portion 28 and the fourth connection portion 29 facing the narrow portion 27a are formed claw portions 28a and 29a.
  • the second engagement portion 27 of the surge absorption unit 9 is moved toward a bottom portion of the first engagement portion 22 of the electromagnetic contactor 1, and the narrow portion 27a of the second engagement portion 27 is inserted between the first engagement forming member 23 and the second engagement forming member 24.
  • the unit electric wires W of the surge absorption unit 9 are connected to the load-side terminal portion (the electric wire insertion ports 13a to 13c) of the spring terminal type electromagnetic contactor 1 of the present embodiment, an arrangement space for the surge absorption unit 9 inside the control panel needs to be considered.
  • the second engagement portion 27 formed on the unit case 9a of the surge absorption unit 9 engages with the first engagement portion 22 and the third rib 5d formed on the side wall of the case main body 5 of the electromagnetic contactor 1 to attach the surge absorption unit 9 to the side wall of the case main body 5 of the electromagnetic contactor 1. It is thus unnecessary to provide a space for arranging the surge absorption unit in a widthwise direction (the left-right direction of FIG. 1 ) of the product inside the control panel, so that space saving inside the control panel can be achieved.
  • the mountain portion 27c of the second engagement portion 27 engages with the edge of the opening portion 5a to restrict the movement of the second engagement portion 27 in the opposite direction, which can therefore prevent the surge absorption unit 9 from being detached from the electromagnetic contactor 1.
  • the mountain portion 27c of the second engagement portion 27 in the present embodiment has a triangular cross-sectional shape, even a circular cross-sectional shape or a polygonal cross-sectional shape such as a quadrangular cross-sectional shape can prevent detachment of the surge absorption unit 9 from the electromagnetic contactor 1.
  • the first engagement portion 22 (the first engagement forming member 23 and the second engagement forming member 24) and the edge of the wide portion 27b are engaged with each other.
  • the wide portion 27b will be engaged with the first engagement portion 22 in a press-fitted state, which can therefore ensure that the surge absorption unit 9 does not rattle against the electromagnetic contactor 1.
  • FIG. 9 illustrates an electromagnetic switch 30 and the surge absorption unit 9 of a second embodiment arranged inside the control panel.
  • the electromagnetic switch 30 is mounted on the top hat-shaped rail RL inside the control panel, and the surge absorption unit 9 is connected to a lower side of the electromagnetic switch 30.
  • the electromagnetic switch 30 is a device in which the spring terminal type electromagnetic contactor 1 and a thermal overload relay 31 are connected in series.
  • the thermal overload relay 31 includes an electromagnetic contactor connecting portion 32 connected to the load-side terminal portion (the electric wire insertion ports 13a to 13c) of the electromagnetic contactor 1 and a main body portion 33.
  • the main body portion 33 includes a box-shaped case 35 housing three heat elements 34 thereinside.
  • a box-shaped case 35 housing three heat elements 34 thereinside.
  • electric wire insertion ports 36a, 36b, and 36c of three main circuit terminals into which connecting electric wires are inserted one by one.
  • electric wire insertion ports 37a and 37b of auxiliary contact terminals into which two electric wires similar to those of the electromagnetic contactor 1 can be inserted.
  • the front plate 35a is formed with an insertion hole 38 for inserting a clamp release tool near each of the electric wire insertion ports 36a, 36b, 36c, 37a, and 37b.
  • the spring terminals 39 are arranged in the case 35 facing the electric wire insertion ports 36a, 36b, and 36c.
  • the spring terminals 39 include an elastic member 21 similar to the spring terminal 20 of the electromagnetic contactor 1 illustrated in the first embodiment and the elastic member-side contacting portion 15d of the fixed contact 15, as illustrated in FIG. 10 .
  • the fixed contacts 15 of the three spring terminals 39 are connected to each of output ends of the three heat elements 34 housed in the case 35.
  • three intermediate connection conductors 40 are connected to each of input ends of the three heat elements 34.
  • the three intermediate connection conductors 40 are connected to three rod-shaped external connection conductors 41 extending downward from the electromagnetic contactor connecting portion 32.
  • the external connection conductors 41 of the electromagnetic contactor connecting portion 32 are inserted into the electric wire insertion ports 13a to 13 serving as the load-side terminal portion of the electromagnetic contactor 1, thereby elastically holding the three external connection conductors 41 between leading ends of the elastic members 21 (the inclined portions 21c) and the elastic member-side contacting portions 15d of the fixed contacts 15.
  • the thermal overload relay 31 is connected to the load-side terminal portion (the electric wire insertion ports 13a to 13c) of the electromagnetic contactor 1 to form the electromagnetic switch 30.
  • the case 35 on the side where the electric wire insertion ports 36a, 36b, and 36c of the main circuit terminals of the thermal overload relay 31 are formed is referred to as a main circuit terminal-side case 42.
  • a large recessed space S is provided on a rear surface 42a side of the main circuit terminal-side case 42. Using the space S, the surge absorption unit 9 is connected to the rear surface 42a of the main circuit terminal-side case 42.
  • FIGS. 11 and 12 illustrate a structure in which the surge absorption unit 9 is connected to the thermal overload relay 31 of the electromagnetic switch 30.
  • the surge absorption unit 9 uses the same structure as that of the device connected to the electromagnetic contactor 1 illustrated in FIG. 1 .
  • a fifth engagement portion 43 is formed on the rear surface 42a of the main circuit terminal-side case 42 of the thermal overload relay 31.
  • the fifth engagement portion 43 is a portion that includes a first engagement forming member 44 and a second engagement forming member 45 extending in parallel with each other and a connecting portion 46 for connecting the first and second engagement forming members 44 and 45 on the case 35 side.
  • the first engagement forming member 44 and the second engagement forming member 45 are substantially the same in structure as the first engagement forming member 23 and the second engagement forming member 24 forming the first engagement portion 22 of the electromagnetic contactor 1.
  • the first engagement forming member 44 includes a rising portion 44a protruding in a direction away from the rear surface 42a and a bent portion 44b formed by bending in an L shape from the rising portion 44a.
  • the second engagement forming member 45 includes a rising portion 45a protruding in a direction away from the rear surface 42a and a bent portion 45b being bent in an L shape from the rising portion 45a and extending toward the bent portion 44b of the first engagement forming member 44.
  • the connecting portion 46 is connected to the bent portion 44b of the first engagement forming member 44 and the bent portion 45b of the second engagement forming member 45 on the case 35 side.
  • a distance between facing surfaces of the bent portions 44b and 45b of the first and second engagement forming members 44 and 45 of the fifth engagement portion 43 is smaller than the width dimension b (see FIG. 7A ) of the wide portion main body 27b2 of the second engagement portion 27 of the surge absorption unit 9, and a distance between facing surfaces of the rising portions 44a and 45a thereof is larger than the width dimension b of the wide portion main body 27b2.
  • a triangular protrusion 47 is formed on an outer wall of the rising portion 44a of the first engagement forming member 44, and a triangular protrusion 48 is formed on an outer wall of the rising portion 45a of the second engagement forming member 45.
  • the one side surface of the unit case 9a of the surge absorption unit 9 where the second to fourth engagement portions 27 to 29 are formed is slidingly moved along the rear surface 42a of the main circuit terminal-side case 42 of the thermal overload relay 31 where the fifth engagement portion 43 is formed.
  • the second engagement portion 27 of the surge absorption unit 9 enters insides of the first engagement forming member 44 and the second engagement forming member 45 forming the fifth engagement portion 43.
  • the claw portion 28a of the third engagement portion 28 of the surge absorption unit 9 engages with the protrusion 47 of the first engagement forming member 44, and the claw portion 29a of the fourth engagement portion 29 engages with the protrusion 48 of the second engagement forming member 45.
  • the second engagement portion 27 of the surge absorption unit 9 comes in contact with the first engagement forming member 44 (the bent portion 44b) and the second engagement forming member 45 (the bent portion 45b).
  • the second engagement portion 27 generates a pushing force against the first engagement forming member 44 and the second engagement forming member 45 of the fifth engagement portion 43, whereby the third engagement portion 28 engages with the first engagement forming member 44, and the fourth engagement portion 29 engages with the second engagement forming member 45 to restrict movement in the direction opposite to the sliding direction.
  • This allows for attachment of the surge absorption unit 9 to the rear surface 42a of the main circuit terminal-side case 42 of the thermal overload relay 31.
  • the unit electric wires W of the surge absorption unit 9 are connected to the load-side terminal portion (the electric wire insertion ports 13a to 13c) of the spring terminal type electromagnetic contactor 1. Then, the second engagement portion 27 formed on the unit case 9a of the surge absorption unit 9 engages with the fifth engagement portion 43 formed on the rear surface 42a of the main circuit terminal-side case 42 of the thermal overload relay 31, and the third and fourth engagement portions 28 and 29 of the surge absorption unit 9 engage with the protrusions 47 and 48 formed on the first engagement forming member 44 and the second engagement forming member 45 forming the fifth engagement portion 43.
  • the surge absorption unit 9 is attached to the thermal overload relay 31, it is unnecessary to provide an arrangement space for the surge absorption unit 9 inside the control panel, which can therefore achieve space saving inside the control panel.
  • the large recessed space S is provided on the rear surface 42a side of the main circuit terminal-side case 42 of the thermal overload relay 31. Since the surge absorption unit 9 is attached to the thermal overload relay 31 by using the space S, the surge absorption unit 9 does not protrude from the periphery of the electromagnetic switch 30. Thus, even the electromagnetic switch 30 with the surge absorption unit 9 attached thereto can be arranged in a narrow space inside the control panel.
  • the second to fourth engagement portions 27 to 9 formed on the unit case 9a of the surge absorption unit 9 are formed so as to be engageable with both the fifth engagement portion 43 of the thermal overload relay 31 and the first engagement portion 22 of the electromagnetic contactor 1. This allows for standardization of the attachment structure for the electromagnetic contactor 1 and the thermal overload relay 31, so that manufacturing cost can be reduced.
  • the present embodiment has the structure in which the second to fourth engagement portions 27 to 29 are formed on the same surface (the one side surface) of the unit case 9a of the surge absorption unit 9, and the fifth engagement portion 43 and the protrusions 47 and 48 are formed on the same surface (the rear surface 42a) of the main circuit terminal-side case 42 of the thermal overload relay 31.
  • the gist of the present invention is not limited thereto.
  • the third and fourth engagement portions 29 of the surge absorption unit 9 may be formed on an orthogonal surface adjacent to the one side surface where the second engagement portion 27 is formed, and the protrusions 47 and 48 of the main circuit terminal-side case 42 of the thermal overload relay 31 may be formed on a surface different from the rear surface 42a formed with the fifth engagement portion 43 and at positions where the protrusions 47 and 48 are engaged with the third and fourth engagement portions 29 by sliding movement of the surge absorption unit 9.
  • FIG. 14 illustrates the electromagnetic contactor 1 and a surge absorption unit 9 of a third embodiment arranged inside the control panel (not illustrated).
  • the electromagnetic contactor 1 is the same in configuration as the device illustrated in the first embodiment in FIGS. 1 , 5 , and the like.
  • a second engagement portion 27 having the same structure as that of the device illustrated in the first embodiment is formed, and a sixth engagement portion 50 and a seventh engagement portion 51 are formed in a direction orthogonal to the direction in which the second engagement portion 27 extends and at positions symmetrical with respect to the narrow portion 27a.
  • the sixth engagement portion 50 and the seventh engagement portion 51 are elastically flexible portions that slightly protrude from the one side surface of the unit case 9a and extend in parallel to the one side surface.
  • the mountain portion 27c of the wide portion 27b and the leading end side of the narrow portion 27a enter the opening portion 5a of the electromagnetic contactor 1 to sandwich the third rib 5d between the leading end side of the narrow portion 27a and the one side surface of the unit case 9a and engage the wide portion 27b with the first engagement portion 22 (the first engagement forming member 23 and the second engagement forming member 24).
  • the seventh engagement portion 51 pinches the first rib 25 at a position facing the left wall 5b while elastically deforming, and the sixth engagement portion 50 pinches the second rib 26 at a position facing the right wall 5c while elastically deforming. At this point, the movement of the second engagement portion 27 is restricted.
  • the unit electric wires W of the surge absorption unit 9 are connected to the load-side terminal portion (the electric wire insertion ports 13a to 13c) of the spring terminal type electromagnetic contactor 1 of the present embodiment, the second engagement portion 27 formed on the unit case 9a of the surge absorption unit 9 engages with the first engagement portion 22 formed on the side wall of the case main body 5 of the electromagnetic contactor 1, and the sixth and seventh engagement portions 50 and 51 sandwich the first and second ribs 25 and 26, as a result of which the surge absorption unit 9 is attached to the side wall of the case main body 5 of the electromagnetic contactor 1.
  • FIG. 16 illustrates a structure for attaching the surge absorption unit 9 to a thermal overload relay 31 of a fourth embodiment forming the electromagnetic switch 30 arranged inside the control panel.
  • an eighth engagement portion 52 is formed on the rear surface 42a of the main circuit terminal-side case 42.
  • the eighth engagement portion 52 is a portion that includes a first engagement forming member 53, a second engagement forming member 54, and a connecting portion 55 for connecting one terminal sides of the first and second engagement forming members 53 and 54.
  • the first engagement forming member 53 and the second engagement forming member 54 are substantially the same in structure as the first engagement forming member 23 and the second engagement forming member 24 forming the first engagement portion 22 of the electromagnetic contactor 1 of the first embodiment.
  • the first engagement forming member 53 includes a rising portion 53a protruding in a direction away from the rear surface 42a and a bent portion 53b formed by bending in an L shape from the rising portion 53a.
  • the second engagement forming member 54 includes a rising portion 54a protruding in a direction away from the rear surface 42a and a bent portion 54b being bent in an L shape from the rising portion 54a and extending toward the bent portion 53b of the first engagement forming member 53.
  • a distance between facing surfaces of the bent portions 53b and 54b of the first and second engagement forming members 53 and 54 of the eighth engagement portion 52 is smaller than the width dimension b (see FIG. 7A ) of the wide portion main body 27b2 of the second engagement portion 27 of the surge absorption unit 9, and a distance between facing surfaces of the rising portions 53a and 54a thereof is larger than the width dimension b of the wide portion main body 27b2.
  • engagement arms 56 and 57 extending orthogonally in an outward direction with a gap between them and the rear surface 42a.
  • the second engagement portion 27 of the surge absorption unit 9 enters insides of the first engagement forming member 53 and the second engagement forming member 54 forming the eighth engagement portion 52. Then, the sixth engagement portion 50 of the surge absorption unit 9 pinches the engagement arm 56 while elastically deforming, and the seventh engagement portion 51 thereof pinches the engagement arm 57 while elastically deforming. Additionally, the second engagement portion 27 of the surge absorption unit 9 comes in contact with the first engagement forming member 53 (the bent portion 53b) and the second engagement forming member 54 (the bent portion 54b) .
  • the second engagement portion 27 generates a pushing force against the first engagement forming member 53 and the second engagement forming member 55 of the eighth engagement portion 52, and the sixth and seventh engagement portions 50 and 51 sandwich the engagement arms 56 and 57, whereby the surge absorption unit 9 is attached to the rear surface 42a of the main circuit terminal-side case 42 of the thermal overload relay 31.
  • the unit electric wires W of the surge absorption unit 9 are connected to the load-side terminal portion (the electric wire insertion ports 13a to 13c) of the spring terminal type electromagnetic contactor 1, the second engagement portion 27 formed on the unit case 9a of the surge absorption unit 9 engages with the eighth engagement portion 52 formed on the rear surface 42a of the main circuit terminal-side case 42 of the thermal overload relay 31, and the sixth and seventh engagement portions 50 and 51 of the surge absorption unit 9 sandwich the engagement arms 56 and 57 extending orthogonally from the first and second engagement forming members 53 and 54.
  • the surge absorption unit 9 is attached to the thermal overload relay 31, it is unnecessary to provide an arrangement space for the surge absorption unit 9 inside the control panel, which can therefore achieve space saving inside the control panel.
  • the surge absorption unit 9 is attached to the thermal overload relay 31 by using the space S largely recessed on the rear surface 42a side of the main circuit terminal-side case 42 of the thermal overload relay 31, so that the surge absorption unit 9 does not protrude from the periphery of the electromagnetic switch 30.
  • the electromagnetic switch 30 attached with the surge absorption unit 9 can be arranged in a narrow space inside the control panel.
  • the second engagement portion 27, the sixth engagement portion 50, and the seventh engagement portion 51 formed on the unit case 9a of the surge absorption unit 9 are formed so as to be engageable with both the eighth engagement portion 52 and the engagement arms 56 and 57 of the thermal overload relay 31 and the first engagement portion 22 and the first and the second ribs 25 and 26 of the electromagnetic contactor 1. This allows for standardization of the attachment structure for the electromagnetic contactor 1 and the thermal overload relay 31, so that manufacturing cost can be reduced.
  • the present embodiment has the structure in which the second engagement portion 27 and the sixth and seventh engagement portions 50 and 51 are formed on the same surface (the one side surface) of the unit case 9a of the surge absorption unit 9, and the eighth engagement portion 52 and the engagement arms 56 and 57 are formed on the same surface (the rear surface 42a) of the main circuit terminal-side case 42 of the thermal overload relay 31.
  • the gist of the present invention is not limited thereto.
  • the sixth and seventh engagement portions 50 and 51 of the surge absorption unit 9 may be formed on an orthogonal surface adjacent to the one side surface formed with the second engagement portion 27, and the engagement arms 56 and 57 of the main circuit terminal-side case 42 of the thermal overload relay 31 may be formed on a surface different from the rear surface 42a formed with the eighth engagement portion 52 and at positions where the engagement arms 56 and 57 are engaged with the sixth and seventh engagement portions 50 and 51 by sliding movement of the surge absorption unit 9.
  • each of the above embodiments has described the structure in which the surge absorption unit 9 is attached to the electromagnetic contactor 1 or the structure in which the surge absorption unit 9 is attached to the electromagnetic switch 30.
  • the surge absorption unit 9 may be attached to electrical devices different in structure from the electromagnetic contactor 1 and the electromagnetic switch 30, or an accessory device different in structure from the surge absorption unit 9 may be attached to the electromagnetic contactor 1 or the electromagnetic switch 30.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP21770985.6A 2020-03-19 2021-01-27 Zubehörvorrichtung für ein elektrisches gerät, elektrisches gerät, an dem die zubehörvorrichtung befestigt werden kann, und elektrisches gerät mit der zubehörvorrichtung Withdrawn EP4006942A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020049330 2020-03-19
PCT/JP2021/002869 WO2021186905A1 (ja) 2020-03-19 2021-01-27 電気機器の付属装置、その付属装置が取り付け可能な電気機器及び付属装置を備えた電気機器

Publications (2)

Publication Number Publication Date
EP4006942A1 true EP4006942A1 (de) 2022-06-01
EP4006942A4 EP4006942A4 (de) 2022-11-02

Family

ID=77771154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21770985.6A Withdrawn EP4006942A4 (de) 2020-03-19 2021-01-27 Zubehörvorrichtung für ein elektrisches gerät, elektrisches gerät, an dem die zubehörvorrichtung befestigt werden kann, und elektrisches gerät mit der zubehörvorrichtung

Country Status (4)

Country Link
EP (1) EP4006942A4 (de)
JP (1) JP7231110B2 (de)
CN (1) CN114303216A (de)
WO (1) WO2021186905A1 (de)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644441B2 (ja) * 1985-11-25 1994-06-08 株式会社日立製作所 電磁接触器
JPH01176984U (de) * 1988-06-02 1989-12-18
KR200402430Y1 (ko) * 2005-09-01 2005-11-30 엘에스산전 주식회사 서지흡수장치를 갖는 전자접촉기
JP6922390B2 (ja) * 2017-05-01 2021-08-18 富士電機機器制御株式会社 電気機器の連結ユニット及びそれを備える電磁接触器、熱動形過負荷継電器、電磁開閉器
JP6566054B2 (ja) * 2018-01-29 2019-08-28 富士電機機器制御株式会社 電気機器の接続構造
JP6777114B2 (ja) * 2018-04-20 2020-10-28 富士電機機器制御株式会社 電気機器の接続端子構造
JP6638759B2 (ja) * 2018-05-09 2020-01-29 富士電機機器制御株式会社 電気機器の接続構造

Also Published As

Publication number Publication date
EP4006942A4 (de) 2022-11-02
JP7231110B2 (ja) 2023-03-01
JPWO2021186905A1 (de) 2021-09-23
CN114303216A (zh) 2022-04-08
WO2021186905A1 (ja) 2021-09-23

Similar Documents

Publication Publication Date Title
US7474182B2 (en) Contactor with connector module for control of the solenoid mechanism
EP1309036A1 (de) Drahtverbinder
JP6220547B2 (ja) バスバモジュール
JP2012129206A (ja) 改善されたコンタクトばねを備えるリレー
JP5947972B2 (ja) 電子部品の組付構造及び電子部品
JP2012109039A (ja) 端子接続構造
WO2014171340A1 (ja) 電子部品及び電子部品の組付構造
WO2014168068A1 (ja) 電子部品の組付構造及び電子部品
EP4006942A1 (de) Zubehörvorrichtung für ein elektrisches gerät, elektrisches gerät, an dem die zubehörvorrichtung befestigt werden kann, und elektrisches gerät mit der zubehörvorrichtung
US10498060B2 (en) Substrate connection structure
US10256556B2 (en) Electrical connector
JP5513951B2 (ja) 部品付きホルダの取付構造
US11186238B2 (en) Electronic module
JP6597822B2 (ja) 電気機器の接続構造
JP2018190574A (ja) 電気機器の連結ユニット及びそれを備える電磁接触器、熱動形過負荷継電器、電磁開閉器
JP3997664B2 (ja) 回路しゃ断器
JP6638759B2 (ja) 電気機器の接続構造
JP6565748B2 (ja) 接続モジュール及びこれを使用したコンビネーションスタータ
JP5197555B2 (ja) 配線用電気機器
CN110931990B (zh) 电气设备的连接结构
JP4412147B2 (ja) 電気部品装置
JP5107004B2 (ja) 合体コネクタ
JP4856522B2 (ja) 回路遮断器
JP7437665B2 (ja) 端子装置及び開閉器
JP7211843B2 (ja) バスバの固定構造、及び、電気接続箱

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220228

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

A4 Supplementary search report drawn up and despatched

Effective date: 20220929

RIC1 Information provided on ipc code assigned before grant

Ipc: H01H 50/04 20060101AFI20220923BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20240514