JP3475692B2 - Earth leakage relay - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth leakage relay that cuts off power supply to a load when a leakage current flows.

[0002]

2. Description of the Related Art A conventional earth leakage relay is operated by an earth leakage detection current by pushing up a movable frame engaged with the reset member by a spring force of a coil spring supporting a reset member to bring a movable contact into contact with a fixed contact. By pulling the movable frame with the plunger of the electromagnet device and removing it from the reset member,
The movable contact is separated from the fixed contact by the return operation of the movable contactor, thereby interrupting the electric leakage, and then the reset member is pressed by the coil spring to engage the movable frame with the reset member and push up the movable contactor. It makes contact with the fixed contacts (for example, Kaikaihei 7-27045).

When the earth leakage display is performed by this earth leakage relay,
It is conceivable that when the movable contact is forcibly opened from the fixed contact due to the leakage current flowing, the reset member moves in a direction projecting from the normal position to provide the leakage indication.

[0004]

However, since the reset switch for reclosing the movable contact to the fixed contact is further projected to perform the leakage display, there is a problem that it is confusing whether it is the leakage display or the normal state. The structure becomes complicated by providing another projecting member such as an earth leakage breaker.

Therefore, an object of the present invention is to provide an earth leakage relay which can easily distinguish between a normal state and an earth leakage state with a simple structure.

[0006]

According to another aspect of the present invention, there is provided an earth leakage relay comprising a base, a reset member supported by the base via an elastic body, and a guide portion attached to the base for guiding the reset member. A base that has a shaft support portion and holds a fixed contact, and a movable frame that has a display engagement portion and engages with the reset member detachably.
An electromagnet device that is excited by a leakage response current to separate the movable frame from the reset member, and a spring force that is supported by the movable frame and is weaker than the elastic body and opposite to the biasing direction of the reset member. The movable engagement member having a movable contact that contacts a fixed contact of the fixed contact in a state where the movable frame is engaged with the reset member, and the display engagement having a shaft portion pivotally supported by the shaft support portion. And a display member having an engaging piece that engages with the display section.

According to the earth leakage relay of the first aspect, the display member moves the shaft support portion as the movable frame moves between the position in the normal state and the position in the earth leakage state where the leakage current flows and the contacts are forcibly opened. Since it rotates around the center, it is possible to easily discriminate between the leakage state and the normal state depending on the position of the display unit.
In addition, it can be displayed simply by adding a display member,
The fixed contact, the reset member and the display member can be attached to the base with one base, the parts can be shared, and the structure is simplified.

According to a second aspect of the present invention, there is provided the earth leakage relay according to the first aspect, wherein the display engaging portion is an inclined long hole inclined with respect to a moving direction of the movable frame. According to the earth leakage relay of the second aspect, in addition to the effect of the first aspect, the rotation amount of the display member with respect to the movement amount of the movable frame is greater than that of the inclined elongated hole provided at right angles to the movement direction of the movable frame. Therefore, the distance between the state in which the display unit is positioned in the display window and the state in which the display unit is separated from the display window can be minimized, the space occupied by the display unit can be reduced, and the size can be reduced.

According to a third aspect of the present invention, in the earth leakage relay according to the second aspect, the base is provided on the coil frame of the electromagnet device.
The movable contact is attached to the coil frame. According to the earth leakage relay of the third aspect, in addition to the effect of the second aspect, the parts can be further shared and the assemblability is improved. According to a fourth aspect of the present invention, in the earth leakage relay according to the first aspect, the second aspect or the third aspect, the base is a zero-phase current transformer that detects an earth leakage detection current flowing between the pair of movable contacts, and the zero-phase current transformer. A printed circuit board on which the zero-phase current transformer is mounted such that the penetrating direction of the primary side of the current transformer is vertical, and on which an electronic component for amplifying the output of the zero-phase current transformer is mounted,
The zero-phase current transformer is formed by penetrating the base ends of a pair of movable contacts.

According to the earth leakage relay of claim 4, in addition to the effect of claim 1, claim 2 or claim 3, the zero-phase current transformation is performed as it is without connecting another member such as a lead wire to the movable contact. Since it penetrates the transformer, the work of penetrating the zero-phase current transformer becomes easy. The earth leakage relay according to claim 5 is the relay according to claim 4, wherein the base ends of the pair of movable contacts penetrate the printed board and are longer than the width of the movable contact between the movable contacts of the printed board. A long hole is formed.

According to the earth leakage relay of claim 5, claim 4
In addition to the above effect, insulation can be achieved between the base ends of the movable contacts on the pattern side of the printed circuit board, and the base ends of the movable contacts can be brought closer to each other, thus achieving compactness.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. That is, the earth leakage relay includes a cover 1, a base 2, a coil spring 3 that constitutes an elastic body, a reset member 4, an electromagnet device 5, a movable frame 6, a movable contact 7, and a display member 68. Have.

The cover 1 comprises a relatively shallow back cover 10 provided with a spring support protrusion 9 and a front cover 11 having a relatively high height, and the front cover 11 is fitted on the back cover 10. Form a locking recess 12 on the side surface of the back cover 10 (see FIG. 4),
When the locking claw 13 that locks in the locking recess 12 is formed on the inner surface of the front cover 11 and the front cover 11 is put on the back cover 10, the locking claw 13 locks in the locking recess 12 and the closed state is Retained. In addition, the printed circuit board 1 is attached to the back cover 10 of the cover 1.
4, a printed board holding portion 15 that abuts the periphery of the printed board 14 and holds the substantially central portion of the printed board 14 at a predetermined interval is provided on the inner peripheral surface in a stepped manner, and is formed in a straight line on the bottom surface. Further, a cylindrical printed circuit board support cylinder 16 is provided at a position requiring strong support, and the hole 3 of the printed circuit board 14 is provided on the top surface thereof.
A protrusion 17 that fits in 2 is provided. The front cover 11 has mounting pieces 18 projecting from both sides, a mounting hole 19 is formed in the mounting piece 18, a terminal exposed portion 20 is formed on one side of the upper surface, and member mounting holes 21 to 23 are formed on the adjacent side portions. Is formed. The split claw portion 64 of the test button 64 is retained and locked at the hole edge of the component mounting hole 21. The head 35 of the reset member 4 is inserted into and retracted from the component mounting hole 22, and a convex lens 77 is attached to the component mounting hole 23.

The base 2 has a printed circuit board 14 having an insertion hole 24 through which the spring support projection 9 is inserted, and a coil frame 25 having a base that also serves as a support for components is provided on the printed circuit board 14.
And is housed in the cover 1. The printed circuit board 14 covers a zero-phase current transformer 26 that detects an unbalanced current that flows between the pair of movable contacts 7, that is, a leakage detection current, and an electronic component 99 that amplifies the output of the zero-phase current transformer 26. 11 is mounted (see FIG. 4), and the back cover 10 side is provided with a conductive pattern. The zero-phase current transformer 26 has a hollow portion 26a.
Printed circuit board 14 is in the axial direction, that is, the penetrating direction on the primary side.
Is attached to the printed circuit board 14 so as to be perpendicular to, that is, in the thickness direction. The coil frame 25 has a cylindrical portion 25a at the center, and a component mounting portion 28 and a component mounting portion 29 that serves as a base are provided at both ends. Reference numerals 30 a to 30 d denote external connection terminals attached to the printed circuit board 14, and the terminal exposed portions 20 of the front cover 11 covered with the back cover 10.
Is exposed to. Reference numeral 31 is a test switch, the movable part of which is pushing up the test button 63, and when the test button 63 is pressed, the movable part comes into contact with the fixed part and causes an unbalanced current in the movable contact 7. ing. This printed circuit board 14 is inserted into the back cover 10 and, as shown in FIGS.
5 and the printed circuit board support cylinder 16. Further, when the front cover 11 covers the back cover 10, the lifting portion 33 provided on the inner surface of the front cover 11 restricts the floating of the printed circuit board 14.

The coil spring 3 is spring-supported through an insertion hole 24 formed in the printed circuit board 14 while the printed circuit board 14 is supported by the printed circuit board holding portion 15 housed in the back cover 10 and the printed circuit board support cylinder 16. Protrusion 9
Is projected from the printed board 14, one end of the coil spring 3 is fitted to the tip of the spring support protrusion 9, and the end of the coil spring 3 is in contact with the surface of the printed board 14.

The reset member 4 has a movable frame locking portion 40, is supported by the base 2 via the coil spring 3, and is moved between the reset position and the return position which is moved against the spring force of the coil spring 3. To move. The reset member 4 includes a main body 4a.
Between the columnar head portion 35 provided on the upper end of the main body 4a, the pair of guide pieces 36 protruding from the side portion of the main body 4a, the spring receiving projection 80 provided on the lower surface of the main body 4a, and the guide piece 36 of the main body 4a. The movable frame engaging portion 40 is provided on the side surface of the. The movable frame locking portion 40 has a locking surface facing upwards, which is opposite to the printed circuit board 14, and a guide inclined surface 40a is formed on the lower surface side. On the other hand, in order to slidably regulate the position of the reset member 4, a head insertion hole 33 that aligns with the component mounting hole 22 of the front cover 11 in the component mounting portion 29 that is the base of the coil frame 25.
And a vertical groove-shaped guide portion 34 that slidably engages the guide piece 36 is formed below the head insertion hole 31, and the upper end portion of the guide portion 34 serves as a position regulating portion of the guide piece 36. There is. Then, the upper end portion of the coil spring 3 is engaged with the spring receiving projection 80 to urge the reset member 4 upward so that the guide piece 36
Is engaged with the upper end of the guide portion 34, and at this time, the head portion 35 is inserted through the hole 33 and protrudes from the component mounting hole 22 of the front cover 11 to the outside.

The electromagnet device 5 is supported by the base 2 and excited by a leakage response current to separate the movable frame 6 from the reset member 4. The electromagnet device 5 has a plunger 38 which operates in a direction intersecting with the moving direction of the reset member 4. . This electromagnet device 5 includes a coil 42 in the cylindrical portion 25a at the center of the coil frame 25.
And the plunger 38 is inserted from the component mounting portion 28 side, and the return spring 46 is attached to the small diameter portion 38b at the rear end of the plunger 38.
And a rear end of the return spring 46 is supported by one end of an inverted U-shaped yoke 82 arranged on the side of the coil frame 25, and the plunger 38 is biased forward. In order to mount the yoke 82 on the coil frame 25, a notch 45 into which the one end 83 of the yoke 82 is inserted is formed in the component mounting part 29 of the coil frame 25, and a rectangular hole into which the other end 84 of the yoke 82 is inserted. 44 is formed on the coil frame 25. Further, the neck portion 38a at the tip of the plunger 38 is connected to the other end portion 8 of the yoke 82.
4, the notch 84a is formed in the other end 84, and the base side of the neck 38a is locked to the edge of the notch 84a to restrict the amount of protrusion of the plunger 38, whereby the return spring 46 causes the plunger 38 to move. It is in the return position. Further, the coil 42 is connected to the secondary side of the zero-phase current transformer 26, which is a means for detecting an unbalanced current, via an electronic component forming an amplifier 99 mounted on the printed board 14. Therefore, when an unbalanced current flows through the primary side of the zero-phase current transformer 26, a leakage detection current for detecting leakage is generated on the secondary side, which is amplified by the amplifier 99 and is used as a leakage response current in the coil 4.
2 is energized, the plunger 38 is attracted against the return spring 46, and the tip of the plunger 38 is retracted. A mounting protrusion 57 is provided on the lower surface of the component mounting portion 28 of the coil frame 25, and is fitted into a mounting hole 58 formed in the printed circuit board 14 to fix the coil frame 25 to the printed circuit board 14.

The movable frame 6 has a display engaging portion (70) and engages with the reset member 4 in a disengageable manner. The movable frame 6 is supported by the tip of a plunger 38 so as to be movable in the moving direction of the reset member 4, and when the plunger 38 is in the returning state, the reset member 4 is pressed from the returning position against the coil spring 3 to move the movable frame. The stopper 40 has a receiving portion 47 on which the receiving portion 4 is hooked, and the operation of the plunger 38 causes the receiving portion 4 to move.
7 is unlocked. The movable frame 6 of the embodiment has a receiving portion 47 in the central portion, and a recessed portion 6a having a lower surface opening for accommodating a head portion 38b at the tip of the plunger 38 in a vertically movable manner is formed below the receiving portion 47, and an electromagnet is formed. Plunger 38 on the device 5 side
A notch (not shown) is formed to pass through the neck portion 38a. Therefore, when the head portion 38b is inserted into the recess 49 so that the neck portion 38a of the plunger 38 passes through the notch, the movable frame 6 can move in the vertical direction, but the movement direction of the plunger 38 can follow the movement of the plunger 38. Becomes
The receiving portion 47 has an inclined surface on the lower surface, and a guide inclined surface 47a that slidably contacts the guide inclined surface 40a of the movable frame locking portion 40 is formed on the upper surface side. Further, the display engaging portion is the movable frame 6
The slanted long hole 70 is formed obliquely to the horizontal.

The movable contact 7 is supported by the movable frame 6 and is weaker than the coil spring 3 and has a spring force in the direction opposite to the biasing direction of the reset member 4, so that the movable frame 6 engages with the reset member 4. The movable contact 50 that contacts the fixed contact 8 of the fixed contact 55 in this state is provided. A base portion of the movable contactor 7 is supported by the base 2, and a tip portion of the movable contactor 7 engages with the movable frame 25 to move the movable frame 25.
The movable contact 50, which is pushed up by the movement of the reset member 4 in the returning direction and is oriented in the pushing direction, is provided at the tip portion. One of the pair of movable contacts 7 is in the shape of a strip plate and is punched so that the tip end side is bent into a substantially Z shape.
The base end side is bent at a substantially right angle in the plate thickness direction. The other movable contactor 7 is also in the shape of a strip plate, but is punched out so that the whole is substantially J-shaped and the tip side is substantially Z-shaped in the direction opposite to the one movable contactor 7 described above, and the base end side is formed at a substantially right angle. It is bent in the thickness direction. A hole 51 is formed on the base end side of the pair of movable contacts 7, and the hole 51 is fitted and fixed to the projection 46 formed on the component mounting portion 28 of the coil frame 25. Further, the movable contactor pressing portion 48 of the movable frame 25 is closer to the tip end portion than to the substantially Z-shaped punched portion of the movable contactor 7.
, And the movable contact 50 is fixed to the tip side thereof. On the other hand, the end of the movable contact 7 on the base end side is the zero-phase current transformer 2
6, the through hole (not shown) of the printed circuit board 14 is passed through, and the cut-out prevention piece 52 cut and raised at the end of the movable contact 7 is locked as shown in FIG. Soldered to the conductive pattern on the back side. Therefore,
The current flowing through the movable contact 7 becomes the primary side of the zero-phase current transformer. The movable contact 7 is connected to the external connection terminals 30a and 30b via a conductive pattern.

In the printed board 14, a long hole 89 longer than the width of the movable contact 7 is formed in the printed board 14 between the base ends of the pair of movable contacts 7 (see FIG. 4).
The insulation of is secured. The fixed contact 55 is formed in a substantially inverted L shape, and the fixed contact 8 is fixed to the horizontal upper piece. Recessed grooves 56 are formed on the lower surfaces of both sides of the component mounting portion 29 constituting the base of the coil frame 25, and grooves 56a for inserting both sides of the upper piece of the fixed contact 55 are formed on the inner side surface of the recessed groove 56 (see FIG. 3), the fixed contact 8 is located in the groove 56.

Here, the base has the guide portion 34 attached to the base 1 for guiding the reset member 4 and the shaft support portion 93 to hold the fixed contact 55. The lower end of the fixed contact 55 is the printed circuit board 1
4 is attached and secured by a retaining piece 90 which is cut and raised at the lower end and penetrated through the through hole 4 and is soldered to a conductive pattern, and the external terminal 30 is provided through the conductive pattern.
c, 30d. And this fixed contact 5
Reference numeral 5 serves to fix the coil frame 25 together with the projection 57 of the coil frame 25. As described above, in the coil frame 25, the yoke 82 is pressed by the pressing projections 91 on the inner surface of the front cover 11 (FIG. 3), and the component mounting portion 29 is pressed by the inner surface of the front cover 11 to cover the front cover 11 with the back cover. By fixing it to 10, the back cover 10 and the front cover 11
The printed circuit board 14 and the coil frame 25 are sandwiched between and. Reference numeral 59 is a retaining claw of the fixed contact 55 that engages with the groove 56a of the concave groove 56.

The display member 68 has a shaft portion 69 that is pivotally supported by a shaft support portion 93, an engaging piece 71 that engages with an inclined elongated hole 70 that is a display engaging portion, and a display portion 72. Have. In the embodiment, the shaft part 69 provided in the middle rotates between the shaft support part 93 formed by cutting out in a substantially semi-cylindrical shape at the tip of the shaft support part 92 provided in the component mounting part 29 as the base and the printed circuit board 14. An engaging piece 71, which is freely sandwiched and supported and is provided on one end side, engages with an inclined long hole 70 formed obliquely with respect to the horizontal in the movable frame 6, and a display portion 72 provided on the opposite end portion is a front cover. It is opposed to the component mounting hole 23 which is the display hole of 11.

The operation of the earth leakage relay will be described with reference to FIG. FIG. 6A shows a state in which the receiving portion 47 of the movable frame 6 is locked to the movable frame locking portion 41 of the reset member 4, and the movable contact 7 is pushed up and moved by the spring force of the coil spring 3. The contact 50 is in contact with the fixed contact 8. Therefore, the external connection terminals 30a and 30b and the external connection terminal 30
When there is no leakage current between c and 30d, a balanced current flows between the pair of movable contacts 7, so that no leakage response current is induced on the secondary side of the zero-phase current transformer 26. When there is a leakage current, an unbalanced current flows through the movable contact 7 and a leakage response current is induced as a detection current on the secondary side of the zero-phase current transformer 26, which is amplified by an amplifier and an exciting current flows through the coil 42. . Therefore, the plunger 38 is sucked and moves backward as shown by the arrow in FIG. 6A, and the receiving portion 47 is disengaged from the movable frame locking portion 41. As a result, the movable frame 6 is guided by the head 38b of the plunger 38 to move downward due to the spring force of the movable contactor 7, and the movable contact 50 separates from the fixed contact 8 as shown in FIG. 6B. . As a result, the current between the external connection terminals 30a, 30b and the external connection terminals 30c, 30d is stopped and the leakage is interrupted. When the excitation current stops flowing through the coil 42 due to the stop of this current, the plunger 38
Is returned by the return spring 46, as shown in FIG. 6 (c). In this state, when the reset member 4 is compressed to press the coil spring 3 and moved to the reset position, the movable frame locking portion 40 and the receiving portion 47 slide along the guide inclined surfaces 40a and 47a to lock the movable frame. When the portion 40 engages with the receiving portion 47 and the pressure of the reset member 4 is released, the movable frame 25 is pulled up by the returning action of the coil spring 3, the movable contactor 7 is pushed up accordingly, and the movable contact 50 is fixed. Contact with, Figure 6
The state of (a) reset is completed.

Further, since the engaging piece 71 moves in conjunction with the above-mentioned operation of the movable frame 25, the contact indicating member 68 is attached to the shaft portion 69.
Is rotated about the fulcrum, the display portion 72 is positioned below the component mounting hole 23 as shown in FIG.
When the movable contact 50 moves upward so that the movable contact 50 comes into contact with the movable member 50, the display member 68 rotates and the display portion 72 separates from the display window 23.

According to this embodiment, the display member 68 is pivotally supported by the display member 68 as the movable frame 6 moves between the position in the normal state and the position in the leakage state where the leakage current flows and the contacts are forcibly opened. Therefore, it is possible to easily distinguish between the electric leakage state and the normal state depending on the position of the display unit 72. Further, the display can be made only by adding the display member 68, and the fixed contact 55, the reset member 4 and the display member 68 can be attached to the base by one base, and the parts can be shared and the structure is simplified. .

Further, since the display engaging portion is the inclined elongated hole 70 which is inclined with respect to the moving direction of the movable frame 6, the inclined elongated hole 70 is formed.
Since the rotation amount of the display member 68 with respect to the movement amount of the movable frame 6 can be reduced as compared with the case where the display frame is provided at right angles to the movement direction of the movable frame 6, it is possible to display the state where the display unit 72 is positioned in the display window. The distance from the window can be minimized, the space occupied by the display unit can be reduced, and the size can be reduced.

Further, since the base is provided on the coil frame 25 of the electromagnet device 5 and the movable contact 7 is attached to the coil frame 25, the parts can be made more common and the assemblability is improved. Further, the base 2 includes a zero-phase current transformer 26 that detects a leakage detection current flowing between the pair of movable contacts 7, and the zero-phase current transformer 2
Zero-phase current transformer 2 so that the penetrating direction on the primary side of 6 is vertical
6 has the printed circuit board 14 on which the electronic components for amplifying the output of the zero-phase current transformer 26 are mounted, and the zero-phase current transformer 26 penetrates the base end side of the pair of movable contacts 7. Since the movable contactor 7 is directly passed through the zero-phase current transformer 26 without connecting another member such as a lead wire, the work of penetrating the zero-phase current transformer 26 is facilitated.

Further, since the base ends of the pair of movable contacts 7 penetrate the printed circuit board 14 and the elongated holes 89 longer than the width of the movable contact 7 are formed between the movable contacts 7 of the printed circuit board 14, the printed circuit board 14 is formed. Since the base ends of the movable contacts 7 on the pattern side can be insulated, the base ends of the movable contacts 7 can be brought close to each other, and the size can be reduced.

[0029]

According to the earth leakage relay of the first aspect of the present invention, as the movable frame moves between the position in the normal state and the position in the earth leakage state in which the leakage current flows and the electrodes are forcibly opened, the display member moves axially. Since it rotates around the branch portion, it is possible to easily discriminate between the leakage state and the normal state depending on the position of the display portion. In addition, the display can be performed only by adding the display member, and the fixed contact, the reset member, and the display member can be attached to the base with one base, so that the parts can be shared and the structure is simplified.

According to the earth leakage relay of claim 2, claim 1
In addition to the effect of, the rotation amount of the display member with respect to the movement amount of the movable frame can be reduced as compared to the case where the slanted elongated hole is provided at a right angle to the movement direction of the movable frame. The distance between the open state and the state away from the display window can be minimized, the space occupied by the display unit can be reduced, and the size can be reduced.

According to the earth leakage relay of claim 3, claim 2
In addition to the effect of, the parts can be shared and the assemblability is improved. According to the earth leakage relay of claim 4, in addition to the effect of claim 1, claim 2 or claim 3, the movable contact is directly connected to the zero-phase current transformer without connecting another member such as a lead wire. Therefore, the work of penetrating the zero-phase current transformer becomes easy.

According to the earth leakage relay of claim 5, claim 4
In addition to the above effect, insulation can be achieved between the base ends of the movable contacts on the pattern side of the printed circuit board, and the base ends of the movable contacts can be brought closer to each other, thus achieving compactness.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a partially enlarged view thereof.

FIG. 3 is a sectional view of an assembled state.

FIG. 4 is a plan view with a front cover removed.

FIG. 5 is a cross-sectional view showing a state where movable contacts are separated.

FIG. 6 is an explanatory diagram illustrating an operation of an earth leakage relay.

[Explanation of symbols]

1 cover 2 base 3 coil spring 4 Reset member 5 Electromagnet device 6 movable frame 7 Movable contact 8 fixed contacts 9 Spring support protrusion 14 Printed circuit board 15 Printed circuit board holder 24 insertion holes Coil frame with 25 bases 26 Zero-phase current transformer 29 Parts mounting part to be the base 34 Guide 38 Plunger 40 Movable frame locking part 47 Receiver 50 movable contacts 55 Fixed contact 68 Display member 69 Shaft 70 Inclined long hole which is a display engaging portion 71 engagement piece 72 display 89 long hole 93 Shaft support

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kosei Kimura 1 564, Handa, Tsu-shi, Mie Prefecture Mie Metal Industry Co., Ltd. (56) References Areas (Int.Cl. ⁷ , DB name) H01H 83/02

Claims (5)

(57) [Claims] 1. A fixed contactor having a base, a reset member supported by the base via an elastic body, a guide portion attached to the base for guiding the reset member, and a shaft support portion. A base that is held, a movable frame that has a display engaging portion and that is engageably and disengageably engaged with the reset member, and an electromagnet device that is excited by a leakage response current and that disengages the movable frame from the reset member. A fixed contact of the fixed contact in a state in which the movable frame is supported by the movable frame and is weaker than the elastic body and has a spring force in a direction opposite to the biasing direction of the reset member and the movable frame is engaged with the reset member. A movable contact having a movable contact that contacts with the display member; and a display member having an engaging piece that has a shaft portion axially supported by the shaft supporting portion and that engages with the display engaging portion, and a display member that further has a display portion. Leakage relay equipped. 2. The earth leakage relay according to claim 1, wherein the display engagement portion is an inclined elongated hole inclined with respect to the moving direction of the movable frame. 3. The earth leakage relay according to claim 2, wherein the base is provided on a coil frame of the electromagnet device, and the movable contact is attached to the coil frame. 4. The base is arranged such that a zero-phase current transformer that detects an electric leakage detection current flowing between a pair of the movable contacts and a penetration direction of a primary side of the zero-phase current transformer are perpendicular to each other. Having a printed circuit board on which the zero-phase current transformer is mounted and on which electronic components for amplifying the output of the zero-phase current transformer are mounted,
The earth leakage relay according to claim 1, claim 2 or claim 3, wherein the zero-phase current transformer has a base end side of a pair of movable contacts penetrating therethrough. 5. The elongated holes longer than the width of the movable contact are formed between the movable contacts of the printed board by penetrating the base ends of the pair of movable contacts into the printed board. Leakage relay described.