JP2000164096A - Relay unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a relay unit capable of setting freely the shape and size of an operation handle without modifying an actuator lever of a latching relay installed internally or influencing the operation of the latching relay. SOLUTION: An operation handle 3 is protrusively installed rigidly in the center of the oversurface of an engaging member 20 made of a synthetic resin in the form of flat plate for moving in cooperation an actuator lever 38 of a latching relay upon being engaged with the lever 38. The engaging member 20 is protrusively furnished with engaging projections 21, 21 corresponding to the forefront of the lever 38 at the two ends of the under-surface about the lever moving directions, and resilient legs 22... are protrusively aside installed rigidly at the two ends of each side face about the direction perpendicular to the moving direction. The resilient legs 22... can deflect freely with their resilience, and when the operation handle 3 is out of operation, the engaging member 20 is held in the center position so that the handle 3 is put in the neutral position, and the projections 21 are separated from the lever 38.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay unit having a built-in latching relay (polarized relay).

[0002]

2. Description of the Related Art A relay unit having a built-in magnetic holding type latching relay using a permanent magnet and having a terminal function such as remote control is disclosed in Japanese Patent Application Laid-Open No. 9-55988. I have. In addition, this relay unit drives a built-in latching relay by remote control to open and close a main contact to turn on / off a load. By using a latching relay, it is only necessary to flow a drive current only at the time of reversing operation, Power consumption can be reduced.

FIG. 14 is an exploded perspective view of another conventional relay unit incorporating a magnetic holding type latching relay (polarized relay) 25 and having a terminal function for remote control. In this example, one single-cut type latching relay 25 is incorporated. As shown in the figure, the unit main body 10 has a unit size (one BAK module unit) specified in the provisions of the distribution-type common-use circuit breaker. And is divided in the direction of the smallest dimension (hereinafter referred to as the width direction) of the three orthogonal dimensions, and the body 11 on one side and the first cover 12 on the other side are divided into Cover
Surface (front) with the body 12 and the body 11 abutted
Cover 13 for covering the opening formed on the side
The body 11 and the cover 12 are joined together using four caulking studs 15. The caulking rivet 15 is caulked after being inserted into the through holes 32 formed in the body 11 and the cover 12.

As shown in FIG. 15, a pair of signal line connection terminals 16 for connecting an external signal line is exposed at one end of the unit body 10 in the longitudinal direction (the left-right direction in FIG. 15B). The other end is provided such that two load connection terminals 19 to which a load and a power supply are connected are exposed. The signal line connection terminal 16 and the load connection terminal 19 are screw terminals, respectively, and the terminal screws 3 screwed to the terminal plates 33a, 33b and the terminal plates 33a, 33b, respectively.
4 is provided. An insulating partition 17 ′ is arranged between the pair of signal line connection terminals 16, and the pair of load connection terminals 1
9 are also separated by an insulating partition 17.
As shown in FIG. 15A, the two load connection terminals 19 are arranged with a step in the vertical direction.

[0005] The cover 13 is provided at one end with an attachment portion for attaching the signal line connection terminals 16, 16, and an opening window formed from the central portion on the front side of the body 11 and the cover 12 to one end. The signal line connection terminals 16 and 16 attached to the attachment portion 35 and attached to the attachment portion are formed between the side wall at one end of the body 11 and the side wall at one end of the cover 12 and are opened to the outside of the unit body 10. In addition, it is arranged in the terminal arrangement portion 14 which can communicate with the inside of the unit body 10.

A body 11 is provided at the other end of the unit body 10.
A terminal arrangement is formed between the side wall at the other end of the cover 12 and the side wall at the other end of the cover 12, and is open to the outside of the unit body 10 and partitions the space communicated with the inside of the unit body 10 into right and left by the partition 17. A mounting portion 18 is provided between the inner surface of the other end side wall of the body 11 of the terminal storage portion 18 and the opposing surface of the partition 17, the inner surface of the other end side wall of the cover 12, and the partition 1.
The load connection terminals 19 are separated from the opposing surface 7. The partition 17 is composed of the body 11 and the cover 1
2 is attached.

[0007] Inside the unit body 10, a latching relay 25 and a terminal processing block (not shown) are provided. The latching relay 25 has an output terminal connected to the terminal plate 33b of the load connection terminal 19 via a connection wire 36 made of a flat braided copper wire on both side surfaces in a direction orthogonal to the width direction and the longitudinal direction of the unit body 10. A terminal piece 37 is provided. Terminal strip 37 is latching relay 25
Is connected to the main switching contact provided in the contact block 25B. The terminal strip 37 is bent in a direction extending in a direction orthogonal to the division surface of the body 11 and the cover 12 and in a direction parallel to the division surface in a state where the latching relay 25 is incorporated in the unit body 10. It is formed in a substantially L shape having One end of the connection line 36 is connected to the terminal plate 33b by soldering or welding, and the other end is swaged to the terminal piece 37 by the swaging plate 41. The connection is made by soldering or welding the swaging plate 41 to the terminal piece 37. Is done.

The terminal processing block is a latching relay 25.
And a transmission / control circuit board 31 on which a relay drive circuit and a terminal circuit section of the latching relay 25 are mounted, and dip switches 27a and
27b, and a circuit board 30 on which the circuit board 3 is mounted.
1 and a circuit board 30 are connected to a terminal group 28 protruding from an end of the circuit board 31 so as to be parallel to the board surface of the circuit board 31.
0 are inserted into a group of insertion holes 29 opened on the surface of the substrate 0, and are electrically connected to each other and connected at right angles. Here, the circuit board 30 is arranged on the upper side in FIG. 16 in the unit main body 10, and the circuit board 31 is arranged so as to be located at a position near the signal line connection terminal 16. The control terminal connected to the reset coil or the set coil is fixed to the circuit board 31 by soldering, so that the latching relay 25 and the circuit unit come into close contact with each other. Here, opening windows 45a and 45b formed in the cover 13 attached to the opening windows 35 on the front surface (front surface) of the unit main body 10 are formed at portions corresponding to the dip switches 27a and 27b in the unit main body 10. DIP switch 27 mounted on substrate 30
The operation units a and 27b are exposed on the outer surface side of the unit body 10. An operating lever 38 which reciprocates in conjunction with opening and closing of the main opening and closing contact is provided on the latching relay 25.
The operation lever 38 not only moves with the opening and closing of the main opening / closing contact, but also opens and closes when the operating lever 38 is moved. The tip of the operation lever 38 is a window hole 40a of the seat 40.
And is exposed to the outside through an opening window 39 provided in the cover 13. By operating the operation lever 38, the main switching contact of the latching relay 25 can be forcibly opened and closed. Since the latching relay 25 is provided with the operation lever 38 that can open and close the main switching contact by manual operation, a load connected to the main switching contact even when the power is not supplied to the remote monitoring control system and the system is down. Can be turned on and off.

The windows 35 and 45a, 4 of the cover 13
A nameplate 46 is attached to the surface of the body 5b, a nameplate 49 is attached to the outer surface of the body 11, and a nameplate 50 is attached to the outer surface of the cover 12. Opening windows 35 and 45 are attached to the nameplate 46.
Windows 46a to 46c corresponding to a and 45b are formed.

When the latching relay 25 attached to the circuit board 31 is fixed at a fixed position in the unit body 10, the buffering spring 42 made of a leaf spring is
The latching relay 25 is elastically fixed by being disposed between the lower surface of the unit 5 and the rib 47 of the unit body 10.

[0011]

By the way, in the conventional relay unit, the operation lever 38 of the built-in latching relay 25 is exposed to the outside of the unit body 10 as shown in FIG. 16, and the operation lever 38 is directly operated manually from the outside. Due to the configuration, there is a problem that the position of the latching relay 25 housed in the unit body 10 is determined by the position of the operation lever 38. Further, since the operation lever 38 is directly connected to the mechanism of the latching relay 25, the shape of the operation lever cannot be changed, and when the operation handle of another part is connected to the operation lever, the operation of the latching relay is not performed. Had the problem of affecting

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to change the operation lever of the built-in latching relay and to affect the operation of the latching relay. Another object of the present invention is to provide a relay unit capable of freely setting the shape and size of an operation handle.

It is still another object of the present invention to provide a relay unit capable of displaying an operating state of a latching relay.

[0014]

To achieve the above object, according to the first aspect of the present invention, a unit main body and a magnetic holding type latching relay housed in the unit main body are provided. The contact opening / closing drive mechanism is moved from the off or on position to the other position in conjunction with the on / off operation of the contact opening / closing drive mechanism, and is moved from the off position or the on position to the other position by external force to turn the contact opening / closing drive mechanism on or off. The unit has an operation lever for turning it off, and the unit body is equipped with an operation handle that engages with the operation lever from outside the unit body to operate the operation lever.The operation handle is always held at the neutral position by spring bias. When operated from the neutral position in the on-operation direction or the off-operation direction, the operation lever engages with the operation lever after moving a predetermined distance. An operating member that moves an operating lever to an on position or an off position, and is provided with an engaging body that is separated from the operating lever and released when the operating handle starts moving to a neutral position by a spring bias when the operating force is released. It is.

According to a second aspect of the present invention, in the first aspect of the present invention, the engaging body has an operating handle protruding from the center of one surface and is provided at both ends of the other surface corresponding to the moving direction of the operating lever. Corresponding engaging projections are respectively protruded, and are held in the unit body movably horizontally by elastic legs protruding from both ends in the moving direction of both sides orthogonal to the moving direction. The operating body is held so that the operating handle is located at the neutral position in a state where the operating force is not applied to the operating handle, and when the operating force is applied to the operating handle, the engaging body is deformed to move the engaging body in the operating force direction, and the operating force is reduced. When released, it has an elastic function to move the engaging body so that the operating handle is in the neutral position, and the operating lever of the latching relay has the leading end engaged with the engaging body with the operating handle in the neutral position. Opposed spaced space relative force, the operating handle is operated engaging body, characterized in that the collision engagement with the engagement projections in the process of moving.

According to a third aspect of the present invention, in the first aspect of the present invention, the engaging body has an operating body protruding at the center of one surface and is provided at both ends of the other surface corresponding to the moving direction of the operating lever. Corresponding engaging projections are respectively protruded, and the shafts provided on both sides perpendicular to the direction of movement of the operation lever are rotatably supported by the unit body, and the shafts are operated without external force applied to the operating body A torsion spring that holds the engaging body so that the body is located at the neutral position is mounted, and the operating lever has a distal end that opens a space to both engaging projections of the engaging body with the operating handle in the neutral position. When the operating handle is operated and the engaging body rotates, the engaging body collides with the engaging protrusion of the engaging body.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, an operation display mark is provided on a part of the operation lever, and a display window through which the operation display mark can be visually recognized is provided on the unit body. It is.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments. (Embodiment 1) This embodiment is used for a relay unit constituting a terminal for remote control similarly to the above-mentioned conventional example, and a latching relay 25 is provided in a unit main body 10 as shown in FIG. The storage is arranged. FIG. 1 shows a schematic configuration, but the unit main body 10 is composed of a body 11, covers 12, 13 similarly to the conventional example shown in FIG. 14, and is mounted on a buffer spring 42 arranged at the bottom of the unit main body 10. The latching relay 25 is mounted.

Here, in the conventional example, an operation lever 38 movably protruding from the upper surface of the relay body of the latching relay 25 faces an opening window 39 opened in the cover 13 so that manual operation can be performed directly from the outside. In this embodiment, as shown in FIGS. 1 to 3, the latching relay 25 is opened from an opening window 39 opened in the cover 13.
The tip of the operation handle 3, which is a separate component, is exposed to be reciprocally movable from the inside so that the operation lever 38 of the latching relay 25 can be operated via the operation handle 3.

The operation handle 3 is provided with a latching relay 25.
Are integrally formed at the center of the upper surface of a flat synthetic resin engagement body 20 for engaging with and operating the operation lever 38. As shown in FIGS. 4A and 4B, the engagement body 20 is provided on both lower end portions corresponding to the moving direction of the operation lever 38 with the engagement protrusions 2 corresponding to the tip of the operation lever 38.
Elastic leg pieces 22 are integrally protruded laterally at both end portions of both sides orthogonal to the moving direction. A pair of elastic leg pieces 22, 22 protruding from the same side face are formed to expand outward in an eight-shape, and can be flexed freely by their elasticity.

Here, the cover 13 and the latching relay 25
A mounting portion 23 of the operation handle 3 formed by the cover 12 and a wall protruding from the inner side surface of the body 11 is formed between the mounting portion 23 and the upper surface of the mounting portion 23. The elastic leg pieces 22 are placed and their ends are engaged with the four corners inside the unit body 10. The opening area of the central opening 24 is larger than the area of the engaging body 20, and the distal end of the operating lever 38 of the latching relay 25 is inserted between the engaging projections 21 and 21 at both ends of the engaging body 20 through the central opening 24. Have been. The distance between the engaging projections 21 and 21 is set to be larger than the distance from the outer end face when the operation lever 38 is in the off position to the outer end face when the operation lever 38 is in the on position. Midpoint of off position,
That is, when the operating lever 38 is at the neutral position, the engaging projection 21 of the engaging body 20 is not touched at any position.

In the state where no operating force is applied to the operating handle 3, no force is applied to the elastic leg pieces 22 extending in four directions, so that the engaging body 20 is not elastically deformed as shown in FIG. It is held at the center of the center opening 24 of the mounting portion 23.

FIG. 6A shows a state in which the contact opening / closing mechanism of the latching relay 25 is in the ON state, and the operating lever 38 interlocked therewith.
Is held at the ON position, but since the operating force is not applied to the operation handle 3, the engaging body 20 moves the elastic leg pieces 22...
And the operation lever 38 is at a position separated from the engagement protrusion 21. Therefore, in this state, when the contact opening / closing mechanism of the latching relay 25 is driven by remote control to reverse the state, there is no influence due to the presence of the operation handle 3.

Next, when the main opening / closing contact of the latching relay 25 is reversed from the on state to the off state, the operating force is moved by manually operating the operating handle 3 to the left in FIG. The elastic leg piece 22 on the direction side, that is, the left elastic leg piece 22 is elastically deformed and bent, and the engaging body 20 moves to the left. By this movement, the engagement projection 21 on the right side collides with the tip of the operation lever 38 and pushes the operation lever 38 to the off position. This state is shown in FIG.
This is the state shown in FIG.

The turning-off operation causes the latching relay 25
After the contact opening / closing mechanism is turned over and the operation state is maintained, when the operation force is released by releasing the hand from the operation handle 3, the elastically deformed elastic leg piece 22 returns to the original state. Therefore, the engagement body 20 moves to the center and returns the operation handle 3 to the neutral position. This state is the state shown in FIG.

In the state shown in FIG. 6C, the operation lever 38 of the latching relay 25 is held at the off position, and the engaging body 20 is also held at the center position where the operation handle 3 is in the neutral position. 38 and the engaging projection 21 are located at a distance from each other. Therefore, in this state, when the contact opening / closing mechanism of the latching relay 25 is driven by remote control to reverse the state, there is no influence due to the presence of the operation handle 3.

When the main switching contact of the latching relay 25 shown in FIG.
When the operation handle 3 is moved by manually operating the operation handle 3 to the right in FIG. 6C, the elastic leg piece 22 on the operation force direction side, that is, the right elastic leg piece 22 is elastically deformed and bent.
0 moves to the right. Due to this movement, the engagement projection 21 on the left side collides with the tip of the operation lever 38 and pushes the operation lever 38 to the ON position. This state is the state shown in FIG.

The latching relay 25 is turned on by this ON operation.
After the contact opening / closing mechanism is turned over and the operation state is maintained, when the operation force is released by releasing the hand from the operation handle 3, the elastically deformed elastic leg piece 22 returns to the original state. Therefore, the engagement body 20 moves to the center and returns the operation handle 3 to the neutral position. This state is shown in FIG.
(Or (a)).

In the present embodiment, members having the same structures as those of the conventional example are denoted by the same reference numerals and symbols, and description thereof is omitted.

(Embodiment 2) In the first embodiment, the engagement body 20 is supported by the elastic leg pieces 22 so as to hold the operation handle 3 at the neutral position when no operation force is applied to the operation handle 3. However, in the present embodiment, as shown in FIG.
The shaft body 4 is rotatably supported by bearings (not shown) formed on both inner surfaces of the unit body 10 and torsion springs 5 mounted on the shaft bodies 4 on both sides, respectively.
As shown in the figure, the engagement body 20 is held in a horizontal state. In this state, the operation handle 3 at the center of the upper surface
Are in a vertical state, that is, in a neutral position.
FIGS. 8A and 8B are a top view and a side view showing the relationship between the torsion spring 5, the operation handle 3, and the engagement body 20. FIG.

The torsion spring 5 is mounted such that the central ring is fitted to the shaft 4 and both ends are locked to the inner wall of the unit body 10. Also, as shown in FIG. 9, one end is locked between a pair of ribs 6 and 6 provided on the side surface of the operation handle 3, and the other end is formed between ribs 6 ′ and 6 formed on the inner wall of the unit body 10. A structure that locks may be used.

When the operating force is not applied to the operating handle 3, the torsion spring 5 is not compressed, so that the engaging body 20 is held in a horizontal state as shown in FIG. Stand up to the neutral position.

FIG. 10A shows a latching relay 25.
This shows a state in which the contact opening / closing mechanism is turned on and the operating lever 38 interlocked with the contact opening / closing mechanism is held in the on position. However, since the operating force is not applied to the operating handle 3, the engaging body 20
Is held horizontally by the torsion spring 5, and the operation lever 38 is located at a position separated from the engagement protrusion 21. Therefore, in this state, when the contact opening / closing mechanism of the latching relay 25 is driven by remote control to reverse the state, there is no influence due to the presence of the operation handle 3.

Next, when the main open / close contact of the latching relay 25 is reversed from the on state to the off state, the operation handle 3 is manually operated so that the operation handle 3 is tilted rightward in FIG. The engaging body 20 rotates rightward while elastically deforming the legs of the spring 5. Due to this rotation, the engagement projection 21 on the right side collides with the tip of the operation lever 38 and pushes the operation lever 38 to the off position. This state is the state shown in FIG.

The off operation causes the latching relay 25
After the contact opening / closing mechanism is turned over and the operating state is maintained, when the operating force is released by removing the hand from the operating handle 3, the elastically deformed torsion spring 5 returns to the original state. Therefore, the engagement body 20 is pivotally returned to the horizontal state, and the operating handle 3 is made to stand up and return to the neutral position. This state is the state shown in FIG.

In the state shown in FIG. 10C, the operating lever 38 of the latching relay 25 is held at the off position,
Further, the engagement body 20 is held in a horizontal state and the operation handle 3
The operating lever 38 and the engaging projection 21 are located at a distance from each other in order to make the neutral position. Therefore, in this state, when the contact opening / closing mechanism of the latching relay 25 is driven by remote control to reverse the state, there is no influence due to the presence of the operation handle 3.

The latching relay 25 shown in FIG.
When the operation handle 3 is turned over from the off state to the on state by manually operating the operation handle 3 to the left in FIG. 10C, the left leg of the torsion spring 5 is elastically deformed. , The engagement body 20 rotates to the left. By this rotation, the engagement projection 21 on the left side collides with the tip of the operation lever 38 to push the operation lever 38 to the ON position. This state is shown in FIG.
This is the state shown in FIG.

The latching relay 25 is turned on by this on operation.
After the contact opening / closing mechanism is reversed and the operating state is maintained and the operating force is released by removing the hand from the operating handle 3, the torsion spring 5 that has been elastically deformed returns the engaging body 20 to the horizontal position. The operation handle 3 is returned to the state, and the operation handle 3 is made to stand up to the neutral position. This state is the state of FIG. 10E (or (a)).

In the present embodiment, members having the same configuration as those of the conventional example or the first embodiment have the same numbers,
The symbols are attached and the description is omitted. Third Embodiment In the first and second embodiments, since the operating handle 3 is normally held at the neutral position, the operating state of the latching relay 25 cannot be known from the outside. As shown in (c) to (c), the projection 7 is provided at the tip of the operating lever 38 of the latching relay 25, and the surface of the projection 7 on the cover 13 side is colored. As shown in FIGS. The cover 13 is provided with a display window 8 on which the position of the projection 7 can be visually recognized, so that the operating state of the latching relay 25 can be visually recognized from the outside.

The structure of the operation handle 3 may be the structure of any of the first and second embodiments. In the present embodiment, members having the same configurations as those of the conventional example or Embodiments 1 and 2 are denoted by the same reference numerals and symbols, and description thereof is omitted.

[0041]

According to the first aspect of the present invention, the unit body,
A latching relay of a magnetic holding type housed in the unit main body. The latching relay moves from the off or on position to the other position in conjunction with the on or off operation of the contact opening / closing drive mechanism, and receives external force. The unit has an operation lever that turns on or off the contact opening / closing drive mechanism by moving it from the off position or the on position to the other position.The unit main body engages with the operation lever from outside the unit main body to operate the operation lever. The operation handle is held at a neutral position by a constant spring bias, and when the operation handle is moved from the neutral position in an ON operation direction or an OFF operation direction, the operation handle is engaged with the operation lever after a predetermined distance. When the operating force is released, the operating lever is moved to the on position or the off position. When the dollar starts moving to the neutral position, an engaging body is provided that separates from the operating lever and disengages, so that the operating lever of the latching relay is not changed, and the operation is a separate part from the latching relay. The handle can be provided so as not to affect the operation of the latching relay, so that the location of the latching relay on the unit body becomes more free than before,
In addition, there is an effect that the degree of freedom of the size and structure of the operation handle, which is a manual operation unit, is increased.

According to a second aspect of the present invention, in the first aspect of the present invention, the engaging body has an operating handle protruding at the center of one surface and is provided at both ends of the other surface corresponding to the moving direction of the operating lever. Corresponding engaging projections are respectively protruded, and are held in the unit body movably horizontally by elastic legs protruding from both ends in the moving direction of both sides orthogonal to the moving direction. The operating body is held so that the operating handle is located at the neutral position in a state where the operating force is not applied to the operating handle, and when the operating force is applied to the operating handle, the engaging body is deformed to move the engaging body in the operating force direction, and the operating force is reduced. At the time of release, the engaging body is moved so that the operating handle is in the neutral position by elastic return, and the operating lever of the latching relay has its distal end with both engaging projections of the engaging body with the operating handle in the neutral position. Face arranged spaced relative to,
The latch engages with the engaging projection during the operation of the operating handle to move the engaging body. The sliding operating handle can operate the internal latching relay without affecting the operation of the latching relay. .

According to a third aspect of the present invention, in the first aspect of the present invention, the engaging body has an operating body protruding from the center of one surface and is provided at both ends of the other surface corresponding to the moving direction of the operating lever. Corresponding engaging projections are respectively protruded, and the shafts provided on both sides perpendicular to the direction of movement of the operation lever are rotatably supported by the unit body, and the shafts are operated without external force applied to the operating body A torsion spring that holds the engaging body so that the body is located at the neutral position is mounted, and the operating lever has a distal end that opens a space to both engaging projections of the engaging body with the operating handle in the neutral position. In the process of disposing and operating the operating handle to rotate the engaging body, it collides with and engages with the engaging projection of the engaging body, so that it does not affect the operation of the latching relay and can be operated by the rotating operating handle. Internal latching relay It can be manipulated.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, an operation display mark is provided on a part of the operation lever, and a display window through which the operation display mark can be visually recognized is provided on the unit body. The operating state of the internal latching relay is visible from outside the unit body.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a schematic configuration of a first embodiment of the present invention.

FIG. 2 is a schematic overall perspective view of the same.

FIG. 3 is a top view of the same.

FIG. 4A is a top view of an operation handle portion used in the above. (B) is a side view of the operation handle part used in the above.

FIG. 5 is an explanatory diagram of a main part of the above.

FIG. 6 is an operation explanatory view of the above.

FIG. 7 is a sectional view illustrating a schematic configuration of a second embodiment of the present invention.

FIG. 8A is a top view of an operation handle portion used in the above. (B) is a side view of the operation handle part used in the above.

FIG. 9 is an explanatory diagram of a main part of an example of another operation handle portion according to the embodiment.

FIG. 10 is an operation explanatory view of the above.

FIG. 11A is a top view of a latching relay used in Embodiment 3 of the present invention. (B) is a side view of the latching relay used in the above. (C) is a rear view of the latching relay used in the above.

FIG. 12 is a schematic overall perspective view of the same.

FIG. 13 is a top view of the same.

FIG. 14 is an exploded perspective view of the conventional example.

15A is a front view of the same, and FIG. 15B is a top view of the same. (C) is a side view of the same. (D) is a rear view of the same.

FIG. 16 is a side view showing a state where a cover that can be partially omitted is removed.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 operation handle 10 unit main body 11 body 12 cover 20 engagement body 21 engagement projection 22 elastic leg piece 25 latching relay 38 operation lever 39 opening window

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahiro Kutsuna 1048 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd. F-term (reference) 5G010 KF01 LB02 5G035 PA03

Claims (4)

[Claims] The present invention comprises a unit main body and a latching relay housed in the unit main body. The latching relay has another position from an off position or an on position in conjunction with an off operation or an on operation of a contact opening / closing drive mechanism. And an operation lever for turning off or on the contact opening / closing drive mechanism by moving the contact opening / closing drive mechanism from the off position or the on position to the other position with an external force. An operation handle for engaging and operating the operation lever is mounted. The operation handle is normally held at a neutral position, and when operated from the neutral position in an ON operation direction or an OFF operation direction, the operation handle moves by a predetermined distance. Later, when the operating lever is moved to the on position or the off position by engaging with the operating lever, and the operating force is released, the spring is released. A relay unit comprising an engaging member which is separated from the operating lever and released from engagement when the operating handle starts to move to a neutral position by biasing. The engaging body has an operating handle protruding at the center of one surface and engaging projections corresponding to the tip of the operating lever protruding at both ends of the other surface corresponding to the moving direction of the operating lever. The elastic legs are horizontally movably held in the unit body by the elastic legs protruding from both ends in the movement direction of both sides orthogonal to the direction, and the operation legs are neutral with no operation force applied to the operation legs The engaging body is held so that the operating body is positioned at the position, and the operating body is bent and deformed when an operating force is applied to the operating handle to move the engaging body in the direction of the operating force. When the operating force is released, the operating handle is in the neutral position. The operating lever of the latching relay has an elastic function to move the union, and the tip of the operating lever of the latching relay is opposed to the two engaging projections of the engaging body with the operating handle in the neutral position, and the operating lever is open. Relay unit according to claim 1, wherein the dollar is operated engaging body, characterized in that the collision engagement with the engagement projections in the process of moving. 3. The operating member has an operating body protruding from the center of one surface and engaging projections corresponding to the tip of the operating lever protruding from both ends of the other surface corresponding to the moving direction of the operating lever. Shafts provided on both sides perpendicular to the direction of movement of the lever are rotatably supported by the unit body, and the shaft is provided with an engaging body so that the operating body is located at the neutral position without external force being applied to the operating body. The torsion spring to be held is mounted, and the operating lever is disposed with the distal end of the operating handle facing the two engaging projections of the engaging body with the operating handle in the neutral position, and the operating handle is operated to release the engaging body. 2. The relay unit according to claim 1, wherein the relay unit collides with the engagement protrusion of the engagement body during the rotation. 4. The relay unit according to claim 1, wherein an operation display mark is provided on a part of the operation lever, and a display window through which the operation display mark can be visually recognized is provided in the unit body.