JPS6059693B2 - time-limited relay - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a motor-type return type time-limited relay.

Conventionally, this type of time-limited relay has been used for time-limited setting, u-low-゛), rl-lLctc,-
1,,, Warning ↓-Ryu ιV, IE4, A When the rolling wheel rotates at the zero position due to the rotational force from the synchronous motor being transmitted through the clutch mechanism interlocked with the movable iron piece of the electromagnet, the time limit card There is a device that opens and closes the time-limiting contact by rotating slightly in conjunction with the cam portion of the driven gear.

However, in this case, as shown in FIG.
The movable iron piece 15 is fixed on the frame by tightening, and the return position of the movable iron piece 15 is regulated by coming into contact with the support column 6. However, the operating stroke angle θ remains unchanged even if the mounting position of the electromagnet 10 is slightly moved in the direction of the arrow in the figure. This has the disadvantage that the operating voltage fluctuates, and it is difficult to finely adjust the mounting position of such an electromagnet. The present invention has been made in view of the above-mentioned drawbacks, and its purpose is to reliably position the mounting position of the electromagnet with respect to the fixed return stopper of the movable iron piece, and to maintain a constant operating voltage of the electromagnet. Our purpose is to provide relays.

- The present invention will be explained below with reference to the accompanying drawings.

1 to 5 show a time-limited relay according to the present invention as a self-resetting type, which schematically includes a frame 1, an electromagnet 10, a contact drive section 30, a clutch mechanism 45, and a contact mechanism 5.
0, Warren motor 7.5, base 85, case 9
0 and the time-limited setting device 95 attached to the top surface of the case 90.
It is composed of. The frame 1 is made by outsert-molding resin onto a metal plate, and a printed circuit board 9 holding an indicator lamp 8 is installed on the side of the mounting base 2.

An electromagnet 10 has a coil 1 attached to an iron core 12 fixed to an iron core frame 11.
A movable iron piece 15 is attached to the tip of the iron core frame 11 so as to be rotatable and a return force is applied by a return spring 16. Specifically, as shown in FIG. 13, a projecting piece 11c having a reference surface 11d for positioning is provided on the same plane as a reference surface 11b which hinges and supports the movable iron piece 15 at the lower end of the iron core frame 11. , the projecting piece 11c of the iron core frame 11 is placed on the mounting base 2 of the frame 1.
A positioning hole 5 into which the movable iron piece 15 can be inserted is provided in a protruding manner, and a column 6 is provided in a protruding manner to function as a return stopper for the movable iron piece 15. This electromagnet 10 is inserted into the iron core frame 1 in a state in which the projecting piece 11c of the iron core frame 11 is thrust into engagement with the positioning hole 5.
It is fixed by tightening screws 17, 17 from the side pieces 11a of 1. At this time, the electromagnet 10 is placed on the positioning reference surface 1 on the same plane as the hinge reference surface 11b of the movable iron piece 15.
1d engages with the edge of the positioning hole 5 of the frame 1, the movable iron piece 15 is reliably positioned with respect to the support 6, and the operating stroke angle θ of the movable iron piece 15 does not displace, eliminating variations in operating voltage. Ru. The electromagnet 10 itself can be fixed by various means other than the screws 17, such as caulking, rivets, and welding.

The operation lever 18 is connected to the contact drive unit 3 via a conversion lever 26, which will be described in detail below, to operate the movable iron piece 15 of the electromagnet 10.
0, transmitted to the clutch mechanism 45 and instantaneous contacts 52, 54
A, 54b opening and closing holes 19, 19 (
(see Figure 6 A) from the protrusion 24 of the guide plate 23 to the pin 25.
(See FIG. 2) and can slide freely in the left and right directions in FIG. There is.

Note that the guide plate 2-3 has the protrusion 24 and the pin 25 in the first position.
It is fixed by being inserted into the holes 69a, 69b, and 6c of the terminal block 65 shown in FIG. As shown in FIG. 7, the conversion lever 26 and the center hole 27 are loosely fitted into the pin 25 of the guide plate 23 and are rotatably mounted, and the operation piece 28a1 operates the time limit card 31 of the contact drive unit 30. Operation piece 2b for operating the clutch lever 46 of the clutch mechanism 45
, and protrusions 29a and 29b are provided at approximately 1800 rotationally symmetrical positions about the pivot point. This protrusion 2
9a is a groove 21a formed on the side of the operating lever 18.
is engaged in. If the self-resetting type is used as in this embodiment, the operating lever 18 shown in FIG. When the movable iron piece 15 rotates clockwise in FIG. 1 and the operating lever 18 moves to the left in FIG. 2, the conversion lever 26 rotates clockwise, demagnetizing and moving the operating lever 18 to the right. When you move to the conversion lever 26
rotates counterclockwise.

On the other hand, in the case of an electric return type, the other configurations remain the same, and the operating lever 18 shown in the opening in Figure 6 is used, and its groove 2
1b is engaged with another protrusion 2b of the conversion lever 26, and the conversion lever 26 is activated based on the excitation/demagnetization of the electromagnet 10.
Contrary to the self-resetting type, the mechanism is rotated counterclockwise when energized and clockwise when demagnetized, thereby converting the operation. These series of operations will be detailed later. The contact drive unit 30 consists of a time limit card 31 and a driven gear 40, and the time limit card 31 includes a terminal block 65 (described below).
The contact operating pieces 32a, 32 are rotatably attached to the support shaft 3 fitted in the hole 64 of the
It has a b1 cam driven piece 33, and one end is connected to the conversion lever 26.
By locking the other end of the coil spring 39, which is locked to the tip of the operating piece 28a, to the protrusion 34, the coil spring 39 is constantly biased in the counterclockwise direction in FIG.

Further, the time limit card 31 is operated by rotating the conversion lever 26 counterclockwise as described below and contacting the operating piece 28a with the adjustment member 36 attached to the protrusion 35, as shown in FIG. It rotates in the rotational direction and is restrained. The adjustment member 36 has an eccentric hole (not shown) that fits into the protrusion 35 of the time limit card 31, and can finely adjust the contact position of the operating piece 28a of the conversion lever 26 by rotating it at an appropriate angle of a degree. It's possible. The driven gear 40 has a ring-shaped cam portion 41 having a cutout portion 41a on its lower surface, and a protrusion 42 that engages with a stopper piece 96 (see FIG. 4) of a well-known time setting device 95 on its upper surface. , is rotatably mounted on a support shaft 4 protruding from the frame 1, and is constantly biased clockwise in FIG. 1 by the unwinding force of a coiled return spring 44 (see FIG. 3). This driven gear 40 is restricted from the urging force of the return spring 44 by the projection 42 coming into contact with the stopper piece 96 of the time setting device 95 in the clockwise direction, and when setting the time, by rotating the knob 97, It rotates following the stopper piece 96 that rotates together with the knob 97, and is set to an arbitrary rotation angle. As shown in FIG. 9, the clutch mechanism 45 is configured such that clutch gears 47a and 47b are directly connected to the upper and lower ends of a shaft portion 46a formed on a clutch lever 46 so as to be freely rotatable.
The boss portion 46b is rotatably mounted on the same axis (support shaft 4) as the driven gear 40, and one end of the return spring 44 is locked to the lever portion 46c, so that it is constantly biased in the clockwise direction in FIG. has been done.

The clutch gear 47a is the output gear 7 of the Warren motor 75.
7, and since the clutch gear 47b is installed coaxially with the driven gear 40 of this clutch lever 46, the driven gear 4 can also be engaged with the rotation of the clutch lever 46.
0 and maintains the engaged state. Also, clutch lever 4
When the converting lever 26 is rotated counterclockwise, the operating piece 28b thereof can come into contact with the lever portion 46c of 6. At this time, the clutch lever 46 is rotated slightly counterclockwise in FIG. The clutch gear 47a is disengaged from the output gear 77 of the Warren motor 75.

The contact mechanism 50, as shown in FIGS. 10 to 12,
Fixed contact 51 having a fixed contact 52 constituting a momentary contact
, a movable contact piece 53a having movable contacts 54a and 554b.
, 53b, a fixed contact piece 55 having a fixed contact 56 constituting a time-limiting contact, movable contact pieces 57a, 57b having movable contacts 58a, 58b, a fixed contact piece 59 having a fixed contact 60 constituting a motor contact, a movable It consists of a movable contact piece 61 having a contact point 62.

The fixed contact pieces 51, 55, 59 are fixed to the terminal block 65 by insert molding, as shown in FIG.
The movable contact pieces 53a, 57a, 61 are fixed to the terminal block 70 by insert molding, as shown in FIG.
It is made into a saw by fitting it into the body. One movable contact piece 53b, 57b is also fixed to the terminal block 72 shown in FIG. 1 or 4 by insert molding, and the terminal block 6
It is fixed to the other side of 5. The above terminal block 70,
For example, the side surface of the movable contact piece 53a is inclined at an angle of 0 with respect to the installation direction of the movable contact piece 53a, and this side face closely contacts the side surface of the terminal block 65, so that the movable contact pieces 53a, 53b
, 57a, 57b, and 61 are urged inward by their own spring properties, and provide contact pressure to the fixed contacts 52, 56, and 60. The contact mechanism 50 which has been made into a block as described above is mounted on the protrusions 67, 67 of the terminal block 65 on the mounting base part 2 of the frame 1.
It is fixed by abutting the lower surfaces of the two and holding it with the claws 68.

At this time, the upper portions of the movable contact pieces 53a, 53b are pressed against the operating piece 22 of the operating lever 18, and the movable contact pieces 57a,
The upper portions of 57b and 61 are pressed against the contact operating pieces 32a and 32b of the time limit card 31. The Warren motor 75 has a rotor section 76 equipped with an output gear 77 and a bear coil 80.
, 80, and a stator section 78 consisting of an electromagnetic coil 81. It is becoming more and more common.

Next, a time-limited relay (self-resetting type) consisting of the above configuration
Explain the operation.

First, when the power to the electromagnet 10 and Warren motor 75 is turned OFF, the electromagnet 10 is demagnetized, so the movable iron piece 15 comes into contact with the support column 6 and is rotated counterclockwise in FIG. 1 to operate. Lever 18 moves to the right,
The instantaneous contact driven by the operating piece 22 is the movable contact 5.
3a is opened and the movable contact 53b is closed.

At this time, the conversion lever 26 has a protrusion 29a that is connected to the operation lever 1.
Since the pin 25 is engaged with the groove 21a of the pin 25, the pin 25 is rotated slightly counterclockwise from the position shown in FIG. Due to this rotation, the time limit card 31 is moved to the adjustment member 3.
6 is pressed by the operation piece 28a of the conversion lever 26,
It is biased clockwise in FIG. 1 using the support shaft 3 as a fulcrum,
The cam driven piece 33 is restrained at a position spaced apart from the force arm portion 41 of the driven gear 40.

At this time, the contact operation pieces 32a, 32b of the time limit card 31
When the time limit card 31 is rotated in the clockwise direction, the movable contact 58a opens and closes, and the movable contact 58b closes.
is closed. On the other hand, the operation piece 28b of the conversion lever 26
presses the lever portion 46c of the clutch lever 46, the clutch lever 46 rotates counterclockwise in FIG. 1 against the spring force of one end of the return spring 44, and the clutch gear 47a
is disengaged from the output gear 77 of the Warren motor 75. Time setting is done using the knob 9 of the time setting device 95.
This is done by rotating 7.

That is, the above-described protrusion 42 engages with the stopper 96 that rotates together with the knob 97, and the driven gear 40 that rotates accordingly is set to an arbitrary rotation angle. Now turn the power to 0
When N, the electromagnet 10 is energized, the movable iron piece 15 is attracted to the iron core 12, and rotates clockwise in FIG.
4b is closed and the indicator lamp 8 lights up.

Further, based on the leftward movement of the operating lever 18, the conversion lever 26 rotates clockwise in FIG.
a releases the restriction on the time limit card 31, and
The operating piece 28b releases the clutch lever 46 from being restrained. At this time, the time limit card 31 is pulled by the coil spring 39 and rotates counterclockwise in FIG. The clutch gear 74a rotates clockwise in the figure and meshes with the output gear 77 of the Warren motor 75. At the same time (when the power is turned 0N, motor contact 60,
62 is closed), the Warren motor 75 starts, and the rotational driving force is transferred from the output gear 77 to the clutch gear 47.
a, 47b to the driven gear 40, and the driven gear 40 rotates counterclockwise in FIG. 1 while winding up the return spring 44. FIGS. 1 to 5 illustrate this state. When the driven gear 40 rotates by a predetermined angle in the counterclockwise direction in FIG. The cam follower piece 33 falls into the cutout part 41a of the cam part 41 by the spring force of the coil spring 39, and this fall occurs when the time limit card 31 slightly rotates counterclockwise in FIG. , the rotation is regulated by the adjustment member 36 coming into contact with the operation piece 28 of the conversion lever 26.

At this time, the time-limiting contacts 58a and 58b are switched (the movable contact 58a is closed and the movable contact 58b is opened), the motor contacts 60 and 62 are opened and separated, and the Warren motor 75 is stopped. The time-limited operation is thus completed, and when the power is turned off, the movable iron piece 15 returns to the counterclockwise direction in FIG. 1 and returns to the state described at the beginning.

That is, the operating lever 18 moves to the right, the movable contact 53a opens and closes, the indicator lamp 8 goes out, and the movable contact 53b closes. At the same time, the conversion lever 26 rotates counterclockwise in FIG.
By pressing the adjustment member 36, the time limit card 31 is rotated clockwise in FIG. , 62 are closed. On the other hand, when the operation piece 28b of the conversion lever 26 presses the lever portion 46c of the clutch lever 46, the clutch lever 46 rotates counterclockwise in FIG. 1, and the clutch gear 47a
The meshing with the output gear 77 is released. Further, the driven gear 40 has a return spring 44 that causes the protrusion 42 to move to the stopper 96.
It rotates back clockwise until it comes into contact with , that is, to the settled rotation angle, and time settling becomes possible again. As is clear from the above description, the present invention provides a method for positioning the electromagnet with respect to the return stopper of the movable iron piece on the same plane as a reference plane on which the movable iron piece is hinged and supported on a part of the iron core frame. Since a projecting piece having a reference surface is provided and the fixed contact piece is thrust into engagement with a positioning hole drilled on a mounting base provided with the above-mentioned return stopper of the frame, the electromagnet can be moved extremely accurately. It can be fixed in position and eliminates the drawbacks caused by variations in operating voltage due to displacement of the stroke of the movable iron piece.

[Brief explanation of drawings]

FIG. 1 is a plan view of a time-limited relay according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a rear view of FIG. 1, and FIG.
Figure 5 is the right side view of Figure 1, Figure 6 is the left side view of Figure 1, Figure 6 is the left side view of Figure 6,
The front of the scolding operation lever, Figure 7 is a perspective view of the conversion lever,
Fig. 8 is a perspective view of the time limit card, Fig. 9 is a perspective view of the clutch lever, Figs. 10 and 11 are perspective views of the contact mechanism, Fig. 12 is a plan view of the contact mechanism, and Fig. 13 is the invention of the present invention. FIG. 14 is an exploded perspective view of the main parts of a conventional time-limiting relay. 1...Frame, 2...Mounting base, 5
...Positioning hole, 6...Post (return stopper), 10...Electromagnet, 11...Iron core frame,
11b... Reference surface for hinge, 11c...
・Protruding piece, 11d...Reference surface for positioning, 15...
・Movable iron piece, 30...Contact drive unit, 31...
... Time limit card, 40 ... Driven gear, 41 ...
Cam part, 45...Clutch mechanism, 50...
...Contact mechanism, 75... Warren motor.

Claims (1)

[Claims] 1. A driven gear set at an arbitrary rotation angle by a time-limited setting device is brought to the zero position by the rotational force from a synchronous motor being transmitted through a clutch mechanism linked to the operation of a movable iron piece of an electromagnet. In a time-limiting relay that opens and closes a time-limiting contact by the time-limiting card rotating slightly in conjunction with the cam portion of the driven gear when rotated, a movable iron piece is hinged to a part of the iron core frame constituting the electromagnet. A projecting piece having a positioning reference surface is provided protrudingly on the same plane as the reference surface supported by the frame, and a positioning hole is bored on the mounting base of the frame into which the projecting piece of the iron core frame can penetrate, and the movable 1. A time-limiting relay, characterized in that a return stopper is provided for the iron piece, and the electromagnet is fixed on a mounting base portion with the projecting piece of the iron core frame thrust into engagement with the positioning hole. 2. The time-limited relay according to claim 1, wherein the return stopper is provided on the mounting base of the frame and on the same plane as the positioning hole.