JPH0112753Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an improved structure for electromagnetic devices such as electromagnetic relays, buzzers, and flasher relays, which are equipped with an electromagnetic coil, a yoke, and a movable piece with a movable contact that vibrates or oscillates due to electromagnetic force. Regarding.

This type of electromagnetic device has an L-shaped yoke placed next to the electromagnetic coil, but if the dimensions between the yoke and the electromagnetic coil change, the air gap between the movable piece and the electromagnetic coil changes, and the characteristics of the electromagnetic device ,
The characteristics when the movable piece is attracted to the electromagnetic coil vary, and the characteristics of the electromagnetic device also tend to vary even if the dimensions and positional relationship between the movable contact and the fixed contact change.

In the case of electromagnetic relays, this variation results in variation in the on/off characteristics of the contacts, and in the case of buzzers, it manifests as a change in tone color, and in the case of flash relays, it manifests as variation in the lamp blinking cycle, which is not desirable.

In view of the above-mentioned problems, the present invention aims to provide an electromagnetic device in which the relative position of the electromagnetic coil part and the yoke does not change, and the relative position of the movable contact and the fixed contact does not easily shift. .

An example will be described below. This embodiment exemplifies a flasher relay as the electromagnetic device.
1 to 5 show a first embodiment of the present invention.

Figure 1 is an electrical circuit diagram, and its electrical operation is the same as that of Utility Model Publication No. 56-32345. 1 is batsuteri,
2 is an input connection terminal, 3 is a current coil, 4 is a normally closed contact, 5 is an output connection terminal, 6 is a changeover switch,
7, 8, 9, 10 are in-vehicle turn signal lamp groups, 11 is a voltage coil, 17 is a capacitor, 13
indicates the resistance, and F indicates the entire flash relay.

In FIGS. 2 to 5, reference numeral 14 denotes a spool molded from synthetic resin, and as shown in FIGS. 2 and 4, one end of the spool 14 is provided with a collar 14a1 on the one end side. A collar portion 14a2 on the other end side is provided at the other end of 14. The flange 14a1 on one end also serves as a terminal plate for holding the input connection terminal 2, and the flange 14a1 on the other end
a2 integrally has a fixed contact holding portion 14b.

The voltage coil 11 and the energized coil 3 are concentrically wound around the winding part 14f of the spool 14, and each drawer is connected to one end 3a of the energized coil 3 so as to form the electric circuit shown in FIG. is connected to the connection part 2a of the input connection terminal 2 fixed to the terminal plate 14a1, which is the collar on one end of the spool 14, and is also connected to the connection parts 18a and 18b of the fixed contact plate 18 fixed to the spool 14. The other end 3b of the current coil 3 and one end of the voltage coil 11 are connected to each other.

The spool 14, the voltage coil 11, the energized coil 3, and the core 21 within the spool 14 constitute an electromagnetic coil section MC.

To explain the relay section, the yoke 16 and the output connection terminal 5 are integrally fixed to the spool 14 at the lower end of the core 21, and the yoke 16 is connected by pressure contact to the terminal 5 of the caulked portion 21a of the core 21.
and terminal 5 are also electrically connected.

Next, the movable piece of the relay section will be explained with reference to FIG. An armature 22 made of an iron plate and a spring 23 are integrally provided on the armature 22.
2b to form a movable piece, and a movable contact 4a is joined to the tip side of the spring 23.

The movable parts 22 and 23 of the relay shown in FIG.
As shown in FIGS. 2 and 3, the protrusion 16a1 provided on the upper end 16a of the yoke 16 is connected to the spring 2.
It is inserted into the fixing hole 23a of No. 3 and fixed by caulking.
The tail protrusion 22d of the armature 22 is loosely fitted into a square hole 16b provided in the yoke 16, so that the armature 22 is magnetically coupled to the yoke 16.

The fixed contact 4b of the relay portion is joined to a fixed contact plate 18, and the fixed contact plate 18 is inserted into a slit 14b1 of a fixed contact holding portion 14b provided on the collar portion 14a2 of the spool 14. The fixed contact holding portion 14b has a bridge shape so as to sandwich the fixed contact plate 18.

Next, the yoke 16 is made of an L-shaped ferromagnetic material and forms a path for the magnetic flux generated by the electromagnetic coil portion MC.

The flange portion 14a1 on one end side of the spool 14 and the flange portion 14a2 on the other end side have holes 14k1 and 14k2, respectively, which serve as yoke penetration portions through which the yoke 16 passes.
is provided, and the yoke 16 is pushed upward from the bottom in FIG.
It is incorporated into 4k1 and 14k2.

After that, the yoke 16 and the core 21 are connected to the core 2.
They are joined together at one caulking portion 21a.

Note that the brim portions 14a1 and 14a2 are attached to the spool 1.
It is resin-molded integrally with the winding portion 14f of No. 4.

Next, a second embodiment will be described.

In the first embodiment, the yoke penetrating portion 14
Although k1 and 14k2 are formed as holes, they can also be formed as notches (grooves).

In this case, in addition to moving the yoke 16 upward from the bottom of FIG. 2 and inserting it, you can also move the yoke 16 in a direction perpendicular to the paper surface of FIG. It becomes possible to grip the yoke 16 with both of the collar portions 14a1 and 14a2.

As described above, in the present invention, both the collar portions 14a1 and 14 provided on one end side and the other end side are
Yoke penetration part 14k through which the yoke 16 passes through a2
1,14k2 is provided, and the yoke 16 is connected to the spool 14.
Since the yoke 16 is connected to both the upper and lower ends of the spool 14, the yoke 16 is firmly connected to the spool 14 at two places.

Therefore, the yoke 1 is
This prevents the yoke 16 from being tilted relative to the spool 14 due to deformation of the yoke 16 due to an impact or the like during use.

Therefore, the relative positions of the yoke 16 and the spool 14 are accurately determined.

This means that the relative positions of the movable pieces 22, 23 coupled to the yoke 16 and the electromagnetic coil portion MC are accurately determined with little variation.

In addition, in the present invention, since the holding part 14b of the fixed contact 4b is provided on the flange part 14a1 at one end of the spool, the positioning of the fixed contact can be performed with high precision, and the relative position with respect to the movable contact 4a can be accurately determined. It will be done.

Therefore, the electromagnetic coil portion MC is connected to the movable pieces 22, 23.
The ampere turns when sucking in the electromagnetic device also have less variation between products, eliminating the above-mentioned conventional drawbacks and stabilizing the quality of the electromagnetic device.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram employed in a flasher which is an embodiment of the electromagnetic device of the invention, Figs. 2 to 5 show the first embodiment of the invention, and Fig. 2 is a partial cross-section. 3 is a partially sectional top plan view, FIG. 4 is a vertical sectional view of the spool, and FIG. 5 is an elevational view of the armature portion. 14a1, 14a2...Spool collar, MC
...Electromagnetic coil part, 16...Yoke, 22, 23...Movable piece, 14k1, 14k2...Yoke penetration part.

Claims (1)

[Scope of claims for utility model registration] Flange portions 14a1 and 14 at one end and the other end, respectively.
an electromagnetic coil part MC made up of a spool 14 having a diameter of 12 mm, a coil wound around the axis of the spool 14, and a substantially L-shaped magnetic flux extending from one end of the electromagnetic coil part MC to the other end. A yoke 16 forming a passage, a core 21 fixing one side of the substantially L-shaped yoke 16, and the electromagnetic coil portion coupled to the other end of the yoke 16 so as to be able to vibrate or swing.
In an electromagnetic device including movable pieces 22 and 23 that are attracted to the MC and have movable contacts 4a, both flanges 14a1 and 14a of the spool 14
2 are provided with yoke penetration parts 14k1 and 14k2 through which the other side of the substantially L-shaped yoke 16 passes, and the other side of the yoke 16 is connected to both the upper and lower ends of the spool 14, and the yoke 14 is connected to the axis of the spool 14. On the other hand, the other side of the yoke 16 should not be tilted, and the flange 14a1 at one end of the spool 14 should be
a fixed contact 4 that comes into contact with and separates from the movable contact 4a;
An electromagnetic device characterized in that a holding portion 14b is provided, and the fixed contact 4b is held by the holding portion 14b.