JPS61116729A - Polar electromagnetic relay - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improved structure of a compact polarized electromagnetic relay of the Grimet board mounting type.

This type of relay is used in large quantities in various &i electronic devices, and the amount used has been increasing recently.As with other electronic components, this type of relay mounted on a printed board is becoming more compact.・There is a demand for lightweight and inexpensive products.

[Conventional technology]

As a conventional relay, for example, there is a magnetic holding type electromagnet disclosed in "Publication of Utility Model Publication No. 57-13768", but in this case, when the relay is operating (when the armature coil is energized), the swinging support ends of the armature and the yoke are both of the same polarity. Then, magnetic repulsion state K
Because of this, the rotation of the armature is unstable and the contacts cannot be opened and closed with high reliability.To solve this problem, the conventional method uses a clamping member made of a U-shaped leaf spring to clamp the swinging support end of the armature and yoke. A relay has also been proposed in ``Japanese Unexamined Patent Publication No. 58-190007,'' but this plate spring installation work is extremely troublesome, and the relay has the disadvantage that the length of the relay increases due to the space for installing the plate spring. [Problems to be Solved by the Invention] The present invention solves the above-mentioned drawbacks of the conventional relay, more reliably achieves rocking support of the armature and yoke with a simple structure,
In addition, the support structure should not increase the relay length,
An object of the present invention is to provide a polarized electromagnetic relay that is inexpensive and more compact.

[Means for solving problems]

The solution of the present invention is to provide a leaf spring at one end of the armature.
An end of a wire plate spring is attached to one end of the armature, and the other end is attached so as to lead out toward the other end of the armature and upward, and when the armature is placed in a coil bobbin, the leaf spring A polarized It characterized in that the other end abuts the inner surface of the coil bobbin, and the one end presses the other end of the armature against the magnetic pole part of the yoke.
It's in the Wi relay.

[Effect]

In the present invention, a leaf spring is attached in advance to one end of the armature, and when the armature air is inserted into the coil bobbin, the other end of the armature is brought into pressure contact with the magnetic pole of the yoke by the elasticity of the wire leaf spring, and swings. Since it is movably supported, assembly work is simplified, and unlike conventional methods, the swing support end of the armature and yoke can be made long enough to accommodate a clamping plate spring, or a wire plate spring can be attached. There is no need to secure space, and a more compact polarized relay with a smaller length can be obtained.

〔Example〕

The figures show an embodiment of the present invention. Figure m1 is an exploded perspective view of the present polarized electromagnetic relay, Figure 2 is a perspective view showing the assembled state of the electromagnet shown in Figure 1, and Figure 3 is a fully assembled state. Figure 4 (B) is a side sectional view for explaining the operation of the electromagnet part of this relay, and Figure 5 (B) is a perspective view of the exterior of this relay.
Figure 6 is a perspective view for explaining the state of the tSS gun magnetic circuit in Figure 6. Figure 6 is a side sectional view showing the mounting portion of the armature and cork in Figure 3. Figure 7 is the contact drive card of Figure 1. FIG. 8 is an enlarged perspective view of FIG. 6, and FIGS. 9 and 10 are enlarged perspective views of another embodiment of FIG. 8.

In the figure, 10 is a T-shaped armature made of magnetic material, 20 is a leaf spring made of spring material such as stainless steel or phosphor bronze, 30 and 40 are a pair of L-shaped and U-shaped yokes made of magnetic material, and 50 is a permanent 60 is a contact movable card molded with insulating resin, 70 is a coil bobbin molded similarly to the card 60, 90 is a box-shaped case made of an insulator molded with resin, 100 is a movable contact spring , 101 is a spring terminal to which the movable contact spring 100 is welded and fixed, and 102 and 103 are fixed contact spring terminals.

One end 11 of the armature 10 is a magnetic attraction part for the yoke 30.40, and one side of the other end 12 is provided with a plate 20 (
6.8) is attached, and a convex 13 (see also FIG. 8) is integrally formed on the opposite side by stamping.

The yokes 30 and 40 are fixed by magnetic attraction and adhesive via a permanent magnet 50 so that their opposing sides are approximately 1,000 rows apart. One end of fc joke 0 and 40 31.41
is led out upward to form a magnetic attraction part.

Furthermore, the length of the other end portion 32 of the VC yoke 30 is formed such that its end surface substantially matches the end surface of the permanent magnet 50.
As a result, the magnetic flux from the permanent magnet 50 effectively flows to the yoke 30 without causing leakage magnetic flux. On the other hand, yoke 4
The other end 42 of the armature 10 is a magnetic pole part that swingably supports the other end 12 of the armature 10 and is led out upward, and a recess 43 is formed in the side surface thereof.

The contact drive card 60 has a substantially ] shape when viewed from above, with contact spring support parts 61 on both sides and an amateur chair mounting part 62 in the center. As shown in FIG. 7 (a plan view of the forceps 60 in FIG. 1 viewed from below), the contact spring fitting slit 63 is formed at the bottom and is open at the bottom. amateur 1
0 is a tapered trap that is narrow on the other end 12 side and wide on the one end 11 side. - The mounting part 62 is formed with an amateur chair fitting m64 that is open at the bottom and an operation confirmation window 65 for the amateur 10. 7 langes 72° 73 are integrally formed on both sides of the flange. A protrusion 74 for preventing the card from falling off is integrally formed on the upper part of the 7-line gauge 72, and a protrusion 75 that provides a groove for guiding the coil lead wire 77 is integrally formed on the upper part of the 7-line gauge 73.

Further, coil terminals 76 are inserted on both sides of the 7 flange 73, and the upper surface 78 of the flange 73 has the coil lead wire 7.
70 information surface. Furthermore, the side part of the 7 flange 73 is a recess 79, and a through hole 8 for the winding shaft is provided in the recess 79.
0 is located.

The case 90 has a through hole 91 into which the WK spring terminal 101 is inserted and a through hole 92 into which the fixed contact spring terminals 102 and 103 are inserted. Further, the recess 93 for accommodating the coil bobbin puff 0 and the like has a bottom surface, and a button yoke guide groove 94 is formed so as to open on the recess 93 side.

Incidentally, reference numeral 95 is a transparent resin cover (shown by dotted lines in FIG. 3) attached to the case 90.

To assemble this relay, attach the coil bobbin 70 and the coil bobbin 70 in the state shown in FIG.
The armature 10 is then inserted into the through hole 8o of the coil bobbin 700 to form the electromagnet shown in FIG. 2.

@2 In Figure 2, Jl is arranged within the winding shaft of the amateur 10 coil bobbin 70, one end 11 of which protrudes from the 7 flange 72 and is located between one end 31 and 41 of the yokes 30 and 40, and the other end 13 is swingably supported by the other end 42 of the yoke 40.

At this time, as shown in FIGS. 6 and 8, the other end 13 of the two
and 42+-1: The convex 13 and the concave 43 are aligned, so that accurate positioning is performed by 1q, and one end is connected to the coil bobby 7.
The plate spring 2° that is in contact with the inner surface of the winding shaft 70 presses the convex 13 and the concave 43 with its elasticity, ensuring a more secure hold, so even if subjected to vibration or impact, the armature will not shift its position. Prevented. Also, the other end 13 and the recess 7 of the 4211y run shift 3
9, and an upper surface 78 is formed to cover this.

The electromagnet portion formed in this way is used as a contact spring (ioo).

101, 102, 103) are inserted into the recess 93 of the case 90, the yokes 30 and 40 fit into the groove 94, and the coil terminal 76 fits into a corresponding hole (not shown).

Attach it in this way. After this, insert the card 60 into the slit 6.
3 has a movable contact spring 100, and the groove 64 has an armature 10.
Attach the cover from above so that it fits into the 95t cover.
- By attaching it to the case 90, the relay according to the present invention shown in FIG. 3 is completed.

Furthermore, since the slit 63 is tapered as described above, it comes to sandwich the vicinity of the middle part of the movable contact spring 100 as shown in FIG. 7, and can relieve the mechanical stress of the movable contact spring 100. can.

The operation of this relay is such that when there is no direct connection to the coil 71, both ends of the armature lO are magnetically attracted to one end 31 of the yoke 30 and the other end 42 of the yoke 40 in the state shown in FIG. This magnetic attraction is provided by the magnetic flux a of the permanent magnet 50 shown in FIG.

When the coil 71 is energized from this state and the armature IO is excited by the coil magnetic field, the armature 10 is in a magnetic repulsion state between its one end 11 and the one end 31 of the yoke 30, and the one end 11 and the one end 41 of the yoke 40 The contact spring becomes magnetically attracted and moves as shown in FIG. 4, thereby opening and closing the contact spring. At this time, the other end 12 of the armature 10 and the other end 42 of the yoke 40 are in a state of repulsion, but the elastic force of the leaf spring 20 prevents them from separating. FIG. 5 ω) shows the magnetic flux due to the coil magnetic field.

Then, when the power supply is cut off from FIG. 4 CB), the armature 10 is again moved by the magnetic flux a of the permanent magnet 50 as shown in FIG. 4 (CB).
0f49 and FIG. 10 are modified examples of the embodiment shown in FIG. 8.

The difference in FIG. 9 is that the convex 13 and concave 43 are made into semicylindrical protrusions and depressions K, and in FIG. The structure is such that

〔Effect of the invention〕

According to the present invention as described above, by inserting the armature into the coil bobbin, the armature is pressed by the pre-attached leaf spring K and is attached so as to be able to swing freely, which simplifies the assembly work. Since no special extension part or space is required for installation, the entire relay can be downsized, and a polarized electromagnetic relay with highly stable operation that is more compact and inexpensive can be provided.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of this polarized electromagnetic relay, and Figure 2 is an exploded perspective view of the present polarized electromagnetic relay.
Figure 3 is an external perspective view of the relay in the assembled state; Figure 4 (2)) is a side sectional view to explain the operation of the electromagnet part of the relay. , FIG. 5 (AtCB) is a perspective view for explaining the state of the magnetic circuit of the electromagnet section in FIG. 4, FIG. 6 is a side sectional view showing the mounting portion of the armature and yoke in FIG.
The figure is a partial plan view of the contact drive card in Figure 1, and Figure 8.
9 is an enlarged perspective view of FIG. 6, and FIG. 1θ is an enlarged perspective view of another example of FIG. 8. [Explanation of symbols] 10... Amateur 20... Leaf spring 30.40... Yoke 50... Permanent magnet 60... Contact drive card 70... Coil bobbin ≦ Cheers 1! ≧ and 1 rod 4 eye area 5

Claims (4)

[Claims] (1) At least a coil bobbin around which a coil is wound, an armature that is moved by the excitation of the coil and drives a contact spring, a yoke to which a permanent magnet that provides polarity is attached, and a contact drive card connected to the contact spring. The armature is disposed within the coil bobbin, the contact drive card is attached to one end of the armature, and the other end is swingably attached to the magnetic pole of the yoke. In the polarized electromagnetic relay, a leaf spring is attached to one end of the armature, one end of the leaf spring is attached to the one end of the armature, and the other end is guided upward in the direction of the other end of the armature. When the armature is installed in the coil bobbin, the other end of the leaf spring comes into contact with the inner surface of the coil bobbin, and one end of the leaf spring presses the other end of the armature against the magnetic pole part of the yoke. A polarized electromagnetic relay. (2) A convexity is formed on one of the other end of the armature and a magnetic pole part of the yoke, and a concave is formed on the other, and the convexity and the concave engage with each other so that the armature is swingably mounted. A polarized electromagnetic relay according to claim 1, characterized in that: (3) The contact drive card has an armature fitting groove that is open at the bottom and a contact spring fitting slit, and the card is inserted from above toward one end of the armature disposed in the coil bobbin and the contact spring. 2. The polarized electromagnetic relay according to claim 1, wherein the relay is fitted into a groove and a slit to support one end of the armature. (4) The card has a contact spring support part led out along the contact spring toward the other end of the armature, and the slit is formed in the support part, and the slit is connected to the other end of the armature. Claim 3 is characterized in that the slit has a tapered shape with a narrow slit width on one end side and a wide slit width on the other end side, and the narrow width portion of the slit holds the vicinity of the middle part of the contact spring. Polar electromagnetic relay.