JPS6155209B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a lead 3 is inserted into a central through hole 2a of a coil frame 2 around which a coil 1 is wound, and a lead 3 is placed above the opening of the central through hole 2a on the side from which the tip of the lead 3 projects. A first rib 5 is provided on the end surface of the flange 4 protruding in the end direction, and a second rib 6 having substantially the same side width as the first rib 5 is provided on the end surface of the flange 4 below the opening of the central through hole 2a. A magnet abutting piece portion that protrudes from and makes both ribs 5 and 6 face each other vertically, and that abuts both side surfaces of a permanent magnet 7 that is arranged at the front part of the flange portion 4 on the side where both ribs 5 and 6 are provided. 8a and 8b are integrally provided and a pair of fixed contacts 8 and 9 excited by a permanent magnet 7 are connected to both ribs 5 and 6.
A lead in which fixed contacts 8 and 9 are arranged facing each other on both sides of the tip of the lead 3, and the outward movement of the fixed contacts is restricted by locking means provided on both sides of the end face of the collar. Regarding relays, the purpose is to be able to stabilize the gap of the fixed contact, and also to stably obtain the operating characteristics (for example, touching/open voltage) as a reed relay, and the contact pressure, which is important for a reed relay. It is possible to provide a reed relay.

Hereinafter, the present invention will be explained in detail with reference to Examples. FIG. 1 is an exploded perspective view showing one embodiment of the present invention. In the figure, 2 is a coil frame around which the coil 1 is wound, and is made of synthetic resin material.
A mounting portion 10 for fixed contacts 8 and 9 is formed on one end surface of each of the flange portions 4 and 4, and a coil connecting terminal 12 connected to the terminal pin 11 is fitted on the outer circumferential surface of the collar portion 4, 4. A groove portion 13 for insertion is cut out. The above-mentioned arrangement part 10 has an eave piece 14a protruding from the upper part of the end surface of the flange part 4 in the end direction, and this eave piece 14a.
A receiving piece 14 is placed in the direction of the lower end of the flange 4 opposite to 4a.
b is provided protrudingly, and protrusions 15, 15 are provided protruding from the centers of both ends of the flanges 4, 4 as locking means for restricting the outward movement of the fixed contacts, and furthermore, protrusions 15, 15 are provided protrudingly from the center of both ends of the flanges 4, 4, and further below the opening of the center through hole 2a. A second rib 6 is provided on the upper surface of the receiving piece 14b located so as to protrude upward so as to be continuous with the end surface of the flange 4, and a first rib 5 is provided on the lower surface of the eave piece 14a above the opening of the center through hole 2a. It is configured to protrude downward so as to be connected to the. Reference numeral 3 denotes a lead formed of a magnetic metal piece, which is inserted through the center through hole 2a of the coil frame 2, and the tip of this lead 3 is interposed between the fixed contacts 8 and 9, and the lower bent piece at the rear end is inserted. 3a is fitted into a fitting part 17 dug in the rear bottom of the case 16 in which the coil frame 2 is housed. The fixed contacts 8 and 9 are each formed by bending a magnetic metal plate into an L-shape, and have magnet abutting pieces 8a and 9a and bent pieces 8b and 9b. 9b, a substantially U-shaped cutout hole is bored across the magnet contact pieces 8a, 9a, and both legs of this cutout hole are bent to form the cutout piece 8.
By protruding from b, 9b, the bent pieces 8b, 9
A medium strip 18 facing toward the back side of the magnet abutting pieces 8a and 9a is formed on b, respectively. Thus, the bent pieces 8b and 9b are connected to the first rib 5 and the second rib 6,
By arranging the fixed contacts 8 and 9 on the upper surface of the receiving piece 14b of the arrangement part 10 so as to be press-fitted between the protruding pieces 15, the upper and lower end surfaces of the bent pieces 8b and 9b are The two bent pieces 8b, 9b end faces are opposed to each other by contacting both side surfaces of the two ribs 5, 6. At this time, the middle strip 18 of the bent pieces 8b and 9b is bent from the side surface of the protruding piece 15.
The fixed contacts 8 and 9 are press-fitted into the installation portion 10 as the upper and lower end surfaces of the bent pieces 8b and 9b come into pressure contact with the side surfaces of both the ribs 5 and 6 due to the lateral force applied to the end surfaces. That will happen. Next, magnet contact pieces 8a, 9
A permanent magnet 7 is arranged between the eave piece 14a and the receiving piece 14b on the inside of a, and the fixed contacts 8 and 9 are excited. Furthermore, the coil connection terminals 12 are fitted and attached to the grooves 13. A case 16 in which the relay mechanism assembled in this manner can be molded by inserting terminal pins 11 formed by partially punching out a metal plate 19.
It is press-fitted and delivered inside. At this time, the lower bent piece 3a of the rear end of the lead 3 is fitted into the fitting part 17 dug in the rear bottom of the case 16, and the lead 3 is supported and fixed and exposed at the bottom of the fitting part 17. It is electrically connected to the provided terminal pin 11. Further, the lower end surface of the coil connection terminal 12 is electrically connected to a portion of a predetermined terminal pin 11 exposed at the bottom of the case 16, thereby electrically connecting the coil 1 and the terminal pin 11. On the other hand, the fixed contacts 8 and 9 are also electrically connected to predetermined terminal pins 11 and 11. 20 is the lid body, case 1
6. Reference numerals 21 and 21 indicate fixed contact plates that are attached to the end faces of the fixed contacts 8 and 9.

FIG. 3 shows another embodiment of the present invention, in which a first rib 5 and a second rib 6 are provided in the disposed portion 10 of the collar 4 as in the above embodiment, and protrusions 15, 15 are provided.
is provided to regulate the gap between the fixed contacts 8 and 9 by the first rib 5 and the second rib 6, and
The bent pieces 8 of the fixed contacts 8 and 9 are connected to the projecting pieces 15 and 15.
The fixed contacts 8 and 9 are press-fitted into the arrangement portion 10 by applying an inward pressing force to the medium strips 18 of a and 9a. In the case of such an embodiment, as shown in FIG. 4, one end of the approximately F-shaped spring 22 is spot-welded to the base of the back surface of the medium strip 18, and the other end is attached to the tip of the medium strip 18 as shown in FIG. The medium strip 18 is attached as shown in FIG.
can be reliably press-fitted and fixed between the ribs 5, 6 and the protruding piece 15.

FIG. 6 shows another embodiment of the present invention, in which insertion holes 23, 23 serving as locking means are bored on both sides of the opening of the center through hole 2a on the end surface of the flange portion 4, and L
Magnet contact piece 8 of fixed contacts 8 and 9 bent into a letter shape
A, 9a and the bent piece parts 8b, 9b are drilled in a U-shape, and the medium strips 18, 18 of the magnet abutting pieces 8a, 9a remaining between the legs of this hole are extended. Then, fold the tips of the middle strips 18, 18 into pieces 8b, 9b.
The medium strips 18, 18 protrude rearward from the back surface of the
By press-fitting the tips of the contacts into the insertion holes 23, 23, the fixed contacts 8, 9 can be detachably fixed to the arrangement portion 10. Of course, the distance between the fixed contacts 8 and 9 is regulated by the first rib 5 and the second rib 6, which are protruded and opposed to each other, as in the above embodiment.

In the present invention, a second rib having substantially the same side width as the first rib is provided on the end surface of the flange below the opening of the central through-hole of the coil frame so as to protrude toward the end, and both ribs are vertically opposed to each other.
A pair of fixed contacts excited by the permanent magnets are integrated with magnet contact pieces that abut on both sides of a permanent magnet placed at the front of the flange on the side where both ribs are provided. Since the fixed contacts are arranged facing each other on both sides of the tip of the lead in contact with the surface, the contact gap is obtained by molding the fixed contacts at the same time as the coil rod and overlapping the two coil frames. This has the advantage that high accuracy of the contact gap can be obtained only by controlling the rib dimensions, resulting in stable performance.Furthermore, since the fixed contact is not molded at the same time as the coil frame, the fixed contact can be easily assembled using press-fitting or other assembly methods. Replacement is possible and the cost is low. Furthermore, in the present invention, since the outward movement of the fixed contact is restricted by the locking means provided on both sides of the end face of the flange, rattling of the fixed contact is prevented together with the first and second ribs. It has the advantage of eliminating changes in the contact gap due to outward movement of the fixed contact and stabilizing performance together with the first and second ribs.
Moreover, since the coil frame is formed as described above, it can be molded with one mold, and the grooves on the opposite side of the flange that accommodate the first and second ribs and leads can be finished with precision. The movable contact and the fixed contact of the lead can be brought into contact in parallel, eliminating variations in contact pressure.Furthermore, in addition to the above-mentioned configuration, the magnet contact pieces of both fixed contacts can be arranged in parallel, and the magnetic circuit This has the advantage that stable operating characteristics (for example, touching/open-circuit voltage) can be obtained. Furthermore, in the present invention, since the outward movement of the fixed contact is restricted by the locking means provided on both sides of the end face of the flange, rattling of the fixed contact is prevented together with the first and second ribs. It has the advantage of eliminating changes in the contact gap due to outward movement of the fixed contact and stabilizing the performance together with the first and second ribs.Furthermore, since the coil frame is formed as described above, it can be molded into one piece. It can be molded with a mold, and the first and second ribs as well as the groove portion of the opposite flange housing the lead can be finished with precision, and therefore the movable contact and the fixed contact of the lead can be brought into contact in parallel. This has the advantage that variations in contact pressure, variations in electrical life, etc. can be stably obtained.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one embodiment of the present invention;
Figure a is an enlarged cross-sectional view of the same as above, Figure 2 b is Figure 2 a
A-A' sectional view of Figure 2c, B-- of Figure 2a
B' sectional view, Figure 2 d is a CC' sectional view in Figure 2 a, Figure 2 e is a D-D' sectional view in Figure 2 a,
The figure is an exploded perspective view of a coil frame and a fixed contact part of another embodiment of the present invention, FIG. 6
The figure is an exploded perspective view of a coil frame and a fixed contact part of another embodiment of the present invention, and FIG. 3 is a lead, 5 is a first rib, 6 is a second rib, 7 is a permanent magnet, and 8 and 9 are fixed contacts.

Claims (1)

[Claims] 1. A lead is inserted through the center hole of the coil frame around which the coil can be wound, and a first rib is integrally provided on the end surface of the flange above the opening of the center hole on the side from which the tip of the lead projects. At the same time, a second rib having substantially the same side width as the first rib is integrally provided on the end surface of the flange below the opening of the central through hole so that the two ribs are vertically opposed to each other, and the flange on the side where both ribs are provided. A pair of fixed contacts, which are excited by the permanent magnets, are brought into contact with both sides of both ribs, and the tip of the lead is connected to the end of the lead. A reed relay characterized in that outward movement of a fixed contact is restricted by locking means arranged oppositely on both sides and integrally provided on both sides of the end face of the collar.