JPS6346936B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized by the rotation of the armature block.
Related to polarized relays whose contacts are turned on and off. Conventionally, in this type of polarized relay, a bearing plate is mounted on a combination of a coil block having a magnetic pole and a contact block in which a contact terminal group including a movable contact terminal and a fixed contact terminal is implanted, and the bearing plate is An armature block is rotatably held on a support shaft and both ends thereof face the magnetic poles, and a coil of a coil block is energized to rotate the armature block, and the armature block is fixed to the movable contact terminal. The contacts were turned on and off by driving a fixed contact spring toward a fixed contact terminal. However, in this configuration, the number of parts is particularly large and the configuration is complicated, and the gap between both ends of the armature block and the magnetic pole part, or the contact force between the armature block and the contact spring must be set appropriately to ensure smooth operation. It did not work properly, required complicated adjustment work, and was not easy to assemble. SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks, and to provide a polarized relay that has a small number of parts, a simple structure, and is easy to assemble. The polarized relay of the present invention will be explained below with reference to the drawings. In Figs. 1 to 4, 1 is a coil block, and a lower flange 3 has coil terminals 2, 2 implanted therein.
and an upper flange 6 facing the lower flange 3 via a hollow winding drum 5 around which the coil 4 is wound. Further, receiving grooves 7, 7 and 8, 8 are formed in the corner portions of one end of the lower flange portion 3 and the upper flange portion 6 facing each other, and fixed contacts 9, 9 are fixedly installed at the tips. Fixed contact terminal 10,
10 are provided so as to be press-fitted and fixed into the receiving grooves 7 and 8, respectively, with their tips protruding upward from the upper flange 6 and their lower ends protruding downward from the lower flange 3. Furthermore, receiving grooves 11, 11 (only one is shown in the figure) are formed at the corner of the other end of the lower flange portion 3,
The legs 13, 13 of the U-shaped common terminal 12 are provided so that they can be press-fitted and fixed, and the receiving grooves 11,
A through hole 14 is bored between the holes 11. Furthermore, notches 15, 15 are provided at the other end of the upper flange 6, and another notch 1 is provided between the notches 15, 15.
6 is formed. In addition, the winding trunk 5 has a U
One leg 18 of the letter-shaped yoke 17 passes through and projects upward from the center of the upper flange 6, and the other leg 19 of the yoke 17 passes through the through hole 14 of the lower flange 3. and extends upward from a notch 16 at the other end of the upper collar portion 6. 20 is an armature block, and a pair of armatures 21, 21 are arranged in parallel to each other. Moreover, a permanent magnet 22 shorter than the armatures 21, 21 is provided between the armatures 21, 21.
is fixedly installed, and the armature 21, 21
The ends of both leg portions 18 and 19 of the yoke 17 projecting upward from the upper collar portion 6 are located between both ends of the yoke. Reference numeral 23 denotes an actuator integrated into the armature block 20 , which extends parallel to one end of the body 24 and has the fixed contact 9,
Contact springs 26, 26 are provided with fixed movable contacts 25, 25 that can make contact with the common terminal 12, and a support spring portion 27 is fixed to the base of the leg portions 13, 13 of the common terminal 12 at the other end. , 27 are extended with sufficient springiness. Further, a through hole 28 is formed at one end of the body section 24 to accommodate an end of one leg section 18 protruding from the center of the upper flange section 6 of the yoke 17, and at the other end, a through hole 28 is provided at the other end. A notch 29 is provided for fitting the ends of the leg portions 19.
A cover 30 is attached to the coil block 1 , and is preferably made of a suitable magnetic material so as to function as a magnetic shield. Further, the operation of the present invention will be explained in detail. When current is applied to the coil 4 of the coil block 1 , the yoke 17 is magnetized, and one of the armatures 21, 21 of the armature block 20 is connected to the leg portion 18.
Then, the other side is attracted to the leg portion 19. Therefore, if the coil 4 is energized with the opposite polarity to the previous energization, the armature block 20
is rotated about the permanent magnet 22 from the position shown in FIG. 5 to the position shown in FIG. As the armature block 20 rotates , the actuator 23 fixed to the armature block 20 also follows the rotation, so that the movable contact 25 of one contact spring 26 is separated from the fixed contact 9. At the same time, the movable contact 25 of the other contact spring 26 comes into contact with the other fixed contact 9, and the contact is turned on and off. In this case, the attraction forces P 1 and P 2 of the armatures 21 and 21 of the armature block 20, that is, the attraction forces P ₁ and P ₂ of the permanent magnet 22 acting on both legs 18 and 19 of the yoke 17 , respectively, and the armature block 20
The spring force F ₁ of the contact spring 26 that acts upon the rotation of
F ₂ and the spring force F ₃ of both support spring parts 27, 27,
By appropriately setting _F4 , the armature block 20 can be rotated smoothly without being pivoted as described above. That is, in order to rotate the armature block 20 , the legs 18,1
9, the attraction forces P ₁ and P ₂ are applied to the contact spring 26, respectively.
The spring force F is greater than ₁ , and both supporting spring portions 27,
greater than the sum of the spring forces F ₃ and F ₄ of 27, in other words
It is necessary to establish a relationship such that P ₁ > F ₁ and P ₂ > F ₃ + F ₄ .
Further, at this time, by making the spring force F ₁ of the contact spring 26 equal to the sum of the spring forces F ₃ and F ₄ of both support spring parts 27 and 27, in other words, by setting F ₁ =F ₃ +F ₄ , As shown in Fig. 7, the attraction force at zero ampere turn, that is, the attraction force P ₁ +P ₂ of the permanent magnet 22 against both legs 18 and 19, and the spring force of the contact springs 26 and 26.
F ₁ , F ₂ and the spring force F ₃ of the support spring parts 27, 27
The total spring load F ₀ due to +F ₄ is balanced, and even if the armature block 20 is a non-supporting shaft, it can be rotated substantially uniformly. Furthermore, when the actuator 23 is displaced with the rotation of the armature block 20 , the support spring parts 27, 27 are displaced.
Actuator 2 is determined by the amount of displacement of armature block 20 .
3 becomes even larger, and even if the movement of the armature block 20 is relatively small, the contact spring can be driven to a large extent. The support spring parts 27, 27 may be formed in a U-shape to have sufficient springiness, as shown in FIGS. 1 and 8, or may be formed in a U-shape as shown in FIG. It may simply be formed into an L-shape. The polarized relay of the present invention configured as described above has a small number of parts, a simple configuration, and easy adjustment, which greatly improves the ease of assembly. Since the displacement is larger than that of your block, it achieves effects such as significantly improving sensitivity.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the polarized relay of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is an internal plan view, Fig. 4 is an internal side view, and Figs. 5 to 7 are the same. FIG. 8 is an enlarged perspective view of the same portion, and FIG. 9 is a partially enlarged perspective view of another embodiment of the present invention. 1 ...Coil block, 2...Coil terminal, 3
... lower flange section, 4 ... coil, 5 ... winding body section, 6 ...
...Upper flange, 7, 8...Receiving groove, 9...Fixed contact, 1
0... Fixed contact terminal, 11... Receiving groove, 12... Common terminal, 13... Leg, 14... Through hole, 15,
16...notch, 17...yoke, 18,19...
Leg part, 20 ... Armature block, 21...
Armature, 22... Permanent magnet, 23 ... Actuator, 24... Body, 25... Movable contact, 26...
Contact spring, 27, 27a...Support spring part, 28...
...Through hole, 29...Notch, 30...Cover.

Claims (1)

[Claims] 1. A coil block having a winding drum section around which a coil is wound approximately in the center, an upper collar section and a lower collar section provided on both end surfaces of the winding trunk section, and one of the lower collar sections. A substantially U-shaped common terminal having an end of each leg fitted into a receiving groove formed on the side and fixed thereto, and one leg passing through the inside of the winding trunk to connect the A U-shaped yoke that protrudes from the upper surface of the flange and whose other leg passes through the through hole of the lower flange and protrudes from the notch of the upper flange to the upper surface of the upper flange, and a U-shaped yoke that extends from both sides of the permanent magnet. An armature block is provided with an armature, and an armature block is fixed to the upper surface of the armature block, and at one end of both sides,
a support spring portion connected to the common terminal;
and an actuator having a movable contact at the other end, one leg of the yoke is loosely engaged with a through hole formed in the body of the actuator, and the other leg of the yoke is playably engages a notch provided in the body of the actuator,
Furthermore, the polarized relay is characterized in that the movable contact of the actuator is arranged to be openable and closable with the fixed contact terminal fixed to the coil block.