JPH0415570B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in electromagnetic relays.

[Conventional technology]

FIG. 15 is a configuration diagram of an electromagnetic relay, in which a guide hole 2 and a through hole 3 are formed in a coil bobbin 1, and a coil 4 is wound therein. The yoke 5 and armature 6 are for forming a magnetic circuit.
A piece 7 of the yoke 5 is inserted into the guide hole 2, and a piece 8 of the armature 6 is inserted into the through hole 3. By the way, when inserting the yoke 5, the hinge spring 9
The armature 10 having the hinge spring 9 fixed to the yoke 5 is inserted into the through hole 3 with the hinge spring 9 fixed to the yoke 5. Note that when the yoke 5 and the armature 6 are inserted into the holes 2 and 3 as described above and integrated with the coil box 1, the other piece 11 of the yoke 5 is placed on the other piece 12 of the armature 6. On the other hand, in the base spring block 13, a break contact (not shown) and movable contacts 16, 17 are integrally formed on each base part 14, 15 by molding, and these break contacts (not shown) and movable contacts 16, 17 are integrally formed by molding. Contact 16,1
Each external lead-out terminal 18 that is electrically connected to 7 is provided. Note that each movable contact 16, 17 is fixed by welding. Also, each movable contact 16, 17
A make contact 19 is arranged above. Then, the coil bobbin 1 and the base spring block 13 are connected to the protrusion 20 of the coil bobbin 1 and the base spring block 1.
3, and the tip 10a of the armature 10 is inserted and fixed into the support hole 23 of the drive card 22, and each end 24 of this drive card is brought into contact with each movable contact 16, 17. . Thus,
By energizing and deenergizing the coil 4, the armature 1
0 moves, and in response to this movement, the drive card 22 switches and connects the movable contacts 16 and 17 to the make contact 19 and the break contact.

[Problem that the invention seeks to solve]

However, the electromagnetic relay having the above structure has a complicated structure and is complicated to assemble. That is, the yoke 5 and the armature 6 are inserted into the respective holes 2 and 3 and assembled, and at this time the armature 10
must also be inserted into the through hole 3. Further, the break contact and the external lead-out terminal 18 are integrally formed by molding, and each movable contact 16, 1
7 must be fixed by welding or the like, and the make contact must also be accurately aligned and placed.
After that, the coil bobbin 1 and the base spring block 13 are combined, and then the drive card 22
must be installed.

Therefore, an object of the present invention is to provide an electromagnetic relay that has a simpler configuration and is easier to assemble.

[Means for solving problems]

The present invention provides a coil wound around a coil bobbin with a through hole formed therein, an armature formed in an L shape whose longitudinal side is inserted into the through hole, and a drive card provided at the end of the longitudinal side, and a coil into which the coil is wound. an electromagnet forming body consisting of a yoke having a recess formed therein and having one end in contact with the other end of the armature; and a return spring having one end engaged with or attached to the drive card and returning the drive card to the position before the coil was energized. , and a spring mechanism formed with a hinge spring on the other end that engages with the short side of the armature to return the armature to the position before the coil is biased, and a break contact and a movable contact, which are integrally molded. The first block has external terminals that are electrically connected to the break contact and the movable contact drawn out from the molding part, and the external terminals of the first block are molded so that one end forms a make contact and the other end forms an external terminal. The above-mentioned object is achieved by providing a contact forming block body consisting of a second block forming a fitting hole into which the drive card and the movable contact are inserted, and a fitting part for the electromagnet forming body at a position where the drive card and the movable contact can come into contact with each other. This is an electromagnetic relay that aims to achieve this goal.

The present invention also provides a coil wound around a coil bobbin in which a through hole is formed, an armature formed in a plate shape and inserted into the through hole and provided with a drive card at one end, and a recess formed in which the coil is fitted at one end. An electromagnet forming body consisting of a yoke whose side contacts the other end of the armature, and a U-shaped hinge whose one end is firmly connected to the armature and the other end is inserted and fixed to the coil bobbin to return the armature to the position before the coil is energized. A spring, a break contact, and a movable contact are integrally molded, and each external terminal connected to the break contact and movable contact is led out from the molded part, and one end of the first block forms a make contact, and the other end is a first block. Molding is performed to form external terminals, and a fitting hole is formed into which each external terminal of the first block is inserted, and a fitting part with the electromagnet forming body is formed at a position where the drive card and the movable contact can come into contact. The present invention is an electromagnetic relay that attempts to achieve the above object by including a contact structure block body consisting of a second block.

[Effect]

By providing such a means, the L-shaped armature is inserted into the through hole of the coil bobbin around which the coil is wound, and the yoke fits the coil into the recess to form an electromagnet forming body. The formation is provided with a spring mechanism consisting of a return spring and a hinge spring for returning the armature when the coil is deenergized. On the other hand, a first block having a break contact, a movable contact, and an external terminal is integrated through a fitting hole in a second block having a make contact to form a contact forming block body. In this way, the electromagnet forming body and the contact forming block body are connected via the fitting portion.

Further, by providing the above means, the plate-shaped armature is inserted into the through hole of the coil bobbin around which the coil is wound, and the yoke fits the coil into the recess, thereby constructing an electromagnet forming body.
This electromagnet formation is provided with a spring mechanism consisting of a hinge spring that returns the armature when the coil is deenergized. On the other hand, a first block having a break contact, a movable contact, and an external terminal is integrated through a fitting hole in a second block having a make contact to form a contact forming block body. In this way, the electromagnet forming body and the contact forming block body are connected via the fitting portion.

〔Example〕

A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded configuration diagram of an electromagnetic relay. A through hole 31 is formed in the coil bobbin 30, and a coil 32 is wound around the coil bobbin 30. The coil bobbin 30 also has a terminal through hole 3 for the coil winding terminal 33.
4a, 34b are formed and the movable confirmation hole 3
5 is formed. 36 is an L-shaped armature, and the longitudinal side 36 of this armature 36 is
a is inserted into the through hole 31. On the long side 36a of this armature 36, grooves 36b and 36b' that engage with the support protrusions 37a and 37b of the drive card 37 are formed, and on the short side 36c, a groove 36d that engages with the engagement protrusion 38a of the spring mechanism 38 is formed. is formed. Further, 39 is a yoke, and this yoke 39 is formed with a recess 39a into which the coil 32 is fitted, and a moving protrusion 39b which fits into the moving groove 37c of the drive card 37. The coil winding terminal 33 has a first winding end 33a having chipped parts a1 and a2 and a second winding end 33b having a chipped part a3. External terminals 33c are formed by extending from.
A stop protrusion 33d is attached to this external terminal 33c.
33e is formed. Further, 30a is an escape groove for the adhesive. In this way, the electromagnet forming body is constituted by each of the members explained above, and when this electromagnet forming body is assembled, it becomes as shown in the sectional view of FIG. 2.

The spring mechanism 38 is for returning the armature 36 from the movement position when the coil 32 is energized to its original position when the coil 32 is released from the energized state, and is shown in a perspective view in FIG. Specifically, the engaging protrusion 3 is provided at the tip.
U-shaped hinge spring 38 with 8a
b, and a return spring 38d having a W-shaped support piece 38c inserted into the support hole 37d of the drive card 37. This spring mechanism 38 includes a hinge spring 38 as shown in FIG.
The short side 36c of the armature 36 is fixed to the lower surface of the yoke 39 so that the short side 36c of the armature 36 rests on the flat surface near b.

On the other hand, reference numeral 40 denotes a contact forming block body, which is composed of a first block 41 and a second block 42. The first block 41 is shown in FIGS.
As shown in the figure, break contacts 43 to 46, movable contacts 47 and 50, and these break contacts 43 to 4
6. It has external terminals 51 to 58 that are electrically connected to the movable contacts 47 to 50, respectively, and these break contacts 43 to 46, movable contacts 47 to 50, and external terminals 51 to 58 are formed by molding 59. It is integrally formed. And each external terminal 5
1 to 58 are provided with fixing protrusions 51a to 58a. In addition, to specifically explain the electrical connections, each break contact 43 to 46 is connected to an external terminal 51 to 54, respectively, and each movable contact 47 to 5 is connected to an external terminal 51 to 54, respectively.
0 are connected to external terminals 5 to 58 via bent portions 60 to 63, respectively. As shown in FIG. 1, the second block 42 has make contacts 64 to 67 and external terminals 68 and 69 electrically connected to these make contacts 64 to 67, respectively, formed by molding 70.
It is integrally formed by. Note that external terminals electrically connected to the make contacts 66 and 67 are omitted for illustration purposes. The second block 42 also has external terminals 51 to 51 of the first block 41.
Fitting holes 71 to 78 into which the coil bobbin 58 is inserted are formed, and a hook fitting part 79 is formed which fits into the hook 30b formed on the coil bobbin 30 and becomes integral with the electromagnet forming body. Furthermore, a protrusion fitting portion 8 is press-fitted into the coil bobbin 30.
0.81 is formed. The protrusion fitting parts 80 and 81 have a polygonal shape as shown in FIG. 6, and are press-fitted so that the contact forming block 40 and the electromagnet forming body do not rotate relative to each other. moreover,
Numerals 82 and 83 are fitting holes into which the external terminals 33c of the coil winding terminals 33 are inserted.

Next, a procedure for assembling the electromagnetic relay configured as described above will be explained.

First, each coil winding terminal 33 is inserted into each terminal through hole 34a, 34b. Then, a winding wire with a relatively small diameter is wound around the notch part a1, and then the winding wire is wound around the notch part a1.
2, is passed from this notch a2 to a notch a3 with a margin, and is wound again at this notch a3. Thereafter, the coil 32 is formed by winding the winding wire around the coil bobbin 30 a predetermined number of times. .
After forming this coil 32, the winding wire is wound around the second winding end of the other coil winding terminal 33, and then around the first winding end. Note that the winding wire wound around the notch part a1 is soldered.

Next, the armature 36 is inserted into the through hole 31, and the yoke 39 is inserted into the recess 39a so that the coil 32
It is inserted and placed. Note that the spring mechanism 38 is fixed to the yoke 39 in advance. Then, as shown in FIG.
Each support protrusion 37 of the drive card 37 is attached to b, 36b.
a, 37b are locked, the movable protrusion 39b of the yoke 39 is positioned in the movable groove 37c, and the support piece 38c of the spring mechanism 38 is further inserted into the support hole 37d. Thus, the cross-sectional view shown in FIG.
The electromagnet formation with the spring mechanism 38 fixed thereon is assembled as shown in the perspective view shown in the figure.

On the other hand, the external terminals 51 to 58 of the first block are inserted into the fitting holes 71 to 78, respectively.
As shown in the figure, a contact constituting block body 40 is formed integrally.

Thus, the hook 30b formed on the coil bobbin 30 is fitted into the hook fitting portion 79 formed on the second block 42, and the protrusion fitting portion 8 is fitted into the hook fitting portion 79 formed on the second block 42.
0,81 is press-fitted into the coil bobbin 30. As a result, the electromagnetic relay shown in the perspective view of FIG. 10 is assembled, and the outer cover 8 is attached to it as shown in FIG.
4 is covered and further fixed with an adhesive. Note that if the amount of adhesive is large, it will invade the inside through the outer cover 90, but this adhesive will accumulate in the relief groove 30a and will not reach the coil 32.

With such a configuration, the armature 36 moves in the direction of arrow A shown in FIG. 2 when the coil 32 is energized, and in response to this movement, the drive card 37 connects the movable contacts 47 to 50. Press to connect each movable contact 47 to 50 and each make contact 64 to 67. Further, when the biasing force of the coil 32 is released, the armature 36 is moved in the direction of the arrow C by the biasing force of the return spring 38d and the back tension of the hinge spring 38b in the direction of the arrow C.
It is returned to the position before the energization in step 2.

In this way, in the first embodiment, the L-shaped armature 36 and the coil 32 are fitted into the yoke 39 in which the recess 39a is formed, and the drive card 37.
Since the electromagnet forming body can be constructed by simply attaching the magnet, the construction is simple and the assembly thereof is also easy. Since the coil 32 is fitted into the recess 39a, the number of turns of the coil can be increased to increase the electromagnetic force, thereby making it possible to downsize the electromagnet assembly as a whole. Further, the drive card 37 has engaging protrusions 37a, 3
Since the armature 36 is supported on both sides of the armature 36 and the moving groove 37c is formed, the opposing area between the longitudinal side 36a of the armature 36 and the yoke 39 can be increased, and the electromagnetic force between them can be increased. The use of coil 3 creates a buffer against vibrations in the winding, allowing the use of very small diameter windings.
2 windings can be increased. Therefore, the electromagnetic force can be increased with a small size. On the other hand, the contact structure block body 40 can be easily constructed by simply combining the first block 41 and the second block 42, and especially the fixing protrusion 51a.
58a makes it difficult to come off from each of the fitting holes 71 to 78. The electromagnet forming body and the contact forming block body 40 are connected to the hook 30b and the protrusion fitting portion 8.
It is only necessary to fit them together by 0.81. Therefore, the structure is simple and assembly is easy and reliable. Furthermore, from the movement confirmation hole 35, the movable contact 3
6 movement status can be monitored and operation as a relay can be confirmed.

Next, a second embodiment will be described with reference to an exploded configuration diagram shown in FIG. 12 and a sectional view shown in FIG. 13. Note that the same parts as in FIG. 1 are given the same reference numerals, and detailed explanation thereof will be omitted. Now, what is particularly different from the electromagnetic relay shown in FIG. 1 is that the armature 90 is formed into a plate shape, and the coil bobbin 9
1. The shapes of the yoke 92, drive card 93, and hinge spring 94 are different. The armature 90 is formed into a T-shape with a large area on one end side to which the hinge spring 94 is fixed when viewed from above, and has grooves 90a on the other end side in which the support protrusions 93a and 93b of the drive card 93 engage. 90b is formed. The coil bobbin 91 is connected to the armature 9 of the through hole 91a.
A support protrusion 91b and a support arm 91 that engage with the support hole 94a of the hinge spring 94 are provided at the upper part of the side where 0 is inserted.
c is formed. In addition, this coil bobbin 9
0 does not have a drive confirmation hole, but it is possible to form one. 91d is a hook, and 91e is an adhesive escape groove. Further, the yoke 92 has a protrusion 92 for supporting the moving shaft of the armature 90.
a is formed. The drive card 93 is formed with the support projections 93a, 93b and a movement groove 93c for the armature 90. Now, hinge spring 9
4 has a U-shape and is fixed to the armature 90, as shown in FIG. 13, and has a biasing force in the direction of arrow D.

Next, a procedure for assembling the electromagnetic relay configured as described above will be explained. The coil winding terminal 33 is inserted into the coil bobbin 90 and the coil bobbin 90 is
After winding the wire around the coil bobbin 90, the winding wire is wound around the coil bobbin 90 a predetermined number of times to form the coil 32. Next, the armature 90 is inserted into the through hole 91a of the coil bobbin 90, and at this time, the support hole 94a of the hinge spring 94 is engaged with the support protrusion 91b, and the first
3. Support as shown in Figure 3. And yoke 92
The coil 32 is fitted into the recess, and the side of the armature 90 to which the hinge spring 94 is fixed is placed on the protrusion 92a of the yoke 92. Next, the support protrusions 93a, 93b of the drive card 93 are engaged with the grooves 90a, 90b of the armature 90, and the movable protrusion 92b of the yoke 92 is placed in the movable groove 93c. In this way, the electromagnet forming body is assembled as shown in the sectional view shown in FIG. Thereafter, the contact forming block body 40 shown in FIG. 9 and this electromagnet forming body are connected by the hook 91d and the protrusion fitting portions 80, 81.

As described above, it is clear that even if the armature 90 is formed into a bar shape as shown in the second embodiment, the structure is simple and the assembly is easy as in the first embodiment. Therefore, it goes without saying that the same effects as in the first embodiment can be achieved.

Note that the present invention is not limited to the above embodiments, and may be modified without departing from the spirit thereof. For example, the number of break contacts, movable contacts, make contacts, and external terminals provided in the contact block 40 may be increased or decreased depending on the location where the electromagnetic relay is used.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to provide an electromagnetic relay that has a simpler configuration and is easier to assemble.

[Brief explanation of drawings]

FIG. 1 is an exploded configuration diagram showing a first embodiment of an electromagnetic relay according to the present invention, FIG. 2 is a sectional view of an electromagnet forming body in the relay, FIG. 3 is a perspective view of a spring mechanism, and FIGS. Figure 5 is a configuration diagram of the contact structure block body, Figure 6 is a configuration diagram showing an example of the fitting part, and Figure 7 is a configuration diagram of the contact structure block body.
Figure 8 is an external view of the drive card, Figure 8 is an external view of the electromagnet forming body, Figure 9 is an external view of the contact block, Figure 10 is an external view of the electromagnetic relay, and Figure 11 is the outer case covered. An external view, FIG. 12 is an exploded configuration diagram showing a second embodiment of the present invention, FIG. 13 is a functional explanatory diagram of a hinge spring, FIG. 14 is a sectional view of an electromagnet forming body, and FIG. 15 is a conventional electromagnetic relay. FIG. 30,91...Coil bobbin, 31,91a...
...through hole, 32...coil, 33...coil winding terminal, 36,90...armature, 37,93
... Drive card, 38 ... Spring mechanism, 39, 92
... Yoke, 40 ... Contact configuration block, 41
...First block, 42...Second block, 43
~46... Break contact, 47-50... Movable contact, 51-58... External terminal, 71-78... Fitting hole, 94... Hinge spring.

Claims (1)

[Scope of Claims] 1. A coil wound around a coil bobbin in which a through hole is formed, an armature formed in an L shape whose longitudinal side is inserted into the through hole and a drive card is provided on the longitudinal side, and the coil. an electromagnet forming body consisting of a yoke having a recess into which it is fitted and one end of which forms a movable armature surface with the other end of the armature, and one end of which is engaged with or attached to the drive card and which drives the drive card before the coil is energized. a spring mechanism in which a return spring is formed to return the armature to the position thereof, and a hinge spring is formed at the other end of the armature to engage with the shorter side of the armature to return the armature to the position before the coil is biased; and a break contact. and a movable contact are integrally molded, and the break contact and each external terminal that conducts with the movable contact are led out from the molded part and molded so that one end is a make contact and the other end is an external terminal. A second block is molded and has a fitting hole into which each external terminal of the first block is inserted, and a fitting part for the electromagnet forming body is formed at a position where the drive card and the movable contact can come into contact with each other. 1. An electromagnetic relay comprising a contact structure consisting of a block and a block body. 2. A coil wound around a coil bobbin in which a through hole is formed, an armature having a plate-like shape that is inserted into the through hole and having a drive card on one end side, and a recess into which the coil is fitted and one end side of the armature. an electromagnet forming body consisting of a yoke forming a movable contact surface with the other end; and an electromagnet forming body formed in a U-shape, with one end firmly connected to the armature and the other end inserted and fixed to the coil bobbin to urge the armature to the coil. A hinge spring that returns to the previous position, a break contact, and a movable contact are integrally molded, and each external terminal that conducts with the break contact and movable contact is led out from the molded part, and one end is formed into a make contact. The other end is molded to form an external terminal, and a fitting hole is formed into which each external terminal of the first block is inserted, and the electromagnet is formed at a position where the drive card and the movable contact can come into contact. 1. An electromagnetic relay comprising a contact forming block body comprising a second block forming a fitting portion with the body.