JPS6126176B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small relay, and in particular to a relay constructed with an electromagnetic block and a contact block each composed of independent blocks, which are intended to be extremely easy to assemble. .

The details of the present invention will be explained based on the following examples. 1 is an iron core, 2 is an electromagnetic coil wound around a bobbin 3, and 4 is a yoke bent in a square shape, and a vertical piece 4a has a hole in the center of the bobbin 3. The end portion 1a of the iron core 1 through which the yoke 3a is inserted is fixed, and the yoke 4, bobbin 3,
The electromagnetic coil 2 and the iron core 1 are configured as an integrated electromagnetic block A. In addition, the yoke 4
The horizontal piece 4b extends along the longitudinal direction at the upper part of the electromagnetic coil 2, and its end 4c is positioned so as to correspond to the end surface 1b of the iron core. 5 and 6 are insulating stands made of resin material, and coil terminals 7 and 6 are respectively connected to them.
8, common terminals 9, 10, normally closed contact terminals 11, 1
2 and normally open contact terminals 13 and 14 are sequentially arranged in parallel and integrally molded to constitute contact blocks B and C. The contact blocks B and C are arranged on both sides of the electromagnetic block A in the longitudinal direction,
With the coil terminals 7 and 8 facing each other,
Common terminals 9 and 10, normally closed contact terminals 11 and 12, and normally open contact terminals 13 and 14 are positioned to face each other. In addition, the normally closed contact terminals 11 and 12 and the normally open contact terminals 13 and 14
are bent toward opposite sides at their upper ends to form contact portions 11a, 12a, and 13a, 14a, and a step is formed between normally closed contact portions 11a, 12a and normally open contact portions 13a, 14a. are doing. 15 and 16 have base end portions 15a and 16a fixed to the upper end bent portions 9a and 10a of the common terminals 9 and 10 by spot welding or the like, and the free end contact portion 1
5b and 16b are the normally closed contact portions 11a and 16b, respectively.
12a and the normally open contact portions 13a, 14a, and is normally connected to the normally closed contact portions 11a,
12a side. Incidentally, the coil ends of the electromagnetic coil 2 are connected to the upper ends of the coil terminals 7 and 8. The contact blocks B and C as described above are arranged and assembled on both sides of the electromagnetic block A, and the means for assembling them will be described in detail. That is, the insulating stands 5 and 6 have the yoke 4 at the upper ends of the opposing inner surfaces.
As support means for supporting the side edges of the horizontal piece 4b, grooves 5a and 6a are provided horizontally in the longitudinal direction, and grooves 5a and 6a are provided horizontally in the upper part of the grooves 5a and 6a at approximately the middle of the grooves 5a and 6a. Tongue pieces 5c and 6c are formed to protrude and have engagement protrusions 5b and 6b on the lower surface side, while engagement windows 4d and 4e are formed near the side edges of the horizontal piece 4b of the yoke 4. We have established
Therefore, the contact blocks B and C are constructed by fitting the side edges of the horizontal yoke pieces 4b into the grooves 5a and 6a of the insulating stands 5 and 6, and connecting both ends of the yoke to the flanges 3b and 6a of the bobbin 3, respectively. The tongue piece 5 is in contact with the tongue piece 3c.
The protrusions 5b and 6b of c and 6c are connected to the horizontal piece 4b of the yoke.
It is assembled by fitting and engaging the windows 4d and 4e. Note that by extending the tips of the tongues 5c, 6c further than the protrusions 5b, 6b, the connected state can be made more secure. In the coupled state as described above, the contact blocks B and C are connected to the yoke 4 of the grooves 5a and 6a and the protrusions 5b and 6b in the longitudinal direction in relation to the electromagnetic block A. Due to the engagement of
Similarly, for outward separation, the groove 5
a, 6a and the protrusions 5b, 6b to the yoke, the bobbin flange 3 is further inwardly moved.
By abutting both ends of the insulating stands 5 and 6 against b and 3c, a state in which they are regulated and assembled in a reliable positional relationship is obtained. Next, 17 is omitted〓
It is a movable iron piece which is bent into a shape and supported by protrusions 4f, 4f provided at the ends of the horizontal yoke piece 4b at the bending part, with the vertical piece 17a facing the end face 1b of the iron core 1. A pusher 18 is attached to the free end of the piece 17b, and both ends 18a, 1 of the pusher 18 are attached to the free end of the pusher 18.
8b is the movable contact plate 1 of the contact blocks B and C.
5, 16, and therefore,
Due to the excitation of the electromagnetic block A, the vertical piece 17
a is absorbed into the core end face 1b, the pusher 18
Both ends 18a and 18b of the movable contact plate 1
5 and 16 are pushed up to bring the movable contact portions 15b and 16b into contact with the normally open contact portions 13a and 14a. Of course, when the electromagnetic block A is demagnetized, the movable iron piece 17 is returned to its original state by the restoring force of the movable contact plates 15 and 16, and at the same time the movable contact plates 15 and 16
5b and 16b come into contact with the normally closed contact portions 11a and 12a. The pusher 18 is made of a resin material and has a cross-section shape, and the upper piece 18
A protrusion 18d is provided on the lower surface side of the movable iron piece 17, and a window hole 1 is provided at the free end of the movable iron piece 17.
7c are provided, and the upper and lower pieces 18 of the pusher 18
c, 18e to sandwich the free end of the movable iron piece 17, and the protrusion 18d to fit into the window hole 1.
7c and is attached to the movable iron piece 17. Reference numeral 19 is made of a thin plate-like spring material, bent into a square shape, and attached to the ends of the contact blocks B and C at the vertical piece 19a, and a through hole 1 provided at the end of the horizontal piece 19b.
This is a pressing spring that prevents the movable iron piece 17 from detaching by fitting into the protrusion 17d provided on the upper surface side of the proximal end of the horizontal movable iron piece 17b into the movable iron horizontal piece 17b. The pressing springs 19 are formed by cutting out the center part of the vertical piece 19a, and each has outward elasticity 2.
The leg pieces 19d, 19d are formed, and an engaging step portion 19 is formed on the outer side of the lower end of the leg pieces 19d, 19d.
In addition, vertical grooves 5d and 6d are formed on the opposing inner surfaces of one end of the insulating bases 5 and 6 of the contact blocks B and C, respectively, and these vertical grooves 5d and 6d are provided. Engagement step portions 5e and 6e are provided at the lower part within the vertical groove 5.
Insert the side edges of the leg pieces 19d, 19d of the pressing spring into the legs 19d, 19d from above into the leg pieces 19d, 19d.
Due to the elasticity of d, the engagement step portions 19e, 19 of this leg piece
e is the engagement step portion 5e, 6e in the longitudinal groove 5d, 6d.
It is attached by engaging with the Incidentally, bent pieces 19f, 19f are provided on both sides of the pressing spring vertical piece 19a, and by fitting these bent pieces 19f, 19f into the vertical grooves 5d, 6d, the leg piece 1
The side edges of 9d and 19d are designed to absorb looseness when they are fitted into the longitudinal grooves.

In the present invention, as described above, contact blocks B, C, and movable iron piece 17 are connected to electromagnetic block A, and contact mechanism D, which functions as a relay, is constructed as an integrated block.

In addition, 20 is a case which accommodates the said contact mechanism part D and each terminal was made to protrude from the lower surface side, 21 is a lid body which closes this case 20.

In the above embodiment, two contact blocks B and C are coupled to the electromagnetic block A to form a so-called two-pole configuration, but only one of the contact blocks B or C is coupled to form a single-pole configuration. Alternatively, as shown in FIG. 8, common terminals 9 and 10 of both contact blocks B and C, normally closed contact terminals 11 and 12, and normally open contact terminals 13 and 1 may be used.
By configuring the upper end bent portions of each of the capacitors 4 and 4 to be continuous with each other, it is also possible to construct a single-pole type with double capacity.

Next, FIGS. 9 to 11 show other embodiments of the relationship between the insulating base 5 and the yoke 4 of the contact block B according to the present invention, and FIG. 9 shows a tongue formed on the insulating base 5. An engagement recess 5b ₁ is provided in the piece 5c, and the engagement recess 5b ₁ is engaged with an engagement protrusion 4d ₁ provided on the yoke 4.
Fig. 0 shows that recesses 5a ₁ and 5a ₁ are provided at both ends of the insulating stand 5 as a support means for the yoke 4, into which the side edges of the yoke 4 are fitted, and Fig. 11 further shows the support means for the yoke 4. As shown in _FIG.
This figure shows a configuration in which a side edge of the yoke 4 is held between the stepped portion 5a ₂ and the tongue piece 5c.

Furthermore, it goes without saying that the means for coupling the contact blocks B and C to the electromagnetic block A may be modified in addition to those shown in the above embodiment.

Since the present invention is constructed as described above, the assembly work of connecting the contact blocks B and C to the electromagnetic block A does not require any joining member, and only requires a simple press-fitting operation, and the work efficiency can be greatly improved. In addition, in the work process, each block is manufactured in a separate process and then connected in the final process, making it suitable for assembly line work.Furthermore, each block can be shared by relays with different ratings for inventory management. It achieved various practical effects.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view, Fig. 2 is a longitudinal sectional front view, Fig. 3 is a longitudinal sectional side view of the main parts of this invention, Fig. 4 is a longitudinal sectional side view with the presser spring attached, and Fig. 5 is the same front view. Figure 6 is a vertical cross-sectional view of the movable iron piece and pusher;
FIG. 7 is a perspective view of the same, FIG. 8 is a perspective view showing another embodiment of the contact mechanism section, and FIGS. 9 to 11 are perspective views showing other embodiments of the main part of the present invention. In the figure, A is an electromagnetic block, B and C are contact blocks, D is a contact mechanism, 1 is an iron core, 2 is an electromagnetic coil, 3 is a bobbin, 4 is a yoke, 4d and 4e are engagement means, and 5 and 6 are Insulating stand, 5a, 6a are supporting means, 5
b and 6b are engagement means, and 5c and 6c are tongue pieces.

Claims (1)

[Claims] 1 A horizontal piece of the yoke is placed along the length of the bobbin around which the coil is wound, and the bobbin is fixed to the vertical piece of the yoke with an iron core. A coil terminal, a common terminal to which a movable contact plate is fixed, and a contact block in which a contact terminal is integrally molded are placed on the base, and a groove into which the side edge of the horizontal piece of the yoke is fitted and supported is placed on the insulating base. and a tongue piece is formed on the upper surface of the horizontal piece of the yoke and has a protrusion that engages in a concave manner with the engagement window formed on the small flat piece of the yoke, and the tongue piece is formed in the groove. The contact block and the electromagnetic block are integrally connected by fitting the horizontal piece of the yoke and engaging the protrusion of the tongue piece with the engagement window of the horizontal piece of the yoke. A small relay characterized by: