JPS63276846A - Saturation reactor for thermal relay - Google Patents

Abstract

PURPOSE:To make mechanical strength of reactor installation sufficient and aim at making a control panel compact by containing a main body of a saturation reactor in a case injecting injection resin to cover a charge part and hardening it, and installing the saturation reactor in the surface of a base of a control panel or the like. CONSTITUTION:For assembling a saturation reactor, a main body 10 of a saturation reactor is contained in a case 11 with its leads 5 pulled out of the case, and then injection resin 12 is injected to cover a charge part of the main body 10 from an open face of the case 11 and hardened. It is then installed in the surface of a base of a control panel or the like, not illustrated, by means of an installation part 11F and a screw penetrating a screw hole 11G formed in the installation part, an engagement part 11B of this installed saturation reactor is engaged to be connected with the surface of the base in a direction crossing it, and the leads 5 are used for electrically connecting the saturation reactor with each heater of a thermal relay respectively in parallel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an improvement in a saturation reactor for a thermal relay.

[Conventional technology]

Like motor y, which starts with a load of large inertia,
For a mode that requires a long time to start, a thermal relay based on Il operates at the time of starting, so it may not be able to provide appropriate protection characteristics.

In such a case, by connecting a saturation reactor V in parallel to each heater of the standard thermal reactor V-,
! 1. The operating characteristics in the W region up to about 200% of the constant current hardly change, and when the T division exceeds this. The saturation reactor iron core is saturated, the flow to the reactor is increased, and the flow to the heater is restricted to violate the operating time limit.

Figure 4 shows a conventional saturation reactor V used for this purpose. In the middle (1) is fill, (2) is fill (
1) is the core that is linked to the core, and (3) is the core clamp that tightens the core (2) with screws and nuts. (4) is a terminal, (5)
is the lead wire.

This saturated reactor)/I/(A) is used by being screwed to the terminal of the thermal relay (g) using the terminal (4) as shown in FIG.

[Five problems that the invention attempts to solve] By the way, as mentioned above, there are six problems in the past.

During installation, it was necessary to attach terminal (4) directly to the terminal of thermal relay 0, so the reactor μ's IT was applied directly to the thermal relay AzlJ rate (g).

Therefore, the mechanical strength of the terminal mounting portion became a problem.

Also, when the React V is installed on the →Toma M Lee (G), the reactor will protrude irregularly in any direction above all else. The mounting density of the control panel has deteriorated.

Yet again. Because the live parts are exposed, a space is required to maintain an insulating distance 4 between it and other electrical equipment (which in turn reduces the mounting density of the control panel), and there is also a problem in terms of safety against electric shock. was there.

This invention was made to solve the above-mentioned problems, and it is possible to mount the reactor/I/ on the base surface of a control panel, etc., without directly mounting it on the thermal relay, and it also allows the reactor/I/ The purpose is to obtain a saturation reactor with reduced packaging density.

[Means for solving problems]

The saturation reactor for a thermal relay according to the invention of No. 0 has a saturation reactor main body having a winding and an iron core interlinked with the winding, and a mounting portion for attaching to a base surface of a control panel etc. on the outer surface, and A locking portion and a locking portion that can be secured to a locking portion and a locking portion provided in the case of a separate saturation reactor μ are provided so that the reactor can be connected in a direction crossing the base surface. The main body of the 9-saturated reactor is housed in this case, and
The casting resin is poured into a saturation reactor to cover the full part of the reactor body, solidified, and the reactor body is fixed.

[fif friend]

The saturation reactor for thermal relay in this invention is.

It can be mounted on the base surface of a control board, etc. using the parts. A plurality of parts can be connected in a direction intersecting the base surface by using the twisted engagement parts and stop parts.

[Embodiments of the invention]

An embodiment of the present invention will be described below using the first to eighth pieces. That is, in the figure, one head is the saturation reactor body shown in No. 8, which includes a coil (1), an iron core (2) interlinked with this coil (1), and the iron core (2) is tied down with screws and nuts. It consists of an iron core fastener (3) and a lead wire (5). αD accommodates the actor body a1 which is the sum of this L-1. With a resin case made of epoxy resin, polyurethane, etc. - It has a box-like shape with an open surface. (Ha)
This engaging part (IIA) is integrally molded on one outer surface of the case α1, and a convex engaging part (CIIB) is molded on one outer side surface of the case α1. This is a concave locking part that is integrally molded on the outer surface facing the front surface. The engaging portion (IIA) and the locking portion (I
The size, shape, etc. of IB) are taken into consideration so that it can engage respectively with the locking part (IIB) and the engaging part (IIA) formed on the case (B) of six other saturation reactors. (1
10) is the first removal stop protrusion formed on the engaging portion (IIA). A tapered portion that becomes lower toward the bottom is formed on the bottom side of the case (6). (I
ID) is a second removal stop protrusion that is integrally molded on the locking part (IIB). On the open side part of case αυ. A tapered portion is formed which becomes lower by -1 toward the opening direction. C
0W) is the third removal prevention protrusion integrally molded on one end of the locking part CIIB)O, and (IIF) is the mounting part for attaching the saturation reactor to the control panel surface, with a pair of screw holes (
IIG) is formed. In addition, the installation is in the section (11F
)teeth.

It is constructed by also using a part of the locking part (IIB) (the open end surface of the concave open part). Further, (6) is a casting resin injected and solidified into the case αυ.

And this saturation reactor, as shown in Figure 8,
Place the saturation reactor body αG inside the case (6).

The lead wire (5) is stored outside the case (6), and then the casting resin is injected from the open surface of the case αD so as to cover the live part of the saturation reactor body QO and solidified. As a result, it can be assembled easily.

Also, when using it, place it on the base surface of a control panel, etc. that does not point south.
The mounting is done using a screw that passes through the screw hole (IIG) formed in the part (IIF) and the engaging part (II
In A), attach the locking part (II) of the saturation reactor that you wish to connect.
engaging the BI and connecting it in a direction intersecting the base surface;
In addition, connect the saturation reactor V in parallel to each heater of the thermal relay using the lead wire (5), and attach the above-mentioned Since taper portions are formed as shown in FIG.
Easily overcome 1D3. After climbing over, the first removal prevention protrusion (IIC) and the second removal prevention protrusion (IID) engage, and the engaging portion (IIA) engages with the eighth removal prevention protrusion (IID). The concave locking part (IIB) is engaged with the protrusion (IIE) and has an Ω-shaped cross section, and the convex engaging part (IIB) has an Ω-shaped cross section.
Since A) has a shape that engages with this H-shaped cross section, the attachment will not come loose due to vibration or the like.

In addition, in the above embodiment, the locking part CIIB) and the engaging part (IIA) are provided on opposing surfaces of the case α°C, and the mounting is done so that the part CIIF) is also used as the locking part CIIB). However, the locking part (IIB), the engaging part (IIA>, and the mounting part CIIF) do not need to be provided in this way, and in short, when the saturation reactor is installed on the base surface, these parts If multiple saturation reactors are installed so that they can be connected in a direction that intersects with the
The shape etc. does not matter.

[Effects of the Invention] As described above, according to the present invention, there is provided a saturation reactor V main body having one winding and an iron core interlinked therewith.

A mounting section is provided on the outer surface for attachment to the base surface of a control panel, etc., and a separate saturation reactor case is provided so that multiple saturation reactors can be connected in a direction crossing the base surface. When the saturation reactor body is housed in this case, the resin case is equipped with a resin case that is provided with an engagement part and an engagement part that can be engaged with the engagement part. I injected it to cover the live part of the V body, solidified it, and fixed the saturation reactor body, so F! No need to attach to I-wa reactor thermal relay.

It can be attached to the base surface of a control panel, etc. using a section, and therefore the weight of the reactor is not applied to the thermal relay, which solves the problem of mechanical strength when installing the reactor V. Since it is possible to connect several pieces of A/ in the direction crossing the base surface, and the space for the green feed distance 141 between it and other wl'PC equipment is insufficient, The mounting density of the control panel can be improved, and the control panel can be downsized.

In addition, f. Since the iron core and the winding are fixed by the casting resin, there is no vibration or magnetic noise when the tube is energized, and the casting resin covers the live parts of the reactor, improving safety against electric shock.

[Brief explanation of drawings]

Figures 1 to 3 are diagrams related to one embodiment of the present invention, and the first
The figure is a perspective view of the saturation reactor, and FIG. 2 is a perspective view showing a part of the saturation reactor in the middle of connection. Fig. 8 is a perspective view showing the saturation reactor in the middle of assembly, Fig. 11!4 and Fig. 5 are views related to the conventional example, Fig. 4 is a perspective view of the saturation reactor, and Fig. 5 (8) is the saturation reactor. Front view showing the state in which it is attached to the thermal V-, No. 5
Figure (G) shows the same reference numerals in Figure 1g5 and Figure (8) (111 side opening). The same reference numerals in the figure indicate the same or corresponding parts. (6) is the saturation reactor. (G) is the thermal relay, α
O is the saturation reactor body, (B) is the case, (IIA
) is bonded ff1s, CIIB)! , t4X stop, C
IIP) It is installed using cast resin ($13!).

Claims (3)

[Claims] (1) A saturation reactor main body having a winding and an iron core interlinked with the winding, a mounting part for attaching to a base surface of a control panel etc. on the outer surface, and a plurality of saturation reactors intersecting with the base surface. A resin case is provided with an engaging part and a locking part that can be engaged with the locking part and the engaging part provided in the case of a separate saturation reactor so that the saturated reactor can be connected in the same direction. A saturated reactor for a thermal relay, characterized in that a reactor body is housed, and a casting resin is injected to cover the live parts of the saturated reactor body and solidified to fix the saturated reactor body. (2) The engaging portion of the case is provided on a surface opposite to the surface on which the locking portion is provided, and the mounting portion also serves as the engaging portion or the locking portion. A saturation reactor for a thermal relay according to claim 1. (3) A patent characterized in that the case is box-shaped with only one side open, and casting resin is injected from the open part, and the winding leads are drawn out from the casting resin surface. A saturation reactor for a thermal relay according to claim 1 or 2.