JPS6237002A - Rail mounting construction of control appliance - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to rail-mounted control equipment. More specifically, the present invention relates to the structure of a control device that allows control devices such as an electromagnetic contactor and an electromagnetic relay to be attached to a rail.

[Background of the invention]

As a conventional technology for rail-mounted control equipment, Japanese Patent Application Laid-open No. 59
There is a known technique disclosed in Japanese Patent No.-127324.

The known technology includes an elastic locking piece that has a tip claw on the inside of the tip that engages with the side edge of the rail and a bending operation piece on the outside of the tip, on the side edge of the mounting surface of a relay that is a rail-mounted control device. A bending tool insertion hole is provided in the bending operation piece. Then, a tool such as a driver is inserted into the bending tool insertion hole, the elastic locking piece is bent outward with the tool, the rail is housed in the tip claw, and then the tool is loosened to bend the elastic locking piece outward. By utilizing the elastic force of the relay, the tip claw moves and locks onto the side edge of the rail, thereby making it possible to easily attach the relay to the rail and also to suppress an increase in the number of parts. It is configured.

However, due to the elastic force of the elastic locking piece, the tip claw
Since it is also possible to move in a direction perpendicular to the width direction of the rail, that is, in a direction toward the fixed surface of the rail, there is a risk that the relay may be attached unstablely even if it engages with the rail.

This kind of problem.

When the length of the elastic locking piece is long, the movable range of the tip claw also becomes large, which is especially noticeable and results in poor reliability.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rail-mounted control device that can be easily and reliably attached to a rail, thereby increasing reliability. be.

[Summary of the invention]

In the present invention, a fixed engagement claw is formed at one end of a mounting part of a control device to engage with one side edge of a rail fixed to a rail fixing surface, and a fixed engagement claw is formed at the other end of the mounting part to extend toward the rail. and an elastic movable piece having an engaging claw that engages with the other side edge of the rail is formed at the tip, and a regulating member is provided at the mounting part to restrict movement of the first elastic movable piece in the direction toward the rail fixing surface. It is characterized by the fact that the above object can be achieved.

[Embodiments of the Invention] The details of the present invention will be described below with reference to the accompanying drawings. 1st
1 to 14 show an embodiment in which the present invention is applied to an electromagnetic contactor.

In the figure, 1 is a case of an electromagnetic contactor, and 2 is a rail.

The mounting rail 2 is fixed to a rail fixing surface 100 as shown in FIGS. 2 and 14. As shown by chain lines in FIGS. 1, 2, and 4, this rail 2 has side edges 21 and 22 extending outward along the longitudinal direction on both sides, and has a hat-shaped cross section. ing.

As shown in FIGS. 1 and 2, the case 1 is a thermoplastic resin molded product and has a substantially hollow box shape, and a plurality of terminal mounting screws 3 are screwed on both sides of the upper part of the case 1. At the same time, an electromagnet 4 is installed inside the lower part.

Furthermore, a mounting portion 11 for mounting on the rail 2 is formed at the bottom of the case 1. As shown in FIGS. 3 and 4, the mounting portion 11 includes a seat 12 that projects slightly downward from the inner circumference of the bottom of the case 1, and a seat 12 that projects downward from the seat 12 on both side edges of the bottom of the case 1. and has a concave shape with protrusions 13 and 14 for regulating the width of the rail 2.

A fixed engagement claw 15 is formed at one end of the mounting portion 11, and an elastic movable piece 16 is formed at the other end.

That is, as shown in FIGS. 3 and 4, the fixed engagement pawl 15 is provided to protrude inward from the tip of the central portion of the protrusion 13, and engages with one side edge 21 of the rail 2. It is now possible to do so. The elastic movable piece 16 is shown in FIGS.
As shown in the figure, an elastic plate 16a is disposed in a notch 19 provided at the center of the protrusion 14, and is integrally connected to the side wall of the case 1 and extends downward. It has a movable plate 16b that projects inward and has a wide tip and an engagement claw 16c that can engage with the other side edge 22 of the rail 2. The engaging claw 16c is connected to the movable plate 16 as shown in FIGS. 3, 5 to 9.
The neck portion 16d formed at the tip of b protrudes inward.

The rail 2 is formed in a tapered shape whose wall thickness becomes thinner toward the tip, so that when the other side edge 22 of the rail 2 comes into contact with the mounting portion 11, it can engage with the side edge 22. .

Therefore, by engaging the fixed engagement claw 15 with one side edge 21 of the rail 2 and engaging the engagement claw 16c with the other side edge 22, the case 1 can be attached to the rail 2. It looks like this. In FIGS. 5 to 8, 12a and 12b are protrusions and recesses provided at the center of one end of the seat 12 of the mounting portion 11.

Therefore, the elastic movable piece 16 is movable in the width direction A of the rail 2 by its elastic force, and the engaging claw 16c
is movable in the direction B toward the rail fixing surface 100 by the elastic force of the movable plate 16b of the elastic movable piece 16, so even if the engagement claw L6c engages with the other side edge 22 of the rail 2, the case 1 will not move. There is a risk that it may be attached unstablely to the rail 2.

Therefore, in this embodiment, a regulating plate 5 is attached to the mounting portion 11 to regulate the movement of the elastic movable piece 16 in the direction B toward the rail fixing surface 100.

That is, as shown in the perspective view in FIG. It consists of an insertion hole 53 bored in the main body 51 and wing parts 54 formed on both sides of one end of the main body 51.

The notch 52 is formed in a substantially square shape in the center of one end of the main body 51, and can be engaged with the notch recesses 16e formed at both ends of the engagement claw 16c. The cutout recess 16e is formed by cutting out the upper surface of both ends of the engaging claw 16c to have approximately the same thickness as the main body 51.

The insertion hole 53 has a size that allows insertion and engagement with the tip end 16f of the elastic plate 16a, and allows a tool such as a screwdriver to be inserted therethrough.

The wing section 54 extends laterally on both sides of one end of the main body 1, and includes a first wing 54a and a first wing 54a.
It consists of a second wing 54b that is disposed closer to the other end and has a narrower width than the first wing 54a, so that it can engage with the guide groove 18. Guide groove 1
8 is a case mounting portion 11 as shown in FIGS. 5 and 6.
First grooves 18a are formed at opposing positions of the protrusions 14 and 14 by the protrusions 14 and the protrusions 12a of the seat 12, and are engageable with the first wings 54a. and,
It consists of a second groove 18b formed at a position closer to the outside of the protrusion 14 and capable of engaging with the second wing 54b, and both are attached along the width direction A of the rail.

This regulation plate 5, as shown in FIGS. 12 and 13,
When the neck 16c of the elastic movable piece 16 is inserted into the notch 52 and rotated toward the mouth while being pressed in the A direction, the 11th
As shown in the figure, the tip 16d of the elastic movable piece 16 is inserted into the insertion hole 53, and the main body 51 is engaged between the tip 16d and the engagement claw 17, and a pressing force in the A direction is applied. When released, the elastic movable piece 16 is elastically restored in the opposite direction to the convex direction, and the wing portion 54 is engaged with the guide groove 18 as shown in FIG. The engaging claw 16c can be guided in the direction A, and the engaging claw 16c can be guided in the direction B that crosses the width direction A, that is, the direction B toward the fixing surface 100.
It is now possible to restrict movement.

Therefore, when the regulating plate 5 is assembled, the first wing 54 of the regulating plate 5
the length Q of the first wing 54a and the recess 1 formed in the seat 12 so that the first wing 54a can be engaged with the first groove 18a of the guide groove 18;
The depth Ql of 2b is set to satisfy the relationship Qo<Q+.

Further, when the regulating plate 5 engages with the elastic movable piece 16, the side portions 51a and 51b on both sides of the notch 52 engage the engaging claw 16c.
By engaging with the notch recess 16e, the engaging claw 16c
Therefore, the movement in the direction B can be more reliably regulated.

The rail mounting structure of the embodiment has the above-described configuration, so in order to mount the case 1 to the rail 2, first, the fixed engagement claw 15 of the case 1, on which the regulating plate 5 has been assembled in advance, is connected to the rail 2. It is locked to one side edge 21. And the 14th
As shown in the figure, when the engaging claw 16c of the case 1 is pressed against the rail 2 in two directions, the other side edge 22 of the rail 2 hits the tapered surface of the engaging claw 16c, and the elastic movable piece 16 presses against the regulating plate 5. As it deforms outward while being guided, the engaging claw 16c rides over the other side edge 22 of the rail 2, and the elastic movable piece 16 elastically restores its shape, causing the engaging claw 16c to engage with the other side 822. The case 1 is then attached to the rail 2.

The result is an elastic tube! The restriction plate 5 engages with the IJ piece 16 and the mounting portion 11, and the restriction plate 5 restricts the movement of the elastic plate 16a and the movable plate 16b in the direction B toward the rail fixing surface 100, so that the engagement is prevented. The movement of the claw 16c can be restricted, and therefore the engaging claw 16c and the other side edge 22 can be reliably engaged. Moreover, the regulation plate 5 is
6c, and more reliably and firmly restricts the movement of the engaging claw 16c in the direction B toward the fixed surface 100, so that the above-mentioned engagement can be made even stronger.

Therefore, the case 1 is not attached to the rail 2 unstably as in the conventional case, and the case 1 is engaged simply by pressing the engagement claw 16c against the other side edge 22, so the case 1 can be attached easily. It can be carried out.

In addition, when removing the case 1 from the rail 2, insert a tool such as a screwdriver into the insertion hole 53 of the regulation plate 5 assembled to the case 1, and insert the regulation plate 5 in the width direction A.
When pulled outward, the elastic movable piece 16 is deformed by elastic force and is guided by the regulating plate 5, so that the engaging claw 1
6c comes off from the other side edge 22 of the rail 2.

Next, by removing the fixed engagement claw 15 of the case 1 from the one side edge portion 21 of the rail 2, the case 1 can be removed.

Therefore, by pulling the regulating plate 5 outward, the engaging claw 17
Since the case 1 can be disengaged from the other side edge 22, the case 1 can be easily removed from the rail 2.

FIG. 15 shows a second embodiment of the invention.

This embodiment differs from the first embodiment in that in order to restrict the movement of the elastic movable piece 16 in the direction B toward the rail fixing surface 100, a columnar restriction body 5' is attached to the mounting portion 11 of the case 1.
It is located at the point where the is installed.

That is, as shown in FIG. 15, the columnar regulating body 5' is formed into a prismatic shape, and one end thereof is connected to the groove 14a provided on the bottom surface of one of the protrusions 14 of the mounting portion 11, and the other end thereof is formed in a prismatic shape. The end portion is fitted into the groove 14b provided on the other bottom surface of the protrusion 14, and the elastic movable piece 16 is movable.By abutting against the plate 16b, the movable plate 16b moves in the direction B toward the rail fixing surface 100. I'm trying to control my movements.

Note that although this columnar regulating body 5' is attached by being fitted into the protrusion, it may be fixed using an adhesive, a welding agent, or the like. Therefore, the grooves 14a and 14b are each formed in a shape corresponding to the columnar regulating body 5', with a depth extending from the bottom surface of the protrusion 14 to a position corresponding to the bottom surface of the movable plate 16b.

Further, a frame 16g is formed on the elastic movable piece 16 in order to release the engagement between the engagement claw 16c and the other side edge 22 of the rail. The frame 16g is protruded from the outer wall surface of the lower part of the first elastic plate 16a and has a U-shape, and when a tool such as a screwdriver is inserted and pulled outward.

The engagement claw 16c can be disengaged from the other side edge 22 of the rail 2.

Therefore, in this embodiment, in addition to being able to basically obtain the same effects as the first embodiment, the grooves 14a and 14bti-ff15 for attaching the columnar regulating bodies 5' can be made into a simple shape. Compared to the first embodiment, the mold structure can be simplified accordingly.

〔Effect of the invention〕

As described above, according to the present invention, since the regulating member is configured to be able to restrict the movement of the elastic movable piece in the direction toward the rail fixing surface, the engagement between the elastic movable piece and the other side edge of the rail is prevented. can be carried out reliably. Therefore, according to the present invention, since the control equipment can be reliably and firmly attached to the rail, reliability can be increased accordingly.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment in which the rail mounting structure for a control device of the present invention is applied to an electromagnetic contactor, FIG. 2 is a front view of the electromagnetic contactor, and FIG. 3 is a bottom view of the electromagnetic contactor. Figure 4 is a sectional view taken along line IV-IV in Figure 2, Figure 5 is an enlarged view of part 0 of Figure 3 with the regulation plate removed, and Figure 6 shows the assembly of the regulation plate in the 5th section in the state. Figure 7 is a cross-sectional view taken along the line ■-■ in Figure 5, Figure 8 is a cross-sectional view taken along the line ■-■ in Figure 5, and Figure 9 shows the elastic movable plate shown below. FIG. 10 is a perspective view of the regulation plate; FIG. 11 is a perspective view showing the state of engagement between the elastic movable plate and the regulation plate; FIG. 12 is an explanatory diagram showing the assembly of the regulation plate; Figure 13 is xln- of Figure 12.
FIG. 14 is a broken sectional view showing the attachment of the electromagnetic contactor to a rail, and FIG. 15 is a perspective view of essential parts showing a second embodiment of the present invention. 1... Case of electromagnetic contactor, 2... Rail, 21.
... One side edge, 22 ... Other side edge, 15 ... Fixed engagement claw, 16 ... Elastic movable piece, 5 ... Regulation plate, 5
′...Column-shaped regulating body, rail fixing surface. Representative Patent Attorney Tadashi Akimoto Figure 1 Figure 3 Figure 4 Figure 5 Figure 6 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15

Claims (1)

[Claims] A fixed engagement pawl is formed at one end of the mounting part of the control device to engage with one side edge of the rail fixed to the rail fixing surface, and a fixed engagement claw is formed at the other end of the mounting part that extends toward the rail and has a distal end. An elastic movable piece having an engaging pawl that engages with the other side edge of the rail is formed, and a regulating member is provided at the mounting portion to restrict movement of the elastic movable piece in the direction toward the rail fixing surface. Features a rail mounting structure for control equipment.