JPH0222481B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a rail mounting device for mounting relays and other equipment to a mounting rail.

[Background technology]

Conventionally, as a structure for attaching electrical equipment such as relays to a mounting rail with a hat-shaped cross-section, a structure has been proposed in which a spring and a movable member are provided in the case of the equipment to lock the rail (for example, Utility Model No.
No. 111764 and Japanese Patent Publication No. 56-063716). but,
The disadvantages were that the number of parts increased and the size increased, and that integral molding using a mold was not easy.

[Purpose of the invention]

An object of the present invention is to provide a compact rail mounting device that is easy to integrally mold using a mold, has a small number of parts, and is compact.

[Disclosure of the invention]

In the rail mounting device of the present invention, width regulating protrusions are formed on opposite sides of the bottom of the box to form a rail intervening groove, and the width regulating protrusions on one side are made to protrude toward the other side for mounting. In the rail mounting device, a locking piece is formed for locking one piece of the rail, and a hook part is interposed for dividing the width regulating protrusion on the other side and hooking it to the other piece of the mounting rail. a plurality of hanging pieces hanging from the bottom surface substantially parallel to the side surface of the other side of the box, a connecting piece connecting the ends of the hanging pieces, and a connecting piece formed between the hanging pieces of the connecting pieces. It is composed of a hook piece that protrudes toward the one side and hooks the other piece of the mounting rail, and an operation part formed on the connection piece.

According to the configuration of the present invention, the box can be attached to the mounting rail by locking the locking piece to one piece of the mounting rail and hooking the hook portion to the other piece of the mounting rail. In this case, even if the difference between the width of both pieces facing the bottom of the box and the width of the rail is small, the elasticity of the hook can be ensured by the multiple hanging pieces hanging approximately parallel to the sides of the box. Therefore, rail installation can be performed reliably. In addition, since the hook piece is formed as a connecting piece between the hanging pieces, the molding die can be inserted from the side between the hanging pieces, so side cores can be used for the upper and lower molds without providing a mold extraction opening in the vessel body. As a result, it becomes possible to easily integrally mold the hook piece, and the number of parts can be reduced to realize a compact rail mounting device.

Note that if a guide groove is formed on the side of the box opposite to the operating section formed on the connecting piece, the operating section can be operated by engaging a jig such as a screwdriver in the guide groove, making it easy to engage and disengage the box. In addition, since the amount of rotation of the jig is restricted by the side surface of the box and the hanging piece is not bent significantly, it is possible to prevent the hanging piece from breaking.

An embodiment in which the present invention is applied to a relay is shown in FIGS. 1 to 8. First, the rail mounting device will be explained with reference to FIGS. 1 to 3. In the figure, reference numeral 12 denotes a box for a relay to be attached, which is molded from an elastic thermoplastic resin. Width regulating protrusions 60, 61 are formed on both sides of the lower surface which serves as the mounting surface of the box 12, and the interval between both width regulating protrusions 60, 61 is such that a mounting rail 62 with a hat-shaped cross section is fitted. It is formed to a width of Two locking protrusions 63 are provided on the tip side edge of one of the width regulating protrusions 30, and the locking protrusions 63 and the width regulating protrusions 60 form a fixed locking part 64. The other width regulating protrusion 61 is notched in the center,
A hook-shaped hook portion 65 is provided protruding from the notch portion. The hook part 65 is integrally molded with the box 12 from the same material as the other parts. Hook part 6
Reference numeral 5 denotes a plurality of hanging pieces 65c hanging from the bottom surface substantially parallel to the side surfaces of the box 12, a connecting piece 65b connecting the tips of the hanging pieces 65c, and this connecting piece 65b.
It consists of a hook piece 65a formed between the hanging pieces 65c and hooked to the other piece 62b of the mounting rail 62, and an operation part 66 having a hole formed in the connecting piece 65b as an example, and the side surface shape as a whole is It is formed into a T-shape. The operating portion 66 is formed into a slit shape into which the tip of a driver can be inserted. Hook part 6
The side wall of the box 12 on the side where the box 12 is provided with a guide groove 67 with a tapered bottom surface corresponding to the operation section 66 is provided.
is formed.

With this configuration, one piece 62a of the mounting rail 62 is locked to the locking piece 64 as shown in FIG.
A driver 68 is inserted into the operation part 66 of the hook part 65, and the hook part 65 is bent outward by the driver 68. In this way, the distance between the locking piece 64 and the hook portion 65 is widened, and the other piece 62b of the mounting rail 62 is housed within the hook piece 65 of the hook portion 65. Then, by relaxing the force applied to the driver 68, the hook portion 6
5 returns due to its elasticity and locks the other piece 62b of the mounting rail 62. In this way, the driver 68
By bending the hook portion 65 using a screw, it is possible to easily attach the hook portion 65 to the attachment rail 62.
Further, since the hook portion 65 is integrally provided with the box 12, there is no increase in the number of parts and the device is compact.

Next, the internal structure of the relay will be explained with reference to FIGS. 4 to 8. This relay is a polarized electromagnetic relay, and the basic structure is shown in Figure 4. 1st
The yoke 1 has left and right pieces 2, 3, and the left and right pieces 2,
3 are connected in a U-shape, and the left and right side pieces 2 and 3 have inner surfaces thereof serving as polarized surfaces 2a and 3a. The second yoke 5 has a length shorter than the distance between the left and right pieces 2 and 3 of the first yoke 1, and faces the horizontal piece 4. The left and right outer surfaces of the second yoke 5 serve as armature surfaces 5a and 5b. The permanent magnet 6 is interposed between the first yoke 1 and the second yoke 5, and its magnetization axis direction is perpendicular. The first and second yokes 1 and 5 and the permanent magnet 6 are arranged one above the other as one block. The armature 7 is of a horizontal transition type, and is formed into an H shape with left and right side pieces 8 and 9 and a horizontal bar 10 that connects the left and right side pieces 8 and 9. Both sides are polarized surfaces 8a, 8b, 9
a, 9b. The inner and outer contact surfaces 8a, 8b, 9a, 9b of the left and right side pieces 8, 9 are the first and second
Inner and outer contact surfaces 2a, 3a, 5a, 5 of yokes 1, 5
Air gaps a, b, c, and d are formed facing air gap b. The horizontal rod 1 of Amachiya 7 is installed in the coil 11.
0 is passing through. In addition, in FIG. 4, the solid line X is the magnetic flux of the permanent magnet 6, and the dotted line Y is the magnetic flux of the coil 1.
It is the magnetomotive flux of 1.

5 to 8 embody the basic principle of FIG. 4.

The upper and lower first yokes 1 are housed in a box 12 made of synthetic resin and having an open top.

In this case, the upper and lower first yokes 1 are 90 mm from Fig. 4.
In the rotated state, it sits on the bottom wall 13 of the box 12, and the left side piece 2 and the horizontal piece 4 are in contact with the side wall 14.

The winding frame 15 of the coil 11 has the following structure.

The coil 11 is wound around a winding trunk 16, and the winding trunk 16 has a hole 17 through which the armature 7 passes.
Side walls 18 and 19 are formed integrally with the winding drum 16 on the left and right sides, and the upper and lower second yokes 5 run parallel to the coil 11 between the left and right side walls 18 and 19, rotated by 90 degrees from FIG. is fixed. The left and right side walls 18 and 19 are provided with cutouts 20 to facilitate fitting and fixing of the second yoke 5. Also,
The right side wall 19 is provided with a groove 21 for inserting and installing a receiving blade terminal fitting 22 to which the coil 11 is connected.

A cover 23 made of synthetic resin is placed over and fixed to the upper opening of the box 12. An insulating plate 24 is interposed between the cover 23 and the box 12.

This cover 23 has the following structure.

The cover 23 connects an upper wall 25, a side wall 26 including lowered side walls, this upper wall 25 and the lower both sides walls 26, and an external separate 27 which is divided into a plurality of parts, and an external separate 27 which is the same as this external separate 27. the internal separate 28 of the position and the internal separate 2
8 and a lower opening cavity 29 that crosses the two.

External terminal fittings 3 are provided in both outer chambers divided by both side walls 26 and external separates 27 of the cover 23.
It is fixed at 0. This terminal fitting 30 has vertical plug blades 31 integrally formed on both sides of the rightmost end.
When the cover 23 and box 12 are combined, it is inserted into the receiving blade terminal fitting 22 of the coil winding frame 15 to complete electrical connection with the coil 11. The other terminal fitting 30 is provided with a fixed contact 32, which is located in internal chambers 33 on both sides divided by an internal separate plate 28.

Further, in the cavity 29 of the lower opening of the cover 23, a movable base 34 is located which moves parallel to the armature 7 made of synthetic resin.

This movable base 34 has a through-hole 35 formed at a position corresponding to the inner chamber 33 of the cover 23, and a contact plate 36 with protruding contacts 37 on both sides and a coil for contact pressure are installed here. A spring 38 is provided. The contact point 37 of the movable table 34 and the contact point 32 of the cover 23 face each other in the inner chamber 33, and are separated when the movable table 34 moves.

The movable base 34 is prevented from falling by the insulating plate 24 described above.

The movable table 34 and the armature 7 are connected by a reversing lever 39.

The reversing lever 39 has a shaft 40 passed through its center, and this shaft 40 is inserted into the shaft hole 4 of the right side wall 19 of the coil winding frame 15.
Supported by 1.

In the relationship between the reversing lever 39 and the armature 7, a shaft 42 is passed through its lower end, the shaft 42 is fitted into the groove 44 of the connecting body 43 from above, and the right end of the armature 7 is inserted into the connecting body 43 to apply the force. It is deformed under pressure and becomes a retaining portion 7b.

The left end of the armature 7 is similarly inserted into the left piece 8 and deformed under pressure to form a retaining portion 7a. At the same time as this prevention, non-magnetic residual plate 45
intervene. This plate 45 is provided to cut both ends of the magnetic characteristic curve of the permanent magnet 6 and to use the most stable range.

In the relationship between the reversing lever 39 and the movable base 34, the upper end 39a thereof is hooked into a cutout 46 of the lower opening.

Therefore, if the armature 7 moves horizontally to the right as indicated by arrow Z in FIG.
9 rotates counterclockwise around a central shaft 40, and the movable base 34 horizontally moves to the left as indicated by an arrow V opposite to the armature 7, and the contacts 32 and 37 of each chamber are joined. The bonding is maintained by the magnetic flux of the permanent magnet 6 according to the principle diagram shown in FIG.

The armature 7 is pressed in the direction of arrow Z by a chevron-shaped flat spring 47. This mountain-shaped flat spring 47 has its top portion 47a in contact with the left side retaining portion 7a of the armature 7, and both ends 47b in contact with the left side wall 14 of the box 12.

The movable base 34 is biased by a coil spring 48 in a direction opposite to the direction of arrow V. This coil spring 4
8 is located between the display column 49 of the movable base 34 and the left side wall 26 of the cover 23.

The spring pressures of these two springs 47 and 48 act on the armature 7 and the movable base 34 in opposite directions, so that the armature 7 attempts to move from the state where it is attracted by the magnetic flux of the permanent magnet 6 to the opposite direction. This makes it easier to separate when doing so.

The display column 49 of the movable table 34 is located on the upper wall 2 of the cover 23.
It protrudes from the small hole 50 of No. 5, and the internal operation can be confirmed from the outside at that position.

The upper wall 25 of the cover 23 further includes a terminal cover 5.
1 covers. This terminal cover 51 has driver operation holes 53 for terminal screws 52 in number corresponding to the terminal fittings 30 on both sides.

Also, to install it, put out the hook feet 54 on both sides,
It is inserted into the small hole 55 of the upper wall 25 of the cover 23. Furthermore, covers 23 are provided on both sides of the terminal cover 51.
The terminal fitting 30 is located between the external separators 27 of
A skirt 56 hangs down to minimize exposure.

As described above, in this embodiment, the distance between the center of the winding drum 16 and the center of the amphitheater 7 is made wider than the distance between the end of the winding drum 16 and the end of the amphitheater 7. By winding the coil 11 around the winding trunk 16, even if the central part of the winding trunk 16 bends inward, a gap can be secured between the winding trunk 16 and the armature 7, which prevents movement of the armature 7. It won't happen.

[Effects of the Invention] The rail mounting device of the present invention has a plurality of hanging pieces hanging approximately parallel to the sides of the box, even if the difference between the width of both pieces facing the bottom of the box and the width of the rail is small. Since the elasticity of the hook portion can be ensured, rail attachment can be performed reliably. In addition, since the hook piece is formed as a connecting piece between the hanging pieces, the molding die can be inserted from the side between the hanging pieces, so side cores can be used for the upper and lower molds without providing a mold extraction opening in the vessel body. This has the effect that the hook piece can be easily integrally molded, and the number of parts can be reduced to realize a compact rail mounting device.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the relationship between a relay and a rail to which the present invention is applied, Fig. 2 is a perspective view of its elastic locking piece, Fig. 3 is a partially cutaway side view thereof, and Fig. 4 is the same. Figure 5 is a cross-sectional view showing the specific structure of the relay, Figure 6 is a cross-sectional side view of Figure 5, Figure 7 is a vertical cross-sectional plan view of Figure 5, and Figure 8 is a diagram of the basic principle of the relay. It is an exploded perspective view of the same relay. 7... Amature, 11... Coil, 12... Box, 15... Winding frame, 60, 61... Width regulating protrusion, 62... Mounting rail, 63... Locking protrusion, 6
4... Locking piece, 65... Hooking part, 65a... Hooking piece, 65b... Connecting part, 65c... Hanging piece, 66
...Operation section.

Claims (1)

[Scope of Claims] 1. Width regulating protrusions are formed on opposite sides of the bottom of the box to form a rail intervening groove, and the width regulating protrusions on one side are made to protrude toward the other side to form a mounting rail. In the rail mounting device, a locking piece for locking one piece is formed, and a hook part is interposed for dividing the width regulating protrusion on the other side and hooking it to the other piece of the mounting rail, wherein the hook part a plurality of hanging pieces hanging down from the bottom surface substantially parallel to the side surface of the other side of the box, a connecting piece connecting the ends of the hanging pieces, and a connecting piece formed between the hanging pieces of the connecting pieces, A rail mounting device comprising a hook piece that projects toward one side and hooks the other piece of the mounting rail, and an operating section formed on the connection piece. 2. The rail mounting device according to claim 1, wherein a guide groove is formed on the other side of the box to face the operating portion formed on the connecting piece.