JPH0664980B2 - Rail mounting device for electrical parts - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rail mounting device for an electric component when mounting an electromagnetic contactor on a rail.

BACKGROUND ART Conventionally, in a rail mounting device for an electric component such as an electromagnetic contactor of this type, one holding portion of a base of the electromagnetic contactor is generally formed to be movable. However, there is a problem that a screw is used when the holding portion is provided on the base, and the assembly is complicated.

[Object of the Invention] The present invention has been made in view of the above-mentioned point, and an object of the present invention is to provide a rail mounting device for an electric component that facilitates assembly without screws and facilitates assembly. It is a thing.

DISCLOSURE OF THE INVENTION (Structure) In the present invention, a groove formed on both sides of one surface of a base and opposed to one holding portion is provided with grooves open on both sides and an upper surface,
A guide and a positioning guide piece are provided so as to project from the inner wall surface of the groove on the inner side of the base, and recesses are formed in both inner wall surfaces of the ridges located on both sides of the groove so that the groove is formed in the groove direction. A slider that is slidably fitted and provided with an operation portion for operation on the base end side and a spring support portion that has a holding projection for holding the rail at the tip and is raised one step higher than the operation portion side is formed, Provided on both sides of this slider between the bottom surface of the groove and the guide piece are slide pieces for restricting the positioning of the slider in the insertion direction of the slider. On the side face of the spring support portion on the base end side, a protrusion whose upper surface is lower than the protrusion and which protrudes on the side opposite to the slider insertion direction from the inner wall surface of the recess in the outer side of the base is provided. The wire spring placed at the center of the surface was pressed against the opposite side of the slider insertion direction so that both ends of the wire spring were located in both the recesses, and the center of the wire spring was located at the side surface of the protrusion. At the same time, a retaining piece located above the wire spring and having an upper surface lower than that of the ridge is formed on side surfaces of the spring support portion on both sides of the protrusion.

(Example) Hereinafter, the Example of this invention is described with reference to drawings. As shown in FIG. 1, ridges 13 are formed in parallel on both sides of the lower surface of the base 1 of the electromagnetic contactor which is the main body of the electric component. One of the protrusions 13 is formed with a holding protrusion 14 which is engaged and held with one locking piece 2a of the rail 2 which is formed in a substantially U-shaped cross section.
Groove 3 is cut in the width direction on the other protrusion 13,
In the figure, the upper and lower sides will be appropriately reversed to describe the groove 3
Has an open top and both sides. Further, a flat plate-like guide piece 4 is formed so as to integrally face and project from the upper portion of the inner wall surface of the groove 3 from the inside of the base 1. A space is provided between the guide piece 4 and the bottom surface of the groove 3. A positioning step portion 16 for positioning is integrally formed inside the space,
The positioning blade 16 closes the inside of the space. Further, a step portion 15 that is raised one step is formed outside the guide pieces 4 on both sides of the bottom surface of the groove 3, and a projecting portion 19 projecting to the upper surface side of this step portion 15 is integrally projected from the protrusion 13. However, the inner recesses 5 of the base 1 of the protrusions 19 are respectively formed.

The slider 9 is slidably fitted in the groove 3 of the base 1 in the groove direction (inward and outward direction of the base 1), and the lower end of the slider 9 is engaged with the other locking piece 2b of the rail 2. A holding projection 7 for holding the joint is formed. An operating portion 8 having an opening 17 is formed at the base end of the slider 9, and a finger or the tip of a driver is inserted into the opening 17 of the operating portion 8 for operation. Further, a flat plate-shaped slide piece 10 is formed integrally with a side surface of the slider 9 so as to project laterally continuously from the operation portion. This slide piece 10
Is located between the guide piece 4 and the bottom surface of the groove 3. The tip of the slide piece 10 is located on the positioning step 16 of the guide piece 4.
In order to prevent the slider 9 from entering the inside of the base 1 more than necessary, the positioning is regulated. The holding projection 7 of the slider 9 projects inward from the ridge 13 so as to engage with the locking piece 2b of the rail 2. The substantially central portion of the slider 9 serves as a spring support portion 18 in the shape of a protrusion, and the holding projection 7 is formed on the tip end side of the spring support portion 18 as described above. The side surface 18 of the spring support portion 18 opposite to the holding projection 7
A protrusion 6 having a substantially semicircular cross section is formed to protrude outward in the vertical direction of the central portion of a, and retaining pieces 11, 11 are integrally provided on both sides of the protrusion 6 so as to protrude outward. When the slider 9 is fitted in the groove 3 and the slide piece 10 hits the positioning step 16 and the positioning is regulated, the protruding surface of the protrusion 6 is located outside the inner wall surface of the recess 5 in the outer direction of the base 1. Is set to. In addition, the upper surface of the protrusion 6 is a ridge 13
It is formed lower than the upper surface of the
So that it can be placed. Further, the upper surface of the projection 6 is formed with an inclined surface that descends to the side opposite to the insertion direction of the slider 9. Sides 18a of the spring support 18 on both sides of the protrusion 6
Similarly, the upper surface of the retaining piece 11 formed at 11 is also formed with an inclined surface. The elastic wire spring 12 has substantially the same length as the width direction of the groove 3, that is, the length between the recesses 5, 5. Here, when the slide piece 10 of the slider 9 is in contact with the positioning step portion 16, the recess 5 of the base 1
5, the protrusion 6 of the slider 9 is located in a substantially linear shape in the width direction of the groove 3.

Next, a case where the slider 9 is attached to the base 1 will be described. First, as shown in FIG. 4 (a), the slider 9 is fitted into the groove 3 of the base 1, and the slide piece 1 is guided by the guide piece 4 and slid from the outside to be fitted. Then, with the slide piece 10 of the slider 9 in contact with the positioning step 16, the wire spring 12 is placed on the upper surface of the protrusion 6 of the slider 9. At this time, both ends of the wire spring 12 are located in the both recesses 5 and 5 and are in a state as shown in FIG. 4 (a), so that the wire spring 12 does not protrude from the upper surface of the spring support portion 18. ing. Next, when a force is applied to the central portion of the wire spring 12 in the arrow direction as shown in FIG. 4B, that is, in the direction opposite to the insertion direction of the slider 9, the wire spring 12 bends,
Sliding on the protrusion 6 and the retaining piece 11, FIG. 4 (c)
As shown in FIG. 3, the retaining piece 11 is engaged with the side surface of the protrusion 6. At this time, the two retaining pieces 11 are located above the wire spring 12 with the projection 6 interposed therebetween, and the retaining pieces 11 and 11 prevent the wire spring 12 from coming off. This wire spring 12 allows slider 9
Will always be urged in the insertion direction. Further, since the force applied to the wire spring 12 of the slider 9 is always constant and can be made sufficiently smaller than the allowable stress, the holding force when the rail is attached is stable.

FIG. 5 is a sectional view showing a state in which the electromagnetic contactor is attached to the rail 2. The slider 9 is pulled outward against the spring force of the wire spring 12, and the other holding projection 14 and the rail 2 are pulled.
When the slider 9 is released, the slider 9 returns by the spring force of the wire spring 12, the holding projection 7 engages with the other locking piece 2b of the rail 2, and the electromagnetic contactor operates. It will be mounted on the rail 2. A fixed iron core 21 is arranged in the base 1 of the electromagnetic contactor, and a movable iron core 22 attracted to the fixed iron core 21 is arranged so as to be vertically movable. A coil 23 is wound around the outer circumference of a coil frame 24 into which a part of the fixed iron core 21 and the movable iron core 22 is fitted. A contact plate 26 is attached to a contact driver 25 that is interlocked with the movable iron core 22, and a movable contact 27 is fixed to the tip of the contact plate 26. Further, fixed contacts 28 facing the movable contacts 27 are arranged, and terminal portions 29 electrically connected to the fixed contacts 28 and connected to the outside are provided on both sides of the surface, respectively.

[Effects of the Invention] As described above, the present invention is provided with a holding portion for pressing and holding both ends of a rail having a substantially U-shaped cross section on both sides of one surface of the electric component main body base, and the holding portion holds the electric component. In an electrical component mounting device in which the main body is mounted on a rail, grooves formed on both sides of one surface of the base and facing one holding portion are provided with grooves open on both sides and the top surface. Guides and guide pieces for positioning are oppositely projected from both inner wall surfaces of the groove, and recesses are cut in both inner wall surfaces of the protrusions located on both sides of the groove, and are slidably fitted in the groove direction. Then, while forming an operating portion for operation on the base end side, and forming a slider having a holding projection for holding the rail at the tip end and a spring support portion raised one step higher than the operating portion side,
Provided on both sides of this slider between the bottom surface of the groove and the guide piece are slide pieces for restricting the positioning of the slider in the insertion direction of the slider. On the side surface of the spring support portion on the base end side, a protrusion whose upper surface is lower than the protrusion and protrudes on the side opposite to the slider insertion direction from the inner wall surface of the recess in the outer side of the base, is formed. When the wire spring placed at the center of the wire spring is pressed against the opposite side of the slider insertion direction so that both ends of the wire spring are located in both upper recesses and the center of the wire spring is located on the side surface of the protrusion. Since the retaining pieces which are located above the wire spring and whose upper surface is lower than the protrusions are formed on the side surfaces of the spring supporting portions on both sides of the protrusion, the slider is fitted in the groove of the base. , While guiding the slide piece with the guide piece, insert it from the lateral direction to the specified position, then place the wire spring on the upper surface of the protrusion of the slider and slide the slider at the center of the wire spring where both ends are located in the recess. When a force is applied in the direction opposite to the insertion direction of, the wire spring bends and slides on the projection and the retaining piece, and is locked to the side surface of the protrusion through the retaining piece. As described above, since the wire spring is placed on the protrusion and the force is only applied in one direction, the assembly is easy and the automation can be achieved. The two retaining pieces are located on the projection, and the retaining pieces can prevent the wire spring from coming off. Further, since the force applied to the wire spring of the slider at the time of assembly is always constant and can be made sufficiently smaller than the allowable stress, the holding force at the time of mounting the rail is stable.

[Brief description of drawings]

FIG. 1 is a bottom view of an electromagnetic contactor with a slider according to an embodiment of the present invention attached, and FIG. 2 is a perspective view of relevant parts of the same, and FIG.
FIGS. 4A and 4B are a plan view and a side view of the slider, FIG. 4A, FIG. 4B, and FIG. 4C are views showing an assembled state of the above embodiment, and FIG. It is sectional drawing which shows the state which attached the container to the rail. Reference numeral 1 is a base, 2 is a rail, 3 is a groove, 4 is a guide piece, 5 is a recess, 6 is a projection, 7 is a holding projection, 8 is an operating portion, 9 is a slider, 10 is a slide piece, and 11 is a retaining piece. , 12 is a wire spring, 13 is a ridge, and 18 is a spring support portion.

Claims (1)

[Claims] 1. A holding portion for holding both ends of a rail having a substantially U-shaped section by pressing is provided on both sides of one surface of a base of the electric component body, and the electric component body is attached to the rail by the holding portion. In an electric component mounting device, grooves formed on both sides of one surface of the base and facing one holding portion are provided with grooves open on both sides and the upper surface, and guides are formed from both inner wall surfaces of the groove inside the base. And positioning guide pieces facing each other, and recesses are formed in both inner wall surfaces of the ridges located on both sides of the groove, and are slidably fitted in the groove direction,
In addition to providing an operating part for operation on the base end side, a slider with a holding protrusion for holding the rail at the tip and a spring support part that is raised one step higher than the operating part side is formed, and a slider is formed on both sides of this slider. Providing slide pieces that are located between the bottom surface and the guide piece and that position and regulate the slider in the slider insertion direction, and when the slider is positionally regulated by the guide piece in the insertion direction, the base end side of the slider spring support part On the side surface of the projection, a projection is provided, the upper surface of which is lower than the protrusion and which projects from the inner wall surface of the base of the recess in the outer direction opposite the insertion direction of the slider. When the wire spring is pressed against the side opposite to the slider insertion direction so that both ends of the wire spring are located in the recesses and the center of the wire spring is located on the side surface of the protrusion, Position is and the upper surface of the retainer piece is made lower than the ridge, rail mounting system of electrical components, characterized by comprising forming the side surface of the spring support portion on both sides of the projections.