JP2546909Y2 - Spring contact mounting structure of electromagnetic contactor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable contact mounting portion of an electromagnetic contactor, and more particularly to a mounting structure of a spring receiver for inserting the movable contact portion.

[0002]

2. Description of the Related Art As shown in FIG. 1, a conventional mounting structure of a spring receiver inserted into a through-hole of a movable contact mounting portion has a rectangular through-hole 8 on an upper surface, and a side surface and an upper portion on a side surface. Groove 2a
A movable contact mounting portion 8a having a closed bottom is formed at both ends at the center, a top surface is closed, and a rectangular through hole 2b is formed at an upper side surface. Movable contact mounting having a rectangular through hole 2c forming a groove 2d on the side surface, a rectangular through hole 8d from the upper bottom surface to the lower upper surface, and a rectangular through hole 9c on the lower bottom surface. As shown in FIG. 3, the movable base 1 having the central portion of the movable base 1 having the portion 8c has a through hole 8 and an upper surface smaller than the through hole 8d as shown in FIG. The movable contact spring 5 is inserted into the through hole 7 of the box-shaped spring receiver 3 having the through hole 7 and the protrusion 7a on the bottom surface, and the movable contact spring 5 is fixed to the protrusion 7a. The movable contact spring 5 is fixed in the through hole 7 from above the through hole 8a. In order to fix the spring receiver 3 in the through hole 2, the stopper 4 having projections 4 a in four directions perpendicular to each other and having a projection 4 b on the bottom surface is formed by inserting the projection 4 a into the groove 2 a of the through hole 2. The movable contact spring 5 was fixed in the through-hole 2 by engaging the end of the movable contact spring 5 with the convex portion 4b of the stopper-4. Next, the upper end of the through hole 7 of the spring receiver 3 composed of the projection 7a of the spring receiver 3 and the movable contact spring 5 fixed by the projection 4b of the stopper 4 is pulled up above the through hole 8, and the spring receiver is pulled up. The movable contact portion 6 having the concave portion 6a on both sides inside the central portion is inserted into the upper end of the through hole 7 of the third contact portion 3 and is brought into contact with the support plate portion 6b of the movable contact portion 6 at the end 8b of the movable contact mounting portion 8a. The movable contact part 6 and the movable contact mounting part 8a were fixed by.

The movable contact spring 5 is inserted into the through hole 7 of the spring receiver 3 with respect to the central projection 8c, and the movable contact spring 5 is fixed to the projection 7a. In order to fix the spring receiver 3 composed of the movable contact spring 5 fixed in the through hole 7 from the lower side of the bottom surface of the through hole 7c, the protrusion 4a of the stopper 4 is connected to the through hole 2c.
The movable contact spring 5 was fixed in the through hole 2c by being fitted into the groove 2d of the movable contact spring 5 at the end of the movable contact spring 5 and the projection 4b of the stopper-4. Since there is a through hole 9c, the projecting portion 4a of the stopper 4 is prevented from dropping using a jig or the like, so that the projecting portion 7a of the
The upper end of the through hole 7 of the spring receiver 3 composed of the movable contact spring 5 fixed by the convex portion 4b is pulled up above the through hole 8d, and the upper end of the through hole 7 of the spring receiver 3 is recessed on both sides inside the central portion. The movable contact portion 6 and the movable contact mounting portion 8c are fixed by inserting the movable contact portion 6 having the movable contact portion 6a and making contact with the support plate portion 6b of the movable contact portion 6 at the end 8e of the movable contact mounting portion 8c. did. In the above structure, it takes time and effort to insert the stopper into the through hole on the side surface of the movable contact mounting portion, and there is a problem in cost.

[0004]

SUMMARY OF THE INVENTION As described above, the through hole 7
In order to fix the spring receiver 3 composed of the movable contact spring 5 fixed to the through hole 2 and the through hole 2c, a projection 4a is provided at right angles to each other as shown in FIG. Is inserted into the groove 2a of the through-hole 2 and the groove 2d of the through-hole 2c, and the end of the movable contact spring 5 is engaged with the projection 4b of the stopper-4. The movable contact spring 5 is connected to the through hole 2 and the through hole 2c.
The method of fixing to the above is very troublesome, and there is a problem in terms of cost, such as the necessity of a part called a stopper-4.

[0005]

SUMMARY OF THE INVENTION A movable contact mounting portion having a through hole formed in a side portion, a substantially H-shaped through hole formed in an upper portion, and an upper inner end projection is provided with a substantially H-shaped upper and lower portion. And a spring receiving part which forms a through hole in the same direction as the movable contact mounting part on both sides is inserted into the through hole of the substantially H-shaped part of the movable contact mounting part, and the upper inner end of the spring receiving part is projected. By locking a spring for a movable contact having a winding diameter portion larger than the width of a substantially H-shaped central portion of the upper portion of the spring receiving portion at the portion, a stopper which is a component for preventing the spring receiving portion from being removed in the related art is omitted.

[0006]

According to the present invention, the stopper -4, which is a retaining part for fixing the spring receiver 3 to the through-hole 2 and the through-hole 2c, can be omitted. It is.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a mounting structure of a spring receiver for inserting a movable contact portion into a movable contact mounting portion of the present invention has a rectangular through hole 12 on a side surface and a substantially H-shaped through hole on an upper surface. A semicircular protrusion 14 having a hole 15 and engaging a movable contact spring 5a having a winding diameter larger than the width of the central detail of the substantially H-shaped through hole 15 at both ends on the upper surface is formed at the bottom surface at the upper inner end. The upper surface portion 14a is formed at both ends of the substantially H-shaped through hole 15, and the rectangular through hole 12 is formed.
A movable contact mounting portion 11a having a closed bottom surface is formed at both ends of the center, a top surface is closed, a rectangular through hole 12a is formed on an upper side surface, and a rectangular through hole is formed on a lower side surface. 12b, and has a substantially H-shaped through hole 15a from the upper bottom surface to the lower upper surface, and locks the movable contact spring 5a whose winding diameter is larger than the width of the center detail of the substantially H-shaped through hole 15a. The rectangular through-hole 1 has an upper surface portion 14b that forms a semicircular protrusion 16 on the bottom surface at the inner end at both ends of a substantially H-shaped through-hole 15a.
A movable base 11 having a movable contact mounting portion 11b having a rectangular through hole 12c in the bottom surface at the center and having a movable contact mounting portion 11a at both ends of the center. As shown in FIG.
Has a locking piece 13a for fixing the through hole 12 and the through hole 1
2 and an upper and lower surface having a through hole 13b smaller than the lateral width of the through hole 12b is inserted into the H-shaped spring receiver 13 from above the through hole 15, and then the spring receiver 13 is inserted into the spring receiver 13. The movable contact spring 5a is inserted from above, and the upper end circular portion of the movable contact spring 5a is engaged with the protrusions 14 on the bottom surface of the upper surface portion 14a at both ends of the through hole 15, and then the upper end of the spring receiver 13 is connected. The upper part of the through hole 13b of the spring receiver 13 is pulled up above the through hole 15, and the concave part 6a
The movable contact portion 6 and the protrusion 11a are fixed by inserting the movable contact portion 6 having the shape (1) and contacting the support plate portion 6b of the movable contact portion 6 at the end 11c of the protrusion 11a.

The spring receiver 13 is inserted into the central movable contact mounting portion 11b from the bottom of the through hole 12c, and then the jig is used to prevent the spring 13 from dropping. The movable contact spring 5a is inserted from the hole 12b, and is engaged with the protrusion 16 on the bottom surface of the upper surface portion 14b by the upper end circular portion of the movable contact spring 5a. Then, the upper end of the spring receiver 13 is located above the through hole 15a. The movable contact portion 6 having the concave portion 6a on both sides inside the central portion is inserted into the upper end of the through hole 13b of the spring receiver 13 to fix the support plate portion 6b of the movable contact portion 6 and the movable contact mounting portion 11b. I do.

[0009]

According to the present invention, a movable contact mounting portion having a through hole formed in a side portion, a substantially H-shaped through hole formed in an upper portion, and an upper inner end projection has a substantially H-shaped upper and lower portion and both side portions. A spring receiving part forming a through hole in the same direction as the movable contact mounting part is inserted into the substantially H-shaped through hole of the movable contact mounting part, and the width of the upper part of the spring receiving part is substantially H-shaped. By adopting a structure in which the spring for the movable contact having a larger diameter portion is locked, the spring for the movable contact can be easily inserted into the spring receiver, so that work efficiency is improved and cost reduction can be expected.

[Brief description of the drawings]

 The following is a description.

FIG. 1 is an exploded perspective view showing a conventional mounting structure of a spring receiver for inserting a movable contact portion spring inserted into a movable contact mounting portion.

FIG. 2 is an exploded perspective view showing a mounting structure of a spring receiver for inserting a movable contact portion spring inserted into the movable contact mounting portion of the present invention.

FIG. 3 is a perspective view of a conventional spring receiver.

FIG. 4 is a perspective view of a conventional stopper.

FIG. 5 is a perspective view of a spring receiver of the present invention.

[Explanation of symbols]

 Reference Signs List 1 movable base 2 through-hole 2a groove 2b through-hole 2c through-hole 2d groove 3 spring receiver 4 stopper 4a projection 4b projection 5 movable contact spring 5a movable contact spring 6 movable contact 6a concave 6b support plate 7 Through hole 7a Projection 8 Through hole 8a Movable contact mounting portion 8b End 8c Movable contact mounting portion 8d Through hole 8e End 9c Through hole 11 Movable base 11a Movable contact mounting portion 11b Movable contact mounting portion 11c End 12 through hole 12a through hole 12b through hole 12c through hole 13 spring support 13a locking piece 13b through hole 14 protrusion 14a upper surface portion 14b upper surface portion 15 through hole 15a through hole 16 protrusion

Claims (1)

(57) [Scope of request for utility model registration] A movable contact mounting portion formed at an upper portion of the movable base; the movable contact mounting portion has a through hole formed at a side portion and a substantially H-shaped through hole formed at an upper portion; A spring receiving portion inserted into a substantially H-shaped through hole formed at an upper portion, and the spring receiving portion has a substantially H-shaped upper and lower portion and both side portions in the same direction as the through hole of the movable contact mounting portion. The movable contact spring mounted in the through-hole of the spring receiving portion, and the winding diameter of the movable contact spring is larger than the width of the upper substantially H-shaped central detail of the spring receiving portion, A spring receiving mounting structure for an electromagnetic contactor, wherein an upper end portion is locked to an upper inner end projection of a movable contact mounting portion, and a movable contact portion is mounted between an upper surface of the movable contact mounting portion and an upper inner surface of a spring receiving portion.