JPH0650967Y2 - Fixed base for toroidal coil - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixed base for a toroidal coil that is mounted on a plate surface such as a printed wiring board with the radial direction of the toroidal coil being perpendicular to the printed wiring board.

When placing a toroidal coil with a winding on a toroidal core vertically on the wiring board (the radial direction of the core is perpendicular to the board), the toroidal coil is placed on the outer peripheral surface of the double cylindrical insulating case with an annular core storage space. An insulating case with a holding plate in which a holding plate is integrally formed via a connecting portion having a shape is used.

In the above-mentioned insulating case with a holding plate, the holding plate has a long-side dimension that is almost the same as the outer diameter of the insulating case and a short-side dimension that is slightly larger than the axial dimension of the insulating case. It is a rectangle provided with a through hole through which an end is inserted. Since the size of the holding plate is large, it cannot be wound by a winding machine, and there is a problem that it is necessary to wind manually.

The fixed base for the toroidal coil of the present invention comprises a pair of holding plates having elastic plate pieces that abut on both surfaces of the toroidal coil.
It is characterized by being erected on the upper surface of the base.

The present invention has a structure in which elastic plate pieces of a pair of holding plates elastically contact both surfaces of the toroidal coil to hold the coil vertically on the base.

FIG. 1 shows the appearance of an embodiment of the present invention.

The base is made of highly elastic synthetic resin material. A shallow arc-shaped recess 2 for coil positioning is formed on the upper surface of a rectangular base plate 1 slightly larger than the outer diameter and axial dimension of the toroidal coil. On the base plate 1, a pair of holding plates 3 which are higher than the outer radius of the coil and lower than the outer diameter are vertically provided along the short side edges. Elastic plate pieces 4 extending toward the inside of the base plate 1 are provided on the upper side edges of the holding plate 3, and elastic small tongue pieces 5 are provided at the center of the upper edge of the holding plate 3 so as to hang inward. (One is not shown.) Semi-cylindrical lead end fixing projections 6 (one is not shown) are provided in the central portions of both side surfaces on the long side of the base plate 1, and the through holes 7 are formed in the projections 6. And a vertical groove 8 communicating with this hole is formed.

Since the base has such a structure, by spreading the elastic plate piece 4 and pushing the toroidal coil vertically and pushing the lead wire downward until the coil enters the recessed portion 2, as shown in FIG. The toroidal coil 9 (winding and lead end not shown) can be held vertically on the base. The elastic plate piece 4 elastically contacts both sides of the coil 9 to hold the coil 9,
The elastic small tongue piece 5 warps to prevent the coil 9 from slipping upward. The lead end of the winding (not shown) is passed through the vertical groove 8 and inserted into the through hole 7, and is pulled out and fixed downward.

FIG. 3 shows another embodiment. In this base, a pair of holding plates 3 each having an elastic plate piece 4 are mounted on a base plate 1 having a recess 2.
A square window portion 10 is formed in the holding plate 3 so that the outer peripheral portion of the coil can enter therein, which is provided closer to the center than the case of FIG.

In the case of the base shown in FIG. 3, the elastic plate piece 4 is expanded, and at the same time, the holding plate 3 is expanded to push the toroidal coil vertically.
The holding plate 3 returns to its original shape and cooperates with the elastic plate piece 4 to hold the coil vertically. In the case of this base, the coil may be held after the base is attached to the wiring board using a double-sided adhesive tape or the like.

According to the base of the present invention, the toroidal coil created by using the winding machine can be vertically mounted and easily and surely mounted on the wiring board.

[Brief description of drawings]

 FIG. 1 is an external view showing an embodiment of the present invention. FIG. 2 is a perspective view showing a usage state. FIG. 3 is an external view showing another embodiment of the present invention. 1 ... Base plate. 2 ... Recess for coil positioning. 3 ... Clamping board. 4 ... Elastic plate piece. 5: Elastic small tongue piece. 6 ... Projection for fixing the lead end. 7 ... Through hole. 8 ... Vertical groove. 9 ... Toroidal coil. 10 …… Square window.

Claims (1)

[Scope of utility model registration request] 1. A fixed base for a toroidal coil in which a coil positioning recess is provided on the upper surface of a base plate for vertically mounting a toroidal coil on a wiring board. An elastic member that abuts both side surfaces of the toroidal coil on the upper surface of the base. A fixed base for a toroidal coil, which has a plate piece and an elastic small tongue piece for locking the toroidal coil on the upper part, or a pair of sandwiching plates having an elasticity that is erected higher than the length of the coil radius having a square window portion.