JPH0686310U - Transformer - Google Patents

Abstract

(57) [Summary] [Object] To obtain a structure for facilitating insertion and locking of a holder for holding an EE type magnetic core in the EE type magnetic core and improving reliability. [Structure] Notched concave and convex portions 5 are provided at both end portions of the EE type magnetic core 4, and claw shaped portions 6 are provided at side surfaces of both ends of the U-shape of the holder 1, and the concave and convex portions 5 are provided. The claw-shaped portion 6 is locked. [Effect] The work of locking the holder to the EE type magnetic core is facilitated, and adhesion is not required, and reliability is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a transformer using an EE type magnetic core, and more particularly to an EE type magnetic core and a holder for holding the EE type magnetic core in pressure contact.

[0002]

[Prior art]

 In the conventional transformer of this type, as shown in FIGS. 4 to 6, the holder 9 has a shape of a lower bud, and when the holder 9 is inserted and locked in the EE type magnetic core 8, the pressure contact of the EE type magnetic core 8 is performed. In order to secure the pressing force in the direction, the insertion opening of the holder into the EE type magnetic core is smaller than the external dimensions of the EE type magnetic core, making it difficult to insert the holder into the EE type magnetic core. In addition, after insertion and locking, it was necessary to adhere and fix the EE type magnetic core to prevent the holder from coming off.

[0003]

[Problems to be solved by the device]

 In the conventional transformers shown in FIGS. 4, 5 and 6, the holder 9 is in the shape of a lower bud, that is, the opening 2 of the holder is narrower than the outer dimensions of the EE type magnetic core 8. Therefore, when assembling the transformer, it is necessary to expand the opening 2 of the holder 9 with fingers and a jig and insert and lock it in the EE type magnetic core 8, which requires a lot of time for the transformer assembling work. Was there. Further, since the EE type magnetic core 8 and the holder 9 do not have any engaging portion, there is a case where they are displaced, and it is necessary to bond the end portion of the holder 9 and the EE type magnetic core 8. In order to solve the above problems, the present invention forms notch-shaped concave and convex portions at both end portions in the rear direction shown in FIG. 2 on the side surface of the outer foot of the EE type magnetic core, and the holder is formed on the side surfaces at both ends of the U-shape. A claw-shaped portion is provided. It is an object of the present invention to provide a transformer in which the EE type magnetic core can be easily fixed by this means and the bonding step can be eliminated.

[0004]

[Means for Solving the Problems]

 The present invention is a transformer in which an EE-type magnetic core is assembled symmetrically from the lateral direction on a bobbin with terminals, and a U-shaped holder is incorporated so as to cover the entire coil from the upper part thereof. Is a notch-shaped uneven portion formed on both sides of the outer foot side in the back direction of the EE-type magnetic core. The convex portion of the uneven portion has a taper portion on the upper side, and the concave portion is engaged with the tab portion of the holder. It has a similar shape to the claw-shaped part so that it can be stopped. Further, the holder for holding the EE-type magnetic core has a U-shape, and the claw-shaped portions are formed on the side surfaces of the both ends of the holder, and the claw-shaped portions are the projections of the notched concave and convex portions of the EE-type magnetic core. The transformer is characterized in that the opening of the holder is widened by the part and is locked in the recess.

[0005]

[Action]

 According to the present invention, claw-shaped portions are provided on both side surfaces of the U-shaped tip of the holder, and the EE type magnetic core is provided with cut-out concave and convex portions at both lateral end portions on the outer foot side surface. When inserting the holder into the EE-type magnetic core, the tip of the opening of the holder can be easily inserted due to the taper of the convex part of the notch-shaped uneven part formed on the outer side surface of the EE-type magnetic core in the rear direction. After the insertion, the recesses of the notch-shaped uneven parts ensure that the tabs at the tip of the holder are locked. Also, the bonding step after insertion can be eliminated.

[0006]

【Example】

 An embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing a transformer according to the present invention. FIG. 2 shows an EE type magnetic core of its basic component and FIG. 3 shows a holder. As shown in FIGS. 1, 2, and 3, a U-shaped holder 1 has tab portions 6 provided on the side surfaces at both ends of the U-shape, and the holder is made of the same metal plate such as a stainless plate. It can be manufactured by the press method. Then, when inserting the EE type magnetic core 4 into the wound bobbin with the terminal and inserting the holder 1 from the direction of the upper surface of the EE type magnetic core 4 toward the direction of the lower surface of the EE type magnetic core 4, The opening 2 of the holder 1 is expanded by the tapered portion 5a of the convex portion of the notch-shaped concavo-convex portion 5 of the EE type magnetic core 4, and the holder 1 is sandwiched by the EE type magnetic core 4 and further The claw portion 6 of the holder 1 is locked by the recess 5b of the holder 4. The EE type magnetic core 4 is securely locked.

[0007]

[Effect of device]

 As described above, according to the present invention, it is possible to easily insert and lock the holder into the EE type magnetic core, and it is possible to improve workability and manufacturability by eliminating the need for adhesive fixing after locking. It became possible to provide a transformer.

[Brief description of drawings]

FIG. 1 is an external perspective view showing a transformer after assembly according to the present invention.

2 is a perspective view of an EE type magnetic core which is a component of the transformer shown in FIG. 1 according to the present invention.

FIG. 3 is a perspective view of a holder which is a component of the transformer shown in FIG. 1 according to the present invention.

FIG. 4 is an external perspective view showing a conventional transformer.

5 is a perspective view of an EE type magnetic core which is a component of the conventional transformer shown in FIG.

6 is a perspective view of a holder which is a component of the conventional transformer shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 holder 2 opening 3 bobbin with terminal 4 EE type magnetic core of the present invention 5 concave and convex portion 5a (cut) taper portion 5b concave portion 6 claw portion 7 coil 8 conventional magnetic core 9 conventional holder

Claims (1)

[Scope of utility model registration request] 1. A transformer in which an EE-type magnetic core is assembled symmetrically from a lateral direction on a bobbin with terminals, and a U-shaped holder is incorporated so as to cover the entire coil from above.
The EE type magnetic core has notched concave and convex portions formed on both lateral end portions of the EE magnetic core on the outer side surface of the outer foot. A similar shape to the claw-shaped portion is formed so that the claw-shaped portion can be locked. Further, the holder for holding the EE type magnetic core has a U-shape, and the claw-shaped portions are formed on the side surfaces of both ends of the holder,
The transformer, wherein the claw-shaped portion is configured such that the opening portion of the holder is expanded by the convex portion of the notch-shaped concave-convex portion of the EE type magnetic core and is locked in the concave portion.