JPS61136207A - Transformer - Google Patents

Abstract

PURPOSE:To enable the use of a same case whether or not drop impact strength is required, by constructing a mounting having screw holes so that it can be mounted on and removed from a case. CONSTITUTION:At the center of both sides of the projected portion 6 of a case 4, a rectangular through hole 7 along the main body 5 of the case is provided. Outside this through hole, a notch 8 having a width narrower than the through hole and a height not greater than the projected portion 6 is provided, and a guiding projection 9 and a fixing portion 10 are formed with the through hole 7 and the notch 8. An engaging recess 11 is provided in the bottom end of the case main body 5 in the position at which the through hole 7 is provided. If the transformer does not require drop impact strength, it is used without incorporating the mounting 12, and if drop impact strength is required, the mounting 12 is pushed into the through hole 7 of the projected portion 6 of the case 4, and the engaging projection 15 of an engaging piece 16 is engaged with the engaging recess 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a transformer used in various electronic devices.

Conventional Structures and Their Problems Generally, transformers are widely used as power supplies in portable electronic devices to stationary electronic devices.

Some of these transformers are required to have drop impact strength, while others are not required to have drop impact strength.

As shown in Fig. 1, a transformer that requires drop impact strength has a structure in which screw mounting parts 2 are provided on both sides of the lower end of a case 1 that houses the transformer body.
For transformers that do not require drop impact strength, the case 3 housing the transformer main body is not provided with a mounting part, as shown in FIG.

As described above, in the conventional transformer, it is necessary to prepare two types of cases depending on the application, which is disadvantageous in terms of cost and parts management.

Purpose of the Invention The present invention eliminates the above-mentioned drawbacks of the conventional transformer, and provides a transformer in which the same case is used whether drop impact strength is required or not, and the mounting portion is detachable. The purpose is to

Structure of the Invention In order to achieve the above object, the transformer of the present invention is provided with a protruding part for accommodating the transformer main body and for accommodating the terminals and parts of the transformer main body at the lower part of the companion case main body. A rectangular through hole is provided in the center along the case body, a notch narrower than the through hole is provided on the outside of the through hole, and an engaging recess is provided at the lower end of the case body at the location where this through hole is provided. The mounting body is provided with a case, a groove that fits into the through hole and the notch, a coupling part having an elastic retaining piece that engages with the engagement recess, and a screw hole. By making the mounting body removably attachable to the case, the installation of the mounting body can be selected depending on the application, and the case can be standardized.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS. 3 to 6 of the drawings.

Reference numeral 4 denotes a case made of synthetic resin that houses the transformer main body, that is, the transformer main body, which is constructed by incorporating an iron core into a coil bobbin wound with a coil. A protruding portion 6 for housing the plate portion is integrally formed. A rectangular through hole 7 along the case body 6 is provided in the center of both sides of the protrusion 6, and the width of the through hole 7 is narrower than that of the through hole 7 on the outside of the through hole γ. A notch 8 having a height dimension or less is provided, and the through hole 7 and the notch 8 form a guide protrusion 9 and a fixing portion 1Q. Furthermore, an engagement recess 11 is provided at the lower end of the case body 5 at the location where the through hole 7 is provided.

There is a mounting body 12 that is incorporated into such a case 4 as necessary. This mounting body 12 is also molded from synthetic resin and has a groove 13 that fits into the guide protrusion 9 of the case 4. A retaining piece 1 having notches 14 on both sides of the surface and an engaging protrusion 16 at the lower end.
6, this portion constitutes a joint portion 17, and a screw hole 18 is provided continuous with this joint portion 17.

In the case of a transformer with such a configuration that does not require drop impact strength, it is used without incorporating the mounting body 12, and when drop impact strength is required, the mounting body 12 is used as shown in FIG.
A groove 1 is formed in the through hole 7 and notch 8 of the protrusion 6 of the case 4.
3 to the guide protrusion 9 and push it in, and the engagement protrusion 16 of the engagement piece 16 is engaged with the engagement recess 11 as shown in FIG. 6, thereby coupling the mounting body 12 to the case 4. can.

Since the transformer of the present invention is configured as described above, the same case can be used whether or not drop impact strength is required, and when strength is required, a mounting body can be incorporated. This makes it possible to maintain sufficient mounting strength of the mounting body, which is advantageous in terms of cost, and also facilitates parts management, which is of great practical value.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional transformer, Fig. 2 is a perspective view of another conventional transformer, Fig. 3 is a perspective view of an embodiment of the transformer of the present invention, and Fig. 4 is a perspective view of a conventional transformer. A perspective view of the main part, and FIGS. 5 and 6 are sectional views of the main part showing the assembled state of the mounting body. 4... Case, 5... Case body, 6
...Protrusion, 7...Through hole, 8...
... Notch, 9... Guide protrusion, 10...
... Fixed part, 12 ... Mounting body, 13 ...
...Groove, 14...Notch, 16...Engagement protrusion, 16...Engagement piece, 17...Connection part, 18... ...screw hole. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 2 Figure 3

Claims (1)

[Claims] A protruding part for storing the terminal plate part of the transformer body is provided at the bottom of the case body that houses the transformer body, and a rectangular through hole is provided along the case body in the center of both sides of this protruding part. A case is provided with a notch narrower in width than the through hole on the outside of the hole, an engaging recess is provided at the lower end of the case body at the position where the through hole is provided, and a groove is formed that fits into the through hole and the notch. A transformer having a coupling part having an elastic engagement piece that engages with an engagement recess, and a mounting body having a screw hole that can be attached to and detached from the case.