JPS6314408Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a fixing device for a transformer, such as a structure for fixing a transformer in a housing of an audio device, a television receiver, a video recorder, etc. Regarding.

(Prior art) Conventionally, when fixing a transformer in audio equipment, etc., a mounting frame provided on the transformer is fixed to the chassis by tightening screws, or a fixing part is formed on the exterior frame of the transformer, and this A structure in which the fixed part of the exterior frame is fixed to the chassis with screws, or a structure in which one side of the fixed part of the exterior frame is fixed to the locking part of the casing and the other side is tightened and fixed with screws. In many cases, a structure is adopted in which a nut is used to tighten the core of the transformer and is fixed to the chassis with a nut. As described above, most conventional transformers have a structure in which they are directly attached to the chassis using screws, so it is difficult to install and position and fix a heavy transformer to the chassis, and it takes a lot of time to assemble it.

Conventionally, as shown in Japanese Utility Model Application Publication No. 56-63024, a pair of L-shaped holding frame pieces on both sides and a holding plate having a spring plate section in the middle are attached to the frame with several screws. , a mounting plate provided on the transformer is engaged with the above-mentioned pair of holding frame pieces, and this mounting plate is biased by a spring plate portion to press the mounting plate against the pair of holding frame pieces to fix the transformer. It has been known.

(Problems to be Solved by the Invention) According to the above structure, a retaining plate integrally having a pair of retaining frame pieces and a spring plate part is formed separately from the frame, and this must be attached with several screws. However, since the spring plate part of the holding plate is always in contact with the transformer mounting plate, the heat of the transformer is easily transferred to the frame side, and the frame is made of synthetic resin. Thermal deformation becomes a problem when used as a casing.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transformer fixing device that allows a transformer to be easily and reliably attached to a housing and reduces heat conduction to the housing.

[Structure of the idea]

(Means for Solving the Problems) The transformer fixing device of the present invention is arranged on the inner wall surface 2 of a casing 1 made of synthetic resin, with its tips bent in directions facing each other and the inner surfaces spaced apart from the inner wall surface 2. A pair of holding frame pieces 3 and 4 having opposing engagement edges 5, and a gap located between the pair of holding frame pieces 3 and 4 between the inner surface of the engagement edge 5 and the tip surface 7. The guide protrusions 6 each having a shape of l are integrally formed to protrude, and the transformer 10 is provided with a gap l between the inner surface of the engaging edge 5 of the pair of holding frame pieces 3 and 4 and the tip surface 7 of the guide protrusion 6.
The pair of holding frame pieces 3 and 4 are fitted with a mounting plate 11 which is inserted into the holding frame pieces 3 and 4 and has both side edges formed in a width to engage with the engaging edge 5 and has a receiving piece part 12 formed on at least one end edge.
The receiving piece 12 of the mounting plate 11 of the transformer 10 is inserted into the gap l between the engaging edge 5 of the transformer 10 and the guide protrusion 6, and both sides of the transformer 10 are engaged and held by the engaging edge 5 of the housing 1. It is fixed with screws to a cover plate 15 fixed to the opening.

(Function) In the present invention, the transformer 10 is provided in the gap l between the inner surface of the engagement edge 5 of the pair of holding frame pieces 3 and 4 on the inner wall surface 2 of the housing 1 and the tip surface 7 of the guide protrusion 6. Insert the mounting plate 11, and fix the receiving piece 12 of the mounting plate 11 to the cover plate 15 of the housing 1 with screws 20,
The transformer 10 is fixed to the housing 1.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a housing that is integrally molded from synthetic resin and has an opening on the bottom surface, and a pair of holding frame pieces 3 and 4 are formed on the inner wall surface 2 of this housing 1 at a distance from each other and integrally protrude vertically in the vertical direction. has been done. The tips of the pair of holding frame pieces 3 and 4 are approximately L in the direction opposite to each other.
An engaging edge 5 is formed which is bent into a letter shape, and the inner surface of the engaging edge 5 faces the inner wall surface 2 and is spaced parallel to it.

Furthermore, rib-shaped guide protrusions 6, 6 integrally protrude from the inner wall surface 2 of the housing 1, located between the pair of holding frame pieces 3, 4 and parallel to the holding frame pieces 3, 4. It is formed. A gap 1 is formed between the leading end surface 7 of the guide protrusions 6, 6 and the inner surface of the engaging edge 5 of the holding frame pieces 3, 4. Furthermore, a protrusion 9 in which a screw hole 8 is formed is integrally protruded from the opening edge of the bottom surface of the casing 1 .

10 is a transformer, and a mounting plate 11 is fixed to one side of the transformer 10. This mounting plate 11
has a width such that both side edges are engaged with the engaging edges 5 of the pair of holding frame pieces 3 and 4, and the inner surface of the engaging edge 5 of the pair of holding frame pieces 3 and 4 and the guide protrusion 6 tip face 7
It is designed to be inserted from the bottom side of the housing 1 into the gap l between the housing 1 and the housing 1. Further, on the upper and lower edges of this mounting plate 11, receiving pieces 12 and 13 are bent at right angles to the mounting surface side of the transformer 10 and are shorter than the gap between the engaging edges 5.
A pair of screw holes 14 are formed in the receiving pieces 12 and 13.

Reference numeral 15 denotes a cover plate made of a metal plate serving as a bottom plate, which is fitted into the bottom opening of the casing 1 and engaged with the protrusion 9 . This cover plate 15 has screw holes 8 of the protrusion 9 and receiving pieces 12 and 13 of the mounting plate 11.
Screw insertion holes 1 each facing the screw holes 14 of
6 and 17 are formed.

Then, the housing 1 is turned upside down, and from the bottom opening, the both side edges of the mounting plate 11 fixed to the transformer 10 are connected to the engaging edges 5 of the pair of holding frame pieces 3, 4 and the guide protrusions 6, 6. When inserted into the gap l between
8 , and both side edges of the mounting plate 11 are engaged and held by the engagement edge 5 . In this state, transformer 10
is held without being moved to any side other than the opening side of the housing 1. After performing the electrical connection process, the cover plate 15 is fitted into the opening of the housing 1, and the screws 19 inserted through the screw insertion holes 16 are tightened and screwed into the screw holes 8 of the protrusion 9. While fixing the cover plate 15 to the housing 1, a screw 20 is inserted through the screw insertion hole 17.
is screwed into the screw hole 14 of the receiving piece 12 of the mounting plate 11, and the transformer 1 is attached to the cover plate 15 via the mounting plate 11.
Fix 0.

In the embodiment described above, the holding frame pieces 3, 4 and the guide protrusions 6, 6 are formed vertically along the entire length in the vertical direction along the inner wall surface 2 of the housing 1, but they are formed intermittently in some parts. Moreover, the guide protrusion 6 does not need to be formed in two parallel rows, and may be one.

Also, the receiving piece 12 of the mounting plate 11 of the transformer 10 is
The present invention is not limited to a structure in which the transformer is fixed with two screws 20, but in the case of a relatively lightweight transformer, the transformer 10 can be sufficiently fixed with one screw 20.

Moreover, the mounting plate 11 fixed to the transformer 10 is
Although the receiving pieces 12 and 13 are formed on both the upper and lower ends, they may be formed on only one of them.Also, by changing the shape of the upper and lower receiving pieces 12 and 13, one receiving piece can be formed between the engaging edges 5. It is also possible to give directionality as a size that cannot be passed through.

[Effect of idea]

According to the present invention, the pair of holding frame pieces 3 and 4 that hold the transformer 10 and the pair of holding frame pieces 3,
Since the guide protrusion 6 between the transformers 10 and 4 is integrally formed to protrude from the inner wall surface 2 of the casing 1, there is no need to install separate fittings on the casing 1 side, and the transformer 10
Insert the mounting plate 11 of the transformer 10 into the gap l between the holding frame pieces 3 and 4 and the guide protrusion 6.
By attaching the receiving piece 12 in 1 to the cover plate 15 fixed to the opening of the housing 1 with screws 20,
The transformer 10 can be easily and reliably fixed to the housing 1. In addition, the mounting plate 11 of the transformer 10
is supported by the pair of holding frame pieces 3 and 4 and the guide protrusion 6, and a gap is formed between the inner wall surface 2 of the housing 1 and the mounting plate 11, and the mounting plate 11 is supported by the guide protrusion 6. Since the transformer 10 is only in linear contact with the casing 1, the heat of the transformer 10 is not easily conducted to the casing 1, and thermal deformation of the casing 1 formed of synthetic resin can be prevented.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a transformer fixing device showing one embodiment of the present invention, Fig. 2 is a plan view of the same, and Fig. 3
The figure is a longitudinal sectional view of the same as above. DESCRIPTION OF SYMBOLS 1... Housing, 2... Inner wall surface, 3, 4... Holding frame piece, 5... Engaging edge, 6... Guide protrusion, 7... Tip surface, l... Gap, 10... Transformer , 11...Mounting plate, 12...Socket part, 15...Cover plate, 20...
screw.

Claims (1)

[Claims for Utility Model Registration] A pair of holding frame pieces having engaging edges on the inner wall surface of a casing made of synthetic resin, the distal ends of which are bent in opposite directions and whose inner surfaces are spaced apart and opposite to the inner wall surface; and a guide projection located between the pair of holding frame pieces and forming a gap between the inner surface of the engaging edge and the tip end surface is integrally formed, and the transformer is provided with a guide protrusion that is located between the pair of holding frame pieces and forms a gap between the inner surface of the engaging edge and the tip end surface. A mounting plate is inserted into the gap between the inner surface of the engaging edge and the distal end surface of the guide protrusion, and has both side edges formed to a width that engages with the engaging edge, and has a receiving piece formed on at least one end edge. and the receiving piece of the mounting plate of the transformer, which is inserted into the gap between the engaging edge and the guide protrusion of the pair of holding frame pieces and whose both side edges are engaged and held by the engaging edge, is attached to the housing. It was fixed with screws to the cover plate fixed to the opening. A transformer fixing device characterized by: