JPS60261113A - Fixture for transformer, choke coil, etc. - Google Patents

Abstract

PURPOSE:To miniaturize and lighten a fixture by caulking and forming quadrilateral pawls extended so as to be projected at two positions of the upper ends of U-shaped vertical walls in a plate made to a metal so as to be bent to the inside of windows for an E-shaped core. CONSTITUTION:An E-shaped core 4b is inserted into a groove formed by vertical walls 13a and 13b at the central section of a fixture 11, pawls 14a-14d are caulked and mounted so as to be bent to the insides of windows for the E- shaped core 4b, a coil 8, on windows thereof insulating paper 9 is wound, is inserted to the E-shaped core 4b, and an I-shaped core 4a is fixed at the upper ends of the E-shaped core 4b through welding or by using adhesives, thus constituting a theta-shaped core.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for installing power transformers, chokes, etc. used in consumer electronic equipment, etc. More specifically,
Small power supply lance used for TVs, VTRs, etc.
The installation of chokes, etc. is related to the device.

(Configuration of conventional example and its problems) Regarding the installation of transformers, chokes, etc. in conventional example,
A description will be given with reference to FIGS. 1 to 3, taking a small power transformer as an example.

In Fig. 1, the device 1 is installed from the upper end side of the "Japanese"-shaped core consisting of the legs 3a and 3b, the ■-shaped core 4a and the E-shaped core 4b, and the legs 3a and 3b, which have through holes 2a and 2b for mounting screws. Inverted U-shaped frames 5a, 5b and 5C to be inserted
, vertical walls 6a to 6f (6b and 6d are not shown in FIG. 1) formed in a U shape from both sides of each of the frames 5a to 5c, and both left and right ends of the "Japanese"-shaped iron cores 4a and 4b. It consists of vertical walls 6a and 6b of both I11 of frames 5a and 5C that fit into the frame bodies 5a and 5C, and claws 7& to 7d (7b is not shown in Fig. 1) provided by extending the lower ends of each of 6e and 6f. has been done.

In Figure 2, the main body of the power transformer consists of an E-shaped core 4
After inserting the coil 8 into the coil 8 through the insulating paper 9, the square-shaped core 4af is fixed to the upper end of the E-shaped core 4b to form a "Japanese"-shaped core.

FIG. 3 shows the external appearance of a small power transformer in which the conventional installation device 1 is installed, and the installation is performed from the upper end side of the power transformer body shown in FIG. A vertical wall 6a protruding from the lower end of the transformer body by extrapolating the inverted U-shaped frame composed of 5b, 6e, and 6f.
The device 1 is attached to the main body of the power transformer by bending the claws 7a to 7d at the lower ends of 6b, 6e, and 6f inward and tightening them.

In order to install such a power transformer, since the device 1 is composed of an inverted U-shaped frame, the surface area is large and the shape is complicated, and a large amount of material and a complicated molding process are required, resulting in high manufacturing costs. , an inverted U-shaped frame 5 during the assembly and crimping process.
Since a and 5C are easy to open, the center-to-center distance between the mounting screw through holes 2a and 2b increases, and there is a problem in that the defect rate due to pitch deviation that deviates from the allowable value for the center-to-center distance increases.

(Objective of the Invention) The present invention solves the above-mentioned drawbacks. It has a simple structure, requires less material, and can easily attach transformers, chokes, etc. to the main body. The present invention aims to provide a device for mounting transformers, chokes, etc., in which the distance between the centers of the through holes for mounting screws does not change during the tightening process.

(Structure of the invention) The present invention is configured as follows.

(1) A simple linear structure can be installed as a device by extrapolating and installing the “Japanese”-shaped iron core of a transformer, choke, etc. from the lower end side.

E in the groove obtained by forming vertical walls with a U-shaped cross section at both ends of the center part.
The lower end of the E-shaped core is inserted, and the rectangular claws extending so as to protrude from the two upper ends of the vertical wall are bent to the inside of the window of the E-shaped core.

(3) The figure-eight and engineered core, which were conventionally fixed with an inverted U-shaped frame, are fixed by welding or adhesive.

(4) The shape of the claws provided at two locations (total of 4 locations) at the upper end of the vertical wall is a right-angled triangle with one end slanted, leaving part of the base of the claw, and the shape of the claw is a right-angled triangle with one side slanted. Fold inward 9
It serves to align the steel plates that make up the iron core when bending.

(Description of Embodiment) An embodiment of the present invention will be described with reference to FIGS. 4 to 7.

In FIG. 4, a device 11 for mounting transformers, chokes, etc. according to the present invention is a steel plate having a thickness of 0.5 to 12 mm, and has through holes 12a and 12b for mounting screws at both ends thereof.
Vertical walls 13a and 13b having a U-shaped cross section with a width equal to the width of the E-shaped iron core 4b on both sides of the central part, and walls from a height of 3 so as to protrude from two upper ends of each of the above-mentioned vertical walls 13a and 13b. 5 mm square claws 14a to 14d.

FIG. 5 shows a state in which the device 11 shown in FIG. 4 is attached to the E-shaped core 4b. After insertion, the claws 14a to 14d at the two upper ends of the vertical walls 13a and 13b are crimped so as to be bent inside the window of the E-shaped core 4b.

FIG. 6 shows the components of a small power transformer to which the installation device 11 is mounted according to the present invention and the order of their assembly.
For installation, insert the E-shaped core 4b into the groove formed by the vertical walls 13a and 13b in the center of the device 11, and then attach the claw 14.
After crimping and attaching the wires a to 14d so as to bend them inside the window of the E-shaped core 4b, the coil 8 wrapped with insulating paper 9 is inserted into the window of the E-shaped core 4b, and then the
a is fixed to the upper end of the E-shaped core 4b by welding or using an adhesive to form a "Japanese"-shaped core.

FIG. 7 shows the external appearance of a small power transformer with the device 11 attached to the main body of the power transformer as described above.

Another embodiment according to the present invention will be explained with reference to FIGS. 8 and 9. In FIG. 8, the mounting device 15 has through holes 16a and 16b for mounting screws provided at both ends, and vertical walls 17a and 17a having a U-shaped cross section and having a width equal to the width of the E-shaped core 4b on both sides of the central portion. 17b, and claws 19a to 1,9 which have parallel parts at their bases and whose tips are obliquely scraped to form oblique sides 18a to 18d so as to protrude from two upper ends of the respective vertical walls 17a and 17b.
It is composed of d.

FIG. 9 shows the installation shown in FIG. 8 between the claws 19a and 1.
9 d is bent and tightened to the inside of the window of the E-shaped core 4b, and the claws 19a and 19 facing each other from both sides are shown.
Narrow grooves are formed by the oblique sides 18a and isc of the right triangle provided at the tips of C119b and 19d, and by the isb and 18d, respectively.

(Effects of the Invention) As explained above, according to the present invention, the following effects can be obtained.

(1) Since the installation allows the device to be smaller, lighter, and simpler in shape, manufacturing costs are reduced.

(2) The through-holes for mounting screws provided on the flat plate are susceptible to the crimping work that attaches them to the main body of transformers, chokes, etc., so there is no change in the center-to-center distance, and this does not occur during the assembly crimping process. There is no longer any pitch deviation defect that deviates from the permissible center-to-center distance.

(3) The crimping process for attaching to the main body of the transformer, choke, etc. is extremely easy as the installation involves crimping the device and the E-shaped iron core together.

(4) In the case of a device equipped with triangular claws, it serves to align the misalignment of the steel plates constituting the iron core during the crimping process, making it easier to insert the coil.

(5) Due to the above effects, the manufacturing cost of small power transformers, chokes, etc. is significantly reduced, regardless of the addition of a new process of fixing the E-shaped core and the engineering-shaped core using welding or adhesive. is obtained.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the conventional installation of the device and the 9-shaped and ■-shaped cores, Figure 2 is a sectional view of the transformer body, and Figure 3 is the 1st
The installation shown in the figure is a perspective view of the power transformer with the device installed.
The figure shows a perspective view of the device installed in an embodiment of the present invention, FIG. 5 is a perspective view showing the device attached to the E-shaped core in FIG. FIG. 7 is a perspective view of the components of the transformer combined with the device, FIG. 7 is a perspective view of the power transformer with the device installed, and FIG. 8 is a perspective view of the device, showing the installation of another embodiment according to the present invention. , Figure 9 is the 8th
It is a top view which shows the state which the nail|claw of the figure is crimped. 1.11.15... Installation is on the device, 2a, 2b, 12a
. 12b, 16a, 16b--Through holes for mounting screws, 3
a+3b...Mounting legs, 4a...■-shaped iron core, 4b
-E-shaped core, 5a, 5b, 5cm = frame, 6
a, 6 c + 6 e, 6 f. 13a, 13b, 17a, 17b...Vertical wall, 7a
, 7c. 7d, 14a, 14b, 14c, 14d, 19a, 19
b, 19c. 19d...Claw, 8...Coil, 9...Insulating paper, 1
8a, 18b. 18c, 18d-- Hypotenuse. Patent applicant: Matsushita Electric Industrial Co., Ltd.Figure 1Figure 2Figure 3Figure 4Figure 5Figure 6Figure 7Figure 8Figure 9

Claims (2)

[Claims] (1) To attach a transformer, choke, etc. to the main body of the device, U-shaped vertical walls are formed on both sides of the center of a flat metal plate with through holes for mounting screws at both ends, and each vertical wall is Extend the square claws so that they protrude from the two upper ends, insert the iron core of the transformer, choke, etc. into the groove formed by the above U-shaped vertical wall, and fold the claws at the ends of the vertical wall into the windows of the iron core. A device for installing transformers, chokes, etc., which is characterized by being crimped and attached to the main body of the transformer, choke, etc. (2) Transformers, chokes, etc. are placed in the U-shaped groove formed in the vertical wall, which has a parallel part at the base and a right-angled triangular claw shaped at an angle at the tip so as to protrude from two upper ends of the vertical wall. A device for installing transformers, chokes, etc., characterized in that the iron core is inserted, the above-mentioned claws are folded into the window of the iron core, and then crimped to attach the transformer, choke, etc. to the main body of the transformer, choke, etc.