JPH0648153U - Deflection yoke - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a deflection yoke used in a television receiver or the like, which absorbs variations in the mounting position of the small cover. [Structure] A fitting rib 14 is provided on the horizontal coil bobbin 12, and the fitting rib 14 is erected perpendicularly to the surface of a rib 15 which is in contact with the small cover 13 and constitutes a bend-up. The small cover 13 has a hole 1 into which the fitting rib 14 of the horizontal coil bobbin 12 can be inserted and fitted.
6 and has a fitting rib 14 in the hole 1 of the small cover 13.
The small cover 13 is positioned by being fitted to the small cover 6. [Effect] Since the variation of the mounting position of the small cover 13 can be absorbed, the variation of various characteristics of the deflection yoke, especially the variation of the convergence, and the rotation of the small cover 13 about the tube axis of the cathode ray tube are mechanically prevented. be able to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a deflection yoke used in a television receiver or the like.

[0002]

[Prior art]

 The structure of the conventional deflection yoke will be described below with reference to the drawings. 5A is a plan view showing a small cover of a conventional deflection yoke, FIG. 5B is a side view of the small cover, and FIG. 5C is a bottom view of the small cover. Reference numeral 17 indicates the central axis of the cathode ray tube. 6 is a side view showing the horizontal coil bobbin 1 of the deflection yoke, and FIG. 7 is a plan view of the horizontal coil bobbin.

In FIG. 7, the horizontal coil bobbin 1 is provided with ribs 2, 3, 4, and 5. As shown in FIGS. 5A, 5B, and 5C, the small cover 6 is provided with ribs 7, 8, 9, and 10, and the ribs 2, 3, 4, 5 of the horizontal coil bobbin 1 and the small cover 6 are provided. The small cover 6 is fixed to the horizontal coil bobbin 1 by fitting with the ribs 7, 8, 9, 10. 8 is a side view of the deflection yoke in a completed state, and FIG. 9 is a perspective view of an essential part of the deflection yoke.

As described above, the small cover 6 and the ribs provided on the horizontal coil bobbin 1 perform the positioning of the mounting position of the small cover 6 to the deflection yoke body and the fitting to the deflection yoke body. After attaching the small cover 6 to the deflection yoke body, an adhesive (hot melt) 11 is applied as shown in FIG. 9 to reinforce rotation of the small cover 6 about the central axis 17 of the cathode ray tube. I was going.

[0005]

[Problems to be solved by the device]

 In such a conventional deflection yoke, when the small cover 6 is assembled, variations in the mounting position of the small cover 6 cause variations in the characteristics of the deflection yoke, particularly in the convergence, and in the set of the television receiver. When the temperature becomes high, there is a problem that the fitting strength of the small cover 6 to the deflection yoke body becomes weak.

The present invention solves the above-mentioned problems, and it is possible to easily fit the small cover 6 to the deflection yoke main body at the stage of assembling the small cover 6, and there is variation in the mounting position of the small cover. By having a mechanism capable of absorbing, variations in characteristics of the deflection yoke, in particular, variations in convergence are reduced, and the small cover 6 mechanically prevents the deflection yoke body from rotating about the central axis of the cathode ray tube. The purpose of the present invention is to provide a deflection yoke that can be used.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the deflection yoke of the present invention can insert or fit a horizontal coil bobbin having a rib standing upright at the bend-up portion of the horizontal coil bobbin in contact with the small cover, and the rib. It consists of a small cover with holes.

[0008]

[Action]

 With the above structure, the present invention has a mechanism that allows the small cover to be easily fitted to the deflection yoke body at the assembly stage of the small cover and can absorb the variation in the mounting position of the small cover. It is possible to reduce the variations in the characteristics of the yoke, particularly the convergence, and to mechanically prevent the rotation of the small cover about the central axis of the cathode ray tube.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a horizontal coil bobbin 12 of the present invention. 3 (a) and 3 (b) show the small cover 13 of the present invention. In the horizontal coil bobbin 12, 14 is a fitting rib. The fitting rib 14 is erected perpendicularly to the surface of the rib 15 that is in contact with the small cover 13 and constitutes a bend-up.

As shown in FIGS. 3A and 3B, the small cover 13 has a hole 16 into which the fitting rib 14 of the horizontal coil bobbin 12 can be inserted and fitted. Further, the small cover 13 can prevent the deflection yoke main body from rotating about the cathode ray tube. FIG. 4 is a sectional view of the horizontal coil bobbin 12 and the small cover 13 before fitting.

The completed deflection yoke is as shown in FIG. As described above, in the deflection yoke according to the present embodiment, the small cover 13 can be easily fitted to the deflection yoke main body at the stage of assembling the small cover 13, and the mounting position of the small cover 13 varies. By having a mechanism capable of absorbing the above, it is possible to reduce variations in various characteristics of the deflection yoke, in particular, in convergence, and to rotate the small cover 13 about the central axis 17 of the cathode ray tube with respect to the deflection yoke body. Can be prevented.

[0012]

[Effect of device]

 As is apparent from the above embodiments, according to the present invention, it is possible to easily fit the small cover to the deflection yoke body during the assembly process of the small cover, and the variation in the mounting position of the small cover. By having a mechanism capable of absorbing the above, it is possible to reduce the variations in various characteristics of the deflection yoke, especially the convergence, and further to prevent the small cover from rotating around the central axis of the cathode ray tube with respect to the deflection yoke body. It is possible to provide a deflection yoke that can be mechanically prevented.

[Brief description of drawings]

FIG. 1 is a side view showing a horizontal coil bobbin of a deflection yoke according to an embodiment of the present invention.

FIG. 2 is a plan view showing a horizontal coil bobbin of a deflection yoke in the same embodiment.

FIG. 3A is a side view showing a small cover of the deflection yoke in the same embodiment. FIG. 3B is a plan view showing a small cover of the deflection yoke in the same embodiment.

FIG. 4 is a cross-sectional view showing a state before the small cover of the deflection yoke and the horizontal coil bobbin are fitted together in the embodiment.

5A is a plan view showing a small cover of a conventional deflection yoke, FIG. 5B is a side view showing a small cover of a conventional deflection yoke, and FIG. 5C is a bottom view showing a small cover of a conventional deflection yoke.

FIG. 6 is a side view showing a horizontal coil bobbin of a conventional deflection yoke.

FIG. 7 is a plan view showing the horizontal coil bobbin.

FIG. 8 is a side view of the deflection yoke in a completed state.

FIG. 9 is a perspective view of a main part of a conventional deflection yoke.

[Explanation of symbols]

 12 Horizontal coil bobbin 13 Small cover 14 Rib for fitting 15 Rib 16 hole

Claims (1)

[Scope of utility model registration request] 1. A horizontal coil bobbin for fixing a shape of a horizontal coil for generating a deflection magnetic field for horizontally deflecting an electron beam of a cathode ray tube, and a small cover for fixing a frame collector and holding a fixing band. The horizontal coil bobbin has a horizontal coil bobbin having a plurality of fitting ribs which are vertically erected on the surface of the bend-up rib of the horizontal coil bobbin in contact with the horizontal coil bobbin, and a small cover having a plurality of holes into which the fitting ribs can be inserted. A deflection yoke, wherein the fitting rib of (1) is inserted into a hole of the small cover to position the small cover.