JPS5933158Y2 - Deflection yoke fixing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fixing device for fixing a deflection yoke to a cathode ray tube in a television receiver.

Fig. 1 shows a conventional fixing device of this type, with the neck of the cathode ray tube cut away from the rear side, where 1 is the neck of the cathode ray tube, and 2 is the rear part of the synthetic resin of the deflection yoke fitted thereon. A portion 3 fitted to the cathode ray tube neck portion 1 is a metal clamp placed on the portion 2 and tightened with screws 4.

In this conventional device, the contact surfaces of the part 2 and the clamp 3 are flat, so even if they are fixed with force, sufficient tightening can be done during the heat resistance test [During the heat, part 2 contracts and the clamp 3 stretches] ], the tightening force deteriorates, and therefore the force for holding the deflection yoke to the cathode ray tube becomes weak, resulting in the defect that the deflection yoke may be displaced from the specified position due to vibrations and falls.

In order to solve this problem, there are countermeasures such as inserting a rubber inclusion between the portion 2 and the cathode ray tube neck 1, but this brings about other drawbacks such as an increase in the number of parts and the number of assembly steps. Undesirable.

The present invention proposes a deflection yoke fixing device devised to eliminate these drawbacks.

As shown in FIGS. 2 and 3, the present invention is a synthetic resin rear part of a deflection yoke that is made of metal (e.g., made of stainless steel) that is applied over a part 2 that loosely fits into the neck part 1 of a cathode ray tube and tightens said part 2. ) are formed with bifurcated cut-and-raised pieces 3a in the circumferential direction that protrude inwardly at a plurality of opposing positions of the circular clamp 3, and when tightened, these cut-and-raised pieces 3a touch the portion 2. It is characterized by biting into the thick part other than the groove.

According to this, the bonding force between the portion 2 and the clamp 3 is extremely large, and it is possible to eliminate the possibility that the tightening force will deteriorate due to a heat resistance test or the like.

The bifurcated cut and raised pieces in the circumferential direction each exert a pressing force at two points to increase the holding force, and the bifurcated cut and raised pieces are provided at a plurality of opposing positions of the clamp. Tightening stabilizes the condition.

Further, since the number of parts does not increase, it is suitable in terms of cost and assembly work.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a conventional deflection yoke fixing device. FIG. 2 is a sectional view of a deflection yoke fixing device embodying the present invention, and FIG. 3 is a perspective view of its components. 1... CRT neck part, 2... CRT neck part of the deflection yoke, 2... Portion loosely fitted into the CRT neck part of the deflection yoke, 3a... ...Cut and raised piece, 4...screws. 3... Clamp,

Claims (1)

[Scope of utility model registration request] 1. Two circumferential prongs protruding toward the inner surface at a plurality of opposing positions of a metallic circular clamp that is placed on the portion of the synthetic resin rear portion of the deflection yoke that loosely fits into the cathode ray tube and tightens the portion. 1. A deflection yoke fixing device characterized in that each of the cut and raised pieces is formed in a shape such that the cut and raised pieces are bitten into a thick portion of the portion other than the groove.