JPH0731491Y2 - Deflection yoke device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a deflection yoke device, and more particularly to an improvement in an adhesive fixing structure for a bobbin and a horizontal deflection coil.

[Conventional technology]

FIGS. 4 and 5 show a general deflection yoke device mounted on a cathode ray tube of a television receiver or a display device. In this type of deflection yoke device, a pair of paddle-shaped horizontal deflection coils 2 are mounted on the top side and the bottom side along an inner peripheral surface of a bobbin 1 having a bosh-like shape.
A core 3 is mounted on the outer peripheral surface side of the core 3, and windings are wound in a toroidal shape on the top side and the bottom side of the core 3 to form a vertical deflection coil 4. The horizontal deflection coils 2 on the top side and the bottom side are partitioned by fin-shaped separators 5 provided on the left and right sides of the inner peripheral surface of the bobbin 1 along the axial direction. A thermoplastic adhesive (hot melt adhesive) 6 is applied to the upper and lower sides of the separator 5 on the inner surface side of the enlarged head portion 10 of the bobbin 1, and the horizontal deflection coil 2 is integrally fixed to the bobbin 1. There is.

[Problems to be solved by the device]

However, in this type of deflection yoke device, when the thermoplastic adhesive 6 is applied to both upper and lower sides of the separator 5,
There are various modes of the flow of the adhesive 6, and for example, as shown in the bonding portion of FIG. 6A, when most of the adhesive 6 flows along the peripheral edge of the bobbin 1, There is a problem that a gap 7 is formed between the horizontal deflection coil 2 and the effective bonding area of the both 1 and 2 and the fixing force of the horizontal deflection coil 2 to the bobbin 1 is weakened. In order to avoid this, if the coating amount of the adhesive 6 is increased, the horizontal deflection coil 2 and the bobbin 1 as shown in the bonded portion of FIG.
The adhesive 6 is filled in a space between the gaps and the effective adhesive area is increased and the adhesive fixing force is strengthened. However, since a large amount of the adhesive 6 is poured, there is a problem that the amount of the adhesive 6 used is wasted. .

Further, as shown in FIGS. 7 and 8, there is also a deflection yoke device of a type in which holes 8 for holding lead wires are provided on both upper and lower sides of the separator 5 of the bobbin 1 so as to sandwich it. If there is a hole 8 in the hole, the applied adhesive 6 will leak from the hole 8 to the outside, and not only is the adhesive 6 wasted wastefully, but the adhesive 6 stuck in the hole 8 must be wiped off. There is a trouble in work that does not happen.

The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to apply an equal amount of adhesive to the adhering points in a substantially equal amount without waste, to achieve a uniform effective adhering area, and to provide a horizontal deflection coil. It is an object of the present invention to provide a deflection yoke device that can be reliably fixed to a bobbin with a necessary and sufficient fixing force.

[Means for Solving the Problems]

The present invention is configured as follows to achieve the above object. That is, the present invention is directed to a bobbin head side in a deflection yoke device in which horizontal deflection coils are provided on the top side and the bottom side with separators projecting like fins on the left and right sides of the inner peripheral surface of the bobbin as boundaries. On the inner surface of the enlarged diameter part, ribs are provided on both upper and lower sides with the separator interposed therebetween, and an adhesive for fixing the horizontal deflection coil to the bobbin is applied between the rib and the separator. There is.

[Action]

In the present invention, when an adhesive is applied between the rib and the separator provided on the inner surface of the bobbin head side, the flow of the applied adhesive in the circumferential direction of the bobbin is restricted by the rib and the separator. The adhesive spreads evenly between the ribs, the separator and the horizontal deflection coil, and at each bonding location, an approximately equal amount of adhesive is used for a uniform effective bonding area to ensure reliable bonding between the horizontal deflection coil and the bobbin. Fixation is done.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. In the description of the present embodiment, the same parts as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

1 to 3 show the construction of an embodiment of the deflection yoke device according to the present invention. In the deflection yoke device of this embodiment, as in the conventional example, a pair of horizontal deflection coils 2 are mounted on the top side and the bottom side along the inner peripheral surface of the bobbin 1, and the core 3 is disposed on the outer peripheral side of the bobbin 1. Wear this, this core 3
The vertical deflection coil 4 is formed by winding a winding in a toroidal shape at the positions of the top side and the bottom side. Further, on the inner peripheral surface of the enlarged head portion 10 of the bobbin 1, holes 8 for holding the lead wires are formed at the upper and lower positions with the separator 5 sandwiched therebetween.

A characteristic of this embodiment different from the conventional example is that ribs 12 are provided on the inner surface side of the head enlarged diameter portion 10 of the bobbin 1 so as to sandwich the separator 5 at the upper and lower positions thereof. In this embodiment, the rib 12 is provided closer to the separator 5 than the hole 8 (inside the hole 8). An adhesive application area is formed between the rib 12 and the separator 5, and the thermoplastic adhesive 6 is applied to this area, and the horizontal deflection coil 2
Is fixed to the bobbin 1.

As described above, according to the present embodiment, the ribs 12 are provided on both the left and right sides of the bobbin 1 with the separator 5 sandwiched therebetween. Therefore, when the adhesive 6 is applied between the rib 12 and the separator 5, Since the flow of the adhesive in the circumferential direction is restricted by the ribs 12 and the separator 5, the applied adhesive 6 spreads evenly to the horizontal deflection coil 2 side, and the horizontal deflection coil 2 is provided with a proper amount of the wasteless adhesive. Is stably fixed to the bobbin 1. Therefore, the amount of adhesive applied at each bonding point A, B, C, D is almost equal, and the effective bonding area is also uniform, and the horizontal deflection coil 2 is almost at each bonding point A, B, C, D. It is fixed to the bobbin 1 in a well-balanced manner with the same necessary and sufficient adhesive force.

Moreover, when the horizontal deflection coil 2 is bonded and fixed, the rib 12 is provided closer to the separator 5 than the hole 8, so that the adhesive 6 applied to the bonding points A to D is the hole 8.
Never leaks out. Therefore, it is possible to prevent the waste of the adhesive due to the hole leakage, and also to release the troublesome work of wiping off the adhesive that has leaked into the hole 8 and is clogged.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and various embodiments can be adopted. For example, in the above embodiment,
I made holes 8 on the left and right sides of bobbin 1
This hole 8 may be omitted.

In the above embodiment, the horizontal deflection coil 2 is a saddle-shaped coil, and the vertical deflection coil 4 is a toroidally wound coil deflection yoke device (saddle-toroidal type deflection yoke device). The present invention is also applied to a deflection yoke device (saddle-saddle type deflection yoke device) that uses a square-shaped coil for both the horizontal deflection coil and the vertical deflection coil.

[Effect of device]

Since the present invention has ribs projecting from the upper and lower sides of the separator on the inner surface of the bobbin head side, when the adhesive is applied between the rib and the separator, the applied adhesive is Circular flow is regulated by ribs and separators and spreads evenly on the horizontal deflection coil side. At each bonding point, the horizontal deflection coil is secured with an approximately equal amount of adhesive to secure a uniform effective bonding area. It can be securely fixed to the bobbin with sufficient adhesive force. In this way, since the horizontal deflection coil can be fixed with almost the same amount of adhesive and with substantially the same adhesive area, it is possible to balance the adhesive force between the respective adhesive points and Waste can be prevented.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a deflection yoke device according to the present invention seen from the head side, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a bobbin constituting the embodiment. FIG. 4 is a front view seen from the side, FIG. 4 is a front view seen from the head side of a conventional deflection yoke device,
FIG. 5 is a side view of FIG. 4, FIG. 6 is an explanatory view showing an adhesive fixing state of a horizontal deflection coil in a conventional device, and FIG. 7 is a head side view of a conventional deflection yoke device with lead wire fastening holes. The front view seen from FIG. 8 is a side view of FIG. 1 ... Bobbin, 2 ... Horizontal deflection coil, 3 ... Core, 4
... Vertical deflection coil, 5 ... Separator, 6 ... Adhesive, 7 ... Gap, 8 ... Hole, 10 ... Head enlarged diameter part, 12 ...
…rib.

Claims (1)

[Scope of utility model registration request] 1. A deflection yoke device in which horizontal deflection coils are provided on the top side and the bottom side of a bobbin on both sides of the inner peripheral surface of the bobbin with separators projecting like fins as boundaries, The deflection yoke device is characterized in that ribs are provided on the upper and lower sides of the inner surface of the enlarged diameter portion so as to sandwich the separator, and an adhesive for fixing the horizontal deflection coil to the bobbin is applied between the rib and the separator. .