JP2606833Y2 - Coil bobbin device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil bobbin device used for a coil for improving the characteristics of a deflection yoke.

[0002]

2. Description of the Related Art As is well known, a deflection yoke is used to correct convergence (color shift between blue B and red R on the screen of a cathode ray tube) and green sensitivity (up and down of green G with respect to blue B and red R). Various coils for correcting (color shift) are provided. These coils are formed by winding a coil winding around a coil bobbin device having a core therein. FIG. 3 shows a coil bobbin device used for an FC (Field Control) coil for correcting green sensitivity of a deflection yoke. I have.

In this type of coil bobbin device, a coil bobbin 3 made of synthetic resin is formed by injection molding so as to cover the base plate 2 side of a U-shaped core 1, and both ends of the coil bobbin 3 are extended to form a pin holding portion 8. A pin terminal 4 is provided to project through the pin holding portion 8 while keeping a distance from the core 1. A coil winding (not shown) is wound around the winding drum 5 of the coil bobbin 3. , FC coils are formed.

[0004] As shown in FIG. 4, the FC coil is disposed opposite to the top and bottom sides of the neck end of the deflection yoke 6. The FC coil is a vertical deflection coil (see FIG. 4) of the deflection yoke 6. (Not shown), and when driving the deflection yoke, the current from the vertical deflection coil side
A correction magnetic field is generated, and the green sensitivity is adjusted by the correction magnetic field.

[0005]

However, in the conventional coil bobbin device, the pin terminals 4 are disposed outside the core 1 with a distance from the core 1, so that the pin holding portion 8 is not provided. The overhang dimension is large,
There has been a problem that the coil bobbin device is bulky and bulky at both ends and the deflection yoke to which the FC coil is mounted also becomes large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a coil bobbin device which can prevent the bulk of the coil bobbin device and reduce its size.

[0007]

The present invention is configured as follows to achieve the above object. That is, the present invention relates to a coil bobbin device in which a core is accommodated and fixed inside a coil bobbin made of synthetic resin, and terminals for connecting coil terminals are protruded at both ends of the coil bobbin.
At both ends of the core inside the coil bobbin, insertion openings for terminal insertion are provided, and the terminal passes through the insertion opening through the core.
It penetrates in a non-contact state and protrudes out of the coil bobbin, and the core, the coil bobbin, and the terminal are formed by integral molding.

[0008]

In the present invention having the above-described structure, insertion openings are provided at both ends of the core, and terminals are provided through the insertion openings. Therefore, conventional terminals are arranged outside the core while maintaining a distance from both ends of the core. Compared to the example, there is no bulkiness at both ends of the coil bobbin, and the coil bobbin device can be downsized.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In the description of the present embodiment, the same reference numerals are given to the same names as those in the conventional example, and the duplicated description thereof will be omitted. FIG. 1 shows an embodiment of the coil bobbin device according to the present invention. The coil bobbin device of this embodiment is obtained by integrally molding a U-shaped core 1, a coil bobbin 3 made of synthetic resin, and a pin terminal 4 by injection molding. In this embodiment, an insertion opening 7 is formed, and the pin terminal 4 is inserted and arranged through the insertion opening 7. The other configuration is the same as that of the conventional example.

[0010] Insertion openings 7 formed at both ends of the core 1
Is a hole shape having a larger diameter than the pin terminal 4 as shown in FIG. 2A, or a slit groove wider than the diameter of the pin terminal 4 as shown in FIG. It is formed by shaping.

The coil bobbin device of this embodiment is manufactured as follows. First, the core 1 is placed in a mold for injection molding, and the pin terminal 4 is held in a state where the pin terminal 4 is inserted through the insertion opening 7 of the core 1 (the core 1 and the pin terminal 4 are not in contact with each other). By injecting and solidifying a synthetic resin into a mold, a coil bobbin device as shown in FIG. 1 is manufactured.

A coil winding is wound around the winding drum 5 of the coil bobbin 3 of the coil bobbin device, and the terminal of the wound coil is connected to the corresponding pin terminal 4 to form an FC coil. It will be.

In the coil bobbin apparatus of the present embodiment, the pin terminals 4 are provided through the insertion openings 7 of the core 1 without being provided outside the core 1, so that the pin terminals 4 are provided outside the core 1 as in the conventional example. It is not necessary to make the projecting portion of the coil bobbin 3 in which the pin terminals 4 are installed large, so that the outwardly projecting dimension of the pin holding portion 8 of the coil bobbin 3 can be made small, and accordingly, the bulkiness can be reduced. Is achieved.

Therefore, the space for mounting the FC coil using the small-sized coil bobbin device on the deflection yoke can be reduced, and the deflection yoke can be reduced in size.

The present invention is not limited to the above embodiment, but can take various embodiments. For example, in the above embodiment, the insertion opening 7 has a round shape (including a semi-circle) or a groove shape, but the shape of the insertion opening 7 is not necessarily limited to the shape of the embodiment, but depends on the specification. It can take various other shapes.

Also, the terminals are not limited to the pin type, but may be other shapes such as a plate.

Further, in the above embodiment, the coil bobbin device of the FC coil has been described. However, the coil bobbin device of the present invention is also applied as a coil bobbin device of a convergence correction coil for improving the characteristics of the deflection yoke. The present invention is also applied to a coil bobbin device for a coil used other than the deflection yoke.

[0018]

According to the present invention, the insertion openings are provided at both ends of the core, and the terminals are projected through the insertion openings. In this case, the overhanging portion of the coil bobbin, which was necessary in the above, is no longer necessary, and thereby the size of the coil bobbin device is reduced. Space saving is achieved, and the size of the deflection yoke and the like can be reduced. Also, the terminals do not contact the core
Since it penetrates in the state, the core from the coil through the terminal
Conduction to the coil can be reliably prevented, and the insulation of the coil
Can be kept good. This leads to poor insulation
The problem of deterioration of coil characteristics caused by this can be avoided.
You.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view showing one embodiment of a coil bobbin device according to the present invention.

FIG. 2 is an explanatory diagram of various forms of an insertion opening formed in a core.

FIG. 3 is an explanatory view of a conventional coil bobbin device.

FIG. 4 is an explanatory diagram showing an arrangement of an FC coil formed by winding a coil winding around a coil bobbin device on a deflection yoke.

[Explanation of symbols]

 1 core 3 coil bobbin 4 pin terminal 7 insertion opening

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-10909 (JP, A) JP-A-62-150706 (JP, A) JP-A-6-168824 (JP, A) 39808 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01F 27/32 H01F 27/29 H01F 27/28

Claims (1)

(57) [Scope of request for utility model registration] 1. A coil bobbin device in which a core is accommodated and fixed inside a coil bobbin made of synthetic resin, and a terminal for connecting a coil terminal is protruded at both ends of the coil bobbin. Is provided with an insertion opening for terminal insertion, the terminal passes through the insertion opening , penetrates the core in a non-contact state, and protrudes out of the coil bobbin, and the core, the coil bobbin, and the terminal are formed by integral molding. apparatus.