JP2583896Y2 - Deflection yoke 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 deflection yoke device having a coil housed in a ring-shaped bobbin.

[0002]

2. Description of the Related Art In general, when a cathode ray tube is mounted on a box of a television receiver or the like, a slight displacement may occur in the mounting position. The slight mechanical shift causes a shift in the raster pattern of the television screen. The deviation of the television screen is corrected by attaching a rotation coil to the deflection yoke, applying a current to the rotation coil to generate a magnetic field, and using this magnetic field to electrically correct the deviation of the raster pattern on the television screen. Have been. This type of rotation coil has a ring-shaped coil housed inside a ring-shaped bobbin. FIG. 5 is an explanatory view showing a state in which the bobbin of the rotation coil is fitted and mounted on the deflection yoke. I have. An enlarged diameter portion 7 is formed on the head side of the deflection yoke 5, and the bobbin 6 of the ring-shaped rotation coil is inserted from the neck side of the deflection yoke 5 and the enlarged diameter portion 7 on the head side.
The bobbin 6 of the rotation coil is fixed to the enlarged diameter portion 7 by the frictional force of the fitting or the adhesive force of the adhesive.

[0003]

However, when packing and transporting the deflection yoke 5 to which the rotation coil bobbin 6 is mounted, since the deflection yoke 5 is packed in a cardboard with the head side facing downward, the transportation is not performed. Vibration is applied as an external force from the head side to the neck side, and the external force causes the deflection yoke 5 of the rotation coil bobbin 6 to move.
When the frictional fixing force and the adhesive force to the rotation coil are insufficient, there is a problem that the bobbin 6 of the rotation coil comes off the enlarged diameter portion 7 of the deflection yoke 5 toward the neck.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a deflection yoke device having a coil housed in a ring-shaped bobbin by transporting to a bobbin when packing and transporting. Even if external force such as vibration is applied,
An object of the present invention is to provide a deflection yoke device that does not cause the bobbin to be detached from the deflection yoke.

[0005]

The present invention is configured as follows to achieve the above object. That is, the deflection yoke device of the present invention is a deflection yoke device in which a coil housed in a ring-shaped bobbin is fitted and mounted on the head of the bobbin of the deflection yoke. Is the center of the deflection yoke with one or more fins
Projecting axially in the same direction, this is the fin plate and the engaging claw is provided on the bobbin of the coil, the bobbin deflection yoke when fitted from the head side of bobbin of the deflection yoke An abutment plate portion with which the front end surface of the head abuts and a fin plate fitting groove in which the fin plate is fitted are provided. Surface is formed ,
Also, the circumferential direction is to head the outer peripheral surface of the bobbin of the deflection yoke
A plurality of positioning pieces protrude at intervals in the direction
The bobbin is fitted with the positioning pieces without rattling.
Mating grooves are provided to match each positioning piece
The positioning mating groove that fits
Between the coil and the coil housed in the ring-shaped bobbin.
And the positioning in the rotation direction is performed.

[0006]

In the present invention having the above-described structure, when the bobbin of the coil is fitted and mounted on the bobbin of the deflection yoke, the fin plate having the spring property is pushed and expanded by the wall surface of the fin plate fitting groove and enters the fitting groove. When the fin plate is inserted and the engaging claw of the fin plate reaches the engagement receiving surface, the fin plate returns to the original position by the elastic restoring force, and the engaging claw engages with the engagement receiving surface.

At this time, the front end face of the head of the bobbin of the deflection yoke abuts against the abutment plate of the bobbin of the coil, and the fitting of the coil bobbin to the deflection yoke is completed. Also this
At the time of fitting, the positioning piece on the bobbin side of the deflection yoke
Ring-shaped bobbin side positioning fitting groove does not rattle
By fitting, housed in deflection yoke and ring-shaped bobbin
Positioning with the set coil is achieved.

[0008]

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 detailed description thereof will be omitted. This embodiment relates to a deflection yoke device provided with a bobbin of a ring-shaped rotation coil, similarly to the conventional example, and the feature of this embodiment is that the bobbin of the deflection yoke and the bobbin of the rotation coil are mounted. The structure is a unique structure, and the other structure is the same as that of the conventional example. FIG. 1 shows an example of a unique mounting structure of the deflection yoke 5 and the bobbin 6 of the rotation coil. FIG. 2 is a detailed explanatory view of the fitted state of the bobbin 6 and the deflection yoke 5 of the rotation coil of the embodiment. FIG. 3 is a cross-sectional view of a main part configuration showing a fitted state of the bobbin 6 and the deflection yoke 5 of the rotation coil of the embodiment. In these figures, the outer peripheral surface 16 of the head-side enlarged diameter portion 7 of the deflection yoke 5 is shown.
In this case, at least one or more, in this embodiment, four fins 10 are symmetrically positioned with respect to the outer peripheral surface 16 in the deflection yoke 5.
An engaging claw 11 is provided on the distal end side of the head of the fin plate 10 , as shown in FIG. The bobbin 6 of the rotation coil is provided with a fin plate fitting groove 14 into which the fin plate 10 fits.
An engagement receiving surface 15 with which the ten engagement claws 11 are engaged is formed,
A taper 9 is provided at an edge of the fin plate fitting groove 14 on the entrance side so that the fin plate 10 can easily fit into the fin plate fitting groove 14. The bobbin 6 of the rotation coil includes
When the deflection yoke 5 is fitted from the bobbin 1 head side,
An abutment plate portion 13 is provided to which the bobbin of the deflection yoke, that is, the head front end surface 12 of the head-side enlarged diameter portion 7 abuts.

A plurality of positioning pieces 18 (four in this embodiment) are provided on the outer peripheral surface 16 of the head-side enlarged diameter portion 7 of the deflection yoke 5.
), Protruding at symmetrical positions in the circumferential direction of the outer peripheral surface 16 with an interval therebetween, and a positioning fitting groove 19 to be fitted to the positioning piece 18 is provided on the inner peripheral surface 22 of the bobbin 6 of the rotation coil. As shown in FIG. 4, the positioning piece 18 and the positioning fitting groove 19 are fitted to each other, and the deflection yoke 5 and the bobbin 6 of the rotation coil are mounted. A taper 21 is provided at the edge of the positioning fitting groove 19 on the entrance side so that the positioning piece 18 can easily fit into the positioning fitting groove 19. The shape of the positioning piece 18 and the positioning fitting groove 19 are set so that there is no play between them.

In this embodiment, the rotation coil bobbin 6 is connected to the head enlarged diameter portion 7 from the head side of the bobbin of the deflection yoke 5.
When fitted to the fin plate, the fin plate 10 having a spring property is guided along the taper 9 of the inlet side edge 20 of the fin plate fitting groove 14, and is fitted while being pushed and expanded by the wall surface of the fitting groove 14. Groove
When the front end surface 12 of the bobbin of the deflection yoke 5 reaches the position of the butting plate portion 13 and comes into contact therewith, the fin plate 10 returns to the position before being expanded by the elastic restoring force. Then, the engagement claw 11 and the engagement receiving surface 15 are engaged and mounted.

When the engaging claw 11 is inserted, the positioning piece 18 is inserted into the fitting groove 19 along the taper 21 of the positioning fitting groove 19, and the front end face 12 of the head of the bobbin of the deflection yoke 5 is moved. The positioning piece 18 and the positioning fitting groove 19 are fitted without play when abutting against the butting plate portion 13, and the fitting and mounting of the rotation coil bobbin 6 to the deflection yoke 5 are completed. In this embodiment, as shown in FIG. 2, the bobbin 6 of the rotation coil is connected to the deflection yoke 5 via a gap 23 between the inner peripheral surface 17 of the rotation coil bobbin 6 and the outer peripheral surface 16 of the bobbin of the deflection yoke 5. However, as described above, since the positioning piece 18 is fitted without looseness in the fitting groove 19, the position regulation of the bobbin 6 of the rotation coil is achieved, and the gap 23 is affected. The bobbin 6 is not displaced from the deflection yoke 5 in any of the vertical direction (the direction of arrow A in FIG. 1), the left and right (the direction perpendicular to the plane of FIG. 1), and the rotational direction. 5 is stably held in a fixed position.

With the above configuration, when the deflection yoke device of the present embodiment is packed and transported, even if an external force such as vibration due to the transport is applied to the deflection yoke device, the engagement claw 11 and the engagement receiving surface 15 remain in contact. The rotation coil bobbin 6 is attached to the deflection yoke 5 by the butting plate 13 because the front end face 12 of the bobbin of the deflection yoke 5 is in contact with the butting plate 13 of the bobbin 6 of the rotation coil. The rotation coil bobbin 6 is prevented from coming off the head side of the deflection yoke 5 by the engaging claw 11, so that the bobbin 6 of the rotation coil does not come off from the deflection yoke 5.

Further, the mold for manufacturing the deflection yoke and the bobbin 6 of the rotation coil according to the present embodiment having the fin plate 10 and the fin plate fitting groove 14 can be obtained by simply performing a simple processing in the direction in which the conventional mold is removed. Therefore, the production is easy, and the conversion from the conventional product to the product of the present embodiment can be smoothly performed.

The present invention is not limited to the above embodiment, but can take various embodiments. For example, in the above-described embodiment, an example is shown in which the rotation coil is fitted and mounted on the bobbin head of the deflection yoke, but the coil that is fitted and mounted is not limited to the rotation coil.

[0015]

[Effect of the Invention] The present invention is housed in a ring-shaped bobbin.
In the deflection yoke apparatus having coils (the rotation coil) was, as the fitting structure of the fin plate fitting groove of the fin plate and a ring-shaped bobbin side of the deflection yoke side a fitting portion of the deflection yoke and a ring-shaped bobbin, Further, since the abutting plate portion of the ring-shaped bobbin and the front end surface of the bobbin of the deflection yoke are in contact with each other, the fitting of the ring-shaped bobbin from the head side of the deflection yoke requires the fin plate. The engaging claw and the engaging receiving surface of the fin plate fitting groove are engaged and mounted, and at the same time, the butting plate portion and the front end face of the head come into contact with each other to complete the fitting and mounting. When the apparatus is packed and transported, there is no concern that the ring-shaped bobbin will come off from the bobbin of the deflection yoke due to external force such as vibration as in the related art.

[0016] Also, attach the ring-shaped bobbin to the head of the deflection yoke.
Position of the deflection yoke on the bobbin when fitted to the part
Determining piece rattles in the positioning fitting groove of the ring-shaped bobbin
Fitting, so that the ring-shaped bobbin
The deflection yoke and ring shape
Direction and rotation direction with coil housed in bobbin
Positioning is achieved, and the positioning state is fixed with adhesive
And can be stably maintained without the need for the above means. That
As described above, the ring-shaped bobbin is the bobbin of the deflection yoke.
The abutment plate abuts against the tip end face of the
The claw is engaged with the engagement receiving surface on the bobbin side of the deflection yoke.
And was housed in a ring-shaped bobbin with respect to the deflection yoke
The center axis direction connecting the coil to the head and tail of the deflection yoke
And the positioning condition is maintained stably.
Raster by coils housed in a ring-shaped bobbin
It is possible to accurately and accurately correct pattern misalignment.
Things.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a main configuration of a deflection yoke device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a main configuration of an engagement portion between a deflection yoke and a rotation coil bobbin of the deflection yoke device.

FIG. 3 is a cross-sectional view showing details of an engagement portion in FIG. 2;

FIG. 4 is a sectional view of a positioning engagement portion between a deflection yoke and a rotation coil in the embodiment.

FIG. 5 is an explanatory view showing a mounted state of a deflection yoke provided with a conventional rotation coil.

[Explanation of symbols]

 5 Deflection yoke 6 Rotation coil bobbin 7 Head side enlarged diameter portion 10 Fin plate 11 Engagement claw 13 Butt plate portion 14 Fin plate fitting groove

Claims (1)

(57) [Scope of request for utility model registration] 1. A deflection yoke device in which a coil housed in a ring-shaped bobbin is fitted and mounted on the head of a bobbin of a deflection yoke, wherein at least one piece is provided on the outer peripheral surface of the head of the deflection yoke bobbin. Fins in the same direction as the center axis of the deflection yoke
The projecting, and the engaging claw is provided in this fin plate,
The ring-shaped bobbin has a butting plate portion with which the front end face of the head of the bobbin of the deflection yoke abuts when fitted from the head side of the bobbin of the deflection yoke, and a fin plate fitting with which the fin plate fits. groove and is provided, and the engagement receiving surface is formed the engagement claws of the fin plate is engaged in the fin plate fitting grooves, also, before
Circumferentially spaced on the outer peripheral surface of the bobbin head of the deflection yoke
A plurality of positioning pieces are protruded through the ring-shaped
The bobbin has a position where it can be fitted without looseness with each of the positioning pieces.
A positioning groove is provided, and the position corresponding to each positioning piece
The mating groove is fitted without play and the deflection yoke
And rotation with the coil housed in the bobbin
A deflection yoke device characterized in that the direction is determined.