JP2605901Y2 - Core for deflection yoke - 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 core mounted on a television receiver or a display device.

[0002]

2. Description of the Related Art FIG. 7 is a perspective view of a conventional deflection yoke core. The deflection yoke core 1 is composed of half-split cores 1A and 1B.
A and 1B are provided with fitting grooves 4 along the mating surface side of the core 1, respectively. The springs 2 are fitted into these fitting grooves 4, and both are mounted, and both are integrated.

[0003]

However, since the core 1 is formed by firing the core material, it is difficult to form the core 1 with good shape and dimensional accuracy. Therefore, it is necessary to adjust the shape and dimensions. However, when adjusting the core 1, it is necessary to grasp an arbitrary position, remove it after processing by polishing or the like, and then check the processing condition.
Also, grab an arbitrary position and check the shape and dimensions,
When the dimensions are rejected, the polishing is further performed, and the operations of the polishing and the dimension check are repeated. However, each time, the position to be gripped is not constant, and there is a problem that the processing accuracy is not good. Also, when assembling this core into a deflection coil, it is necessary to adjust the position with the deflection coil by grasping an arbitrary position each time, that is, an arbitrary position that is not related to the position of the core adjustment processing and the dimension check. Therefore, there is a problem that the respective reference positions for processing, dimension checking, and assembling are different, and the assembling accuracy is not sufficient.

The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a deflection yoke capable of accurately performing core correction processing, dimension measurement, and the like and capable of accurately assembling. It provides the core.

[0005]

The present invention is configured as follows to achieve the above object. That is, in the deflection yoke core of the first invention , a straight portion is formed on the entire outer circumferential surface of the cylindrical deflection yoke core at a position on the neck side , and this straight portion has a cylindrical deflection yoke. A core holding portion formed of a plurality of grooves formed along the central axis of the core for use;
The X-axis, the Y-axis, and the Z-axis among the Z-axes, which are three-dimensional orthogonal coordinate axes, are formed on both sides of the Y-axis, and the bottom surface of each groove is formed parallel to the XZ plane of the X-axis and the Z-axis. The reference plane of the X axis, and each groove is located outside of the Y axis.
The side wall surface is formed in parallel with the YZ plane of the Y axis and the Z axis to form a reference plane of the Y axis.

[0006] The deflection yoke core of the second invention is :
The outer periphery of the cylindrical deflection yoke core has a neck-side position .
A synthetic resin ring-shaped molding member is fitted and fitted over the entire peripheral surface, and a plurality of grooves formed along the central axis of a cylindrical deflection yoke core are formed on the outer peripheral surface of the molded member. A grip portion of the core is formed, and the groove is formed on both sides of the Y-axis when the central axis is the Z-axis among the X-axis, the Y-axis, and the Z-axis, which are three-dimensional orthogonal coordinate axes, the bottom surface of each groove forms a reference surface of the X-axis and formed in parallel with the XZ plane of the X-axis and Z-axis, also position outside with respect to the Y axis of each groove
At least one of the side wall surfaces to be placed is the YZ of the Y axis and the Z axis.
It is characterized in that it is formed parallel to the surface and forms a reference plane for the Y axis.

[0007]

The same gripping portion formed on the outer peripheral surface of the core is held as a reference point to carry out polishing and dimension checking. As a result, the dimensional accuracy of the core can be improved, and an accurate assembling operation can be performed by holding the same gripping part when assembling the deflection yoke.

[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.

FIG. 1 shows a deflection yoke core according to a first embodiment. The deflection yoke core 1 is formed in a half-split shape as in the conventional example, and is disposed on the outer peripheral end side of the core 1 on the fitting surface (X-axis) side of the half-split cores 1A and 1B as shown in FIG. A total of four fitting grooves 4 are formed for each pair. Also,
A straight portion 5 is formed on the entire outer circumferential surface of the neck side of the core 1, and the straight portion 5 is shown in FIG. A total of four grooves 6 each serving as a pair are provided at symmetrical positions, each groove 6 functioning as a holding portion 10 of such a core. Of the groove wall surface (side wall surface) of the groove 6 as the grip portion 10, the outer surface with respect to the Y axis
The side wall surface D located on the side is a surface parallel to the axis in the vertical direction (Y axis) of the half-shaped cores 1A and 1B, and forms a reference surface of the Y axis, and the bottom surface C of the groove 6 is the Y axis. Are formed in a direction perpendicular to the X-axis (X-axis direction), and constitute a reference plane of the X-axis. As a result, the four D planes are the center axes Z of the deflection yoke core.
The axis is parallel to the axis (the axis in the depth direction of the core), and the four C planes are also parallel to the Z axis.

The neck-side straight end surface G is a surface which is dimensionally stable because it is a surface which is finally formed by pressing with a pressing mold at the time of core molding, and is a flat surface. This straight end face G is perpendicular to the Z axis.

Next, the manufacturing process and operation of this embodiment will be described with reference to FIG.
Explanation will be made based on FIG. First, step 10 in FIG.
As shown in FIG. 1, a core material is molded using a mold. At the time of this molding, as shown in FIG. 5, a total of four grooves 6 as the gripping portions 10 are formed in the straight portion on the neck side of the core, and the molded core is fired in the firing step 102 in FIG. Next, in the half step of the step 103 in FIG. 4, the cores 1A and 1B shown in FIG.
B is temporarily fixed with a tape 3 as shown in FIG.

Next, as shown in FIG.
Are held by holding jigs 8A and 8B, and after the polishing or the like is performed in the core correcting process in step 105 in FIG. 4, the core is removed from the polishing machine. Next, at the time of the dimension check in step 106 in FIG. 4, the gripping portion 10 of the core 1 is again held to measure the shape and dimensions of the core 1. When the shape and dimensions pass, the temporary fixing tape 3 is removed. Next, when assembling the deflection yoke, as shown in FIG. 5, the gripping portion 10 is again held by the holding jigs 8A and 8B in the assembling step of step 107 in FIG. After fitting and integrating the fitting groove 4 of 1B with the spring 2 and adjusting the position of the deflection coil and the core in the Z-axis direction and the rotation direction, the core and the deflection coil are bonded and fixed with an adhesive to deflect. Assemble the yoke. It should be noted that the temporary fixing of the half cores 1A and 1B by the tape 3 is necessary when the steps from core correction in step 105 in FIG. 4 to measurement of the shape and dimension in step 106 in FIG. 4 are automated (mechanized). . Hold jig 8 in process 107
Temporarily fix with tape 3 until holding at A. That is, the half cores 1A and 1B are put into a process as a pair, and integrated with a tape, so that handling of the core by a machine or the like can be facilitated.

According to the first embodiment, since the grip 10 is provided on the outer peripheral surface of the core, when correcting the core or measuring the shape and dimensions, the same grip 10 is held as a reference point for processing. The accuracy can be improved and the shape and dimension can be measured accurately. Also, when assembling the core to the deflection yoke, the assembly can be accurately performed by holding the same gripping portion 10 as a reference point.

Further, since the core gripping portion 10 is provided on the straight portion on the outer peripheral surface of the core, there is an advantage that gripping is easier than when the core gripping portion 10 is provided on the inclined surface of the core.

FIG. 6 shows a deflection yoke core according to a second embodiment. The deflection yoke core 11 has a ring-shaped molded member 7 made of synthetic resin fitted and mounted on the outer peripheral portion of the core 1, in this embodiment, on the neck-side straight surface of the core 1. Is formed.

In the second embodiment, since the core gripping portion 10 is formed on the synthetic resin molded member 7, the same gripping portion can be used for core correction processing, dimension check, and deflection coil assembly work. By holding and holding 10, the same effects as those of the first embodiment such as improvement of dimensional accuracy and accurate assembling work can be obtained. Further, in this embodiment, since the groove 6 is not formed in the core 1, there is no fear that the electric characteristics of the deflection yoke are deteriorated.

Further, since the molded member 7 made of synthetic resin is used, the dimensional accuracy of the gripping portion 10 is improved, so that the accuracy of the reference point of the gripping portion is greatly improved, and the processing accuracy of the core is further improved. The accuracy of the dimensional check and the accuracy of the assembling work can be further improved.

The present invention is not limited to the above embodiment, but can take various embodiments. For example, the first
In the embodiment, the core 1 is divided into the cores 1A and 1B. However, the core 1 may be a cylindrical core instead of the half core.

Further, the neck-side straight edge G in the above embodiment is constituted by a flat surface, but for example, the part as indicated by the dotted line B in FIG. 1 may be a ring-like convex . In this case, the surface of the dotted line B is formed by pressing with a pressing mold at the time of molding the core, so that the surface is perpendicular to the Z axis and flat.

[0020]

[Effects of the Invention] The first invention is that the outer peripheral surface of the core has a neck side.
Since a straight part is formed on the entire peripheral surface of the position and a core gripping part is provided on this straight part, for example,
Therefore, the core can be grasped over the entire outer circumferential surface on the neck side of the core.
When correcting the core and measuring the shape and dimensions of the core , it is sufficient to hold the same gripping portion, and it is possible to improve the processing accuracy and accurately measure the shape and dimension, and Similarly, when assembling to the deflection yoke, it is possible to accurately assemble by holding the same grip portion.

In the second invention, a ring-shaped molded member made of synthetic resin is fitted and mounted on the outer peripheral portion of the core, and a grip portion of the core is formed on the outer peripheral surface of the molded member. The same effect can be obtained. Further, in the second invention, since the groove is not formed directly in the core, there is no concern about deterioration of the electric characteristics of the deflection yoke.

Furthermore, the grooves are grasping portions of the core so formed at both sides of the Y-axis, it can be securely held without rattling core. Furthermore, the bottom surface of the groove formed along the Z-axis direction forms an X-axis reference surface, and the side wall surface located outside the Y-axis of the groove side wall surface forms the Y-axis reference surface. Since the core is held by using the groove and the core is aligned by using the bottom surface and the side wall surface of the groove, the standard of the core in each process of the core adjustment processing, the dimension check, and the assembling is achieved. The position can be unified. Moreover, the bottom surface of the groove, which is the reference surface of the X axis, and the side wall surface of the groove, which is the reference surface of the Y axis, are orthogonal to each other,
Further, since the grooves are formed on both sides of the Y-axis and are held by being restricted by the X-axis reference surface and the Y-axis reference surface of the plurality of grooves, the positioning of the core can be performed accurately and easily. No matter how many times the core is gripped and removed, the core can be gripped using the bottom and side walls of the groove .
As a result, the core can be accurately gripped based on the same reference position and adjusted and dimension can be checked without disturbing the holding jig, etc., resulting in a dramatic improvement in core processing accuracy. Also, the core can be accurately incorporated into the deflection yoke.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a deflection yoke core according to a first embodiment.

FIG. 2 is a sectional view of a fitting groove of a core.

FIG. 3 is a cross-sectional view of a holding portion of the core according to the first embodiment.

FIG. 4 is an explanatory diagram of a manufacturing process of the core of the first embodiment.

FIG. 5 is an explanatory view of a state in which a holding portion of the core is held by a holding jig.

FIG. 6 is an explanatory view of a deflection yoke core according to a second embodiment.

FIG. 7 is an explanatory perspective view of a conventional deflection yoke core.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core 4 Fitting groove 6 Groove as gripping part 7 Molded member made of synthetic resin 8A, 8B Hold jig 10 Holding part 11 Core for second deflection yoke

Claims (2)

(57) [Scope of request for utility model registration] An outer peripheral surface of a cylindrical deflection yoke core has a thread.
A straight portion is formed on the entire peripheral surface at the position on the rack side , and a grip portion for the core comprising a plurality of grooves formed along the central axis of the cylindrical deflection yoke core is formed in the straight portion. The grooves are formed on both sides of the Y-axis when the central axis is the Z-axis among the X-axis, the Y-axis, and the Z-axis, which are three-dimensional orthogonal coordinate axes, and the bottom surface of each groove is the X-axis. And Z
The groove is formed in parallel with the XZ plane of the axis to form a reference plane of the X axis, and the side wall surface of each groove located outside of the Y axis is formed in parallel with the YZ plane of the Y axis and the Z axis. And a deflection yoke core forming a Y-axis reference plane. 2. An outer peripheral portion of a cylindrical deflection yoke core has a thread.
A ring-shaped molded member made of synthetic resin is fitted and fitted over the entire peripheral surface at the position on the side of the housing, and formed along the central axis of a cylindrical deflection yoke core on the outer peripheral surface of this molded member. A core holding portion formed of a plurality of grooves formed is formed, and the grooves are formed such that the central axis is an X-axis, a Y-axis which is a three-dimensional orthogonal coordinate axis, and a Y-axis.
Axis, formed on both sides of the Y-axis when the Z-axis of the Z-axis, the bottom surface of each groove is formed in parallel with the X-axis and the X-Z-plane of the Z-axis to form a reference plane of the X-axis, In addition, the Y axis of each groove
A deflection yoke core, wherein at least one of the side wall surfaces located outside of the core is formed in parallel with the YZ plane of the Y axis and the Z axis to form a reference plane of the Y axis.