JPH09161696A - Deflection yoke fastening band, deflection yoke, and cathode ray tube display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To diversify the facing pattern of a screw. SOLUTION: A fastening band 18 has a circumferential part 18a, a pair of projecting pieces 18b projected outward from the both edges of the circumferential part 18a, and a screw 18c fixed so as to pass through holes formed in the projection pieces 18b. When the screw 18c is made almost parallel to the X axis or Y axis of a cathode ray tube, first a pair of engaging holes 18a1 are formed in point symmetry to the intersecting point of the X axis and Y axis in the specified angle position from the X axis or the Y axis, and second a pair of engaging holes 18a2 are formed in point symmetry in the same angle position in the direction opposite to the specified angle position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke fastening band for fixing the deflection yoke to a neck portion of a cathode ray tube (CRT), a deflection yoke having the deflection yoke fastening band, and a deflection yoke. The present invention relates to a cathode ray tube display device.

[0002]

2. Description of the Related Art FIG. 13 is a perspective view showing an example of a conventional deflection yoke. The deflection yoke 1 shown in FIG.
By combining the pair of semi-annular separators 2, one is formed into a large diameter portion 1a and the other is formed into a funnel shape with a small diameter portion 1b. A horizontal deflection coil (not shown) is mounted inside the separator 2, and a vertical deflection coil 3 is mounted outside the separator 2. A core 4 made of ferrite is attached to the outside of the vertical deflection coil 3. Flange 5a, 5b is provided on the small diameter portion 1b side of the separator 2, and the flange 5a, 5b
Various parts are attached to 5b. The deflection yoke 1 is a so-called saddle / saddle type, and is generally configured as described above.

FIG. 14 is a perspective view schematically showing the periphery of the flanges 5a and 5b provided on the side of the small diameter portion 1b of the deflection yoke 1. As shown in FIG. 14, the flanges 5a, 5b
Is a single plate-like flange formed by connecting the separators 2. The flanges 5a and 5b have a Z-axis (CRT).
Three tongue pieces 6a to 6c and 6d to 6f are provided so as to project in the direction of the tube axis). These tongue pieces 6a to 6f are shaped like a cylinder divided into a plurality as a whole. Of these tongue pieces 6a to 6f, protrusions 7a and 7b are provided on the outer peripheral surfaces of the tongue pieces 6b and 6e. Since the protrusion 7a is outside the tongue piece 6b,
In FIG. 14, the protrusion 7a is not visible. This protrusion 7
It is general that a and 7b are provided at an angular position of about 0 to 20 ° from the X axis (horizontal axis of the CRT) and point-symmetric with respect to the intersection of the X axis and the Y axis.

[0004] Such a cylindrical tongue 6a ~
The deflection yoke 1 is provided outside the 6f on a CRT (not shown).
Deflection yoke tightening band 8 for fixing to the neck of the
(Hereinafter, abbreviated as a tightening band 8) is fitted.
FIG. 15 is a perspective view showing the tightening band 8. As shown in FIG. 14 or 15, the tightening band 8 has a circumferential portion 8a.
And projecting pieces 8b projecting from both ends of the circumferential portion 8a,
8b and a screw 8c attached so as to penetrate through the hole formed in the protruding piece 8b. The circumferential portion 8a and the protruding piece 8b are integrally formed. On the circumferential portion 8a of the tightening band 8, two engaging holes 8a1 and 8a1 for engaging with the protrusions 7a and 7b are provided. The two engaging holes 8a1 are fitted with the tightening band 8 on the cylindrical tongues 6a to 6f so that the engaging holes 8a1 have projections 7a and 7a.
The screw 8c is formed so as to be in the position shown in FIG. 14 when the b is engaged.

Among the holes formed in the protruding piece 8b, a screw is cut in a hole on the side opposite to the head 8c1 of the screw 8c, and the screw 8c is screwed into this screw hole. Therefore, by rotating the screw 8c, the inner dimension of the tightening band 8 changes. When the screw 8c is rotated in a direction in which the inner circumferential dimension is reduced with the tightening band 8 fitted in the cylindrical tongues 6a to 6f, the tongues 6a
Since ~ 6f has flexibility, the tongue piece 6 has the circumferential portion 8a.
Tighten the neck of the CRT through a-6f. In this way, the deflection yoke 1 is fixed to the neck portion of the CRT.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As shown in FIG.
The positions of the projections 7a and 7b provided on the tongues 6a to 6f and the engagement hole 8a1 provided in the circumferential portion 8a of the tightening band 8 are such that the screw 8c of the tightening band 8 is parallel to the X axis as an example. Is set. This is because, when the work for attaching the deflection yoke 1 to the CRT is performed as described above, it is easy for a machine or a worker who rotates the screw 8c to perform the work. Therefore, it is desirable that the screw 8c of the tightening band 8 is set to be parallel to the X axis or the Y axis (vertical axis of the CRT). Whether the screw 8c is parallel to the X axis or the Y axis is
It differs depending on the manufacturer that manufactures the cathode ray tube display device in which the deflection yoke 1 is attached to the CRT.

By the way, recently, not only the direction of the screw 8c of the tightening band 8 being parallel to the X-axis or the Y-axis, but also the request that the screw 8c is above the X-axis or the direction of the screw 8c. The head 8c1 is diversified, such as the desire to be on the right or left side.

FIG. 16 shows a mode in which the protrusions 7a and 7b can be taken by the tightening band 8 shown in FIG. 15 at the positions shown in FIG.
It is four patterns shown to (a)-(d). FIG. 16 shows the protrusions 7a and 7b and the tightening band 8 in a simplified manner. In FIG. 16, (a) is the pattern shown in FIG.
(B) is a pattern in which (a) is rotated by 180 ° and attached, and (c) and (d) are patterns in which the fastening band 8 is inverted and attached. 16 (a) to 16 (d), the patterns of (c) and (d) are the X-axis,
Since it is inclined with respect to the Y-axis, (a) and (b)
Only the pattern is valid. As described above, in the conventional deflection yoke 1 including the conventional tightening band 8, only two types of patterns of the direction of the screw 8c can be provided.

Therefore, in order to meet the diversification of the demands of the direction of the screw 8c as described above, the tongues 6a to 6a in which the positions of the projections 7a and 7b are different from each other according to the demands are provided.
It is necessary to prepare a plurality of deflection yokes 1 (separators 2) having 6f and a plurality of tightening bands 8 having different positions of the engaging holes 8a1. Therefore, there is a problem that enormous mold investment and management of many parts are required.

The present invention has been made in view of the above problems, and a deflection yoke fastening band, a deflection yoke, and a cathode ray tube capable of diversifying a pattern of screw directions of the deflection yoke fastening band. An object is to provide a display device.

[0011]

In order to solve the above-mentioned problems of the prior art, the present invention is a deflection yoke tightening band for fixing the deflection yoke to the neck portion of the cathode ray tube. A circumferential portion provided with an engagement hole for engaging with a protrusion provided on the tip portion on the small diameter side, a pair of projecting pieces projecting outward from both ends of the circumferential portion, and the projecting piece In a deflection yoke tightening band including a screw attached so as to penetrate a hole formed in
(1) The screw is the X axis or Y of the cathode ray tube.
When made substantially parallel to the axis, a first pair of engagement holes are provided in the circumferential portion at a predetermined angular position from the X axis or the Y axis in a point symmetrical manner with respect to the intersection of the X axis and the Y axis. And a second pair of engagement holes that are point-symmetrical with respect to the intersection at the same angular position in the opposite direction to the predetermined angular position. (2) When the screw is substantially parallel to the X-axis or the Y-axis of the cathode ray tube, it is point-symmetrical with respect to the intersection at an angle position of about 45 ° from the X-axis and the Y-axis on the circumferential portion. A deflection yoke tightening band having a pair of engaging holes is provided. (3) When the screw is made substantially parallel to the X axis or the Y axis of the cathode ray tube, , About 45 ° from the X and Y axes
And a second pair of engagement holes point-symmetrically with respect to the intersection at an angular position of, and a second pair of engagement holes point-symmetrically with respect to the intersection at an angular position of approximately 45 ° in the opposite direction. A deflection yoke tightening band is provided.

Further, the deflection yoke is mounted on the neck portion of the cathode ray tube and fixed to the neck portion by a deflection yoke fastening band, one of which has a large diameter and the other of which has a small diameter. (4) In a deflection yoke including a separator having a plurality of tongue pieces formed at a tip portion thereof, (4) the tongue piece has an intersection of the X axis and the Y axis at a predetermined angular position from the X axis or the Y axis of the cathode ray tube. Point symmetric with respect to 1
A pair of protrusions are formed, and the deflection yoke tightening band passes through a circumferential portion, a pair of projecting pieces projecting outward from both ends of the circumferential portion, and a hole formed in the projecting piece. And a screw attached so that when the screw is substantially parallel to the X-axis or the Y-axis, the circumferential portion has a predetermined angular position from the X-axis or the Y-axis with respect to the intersection. And a pair of first engaging holes that are point-symmetrical with each other, and a second pair of engaging holes that are point-symmetrical with respect to the intersection at the same angular position opposite to the predetermined angular position. , The pair of protrusions and the first pair of engaging holes or the second pair of
A deflection yoke is provided which is engaged with one of a pair of engagement holes, and (5) the tongue piece is provided at an angular position of about 45 ° from the X axis and the Y axis of the cathode ray tube. A deflection yoke characterized in that a pair of protrusions engaging with engagement holes formed in a deflection yoke fastening band are formed symmetrically with respect to the intersection.

A cathode ray tube display device comprising a cathode ray tube, a deflection yoke mounted on a neck portion of the cathode ray tube, and a deflection yoke fastening band for fixing the deflection yoke to the neck portion, (6) One of the deflection yokes has a large diameter and the other has a small diameter, and a plurality of tongue pieces are formed at the tip end on the small diameter side, and the tongue pieces are provided with a predetermined distance from the X-axis or the Y-axis of the cathode ray tube. X at the angular position of
A pair of protrusions are formed point-symmetrically with respect to the intersection of the axis and the Y-axis, and the deflection yoke tightening band has a circumferential portion and a pair of protrusions projecting outward from both ends of the circumferential portion. A piece and a screw attached so as to penetrate through a hole formed in the protruding piece, and when the screw is substantially parallel to the X-axis or the Y-axis, the X-axis is provided on the circumferential portion. Alternatively, the first pair of engaging holes are symmetrically provided with respect to the intersection at a predetermined angular position from the Y-axis, and the first pair of engagement holes are provided symmetrically with respect to the intersection at the same angular position opposite to the predetermined angular position. A second pair of engagement holes are formed, and the pair of protrusions and the first pair
Of the pair of engaging holes or the second pair of engaging holes, and the deflection yoke is fixed to the neck portion by tightening the circumferential portion with the screw. (7) One of the deflection yokes has a large diameter and the other has a small diameter, and a plurality of tongue pieces are formed at the tip of the small diameter side,
A pair of protrusions are formed on the tongue piece at an angular position of about 45 ° from the X-axis and Y-axis of the cathode ray tube and symmetrically with respect to the intersection of the X-axis and the Y-axis. Includes a circumferential part, a pair of projecting pieces projecting outward from both ends of the circumferential part, and a screw attached so as to penetrate through a hole formed in the projecting piece. Is substantially parallel to the X-axis or the Y-axis, a pair of engagement holes are formed in the circumferential portion at an angular position of about 45 ° from the X-axis and the Y-axis in point symmetry with respect to the intersection. A cathode ray tube, which is formed by engaging the pair of protrusions with the pair of engaging holes, and fixing the deflection yoke to the neck portion by tightening the circumferential portion with the screw. A display device is provided.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A deflection yoke tightening band, a deflection yoke, and a cathode ray tube display device of the present invention will be described below.
This will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing a first embodiment of the deflection yoke tightening band of the present invention, FIG. 2 is a view showing a pattern that can be taken by the first embodiment of the deflection yoke tightening band of the present invention, and FIG. 3 is the present invention. FIG. 4 is a perspective view showing an embodiment of the deflection yoke of FIG. 4, FIG. 4 is a partial perspective view showing an essential portion of the deflection yoke of the present invention shown in FIG. 3, and FIG. 5 is a second embodiment of the deflection yoke tightening band of the present invention. 6 is a partial perspective view showing a main part of a deflection yoke having the deflection yoke fastening band of the present invention shown in FIG. 5 attached thereto, and FIG. 7 shows a deflection yoke fastening band of the second embodiment of the present invention. FIG. 8 shows possible patterns, FIG. 8 is a perspective view showing a third embodiment of the deflection yoke tightening band of the present invention, and FIG. 9 shows a pattern that can be taken by the third embodiment of the deflection yoke tightening band of the present invention. 10 and 11 are views for explaining another embodiment of the deflection yoke tightening band of the present invention. 1
Is a view for explaining another embodiment of the deflection yoke tightening band of the present invention, and FIG. 12 is a plan view showing a cathode ray tube display device of the present invention. In FIG. 3, the same parts as those in FIG. 13 are designated by the same reference numerals.

The inventors of the present invention have devised various forms of the deflection yoke fastening band itself, the deflection yoke itself, and both the deflection yoke fastening band and the deflection yoke to obtain the deflection yoke fastening band. It was found that the pattern of screw orientation can be diversified.

First, a description will be given of a first embodiment of the deflection yoke tightening band of the present invention, focusing on the form of the deflection yoke tightening band. In FIG. 1, the tightening band 18 of the first embodiment has a circumferential portion 18a, projecting pieces 18b and 18b projecting from both ends of the circumferential section 18a, and the projecting piece 18b.
The screw 18c is attached so as to penetrate the hole formed in the. The circumferential portion 18a and the protruding piece 1
It is integrally formed with 8b. This tightening band 18
The circumferential portion 18a of the projection 7 is provided on the tongues 6b and 6e of the conventional deflection yoke 1 as shown in FIGS.
a pair of engaging holes 18a1 and 18a1 for engaging with a and 7b
And a further pair of engaging holes 18a2, 18a2, a total of four engaging holes are formed. The tightening band 18 is made of metal such as stainless steel.

Protrusions 7a, 7 in the conventional deflection yoke 1
Assuming that b is provided at an angular position of 20 ° from the X axis, the two engaging holes 18a1 are located at an angular position of 20 ° from the X axis with respect to the intersection of the X axis and the Y axis, as in FIG. And the other two engagement holes 18a2 are provided at an angular position of 20 ° in the opposite direction from the X axis and symmetrical about the intersection of the X axis and the Y axis. Engagement holes 18a1 and 18a on both sides of the Y axis
The a2 is symmetrical with respect to the Y axis, and the engaging holes 18a1 and 18a2 above and below the X axis are symmetrical with respect to the X axis.

Among the holes formed in the protruding piece 18b, a screw is cut in a hole on the side opposite to the head 18c1 of the screw 18c, and the screw 18c is screwed into this screw hole. Therefore, by rotating the screw 18c, the inner circumferential size of the tightening band 18 changes. With the tightening band 18 fitted in the cylindrical tongues 6a to 6f,
When the screw 18c is rotated in a direction to reduce the inner circumferential dimension, the tongues 6a to 6f have flexibility,
Circumferential portion 18a clamps the neck portion of CRT 50 (shown in FIG. 12) via tongues 6a-6f. In this way, the deflection yoke 1 is, as shown in FIG.
It is fixed to the neck portion of the cathode ray tube display device.

The tightening band 1 of the first embodiment shown in FIG.
The eight possible patterns are eight patterns including the one in which the screw 18c is inclined with respect to the X axis and the Y axis. In the tightening band 18 of the first embodiment, among them, as shown in FIG.
As shown in (a) to (d), the screw 18c can take four patterns that are parallel to the X axis. As a result, the tightening band 18 alone can meet the diversified demands for the vertical position of the screw 18c and the orientation of the head 18c1 of the screw 18c. 2 shows the protrusion 7a,
7b and the tightening band 18 are shown in a simplified manner.

In the above example, the projections 7a and 7b in the deflection yoke 1 shown in FIG. 13 are provided at an angular position of about 20 ° from the X axis, and the screw 18c of the tightening band 18 is parallel to the X axis. It was done. When the protrusions 7a and 7b are provided at an angular position of about 20 ° from the Y axis, the screw 18c of the tightening band 18 is parallel to the Y axis. In this case, in the tightening band 18, the screw 18
There can be four patterns where c is parallel to the Y axis.

Next, an embodiment of the deflection yoke of the present invention will be described, paying attention to the form of the deflection yoke. In FIG. 3, the deflection yoke 10 of the present invention is formed in a funnel shape, for example, by combining a pair of semi-annular separators 2, one of which is a large diameter portion 10a and the other of which is a small diameter portion 10b. The separator 2 is made of resin. A horizontal deflection coil (not shown) is mounted inside the separator 2, and a vertical deflection coil 3 is mounted outside the separator 2. A core 4 made of ferrite is attached to the outside of the vertical deflection coil 3. Separator 2
Flange 5a, 5b is provided on the small diameter portion 1b side, and various parts are attached to the flange 5a, 5b. The deflection yoke 10 is a so-called saddle / saddle type, and is generally configured as described above. The deflection yoke 10 may be a saddle / toroidal type.

FIG. 4 is a perspective view showing in simplified form the periphery of the flanges 5a and 5b provided on the side of the small diameter portion 1b, which is a main portion of the deflection yoke 10 of the present invention. As shown in FIG.
The flanges 5a and 5b are formed into a single plate-like flange by connecting the separator 2 to each other.
Is provided with three tongue pieces 6a to 6c and 6d to 6f so as to project in the Z-axis direction. These tongue pieces 6a to 6f are shaped like a cylinder divided into a plurality as a whole. Of these tongue pieces 6a to 6f,
Protrusions 17a and 17b are provided on the outer peripheral surfaces of the tongue pieces 6c and 6f. The protrusions 17a and 17b are provided at an angular position of about 45 ° from the X axis and the Y axis, and are point-symmetric with respect to the intersection of the X axis and the Y axis. The protrusions 17a and 17b are attached to the tongue piece 6
It may be provided on the outer peripheral surfaces of a and 6d at an angular position of about 45 ° from the X axis and the Y axis and point-symmetric with respect to the intersection of the X axis and the Y axis.

The deflection yoke 10 shown in FIG. 4 corresponds to the second deflection yoke tightening band of the present invention shown in FIG.
This is an example. A second embodiment of the deflection yoke tightening band of the present invention will now be described. In FIG. 5, the tightening band 28 of the second embodiment has a circumferential portion 28a and projecting pieces 28b, 28b projecting from both ends of the circumferential portion 28a.
The screw 28c is attached so as to penetrate through the hole formed in the protruding piece 28b. The circumferential portion 28a and the protruding piece 28b are integrally formed. The deflection yoke 10 is attached to the circumferential portion 28a of the tightening band 28.
Of the tongue pieces 6c, 6f or 6a, 6d from the X-axis and the Y-axis so as to engage with the protrusions 17a, 17b.
A pair of engagement holes 28a1 and 28a1 are provided at an angle position of 5 °. The tightening band 28 is made of metal such as stainless steel.

Among the holes formed in the protruding piece 28b, a screw is cut in the hole on the opposite side of the head 28c1 of the screw 28c, and the screw 28c is screwed into this screw hole. Therefore, by rotating the screw 28c, the inner circumferential size of the tightening band 28 changes. As shown in FIG. 6, when the tightening band 28 is fitted into the cylindrical tongues 6a to 6f, the tongues 6a to 6f can be rotated by rotating the screw 28c in the direction of reducing the inner circumferential dimension. Due to its flexibility, the circumferential portion 28a tightens the neck portion of the CRT 50 via the tongue pieces 6a to 6f. In this way, the deflection yoke 10 is connected to the CRT 5 as shown in FIG.
The cathode ray tube display device is fixed to the neck portion of 0.

When the deflection yoke 10 of the present invention and the tightening band 28 of the second embodiment are combined, as shown in FIG.
As shown in (a) to (d), two patterns in which the screw 28c is parallel to the X axis and the screw 28c is Y
A total of 4 patterns can be taken, 2 patterns that are parallel to the axis. As a result, it is possible to meet the diversification of the requirements for the vertical and horizontal positions of the screw 28c only with the tightening band 28. Incidentally, FIG. 7 shows the protrusions 17a, 17
b and the tightening band 28 are shown in a simplified manner.

Further, a third embodiment of the deflection yoke tightening band of the present invention will be described, focusing on the form of the deflection yoke tightening band. In FIG. 8, the tightening band 38 of the third embodiment has a circumferential portion 38a, projecting pieces 38b and 38b projecting from both ends of the circumferential section 38a, and the projecting piece 38.
The screw 38c is attached so as to penetrate the hole formed in b. The circumferential portion 38a and the protruding piece 38b are integrally formed. This tightening band 3
In the circumferential portion 38a of 8, the projection 17 provided on the tongue pieces 6c, 6f or 6a, 6d of the deflection yoke 10 described above.
a pair of engaging holes 38a1 and 38a for engaging a and 17b
There are a total of four engaging holes formed by a1 and a further pair of engaging holes 38a2, 38a2. The tightening band 38 is
For example, it is made of metal such as stainless steel.

Two engaging holes 3 in this tightening band 38
Similar to the tightening band 28 shown in FIG. 5, 8a1 is provided at an angle position of approximately 45 ° from the X axis and the Y axis, and the other two engaging holes 38a2 are also in the opposite direction from the X axis and the Y axis. It is provided at an angular position of about 45 °. That is, the engaging holes 38a1, 38
a2 is provided at two angular positions of about 45 ° from the X-axis and the Y-axis, symmetrically with respect to the intersection of the X-axis and the Y-axis. The tightening band 28 of the second embodiment and the tightening band 38 of the third embodiment are substantially different in whether or not the engaging holes 38a2 are provided, and the other parts are the same. As shown in FIG. 12, the deflection yoke 10 is fixed to the neck portion of the CRT 50 by a tightening band 38 to form a cathode ray tube display device.

When the above-mentioned deflection yoke 10 and the tightening band 38 of the third embodiment are combined, FIGS. 9 (a) -9 (h) are obtained.
, The screw 38c is parallel to the X axis.
It is possible to take a total of eight patterns, one pattern and four patterns in which the screw 38c is parallel to the Y axis. As a result, the screw 3 is tightened only by the tightening band 38.
It is possible to cope with diversification of the requirements of the vertical and horizontal positions of 8c and the orientation of the head 38c1 of the screw 38c. Note that FIG. 9 simply shows the protrusions 17a and 17b and the tightening band 38. In the tightening band 38 of the third embodiment,
The engaging holes 38a1 and 38a2 have a circumferential portion 38a and a protruding piece 38b.
Since the long plate pieces that form and are formed at substantially equal intervals, rigidity symmetry is obtained, and it is easy to bend into a perfect circle after the hole opening process. It also has advantages.

The tightening band 1 of the first embodiment described above
8, the tightening band 28 of the second embodiment and the tightening band 38 of the third embodiment have the same shape and size of the engaging holes formed in the respective circumferential portions. Protrusion 7 of deflection yoke 1
a, 7b or projections 17a, 17b of the deflection yoke 10
Of the pair of engagement holes used for the engagement of the above, one may have a small diameter and the other may have a large diameter. As an example, the tightening band 38 of the third embodiment will be described. 10, (a) is a perspective view showing a mode in which the engaging holes 38a1 and 38a2 of the tightening band 38 of the third embodiment are made different in size, and (b) is the circumferential portion 3 of FIG.
8a is a plan view showing a developed portion of 8a and a protruding piece 38b. FIG.
Of the pair of engagement holes 38a1 and the pair of engagement holes 38a2, the size of the engagement holes 38a1 and 38a2 on the side closer to the screw 38c is approximately the same as or slightly larger than the protrusions 17a and 17b (small diameter (round hole). ), The size of the engagement holes 38a1 and 38a2 on the side far from the screw 38c is set to a large diameter (oblong hole) such that the protrusions 17a and 17b move in the direction along the circumferential portion 38a. Engagement holes 38a1, 3 on the side closer to the screw 38c
8a2 has a large diameter, and the engagement hole 3 on the side far from the screw 38c
8a1 and 38a2 may have a small diameter.

With this configuration, when the deflection yoke 10 is fixed to the neck portion of the CRT 50 by the tightening band 38, positioning is first performed by the small diameter side engagement holes 38a1 and 38a2, and the large diameter side engagement hole 38a1. , 38a2, it is possible to cope with a change in the inside dimension of the circumferential portion 38a. Since the positioning is performed by the engagement holes 38a1 and 38a2 on the small diameter side, the tightening work of the tightening band 38 becomes extremely easy. In particular, as shown in FIG.
The engaging holes 38a1 and 38a2 on the side closer to c have a smaller diameter in the circumferential direction, and the engaging holes 38a1 and 38a2 on the side farther from the screw 38c.
Is a large diameter in the circumferential direction, the head 38 of the screw 38c
Since the position of c1 is fixed at a substantially constant position, it is not necessary to change the angle of the tightening jig such as a screw driver or to finely adjust the position, so that the work load can be reduced.

Further, the tightening band 18 of the first embodiment, the tightening band 28 of the second embodiment, and the tightening band 3 of the third embodiment.
It is better to set the relationship between the inner diameters of the circumferential portions 18a, 28a, 38a in 8 and the outer diameters of the tips of the small diameter sides 1b, 10b (cylinders formed by the tongues 6a to 6f) as follows. As shown in FIGS. 11A and 11B, with the screws 18c, 28c, and 38c not tightened, the inner diameter of the tightening bands 18, 28, and 38 is φA, and the tongue pieces 6a to 6a.
If it is set to be slightly smaller than the outer diameter φB of the cylinder formed by 6f, the tightening bands 18, 28, 38 can be simply fitted into the cylindrical tongues 6a-6f.
38 is tightly fitted to the cylindrical tongues 6a to 6f and is held without rattling. Therefore, the tightening bands 18, 28, 38
The tightening work of is extremely easy. Since the tongues 6a to 6f have flexibility, the tightening bands 18, 28, 38 can be attached to the tongues 6a to 6f without any difficulty even if φA <φB. It

[0032]

As described in detail above, the deflection yoke tightening band, the deflection yoke, and the cathode ray tube display device of the present invention have the following effects with the following configuration. (1) A first pair of engagement holes, which are point-symmetric with respect to the intersection of the X-axis and the Y-axis at a predetermined angular position from the X-axis or the Y-axis, in the circumferential portion of the deflection yoke tightening band, and When a second pair of engagement holes are formed point-symmetrically at the same angular position in the opposite direction to the predetermined angular position, the screw can take four patterns each parallel to the X axis and the Y axis. . Therefore, it is possible to reduce the die cost, the unit price of parts, and the design man-hours. (2) The X-axis and the Y-axis are provided on the circumference of the deflection yoke tightening band.
When a pair of engagement holes are formed point-symmetrically with respect to the intersection of the X-axis and the Y-axis at an angle position of about 45 ° from the axis, two patterns in which the screw is parallel to the X-axis and the screw in the Y-axis are formed. A total of four patterns can be taken, two patterns that are parallel. In addition to this configuration, if a second pair of engagement holes are formed point-symmetrically at an angular position of approximately 45 ° in the reverse direction, four patterns in which the screws are parallel to the X axis and screws in parallel to the Y axis are formed. It is possible to take a total of 8 patterns of 4 patterns. Therefore, it is possible to reduce the die cost, the unit price of parts, and the design man-hours. (3) When the diameters of the two engaging holes forming a pair are made different in the circumferential direction, or when the inner diameter of the circumferential portion when the screw is not tightened is made smaller than the outer diameter of the tip portion on the small diameter side of the deflection yoke, The operation of tightening the deflection yoke on the CRT by the yoke tightening band becomes extremely easy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a deflection yoke tightening band of the present invention.

FIG. 2 is a diagram showing patterns that can be taken by the first embodiment of the deflection yoke tightening band of the present invention.

FIG. 3 is a perspective view showing an embodiment of a deflection yoke of the present invention.

FIG. 4 is a partial perspective view showing a main part of the deflection yoke of the present invention shown in FIG.

FIG. 5 is a perspective view showing a second embodiment of the deflection yoke tightening band of the present invention.

FIG. 6 is a partial perspective view showing a main part of a deflection yoke to which the deflection yoke fastening band of the invention shown in FIG. 5 is attached.

FIG. 7 is a diagram showing patterns that can be taken by the second embodiment of the deflection yoke tightening band of the present invention.

FIG. 8 is a perspective view showing a third embodiment of the deflection yoke tightening band of the present invention.

FIG. 9 is a view showing patterns that can be taken by the third embodiment of the deflection yoke tightening band of the present invention.

FIG. 10 is a view for explaining another aspect of the deflection yoke tightening band of the present invention.

FIG. 11 is a view for explaining another aspect of the deflection yoke tightening band of the present invention.

FIG. 12 is a plan view showing a cathode ray tube display device of the present invention.

FIG. 13 is a perspective view showing an example of a conventional deflection yoke.

FIG. 14 is a partial perspective view showing a small diameter side tip portion of a conventional deflection yoke.

FIG. 15 is a perspective view showing a conventional deflection yoke tightening band.

FIG. 16 is a view showing patterns that can be taken by a conventional deflection yoke tightening band.

[Explanation of symbols]

 1, 10 Deflection yoke 1a, 10a Large diameter portion 1b, 10b Small diameter portion 2 Separator 3 Vertical deflection coil 4 Core 5a. 5b Flange 6a-6f Tongue 7a. 7b, 17a. 17b Protrusions 18, 28, 38 Deflection yoke tightening bands 18a, 28a, 38a Circumferential portions 18a1, 18a2, 28a1, 38a1, 38a2 Engaging holes 18b, 28b, 38b Projecting pieces 18c, 28c, 38c Screws 18c1, 28c1, 38c1 Head 50 cathode ray tube (CRT)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keiji Morimoto 3-12 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa Prefecture Victor Company of Japan, Ltd.

Claims (10)

[Claims] 1. A deflection yoke tightening band for fixing a deflection yoke to a neck portion of a cathode ray tube, wherein an engagement hole for engaging with a projection provided on a tip portion on the small diameter side of the deflection yoke is provided. And a pair of projecting pieces projecting outward from both ends of the circumferential section, and a screw attached so as to penetrate through a hole formed in the projecting piece. In the attached band, when the screw is substantially parallel to the X-axis or the Y-axis of the cathode ray tube, at the circumferential portion, at a predetermined angular position from the X-axis or the Y-axis, at the intersection of the X-axis and the Y-axis. A first pair of engagement holes are formed symmetrically with respect to the point, and a second pair of engagement holes are formed symmetrically with respect to the intersection at the same angular position in the opposite direction to the predetermined angular position. A deflection yoke tightening band characterized in that 2. A deflection yoke tightening band for fixing the deflection yoke to a neck portion of a cathode ray tube, wherein an engagement hole for engaging with a protrusion provided on a tip portion on the small diameter side of the deflection yoke is provided. And a pair of projecting pieces projecting outward from both ends of the circumferential section, and a screw attached so as to penetrate through a hole formed in the projecting piece. In the attached band, when the screw is made substantially parallel to the X-axis or the Y-axis of the cathode ray tube, approximately 4 from the X-axis and the Y-axis are provided on the circumferential portion.
A deflection yoke tightening band, characterized in that a pair of engagement holes are formed at an angular position of 5 ° symmetrically with respect to the intersection of the X axis and the Y axis. 3. A deflection yoke tightening band for fixing the deflection yoke to a neck portion of a cathode ray tube, wherein an engagement hole for engaging with a projection provided on a tip portion on the small diameter side of the deflection yoke is provided. And a pair of projecting pieces projecting outward from both ends of the circumferential section, and a screw attached so as to penetrate through a hole formed in the projecting piece. In the attached band, when the screw is made substantially parallel to the X-axis or the Y-axis of the cathode ray tube, approximately 4 from the X-axis and the Y-axis are provided on the circumferential portion.
The first pair of engagement holes are arranged at a 5 ° angular position in point symmetry with respect to the intersection of the X-axis and the Y-axis, and the second pair of engagement holes are arranged in a reverse direction at an angle position of approximately 45 ° with respect to the intersection. And a pair of engaging holes for the deflection yoke tightening band. 4. The deflection yoke tightening band according to claim 1, wherein the two engaging holes forming the pair have different diameters in the circumferential direction. 5. The inner diameter of the circumferential portion in a state where the screw is not tightened is smaller than the outer diameter of the tip portion on the small diameter side of the deflection yoke, according to any one of claims 1 to 3. Deflection yoke tightening band. 6. A deflection yoke which is mounted on a neck portion of a cathode ray tube and fixed to the neck portion by a deflection yoke fastening band, one of which has a large diameter and the other of which has a small diameter. In a deflection yoke including a separator having a plurality of tongue pieces formed at a tip portion thereof, the tongue piece has a predetermined angular position from the X-axis or the Y-axis of the cathode ray tube with respect to an intersection of the X-axis and the Y-axis. A pair of protrusions are formed in point symmetry, and the deflection yoke tightening band is formed on a circumferential portion, a pair of projecting pieces projecting outward from both ends of the circumferential portion, and the projecting pieces. A screw attached so as to penetrate through the hole, and the screw is attached to the X-axis or Y-axis.
When substantially parallel to the axis, a first pair of engagement holes are provided in the circumferential portion at a predetermined angular position from the X axis or the Y axis in a point symmetrical manner with respect to the intersection, and the predetermined angle. A second pair of engagement holes are formed point-symmetrically with respect to the intersection at the same angular position in the opposite direction to the position, and the pair of protrusions and the first pair of engagement holes or the pair of engagement holes are formed. A deflection yoke characterized by being engaged with one of a second pair of engagement holes. 7. A deflection yoke which is mounted on a neck portion of a cathode ray tube and fixed to the neck portion by a deflection yoke fastening band, one of which has a large diameter and the other of which has a small diameter. A deflection yoke comprising a separator having a plurality of tongue pieces formed at its tip end, wherein the tongue piece has an angle position of about 45 ° from the X-axis and Y-axis of the cathode ray tube with respect to the intersection of the X-axis and the Y-axis. A pair of protrusions that engage with the engaging holes formed in the deflection yoke tightening band are formed symmetrically with respect to each other. 8. A circumferential part, a pair of projecting pieces projecting outward from both ends of the circumferential part, and a screw attached so as to penetrate through a hole formed in the projecting piece. ,
When the screw is set substantially parallel to the X-axis or Y-axis of the cathode ray tube, a pair of pairs are formed at an angular position of about 45 ° from the X-axis and the Y-axis in a point-symmetric manner with respect to the intersection of the X-axis and the Y-axis. 8. The deflection yoke according to claim 7, wherein a deflection yoke tightening band having an engagement hole is fitted to the tip portion on the small diameter side. 9. A cathode ray tube display device, comprising: a cathode ray tube; a deflection yoke attached to a neck portion of the cathode ray tube; and a deflection yoke fastening band for fixing the deflection yoke to the neck portion. One has a large diameter and the other has a small diameter, and a plurality of tongue pieces are formed at the tip portion on the small diameter side, and the tongue pieces have a predetermined angular position from the X axis or the Y axis of the cathode ray tube. A pair of protrusions are formed point-symmetrically with respect to the intersection of the X-axis and the Y-axis, and the deflection yoke tightening band protrudes outward from a circumferential portion and both ends of the circumferential portion. A pair of projecting pieces and a screw attached so as to penetrate through a hole formed in the projecting piece are provided, and the screw is the X-axis or the Y-axis.
When substantially parallel to the axis, a first pair of engagement holes are provided in the circumferential portion at a predetermined angular position from the X axis or the Y axis in a point symmetrical manner with respect to the intersection, and the predetermined angle. A second pair of engagement holes are formed point-symmetrically with respect to the intersection at the same angular position in the opposite direction to the position, and the pair of protrusions and the first pair of engagement holes or the pair of engagement holes are formed. A cathode ray tube display device, characterized in that one of the second pair of engagement holes is engaged, and the deflection yoke is fixed to the neck portion by tightening the circumferential portion by the screw. 10. A cathode ray tube display device, comprising: a cathode ray tube; a deflection yoke attached to a neck portion of the cathode ray tube; and a deflection yoke fastening band for fixing the deflection yoke to the neck portion. One has a large diameter and the other has a small diameter, and a plurality of tongue pieces are formed at the tip end portion on the small diameter side, and the tongue pieces have a diameter of approximately 45 from the X-axis and Y-axis of the cathode ray tube.
A pair of protrusions are formed at an angular position of ° in a point symmetrical manner with respect to the intersection of the X axis and the Y axis, and the deflection yoke tightening band has a circumferential portion and an outward direction from both ends of the circumferential portion. A pair of projecting pieces and a screw attached so as to penetrate through a hole formed in the projecting piece.
When substantially parallel to the axis, the circumferential portion is point-symmetric about the intersection at an angle position of about 45 ° from the X axis and the Y axis.
A pair of engagement holes are formed, the pair of protrusions are engaged with the pair of engagement holes, and the deflection yoke is fixed to the neck portion by tightening the circumferential portion with the screw. And a cathode ray tube display device.