JPH0119325Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coil holder device, and in particular, a pair of coil holder halves having substantially the same shape are each provided with two coil storage portions and a permanent magnet storage portion for applying magnetic bias. The structure consists of a combination of two coil holder halves, so that two coils and one permanent magnet can be stored precisely and easily in a predetermined positional relationship.For example, when attached to the deflection yoke of a picture tube, An object of the present invention is to provide a coil holder device that can be used to improve characteristics.

The present applicant previously proposed a device using a pair of coils and a permanent magnet that applies a magnetic bias to the coils in Japanese Patent Application No. 111650/1983 titled ``Deflection Device for Color Picture Tube.'' This deflection device has the configuration shown in FIGS. 1 to 3. This deflection device 1 is
Pair of saddle-shaped horizontal deflection coils forming the deflection yoke
Among L _H1 , L _H2 and toroidally wound vertical deflection coil L _V , coils 6 ₁₁ and 6 ₁₂ connected in series to one deflection coil L _H1 and given a magnetic bias are connected to one side of the magnetic cores 2 and 2'. A saturable _reactor is attached to the magnetic core surface of
Coils 6 ₂₁ , 6 forming R ₁ and connected in series with another deflection coil L _H2 and given magnetic bias
₂₂ is attached to the magnetic core surface on the other side of the magnetic cores 2 and 2', and a magnetic flux φ _V '' is applied to form a saturable reactor R ₂ , thereby differentially changing the circuit impedance of the horizontal deflection coil. In this way, the aspect of the horizontal deflection magnetic field distribution is changed over time, and the convergence shift is corrected, so that an image with good convergence characteristics can be obtained.

In this deflection device 1, the deflection yoke is a divided magnetic core on which a vertical deflection coil L V is wound from above a separator 2 made of an insulating material such as plastic, in which saddle-shaped horizontal deflection coils L _H1 and _{L H2} are incorporated. 3,
3' are assembled by abutting each other at the dividing surface 4. The magnetic cores 3 and 3' are fixed by a clamp 5, and the magnetic cores 3 and 3' are fixed to the separator 2 with an adhesive 7 such as hot melt. Also, 11
12 is a terminal plate, and 13 is a coil lead wire.

Each of the coils 6 ₁₁ , 6 ₁₂ , 6 ₂₁ , and 6 ₂₂ has a structure in which a permanent magnet 9 that applies a magnetic bias is fixed with an adhesive 14 to a drum core 8 around which a coil connected to a horizontal deflection coil is wound. be. reactor
A pair of coils 6 ₁₁ and 6 ₁₂ constituting R ₁ and a pair of coils 6 ₂₁ and 6 ₂₂ constituting reactor R ₂ are connected using epoxy adhesive 10, respectively, to generate a magnetic flux φ _V that changes with a vertical deflection period. ′, φ _V ″ are adhesively fixed to the surface of the magnetic core which is exposed to the outside.

Here, it is actually very difficult to adhesively fix the coils 6 ₁₁ , 6 ₁₂ , 6 ₂₁ , and 6 ₂₂ while keeping the mutual positional relationship constant, and some positional deviation inevitably occurs, causing the deflection device There was a problem that the quality was unstable due to variations in the quality. Furthermore, there was a problem in that the positional relationship between the drum core and the permanent magnets varied depending on the amount of adhesive used, resulting in variations in the amount of magnetic bias and, as a result, variations in the inductance of the coil. In addition, epoxy adhesives in particular can provide strong adhesive properties, but their toxicity has an spi value of around 2 to 3, which can cause skin damage to workers with allergies, and they are difficult to handle from a health and safety standpoint. There was a problem.

This invention solves the above problems,
An embodiment will be described below with reference to the drawings.

3 to 8 show an embodiment of the coil holder device according to the present invention.

As shown in FIG. 4, the coil holder device 20 includes a coil holder half _21a on the fixed side, and is connected to this by a thin hinge 22, and is connected to the coil holder half _21a by arrows A and A'. It consists of a movable coil holder half body 21b that can be opened and closed in the direction of the coil holder half body _21b , and a plate-shaped mounting arm 35 extending from the coil holder half body _21a . It is a one-piece molded product made of flexible material. When the movable half coil holder _21b is closed and assembled in the direction of arrow A, the hook _23a of the fixed half _21a and the _{hook 23b} of the movable half 21b are engaged. It locks into a peanut shape. Here, the coil holder halves 21 _a and 21 _b
have substantially the same structure, and corresponding parts are denoted by the same reference numerals with suffixes "a" and "b", respectively.

The coil holder half _21a is a pair of semi-cylindrical concave coil storage parts _24a1 , _24a2 , and the other coil holder half _21b is a pair of semi-cylindrical concave coil storage parts 2.
4 _b1 and 24 _b2 are provided adjacent to each other and parallel to each other.

The coil 54 is constructed by winding an electric wire 51 around a drum core 50, as shown in FIG. The drum core 50 has flanges 50 ₁ and 50 ₂ on both end surfaces, and one of the flanges 50 ₁ has a coil lead wire 52.
A groove 53 is formed for passage of.

The coil 54 is pushed into the coil housing portions 24 _a1 and 24 _a2 of the fixed side coil holder half 21 _a as shown by the broken line arrows in FIG. 5, and is stored as shown in FIG. 6. Specifically, the coil 54 is
The flange 50 ₁ on one side is engaged with the arcuate protrusion 25 _a on the holder half body 21 _a side, and the flange 50 ₂ on the other side is engaged on the arcuate protrusion 26 _a , and the stopper protrusions 27 _a1 and 28 _a1
coil storage section 24 _a between 27 _a2 and 28 _a2
1,24 It is stored in _a2 . Each arc ridge 25 _a , 26 _a
The end sides of the holder dividing surface are formed into cut-and-raised portions 25 _a1 , 25 _a2 , 26 _a1 , and 26 _b2 that can be elastically bent.
These cut and raised portions 25 _a1 to 26 _b2 are elastically deformed to absorb dimensional variations in the drum core collar portions 50 ₁ and 50 ₂ , and the coil 54 is normally housed even when there is dimensional variation.

Further, each coil 54 has a drum core flange 50 ₂
The grooves 53 of the arc ridges _26a correspond to the kerfs _26c1 , _26c2 , and the lead wire 52 is housed in the corresponding grooves 53 and kerfs _26c1 , 26c as shown in FIG.
It is drawn out through _c2 .

Further, in the coil holder half _21a , a permanent magnet storage section _31a is provided between and above the coil storage sections _24a1 and _24a2 . The permanent magnet storage portion 31 _a has a stopper protrusion 28 _a1 on the side,
28 _a2 and an opening 30 _a between them, and a claw portion 29 _a is provided on the upper side.

The permanent magnet 55 for applying a magnetic bias to the coil is disk-shaped, and is inserted into the permanent magnet housing 31 _a to its final position as shown by the broken line arrow in FIG. It is stored as shown.

A part of the outer peripheral side of the permanent magnet 55 protrudes from the opening 30 _a , and the left and right sides are provided with stopper protrusions 28 _a1 and 28 _a2.
It is in a state where lateral displacement is restricted by abutting against. Furthermore, the claw portion 29 _a has a shape that can be elastically bent and has an inclined lower surface, and is shaped so that the permanent magnet 5
5 is inserted by forcibly elastically bending the claw portion _29a upward. Therefore, in the thickness direction, the permanent magnet 55 is urged downward by the elastic force of the claw portion _29a , and is pressed against the outer surface of the adjacent collar portion ₅₀₁ . Further, due to the downward force of the permanent magnet 55, the coils 54, 54 are moved to the flanges 50 ₂ , 5, respectively.
0 ₂ comes into contact with the stopper protrusions 27 _a1 and 27 _a2 , and is positioned in the axial direction.

A pair of coils 54, 54 and one permanent magnet 5
5 into the coil holder half _21a , the sixth
As shown in the figure, half of each of the coils 54, 54 and the permanent magnet 55 are buried, and the other half protrudes. In this state, the movable holder half _21b is rotated in the direction of arrow A until the hooks _23a and _23b are engaged and locked. Holder half 2
_1b covers the protruding coils 54, 54 and half of the permanent magnet 55, and places them in the coil storage part 24.
_b1 , 24 _b2 , and into a permanent magnet housing (not shown).

When the holder halves 21 _a and 21 _b are combined, the corresponding coil storage portion 24 _a of each holder half
₁ , 24 _b1 , and 24 _a2 , 24 _b2 cooperate to house the coils 54, 54, and the permanent magnet accommodating part 31 _a of the holder half body 21 _a and the permanent magnet accommodating part 31 _b of the holder half body 21 _b. worked together to house the permanent magnet 55,
The state shown in FIGS. 6 and 7 is reached.

That is, the pair of coils 54, 54 are connected to each collar portion 50.
₁ , 50 ₂ with arcuate protrusions 25 _a , 25 _b , and 2
6 _a and 26 _b , and the outer surface of the flange 50 ₂ is connected to the stopper protrusions 27 _a1 and 27 _a2 on the fixed side holder half body 21 _a side and the stopper on the movable side holder half body 21 _b side. They are locked by the protrusions 27 _b1 and 27 _b2 , are spaced apart from each other by a certain distance, are positioned parallel to each other with high accuracy, and are firmly housed and held without wobbling. Further, each coil 54 has one flange portion 50
It is surrounded by the holder halves 21 _a and 21 _b except for the outer surface of the holder ₁ . Further, the disk-shaped permanent magnet 55 is stopped at four locations on the circumferential surface by stopper protrusions 28 _a1 and 28 _a2 (the other two are not shown), and the semicircular portions are stopped at the adjacent flange portions. 50 ₁ and 50 ₁ . In addition, the permanent magnet 55
are in direct contact with and pressed against the outer surfaces of the adjacent flanges 50 ₁ and 50 ₁ due to the elastic force of the arm-like claws 29 _a and 29 _b , and their height positions are regulated;
Moreover, it is in a state where it does not easily rotate due to frictional force. Further, diametrically opposite portions of the outer circumferential surface of the permanent magnet 55 project outward through the openings 30 _a and 30 _b , respectively, and these projecting portions can be rotated as required. That is, the permanent magnet 55 is
By holding and operating this protrusion, it is possible to forcibly rotate it against frictional force. At this time, the permanent magnet 55 is guided at four locations on the circumferential surface and rotates without shifting back and forth and left and right. Two magnetic poles are provided on a disk as the permanent magnet 55, and by using a permanent magnet that has different magnetization forces on the disk, the inductance can be changed by rotating the permanent magnet and changing the amount of magnetic bias. You can also change the value.

In addition, since the pair of coils 50 are commonly biased by one permanent magnet 55, there is no imbalance in magnetic bias compared to the conventional configuration in which permanent magnets are separately attached to the drum core of each coil. There is no need for the troublesome work of selecting and installing magnets with the same magnetizing force and matching the magnetic bias for each coil.

Furthermore, since the permanent magnet 55 is mounted and fixed without using adhesive and in pressure contact with the outer surface of the collar of the coil, there are problems associated with the mounting method using adhesive, such as positioning and mounting. It is possible to eliminate variations in inductance caused by troublesome work, the distance between the coil and the permanent magnet changing depending on the amount of adhesive, and variations in the amount of magnetic bias. In addition, since the pair of coils 54, 54 are parallel and arranged at the same position in the axial direction, it is possible to stably arrange the single permanent magnet 55 as described above. .

As a result, the coil holder device 20 is in a state where the coils 54, 54 and the permanent magnet 55 are housed and held in the pair of coil holder halves _21a and _21b , as shown in FIGS. 7 and 8.

The mounting arm 35 has a length and width that are inserted into a clamper 62, which will be described later.

FIG. 9 shows the above-mentioned coil 54 and permanent magnet 55.
An example is shown in which the coil holder device 20 housing and holding the coil holder device 20 is used for convergence correction. In the figure, the magnetic cores 60 and 60' of the deflection yoke, which is composed of a pair of saddle-shaped horizontal deflection coils (not shown) and a pair of toroidal-wound vertical deflection coils L _V , are located at the dividing surface 6.
1 and fixed by a clamp 62. As shown in FIG. 10, the coil holder device 20 has a mounting arm 35 attached to a clamp 6.
2 and is attached to the deflection yoke in a positioned state. The mounting arm 35 is in an upwardly warped state, and the coil holder main body that houses the coil and permanent magnet in the coil holder device 20 is caused by the elastic force F generated by the warping of the mounting arm 35 to cause the magnetic core 60 to , 60'. Further, the coil holder main body is attached to the coils 54, 54 at a position where the magnetic flux that changes with the vertical deflection period, which is emitted to the outside from the magnetic cores 60, 60', acts on the coils 54, 54.

As a result, the pair of coils 54, 54 and the one permanent magnet 55 have a constant mutual positional relationship,
It can be easily and reliably attached to the deflection yoke, and moreover, it can be firmly attached to the deflection yoke without rattling.

By connecting the coils 54, 54 in series with the horizontal deflection coil, the circuit impedance of each horizontal deflection coil can be differentially changed in the vertical deflection period, and the aspect of the horizontal deflection magnetic field distribution can be changed over time. A deflection device capable of correcting the convergence deviation by changing the convergence is obtained. In addition, the coils 54, 5
4 is commonly connected to the pair of horizontal deflection coils, the impedance of the circuit consisting of the pair of horizontal deflection coils and the common coil is changed, and the amplitude of the horizontal deflection current is changed with the vertical deflection period, thereby changing the shape of the raster. A trapezoidal deflection device for a picture tube of a television for a projection device is obtained.

Here, the relative positional relationship between the pair of coils 54, 54 and the permanent magnet 55 is constant without variation, so there is no variation in characteristics between the deflection devices, and quality is stabilized. In particular, since the distance between the pair of parallel coils 54, 54 is constant, it is possible to eliminate variations in the current superimposition characteristics of the inductance due to variations in the distance.

FIG. 11 shows another embodiment of the coil holder device according to the present invention. This coil holder device 40
is the coil holder device 2 shown in FIGS. 7 and 8.
It has substantially the same configuration as 0, and has hook claws 41 and 42 on both ends of the bottom surface instead of the mounting arm. A pair of coils 54, 54 and a permanent magnet 55 are housed in the coil holder device 40 in the same manner as in the above case.

As shown in FIG. 12, this coil holder device 40 is fixed vertically on the board 65 by inserting its hook claws 41 and 42 into slits 66 and 67 of a printed wiring board 65 and hooking them therein. be done. This board 65 is a printed circuit board for a horizontal deflection circuit, and the coil holder device 40 is used as a linearity improving device for horizontal deflection current.

Furthermore, the coil holder device of the present invention can be installed in various places in addition to the above-mentioned ones according to various purposes.

Further, it goes without saying that the coil holder device of the present invention can be constructed as a separate body in which the pair of coil holder halves 21 _a and 21 _b are not connected by the hinge 22 .

As described above, the coil holder device according to the present invention has a pair of coil holder halves of approximately the same shape that are connected in a closed state, and two approximately semi-cylindrical concave coil storage portions arranged approximately parallel to each other. and a permanent magnet storage part is provided in the middle of this coil storage part and at a position biased to one side, and the coil storage parts of each coil holder half cooperate to store two coils, and each The permanent magnet storage sections of the coil holder halves work together to store one permanent magnet that applies a common bias to the two coils, so the two coils and one permanent magnet can be The coils are parallel to each other, and one permanent magnet can be fixedly stored and held in a positional relationship that applies a common bias to the two coils. Therefore, just by installing this coil holder device, the two coils can be connected. One permanent magnet can be attached extremely easily to a deflection yoke or printed circuit board, etc. in a predetermined positional relationship, eliminating various inconveniences associated with the use of conventional adhesives, and the two coils are spaced apart. It is possible to eliminate variations in the current superimposition characteristics of the inductance caused by this variation, and the permanent magnet storage part has an elastic arm part that presses the permanent magnet against the end face of the coil in which the permanent magnet is stored. Therefore, the permanent magnet is stored pressed against the end face of the coil, and when the permanent magnet and coil are fixed with adhesive, there is no variation in the amount of magnetic bias due to the amount of adhesive or positional deviation with respect to the coil. This can eliminate variations in coil inductance, and furthermore, since the permanent magnet housing has an opening that allows a part of the outer periphery of the permanent magnet to protrude outside, this protruding part can be used to permanently The magnet can be rotated, and by using a permanent magnet that has varying degrees of magnetization force on the plate surface, it is possible to change the amount of magnetic bias and change the value of inductance. For,
It is possible to easily correct variations in the magnetic properties of each, and furthermore, since the pair of coil holder halves are connected in a hinged manner so that they can be opened and closed, the pair of coil holder halves are separate pieces. Compared to the conventional case, it has the advantage of being easier to handle and manage, and the assembly work for storing the coil and permanent magnet is also easier.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the structure of an example of a deflection device in which a coil to which a magnetic bias is applied is attached in a conventional manner, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a sectional view of the A circuit diagram of the main parts of the deflection device shown in the figure,
FIG. 4 is a perspective view of an embodiment of the coil holder device according to the present invention, with the coil holder half opened;
Fig. 5 is a diagram showing a state in which the coil and permanent magnet are pushed into the coil holder half body, and Fig. 6 is a perspective view showing the state in which the coil and permanent magnet are housed in the coil holder half body. Figure 8 is a perspective view of the coil holder device as seen from the front and back sides, respectively, with the coil and permanent magnet housed and held, and Figures 9 and 10 show the coil holder device of Figure 7 attached to the deflection yoke. FIG. 11 is a perspective view of another embodiment of the coil holder device according to the present invention as seen from the bottom side, and FIG. 12 shows the coil holder device of FIG. 11. FIG. 3 is a sectional view showing an example of use in which the horizontal deflection circuit is attached to a printed circuit board. 20, 40...Coil holder device, 21 _a , 21 _b
...Coil holder half, 22...Hinge, 23 _a , 2
3 _b ...Hook, 24 _a1 , 24 _a2 , 24 _b1 , 24 _b2 ...
Coil storage section, 25 _a , 25 _b , 26 _a , 26 _b ... arcuate protrusion, 27 _a , 28 _a ... stopper protrusion, 29 _a ,
29 _b ...Claw part, 30...Opening, 31...Permanent magnet storage part, 35...Mounting arm, 41, 42...Hook claw, 50...Drum core, 50 ₁ , 50 ₂ ... Flange part, 5
1... Electric wire, 52... Lead wire, 54... Coil, 55
...Permanent magnet, 60,60'...Magnetic core, 61...Divided surface,
62... Clamp, 65... Printed wiring board, 66
...Slit.

Claims (1)

[Claims for Utility Model Registration] (1) Consisting of a pair of coil holder halves of substantially the same shape that are connected in a closed state, each of the pair of coil holder halves being arranged substantially parallel and having a cylindrical shape. two approximately semi-cylindrical concave coil storage parts that store half of the coils; and one permanent magnet storage part that stores one half of one disk-shaped permanent magnet for applying bias, and the corresponding coil storage part and the permanent magnet storage part of the pair of coil holder halves cooperate with each other. A coil holder device configured to house the two coils and the one permanent magnet. (2) Utility model registration request, wherein each of the permanent magnet storage portions of the pair of coil holder halves has an elastic arm portion that presses the stored permanent magnet against the end face of the stored coil. The coil holder device according to item 1. (3) The permanent magnet storage portion of each of the pair of coil holder halves has an opening that allows a part of the outer periphery of the stored permanent magnet to protrude outside. The coil holder device according to item 1. (4) The coil holder device according to claim 1, wherein the pair of coil holder halves have a hinge portion that connects them in an openable and closable manner.