JP2000340426A - Linearity coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a linearity coil structure whose reliability is high against magnetostrictive vibration. SOLUTION: A linearity coil 10 is provided with a resin pedestal 8 on which lead terminals 6 and 7 are arranged, a coil in which a coil 1 is wound around a core 2 of a drum type ferrite core 4, a magnet 5 fixed to a flange 3b of the coil, and a cushion material (buffering material) 9 arranged on the resin pedestal 8. Especially, the whole part of a crossover part 1a of the coil 1 derived from the winding part of the coil to conductive connecting parts 6a and 7a of the lead terminals 6 and 7 is covered with a soft tube 12. Thus, it is possible to prevent the damage or disconnection of the crossover part 1a due to resonance against magnetostrictive vibration at a proximity part S1 with the resin pedestal 8 or a proximity part S2 with the flange 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linearity coil used in a horizontal deflection circuit of various CRT displays such as a color television and a monitor for a computer, and more particularly to a structure relating to magnetostrictive vibration.

[0002]

2. Description of the Related Art A linearity coil is a coil used for correcting a horizontal scanning line in a horizontal deflection circuit of various CRT displays such as a color television and a monitor for a computer, and for example, a magnet attached to a ferrite core (a permanent magnet such as a ferrite magnet). The coil is designed in advance so that the magnetic field of the magnet) affects the core winding core portion so that the inductance of the coil with respect to the DC bias current has a magnetostriction characteristic as shown in FIG.

[0003] The structure of the linearity coil will be described. For example, in a typical linearity coil 90 shown in a partial cross-sectional front view of Fig. 10, a drum-shaped ferrite having flanges 3a and 3b on both sides of a core 2 is provided. A magnet 5 is fixed to one flange 3b of a coil in which the winding 1 is wound around the core 4 with an adhesive or the like, the core axis Z is made vertical, and the resin base 8 on which the lead terminals 6 and 7 are implanted is formed. It has a tall, so-called vertical type coil structure, which is attached with an adhesive via a cushion material (buffer material) 9 such as a sponge.

A structure in which the flanges 3a and 3b at both ends of the core are attached by an adhesive on a magnet 5 directly fixed on a resin base 8 with the core axis Z of the coil being horizontal. There is also a so-called horizontal type linearity coil (not shown).

[0005] In the linearity coil 90 having the basic structure in which the magnet 5 is attached to the drum-shaped ferrite core 4 as described above, strong magnetostrictive vibration is inevitably generated mainly in the core axis Z direction of the coil. When the power is supplied in this state, the linearity coil 90
When the magnetostrictive vibration is transmitted to the substrate and the substrate vibrates, an unpleasant resonance sound (beat noise) is generated. In particular, in a computer monitor, unlike a color television, it is originally in a quiet state of use, so even if the resonance sound is small, it is annoying.

In this respect, the mounting surface of the resin base 8 in the vertical type linearity coil 90 and the magnet 5
The cushioning material 9 interposed therebetween provides an anti-vibration effect to prevent the magnetostrictive vibration of the coil portion of the linearity coil 90 from being transmitted to the resin base 8. Further, in the horizontal type linearity coil mounted on the resin base 8 with the core axis Z of the coil being horizontal, the degree of transmission of the magnetostrictive vibration to the printed circuit board through the resin base 8 is relatively small, and It is superior to the vertical type because it can reduce the influence of the magnetic field, but there is a drawback that the horizontal winding easily loosens the winding portion of the coil when it is horizontal.

The drum-shaped ferrite core 4 used in the linearity coil 90 is an oxide magnetic core such as a nickel-zinc ferrite, and the magnet 5 is a permanent magnet such as a ferrite magnet. The resin base 8 is formed by injection molding of, for example, an epoxy-based synthetic resin material, and the winding 1 is made of an insulated conductor having a diameter of about 0.3 to 0.8 mm (polyurethane, polyamideimide as an insulative covering material). is there. The cushion material 9 has a thickness of 0.2.
It is a so-called sponge-like synthetic resin buffer material of about 1.0 mm.

[0008]

However, in the above-described conventional anti-vibration measures using the cushion material 9 of the linearity coil 90, the magnet 5 fixed to the coil portion and the lower flange 3b is made of resin through the cushion material 9 only. Since the coil portion is placed on the base 8, the coil portion is superimposed on the magnet 5, and the height of the entire portion is unstable. The conductive connection portion 6a which is derived from the winding portion of the winding 1 and vibrates right and left with the lead terminals 6 and 7 of the resin base 8 and
The crossover part 1a reaching 7a resonates, and the crossover part 1a
a near portion S of the ferrite core 4 with the periphery of the flange 3b
2 and a repetitive bending stress (impact) at a starting end S3 from the winding portion of the winding 1 and at a portion S1 close to the resin base 8
However, there is a problem that the wire is continuously damaged and easily broken.

The present invention has been made in view of the above circumstances, and provides a linearity coil having a structure that prevents damage and disconnection of a transition wire portion 1a of a winding due to magnetostrictive vibration of a linearity coil and improves reliability. The purpose is to:

[0010]

According to the present invention, there are provided: (1) a resin base on which lead terminals are provided, a coil having a winding wound around a core of a drum-shaped ferrite core, and fixed to a flange of the core. A linearity coil comprising a magnet, and a flexible tube covering an entire crossover portion of a winding derived from a winding portion of the coil and reaching a conductive connection portion with the lead terminal. The above object is achieved by providing a coil.

(2) A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a lead terminal is arranged with a core axis vertical. In a linearity coil having a structure in which the periphery of the resin base is mounted on a mounting surface surrounded by a side wall via a cushion material, a soft adhesive is provided between the side wall around the mounting surface of the resin base and a flange or a magnet of a core. The above object is attained by providing a linearity coil characterized by being loaded with an agent.

(3) A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a lead terminal is arranged with a core axis vertical. A linearity coil having a structure attached via a cushion material to the resin base while including the entire crossover portion of the winding that extends from the winding portion of the coil and reaches the conductive connection portion of the lead terminal. The above object is achieved by providing a linearity coil in which the outer periphery from the outer peripheral surface of the base to the winding portion of the coil is closely covered with a heat-shrinkable resin tube.

(4) A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a lead terminal is arranged with a core axis vertical. A linearity coil having a structure attached to the lead terminal via a cushion material, a crossover wire portion of a winding which is led out of the coil and reaches a conductive connection portion of the lead terminal, and an outer periphery of the magnet, the cushion material, and the resin base. The above object is achieved by providing a linearity coil characterized in that the parts are fixed with a soft adhesive.

(5) A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a core axis is horizontal and lead terminals are arranged. In the linearity coil having a structure mounted on the resin base, a soft adhesive is used to connect a crossover portion of the winding, which is derived from a winding portion of the coil and reaches a conductive connection portion of the lead terminal, with the resin base. The above object is achieved by providing a linearity coil characterized by being fixed by:

(6) A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a core axis is horizontal and lead terminals are provided. And a cushioning material, and a crossover portion of a winding, which is led out from a winding portion of the coil and reaches a conductive connection portion of the lead terminal, a portion close to the resin base, and the cushioning material. The above object is attained by providing a linearity coil characterized in that a gap between the coils is fixed with a soft adhesive.

(7) A coil formed by winding a coil around a core of a drum-shaped ferrite core is bridged between flanges at both ends of the core on a magnet fixed on a resin base provided with lead terminals. In the linearity coil having a structure in which the core axis is horizontally fixed and adhered, a crossover portion of a winding that is derived from a winding portion of the coil and reaches a conductive connection portion of the lead terminal, and a portion close to the magnet The above object is attained by providing a linearity coil in which a portion near the crossover portion and the resin base is fixed with a soft adhesive.

(8) A coil in which a coil is wound around a core of a drum-shaped ferrite core is fixed on a resin base on which a lead terminal is disposed with a cushion material interposed therebetween. The core axis is horizontally fixed so as to bridge the flange, and the core is horizontally fixed.Furthermore, the vicinity of the crossover portion of the winding and the magnet which is led out from the winding portion of the coil and reaches the conductive connection portion of the lead terminal. The above object is attained by providing a linearity coil characterized in that a portion between the cushion material and a portion close to the resin base is fixed with a soft adhesive.

The "softness" of the flexible tube and the flexible adhesive is, for example, Shore hardness (Shore hardness).
hardness) and has a hardness of Shore A 90 or less.

The above-mentioned "Shore hardness" is also called "repulsion hardness", and a hammer having a substantially spherical diamond attached to its tip is dropped from a certain height so as to hit the sample surface perpendicularly, and the hammer is dropped. Is the hardness obtained by measuring the height of the bouncing again. For example, the bouncing of the hammer when dropped from 10 inches is displayed in proportion to the height of 6.5 inches as 100.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A linearity coil according to the present invention will be described with reference to the drawings.

FIGS. 1 to 8 show claims 1 to 5 of the present invention, respectively.
It is a front view of the linearity coil concerning No. 8. It should be noted that, for the sake of explanation, it is shown in a partial cross section, and the same parts and members as those of the linearity coil 90 of the conventional example are denoted by the same reference numerals.

Referring to FIG. 1, in a linearity coil 10 according to the present invention, a resin base 8 on which lead terminals 6 and 7 are disposed, and a coil in which a winding 1 is wound around a winding core 2 of a drum-shaped ferrite core 4. A magnet 5 fixed to the flange 3b of the core 4 and a cushion material (buffer material) on the resin base 8
9 is the same as that of the conventional linearity coil 90, but in particular, a crossover portion of the winding 1 which is derived from the winding portion of the coil and reaches the conductive connection portions 6a, 7a with the lead terminals 6, 7. It is characterized in that the entirety of 1a is covered with a flexible tube 12.

The flexible tube 12 protects the entire crossover portion 1a of the winding 1 and suppresses the resonance accompanying the magnetostrictive vibration of the coil. In particular, the portion near the crossover portion 1a and the flange 3b of the drum-shaped ferrite core 4 S2 and the portion S1 close to the peripheral surface of the resin base 8 are protected from vibration to prevent the wire from being damaged or broken, and its material is Shore hardness (Shore hardness).
a synthetic resin tube having a hardness of not more than Shore A 90 and a polyolefin resin, for example.

The above-mentioned linearity coil 10 is of a vertical type provided with a cushion material 9, but the entirety of the crossover portion 1a, which is a main part of the present invention, is covered with the soft tube 12. A linearity coil without 9 or a horizontal type linearity coil is similarly effective and within the range of the present invention.

Next, referring to FIG. 2, in the linearity coil 20 according to the present invention, the winding core 2 of the drum-shaped ferrite core 4 is used.
One flange 3b of the core 4 of the coil in which the winding 1 is wound
And a cushion member 9 around a resin base 8 on which lead terminals 6 and 7 are arranged with a core axis Z being vertical and a lead base 6 and 7 disposed on a mounting surface 8b surrounded by a side wall 8a.
In the linearity coil having a structure mounted through the soft base, a soft adhesive 21 is loaded between the magnet 5 and the side wall 8a around the mounting surface 8b of the resin base 8, in particular.

The soft adhesive 21 is, for example, a silicone resin adhesive and has a Shore hardness of 90 or less.

The coil portion fixed on the cushion material 9 by the loading of the soft adhesive 21 is a magnet 5
Is softly held by the side wall 8a surrounding the mounting surface 8b of the resin base 8, so that the resonance of the crossover wire portion 1a of the winding 1 is suppressed. At this time, if the height of the side wall 8a from the mounting surface 8b is further increased, the supporting force of the side surface will be increased. When the magnet 5 is disposed only on the upper flange 3 a of the core 4, the flange 3 b of the core 4 is bonded and fixed on the cushion material 9, and the soft adhesive 21 is attached to the mounting surface of the resin base 8. It will be loaded between the side wall 8a around the periphery 8b and the flange 3b.

Next, in FIG. 3, in the linearity coil 30 according to the present invention, the winding core 2 of the drum-shaped ferrite core 4 is used.
One flange 3b of the core 4 of the coil in which the winding 1 is wound
The structure is such that the magnet 5 is fixed to the resin base 8 and the core axis Z is perpendicular to the resin base 8 on which the lead terminals 6 and 7 are disposed via a cushion material 9. At least the outer periphery from the outer peripheral surface of the resin base 8 to the winding portion of the coil is thermally shrunk while including the entire crossover portion 1a of the winding 1 reaching the conductive connection portions 6a, 7a of the lead terminals 6, 7. Resin tube 3
1 is characterized in that the structure is tightly covered.

The material of the resin tube 31 is, for example, a polyolefin resin or a polyvinyl chloride resin, which has an effect of contracting when heated to softly support and reinforce the coil portion from the side. Therefore, since the magnetostrictive vibration of the coil portion is suppressed, the resonance sound of the printed circuit board is further reduced, and the vibration of the crossover 1a of the winding 1 is also reduced. In addition, as for the way of applying the tube, it is not necessary to cover up to the flange 3a on the upper side of the core as shown in FIG. 3 as long as the entire crossover portion 1a of the winding 1 is covered.

Next, in FIG. 4, in the linearity coil 40 according to the present invention, the winding core 2 of the drum-shaped ferrite core 4 is used.
One flange 3b of the core 4 of the coil in which the winding 1 is wound
A structure in which the magnet 5 is fixed to the base and the core axis Z is perpendicular to the resin base 8 on which the lead terminals 6 and 7 are disposed via a cushion material 9, and particularly, the lead is derived from the coil. A crossover wire portion 1a of a winding reaching the conductive connection portions 6a, 7a of the lead terminals 6, 7, and an outer peripheral portion S4 of the magnet 5, cushion material 9, and resin base 8
Are fixed with a soft adhesive 21. In FIG. 4, a portion S <b> 2 of the bridging portion 1 a of the winding from the winding portion to the start end S <b> 3 from the winding portion and the flange 3 b is also fixed by the soft adhesive 21.

With the above structure, the periphery of the cushion member 9 which is located between the resin base 8 fixed to the printed board and the coil which is the source of the magnetostrictive vibration and is physically weak due to the magnetostrictive vibration is S4. The portion corresponding to S4, which is reinforced by the soft adhesive 21 and is most likely to be damaged or disconnected by resonance of the crossover wire portion 1a of the winding, is fixed. Further, the fixing process of the crossover wire portion 1a of the winding in S2 and S3 with the soft adhesive 21 suppresses the resonance due to the magnetostrictive vibration and contributes to the prevention of the damage at the portion.

Next, referring to FIG. 5, in the linearity coil 50 according to the present invention, the winding core 2 of the drum-shaped ferrite core 4 is used.
Flanges 3a and 3b of the core 4 of the coil having the winding 1 wound therearound
A horizontal type linearity coil having a structure in which a magnet 5 is fixed with an adhesive or the like and a core axis Z is horizontal and the magnet 5 is mounted on a resin base 8 on which lead terminals 6 and 7 are disposed. In particular, the crossover wire portion 1a of the winding that is led out of the winding portion of the coil and reaches the conductive connection portions 6a and 7a of the lead terminals 6 and 7 and the proximity portion S1 between the resin base 8 and It is characterized by a structure fixed by a soft adhesive 21. In FIG. 5, the starting end S <b> 3 from the winding portion of the crossover wire portion 1 a of the winding is also fixed by the soft adhesive 21.

With the above structure, the connecting wire portion 1a is softly fixed without resonating at the portion S1 close to the resin base 8 which is most susceptible to the magnetostrictive vibration of the coil, thereby preventing damage and disconnection. In addition, the linearity coil 50 of FIG.
In this case, the start end S3 of the winding wire 1a from the winding portion is also fixed to suppress resonance.

Next, referring to FIG. 6, in the linearity coil 60 according to the present invention, the winding core 2 of the drum-shaped ferrite core 4 is used.
Flanges 3a and 3b of the core 4 of the coil having the winding 1 wound therearound
(Or only one of them), the magnet 5 is fixed, the core axis Z is horizontal, and the cushion member 9 is mounted on the resin base 8 on which the lead terminals 6 and 7 are arranged. Between the crossover wire portion 1a of the winding that is led out of the portion and reaches the conductive connection portions 6a and 7a of the lead terminals 6 and 7 and the portion S1 close to the resin base 8 and the cushion material 9 It is characterized by a structure fixed with an adhesive 21. In FIG. 6, the starting end S <b> 3 from the winding portion of the crossover wire portion 1 a of the winding is also fixed by the soft adhesive 21.

The structure with the cushion member 9 interposed therebetween not only completely blocks the influence of the magnetostrictive vibration on the resin base 8 but also allows the crossover portion 1a to be fixed to the printed circuit board. And the coil, which is the source of the magnetostrictive vibration, is reinforced by the soft adhesive 21 in S1 at the periphery of the cushion member 9 which is physically weakest under the influence of the magnetostrictive vibration. The portion corresponding to S1 where damage or disconnection due to resonance of the portion 1a is large is fixed. In addition, in the linearity coil 60 of FIG. 6, the start end S3 from the winding portion of the winding wire portion 1a of the winding is also fixed to suppress resonance. As a result, the transition wire portion 1a of the winding is softly fixed at the start end portion S3 and the adjacent portion S1 without resonating with the magnetostrictive vibration of the coil, so that damage and disconnection are prevented, and loosening of the winding is also prevented.

Next, referring to FIG. 7, in the linearity coil 70 according to the present invention, the winding core 2 of the drum-shaped ferrite core 4 is used.
A coil around which the winding 1 is wound is fixed on a resin base 8 on which lead terminals 6 and 7 are provided. A magnet 5 is fixed to a core axis Z so as to bridge the flanges 3a and 3b at both ends of the core. Is a linearity coil with a structure that is fixed horizontally and bonded,
In particular, the transition wire portion 1a of the winding, which is led out from the winding portion of the coil and reaches the conductive connection portions 6a, 7a of the lead terminals 6, 7, the proximity portion S5 to the magnet 5, and the transition wire portion 1a The structure is characterized in that a portion S1 close to the resin base 8 is fixed with a soft adhesive 21. In addition, in FIG. 7, the starting end S <b> 3 from the winding portion in the crossover wire portion 1 a of the winding is also fixed with the soft adhesive 21.

With the above structure, the crossover wire portion 1a of the winding 1
The weakest part S1 with the resin base 8 and the weakest part S5 with the magnet 5 are softly fixed without resonance due to the magnetostrictive vibration of the coil, preventing damage and disconnection, and also preventing loosening of the winding. . In addition, since the start end S3 is also fixed, resonance is further prevented.

Next, referring to FIG. 8, in the linearity coil 80 according to the present invention, the winding core 2 of the drum-shaped ferrite core 4 is used.
A coil 3 is wound around a coil 1. A coil 5 is fixed on a resin base 8 on which lead terminals 6, 7 are disposed with a cushion material 9 interposed therebetween. The core axis Z is made horizontal so as to be adhered and fixed, and further, the transition wire portion 1a of the winding which is led out from the winding portion of the coil and reaches the conductive connection portions 6a, 7a of the lead terminals 6, 7 and the magnet A soft adhesive 21 is provided between a portion S5 adjacent to the resin base 8 and a portion S1 adjacent to the resin base 8 and the cushion material 9.
It is characterized by the structure fixed by. In addition, in FIG. 8, the starting end S <b> 3 from the winding portion of the crossover wire portion 1 a of the winding is also fixed with the soft adhesive 21.

With the structure in which the cushion member 9 is interposed, not only the effect of the magnetostrictive vibration on the resin base 8 can be more completely cut off, but also the crossover wire portion 1a of the winding 1 is most affected by the magnetostrictive vibration of the coil. A portion S1 close to the weak resin base 8 and a portion S5 close to the magnet 5 are softly fixed without resonating, so that damage and disconnection are prevented, and loosening of the winding is also prevented. In addition, since the start end S3 is also fixed, resonance is further prevented.

The above-described linearity coils 10, 20, 30, 40, 50, 60, 70, 80 according to the present invention.
The arrangement of the magnet 5 with respect to the drum-shaped ferrite core 4 is not limited to the above embodiment. For example, in the linearity coils 10, 20, 30, and 40 of the vertical type, the magnet 5 may be provided only on the upper flange 3a or may be provided on both the flanges 3a and 3b. In addition, the horizontal type linearity coils 50, 60, 70, and 80 also have the magnet 5 placed horizontally above the drum-shaped ferrite core 4;
One or more may be provided on the lower side, the side, or the like.

Furthermore, the shape of the hourglass-shaped ferrite core 4 in the linearity coil according to the present invention is circular, polygonal or the like, and is not particularly limited. Further, not only one circuit (one winding) but also multiple circuits such as two circuits, three circuits, and the like may be configured.

[0042]

Since the linearity coil according to the present invention is constructed as described above, the transition wire portion of the winding, which is derived from the winding portion of the coil and reaches the conductive connection portion of the lead terminal, has a resin base. Since it is softly fixed at the contact point where it contacts the flange of the magnet or the core, it does not resonate with the magnetostrictive vibration of the coil, thereby preventing damage and disconnection, and has an excellent effect of improving reliability.

[Brief description of the drawings]

FIG. 1 is a front view of a linearity coil according to claim 1 of the present invention.

FIG. 2 is a front view of a linearity coil according to claim 2 of the present invention.

FIG. 3 is a front view of a linearity coil according to claim 3 of the present invention.

FIG. 4 is a front view of a linearity coil according to claim 4 of the present invention.

FIG. 5 is a front view of a linearity coil according to claim 5 of the present invention.

FIG. 6 is a front view of a linearity coil according to claim 6 of the present invention.

FIG. 7 is a front view of a linearity coil according to claim 7 of the present invention.

FIG. 8 is a front view of a linearity coil according to claim 8 of the present invention.

FIG. 9 is a graph showing an example of a magnetostriction characteristic of a linearity coil.

FIG. 10 is a front view of a conventional linearity coil.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Winding 2 Core 3a, 3b Flange 4 Hour-shaped ferrite core 5 Magnet 6, 7 Lead terminal 6a, 7a Conductive connection part 8 Resin base 9 Cushion material 10, 20, 30, 40, 50, 60, 70, 80 , 9
0 Linearity coil 12 Soft tube 21 Soft adhesive 31 Resin tube Z Core shaft S1 Proximity to resin base S2 Proximity to flange S3 Starting end of winding at winding crossover S4 Cushion material Outer part of S5 Close part with magnet

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Ikeda 6-16-20 Ueno, Taito-ku, Tokyo Taiyo Yuden Co., Ltd. (72) Inventor Mitsuru Ishida 6-16-20 Ueno, Taito-ku, Tokyo Taiyo Yuden Incorporated (72) Inventor Kozo Oketa 6-16-20 Ueno, Taito-ku, Tokyo Taiyo Yuden Incorporated F-term (reference)

Claims (8)

[Claims] 1. A linearity coil comprising: a resin base provided with lead terminals; a coil having a winding wound around a core of a drum-shaped ferrite core; and a magnet fixed to a flange of the core. A linearity coil comprising: a flexible tube covering an entire crossover portion of a winding which is led out of a winding portion and reaches a conductive connection portion with the lead terminal. 2. A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a lead terminal is arranged with a core axis vertical. In a linearity coil having a structure mounted on a mounting surface surrounded by a side wall via a cushion material, a soft adhesive is provided between a side wall around the mounting surface of the resin base and a flange or a magnet of a core. A linearity coil characterized by being loaded with. 3. A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a lead terminal is arranged with a core axis vertical. In the linearity coil having a structure attached above via a cushion material, at least the resin base is included while including the entire crossover portion of the winding that is led out from the winding portion of the coil and reaches the conductive connection portion of the lead terminal. A linearity coil, wherein an outer periphery from an outer peripheral surface of the coil to a winding portion of the coil is closely covered with a heat-shrinkable resin tube. 4. A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a lead terminal is arranged with a core axis vertical. In a linearity coil having a structure mounted thereon with a cushion material interposed therebetween, a crossover wire portion of a winding derived from the coil and reaching a conductive connection portion of the lead terminal, and an outer peripheral portion of the magnet, cushion material, and resin base And a linearity coil fixed with a soft adhesive. 5. A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a lead terminal is arranged with a core axis being horizontal. In the linearity coil having the structure attached above, a soft adhesive is used to connect a crossover portion of the winding, which is derived from the winding portion of the coil and reaches the conductive connection portion of the lead terminal, to the resin base. A linearity coil that is fixed. 6. A resin base in which a magnet is fixed to at least one flange of the core of a coil in which a winding is wound around a core of a drum-shaped ferrite core, and a core axis is horizontal and lead terminals are provided. A cushion material is sandwiched therebetween, and furthermore, a crossover wire portion of a winding which is led out from a winding portion of the coil and reaches a conductive connection portion of the lead terminal, a portion close to the resin base and the cushion material, A linearity coil wherein the space between the coils is fixed with a soft adhesive. 7. A flange formed by winding a coil around a core of a drum-shaped ferrite core on a resin base on which lead terminals are disposed, and bridging flanges at both ends of the core on a magnet. In a linearity coil having a structure in which the core axis is horizontal and bonded and fixed, a crossover portion of a winding that is derived from a winding portion of the coil and reaches a conductive connection portion of the lead terminal,
A linearity coil in which a portion close to the magnet and a portion close to the crossover portion and the resin base are fixed with a soft adhesive. 8. A magnet in which a coil having a winding wound around a core of a drum-shaped ferrite core is fixed on a resin base on which a lead terminal is disposed with a cushion material interposed therebetween, and flanges and flanges at both ends of the core are provided on a magnet. The core axis is horizontally fixed so as to bridge, and adhesively fixed.Furthermore, the crossover part of the winding, which is derived from the winding part of the coil and reaches the conductive connection part of the lead terminal, and the adjacent part of the magnet, A linearity coil wherein a portion close to a resin base and the cushion material are fixed with a soft adhesive.