JP2925396B2 - Electric element, magnetic head and their mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric element and a magnetic head which can be made thinner at the time of mounting a substrate, and a mounting structure thereof.

[0002]

2. Description of the Related Art FIG. 10 shows an example of a conventional structure of a magnetic head used in an audio tape recorder or the like. In the magnetic head A of FIG. 10, reference numeral 1 denotes a shield case. Inside the shield case 1, a core 2, a bobbin 3 to which the core 2 is attached, and a coil 4 wound around the bobbin 3 are provided. The magnetic core device 5 provided is housed. Further, a plurality of terminal pins 6 for input signal, output signal, ground circuit connection, etc. are attached to the bobbin 3, and each terminal pin 6 is provided on the rear side (the lower side in FIG. 10) of the shield case 1. It protrudes outside from the opening 1a. The tip of the core 2 (FIG. 1)
0) is exposed to the outside through a through-hole 1b formed in the front surface (the upper surface in FIG. 1) of the shield case 1, and a magnetic gap G is formed in the exposed portion of the core portion 2. The front surface of the shield case 1 is formed into a curved surface in order to ensure smooth sliding with the magnetic tape.
The inside of the shield case 1 is filled with a sealing member 7 made of a resin material or the like, and the magnetic core device 5 is fixed.

In the magnetic head A having the above-described structure, a predetermined input signal is applied to the coil 4 from the input terminal pin 6 to generate a magnetic flux gradient outside the magnetic gap G of the core portion 2 to perform magnetic recording. At the same time, a magnetic signal recorded on a magnetic recording medium is read to obtain a signal output from an output terminal pin 6.

[0004]

When the magnetic head A having the above-described structure is fixed to a substrate 8 such as a flexible substrate, conventionally, a plurality of insertion holes 8a formed in the substrate 8 are used, and these insertion holes 8a are inserted into these holes 8a. It is common to insert the tip of each terminal pin 6 and fix the tip of the terminal pin 6 protruding to the back side of the substrate 8 by placing solder 9 on the tip.
Since the conductor 8b for connection to the magnetic head driving electric circuit is formed around the insertion hole 8a, the magnetic head A and the magnetic head driving electric circuit are also connected by the solder 9. It has become.

That is, as shown in FIG. 10, the magnetic head A is fixed on the substrate 8 in parallel with the substrate 8 with a slight gap between the back surface of the shield case 1 and the substrate 8.
The tip of the terminal pin 6 protrudes from the back side of the substrate 8. However, as devices such as portable small cassette tape recorders are being reduced in size, weight, and thickness, the shield case 1 is required.
There is a problem that the space provided between the substrate and the substrate 8 or the thickness of the space formed by the distal end of the terminal pin 6 protruding from the rear surface of the substrate is wasted space. Further, since the terminal pins 6 are extremely thin, protrude from the sealing member 7 by a predetermined length, and are provided in close contact with each other, a breakage accident or a short-circuit accident may be caused during storage or joining to the substrate 8. There is an easy problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an electric element and a magnetic head, which are advantageous for thinning and miniaturization, can prevent a short circuit at the time of mounting a substrate and have improved durability, and their It is intended to provide a mounting structure.

[0007]

According to the first aspect of the present invention, in order to solve the above problems, an electric functional element is housed in a hollow housing, and the electric functional element is used for signal input or output. Are connected, and the electric functional element is sealed by a sealing member filled in the housing, and the terminal member is exposed to the outside of the housing through the sealing member. The terminal element is exposed to the outside of the housing, with the tip end of the terminal member substantially flush with the outer surface of the sealing member.

According to a second aspect of the present invention, in order to solve the above-mentioned problem, an electric functional element is housed in a hollow housing, and the electric functional element has a conductive terminal member for signal input or output. Are connected, the electric functional element is sealed by a sealing member filled in the housing, the terminal member is exposed to the outside of the housing through the sealing member, and the terminal member is A structure in which an electric element exposed to the outside of the housing is attached to a substrate with a front end portion substantially flush with an outer surface of a sealing member, and a substrate having a circuit pattern formed on the front end surface of the terminal member , And the tip of the terminal member is electrically connected to the circuit pattern of the board, and the electric element is attached to the circuit board in close contact.

According to another aspect of the present invention, a magnetic core device is housed in a hollow shield case, and the magnetic core device has a conductive terminal member for signal input or output. Is connected, and the magnetic core device is sealed by a sealing member filled in the inside of the shield case, and the terminal member penetrates the sealing member and is exposed to the outside of the shield case. In addition, the terminal member is exposed to the outside of the shield case with its tip portion substantially flush with the outer surface of the sealing member.

According to a fourth aspect of the present invention, there is provided a magnetic core device in a hollow shield case.
Stored in this magnetic core device for signal input or output
Conductive terminal member is connected to the
The magnetic core device is provided by the sealing member filled inside the base.
The terminal member penetrates the sealing member and is sealed.
Magnetic head exposed to the outside of the
The terminal member has a large-diameter portion near the magnetic core device, a small-diameter portion near the outer surface of the sealing member, and the large-diameter portion.
Ri step portion Tona formed in the boundary portion of the small diameter portion, wherein
The small diameter portion is shall such protrude outside the sealing member.

According to a fifth aspect of the present invention, a magnetic core device is housed inside a hollow shield case, and the magnetic core device has a conductive terminal member for signal input or output. Is connected, the magnetic core device is sealed by a sealing member filled in the inside of the shield case, the terminal member is exposed to the outside of the shield case through the sealing member, and the terminal member is A structure in which a magnetic head, which is exposed to the outside of the shield case through the sealing member, is attached to the substrate, and the terminal member has its tip portion substantially flush with the outer surface of the sealing member.
It is exposed to the outside of the shield case , and the tip surface of the terminal member is brought into contact with the substrate on which the circuit pattern is formed,
The magnetic head is attached to the circuit board by closely connecting the tip of the terminal member to the circuit pattern of the board.

[0012]

According to the structure of the first or third aspect of the present invention, the terminal element of the electric element or the magnetic head is exposed to the outside of the housing with its tip end surface substantially flush with the outer surface of the sealing member. Therefore, at the time of connection with the circuit board, the terminal member can be connected to the electric circuit by bringing the housing or the shield case into close contact with the board. Therefore, it is possible to omit a useless space conventionally formed between the substrate and the rear surface of the substrate, and to achieve a reduction in thickness and size when the substrate is mounted. Furthermore, compared to the conventional example in which the terminal member protrudes from the sealing member, there is almost no projecting portion, so that the terminal member does not bend or break at the time of connection, and a short-circuit accident or poor connection is prevented. Does not occur.

According to the structure of the second or fifth aspect of the present invention, since the electric element or the magnetic head is attached to the substrate in a state of being in close contact with the substrate, the waste conventionally formed between the substrate and the substrate or on the back surface of the substrate. Space can be omitted,
Thin and small size can be realized. Further, since the tip of the terminal member and the circuit pattern of the substrate can be connected by a known conductive adhesive, wire bonding, general soldering, low-temperature soldering, or the like, they can be easily bonded by known bonding means.

According to the invention of claim 4, 6, have a terminal member composed of a large diameter portion and a small diameter portion, there magnetic core device
Has a large-diameter portion on the side close to the electric functional element , so that the large-diameter portion is securely fixed to the sealing member. As a result, even if a slight stress acts on the terminal member, the terminal member is bent or broken. Never. Further, when the terminal member is cut from the middle together with the shield case and used in a state where the distal end portion of the terminal member is exposed according to the outer surface of the sealing member, if there is a large diameter portion supported by the sealing member. Also, it can withstand the stress at the time of cutting, and the terminal member does not break or break. Furthermore,
A large diameter part and a small diameter part are formed on the terminal member to form a step
If this is done, the sealing member suppresses this step,
Increased resistance to pulling out terminal members, increasing fixing strength
The effect is improved. In addition, when the terminal cut surface is used as a surface electrode, the electrode area is large, and conduction is ensured.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a mounting structure of a magnetic head according to an embodiment of the present invention. In the magnetic head B of FIG. 1, reference numeral 10 denotes a shield case. Inside the shield case 10, a core portion 12, a bobbin 13 to which the core portion 12 is attached, and a coil 14 wound around the bobbin 13 are provided. The provided magnetic core device 15 is housed. The bobbin 13 is provided with a plurality of pin-shaped terminal members 16 for input signals or output signals. The terminal member 16 is made of a conductive pin such as a metal.

The terminal member 16 has a prismatic body 16.
a, and a pin shape smaller than the main body 16a.
Folded part 16 integrally formed at the base end on the bobbin side of 6a
The terminal member 16 is fixed to the bobbin 13 by inserting the bent portion 16b into a fixing hole 13a formed in the bobbin 13. The thickness of the bent portion 16b is the same as the bent portion of the terminal member 6 having the conventional structure shown in FIG. 10, but the main body 16a has a larger diameter than the conventional terminal member 6. preferable. In addition, a front end surface (lower end surface in FIG. 1) 16c of the main body 16a of the terminal member 16
Is substantially flush with the opening 10a on the rear side (the lower side in FIG. 1) of the shield case 10.

The tip of the core 12 is exposed to the outside through a through hole 10b formed in the front surface (the upper surface in FIG. 1) of the shield case 10, and a magnetic gap G is formed in the exposed portion. front of the shield case 1 0 is formed tape sliding surface 10c is processed into a curved shape in order to ensure smooth sliding of the magnetic tape. The inside of the shield case 10 is filled with a sealing member 17 made of resin, the magnetic core device 15 and the terminal member 16 are fixed, and the sealing member 17 fills up to a portion filling the opening 10 a of the shield case 10. The outer surface 17a of the sealing member 17 and the opening surface 10a of the shield case 10 are substantially the same.

On the other hand, the opening surface 10a of the shield case 10
A flexible substrate 18 for connecting to an electric circuit for driving the magnetic head B is connected to the outer surface 17 a of the sealing member 17. This substrate 18 has a circuit pattern 18 as shown in FIG.
b is formed. The substrate 8 is connected to the magnetic head B by joining the circuit pattern 18b to the tip end surface of the main body 16a of the terminal member 16 by soldering, bonding with a conductive adhesive, or the like.

As shown in FIG. 1, the magnetic head B and the substrate 18
10 is different from the conventional structure shown in FIG. 10, the gap between the substrate 18 and the magnetic head B is unnecessary, and the terminal member 6 does not protrude on the back side of the substrate. Space can be omitted. That is, it is possible to reduce the thickness and size of the electric device including the magnetic head B.

When manufacturing the magnetic head B having the above structure,
The height of the shield case 10 is made larger than that shown in FIG. 1, and the terminal member 16 is made longer than that shown in FIG. It can be structured. That is, the magnetic core device 15 and the terminal member 16 are provided inside the shield case 10, and the shield case 10, the sealing material 17, and the terminal member 16 are interposed on the magnetic head formed by sealing with the sealing member 17. By cutting, the magnetic head B shown in FIG. 1 can be obtained.

In order to cut the opening surface of the shield case 10 and the outer surface 17a of the sealing member 17 flush with each other, a machining device such as a grinding machine, a polishing machine, a water jet, a slicer, an electric discharge machining device, Either a laser processing device or a chemical etching device may be used.

In the above-mentioned processing, the terminal member 16
Since the main body 16a has a larger diameter than that of the conventional one, and that part is covered with the sealing member 17, the terminal member 16 is not broken or damaged by processing stress, There is no bending. Also, terminal member 1
6 has a sufficient thickness, so that the substrate 18
When connecting to the circuit pattern 18b, the connection area can be made sufficiently large, and no connection failure occurs.
There is no occurrence of poor conductivity. Further, the terminal member 16
Is hardly exposed to the outside, so that when the terminal member 16 is attached to the substrate 18, the terminal member 16 is not bent, the connection can be made without causing a short circuit, and the durability is improved.

FIG. 3 shows a mounting structure of a magnetic head according to a second embodiment of the present invention. In the magnetic head C shown in FIG. 3, the same components as those of the magnetic head B shown in FIG. 1 are denoted by the same reference numerals, and the description of those portions will be omitted. The major difference between the magnetic head C and the magnetic head B in this example is that the terminal member 16 ′ is
a ', the bent portion 16b, and the small diameter portion 16c, and the height of the shield case 10 is higher than that of the previous case.

The main body 16a 'of the terminal member 16'
The magnetic head B of the previous embodiment is formed to be slightly longer than the main body 16a, and has a small-diameter projection 16 at its front end.
c is formed, and the tip of the protruding portion 16c protrudes outward from the opening 10a 'of the shield case 10' by a predetermined length.

The magnetic head C having the structure shown in FIG.
In the same manner as in the case of the magnetic head A of the prior art shown in FIG. The substrate 8 can be led out of the shield case 10 'by slightly bending the end of the shield case 10'. When the small-diameter portion 16c is inserted into the through hole for connection of the substrate 8, the small-diameter portion 16c may be pushed into the through hole of the substrate 8 due to displacement of the through hole of the substrate 8, and in this case, the terminal member 16 ' Load. When the terminal member 16 ′ tries to push the resin sealing material 17 by this load, the sealing material 17 is deformed and the terminal member 16 ′ is deformed.
May move and play may occur. However, if the main body 16a 'of the terminal member 16' is formed thicker than the conventional terminal member 6 shown in FIG. 10, the resistance when the sealing material 17 is deformed is increased, so that the load is applied. In this case, the terminal member 16 ′ does not move in the sealing member 17, and no play occurs. Also, the main body 1
6a 'and the step portion occurs at the boundary portion between the small diameter portion 16c, since the stepped portion sealing member 17 suppresses, pull disconnect
And the fixing strength is improved. Since the main body 16a 'of the terminal member 16' is thick, when connecting and fixing the end of the coil 14 around the main body 16a ', the connecting operation and the fixing operation are easier than the conventional thin one. Can be.

When the magnetic head C is used as the above-described magnetic head B, the shield case 10 ', the sealing member 17, and the main body 16a' of the terminal member 16 are taken along the line aa in FIG. Cut and use. If the magnetic head C is cut along the line aa in FIG. 3, a magnetic head having exactly the same structure as the magnetic head B shown in FIG. 1 can be obtained.

That is, if the magnetic head C having this structure is used, it is possible to cope with two or more types of standards having different heights of the shield case. Can accommodate any length. That is, when the height of the shield case is large, the magnetic head C shown in FIG. 3 is used as it is, and when the height is small, the magnetic head C shown in FIG.
This can be dealt with by cutting along the line. Therefore, in the case where the shield case can be made large according to the standard, the shield case is connected to the substrate 8 in the state shown in FIG. 3, and when the shield case must not be small according to the standard, aa shown in FIG. It is cut along the line and connected to the substrate 18 as shown in FIG. 1 for use.

For cutting the magnetic head C, processing devices such as a grinding machine, a polishing machine, a water jet, a slicer, etc.
Any of an electric discharge machining device, a laser machining device, and a chemical etching device may be used. In this case, conventionally, the magnetic core device 15 may be used in accordance with the difference in the standard.
Although the same itself was manufactured in different sizes, if the structure shown in FIG. 3 is adopted, one type of magnetic core device 15 can support two or more types of magnetic heads,
Parts can be shared, and manufacturing costs can be reduced.

On the other hand, the filling position of the sealing member 17 is changed as shown in FIG.
If the position is along the -a line or a position closer to the magnetic core than the -a line, the sealing member 17 does not need to be cut, so that the cutting resistance can be reduced. When the filling position of the sealing member 7 is set to a position along the line aa in FIG. 3, the substrate 18 is attached to the shield case 10 'as shown by a two-dot chain line in FIG.
Is bent at the inner edge of the shield case 10 ′ and led out along the shield case to obtain the shield case 1.
The substrate 18 can be pulled out of 0 '.

FIG. 4 shows another example of the mounting structure of the magnetic head C shown in FIG. In this example, the substrate 8
A spacer 19 is interposed between the sealing member 17 and the outer surface 17a of the sealing member 17, so that the substrate 8 can be connected to the shield case 10 in a flat shape without bending. This spacer 19
It also has the function of reinforcing the substrate, but by further forming this spacer from a magnetic material, a shielding effect can be achieved. In this embodiment, the same effects as those of the embodiment of FIG. 3 described above can be obtained.

FIG. 5 shows a mounting structure of a third embodiment of the magnetic head according to the present invention. In the magnetic head D shown in FIG. 5, the same components as those of the magnetic head B shown in FIG. 1 are denoted by the same reference numerals, and description of those portions will be omitted. The magnetic head D of this example is significantly different from the magnetic head B in that the sealing member 17
0, the main body 16a of the terminal member 16a is slightly protruded from the outer surface 17b of the sealing member 17, and inside the opening 10a of the shield case 10, By setting the filling position of the sealing member 17 as described above, a space for accommodating the substrate 8 is provided. The opening 1 of the shield case 10
On one side of Oa (the right side in FIG. 6), a notch 10d for passing the substrate 8 is formed.

In order to connect the magnetic head D having the above configuration to the substrate 8, a plurality of insertion holes 8a formed in the substrate 8 are used.
The distal ends of the terminal members 16 may be inserted into these insertion holes 8a, and the distal ends of the terminal members 16 may be connected with solder or a conductive adhesive. By connecting in this way, it is possible to connect them without forming a gap between the substrate 8 and the shield case 10 and connect the substrate 8 without bending the substrate 8 along the side of the shield case 10. can do. When the board 8 and the terminal member 16 are connected by using solder, the heat of the solder is transmitted to the bobbin via the terminal member 16 and the
2 and the bobbin 13 and the coil 14 may be damaged. However, if the connection is made using a conductive adhesive, no heat is generated, so that the magnetic core 12, the bobbin 13 and the coil 14 are not damaged by the heat. .

FIGS. 7 and 8 show an example in which the present invention is applied to a transistor mounting structure. FIG. 7 shows an example of a structure in which a transistor housing is cut and attached to a substrate, and FIG. 8 shows an example of a structure in which an uncut housing is attached to a substrate. First, the structure shown in FIG. 8 before cutting will be described.
Is a transistor element 2 for performing voltage amplification inside a container-like case (housing) 20 made of metal or resin.
1 is inserted, the lower opening of the case 20 is sealed with a sealing member 22 such as a resin, and the terminal member 23 connected to the transistor element 21 is connected to the sealing member 22.
And the terminal member 22 is projected to the outside through the
The transistor E is fixed to the substrate 24 by inserting the solder 25 into the inserted portion. Terminal member 23
Is composed of a large-diameter portion 23a close to the transistor element 21 and a small-diameter portion 23b penetrating the sealing member 22 and protruding to the outside. A large portion of the large-diameter portion 23a and about half of the small-diameter portion 23b are sealed. It is covered and supported by a stop member 22. In the structure shown in FIG. 8, a gap is provided between the substrate 24 and the transistor E, which is disadvantageous in terms of thinning. Therefore, in this case, the structure shown in FIG. 7 is adopted.

The transistor F in the example shown in FIG. 7 is configured by cutting the lower part of the case (housing) 20 shown in FIG. The cutting position is the large diameter portion 23 of the terminal member 23.
This is an intermediate part of a, and is cut including the sealing member 22.
Therefore, the outer surface 22a of the sealing member 22 after cutting and the distal end surface 23b of the large diameter portion 23a of the terminal member 23 after cutting are substantially the same. Then, as shown in FIG. 7, the distal end surface 23c of the large diameter portion 23a of the terminal member 23 is brought into contact with the circuit pattern of the substrate 25, and is electrically and mechanically soldered or bonded by a conductive adhesive or the like. It is connected. By adopting such a mounting structure, it is possible to realize the thinning which is a problem in the structure shown in FIG. 8, and it is possible to realize the thinning and miniaturization of the device. From the above, if the structure of the transistor E shown in FIG. 8 is adopted, any of two types of standards having different sizes can be supported.

FIG. 9 shows another connection example of the magnetic head and the flexible substrate according to the present invention. In this example, each terminal member 16 is connected to a substrate 30 smaller than the area of the back surface of the shield case 10. Since the intervals between the connection portions 32 of the circuit pattern formed on the substrate 30 are all smaller than the intervals between the terminal members 16, in this case,
The connection is made by wire bonding using a wire 34.

By connecting by wire bonding as shown in FIG. 9, the substrate 30 and the terminal member 16 can be freely connected regardless of the size of the connection portions 32 of the substrate 30. Also in this case, the substrate 30 is connected to the shield case 1
0 can be brought into close contact with the back surface, and the same effect as that of the embodiment described above can be obtained.

In the above-described embodiments, examples in which the present invention is applied to a magnetic head and a transistor have been described. However, in the present invention, various electric functional elements are incorporated in a housing such as a container, a case, and a package. Needless to say, the present invention can be widely applied to general electric elements having a structure in which a terminal member is provided outside. FETs, transformers, coils, capacitors, diodes, thermistors,
Varistors, pressure sensors, optical sensors, gas sensors, various I
C, LSI and the like can be exemplified, but not limited to these.

[0038]

As described above, according to the structure of the first or third aspect of the present invention, the terminal element of the electric element or the magnetic head is housed with its tip end substantially flush with the outer surface of the sealing member. Since the terminal member is exposed to the outside of the body, the terminal member can be connected to the electric circuit by bringing the housing or the shield case into close contact with the substrate when connecting to the circuit board. Therefore, useless space conventionally formed between the electric element or the shield case and the substrate or on the back surface side of the substrate can be omitted, and thinning and miniaturization can be realized when the substrate is mounted. Therefore, it is possible to reduce the size and thickness of the electric device on which the electric element or the magnetic head according to the present invention is mounted. Furthermore, as compared with the conventional example in which the terminal member protrudes from the sealing member, there is almost no protruding portion, so that a short-circuit accident, connection failure, or insulation failure due to bending of the terminal member or breakage contact between the terminal members is prevented. Does not occur.

As described above, according to the structure of the second or fifth aspect of the present invention, since the electric element or the magnetic head is mounted in close contact with the substrate, the electric element or the magnetic head is conventionally mounted between the substrate and the back surface of the substrate. The formed useless space can be omitted, and thinning and miniaturization can be realized. Therefore, it is possible to reduce the size and thickness of the electric device employing the mounting structure of the electric element or the magnetic head according to the present invention. Furthermore, since the tip of the terminal member and the circuit pattern of the substrate can be connected by means of a known conductive adhesive or wire bonding, the terminal member can be easily joined by known joining means and the terminal member is sealed. As compared with the conventional example that protrudes from the member, the protruding portion hardly occurs, so that there is no occurrence of bending accident of the terminal member, short-circuit accident due to contact between the terminal members, poor connection, and poor insulation.

As described above, according to the fourth and sixth aspects of the present invention, the terminal member comprises a large diameter portion and a small diameter portion,
Since the large-diameter portion is located closer to the magnetic core device, the large-diameter portion is securely fixed by the sealing member. As a result, even if some external stress acts on the terminal member, the terminal member is bent or broken. Never. Further, when the terminal member is cut from the middle together with the shield case and used in a state where the distal end portion of the terminal member is exposed according to the outer surface of the sealing member, if there is a large diameter portion supported by the sealing member. Also, it can withstand the stress at the time of cutting, and the terminal member does not break or break. In addition, when the terminal cut surface is used as a surface electrode, the electrode area is large, and conduction is ensured. Furthermore, for terminal members
A large diameter part and a small diameter part are formed to form a stepped part
And the sealing member suppresses this step, so that the terminal member
Increases pull-out resistance and improves fixing strength
effective.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a mounting structure of a magnetic head according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the mounting structure shown in FIG.

FIG. 3 is a sectional view showing a mounting structure of a magnetic head according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing another example of the mounting structure of the magnetic head according to the second embodiment of the present invention.

FIG. 5 is a sectional view showing a mounting structure of a magnetic head according to a third embodiment of the present invention.

FIG. 6 is an exploded perspective view of the mounting structure shown in FIG.

FIG. 7 is a side view showing an example of a mounting structure of a transistor according to the present invention.

FIG. 8 is a side view showing another example of the mounting structure of the transistor shown in FIG. 7;

FIG. 9 is a rear view showing another example of the mounting structure of the magnetic head and the substrate.

FIG. 10 is a cross-sectional view showing an example of a conventional magnetic head mounting structure.

FIG. 11 is an exploded perspective view of the mounting structure shown in FIG.

[Explanation of symbols]

 B, C, D magnetic head, 10 shield case, 10a opening, 12 magnetic core, 15 magnetic core device, 16 terminal member, 16a main body, 17 sealing member, 18 substrate, 18a insertion hole, 18b circuit pattern, E , F transistor, 20 case, 22 sealing member, 23 terminal member, 23c tip surface, 24, 25 substrate,

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 5/127-5/17 G11B 5/10-5/115 G11B 5/56-5/60 H05K 1 / 18

Claims (6)

(57) [Claims] An electric functional element is accommodated in a hollow housing, a conductive terminal member for signal input or output is connected to the electric functional element, and the interior of the housing is filled. An electric element in which an electric functional element is sealed by a sealing member, wherein the terminal member penetrates the sealing member and is exposed to the outside of the housing, and the terminal member seals a distal end portion thereof. An electric element, wherein the electric element is exposed to the outside of the housing substantially flush with the outer surface of the member. 2. An electric functional element is accommodated in a hollow housing, a conductive terminal member for signal input or output is connected to the electric functional element, and the interior of the housing is filled. The electric function element is sealed by the sealing member, the terminal member penetrates the sealing member and is exposed to the outside of the housing, and the terminal member has its tip portion substantially flush with the outer surface of the sealing member. The terminal is attached to a substrate on which a circuit pattern is formed, and the distal end of the terminal member is attached to the substrate. An electric element mounting structure characterized in that the electric element is electrically connected to the circuit pattern and is mounted in close contact with the circuit board. 3. A magnetic core device is housed inside a hollow shield case, a conductive terminal member for signal input or output is connected to the magnetic core device, and the inside of the shield case is filled. A magnetic head in which a magnetic core device is sealed by a sealing member, and wherein the terminal member penetrates the sealing member and is exposed to the outside of the shield case, wherein the terminal member seals a front end portion thereof. A magnetic head characterized in that it is substantially flush with the outer surface of the member and is exposed outside the shield case . 4. A magnetic core device is housed inside a hollow shield case, a conductive terminal member for signal input or output is connected to the magnetic core device, and the inside of the shield case is filled. A magnetic head in which a magnetic core device is sealed by a sealing member and the terminal member is exposed to the outside of the shield case through the sealing member, wherein the terminal member is close to the magnetic core device. A large-diameter portion on the side, a small-diameter portion near the outer surface of the sealing member, and a step formed at a boundary portion between the large-diameter portion and the small-diameter portion, and the small-diameter portion protrudes outside the sealing member. A magnetic head, comprising: 5. A magnetic core device is housed inside a hollow shield case, a conductive terminal member for signal input or output is connected to the magnetic core device, and the inside of the shield case is filled. The magnetic core device is sealed by the sealing member, the terminal member penetrates the sealing member and is exposed to the outside of the shield case, and the terminal member penetrates the sealing member and is exposed to the outside of the shield case. Wherein the terminal member is exposed to the outside of the shield case with its tip portion substantially flush with the outer surface of the sealing member. The surface is brought into contact with the substrate on which the circuit pattern is formed, and the tip of the terminal member is electrically connected to the circuit pattern of the substrate, and the magnetic head is mounted in close contact with the circuit substrate. Mounting structure of a magnetic head according to claim. 6. An electric functional element is accommodated in a hollow housing, a conductive terminal member for signal input or output is connected to the electric functional element, and the interior of the housing is filled. An electric element in which an electric function element is sealed by a sealing member, wherein the terminal member is exposed to the outside of the housing through the sealing member, wherein the terminal member is close to the electric function element. The large-diameter portion on the side, the small-diameter portion on the side close to the outer surface of the sealing member, and a step formed at the boundary between the large-diameter portion and the small-diameter portion, wherein the small-diameter portion is outside the sealing member. An electric element characterized by being protruded.