JPH05274636A - Electric element and magnetic head and structure for attaching them - Google Patents

Abstract

PURPOSE:To eliminate a useless space and to thin and miniaturize attaching structure at the time of attaching a board by exposing the tip surface of the terminal member of an electric element or a magnetic head to the outside of a housing body while flushing it with the outer surface of a sealing member. CONSTITUTION:When a magnetic core device 15 consisting of a core part 12, a bobbin 13 and a coil 14 is housed in a sealed case 10, the structure of the terminal member consisting of a conductive body pin to be attached to the bobbin 13 is made previously as follows. That is, the member 16 is constituted of the main body part 16a of a prismatic shape and a bent part 16b made to a pin shape thinner than the part 16a and formed integrally on the bobbin side base end part of the main body part 16a, and the bent part 16b is inserted into a fixed hole 13a provided on the bobbin 13 and the member 16 is fixed to the bobbin 13. In such a manner, the base end surface 16c of the main body part 16a is made flush with the opening part 10a of the lower surface side of the case 10 and after the inside of the case 10 is filled with the sealing mem ber 17, the main body part 16a exposing to the opening part 10a is joined to a flexible board 18 connecting to a head driving electric circuit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric element, a magnetic head and a mounting structure for them which can be thinned when mounted on a substrate.

[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 indicates a shield case, and inside the shield case 1, a core portion 2, a bobbin 3 to which the core portion 2 is attached, and a coil 4 wound around the bobbin 3 are provided. The provided magnetic core device 5 is stored. Further, a plurality of terminal pins 6 for input signals, output signals, or ground circuit connections are attached to the bobbin 3, and each terminal pin 6 is provided on the back surface side of the shield case 1 (bottom surface side in FIG. 10). It projects outside from the opening 1a. The tip portion of the core portion 2 (see FIG.
0) is exposed to the outside from a through hole 1b formed in the front surface of the shield case 1 (the upper surface in FIG. 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 curved so as 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 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 for magnetic recording. While performing, the magnetic signal recorded on the magnetic recording medium is read and a signal output is obtained from the output terminal pin 6.

[0004]

When fixing the magnetic head A having the above structure to a substrate 8 such as a flexible substrate, conventionally, a plurality of through holes 8a formed in the substrate 8 are utilized, and the through holes 8a are formed in the through holes 8a. In general, the tip portions of the terminal pins 6 are inserted, and solder 9 is placed on the tip portions of the terminal pins 6 protruding to the back side of the substrate 8 to fix the terminals.
Since the conductor portion 8b for connecting to the electric circuit for driving the magnetic head is formed around the insertion hole 8a, the magnetic head A and the electric circuit for driving the magnetic head 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 front end of the terminal pin 6 is projected on the back side of the substrate 8. However, in devices such as portable small cassette tape recorders, downsizing, weight reduction, and thinning have been promoted, so the shield case 1
There is a problem that the gap provided between the substrate 8 and the substrate 8 or the thickness of the space portion formed by the tip portion of the terminal pin 6 projecting on the back surface of the substrate is wasted space. Further, since the terminal pins 6 are extremely thin, protrude a predetermined length from the sealing member 7, and are provided in close contact with each other, a breakage accident or a short-circuit accident may occur during storage or joining to the substrate 8. There is an easy problem.

The present invention has been made in view of the above circumstances, and is advantageous in thinning and downsizing, and is capable of preventing short-circuiting at the time of mounting on a substrate and improving durability, and an electric element, a magnetic head, and the like. The purpose is to provide a mounting structure.

[0007]

In order to solve the above-mentioned problems, an electric functional element is housed in a hollow housing, and the electric functional element is used for signal input or output. The electrically conductive terminal member is connected, and the electric functional element is sealed by the sealing member filled inside the container, and the terminal member penetrates the sealing member and is exposed to the outside of the container. The terminal member is exposed to the outside of the housing with the tip of the terminal member being substantially flush with the outer surface of the sealing member.

In order to solve the above-mentioned problems, according to a second aspect of the present invention, an electric functional element is housed in a hollow housing, and the electric functional element is a conductive terminal member for signal input or output. Is connected, and the electric functional element is sealed by a sealing member filled inside the housing, the terminal member is exposed to the outside of the housing through the sealing member, the terminal member A structure in which an electric element exposed to the outside of the housing is attached to a substrate such that the tip portion is substantially flush with the outer surface of the sealing member, and a circuit pattern is formed on the tip surface of the sealing member. The electric element is brought into contact with the circuit board, the tip of the terminal member is electrically connected to the circuit pattern of the circuit board, and the electric element is attached in close contact with the circuit board.

In order to solve the above-mentioned problems, a magnetic core device is housed inside a hollow shield case, and a conductive terminal member for signal input or output is provided in the magnetic core device. A magnetic head in which the magnetic core device is sealed by a sealing member filled inside the shield case, and the terminal member is exposed to the outside of the shield case through the sealing member. In addition, the terminal member is exposed to the outside of the housing with its tip end substantially flush with the outer surface of the sealing member.

According to a fourth aspect of the present invention, in order to solve the above-mentioned problems, in the magnetic head according to the third aspect, the terminal member is close to the large diameter portion near the magnetic core device and the outer surface of the sealing member. And a small diameter portion on the side.

According to a fifth aspect of the present invention, in order to solve the above-mentioned problems, 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. Are connected, and the magnetic core device is sealed by a sealing member filled inside the shield case, the terminal member penetrates the sealing member and is exposed to the outside of the shield case, and the terminal member is A structure in which a magnetic head penetrating the sealing member and exposed to the outside of the housing is attached to a substrate, wherein the terminal member has its tip end substantially flush with the outer surface of the housing. Of the terminal member is brought into contact with the substrate on which the circuit pattern is formed, and the leading end of the terminal member is electrically connected to the circuit pattern of the substrate so that the magnetic head is attached to the circuit substrate. Dense Those consisting attached by.

[0012]

According to the structure of the invention described in claim 1 or 3, the terminal member 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 which is conventionally formed between the substrate and the back surface side of the substrate, and it is possible to realize thinning and downsizing when mounting the substrate. Furthermore, as compared with the conventional example in which the terminal member protrudes from the sealing member, the protruding portion hardly occurs, so that the terminal member does not bend or break at the time of connection, and short-circuit accidents and connection failures are prevented. Does not happen.

According to the structure of the invention described in claim 2 or 5, since the electric element or the magnetic head is attached to the substrate in a close contact state, the conventional waste formed between the substrate and the back side of the substrate. Space can be omitted,
It can be made thinner and smaller. Further, since the tip portion of the terminal member and the circuit pattern on the substrate can be connected by a known conductive adhesive or means such as wire bonding, general solder, low temperature solder, etc., they can be easily joined by known joining means.

According to the fourth aspect of the invention, the terminal member is composed of the large diameter portion and the small diameter portion, and the side close to the magnetic cocoa device is the large diameter portion. As a result of being fixed, the terminal member is not bent or broken even if some stress is applied to the terminal member. Also,
When the terminal member is cut from the middle together with the shield case and used with the tip of the terminal member exposed in conformity with the outer surface of the sealing member, if there is a large diameter part supported by the sealing member, the cutting It can withstand the stress of time and does not break or break the terminal member. Further, 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 an embodiment of a magnetic head according to the present invention. In the magnetic head B of FIG. 1, reference numeral 10 indicates 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. A plurality of pin-shaped terminal members 16 for input signals or output signals are attached to the bobbin 13. The terminal member 16 is made of a conductor pin such as metal.

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

The tip of the core portion 12 is exposed to the outside through a through hole 10b formed in the front surface of the shield case 10 (the upper surface in FIG. 1), and a magnetic gap G is formed in the exposed portion. The front surface of the shield case 1 is processed into a curved surface to form a tape sliding surface 10c in order to ensure smooth sliding with 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 is filled up to a portion filling the opening 10a 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 flush with each other.

On the other hand, the opening surface 10a of the shield case 10
A flexible substrate 18 for connecting to a driving electric circuit of the magnetic head B is connected to the outer surface 17a of the sealing member 17. This substrate 18 has a circuit pattern 18 on its front and back surfaces as shown in FIG. 2 for connecting to the electric circuit.
b is formed. The circuit pattern 18b of the substrate 8 is joined to the magnetic head B by joining the circuit pattern 18b to the tip surface of the main body portion 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 project to the back side of the substrate. The 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 shield case 10 is formed to have a height higher than that shown in FIG. 1, and the terminal member 16 is also formed to be longer than that shown in FIG. 1. These are cut from the middle and shown in FIG. It can be a structure. That is, with respect to the magnetic head formed by providing the magnetic core device 15 and the terminal member 16 inside the shield case 10 and sealing with the sealing member 17, the shield case 10, the sealing material 17, and the terminal member 16 are provided on the way. The magnetic head B shown in FIG. 1 can be obtained by cutting.

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

Further, at the time of the processing, the terminal member 16
Since the main body portion 16a has a larger diameter than the conventional one and is covered with the sealing member 17, the terminal member 16 is not broken or damaged by processing stress, and can be broken during storage. There is no bending. Also, the terminal member 1
6 has a sufficient thickness, the substrate 18
It is possible to sufficiently increase the connection area when connecting to the circuit pattern 18b, and to prevent connection failure.
It does not cause an accident with poor conductivity. Further, the terminal member 16
Is almost not exposed to the outside, the terminal member 16 is not bent when it is attached to the substrate 18, and the connection can be made without causing a short-circuit accident and the durability is improved.

FIG. 3 shows the mounting structure of the second embodiment of the magnetic head according to 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 designated by the same reference numerals, and their description will be omitted. The magnetic head C of this example is greatly different from the magnetic head B in that the terminal member 16 'is
The point is that it is composed of a ', the bent portion 16b, and the small diameter portion 16c, and that the back of the shield case 10 is higher than the previous one.

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

The magnetic head C having the structure shown in FIG.
As in the case of the magnetic head A of the conventional example shown in (1), the magnetic head A is mounted on the substrate 8 and soldered to be connected to an electric circuit for use. The substrate 8 can be led out of the shield case 10 'by slightly bending the end portion of the shield case 10'. Further, 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 the position shift of the through hole of the substrate 8, and in this case, the terminal member 16 '. Load on. When the terminal member 16 ′ tries to push away the resin sealing material 17 due to this load, the sealing material 17 is deformed and the terminal member 16 ′ is deformed.
May move, causing play. However, when the main body portion 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 becomes high, so that the load is applied. Even in this case, the terminal member 16 ′ does not move in the sealing member 17, and there is no backlash. Also, the main body 1
A step portion is formed at the boundary between 6a ′ and the small diameter portion 16c, and the sealing member 17 suppresses this step portion, so that the fixing strength is improved. In addition, the body portion 16 of the terminal member 16 '
Since a'is thick, when the end portion of the coil 14 is wound around the main body 16a 'to be connected and fixed, the connecting work and the fixing work can be performed more easily than the conventional thin one.

When the magnetic head C is used as the above-mentioned magnetic head B, the shield case 10 ', the sealing member 17 and the main body portion 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 of this structure is used, it is possible to support two or more types of standards having different shield case heights, and by changing the cutting position (cutoff line), a certain range of 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 it is small, the magnetic head C shown in FIG.
It can be dealt with by cutting along the line. Therefore, when the shield case may be large according to the standard, it is used by connecting to the substrate 8 in the state shown in FIG. 3, and when the shield case is not 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 equipment such as a grinding machine, a polishing machine, a water jet, and a slicer,
Any of an electric discharge machine, a laser machine, a chemical etching machine, etc. may be used. If this is done, the magnetic core device 15 has been conventionally used according to the difference in standards.
Although they themselves were made 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 standard magnetic heads.
Parts can be shared and the manufacturing cost can be reduced.

On the other hand, the filling position of the sealing member 17 is shown in FIG.
Since the sealing member 17 does not need to be cut at a position along the line a or at a position closer to the magnetic core than that, the resistance at the time of cutting can be reduced. When the filling position of the sealing member 7 is set to the position along the line aa in FIG. 3, to attach the substrate 18 to the shield case 10 ′, the substrate 18 as shown by the chain double-dashed line in FIG.
Is bent along the inner edge of the shield case 10 'and guided out along the shield case 1
The substrate 18 can be pulled out to the outside 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 sandwiched between 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 state without bending. This spacer 19
Although it also has a function to reinforce the substrate, a shield effect can also be obtained by further forming this spacer with a magnetic material. Also in this embodiment, the same effect as that of the embodiment of FIG. 3 described above can be obtained.

FIG. 5 shows the mounting structure of the 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 designated by the same reference numerals, and the description of those portions will be omitted. The magnetic head B of this example is greatly different from the magnetic head B in that the sealing member 17 is a shield case 1.
It is that the inside of the opening 10a of the shield case 10 is slightly filled inside the opening 10a of 0, and the main body 16a of the terminal member 16a slightly projects from the outer surface 17b of the sealing member 17. By setting the filling position of the sealing member 17 as described above, a space for accommodating the substrate 8 is opened. In addition, the opening 1 of the shield case 10
A cutout portion 10d for passing the substrate 8 is formed on one side portion (right side portion in FIG. 6) of 0a.

To connect the magnetic head D having the above structure to the substrate 8, a plurality of insertion holes 8a formed in the substrate 8 are used.
It suffices to insert the tips of the respective terminal members 16 into these insertion holes 8a and connect the tips of the terminal members 16 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 also to connect the substrate 8 without bending along the side portion of the shield case 10. can do. When the substrate 8 and the terminal member 16 are connected using solder, the heat of the solder is transferred to the bobbin side via the terminal member 16 and the magnetic core 1
2, the bobbin 13 and the coil 14 may be damaged, but if the connection is made by using a conductive adhesive, heat is not generated and therefore the magnetic core 12, the bobbin 13 and the coil 14 are not damaged by the heat. ..

7 and 8 show examples 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 mounted on a substrate, and FIG. 8 shows an example of a structure in which a housing not cut is mounted on a substrate. First, the structure shown in FIG. 8 before cutting will be described.
Is a transistor element 2 that performs voltage amplification inside a container-like case (housing) 20 made of metal or resin.
1 is inserted and the opening at the bottom of the case 20 is sealed with a sealing member 22 such as resin, and the terminal member 23 connected to the transistor element 21 is the sealing member 22.
The terminal member 22 is penetrated through and protruded to the outside.
The transistor E is fixed to the substrate 24 by inserting the solder 25 into the through hole 4 and placing solder 25 on the inserted portion. Terminal member 23
Is composed of a large-diameter portion 23a near the transistor element 21 and a small-diameter portion 23b penetrating the sealing member 22 and protruding to the outside. Most of the large-diameter portion 23a and 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, there is a gap 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 formed 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.
It 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 tip end surface 23b of the large diameter portion 23a of the terminal member 23 after cutting are substantially flush with each other. Then, as shown in FIG. 7, the tip 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 electrically and mechanically by soldering or adhesion with a conductive adhesive or the like. It is connected. By adopting such an attachment structure, it is possible to realize the problem of thinning in the structure shown in FIG. 8, and it is possible to realize thinning and miniaturization of the device. From the above, if the structure of the transistor E shown in FIG. 8 is adopted, it is possible to comply with both two kinds of standards having different sizes.

FIG. 9 shows another example of connection between the magnetic head according to the present invention and the flexible substrate. This example is an example in which each terminal member 16 is connected to a substrate 30 that is 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 smaller than the intervals between the terminal members 16 ...
Connection is made by wire bonding using the 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 connecting portions 32 of the substrate 30. Also in this case, the substrate 30 is attached to the shield case 1
Since it can be brought into close contact with the back surface of No. 0, the same effect as in the case of the above-described embodiment can be obtained.

By the way, in the above-described embodiments, the example in which the present invention is applied to the magnetic head and the transistor is described. However, in the present invention, various electric functional elements are incorporated in a container, a case, a package or the like. Of course, it can be widely applied to general electric elements having a structure in which a terminal member is provided outside. As such electric elements, FETs, transformers, coils, capacitors, diodes, thermistors,
Varistors, pressure sensors, optical sensors, gas sensors, various I
C, LSI, etc. can be exemplified, but not limited to these.

[0038]

As described above, according to the structure of the invention described in claim 1 or 3, the terminal member 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 it 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 board when connecting to the circuit board. Therefore, it is possible to omit a wasteful space which has conventionally been formed between the electric element or the shield case and the substrate or on the back surface side of the substrate, and it is possible to realize thinning and downsizing when mounting the substrate. Therefore, it is possible to reduce the size and thickness of an electric device equipped with the electric element or the magnetic head according to the present invention. Further, as compared with the conventional example in which the terminal member protrudes from the sealing member, since the protruding portion is hardly generated, short-circuit accidents, connection failure, and insulation failure due to bending of the terminal member or broken contact between the terminal members may occur. Does not happen.

As described above, according to the structure of the invention described in claim 2 or 5, the electric element or the magnetic head is attached to the substrate in a close contact state. The wasteful space that has been formed can be omitted, and thinning and miniaturization can be realized. Therefore, it is possible to reduce the size and thickness of an electric device that employs the mounting structure of the electric element or the magnetic head according to the present invention. Furthermore, since the tip portion of the terminal member and the circuit pattern of the substrate can be connected by a known conductive adhesive or wire bonding, it is possible to easily join them by a known joining means and the terminal member is sealed. Compared with the conventional example which protrudes from the member, since the protruding portion is hardly generated, there is no occurrence of bending accident of the terminal member, short circuit accident due to contact between the terminal members, connection failure, and insulation failure.

As described above, according to the invention of claim 4, since the terminal member is composed of the large diameter portion and the small diameter portion and the side close to the magnetic core device is the large diameter portion, the large diameter portion is sealed. As a result of being securely fixed by the stopper member, the terminal member will not be bent or broken even if some external stress is applied to the terminal member. In addition, when the terminal member is cut along with the shield case from the middle and the end portion of the terminal member is exposed in conformity with the outer surface of the sealing member, there is a large-diameter portion supported by the sealing member. Can withstand the stress at the time of cutting, and does not break or damage the terminal member. Also,
When the terminal cut surface is used as a surface electrode, the electrode area is large and conduction is ensured.

[Brief description of 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 cross-sectional view showing another example of the magnetic head mounting structure of 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.

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

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

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

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.

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 front end surface, 24, 25 substrate,

Claims (5)

[Claims] 1. An electric functional element is housed inside a hollow housing, and a conductive terminal member for signal input or output is connected to the electric functional element and filled inside the housing. An electric element in which an electric functional element is sealed by a sealing member, and the terminal member penetrates the sealing member and is exposed to the outside of the housing, and the terminal member seals the tip portion thereof. An electric element, which is exposed to the outside of the housing so as to be substantially flush with the outer surface of the member. 2. An electric functional element is housed inside a hollow housing, and a conductive terminal member for signal input or output is connected to the electric functional element, and the inside of the housing is filled. The electrical functional 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 end substantially flush with the outer surface of the sealing member. And a structure in which an electric element exposed to the outside of the housing is attached to a substrate, the tip surface of the sealing member is brought into contact with the substrate on which the circuit pattern is formed, and the tip portion of the terminal member is A mounting structure for an electric element, characterized in that the electric element is electrically connected to the circuit pattern of the board and is attached in close contact with the circuit board. 3. A magnetic core device is housed inside a hollow shield case, and a conductive terminal member for signal input or output is connected to the magnetic core device and filled inside the shield case. A magnetic head in which a magnetic core device is sealed by a sealing member, and the terminal member penetrates the sealing member and is exposed to the outside of the shield case, wherein the terminal member seals the tip end portion thereof. A magnetic head characterized in that it is exposed to the outside of the housing substantially flush with the outer surface of the member. 4. The magnetic head according to claim 3, wherein the terminal member includes a large-diameter portion near the magnetic core device and a small-diameter portion near the outer surface of the sealing member. head. 5. A magnetic core device is housed inside a hollow shield case, and a conductive terminal member for signal input or output is connected to the magnetic core device and filled inside the shield case. 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 housing. And a magnetic head mounted on a substrate, wherein the terminal member is exposed to the outside of the housing with its tip portion substantially flush with the outer surface of the sealing member. The magnetic head is attached to the circuit board by bringing the surface into contact with the board on which the circuit pattern is formed and electrically connecting the tip end portion of the terminal member to the circuit pattern of the board. The mounting structure of the head.