JP2001160463A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector with a high noise removal efficiency which enables to reduce the number of noise preventing parts arranged for electronic devices as individual parts, with a reduced space and at a low cost. SOLUTION: The middle part 2a of a contact 2 installed in a housing 1 is formed spirally. A magnetic material 3 is inserted in the space of a spirally formed part 2a. The contact 2 is made of ferromagnetic metal. The housing 1 is made of a resin containing magnetic material powder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector used in an electronic device, and more particularly, to a connector having a noise removing function capable of reducing the number of noise suppression parts in the electronic device and saving space.

[0002]

2. Description of the Related Art Conventionally, in order to remove noise generated inside an electronic device, an impedance element, a low-pass filter, and the like are mounted on a printed circuit board in the electronic device. However, it is necessary to secure a space for mounting these noise suppression components, so that the board size must be increased. Also, many of these noise suppression components are mounted near connectors for external connection and the like, which also causes an increase in the mounting space of the board.

In order to solve such a problem, Japanese Utility Model Publication No. Hei 4-18229 discloses a structure in which a ferrite core is embedded in a connector and a cable is passed through the ferrite core.

[0004]

However, in the connector disclosed in Japanese Utility Model Publication No. 4-18229, since a signal line is merely passed through a ferrite core, it is difficult to realize a high impedance, and the noise removal effect is reduced. There was a problem that it was weak.

In view of the above problems, the present invention has a high noise removing effect, can reduce the number of noise suppression components mounted as individual components in an electronic device, and can achieve space saving and cost reduction. The purpose is to provide.

[0006]

According to the first aspect of the present invention, there is provided a connector comprising:
The intermediate portion of the contact provided in the housing is formed in a spiral shape, and a magnetic material is inserted into the spiral formed portion.

As described above, by forming the contact spirally and inserting the magnetic material therein, a high inductance can be obtained and a high noise removing effect can be obtained. Also,
By changing the structure of the contact itself, a noise removing effect can be obtained, so that space can be saved and the cost can be reduced.

According to a second aspect of the present invention, in the first aspect, the contact is made of a metal ferromagnetic material.

As described above, by using a metal ferromagnetic material capable of obtaining a high relative magnetic permeability as a contact, a high inductance value can be provided and a noise removing effect is enhanced.

[0010] The connector according to claim 3 is the connector according to claim 1 or 2.
Wherein the housing is formed of a resin molded body mixed with a magnetic material powder.

As described above, by using the resin molded body containing the magnetic material powder in the housing, the periphery of the contact becomes a structure surrounded by the magnetic material, which is compared with the case where the magnetic material is simply inserted into the contact. As a result, the inductance value increases, and the noise removing effect increases.

The connector of claim 4 is the connector of claim 1 or 2
, Wherein a plurality of the contacts are provided, and a magnetic material is provided at a location between the contacts in the housing.

As described above, by providing the magnetic material also between the contacts in the housing, a structure in which the magnetic material is provided on the sides of the contacts is also provided, as compared with a case where the magnetic material is simply inserted into the contacts. The inductance value increases, and the noise removing effect increases.

According to a fifth aspect of the present invention, there is provided the connector of the first or second aspect.
Wherein a recess surrounding the contact is provided in the housing in the axial direction of the contact, and a cylindrical magnetic material is inserted into the recess.

As described above, by disposing the cylindrical magnetic material around the contact in the housing, the structure around the contact is also surrounded by the magnetic material, and the magnetic material is simply inserted into the contact. The inductance value is increased as compared with the case where the noise reduction is performed, and the noise removing effect is enhanced. Further, by forming a concave portion in the housing and fitting the cylindrical magnetic material into the concave portion, mounting of the magnetic material becomes easy.

According to a sixth aspect of the present invention, at least an intermediate portion of the contact is formed in a cylindrical shape, and a magnetic material is inserted into the cylindrical portion.

If it is difficult to form the spirally wound portion due to the strength of the contact, the contact is made cylindrical and a magnetic material is inserted therein, thereby obtaining a high inductance value while being small. Can be

According to a seventh aspect of the present invention, there is provided the connector, further comprising a cover for covering the housing provided with the contacts, wherein a resin mixed with a magnetic material powder is filled and molded between the cover and the housing.

As described above, by filling and molding the resin mixed with the magnetic material powder around the contact, a high inductance can be obtained and a high noise removing effect can be obtained. Further, since the noise removing effect can be obtained without changing the structure of the contact itself, space can be saved and the cost can be reduced.

The connector of claim 8 is the connector of claim 3 or 7.
In the above, the resin in which the magnetic material powder is mixed is a powder of a crushed powder of Ni—Zn based ferrite having a relative magnetic permeability of 100 or more.
It is characterized by being composed of a mixture of about 90 wt%.

As described above, if the housing is formed of a resin molded body mixed with Ni-Zn ferrite powder, loss in a high frequency region can be increased and unnecessary high frequency noise can be removed. Ferrite mixing ratio is 5
If the amount is less than 0 wt%, the magnetic characteristics are significantly deteriorated, so that desired characteristics cannot be obtained. On the other hand, if the mixing ratio exceeds 90 wt%, the fluidity of the resin is remarkably deteriorated, and the dimensional accuracy at the time of molding such as injection molding is deteriorated, so that handling becomes difficult. Further, Ni having a relative magnetic permeability of less than 100
With -Zn ferrite, the desired characteristics cannot be obtained because the magnetic characteristics deteriorate. In addition, since the Mn-Zn ferrite has a low electric resistance, when mixed in a resin, there is a problem of insulation, so that characteristics in a high frequency region cannot be obtained.
Not suitable for connector applications.

[0022]

FIG. 1A is a perspective view showing an embodiment of a connector according to the present invention, and FIG. 1B is a sectional view thereof. In these figures, 1 is a resin housing of the connector, and 2 is a contact. Contact 2 is shown in FIG.
As shown in FIG. 1B, the intermediate portion 2a is formed in a spiral shape, and the magnetic material 3 shown in FIG.
It is inserted as shown in FIG. As the magnetic material 3, a columnar or prismatic Ni—Zn-based sintered ferrite as shown is used. When Mn-Zn ferrite is used, since the ferrite has higher electrical conductivity than Ni-Zn ferrite, it is preferable to insulate the surface of the core with, for example, a resin coating.

The tip of the contact 2 has a joint 2b (see FIG. 2 (D)) for contacting another connector, and the other end has a joint as shown in FIGS. 1 (B) and 2 (E). Is provided with a cable connecting portion 2c to which the cable 4 is connected by soldering or caulking. As shown in FIG. 2C, in order to fix the magnetic material 3 inside the contact 2, it is desirable to insert the magnetic material 3 into the intermediate portion 2 a and then mold with the resin 5.

As shown in FIG. 1B, the contact 2 is attached to the housing 1 by inserting the contact 2 into the contact insertion hole 1a of the housing 1 from the right side in the drawing from the joint 2b side.
b into the hole 1b in the housing 1, and insert the intermediate portion 2a into which the magnetic material 3 is inserted into the contact insertion hole 1a of the housing 1 so that the projection 2 formed on the contact 2
d is locked by a locking portion 1c provided on the housing 1 to prevent the intermediate portion 2b from coming off, and the intermediate portion 2b is fixed by being brought into contact with a receiving portion 1d of the housing 1.

FIG. 3A shows the impedance characteristics of the contact according to the present invention manufactured as described above, and shows the relationship between the magnetic material 3 and a conventional Ni--Zn sintered ferrite having a relative magnetic permeability of about 2000. It is shown in comparison with the contact. FIG.
As can be seen from the drawings, the provision of the magnetic material 3 in the contact 2 as in the present invention makes it possible to achieve a 1 GHz
It has high impedance up to a high frequency region exceeding z.

Next, the impedance characteristic when the magnetic material powder is mixed into the housing 1 will be described. The housing 1 has a relative magnetic permeability of about 800 and an average particle size of about 100 μm.
About 80 wt% of the crushed powder of Ni-Zn ferrite in polyphenylene sulfide (PPS) resin, and the mixture was formed by injection molding.

FIG. 3 (B) shows a case where a housing made of a resin mixed with a magnetic material powder is used, and the Ni—Zn sintered ferrite core is used as a magnetic material 3 to be inserted into a contact 2. Case, using a resin housing without mixing the magnetic material powder, and using the contact 2 with the magnetic material 3 made of a ferrite core shown in FIG. 2, and using a resin housing without mixing the magnetic material powder,
In addition, each impedance characteristic when a conventional contact is used is shown in comparison.

The contact 2 is made of Ni--Zn as the magnetic material 3.
In general, when a sintered ferrite is inserted, it is difficult to increase the impedance in a higher frequency range because the magnetic properties generally decrease as the frequency increases. However, as can be seen from FIG. 3 (B), mixing crushed ferrite powder into the housing 1 cannot expect a significant effect of increasing the relative magnetic permeability, but does not lower the magnetic characteristics up to higher frequencies. It can be seen that it can be raised. That is, Ni-Zn sintered ferrite 3 is inserted into the spirally wound contact 2 in the low frequency region, and crushed powder of the sintered ferrite is mixed as the housing 1 supporting the contact 2 in the high frequency region. It can be seen that by forming a magnetic material powder such as a material with a resin, it is possible to realize a high impedance in a very wide band from a low frequency to a high frequency.

Next, a description will be given of the results of studies on the amount of ferrite mixed in the housing 1, the relative magnetic permeability, and the like. FIGS. 4A and 4B show the real part μ ′ and the imaginary part μ ″ of the relative magnetic permeability μ due to the difference in the relative magnetic permeability μ of the ferrite to be crushed and mixed, respectively.
000 low frequency magnetic material powder is used. In this case, the mixing ratio of the magnetic material powder is 70
wt%. FIG. 4B shows that the housing 1 preferably has a relative magnetic permeability of 100 or more in order to obtain a high value in the imaginary part μ ″ having a large influence on the impedance in the high frequency region.

FIGS. 5A and 5B show the housing 1 in which the mixing ratio of the magnetic material powder of Ni—Zn having a relative magnetic permeability μ of 700 to the PPS resin is changed to 50, 65, and 80 wt%. 5 shows changes in relative magnetic permeability μ in real part μ ′ and imaginary part μ ″ when a conventional pin is used as a contact. As can be seen from FIG. The real part μ 'and the imaginary part μ ”of the relative magnetic permeability
Decrease together. When the mixing ratio of the magnetic material powder is 50% by weight, the value of the real part μ ′ of the relative magnetic permeability is the value of μ ′ = 1 of the vacuum.
In order to obtain desired characteristics, the mixing ratio of the magnetic material powder is preferably 50% by weight or more. On the other hand, if the mixing ratio of the magnetic material powder exceeds 90 wt%, the dimensional accuracy at the time of injection molding is deteriorated.
It is preferably at most t%.

FIG. 6 shows another embodiment of the present invention, in which a magnetic material 6 made of a prismatic Mn--Zn ferrite core shown in FIG. As shown in FIGS. 6C and 6D, the protrusion 6a is engaged with the engaging portion 1g in the insertion hole 1f provided between the contact insertion holes 1a and 1a in FIG. It is. In order to increase the impedance at high frequencies, the housing 1 is made by mixing about 80 wt% of a Ni—Zn sintered ferrite powder having a relative magnetic permeability μ of about 800 and an average particle diameter of about 100 μm in a PPS resin, and injecting the mixture. It was produced by molding.

Here, the Mn—Zn sintered ferrite core is not suitable for a structure in which a plurality of signals flow as it is, such as a connector, because the Mn—Zn sintered ferrite core has poor insulation properties. Since the resin layer made of the housing 1 is interposed between the flowing contact 2 and the insertion hole 1e into which the flowing contact 2 is inserted, it is not necessary to perform an insulating treatment particularly on the surface even when the sintered Mn-Zn ferrite core is used.

FIG. 7A shows a housing 1 provided with a contact 2 using a PPS resin and having a magnetic material 3 made of a Ni--Zn sintered ferrite core, and a Mn as shown in FIG. FIG. 4 shows impedance characteristics of a case in which the Zn-based sintered ferrite 6 is provided in the housing 1. As can be seen from FIG. 7A, when the magnetic field generated from the contact 2 passes through the ferrite core 6, the magnetic resistance around the contact 2 decreases, and as a result, a higher impedance characteristic is obtained from a low frequency region. It is understood that it can be done.

FIG. 7 (B) shows a contact made by attaching a resin material to a permalloy prism having a relative magnetic permeability of about 20,000, which is a metal ferromagnetic material, and curing and insulating the same. 2 is a diagram showing the impedance characteristics of Comparative Example 2 in comparison with a conventional contact, that is, a conventional contact having no spiral intermediate portion 2a or magnetic material 3. FIG. Compared to the ferrite cores described above, metallic ferromagnetic materials have relatively low magnetic properties at relatively low frequencies.However, they exhibit very high relative permeability in the low-frequency region, and therefore increase the impedance in the low-frequency region. If it is desired, it can be said that the noise removal effect is very high.

FIG. 8A shows an impedance characteristic of a connector having the structure shown in FIG. 6 in which a prismatic permalloy having a relative permeability of 20,000 is used as the magnetic material 6 and a conventional resin housing is used as the housing 1. FIG. 5 is a diagram showing a comparison between the conventional housing and the impedance characteristics of a contact. As shown in FIG. 8A, by using permalloy as the magnetic material 6 interposed between the contacts, the magnetic resistance around the contacts 2 is reduced,
As a result, a high impedance characteristic is exhibited in a low frequency region, and a high noise removing effect is obtained in a relatively low frequency region.

FIG. 8 (B) shows a contact having a prismatic ferrite core having a relative permeability of 2,000 as the magnetic material 3 and having a spiral intermediate portion 2a in the structure of FIG. 2 (C). FIG. 6 is a diagram showing impedance characteristics when permalloy, which is a metal ferromagnetic material, is used as a material of the metal 2 itself in comparison with the impedance characteristics of a conventional contact. As can be seen from FIG. 8B, not only the ferrite core is used as the magnetic material 3 but also the contact 2 itself is made of permalloy, so that a high impedance can be realized in a wide range from a low frequency region to a high frequency region. it can.

FIG. 9 shows another embodiment of the present invention. As shown in FIGS. 9B and 9D, instead of inserting a magnetic material into the contact 2A, the contact A recess 1h surrounding the contact 2A is provided in the axial direction of 2A, and a magnetic material 7 made of a rectangular cylindrical ferrite core is inserted into the recess 1h as shown in FIGS. 9 (A) and 9 (C). It is.
The contact 2A is prevented from coming off by locking the protrusion 2e to a locking portion 1k provided in the contact insertion hole 1e of the housing 1. Also, the magnetic material 7 has its projection 7a formed in the concave portion 1h.
Is locked by locking to the locking portion 1m provided in the above.

FIG. 10 (A) shows the magnetic material 7 shown in FIG.
FIG. 6 is a diagram showing impedance characteristics of a connector using a Mn—Zn-based sintered ferrite core having a relative magnetic permeability of about 2500 in comparison with impedance characteristics of a conventional connector. As shown in FIG. 10A, by disposing the magnetic material 7 on the outer peripheral side of the contact 2A, the magnetic resistance around the contact 2A is reduced, and as a result, a high impedance is provided from the low frequency region to the high frequency region. Show characteristics. In addition, as shown in FIG.
With the structure in which the cylindrical magnetic material 7 is fitted into the concave portion 1h, the attachment of the magnetic material becomes easy.

FIG. 10 (B) shows the impedance characteristics when a permalloy having a relative magnetic permeability of about 20,000 is used as the magnetic material 7 of FIG. FIG. FIG.
As shown in FIG. 0 (B), when permalloy is used as the magnetic material 7, a high impedance characteristic is exhibited in a relatively low frequency region.

FIG. 11A is a partial sectional side view showing another embodiment of the connector according to the present invention, and FIG. 11B is a rear view thereof. In this embodiment, the contact 2
A cylindrical part 2f is formed at least in the middle part of B, and the magnetic material 8 is inserted into the cylindrical part 2f. As shown in FIG. 11 (B), a connecting portion 2h with the cable 4 is formed on the back surface of the contact 2B by raising and bending a horizontally extending piece. A small-diameter cylindrical joint 2g is formed at the tip of the child 2B.

FIG. 12 shows a comparison between the impedance characteristics of a case where a Ni--Zn sintered ferrite having a relative magnetic permeability of about 2000 is inserted into the contact 2B as the magnetic material 8 and a case where the ferrite is not inserted. FIG. As can be seen from FIG. 12, high impedance can be obtained from the low frequency range to the high frequency range by inserting the Ni—Zn based ferrite.

If the structure shown in FIG. 11 is employed, the contact 2B is small, and if it is difficult to form the spirally wound portion 2a shown in FIG. By inserting the magnetic material 8 therein, a high inductance can be obtained while being small, and a noise removing effect can be obtained.

FIG. 13 shows another embodiment of the connector according to the present invention, which is provided with a cover 9 for covering the housing 1 provided with the contact 2 having the magnetic material 3 shown in FIGS.
A resin 10 mixed with a magnetic material powder is injected between the cover 9 and the housing 1 through an injection port 9a, filled and molded. When the resin 10 is filled between the housing 1 and the cover 9 in this manner, the periphery of the contact 2 is filled with the resin 10 filled with the magnetic material powder, a high inductance is obtained, and a high noise removing effect is obtained. Is obtained. Further, by providing the Ni—Zn-based sintered ferrite in the contact 2, high impedance can be obtained over a high frequency range. In particular, since the contact hole 1a is filled with the resin 10, the space is not enlarged, and the space can be saved, and the cost can be reduced.

FIG. 14 shows a housing 1 made of a resin not mixed with a magnetic material powder, and a contact 2 into which a Ni—Zn sintered ferrite having a relative magnetic permeability of about 2000 is inserted as a magnetic material 3. , Ni having a relative magnetic permeability of about 800
FIG. 13 shows a resin obtained by mixing about 80 wt% of crushed powder of Zn ferrite having an average particle size of about 100 μm in PPS resin.
The impedance characteristics of a resin injected and cured at 260 ° C. and a resin having no injected resin 10 are shown in comparison. As can be seen from FIG.
It can be seen that if the injection resin 10 is provided, the impedance is increased in the frequency region of 10 MHz or more, and particularly high impedance is obtained in the frequency region of 1 GHz or more. The structure having such an injection resin 10 is as follows.
A contact 2A having no magnetic material 3 as shown in FIG.
Alternatively, the present invention can be applied to a connector having a contact 2B having a cylindrical portion 2f as shown in FIG. Further, the magnetic material 3 can also be used in a case where a metallic ferromagnetic material having an insulating coating is used.

[0045]

According to the first aspect of the present invention, since the contact of the connector is formed in a spiral shape and the magnetic material is inserted therein, the inductance is higher than when the magnetic material is provided outside the contact. Is obtained, and a high noise removing effect is obtained.
Further, since the noise removing effect can be obtained by changing the structure of the contact itself, space can be saved and the cost can be reduced.

According to the second aspect, in the first aspect, a metal ferromagnetic material having a high relative magnetic permeability is used as the contact, so that a higher inductance value can be obtained.
The noise removal effect increases.

According to the third aspect, in the first or second aspect, since the resin molded body containing the magnetic material powder in the housing is used, the periphery of the contact is also surrounded by the magnetic material, and the inductance is further increased. The value increases, and the noise removal effect increases.

According to the fourth aspect, in the first or second aspect, the magnetic material is provided also between the contacts provided on the housing, so that a magnetic material is provided on the side of the contacts.
Further, the inductance value increases, and the noise removing effect increases.

According to the fifth aspect, in the first or second aspect, a cylindrical magnetic material is arranged in a portion of the housing around the contact, so that the periphery of the contact is also surrounded by the magnetic body. And the inductance value is further increased, and the noise removing effect is enhanced. Further, if a concave portion is formed in the housing and a cylindrical magnetic material is fitted into the concave portion, mounting of the magnetic material becomes easy.

According to a sixth aspect of the present invention, at least the intermediate portion of the contact is formed in a cylindrical shape, and the magnetic material is inserted into the cylindrical portion, so that it is difficult to form the spirally wound portion. By forming the contact into a cylindrical shape and inserting a magnetic material therein, a compact connector having a high inductance value can be obtained, and a noise removing effect can be obtained. Further, since the noise removing effect can be obtained without changing the structure of the contact itself, space can be saved and the cost can be reduced.

According to a seventh aspect of the present invention, there is provided the connector having a cover for covering the housing on which the contacts are provided, and a resin mixed with a magnetic material powder is filled and molded between the cover and the housing. As a result, a high noise removing effect can be obtained. Further, since the noise removing effect can be obtained without changing the structure of the contact itself, space can be saved and the cost can be reduced.

The connector of claim 8 is the connector of claim 3 or 7.
In the above, the resin in which the magnetic material powder is mixed may be a powder of crushed powder of Ni—Zn-based ferrite having a relative magnetic permeability of 100 or more.
Since it is composed of a mixture of 0 to 90 wt%, loss in a high frequency region can be increased and unnecessary high frequency noise can be removed. Also, dimensional accuracy during molding is ensured.

[Brief description of the drawings]

FIG. 1A is a perspective view showing an embodiment of a connector according to the present invention, and FIG. 1B is a sectional view thereof.

2A is a perspective view showing an example of a magnetic material to be inserted into a contact of the present invention, FIG. 2B is a side view showing an example of a contact into which the magnetic material is inserted, and FIG. A side view showing a state where the magnetic material of A) is inserted into the contact of FIG.
(E) is a front view and a rear view of (B), respectively.

3 (A) is a diagram showing the impedance characteristics of the contact according to the present invention shown in FIG. 2 (C) in comparison with a conventional one, and FIG. 3 (B) further has the contact shown in FIG. 2 (C); FIG. 9 is a diagram illustrating impedance characteristics when a resin molded body having a magnetic material powder is used for a housing in comparison with the impedance characteristics of a conventional connector and a connector having a mere resin housing.

FIGS. 4A and 4B show N and N respectively in the present invention.
FIG. 7 is a diagram showing frequency characteristics of a real part μ ′ and an imaginary part μ ″ of magnetic permeability due to a difference in relative magnetic permeability μ of a magnetic material powder made of i-Zn ferrite when relative magnetic permeability is 10, 100, and 1000. is there.

FIGS. 5A and 5B show Ni—Zn in the present invention.
FIG. 4 is a diagram showing frequency characteristics of a real part μ ′ and an imaginary part μ ″ of relative permeability μ when the housing is formed by changing the mixing ratio of the ferrite magnetic material powder to the PPS resin to 50, 65, and 80 wt%, respectively. It is.

6A and 6B show another embodiment of the connector according to the present invention, wherein FIG. 6A is a perspective view showing an example of a magnetic material inserted into a concave portion provided in a housing, and FIG. 6B is a perspective view showing an example of a housing. (C) is a perspective view showing a state where the magnetic material (A) is inserted into the housing (B), and (D) is a sectional view thereof.

FIG. 7A shows impedance characteristics of a connector in which ferrite as a magnetic material is inserted into a housing as shown in FIGS. 6C and 6D, and a connector having a housing in which the magnetic material is not inserted into the housing. FIG. 2B is a diagram showing a comparison between impedance characteristics of a conventional contact and a case where permalloy is used as a magnetic material to be inserted into the contact in the contact having the structure of FIG. is there.

FIG. 8A shows a case where the structure shown in FIG. 6 is employed as a connector structure and permalloy is employed as a magnetic material inserted between the contacts, and a case where no magnetic material is inserted between the contacts. FIG. 2B is a diagram showing a comparison of impedance characteristics by adopting a conventional structure, and FIG. 2B adopts the structure of FIGS. 2C and 2D, in which a ferrite core is inserted into a contact, and permalloy is applied to the contact itself. It is a figure which shows the impedance characteristic of the contact at the time of using compared with the conventional contact.

9A and 9B show another embodiment of the connector of the present invention, in which FIG. 9A is a perspective view showing an example of a magnetic material inserted into a concave portion of a housing, FIG. 9B is a perspective view showing an example of a housing, (C) is a perspective view showing a state where the magnetic material of (A) is inserted into the housing of (B), and (D) is a cross-sectional view thereof.

10 is a diagram showing impedance characteristics when a ferrite core is used as a magnetic material provided in the housing in the connector of FIG. 9 in comparison with that of a connector having a conventional structure, and FIG. FIG. 7 is a diagram showing impedance characteristics when a permalloy core is used as a magnetic material provided in the conventional connector in comparison with a conventional connector.

FIG. 11A is a partial cross-sectional side view showing another example of a contact used in the connector of the present invention, and FIG. 11B is a rear view thereof.

FIG. 12 is a diagram showing impedance characteristics of the contact of FIG. 11 in comparison with a conventional contact.

13A and 13B show another embodiment of the connector of the present invention, in which FIG. 13A is a perspective view showing a housing and a cover in a separated state, and FIG. 13B is a diagram in which the cover is put on the housing and resin is injected into the cover. FIG. 4C is a cross-sectional view showing a state before the injection, and FIG. 4C is a cross-sectional view showing a state after the resin is injected.

FIG. 14 is a diagram showing a comparison between impedance characteristics of a resin injected with a resin having a magnetic material powder made of ferrite as in the connector of FIG. 13 and a resin not injected.

[Description of Signs] 1: Housing, 1a: Contact insertion hole, 1c: Locking portion,
1d: receiving portion, 1e: contact insertion hole, 1f: magnetic material insertion hole, 2A, 2B: contact, 2a: intermediate portion, 2b,
2g: joint portion, 2c, 2h: cable connection portion, 2f: cylindrical portion, 3: magnetic material, 4: cable, 5: resin, 6 to
8: magnetic material, 9: cover, 10: magnetic material powder mixed resin

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5E021 FA03 FA09 FB07 FB14 FC19 FC21 FC32 LA09 LA12 LA18 MA13 MA27 5E087 EE07 FF03 FF13 FF16 FF19 GG14 KK06 PP08 RR03 RR04 RR25 RR29

Claims (8)

[Claims] 1. A connector, wherein an intermediate portion of a contact provided in a housing is formed in a spiral shape, and a magnetic material is inserted into the spiral formed portion. 2. The connector according to claim 1, wherein said contact is made of a metallic ferromagnetic material. 3. The connector according to claim 1, wherein the housing is formed of a resin molded body mixed with a magnetic material powder. 4. The connector according to claim 1, wherein a plurality of the contacts are provided, and a magnetic material is provided in a portion of the housing between the contacts. 5. The connector according to claim 1, wherein a recess surrounding the contact is provided in the housing in the axial direction of the contact, and a cylindrical magnetic material is inserted into the recess. 6. A connector characterized in that at least an intermediate portion of the contact is formed in a cylindrical shape, and a magnetic material is inserted into the cylindrical portion. 7. A connector comprising a cover for covering a housing provided with a contact, wherein a resin mixed with a magnetic material powder is filled between the cover and the housing and molded. 8. The resin according to claim 3, wherein the resin mixed with the magnetic material powder is 50 to 90 wt% of a crushed powder of Ni—Zn ferrite having a relative magnetic permeability of 100 or more.
%.