JP2022108539A - Connector member - Google Patents

Abstract

To provide a connector member which can suppress radiation noise leakage by using a simple configuration.SOLUTION: In a connector member 10, a hood 13 is made of an insulative material, and an inner part 12 is made of a conductive material. The inventor has found that electric field shielding performance can be exerted even through the hood 13 is made of the insulative material because the inner part 12 narrows a passage area in the inside of the hood 13. Thus, it is possible to provide the connector member 10 with improved electric field shielding performance by using a simple configuration where the inner part 12, which is one of the components of the connector member 10, is made of the conductive material.SELECTED DRAWING: Figure 1

Description

The disclosure in this specification relates to a connector member that electrically connects one device to another device.

2. Description of the Related Art A large number of connector members are used in electronic equipment for connecting lead wires, lead wires and electric circuits, electric circuits and electric circuits, and the like. The connector member has a structure in which metal terminals are held in a housing made of an electrically insulating resin.

In order to prevent electromagnetic wave signals from leaking from the connector to the outside, or electromagnetic noise existing outside from entering the inside from the connector, we have developed an electromagnetic wave signal leakage prevention function and an electromagnetic wave noise intrusion prevention function. , the connector portion and its vicinity.

In Patent Document 1, a conductive annular member is provided in an opening of a conductive housing, and is arranged so as to be sandwiched between the opening and the connector portion. The annular member increases the contact area between the connector portion and the housing, thereby preventing leaked radio waves in the housing from leaking to the outside through the opening.

JP 2013-211493 A

In the technique described in Patent Document 1, since a separate member, the annular member, is provided, there is a problem that the number of assembly steps increases and the number of parts increases.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present disclosure to provide a connector member capable of suppressing leaked radiation noise with a simple configuration.

The present disclosure employs the following technical means to achieve the aforementioned objects.

The connector member disclosed herein is a connector member (10) having a conductive longitudinal terminal (11) and electrically connecting one end and the other end of the terminal,
A hood (13) having a cylindrical shape with both ends open and having one end of a terminal disposed therein and made of an insulating material; and an inner (12) made of a conductive material, through which the terminal is inserted, provided so as to narrow the passage area in the hood more than when the inner is absent, and the inner and the terminal are insulated. It is a connector member.

According to such a connector member, the connector member includes a terminal, a hood and an inner. An elongated terminal is positioned inside a hood having a tubular shape at one end. Further, the inner is provided so as to narrow the passage area inside the hood, and the terminal is inserted therethrough. The hood is made of insulating material, and the inner is made of conductive material. The applicant has found that since the inner narrows the inside of the hood, the hood exhibits electric field shielding performance even if the hood is made of an insulating material. Therefore, it is possible to realize a connector member with improved electric field shielding performance with a simple configuration in which the inner, which is a component of the connector member, is made of a conductive material. Thus, a connector member that suppresses radiation noise can be realized with a simple configuration in which an inner having conductivity is provided.

It should be noted that the symbols in parentheses of each of the means described above are examples showing the correspondence with specific means described in the embodiments described later.

FIG. 2 is a perspective view showing the connector member 10 of the first embodiment; FIG. 3 is a perspective view showing a mounting state of the connector member 10; FIG. 2 is a bottom perspective view of the mounting state of the connector member 10; Side view of connector member 10 Front view of connector member 10 Sectional view of connector member 10 Graph showing simulation results Graph showing simulation results of the second embodiment

A plurality of embodiments for carrying out the present disclosure will be described below with reference to the drawings. The same reference numerals may be attached to portions corresponding to the matters described in the preceding embodiments, or one character may be added to the preceding reference numerals to omit redundant description. Further, when a part of the configuration is explained in each embodiment, the other part of the configuration is assumed to be the same as the previously explained embodiment. It is possible not only to combine the parts specifically described in each embodiment, but also to partially combine the embodiments if there is no problem with the combination.

(First embodiment)
A first embodiment of the present disclosure will be described with reference to FIGS. 1 to 7. FIG. A connector member 10 is used to electrically connect the two parts. The connector member 10 has a plurality of electrically conductive longitudinal terminals 11 . The terminal 11 is a conductive portion of the connector member 10 and electrically connects one end and the other end. Connector member 10 electrically connects the two parts by means of terminals 11 .

The connector member 10 electrically connects the electronic device 100 and another device in this embodiment. The connector member 10 is attached to the electronic device 100 as shown in FIGS. 1-3. The connector member 10 is used as a path for transmitting and receiving signals of the electronic device 100, a power supply path, and the like. As shown in FIG. 2, the connector member 10 is attached to the housing 101 of the electronic device 100, and the terminals 11 are exposed to the outside. The connector member 10 is of a so-called female type, and is electrically connected to another device by fitting with a male type connecting portion. The terminal 11 electrically connects the inside of the housing 101, the electronic components, and an external device.

In the connector member 10, a substrate on which electronic components are mounted inside the housing 101 and the terminal 11 are connected by soldering. The board inside the housing 101 is fixed to the housing 101 with screws or the like. Connector member 10 includes terminal 11 , inner 12 , hood 13 and wall 14 .

The hood 13 has a tubular shape with both ends opened, and one end of the terminal 11 is arranged inside. A hood 13 is provided so as to surround the terminal 11 in order to prevent the terminal 11 from being bent by an external force. One end portion of the hood 13 positioned on one side in the axial direction X is a portion into which a connecting portion of another device is inserted. One side of the hood 13 in the axial direction X is the left side in FIG. The other side of the hood 13 in the axial direction X is the right side in FIG. The other end of the hood 13 located on the other side in the axial direction X is a portion where the terminal 11 protrudes from the hood 13 . The hood 13 is made of an insulating material such as a resin material. The hood 13 is made of polyimide in this embodiment.

The inner 12 is a plate-like member, and is provided so as to cross the axial direction X of the hood 13 and narrow the inside. The inner 12 is provided so as to make the passage area in the hood 13 narrower than when the inner 12 is absent. The inner 12 partially closes the axial direction X of the hood 13 when viewed in the axial direction X of the hood 13, as shown in FIG. The inner 12 extends in a direction orthogonal to the axial direction X of the hood 13 and is provided so as to divide the axial direction X of the hood 13 . The inner 12 is provided like a so-called bamboo joint. The inner 12 is located closer to the electronic device 100 than the center of the hood 13 in the axial direction X. As shown in FIG.

The inner 12 is formed with an insertion hole 15 through which the terminal 11 is inserted and which has a clearance from the outer peripheral surface of the terminal 11 . The opening 102 of the insertion hole 15 and the outer peripheral surface of the terminal 11 are separated. The insertion holes 15 are formed in at least the same number as the terminals 11 . The inner 12 is made of a conductive material. The inner 12 and the terminal 11 are insulated by the gap between the opening 102 of the insertion hole 15 and the outer peripheral surface of the terminal 11 .

The wall 14 is a plate-like member and is provided so as to extend from the outer peripheral portion of the hood 13 in a direction crossing the axial direction X of the hood 13 . The wall 14 is positioned to extend outside the hood 13 when viewed in the axial direction X of the hood 13 . The wall 14 is provided to stand from the other end of the hood 13 in the axial direction X. As shown in FIG. The wall 14 is provided on the hood 13 in a so-called brim shape. The wall 14 has a rectangular shape when viewed in the axial direction X of the hood 13 . Wall 14 fits into opening 102 of housing 101 . Wall 14 is made of a conductive material. As shown in FIG. 6, in this embodiment, the wall 14 and the inner 12 are configured integrally.

The terminal 11 has a longitudinal shape, and a plurality of terminals 11 are provided in this embodiment. The terminal 11 is manufactured by, for example, stamping a conductive thin metal plate with a press molding machine and bending at a predetermined portion at the same time as or after the stamping.

The terminals 11 are arranged side by side at a predetermined interval and integrally formed inside the hood 13 . The terminal 11 is arranged to extend in the axial direction X of the hood 13 . One end of terminal 11 is positioned inside hood 13 . One end of the terminal 11 is located closer to one end of the hood 13 than the inner 12 is. The other end of the terminal 11 is located inside the housing 101 outside the other end of the hood 13 . The other end of the terminal 11 is electrically connected to a circuit board or the like of the electronic device 100 inside the housing 101 .

The hood 13 is a portion protruding from the electronic device 100 . By inserting the connecting portion of another device into the hood 13, the terminal 11 and the connecting portion of the other device come into contact with each other. The inner 12 also functions as a stopper for stopping the insertion of the connecting portion of another device.

Hood 13, inner 12, wall 14 and terminal 11 are integrally formed by two-color molding. The inner 12 and the wall 14 are made of the same electrically conductive material. A conductive material has, for example, a conductivity of 10 [S/m] or more. A material having conductivity is, for example, a composite material of a conductive resin and a metal. Specifically, the conductive material is, for example, a stainless fiber composite resin with a conductivity of 10 [S/m]. As other materials having conductivity, the conductivity is 10 [S / m] or more, and a combination of a conductive resin having carbon fibers and iron fibers and metals such as aluminum, copper, iron and magnesium There may be.

Next, the electric field shield performance of this embodiment will be described. A 3D electric field simulation was performed for Example 1 and Comparative Examples 1 to 3 to evaluate the influence of the connector portion. In the electric field simulation, for a model in which the shielding metal extends from the wall 14, ideal radio waves are applied to the connector member 10 and the shielding metal from one end side of the hood 13, i.e., from the outside. Calculated radio waves.

In Example 1, the material of the hood 13 is polyimide, and the material of the inner 12 and wall 14 is stainless fiber composite resin. As parameters, polyimide has a dielectric constant ε of 3.5 and a magnetic permeability μ of 1. The stainless fiber composite resin has an electric conductivity σ of 10 [S/m] and a magnetic permeability μ of 1.

In Comparative Example 1, the material of the hood 13, inner 12 and wall 14 was polyimide. In Comparative Example 2, the material of the inner 12 was polyimide, and the material of the hood 13 and wall 14 was stainless fiber composite resin. In Comparative Example 3, the material of the inner 12, the hood 13 and the wall 14 was a stainless fiber composite resin.

FIG. 7 shows the results of the simulation. In FIG. 7, the vertical axis is radiation immunity [dB] and the horizontal axis is frequency. The larger the value on the vertical axis, the higher the electric field shielding performance, that is, the higher the shielding ability. As shown in FIG. 7, it can be seen that the electric field shielding performance of Example 1 is higher than that of Comparative Examples 1-3.

As described above, in the connector member 10 of this embodiment, the hood 13 is made of an insulating material, and the inner 12 is made of a conductive material. The inventors of the present invention have found that since the inner 12 narrows the passage area inside the hood 13, even if the hood 13 is made of an insulating material, the electric field shielding performance can be exhibited. Therefore, the connector member 10 with enhanced electric field shielding performance can be realized with a simple configuration in which the inner 12, which is a component of the connector member 10, is made of a conductive material. Thus, the connector member 10 that suppresses the radiation noise can be realized with a simple configuration in which the conductive inner 12 is provided.

Also, in this embodiment, the wall 14 is made of a material having conductivity. As a result, the electric field shield performance can be further enhanced.

Further, in this embodiment, the inner 12 is formed with an insertion hole 15 through which the terminal 11 is inserted and which is spaced apart from the outer peripheral surface of the terminal 11 . Since the inner 12 is electrically conductive, contact with the terminal 11 may result in electrical continuity and malfunction. Therefore, by providing a space between the terminal 11 and the inner 12, it is possible to insulate from the inner 12, so that it is possible to prevent the occurrence of problems caused by the conduction with the inner 12.

Also, in this embodiment, the wall 14 fits into the opening 102 of the housing 101 . Since the wall 14 is larger than the hood 13, the alignment of the opening 102 of the housing 101 and the hood 13 is facilitated. As a result, the assembly of the connector member 10 to the housing 101 can be improved.

Further, in this embodiment, the hood 13 and the inner 12 are integrally formed by two-color molding. Although the hood 13 and the inner 12 are made of different materials, they can be integrally formed by two-color molding, so even if they are made of different materials, an increase in manufacturing steps can be suppressed. Also, the joint strength between the hood 13 and the inner 12 can be ensured.

(Second embodiment)
Next, a second embodiment of the present disclosure will be described using FIG. In this embodiment, the space between the inner 12 and the terminal 11 is closed with an insulating member. The insulating member is the same resin material as the hood 13, for example. As a result, the terminal 11 and the inner 12 are insulated by the insulating member.

Next, the electric field shield performance of this embodiment will be described. A 3D electric field simulation was performed in the same manner as in the above-described first embodiment, and the influence of the connector member 10 was evaluated. In Example 2, the material is the same as Example 1, and the gap between the inner 12 and the terminal 11 is filled with polyimide.

Comparative Example 4 is made of the same material as Comparative Example 1, and the gap is closed with polyimide as in Example 2. In Comparative Example 5, the material is the same as in Comparative Example 2, and the gaps are filled with polyimide as in Example 2. In Comparative Example 6, the same material as in Comparative Example 3 is used, and the gap is closed with polyimide as in Example 2.

As shown in FIG. 8, the simulation results show that Example 2 has higher electric field shielding performance than Comparative Examples 4-6. Comparing Example 1 and Example 2, the resonance frequency of Example 2 is shifted to the high frequency side by about 280 MHz. Therefore, the frequency characteristic of radiation noise can be adjusted by providing or not providing an insulating member.

We also conducted an experiment to see how the resonance frequency changes when the dielectric constant of the material that closes the gap is changed. When polyimide having a dielectric constant ε of 2.1 was used, the resonance frequency of Example 2 shifted to the high frequency side by about 160 MHz. Therefore, the shift of the resonance frequency was smaller than in the case of polyimide with a dielectric constant ε of 3.5. In other words, the experiment has shown that the resonance frequency shifts to the high frequency side if the dielectric constant is increased. Therefore, the frequency characteristics of radiation noise can be adjusted by changing the dielectric constant of the insulating member.

Thus, in this embodiment, the terminal 11 and the inner 12 are insulated by the insulating member. As described above, since the inner 12 is conductive, contact with the terminal 11 may result in electrical continuity and malfunction. Therefore, by providing an insulating member in the gap, the terminal 11 and the inner 12 can be reliably insulated, so that the occurrence of problems caused by the electrical connection with the inner 12 can be prevented.

(Other embodiments)
Although the preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present disclosure.

The structures of the above-described embodiments are merely examples, and the scope of the present disclosure is not limited to the scope of these descriptions. The scope of the present disclosure is indicated by the description of the claims, and further includes all changes within the meaning and range of equivalents to the description of the claims.

In the first embodiment described above, the terminal 11 and the inner 12 are insulated by the gap, but the configuration is not limited to this. For example, the terminal 11 may form an insulating layer on the portion that contacts the inner 12, or may be filled with an insulating resin. Since the inner 12 has electrical conductivity, if the inner 12 comes into contact with the terminal 11, there is a risk of causing a malfunction. By providing the terminal 11 with an insulating layer or insulating resin, the inner 12 and the terminal 11 can be reliably insulated from each other, so that the occurrence of problems caused by the conduction between the inner 12 and the terminal 11 can be prevented. The insulating layer of terminal 11 is formed, for example, by insulating coating.

Although the connector member 10 includes the wall 14 in the above-described first embodiment, the connector member 10 may be configured without the wall 14 . That is, the connector member 10 may have the hood 13 , the inner 12 and the terminals 11 without the wall 14 . Since the wall 14 is not provided, the electric field shielding performance is lowered, but the electric field shielding performance can be improved as compared with the comparative example in which the hood 13 and the inner 12 are made of insulating material.

DESCRIPTION OF SYMBOLS 10... Connector member 11... Terminal 12... Inner 13... Hood 14... Wall 15... Insertion hole 100... Electronic device 101... Housing 102... Opening

Claims (7)

A connector member (10) having a conductive longitudinal terminal (11) and electrically connecting one end and the other end of the terminal,
a hood (13) having a cylindrical shape with both ends open, in which one end of the terminal is arranged, and made of an insulating material;
A plate-shaped member that intersects the hood in the axial direction, is provided so as to narrow the passage area in the hood compared to when there is no inner, the terminal is inserted therethrough, and has electrical conductivity. an inner (12) of material;
A connector member in which the inner and the terminal are insulated. 2. The plate-shaped member according to claim 1, further comprising a wall (14) made of a conductive material and extending from an outer peripheral portion of the hood in a direction crossing the axial direction of the hood. connector member. 3. The connector member according to claim 1, wherein an insulating layer is formed on a portion of said terminal that contacts said inner. An insertion hole (15) through which the terminal is inserted is formed in the inner,
The connector member according to any one of claims 1 to 3, wherein the opening of the insertion hole (15) is separated from the outer peripheral surface of the terminal. 5. The connector member according to claim 4, wherein a space between said inner and said terminal is closed with an insulating member. The connector member is connected to an opening (102) of a housing (101) in which electronic components are accommodated,
The terminal electrically connects the electronic component inside the housing and an external device,
3. The connector member according to claim 2, wherein the wall fits into the opening of the housing. 7. The connector member according to claim 1, wherein said hood and said inner are integrally formed by two-color molding.

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