JP2003142212A - Electrical connection member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical connection member in which the noise by the floating metal can be reduced. SOLUTION: This is an electrical connection member that has a metal member in a state of electrical floating in which the floating metal member is connected so as to be conducted to the grounding part through a conductor and the floating state is made ineffective.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connecting member capable of reducing noise caused by a floating metal.

[0002]

2. Description of the Related Art In recent years, particularly in the field of domestic audio equipment, attention has been paid to sound quality changes due to the quality of power plugs and the like. For example, in addition to a pair of energizing blades, a power plug having an independent ground pin (hereinafter referred to as a three-core plug or a three-core power plug) or a power plug including only a pair of energizing blades (hereinafter, a two-core plug or a two-core plug). There is a core power plug). Of these, the three-core power plug is superior in electrical characteristics to the two-core power plug because it has the ground pin. In addition to that, the three-core power plug has high mechanical strength because it is connected to the AC power source at three points. Among them, a plug called a hospital grade plug (which is originally used in medical equipment that requires a stable power source) has a housing with high mechanical strength and high solidity. With excellent mechanical strength and robustness, it has the characteristics of suppressing noise and obtaining a stable power supply. This three-core power plug, especially the hospital grade plug, has attracted attention for its characteristics and is used in the field of audio equipment to obtain good sound quality.
Many three-core power plugs and hospital grade plugs have been developed to improve sound quality.

[0003]

However, even this hospital grade plug has the following problems.

The hospital grade plug has a large number of fixing metal screws (hereinafter referred to as metal screws) for fixing the casing, the power cable, and each member in order to improve mechanical strength and workability during assembly. ) Is used.
The metal screw is not electrically connected to any of the power supply, the ground, and the signal cable (that is, not energized when connected to the AC power supply), and is in an electrically floating state. Due to this, the metal screw catches radio waves from the surroundings, and a potential difference occurs between the metal screw and the original energized portion (pointing to the electrode part etc.) (the potential difference between each metal screw also occurs). Is occurring), and at the same time a magnetic field is generated,
Unintended noise may occur. Such a phenomenon may lead to deterioration in sound quality when the hospital grade plug is used in an audio device.

The present invention provides a power plug which does not have such a problem, or an electric connection member such as a tap or an outlet using a metal screw in an electrically floating state as a fixing member. With the goal.

[0006]

The present invention provides a metal member in an electrically floating state such as a metal screw used for assembling and fixing each member forming an electric connection terminal member such as a power plug. In the invention, the floating state of the metal member is eliminated by connecting the grounding member with the floating metal portion). In addition, the conductor
A guide is provided inside the electrical connection terminal member such as the power plug to keep the distance as much as possible from the power supply line (the electrode part and the connection part that connects it to the power supply line) and is approximately parallel to the power supply line. It is connected to the ground by leading to. In the present invention, a metal member used for an electrical connection member such as a conventional power plug, which collects and generates noise because it is in an electrically floating state,
By electrically connecting to the ground terminal etc. with a conductor,
The problems of the above-mentioned conventional techniques are solved. That is, it is an electrical connection member that nullifies the electrically floating state of the metal member in the electrically floating state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The electrical connecting member according to the present invention will be described below with reference to the drawings using a power plug having a ground pin (hereinafter referred to as a power plug) as an example.

FIG. 1 is a schematic diagram of a power plug for reducing noise due to floating metal. (It is a diagram mainly showing an electrical connection path between the metal screw and the ground pin G).

The power plug of FIG. 1 mainly includes a base member S for holding a pair of terminal blades B, B'which are energizing terminal portions connectable to an AC power source and a ground terminal G, a casing M, a rear portion of the casing M, The connection mechanism portion S of the terminal blades B, B ′ and the ground pin G enters into the casing M from the bottom surface portion.
B, SB'SG (each inside the casing M, exposed from the side groove of the base member S, or exposed from a large groove provided at an appropriate position on the bottom surface), which holds a conductor, respectively. It is composed of clamper members C and C'for tightening and fixing the cable K.

Recesses SO and SO'are provided at appropriate places on the top surface SC of the base member S of FIG. 1 on the side connected to the AC power supply so as to form a pair with a predetermined interval, and the pair of recesses are provided. S
The O and SO ′ are provided with screw insertion holes SS and SS ′ which are inserted in parallel with the lengthwise direction of the terminal blades B and B ′ and the ground pin G by the screw members MN and MN ′. A pair of screw holes NA, NA 'for receiving the tips of the screw members MN, MN' are provided at appropriate places inside the casing M (as shown in the figure, when the screw members MN, MN 'are screwed, The tip portion of the casing M protrudes from the screw holes NA, NA 'toward the bottom surface). In addition, the pair of recesses SO and SO ′ on the top surface SC are closer to the screw member MN than the top surface SC.
The head of MN 'is provided so as not to project. The base member S enters the inside of the casing M from the bottom thereof, is positioned by the support portion MHS provided inside the casing M, and as shown in FIG. 1, most of the base member S is included in the casing M. Retained. And the base member S
Is fixed to the casing M by screwing the screw members MN and MN ′. Clamper member C,
C ′ is located near the bottom of the casing M. The clamper members C and C '(in FIG. 1, the clamper member C'
Are not shown because they are located on the back side of the clamper member C), and a pair of holes are provided at predetermined intervals to form a pair. Further, a cylindrical screw having a thread groove formed on the inner wall surface of the clamper member C ′, which is insertable into the pair of holes of the clamper member C when the screw is tightened, up to approximately the middle. The hole members NU and NU 'are attached respectively. At appropriate places on the bottom surface of the casing M, a pair of protrusions T and T'that can be sandwiched by the clamper members C and C'project. A pair of screw hole members N of the clamper member C ′ are provided on the protrusions T and T ′.
Holes through which U and NU 'can be inserted are provided respectively.
That is, the screw hole members NU and NU ′, which are respectively installed in the pair of holes of the clamper member C ′, make the holes of the pair of protrusions T and T ′ on the bottom surface of the casing M perpendicular to the plane of FIG. The clamper member C is inserted from below at a certain angle and is inserted up to about the middle of the pair of holes of the clamper member C. On the other hand, the clamper screw members CN and CN 'are inserted through the pair of holes of the clamper member C in the downward direction at an angle perpendicular to the paper surface of FIG. In addition, the power cable K passes through the clamper members C and C ′ through a place where it can be fastened and enters the inside of the casing M. Therefore, the power cable K is tightened by tightening the clamper members C and C ′ with the clamper screw members CN and CN ′. In this way, the base member S and the power cable K are joined and fixed to the casing M to form an integral structure.

A screw member M for fixing the power plug of FIG.
The N, MN ', the clamper screw members CN, CN' and the screw hole members NU, NU 'are made of metal in order to enhance the mechanical strength and solidity of the power plug. That is, this screw member MN, MN ', clamper screw member CN, CN'
The screw hole members NU and NU 'are conductors and may be made of any material having conductivity, such as conductive plastic. The screw members MN, MN 'and the clamper screw members CN, CN'
The screw hole members NU and NU 'are preferably made of the same material, but they are not necessarily the same material.

The line members L1, L2, L shown in FIG.
Reference numerals 1'and L2 'denote conductors that connect the screw members MN and MN' and the screw hole members NU and NU 'in an electrically floating state to the ground pin G or the connection mechanism portion SG at appropriate positions.

The line members L1 and L1 'are connected to the ground pin G or the connection mechanism portion SG thereof at appropriate points, penetrate the inside of the base member S from the connection point with the ground pin G or the connection mechanism portion SG thereof, and are screw members MN. , MN ′, respectively. This line member L1, L1 '
2 is a cross-sectional view of the vicinity of the bottom of the base member S of the power plug of FIG. 1, viewed from the power cable K side (mainly showing an electrical connection path between the metal screw and the ground pin G). As shown in FIG. 3)), in order to avoid electrical interference with the pair of terminal blades B, B ′, which are current-carrying parts, and their connecting mechanism portions SB, SB ′, the terminal blades B, B ′ are provided. Both of them have a substantially M-shape inside the base member S along the outer surface of the base member S so as to be separated from the base member S as much as possible.

The line members L2 and L2 'are screw members M.
N, MN 'are respectively connected to appropriate places, and screw members MN, M
It penetrates through the inside of the base member S from the connection point with N ′, and advances into the inside of the casing M from an appropriate point on the side surface portion of the base member S. Line members L2, L that have entered the casing M
2'is supported by a supporting portion provided on the inner side surface inside the casing M, and is installed substantially parallel to the conducting portion. Then, the line members L2 and L2 'penetrate through holes provided at appropriate positions on the bottom surface of the casing M, and the appropriate positions of the screw hole members NU and NU' (the screw hole members NU and NU 'and the clamper screw member CN, Since both of CN 'are joined when the power cable K is fastened to the body, the line members L2, L2'
May be connected to appropriate portions of the clamper screw members CN and CN ').

The line members L1, L2, L1 ', L
2'can also be a single member of the line members L1, L2, L1 ', L2', and the line member L1,
L2 and L1 ', L2' can be distributed, or L1 and L1 'can be made into one member and L2 and L2' can be made into an independent member, respectively. As described above, the ground pin G or its connecting mechanism SG, the screw members MN, MN ', the screw hole members NU, NU' (clamper screw members CN, C).
Any combination can be implemented as long as it is arranged to connect to N ′).

The line members L1, L2, L1 ', L
The material of 2'may be any material as long as it has conductivity, and examples thereof include metal and conductive plastic. In addition, the line members L1, L2, L1 ′,
L2 ′ is preferably made of the same material, but is not necessarily the same material.

The line members L1, L2, L1 ', L
2'is not limited to a linear shape, but may be implemented in a plate shape, a foil shape, or the like.

The line members L1, L2, L
1'and L2 'are the ground pin G or its connecting mechanism SG, screw members MN, MN', screw hole portions NU, N as described above.
Any form may be used as long as it can be connected to U ′ (clamper screw members CN, CN ′). Further, the line members L1, L2, L1 ′, L2 ′ are previously provided with the screw members M.
N, MN ', screw hole members NU, NU' (clamper screw members CN, CN ') may not be connected. In this case, if the power plug is connected to the screw members MN and MN ′ and the screw hole members NU and NU ′ (clamper screw members CN and CN ′) when the power plug is formed by the above members. good. That is, when the power plug of FIG. 1 is connected to an AC power source, the line members L1, L2, L
1'and L2 'are earth pins G or their connecting mechanism S
G to screw member MN, MN ', screw hole member NU, NU'
It is a conductive line member for conducting the (clamper screw members CN, CN ').

The base member S, the casing M, and the clamper members C and C'are all made of non-conductor, and examples thereof include plastics. It may also be formed of a conductor such as metal or conductive plastic.

FIG. 3 is a schematic diagram of a power plug connectable to an AC power source, in which the same reference numerals as those in FIG. 1 indicate the same functional parts (when different functions are described, the fact is described). 4 is a cross-sectional view of the base member S near the bottom and is viewed from the power cable K side. FIG. 5 is a cross-sectional view of the casing M near the bottom and is viewed from the power cable K side. FIG. 4 is a diagram (mainly showing an electrical connection path between the metal screw and the ground pin G).

Unlike the power plug shown in FIG. 1, the power plug shown in FIG. 3 has clamper members C and C'held inside a casing M. At an appropriate place on the side surface of the casing M, that is, on the side surface near the bottom, the screw member M is perpendicular to the straight line connecting the heads of the screw members MN and MN ′.
In the direction perpendicular to the length direction of N and MN ′ (in FIG. 3, shown on the left side of the casing M), the recesses MO and MO ′ form a pair with a predetermined gap. (These are provided so that the heads of the clamper screw members CN and CN ′ do not protrude from the side surface of the casing M). Clamper screw member CN, C
N'is inserted into the screw insertion holes (not shown) provided in the recesses MO and MO ', respectively, in parallel to the straight line connecting the heads of the screw members MN and MN'. The clamper screw members CN and CN 'are inserted into a pair of screw holes CNA and CNA' provided at appropriate positions of the clamper member C'and a pair of screws provided at appropriate positions inside the casing M. The tip ends are supported by the support recesses CNO and CNO ′. Further, as shown in FIG. 5, the clamper member C ′ is arranged in the direction in which the clamper member C is installed when the clamper screw members CN and CN ′ are screwed.
Operated (the clamper member C is the casing M)
It is fixed inside. Further, since the screw holes CNA and CNA ′ of the clamper member C ′ are provided with screw grooves,
The clamper screw members CN and CN 'are installed such that they can be moved up and down in the length direction of the clamper screw members CN and CN' by tightening or loosening them. The power cable K enters the inside of the casing M through an opening provided at an appropriate position on the bottom surface of the casing M, and
The connection mechanism portion S held inside the base member S holds the conductors that pass through and hold the clamper members C and C ′ inside.
B, SB ', and SG are connected. Then, the power cable K is tightened to the clamper members C and C ′ by tightening the clamper screw members CN and CN ′.

The line member L21 shown in FIGS.
L22 and P22 shown in FIGS. 3 and 5 are both conductors and are made of metal. The material may be any material as long as it has conductivity, and examples thereof include conductive plastic. The line members L21, L22, P22 are preferably made of the same material, but they are not necessarily the same material.

The line member L21 is located inside the base member S, that is, at a suitable position near the bottom and the bottom, and is held by the base member S. Both ends of the line member L21 are connected to appropriate portions of the screw members MN and MN '. The line member L21 is connected to an appropriate portion of the connection mechanism portion SG of the ground pin G at the substantially central portion (not necessarily to the connection mechanism portion SG).
However, it may be connected to any place of the ground pin G. ) Is installed. In these connection modes, for example, both ends of the line member L21, which is a connection point with the screw members MN and MN ', are screw members MN and MN'.
It may be formed into a ring shape that can be inserted through the screw member, or the screw insertion holes SS of the base member S through which the screw members MN and MN ′ are inserted.
A part or the whole of SS ′ may be made of metal or may be plated to be connected to the line member L21. In that case, the screw insertion holes SS, SS 'are formed by the screw members MN, M.
N'is a hole through which the screw members MN and M can be inserted.
Elaborately processed to connect with N '. Further, a fin is provided at the connection point of the ground pin G of the line L21 with the connection mechanism portion SG, and the connection mechanism portion SG is provided with a fixing portion for the fin in advance so that the fin and the fixing portion are joined together. May be. Moreover, you may implement combining these connection modes. That is, these line member L21, screw members MN, MN ', and ground pin G
Each connection of (connection mechanism part SG) may be implemented in any connection mode.

As shown in FIG. 4, the former line member L21 has a pair of terminal blades B and B'of the base member S which is an energizing portion.
In order to avoid electrical interference with the base blade S, it is arranged at an appropriate position inside the base member S, apart from the terminal blades B and B ′, along the outer surface of the base member S. The line member L21 has a plate-like body in a substantially M-shape (for example, a punched body of a metal plate or a molded body of conductive plastic). Further, this mode may be linear or plated, and is not limited to the M-shape, but may be any mode.

In consideration of workability such as attachment of the line member L21 and the like to the base member S in the previous term, a lid-like body fixed to the bottom of the base member S by a fixing member such as a screw member is attached. Is also good. This lid-like body has a contact surface with the bottom surface of the base member S, which has the same area as the bottom surface of the base member S, and has the same diameter as the base member S. That is, the lid-like body may have a shape in which the bottom portion of the base member S is partly cut off, or the bottom portion of the base member S may be removable. When the bottom of the base member S is a removable lid, the lid of the bottom of the base S can hold the line member L21 on the contact surface with the main body of the base S.
It has a large groove, and the line member L21 is held in the large groove. Further, the lid-like body has screw insertion holes SS, S
Similar to S ′, a pair of insertion holes for inserting the screw members MN and MN ′ are also provided. Also, as specified in the previous example,
Even in this case, the line member L21 has the screw member M.
It is installed so that it can be connected to N, MN ', and the ground pin G. In addition, a conductive material such as metal is used for a fixing member such as a screw member for fixing the lid-shaped body to the base member S. Then, the line member L21 is connected to this screw member. The connection location may be any connection mode as long as the line member L21 can be connected to the fixing member such as the screw member.

The line member L22 shown in FIG. 3 is held inside the casing M, and both ends thereof are connected to the tip end of the screw member MN and the approximate center of the line member P22. That is, the line member L22 is the screw member M.
As shown in FIG. 5, the screw member MN has a linear shape extending from the connection point with N to the connection point with the approximate center of the line member P22 in the length direction of the screw member MN. Further, the line member L22 may be, for example, a spring-shaped body. In that case, in the length direction of the screw member MN,
The screw hole NA of the casing M is extended to approximately the center of the line member P22. The line member L22 is held inside the extended screw hole NA so as to have a degree of freedom of expansion and contraction in the length direction of the screw hole, and when the screw member MN is tightened with the screw member MN, Line member P22
Connect to be compressed. The line member L22 may have any form, including such an example,
In addition to the line-shaped body, a plate-shaped body, a plate-shaped body, etc. may be mentioned.

The line member P22 shown in FIG.
In order to avoid electric interference with the power cable K, which is held inside the casing M and is a current-carrying part,
The plate-like body is formed in a generally convex shape (with the connection point with the line member L22 as the apex) along the side surface of the casing M, and is installed inside the casing M. Line member P
22 may have an arcuate shape, for example, along the side surface of the casing M, or may have any shape. Also,
The line member P22 penetrates an appropriate portion of the casing M,
Both ends thereof are exposed to the outside of the casing M by the recesses MO and MO ′ of the casing M. The line member P22 is connected to the front end of the line member L22 at a substantially central portion. A fin is provided in the approximately central portion of the line member L22 so as to easily contact the tip end portion of the line member L22, and has any shape as long as it can be connected to the tip end portion of the line member L22. Is also good. Further, the line member P22 is connected to the clamper screw members CN and CN 'at both ends thereof. Both ends thereof are sandwiched between the heads of the clamper screw members CN, CN ′ and the bottoms of the recesses MO, MO ′ of the casing M when the clamper screw members CN, CN ′ are screwed, so that the clamper screw members CN, It is connected to the appropriate part of CN '. The shape of both ends thereof is a ring shape through which the clamper screw members CN and CN 'can be inserted, and the shape is any shape as long as it can be connected to the clamper screw members CN and CN'. Good. In addition, both ends of the line member P22 may not be exposed to the outside of the casing M, and may be connected to the clamper screw members CN and CN ′ inside the casing M. That is, the line member P22 may have any form as long as it can be connected to the line member L22 and the clamper screw members CN and CN '.

The line members L21, L22, P22
Connection mechanism part SG (ground pin G), screw member MN,
As described above, the MN 'and the clamper screw members CN, CN' may be connected in any manner, and the line members L21, L22, P22 may be in any form. Further, the connection may be made when the power plug of FIG. 3 is formed by the above-mentioned members.
That is, when the power plug of FIG. 3 is connected to the AC power source, each of the line members L21, L22, and P22 is connected to the connection mechanism portion SG (ground pin G), and the screw members MN and MN ′,
This is a conductive line member that conducts the clamper screw members CN and CN '(or the same can be said if another fixing member having conductivity is used in the power plug of FIG. 3).

FIG. 6 is an external view of a three-core power plug which can be connected to an AC power supply having a shape significantly different from that of FIG. 1, and FIG. 7 is a development view thereof. (Mainly metal screw and ground pin G3
It is a figure which shows the electrical connection path with. )

The power plug shown in FIG. 6 has a substantially housing-like appearance. The base member S3 is a pair of terminal blades B3, B which are electric connection terminal members connectable to an AC power source.
3'and the ground pin G3 are held, and these terminal blades B3, B3 'and the ground pin G3 are attached to the top surface M3C.
To the outside of the base member S3. Connection working part BR
1, BR1 'connects the base member S3 and the side member M3A,
The connection operating parts BR2 and BR2 'are composed of a base member S3 and a side member M.
It is a connection operating unit that connects 3B. Side members M3A, M
3B are bottom surface portions M3Da and M3 shown in FIG. 7, respectively.
Db, and connection operating units BR1, BR1 ', BR2, B
It can be opened and closed via R2 ', and in the closed state, as shown in FIG.
A casing M3 having the appearance is constructed (the casing M3 is composed of the top surface portion M3C of the base member S and the side surfaces and bottom surface portions M3Da, M3Db of the side surface members M3A, M3B).

The power cable K3 shown in FIG. 6 enters the inside of the casing M3 through an opening provided at an appropriate location on the bottom surface (M3Da, M3Db) of the casing M3, and is connected to the AC power source provided on the base member S3. Connection mechanism parts SB3, SB3 ', SG3 including the exposed ends of the pair of terminal blades B3, B3' and the ground pin G3 in the direction opposite to the connection side.
The conductors to be held are bonded to each other. In the side surface member M3A, that is, in the longitudinal direction of the terminal blades B3, B3 ′ and the ground pin G3, at a proper position of the side surface member M3A, that is, rearward, near the bottom surface portion, and one side surface portion AS which is one side surface portion of the side surface member M3A. In the vertical direction, screw hole portions M3AN and M3AN 'are provided so as to form a pair with a predetermined interval.
Further, inside the M3B, screw hole portions M3BN and M3BN 'for receiving the tip end portions of the screw members N3 and N3' inserted into the screw hole portions M3AN and M3AN are provided. The power supply cable K3 includes support fin members F and F'installed at appropriate locations on the inner side portions of the side surface members M3A and M3B so as to project from at least one inner side surface and form a pair, and a bottom surface portion of the casing M3. (M3Da, M3
Positioning is performed by the opening of Db). That is, the power cable K3 is fastened by closing the side members M3A and M3B, and the side members M3A and M3B are fixed by being screwed by the screw members N3 and N3 ′.

The screw members N3 and N3 'are made of metal, that is, conductors. Also, the screw members N3, N
3'may be any material as long as it has conductivity, and examples thereof include conductive plastic.

The line member L shown in FIG. 7 is a conductor and is a conductor for conducting the screw members N3, N3 'in the floating state to the connecting mechanism portion SG3 of the ground pin G3, and has conductivity. Any material will do,
Examples include metal and conductive plastic.

The line member L is installed at an appropriate place on the inner surface of the side member M3B so as to form a line connecting the screw hole portions M3BN and M3BN '(hereinafter, this line is referred to as N line for convenience), Both end portions of the N line are inserted into the screw hole portions M3BN, M3BN 'from appropriate portions of the screw hole portions M3BN, M3BN', and the screw members N3, N
It is installed so as to be connected to 3 '. Further, the line member L extends from the approximate center of the N line in a direction perpendicular to the N line and in the screw hole portions M3BN and M3B.
It extends so as to form a line (this line is referred to as G line for convenience) in the direction of the base member S3, which is a direction perpendicular to the inserting direction of the screw members N3 and N3 'to be inserted into N'. Part is LS). In the line member L, the side surface members M3A and M3B have screw hole portions M3BN and M3BN '.
It is arranged so that the end portion LS of the connection mechanism portion SG3 comes into contact with the connection mechanism portion SG3 when it is screwed and fixed in the closed state.
The line member L is also installed on the inner side surface of the side surface member M3B in the G line. Therefore, the line member L has the G line penetrating the support fin member F ′ protruding from the inner surface of the side surface member M3B, and similarly, when there is a member installed in the side surface member M3B, The G line is installed so as to pass through the respective side members M3B so as to extend along the inner side surface of the side members M3B. Further, both ends of the N line of the line member L may be a ring-shaped body through which the screw members N and N ′ can be inserted,
The outermost end of the G line may also be projected so as to have an angle in the direction of the base member S3 with respect to the inner surface on which it is installed so that it can be easily connected to the connection mechanism part SG3. That is, the screw members N and N'of the line member L and the connection mechanism portion SG
Any connection mode may be applied to the connection point with the connection point 3. When FIG. 7 is viewed with the bottom surface M3Db facing upward, as shown in FIG. 7, the plate-like body is in a substantially T-shaped state (for example, punched body of metal plate, molded body of conductive plastic). Is done. Further, the form thereof may be linear or plated, and is not limited to the T-shape, but may be any form. For example, screw hole portions M3BN, M3BN '
Of the screw members N and N ′ are connected at appropriate points to the inner surface of the side surface member M3B, and two lines parallel to the G line (for convenience, G
2, G2 'line) and a line parallel to the previous N line (for convenience, referred to as N2 line) is the N line.
Contact the connection mechanism SG3 at the approximate center of the two lines,
You may exhibit the parenthesis aspect which connects. Also, not necessarily
It does not need to be implemented along the inner surface of M3B.
That is, the line member L may be implemented in any form as long as it is connected to the screw members N and N ′ and the connection mechanism portion SG3. The connection may be made when the power plug of FIG. 6 is formed by the above members. That is,
The line member L is a conductive line member that conducts the screw members N and N ′ to the connection mechanism portion SG3 when the power plug of FIG. 6 is connected to the AC power source.

The above-described embodiment of the line member for connecting each of the floating screw members (conductors) in the power plug to the ground pin or the connecting mechanism portion thereof for conduction can be applied to other electric connecting members. For example, an outlet, a table tap, or the like to which the above power plug is connected may be used. In particular, when each of the above power plugs is a male, a female plug (hereinafter referred to as an inlet plug) similar to the above power plug is attached to the opposite side via the above power cable K (K3). May have been. This inlet plug is designed so that each of the power plugs described above has a pair of terminal blades for connecting to an AC power source and a ground pin, but instead receives the terminal blades and ground pins (terminals) installed in equipment, etc. It is an inlet plug that is provided with respective receptacles that are inserted into and connected to. Although the shape of the receiving portion is various, the other structure is almost the same as each of the power plugs described above. Therefore, if a floating screw member (conductor) is used for the inlet plug, each of the above Similar to the power plug (male), even if a conductive line member is installed to connect the screw member to the ground pin receiving portion or the connecting mechanism portion (joins the ground pin receiving portion and the conductor held by the power cable). good.

[0036]

As described in detail above, according to the present invention,
Even if a conductive member such as a metal screw is used as an electric connection member such as a power plug in order to obtain mechanical strength and robustness, the electrically floating state of those members is eliminated, and the electric properties of those members are eliminated. It is possible to suppress the noise generated due to the static floating state. Further, even if a material having electrostatic properties such as plastic is used for a member such as a casing, since the static electricity is released to the ground through the screw member or the like, noise caused by the static electricity is reduced. That is, it is possible to supply a stable power source with less noise to a device or the like that uses the electrical connection member such as the power plug of the present invention. In particular, when these electrical connection members such as a power plug are used in an audio device, the effect is great and the sound quality of the sound output by the audio device can be dramatically improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a power plug according to an embodiment of the present invention (a diagram mainly showing an electrical connection path between a metal screw and a ground pin G).

FIG. 2 is a base member S of the power plug of FIG. 1 according to one embodiment.
FIG. 4 is a cross-sectional view of the vicinity of the bottom of FIG. 1 as viewed from the power cable K side (mainly showing an electrical connection path between the metal screw and the ground pin G).

3 is a schematic view of a power plug showing the same function part as that of FIG. 1 according to one embodiment of the present invention (mainly showing an electrical connection path between a metal screw and a ground pin G); It is a figure).

4 is a base member S of the power plug of FIG. 3 according to one embodiment.
FIG. 4 is a cross-sectional view of the vicinity of the bottom of FIG. 1 as viewed from the power cable K side (mainly showing the electrical connection path between the metal screw and the ground pin G)).

5 is a cross-sectional view of the vicinity of the bottom of the casing M of the power plug of FIG. 3 according to one embodiment, as seen from the power cable K side (mainly the electrical connection between the metal screw and the ground pin G). It is a figure which shows a connection path).

FIG. 6 is an external view of a power plug according to an embodiment of the present invention.

FIG. 7 is a development view of the power plug of FIG. 7 according to one embodiment (mainly showing an electrical connection path between a metal screw and a ground pin G3).

[Explanation of symbols]

M casing S base member K power cable B, B'terminal blade G Earthpin SB, SB 'Connection blades for terminal blades B, B' SG Earth pin G connection mechanism C, C'clamper member SC Top member S base member SO, SO 'Recessed portion on top surface of base member S SS, SS 'base member S screw insertion hole MN, MN 'screw member NA, NA 'screw member MN, screw hole for MN' MHS support member CN, CN 'Clamper screw member NU, NU 'Screw hole member for clamper screw T, T'Projection on bottom of casing M L1, L1 ', L2, L2' line members

Claims (5)

[Claims] 1. An electrical connection member having a floating metal portion, wherein the floating metal portion is grounded. 2. An electric connecting member, wherein a line for grounding the floating metal portion is separated from the energizing terminal portion of the electric connecting member and is substantially parallel to the energizing terminal portion. 3. The electrical connecting member, wherein the electrical connecting member is an outlet installed in a commercial AC power source and has or does not have a ground terminal portion. 4. The electric connecting member, wherein the electric connecting member is a power plug that can be connected to a commercial AC power outlet and a table tap, and has or does not have a ground terminal portion. 5. The electric connecting member, wherein the electric connecting member is a connecting terminal portion of an electric signal cable.