JPH0917469A - Mounting member of earth, and earth terminal cover - Google Patents

Abstract

PURPOSE: To provide a mounting member of earth in which a coating can be easily shaved to provide a satisfactory earth in the mounting of an earth terminal from the coating, the application of an earth mark and the security of its display place are facilitated, and the position of the earth and the visual confirmation of the earth mark are also facilitated. CONSTITUTION: When an earth terminal is screwed to the cage body of an electric equipment, a mounting member is interposed between the earth terminal and the cage body and nipped by screwing. This mounting member 100 of earth terminal is formed of a washer part 1 consisting of a conductor and having a driver groove 5 on an upper surface 2 and a file part on a bottom surface 3, and has a cover part 8 on the upper surface 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member for attaching a ground to a housing or a chassis of a switchboard, an electric device, or the like (hereinafter, referred to as a "housing"). The present invention relates to a mounting member for performing a ground function without interfering with conductivity even when a terminal mounting surface on a housing side is painted, and a ground terminal cover to be mounted at a mounting position of a ground terminal.

[0002]

2. Description of the Related Art Switchboards and various types of electric equipment are provided with a ground for connecting a part of the equipment to the ground in order to prevent electric shock due to static electricity or electric leakage. For home appliances,
Usually, there is only one ground, and therefore there is only one ground terminal. However, many industrial electrical devices are large, so that the number of ground terminals is 20 to 3 per device.
As many as 0 places. These grounding terminals are usually mounted inside the housing of the device, but the door of the housing is often opened on a daily basis, and therefore, the inside is often painted. As shown in FIG. 12, a seal with an earth mark is attached near the ground terminal in order to clearly indicate the position of the terminal in accordance with the regulations for electric work.

[0003]

However, many of the coatings are insulative, which hinders grounding. Nevertheless, the inner surface of the screw hole on the housing side is a slightly exposed portion of the metal, so that it is energized and somehow the earth is working. However, the inner surface of the screw hole is often covered with paint, and there is a problem that a good ground cannot be obtained. And, since the earth leakage does not always occur, such a problem is not immediately surfaced as an accident, but has been regarded as a serious problem, possibly including the possibility of the accident. or,
Even if a certain degree of conductivity is obtained, it is said that the earth having no electrical resistance has a higher grounding performance, so that the electrical resistance due to the coating of the housing is very inconvenient. In addition, it is required by the electrical work regulations to attach a ground seal near the terminals. However, if the wiring is crowded, it is difficult to secure a place to apply the sticker, and the sticker is visible. Was difficult and I was sick.

[0004] In view of the above problems, an object of the present invention is to mount a ground terminal on a paint.
A ground terminal that can be easily ground to obtain a good ground, and that a ground mark is provided and that a display place can be easily secured, and that the ground position and the ground mark can be easily recognized. The purpose of the present invention is to provide a mounting member.

[0005]

Means for Solving the Problems To solve the above-mentioned problems and to achieve the object, means of the present invention according to claim 1 is as follows.
"When screwing the ground terminal to the housing of electrical equipment,
A mounting member for the ground terminal, which is interposed between the ground terminal and the housing and clamped by screw tightening. The mounting member is made of a conductor, has a driver groove provided on an upper surface, and has a filer portion provided on a bottom surface. "It consists of" as its gist.

[0006] The "washer portion" may be disk-shaped or square-plate-shaped, and may not be such a plate-like material. May be something. The “driver groove” is applicable to a plus driver, a minus driver, and the like. The groove may be provided in a through hole of the washer portion, but is not particularly limited to this. Also, this groove is preferably a groove formed so that the washer can be pressed strongly against the housing with a screwdriver, and if it is a groove for a Phillips screwdriver, the tip of the driver will be inserted and stopped in the through hole of the washer What is necessary is just to form in the cross-shaped groove | channel of a degree. Further, a groove for a flathead screwdriver may be formed as a bottomed groove having a -shape. In addition, any groove may be used as long as the same can be applied to rotate the washer while pushing it.
The “file part” may be of any type as long as the paint can be scraped off.

The invention according to a second aspect of the invention is based on the following feature: when a ground terminal is screwed to a housing or the like of an electric device, the ground terminal is interposed between the ground terminal and the housing and held by screwing; A terminal mounting member, a screw having an engagement groove in a shaft portion, a through hole of a screw made of a conductor and having a projection engaging with the engagement groove, and a file portion provided in a bottom surface And a washer portion provided with a filer portion that is formed by pressing the screw through the upper surface side and screwing the screw into the housing, thereby crushing the file eyes and making the filer substantially flush with the bottom surface. Was the gist.

[0008] "File eye" that constitutes the "file part"
Any material may be used as long as it satisfies that the paint can be scraped off and that it has a shape and hardness that can be sufficiently crushed by pressing with a screw to make the bottom substantially flush. For example, it may be a burr-like one or one having many small needle-like projections.

A third aspect of the present invention provides a method according to the second aspect, wherein the file portion is a file portion having a file-shaped claw-shaped file. Is the crushing of the file by bringing down the file's eyes to its pre-sharpened state. "

A fourth aspect of the present invention is based on the first to third aspects, and has a gist of "having a cover portion on the upper surface".

The "cover portion" may be any cover member as long as it covers the upper surface of the washer portion, but any cover member that covers the entire washer portion is preferable because it easily plays a "marking role" described later. . Further, if the color of the cover portion is made different from that of the surroundings of the mounting portion, the “marking role” is more easily fulfilled.
Furthermore, when the cover is molded with plastic, an earth mark may be integrally protruded or stamped,
Alternatively, the shape and size of the earth seal may be easily applied, or the earth mark may be easily printed.

According to a fifth aspect of the present invention, there is provided a grounding terminal cover for covering the terminal mounting portion when the grounding terminal is screwed to a housing of an electric device. It has a mounting means for mounting the cover part to the terminal portion ".

[0013]

The operation of the mounting member according to the present invention will be described with reference to how to use the mounting member. According to the first aspect of the present invention, the bottom surface of the mounting member is applied to the ground terminal mounting portion of the housing, the driver is further applied to the driver groove on the upper surface, and the mounting member is pressed against the housing together with the driver to rotate. Things. With this configuration, the paint on the housing can be removed by the file portion on the bottom surface. Therefore, the conductivity of the contact surface between the housing and the mounting member is increased. Next, if this mounting member is interposed between the housing and the ground terminal and the ground terminal is screwed, the conductivity of the ground terminal portion is increased.

According to a second aspect of the present invention, a screw having a through hole formed in the ground terminal and the mounting member is screwed into a screw hole for mounting the ground terminal in the housing. Then, the mounting member is turned together with the screw while the mounting member is pressed by the housing through the ground terminal by the head of the screw because the protrusion of the through hole is engaged with the engagement groove of the screw. . With this configuration, the paint on the housing is shaved by the file portion provided on the bottom surface, and the eyes of the file are pressed by the housing and crushed, so that the ground terminal is finally substantially flush with the bottom surface and attached. At this time, since the paint on the housing has been scraped off and the bottom surface is substantially flush with the housing and is pressed against the housing, the conductivity of the contact surface between the housing and the mounting member is increased. Conductivity increases. Also, the coating can be cut at the same time as the screw tightening work for attaching the ground terminal.

The invention according to claim 3 is substantially the same as the operation of claim 2, but when shaving the paint of the housing, the paint is shaved with a nail-shaped file, and at the same time, the file of the file is cut into the housing. , And the nails can be crushed by bringing the nail-shaped file down to the state before sharpening.

According to the fourth aspect of the present invention, the cover portion can be provided with an earth mark in advance. Along with this, if the conventional earth seal is used, it is difficult to reattach it when it is mistakenly applied. However, the earth terminal cover of the present application does not have such difficulty. Alternatively, if the ground terminal cover is not provided with a ground mark, a seal can be attached to the cover after installation. Further, since the cover itself functions as a mark of the position of the ground terminal, the ground mark can be easily recognized even in a place where the wiring is crowded as described above.

According to the fifth aspect of the present invention, the cover portion can be provided with an earth mark in advance. Along with this, if the conventional earth seal is used, it is difficult to reattach it when it is mistakenly applied. However, the earth terminal cover of the present application does not have such difficulty. Alternatively, if the ground terminal cover is not provided with a ground mark, a seal can be attached to the cover after installation. Further, since the cover itself functions as a mark of the position of the ground terminal, the ground mark can be easily recognized even in a place where the wiring is crowded as described above.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first embodiment is an embodiment of the "ground terminal mounting member according to the fourth aspect of the present invention." As shown in FIGS. 1 and 2, this mounting member is a ground terminal mounting member in which a plastic truncated cone-shaped cover portion 8 is mounted on a washer portion 1 having a through hole 6 formed in the center of a conductive disk. 100.

As shown in FIG. 1, the washer 1 has a cross-shaped driver groove 5 provided on the upper surface 2 so as to overlap the through hole 6. As shown in FIG. 2, the bottom surface 3 of the washer 1 is sanded over the entire surface to form a filed part 4. The cover 8 is joined to the washer 1 located on the lower surface of the truncated cone. In addition, one insertion port 12 for inserting a ground terminal is provided at an edge of the cover portion 8. Further, the cover 8 has a top surface of a truncated cone that forms a lid 9 and opens to a hinge, and when closed, is stopped by a locking piece (not shown). The lid 9 is printed with an earth mark 13 conforming to the regulations for electric work.

Next, the operation of mounting the ground terminal 30 using the mounting member 100 will be described. First, FIG. 3 (a)
As shown in FIG. 2, the lid 9 of the cover portion 8 is opened, and the mounting member 100 is attached to the housing while confirming that the through hole 6 of the washer portion 1 and the screw hole 21 of the housing 20 are superposed from the opening 11. Apply to 20. Next, a Phillips screwdriver is inserted through the opening 11 and applied to the cross-shaped driver groove 5 provided in the washer 1. Then, as shown in FIG. 3B, if this driver is rotated several times while strongly pressing the mounting member 100 against the housing 20 with a driver, the washer 1 is also rotated and the file on the bottom surface 3 is ground. The coating 22 can be shaved in the part 4. Moreover, in the case of a Phillips screwdriver, the sharp tip can be inserted into the screw hole 21 of the housing 20 through the washer 1 as shown in FIG. Can be done easily.

Then, as shown in FIG. 3 (c), the ground terminal 30 is inserted through the insertion opening of the mounting member 100, the screw 14 is inserted through the opening 11, and the ground terminal 3 is inserted.
The screw 14 is passed through the through holes 31 and 6 of the washer 1 and the washer 1. Then, the screw into which the ground terminal and the mounting member are inserted is inserted into the screw hole 21 of the housing 20, and the screw is tightened by a screwdriver which has previously been painted. Then, when the mounting of the ground terminal 30 by the mounting member 100 is completed, the lid 9 is finally closed as shown in FIG. 3D so that the printed ground mark 13 can be seen.

FIG. 5 shows another embodiment.
The cover part 8 forms a lid, and is an attachment member 100 formed so as to open to a hinge. That is, the cover 8
Is opened, the driver can be applied to the exposed driver groove 5 of the washer 1. Therefore, in the same manner as in the previous embodiment, if the driver is rotated several times while strongly pressing the mounting member 100 against the housing with a screwdriver, the coating can be cut off with the file portion 4 on the bottom surface 3 of the washer portion 1. Can be.
After that, a ground terminal may be attached in substantially the same manner as in the above embodiment. FIG. 6 shows another embodiment, in which the side of the cover 8 is opened so that the ground terminal can be attached from any direction.

The "mounting member for the ground terminal according to claim 4 quoting claim 1" is not limited to the above embodiment. The washer is not limited to the disk shape, but may be a square shape or another shape. Further, the file part of the washer part may be the entire surface or a partial surface of the bottom part of the washer part, and the sharpening may be such that the lower surface of the washer part is simply scratched. Further, the driver groove is not limited to two, that is, plus and minus. Any groove may be used as long as a screw driver can be fitted and the washer can be rotated.
The shape of the cover is not limited to a truncated cone, and may be cylindrical, hemispherical, or any other shape as long as the shape allows the screw head to protrude when mounted. The earth mark is not limited to the print, but may be a conventional earth seal. Further, if the cover is colored, it works as a mark.

The next embodiment is an embodiment of the "ground terminal mounting member according to the fourth aspect of the present invention." As shown in FIG. 7, the mounting member 100 includes a screw 14 having an engagement groove 17 formed in a shaft 16, a washer 1 that allows the screw to pass therethrough, and a cover 8 that covers the upper surface 2 of the washer. A mounting member 100 for the ground terminal 30 made of

The engaging groove 1 provided in the shaft portion 16 of the screw 14
Reference numeral 7 denotes one groove provided over the entire length of the shaft portion 16 in the longitudinal direction.

The washer portion 1 is made of a conductive disc, and the center of the disc has a convex portion 7 which engages with the engaging groove 17 of the shaft portion 16.
The through hole 6 of the screw 14 having a hole is provided. In addition, as shown in FIG. 8, the washer portion 1 includes a file portion 4 having filed eyes 4a punched in a claw shape from the top surface 2 side to the bottom surface 3 side to sandwich a through hole 6 and Be prepared for the location.
Further, since the file eye 4a is sharpened by punching, if it is pressed from the opposite direction to the punching direction, it can be crushed by falling down to the state before sharpening. The upper surface 2 is provided with a locking piece 2a for fitting the cover portion 8.

The cover 8 has a cylindrical shape whose one end is closed by plastic, and has a ring-shaped protrusion 8a provided on the inner peripheral surface thereof.
To fit into the locking piece 2a. Also, the cover part 8
Is printed with an earth mark 13 on the surface thereof.

The mounting member 100 configured as described above
Is mounted as follows. First, screw 14
The screw is made to penetrate through the through hole 31 of the ground terminal 30, and is then made to penetrate the mounting member 100 while engaging the protrusion 7 of the through hole 6 of the washer 1 with the engaging groove 17 of the screw. Then, the screw 14 in such a state as to pass through the ground terminal 30 and the mounting member 100 is inserted into the screw hole 21 of the housing, and the screw 14 is turned and tightened with a screwdriver. Then, since the protrusion 7 of the mounting member 100 is engaged with the engaging groove 17 of the screw 14, the mounting member is turned together with the screw while being pressed by the housing 20 through the ground terminal by the head 15 of the screw. You. By doing so, the coating 22 of the housing can be scraped with the nail-shaped file 4a formed by punching the washer 1 on the bottom 3. In addition, since the rotation direction of the washer and the pressing by the screw head are combined with each other, as shown by reference numeral A in FIG. Is returned to the position, and after all, file eyes 4a
Is crushed, and as shown in FIG. 9, the bottom surface of the washer portion is substantially flush, and is pressure-bonded to the housing whose paint has been cut off.

The "attachment member of the ground terminal according to the fourth aspect cited in the third aspect" is not limited to the above embodiment. By providing two convex portions and two engaging grooves for engaging with the convex portions, the rotation of the slope is smooth, and the number may be further increased. The number of file parts is not limited to two, but may be any number,
Further, the eyes of the file are not limited to the punched ones, and may be individually made with a sharpening tool from the bottom side. The cover portion may be integrally formed with the seat portion so as to move the lid as shown in the previous embodiment.

The next embodiment is an embodiment of the "earth terminal cover according to claim 5". This ground terminal cover 18
As shown in FIG. 10, the main body is a cylindrical cover 8 having one end closed with plastic. A fitting portion 10 fitted to the head 15 of the pan head is provided on the inner surface thereof at a position corresponding to the head 15 of the screw to which the ground terminal is attached.
Are provided as attachment means for attaching to terminal locations. In addition, as shown in FIG.
The earth mark 13 is integrally formed by projecting. Further, two ground insertion ports having different sizes are provided at the edge of the cover portion so that the ground cable can be selected according to the thickness of the ground cable. Such a ground terminal cover 18
Is aligned and pressed firmly against the pan head 15, the fitting portion 10 fits into the head of the screw and can be attached to the terminal.

The mounting means is not limited to the above example, but may be adhered, adhered or magnetically adhered to the mounting location, or the washer portion of the mounting member according to claim 4 may be omitted. .

Although common to all of the first to fifth aspects, the ground terminal provided in the cover portion may have any number of insertion ports, and if a large number are provided in advance, the ground terminal can be mounted from any direction.

[0033]

As described above, according to the mounting member of the first aspect of the present invention, if the washer is pressed against the housing with the screwdriver and the driver is turned, the insulating file is formed on the file on the bottom surface. You can scrape the paint. Therefore, the conductivity of the contact surface between the housing and the mounting member is increased, and the performance of the ground is also enhanced, so that the static electricity and electric leakage generated in the switchboard and the electric equipment can be reliably released, and the effect of preventing accidents due to electric shock is achieved. is there.
In addition, even when the number of ground terminals is as large as 2 to 30 places, the work is not particularly increased, and only the tool is required as in the conventional case, so that the workability is excellent.

According to the mounting member of the second aspect of the present invention,
The paint on the housing can be shaved at the same time as the screw tightening for attaching the ground terminal, and the work efficiency increases. Further, similarly to the effect of the first aspect, the conductivity of the contact surface between the housing and the mounting member is increased, and the performance of the ground is also enhanced, so that static electricity and electric leakage generated in the switchboard and the electric equipment can be reliably released. It has the effect of preventing accidents due to electric shock. Also, the number of ground terminals is 2-3
Even in the case where there are as many as 0 places, the work is not particularly increased, and only the driver is required as in the conventional case, so that the workability is excellent.

According to the mounting member of the invention described in claim 3,
In addition to the effect of the second aspect, the sharpening of the file part is easy, and when the screw is tightened, the file eye is securely knocked down and the bottom surface is made uniform, so that the contact between the washer part and the housing is achieved. And the conductivity of the contact surface is increased.

According to the mounting member of the invention described in claim 4,
In addition to the effects of claims 1 to 3, it is possible to provide an earth mark on the cover in advance. As a result, the cover part can also serve as a conventional earth seal, so that the work of attaching the earth seal during the mounting operation can be omitted. Along with this, with the conventional earth seal, it was difficult to re-attach when mistakenly affixed, but the earth terminal cover of the present application does not have such difficulties. There is no need for alignment. Of course, even if the cover is not covered by the earth mark, the seal can be attached to the ground terminal cover after installation, and it is to be attached directly above the terminal, even in places where wiring is crowded. There is no need to secure a place to attach. Further, since the cover itself functions as a mark of the position of the ground terminal, the ground mark can be easily recognized even in a place where the wiring is crowded in the same manner as described above. Also useful for maintenance.

According to the ground terminal cover of the fifth aspect, the same effect as the effect of the cover according to the fourth aspect can be obtained. That is, the ground mark can be preliminarily provided on the cover portion of the ground terminal cover. As a result, the cover part can also serve as a conventional earth seal, so that the work of attaching the earth seal during the mounting operation can be omitted. Along with this, with the conventional earth seal, it was difficult to re-attach when mistakenly affixed, but the earth terminal cover of the present application does not have such difficulties. There is no need for alignment. Of course, even if the cover is not covered by the earth mark, the seal can be attached to the ground terminal cover after installation, and it is to be attached directly above the terminal, even in places where wiring is crowded. There is no need to secure a place to attach. Further, since the cover itself functions as a mark of the position of the ground terminal, the ground mark can be easily recognized even in a place where the wiring is crowded in the same manner as described above. Also useful for maintenance. Further, even in existing electric equipment, this cover can be attached later to the already installed earth terminal.

[Brief description of the drawings]

FIG. 1 is a cutaway perspective view of a mounting member according to an embodiment of claim 4 in which claim 1 is cited.

FIG. 2 is a perspective view of the mounting member of FIG. 1 as viewed from the bottom side.

FIG. 3 is a view showing a state in which a ground terminal is mounted using the mounting member of FIG. 1;

FIG. 4 is a diagram showing a manner in which a Phillips screwdriver is supported by screw holes in a housing;

FIG. 5 is a perspective view of another mounting member.

FIG. 6 is a perspective view of still another attachment member.

FIG. 7 is an exploded perspective view of a mounting member according to the fourth embodiment cited in the third embodiment.

8 is a perspective view of only the washer of the attachment member of FIG. 7 as viewed from the bottom surface side.

FIG. 9 is a perspective view showing a state in which a ground terminal is mounted using the mounting member of FIG. 7;

FIG. 10 is a perspective view showing a state in which the ground terminal cover according to the fifth embodiment is attached.

11 is a perspective view showing a state in which the ground terminal cover of FIG. 10 is attached.

FIG. 12 is a perspective view showing a state of a conventional earth attachment.

[Explanation of reference numerals] 100 mounting member 1 washer part 2 upper surface 3 bottom surface 4 file part 4a file eyes 5 driver groove 6 through hole 7 convex part 8 cover part 8a ridge 9 lid 10 fitting part 11 opening as an attaching means 12 Insertion hole 13 Ground mark 14 Screw 15 Head 16 Shaft 17 Engagement groove 18 Ground terminal cover 20 Housing 21 Screw hole 22 Painting 30 Ground terminal 31 Through hole

Claims (5)

[Claims] 1. A ground terminal mounting member which is interposed between the ground terminal and the housing and screwed by screw tightening when the ground terminal is screwed to a housing or the like of an electric device, the conductor being a conductor. A ground terminal mounting member comprising a washer portion provided with a driver groove on an upper surface and a file portion on a bottom surface. 2. A mounting member for an earth terminal, which is interposed between the earth terminal and the housing and screwed by screw tightening when screwing the earth terminal to a housing or the like of an electric device. A screw provided with an engaging groove, a through hole of a screw made of a conductor, having a convex portion engaging with the engaging groove, and a file portion provided on a bottom surface, wherein the screw is formed from an upper surface side. A mounting member for a ground terminal, comprising: a washer portion provided with a file portion which is crushed by a pressure when the file is penetrated and screwed into the housing and the file is crushed to make the bottom surface substantially flush. 3. The file part is a file part having a file-shaped file eye, and the crushing is a crushing by bringing down the file-shaped file of the claw to a state before setting. The mounting member for a ground terminal according to claim 2, wherein: 4. The ground terminal mounting member according to claim 1, further comprising a cover on the upper surface. 5. A ground terminal cover for covering the terminal mounting portion when screwing the ground terminal to a housing of an electric device, the cover portion and mounting means for mounting the cover portion to the terminal portion. Ground terminal cover characterized by having