JPH05307979A - Terminal block - Google Patents

Abstract

(57) [Summary] [Construction] A polygonal plate-shaped deformable earth terminal 4 is provided on the mounting surface 2 of the terminal block body 1 so as to project therefrom. Locking portions 11, 11 are provided on the mounting surface 2 in the vicinity of the ground terminal 4. Attached surface 13
Positioning parts 14 and 14 are drilled in. The ground hole 16 is bored in the mounting surface 13 so that the ground terminal 4 and the ground hole 16 are relatively displaced at an angle θ. Ground terminal 4 to ground hole
The terminal block body 1 is inserted into the terminal 16, and the locking portions 11 and 11 are positioned and locked to the positioning portions 14 and 14 to temporarily fix the terminal block body 1 to the mounting surface 13. The ground terminal 4 abuts around the ground hole 16 and is twisted and deformed. Fasten the terminal block body 1 to the mounting surface 13 with screws 17. [Effect] The grounding terminal 4 can be surely brought into contact with the grounding hole 16, and the electrical connection can be easily and surely obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block which can be easily grounded.

[0002]

2. Description of the Related Art A conventional terminal block is, for example, Jpn.
As described in JP-A-5253 and JP-A-1-122580, the terminal block body is attached to the mounting surface by screwing, and the screw is a conductive member between the ground terminal inside the terminal block body and the mounting surface. There is known a structure for making electrical connection by acting as.

Alternatively, for example, Japanese Utility Model Publication No. 57-37417
As described in Japanese Utility Model Publication No. 61-34700 and Japanese Utility Model Publication No. 61-34700, the terminal block body is attached to the mounting surface by screwing, and the earth terminal provided to project on the terminal block body by this screw tightening force is mounted. 2. Description of the Related Art There is known a structure in which an electrical connection is made by pressing an opening hole provided on a mounting surface or a mounted surface into contact with each other.

Further, as described in, for example, Japanese Utility Model Laid-Open No. 2-136974, a terminal block body is mounted on a mounting surface by a lever or the like, and an earth terminal is provided with elasticity in a projecting direction projecting from the terminal block body. Is inserted into the long hole-shaped grounding hole on the surface to be attached and press-contacted. However, there is known a structure in which this displacement is absorbed by the elasticity imparted to the ground terminal. As means for imparting elasticity to the earth terminal, the earth terminal is made of an elastic material and is bent in a substantially Z shape, or a structure in which a compression coil spring is attached to the earth terminal is used. ..

[0005]

However, the above-mentioned Japanese Utility Model Publication No. 60-15253 and Japanese Unexamined Patent Publication No. 1-122580.
In the structure described in the publication, etc., when the mounting surface is painted and the screws are tightened from the mounting surface side, the coating layer applied to the mounting surface for electrical connection is applied to the seat surface of the screw head. However, even if a protrusion is provided on the seat surface of the screw head for the purpose of facilitating this scraping, the size of the tightening torque and the coating layer should be It is necessary to accurately adjust and manage the thickness of the.

Further, in the structures described in Japanese Utility Model Publication No. 57-37417, Japanese Utility Model Publication No. 61-34700, etc.,
If the mounting surface is a thin plate, the mounting surface itself will be distorted and deformed in the tightening direction due to screw tightening, and the contact pressure on the mounting surface of the ground terminal will vary, resulting in incomplete contact and electrical connection failure. May be complete.

Further, in the structure described in Japanese Utility Model Laid-Open No. 2-136974, elasticity is imparted to the ground terminal for the purpose of completely contacting the ground terminal and the ground hole.
In order to impart elasticity to the ground terminal, there is a problem that the ground terminal itself must have a complicated structure or an extra member such as a compression coil spring must be used.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a terminal block in which electrical connection can be easily and reliably obtained.

[0009]

A terminal block according to the present invention is inserted into a terminal block main body and a long-hole-like ground hole formed on a mounting surface, and is deformed to be thinner than the width of the ground hole in the width direction. A grounding terminal provided in a projecting manner on the plate-like terminal block body, and a locking provided on the terminal block body that is positioned and locked by a positioning portion formed in the vicinity of the grounding hole of the mounting surface. And the grounding hole and the grounding terminal are relatively displaced at a predetermined angle when the locking part of the terminal block body is positioned and locked to the positioning part.

[0010]

According to the terminal block of the present invention, the elongated ground hole formed on the mounting surface and the deformable plate-shaped ground terminal projecting from the terminal block body are relatively displaced at a predetermined angle. As a result, when the ground terminal is inserted into the ground hole, the ground terminal comes into contact with the periphery of the ground hole and is twisted and deformed to make sure contact with the periphery of the ground hole. Since the positioning portion of the mounting surface prevents the rotation, the electric connection can be easily and surely obtained by inserting the ground terminal into the ground hole and positioning and locking the locking portion to the positioning portion.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the terminal block of the present invention will be described below with reference to FIGS.

In FIG. 1, 1 is a box-shaped terminal block body,
A terminal (not shown) is provided on the surface, and this terminal block body 1
A grounding terminal 4 made of a plate-like deformable material is projected at the center of the mounting surface 2 of. Further, the projecting ground terminal 4 has side surface portions 5 and 5 on both sides, a ground tip portion 6 is formed at the tip, and ground taper portions 7 and 7 having a taper with respect to the ground tip portion 6 are formed. Further, side portions 8 are formed perpendicularly to the mounting surface 2.

Further, in the vicinity of the ground mounting hole 3 of the mounting surface 2, frustoconical locking portions 11, 11 are provided at positions extending from both ends of the ground mounting hole 3 in the longitudinal direction. , From the center of the ground mounting hole 3 in the longitudinal direction to the ground mounting hole 3
Mounting hole for screw mounting at a position extending vertically to the longitudinal direction of
12 are drilled. The heights of the locking portions 11 and 11 are formed lower than the height of the protruding ground terminal 4.

Reference numeral 13 denotes a surface to be mounted such as a substrate, which is the surface to be mounted.
The mounting surface 2 of the terminal block body 1 is attached to 13 and the locking portion
Positioning parts 14, 14 for positioning and locking 11, 11 and mounting holes 15 for screw mounting are locking parts 11, 11 and mounting holes on the mounting surface 2.
The holes are drilled at positions corresponding to 12, respectively.

As shown in FIG. 2, a grounding hole 16 having a long hole into which the grounding terminal 4 is inserted is provided on the mounting surface 13, and the center of the grounding hole 16 is the center of the line connecting the positioning portions 14 and 14. And the longitudinal direction of the ground hole 16 is located at the positioning portion 1
Angle θ with respect to the line connecting 4 and 14, preferably angle θ ≤ 45
It is drilled so that it is offset by only °. Further, the circumference of the ground hole 16 is formed larger than the size of the ground terminal 4 to be inserted, that is, the width direction length of the ground hole 16 is formed thicker than the wall thickness of the ground terminal 4.

Next, a method of mounting the terminal block body 1 and inserting the ground terminal 4 into the ground hole 16 of this embodiment will be described.

First, as shown in FIG. 3 (a), the protruding ground terminal 4 is inserted so as to match the insertion direction of the ground hole 16 of the mounting surface 13, and as shown in FIG. 3 (b), the ground tip portion. 6 and the ground taper portions 7, 7 are projected from the ground hole 16. At this time, as shown in FIG. 3 (a), the locking portion 11,
The line connecting the positioning portions 14, 14 of the mounting surface 13 with respect to the line connecting 11 is displaced by an angle θ. And FIG.
As shown in (b), the mounting surface 2 of the terminal block body 1 is the mounting surface 13
Is arranged at the height of the side part 8 from the locking parts 11, 11
Has not yet been inserted into the positioning parts 14, 14.

Next, as shown in FIGS. 4 (a) and 4 (b), the mounting surface 2 of the terminal block body 1 is pressed against the mounting surface 13 and rotated in the direction of the arrow. Then, in the initial stage of rotation, the ground terminal 4 is kept until the ground terminal 4 is located on the diagonal line of the ground hole 16, that is, until the side portion 8 of the ground terminal 4 contacts the inner wall surface around the ground hole 16. It rotates together with the mounting surface 2 of the base body 1.

Then, as shown in FIG. 5A, when the mounting surface 2 of the terminal block body 1 is rotated by an angle θ with respect to the mounting surface 13, that is, the locking portions 11, 11 are positioned by the positioning portion 14. , 14 until they come into contact with the inner wall surface around the ground hole 16, and are bent into a substantially S-shape and twisted and deformed to the side surface 5 side of the ground terminal 4. The vicinity of the side portion 8 is strongly pressed against the inner wall surface around the ground hole 16.

As shown in FIG. 5 (b), at this time,
The ground terminal 4 projects from the ground hole 16, the locking portions 11, 11 are positioned and locked by the positioning portions 14, 14, and the mounting surface 2 of the terminal block body 1 is temporarily fixed to the mounting surface 13.

Then, as shown in FIGS. 6 (a) and 6 (b),
The screw 17 is inserted into the mounting hole 15 of the mounting surface 13 and the mounting hole 12 of the terminal block body 1, and is tightened to mount and fix the terminal block body 1 to the mounting surface 13.

Next, the operation of this embodiment will be described.

A long hole-shaped ground hole formed on the mounting surface 13.
When the ground terminal 4 is inserted into the ground hole 16, the ground terminal 16 and the deformable plate-shaped ground terminal 4 projecting from the terminal block body 1 are relatively displaced at an angle θ. 4 contacts the inner wall surface of the earth hole 16 and is twisted and deformed to surely contact the inner wall surface of the earth hole 16, and the terminal block body 1 is fixed to the engaging portions 11, 11 and the mounting surface.
Rotation is blocked by the positioning portions 14, 14 of 13, so the ground terminal 4 is inserted into the ground hole 16 and the mounting surface 2 of the terminal block 1 is attached.
Is pressed against the surface 13 to be mounted and rotated, and the locking parts 11, 11
By positioning and locking the to the positioning portions 14 and 14, the electrical connection can be surely obtained by a simple one-touch operation.

Even when a thin plate or a surface-painted plate such as a color steel plate is used as the mounting surface 13, the ground terminal 4 comes into contact with the inner wall surface around the ground hole 16 and is twisted and deformed to cause the ground hole. Because it surely contacts the inner wall surface around 16,
The electrical connection can be surely obtained without being affected by the thickness, state and type of the mounting surface 13.

Next, another embodiment of the terminal block of the present invention is shown in FIG.
It will be described with reference to FIGS.

In this embodiment, as shown in FIG. 7, the structure of the terminal block body 1 is substantially the same as that of the terminal block body 1 shown in FIG. Ground terminal 4
It is formed higher and the ground taper portions 7, 7 are formed relatively large. The structure of the mounted surface 13 is the same as the structure of the mounted surface 13 shown in FIG.

Next, a method of mounting the terminal block body 1 and inserting the ground terminal 4 into the ground hole 16 of this embodiment will be described.

First, as shown in FIGS. 8 (a) and 8 (b), the locking portions 11, 11 of the mounting surface 2 are positioned by the positioning portions 14, 14 of the mounting surface 13.
Then, as shown in FIG. 8 (b), a part of the tip side of the locking portions 11, 11 is projected from the mounting surface 13. At this time,
As shown in (b), the ground tip 6 slightly projects from the center of the ground hole 16. Further, as shown in FIG. 8A, the center of the ground tip 6 is located at the center of the ground hole 16, and the ground terminal 4 and the ground hole 16 are relatively displaced at an angle θ.

Next, as shown in FIG. 9B, when the mounting surface 2 of the terminal block body 1 is gradually pressed against the mounting surface 13, the locking portion
At the same time that 11, 11 are gradually projected from the positioning portions 14, 14, the ground taper portions 7, 7 of the ground terminal 4 are gradually projected from the ground hole 16. Then, as the ground taper portions 7, 7 project from the ground hole 16, as shown in FIG.
As shown in (a), the side portion 8 of the side surface portion 5 of the ground terminal 4
The vicinity contacts the inner wall around the ground hole 16 and is twisted and deformed.

Then, as shown in FIG. 10 (b), when pressing is continued until the mounting surface 2 of the terminal block body 1 comes into contact with the mounting surface 13, the ground terminal 4 is substantially S-shaped as shown in FIG. 10 (a). It bends in a letter shape and is twisted and deformed, and the side portions 8 of the side surface portion 5 of the ground terminal 4 and the vicinities of the side portions 8 are strongly pressed against the inner wall around the ground hole 16.

At this time, as shown in FIG. 10 (b),
The grounding terminal 4 completely protrudes from the grounding hole 16 to the side portions 8 and 8, the locking portions 11 and 11 are positioned and locked to the positioning portions 14 and 14, and the mounting surface 2 of the terminal block body 1 is the mounting surface 13 Temporarily fixed to.

Then, as shown in FIGS. 11 (a) and 11 (b),
Insert the screws 17 into the mounting holes 15 of the mounting surface 13 and the mounting holes 12 of the terminal block body 1 and tighten them to fix the terminal block body 1 to the mounting surface 13
Attach and fix to.

Next, the operation of this embodiment will be described.

The front ends of the locking portions 11 and 11 are attached to the positioning portions 14 and 14 respectively.
Positioning and locking to the mounting surface 2 of the terminal block body 1
A simple one-touch operation of inserting the grounding terminal 4 into the grounding hole 16 while pressing it to 13 ensures reliable electrical connection.

It should be noted that the ground 4 may be provided with a notch for the purpose of facilitating the deformation of the ground terminal 4 and facilitating the deformation of the ground terminal 4 and imparting a spring property to the ground terminal 4. For example, as shown in FIG. 12, slits are provided at both ends of the portion of the mounting surface 2 of the ground terminal 4 that is mounted in the ground mounting hole 3.
21 is provided, or as shown in FIG. 13, a notched portion 22 having substantially the same shape as the ground terminal 4 and having a reduced size is bored inside the ground terminal 4 while leaving the peripheral portion of the ground terminal 4, or Figure
As shown in 14, a slit 23 may be formed perpendicularly to the mounting surface 2 from the center of the tip 5 of the earth piece of the earth terminal 4.

[0036]

According to the terminal block of the present invention, the long-hole-shaped ground hole formed on the mounting surface and the deformable plate-shaped ground terminal projecting from the terminal block body are formed at a predetermined angle. Due to the relative displacement, when the ground terminal is inserted into the ground hole, the ground terminal comes into contact with the periphery of the ground hole and is twisted and deformed to make sure contact with the periphery of the ground hole. Since the rotation is blocked by the stop portion and the positioning portion of the mounted surface, the grounding terminal is inserted into the grounding hole, and the locking portion is positioned and locked to the positioning portion to easily and reliably obtain the electrical connection. be able to.

Further, the electrical connection can be surely obtained without being affected by the thickness, state and type of the mounting surface.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a terminal block of the present invention.

FIG. 2 is a diagram showing one step showing an attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 3 is a diagram showing the next step of FIG. 2 showing the attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 4 is a diagram showing the next step of FIG. 3 showing the attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 5 is a diagram showing the next step of FIG. 4 showing the attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 6 is a view showing the next step of FIG. 5 showing the attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 7 is an exploded perspective view showing another embodiment of the terminal block of the present invention.

FIG. 8 is a view showing a step showing the attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 9 is a diagram showing the next step of FIG. 8 showing the attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 10 is a diagram showing the next step of FIG. 9 showing the attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 11 is a diagram showing the next step of FIG. 10 showing the attaching operation of the above terminal block. (a) is a bottom view of the mounting surface, (b) is a sectional view

FIG. 12 is a side view showing another embodiment of the ground terminal of the present invention.

FIG. 13 is a side view showing another embodiment of the ground terminal of the present invention.

FIG. 14 is a side view showing another embodiment of the ground terminal of the present invention.

[Explanation of symbols]

 1 Terminal block body 4 Ground terminal 11 Locking part 13 Attached surface 14 Positioning part 16 Ground hole

Claims (1)

[Claims] 1. A terminal block main body and a long-hole-shaped ground hole formed on a mounting surface, and projected into the deformable plate-shaped terminal block main body having a thickness thinner than a widthwise length of the ground hole. And a locking portion provided on the terminal block body that is positioned and locked by a positioning portion formed in the vicinity of the ground hole on the mounting surface. A terminal block, wherein the earth hole and the earth terminal are relatively displaced at a predetermined angle when the stopper is positioned and locked to the positioning portion.