JP3232780B2 - Terminal cover for electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-pole electric device having a screw terminal, and more particularly to a terminal cover for insulating a charged exposed portion of an electromagnetic contactor. The present invention relates to a terminal cover of an electric device which is detachably attached to a main body case provided with a partition wall for partitioning a gap between screw terminals to cover a screw terminal portion.

[0002]

2. Description of the Related Art FIG.
And FIG. 9 are known. In the drawing, partitions 1a, 1 are provided on both sides for insulating sections and between the poles provided in correspondence with the number of poles on the front side of the main body case 1 made of synthetic resin.
7, fixed contacts 3 and 3 having upper and lower screw terminals 2 and 2 in FIG. 7 (left and right in FIG. 8) are guided in the guide groove 1 d. A movable contact support 4 is slidably guided on the axis of the main body case in the guide groove 1c between the opposing surfaces. The movable contact support 4 is provided with a square window 4a along the axis of the fixed contact 3,3, and the fixed contact 3a of the fixed contact 3,3 is bridged and opened in the square window 4a. Movable contact 5 having movable contacts 5a, 5a
Are supported together with the contact spring 6. The movable contact support 4 is connected to a movable iron core 7 of a driving electromagnet, only a part of which is installed in the main body case 1. An arc-extinguishing cover 12 having a vertical wall portion 12c is attached to the main body case 1 so as to separate the fixed contacts 3a, 3a of the fixed contacts 3, 3 from the screw terminals 2, 2, and covers and tightens the screw terminals 2, 2. A terminal cover 13 having a through hole 13e for allowing the screws 2a, 2a to act with a driver, and a terminal cover 14 obtained by inverting the terminal cover 13 are mounted.

The main body case 1 has guide grooves 1d for positioning the fixed contacts 3, 3 oppositely on the inner walls of the partition walls 1a, 1a and the pole spacing walls 1b, 1b.
1d, a locking groove 1e for engaging the arc extinguishing cover 12 is provided between the opposed inner walls. The arc-extinguishing cover 12 has a locking projection 12d to be engaged with the main body case 1 and terminal covers 13,1.
Four dovetail grooves 12e and retaining grooves 12f
Is provided. The arc-extinguishing cover 1 is provided on the terminal covers 13 and 14.
Dovetail-shaped projections 13f, 14f and locking projection 13 detachably engaged with the second dovetail-shaped groove 12e and locking groove 12f.
g and 14g are provided.

[0004]

In such a conventional device, in the case of connection using an R-shaped crimp terminal or the like, in order to prevent shortage of insulation distance due to approach of crimp terminals of adjacent poles sandwiching the partition wall 1b. In addition, it is necessary to perform processing such as mounting an insulating cap on the crimp terminal. In addition, when the crimp terminal is viewed in a direction perpendicular to the wiring arrangement surface, the crimp terminal is exposed from the terminal cover, and therefore, the same insulation treatment is required to prevent electric shock. Further, in the case where a parallel connection plate is mounted to use two contacts in parallel, there is a disadvantage that the charged portion is further exposed, which is dangerous.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned disadvantages of the prior art, to connect crimp terminals, directly connect wires, connect wires in parallel, and the like.
A terminal cover that supports various types of connection and that prevents the exposure of the charging exposed part in terms of safety, a terminal cover that enables insulation between the poles to be secured without insulating the terminal part, or
An object of the present invention is to provide a structure of a terminal cover capable of simultaneously achieving the above objects on both sides.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, in the present invention, a multi-pole electric device is detachably attached to a main body case having a partition wall for insulating and separating the gaps between screw terminals arranged in parallel. A terminal protection wall parallel to the wiring arrangement surface, which covers the terminal cover of the electric device which is attached and covers the screw terminal portion, and covers a charged exposed portion of the terminal portion after wiring toward the wiring arrangement surface, and a screw end.
Wiring direction of the partition of the main body case that insulates the gap between the terminals
In the extension direction of the partition and the partition so as to form an extension partition.
A pole spacing wall positioned in connection with the wall; and
The main unit casing is held in the same plane as the partition of the main unit case.
And a clamping wall for sandwiching the partition wall of the
Notches or holes to facilitate resection of pole spacing walls,
Alternatively, a terminal cover having a notched groove is used. Also,
A terminal cover having the tip protection wall, the pole spacing wall and the sandwiching wall, and having a notch hole or hole or a notch groove formed therein for facilitating cutting of the tip protection wall.

[0007]

[Action] Thus, the terminal cover, if terminal cover and a front end protection walls and pole spacing wall and the clamping wall, the charging exposed portion after the wiring terminal portion is covered towards the wire array surface In addition , the safety of insulation against personnel is improved, and the insulation treatment is not required even when the charged exposed portion is long, such as a crimp terminal.

In addition, the terminal cover includes a tip protection wall, a pole spacing wall and a holding wall, and has a cutout hole or a hole or a cutout groove for facilitating cutting of any pole spacing wall. If the terminal cover is formed as described above, or if the terminal cover is formed with a cutout hole or a hole or a cutout groove for facilitating the removal of the protection wall at the tip, the width of support for various connections is widened. Therefore, in consideration of the versatility of use, the inventory should be one type, and if unnecessary pole spacing walls or tip protection walls occur in the use of electrical equipment, they should be cut and used. In this case, advantages can be obtained in both inventory control and mass production effects.

[0009]

1 to 6 show an embodiment of the present invention. FIG. 1 is a perspective view showing a state where a terminal cover is removed, FIG. 2 is a perspective view showing a state where a terminal cover is mounted, and FIG. 4 is a longitudinal sectional view of a main part of an electric device, FIG. 4 is a rear perspective view of a terminal cover, FIG. 5 is a rear view of the terminal cover, and FIG. 6 is a main part cross-sectional view showing a wiring example. In the figure, the same parts as those of the conventional device of FIG.

The difference between the terminal cover according to this embodiment and the conventional one is that the exposed protection portion is extended in the wiring direction so as to prevent the charged portion from being exposed even in various connection types, and a partition is provided between the poles. A clamping wall is provided for holding the partition in the same plane as the partition of the main body case, so that the partition constitutes an extended partition in the partition wiring direction of the main body case and secures a required inter-electrode insulation distance. An unnecessary partition or tip protection wall can be removed according to the type.

More specifically, the method of attaching the terminal covers 15 and 16 to the main body case 1 of the electromagnetic contactor is the same as that of the conventional device. In this case, the terminal covers 15 and 16 can be inverted and used in the same shape. Since the terminal cover 15 is formed as follows,
A dovetail-shaped projection 15f, a locking projection 15g, and a projection 15c are provided to engage with the dovetail-shaped groove 12e, the locking groove 12f of the arc-extinguishing cover 12, and the locking groove 1g of the main body case 1, respectively. Partition walls 1a, 1b, 1b, 1 of main body case 1
Partition walls 15h and 15i are provided on the same wall as b and 1a,
A partition 1 is provided at an end 15j in contact with the end surfaces of the partitions 1a and 1b.
A holding wall 15k is provided so as to sandwich a and 1b. When the partition walls 15h and 15i are unnecessary, the notch hole 15l is provided so that the partition wall 15h and 15i can be easily removed.
5 m is provided.

In the above configuration, when the wire is connected to the screw terminal by the crimp terminal 9, the crimp terminal portion is formed by the partition 1b.
However, the holding wall 15k of the terminal cover 15 makes the partition wall 15i an extension partition wall of the partition wall 1b, and the insulation distance between the adjacent poles is ensured. When two terminals are connected in parallel, the partition wall between the mutual poles to which the parallel terminal plate 10 is attached may be cut off. In this case, the insulation distance between adjacent terminals is also reduced by the holding wall 15k. Partition wall 15i
Is secured by the partition wall 15i held in the same plane.
The parallel connection can be used not only for two terminals but also for more terminals by similarly removing the partition wall 15i.

In the case where the electric wire is directly connected without using the crimp terminal 9 and the insulation distance between the adjacent terminals is sufficiently large and there is no problem in terms of safety, the tip protection wall 15 of the terminal cover 15 is used.
By removing d, the shape can be made equivalent to that of the conventional example, so that the external dimensions can be reduced.

[0014]

According to the present invention, since the terminal cover of the electric device is constructed as described above, the following effects can be obtained. According to the terminal cover of the present invention , even in the case of a terminal having a charging exposed portion long in the wiring direction, such as a crimp terminal, the terminal screws of adjacent poles in the electric device are arranged in parallel to form a terminal.
Even if the charge exposed part of the terminal part becomes extremely long by interposing a parallel connection plate for connecting to this external wiring between the screw terminal and the external wiring, the charged exposed part is protected by the tip protection wall. Since it can be covered toward the wiring arrangement surface, insulation safety against personnel can be ensured.

In addition, since the pole spacing wall forms a partition wall extending in the wiring direction of the main body case partition wall and secures a required inter-pole insulation distance, there is no need to insulate terminals, and wiring work for electrical equipment can be completed in a short time. and, the cost of the control panel or the like for accommodating the electrical equipment is reduced, the corresponding widths of the various connections spread more thereto, as type 1 the terminal cover inventory managed, unnecessary use surface of the electrical device In this case, by cutting off the pole spacing wall or the tip protection wall and using it, advantages can be obtained in both inventory control and mass production effects.

[Brief description of the drawings]

FIG. 1 shows a structure of a terminal cover according to an embodiment of the present invention.
Perspective view showing the appearance of the electric device main body in a state where the electric device main body is detached from the electric device main body.

FIG. 2 is a perspective view showing an external appearance of the electric device main body in a state where the terminal cover shown in FIG. 1 is attached to the electric device main body.

FIG. 3 is a longitudinal sectional view showing a structural example of a main part of an electric device main body to which the terminal cover shown in FIG. 1 is attached.

FIG. 4 is a rear perspective view of the terminal cover shown in FIG. 1;

FIG. 5 is a rear view of the terminal cover shown in FIG. 1;

FIG. 6 is a sectional view of an essential part showing a wiring connection example to which the terminal cover according to the present invention is applied;

FIG. 7 is a perspective view showing the appearance of an electric device main body in a state where a terminal cover according to a conventional example is mounted on the electric device main body.

8 is a longitudinal sectional view showing a structural example of a main part of an electric device main body to which the terminal cover shown in FIG. 7 is attached.

9 is an exploded longitudinal sectional view showing a configuration example of a main part of an electric device main body to which the terminal cover shown in FIG. 7 is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 1b Partition wall 2 Screw terminal 9 Crimp terminal 10 Parallel connection plate 13 Terminal cover 14 Terminal cover 15 Terminal cover 15i Pole spacing wall 15k Holding wall 15l Notch hole 15m Notch groove 16 Terminal cover

Claims (2)

(57) [Claims] 1. A terminal cover of an electric device, which is detachably mounted on a main body case having a partition wall for insulating and separating the poles of screw terminals arranged side by side of a multipolar electric device and covers a screw terminal portion, after wiring, A terminal protection wall parallel to the wiring arrangement surface, covering the charged exposed portion of the terminal portion of the terminal toward the wiring arrangement surface, and a screw terminal
Extending the wiring direction of the partition wall of the main body case that insulates between the poles
In the extension direction of the partition and the partition so as to constitute a partition
A pole spacing wall located in a connected state, and
To keep the case in the same plane as the case partition,
And a clamping wall for sandwiching the partition wall, and
Notches or holes to facilitate septum resection,
Is a terminal cover for electrical equipment, wherein a notch groove is formed . 2. A terminal cover of an electric device, which is detachably mounted on a main body case having a partition wall for insulating and separating the gaps between screw terminals arranged side by side of a multipolar electric device and covers a screw terminal portion, after wiring, Face the exposed part of the terminal to the wiring arrangement surface.
The end protection wall parallel to the wiring arrangement surface and the partition wall of the main body case that insulates the gap between the terminals of the screw terminals in the extending direction of the partition wall and in a state of connection with the partition wall so as to form a partition wall extending in the wiring direction. Rutotomoni comprising a pole pitch wall positioned, the clamping walls sandwiching the main body case of the partition wall to hold the ultra spacing walls in the partition wall and the same surface of the main body case, distal protection of
Notches or holes to facilitate wall resection, or
A terminal cover for an electric device, wherein a notch groove is formed .