JPH0896688A - Electrical apparatus with terminal portion and combining terminal cover used for the apparatus - Google Patents

Abstract

PURPOSE: To provide an electrical apparatus with a terminal portion to which a terminal cover of a necessary minimum size is attached, and when a wire with a long tip charging portion is connected, another terminal cover can be further combined therewith, and provide the combining terminal cover for the electrical apparatus with the terminal which can be simply combined with the terminal portion of the electrical apparatus and can cover the long tip charging portion of the wire surely. CONSTITUTION: A circuit breaker 1 is provided with a main body 2, a terminal portion 6, and a terminal cover 10 which a wire 13 can passes through and is attached to the terminal portion 6 so as to cover a terminal device 9. The terminal cover 10 is provided with a combination portion 10g with which a combining terminal cover 12 can be combined in a departing direction from the main body 2. The combining terminal cover 12 is combined with the terminal cover 10 so as to cover a part of the wire, and is provided with first combination portion 12f combined with the combination portion 10g of the terminal cover 10 and second combination portion 12h with which another combining terminal cover can be combined.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device having a terminal portion such as a circuit breaker and a connecting terminal cover used for the electric device.

[0002]

2. Description of the Related Art An electric device such as a circuit breaker has a terminal portion at an end of a main body which houses a switchgear. This terminal part is provided with a terminal block and a plurality of insulating partition walls connected to the end of the main body,
A terminal device is arranged between each insulating partition. Since the terminal device is composed of a terminal plate and a terminal screw and connects an electric wire, the charging portion is exposed as it is. Therefore, the terminal cover is usually attached to the terminal portion so that the electric wire can be inserted and the terminal device is covered. Various terminal covers or electric devices having terminal covers attached thereto have been proposed such as Japanese Utility Model Laid-Open Nos. 57-167549, 60-134261 and 61-60450.

[0003]

Most of the subjects of the above-mentioned proposals so far are structures in which the terminal cover can be easily and surely attached to the terminal portion. By the way, there are electric wires connected to the terminal device only by removing the insulating coating, those having a crimp terminal fixed to the tip, and the like. In the latter case, the exposed charging portion is longer than in the former case. Therefore,
Even if the latter one is designed with a terminal cover that can cover the charged part, the entire electric device will be large even if the former one is connected. To prevent this from happening, prepare two types of terminal covers and connect the wires. It will be selectively used according to

The present invention has been made in view of the above circumstances. A first object of the present invention is to attach a terminal cover having a minimum required size to a terminal portion and connect an electric wire having a long charging portion at the tip. In the case of doing so, it is to provide an electric device having a terminal portion to which another terminal cover can be connected. A second object of the present invention is to provide a connecting terminal cover for use in an electric device, which has a terminal portion that can be easily connected to the terminal cover of the electric device and can surely cover a long charged portion of the electric wire.

[0005]

In order to solve the above-mentioned problems, an electric device having a terminal portion according to claim 1 has a main body accommodating a switchgear, a terminal block and a plurality of insulating partitions. A terminal portion that is connected to the terminal portion and that has a terminal device disposed between the insulating partition walls; and a terminal cover that allows insertion of an electric wire connected to the terminal device and that is attached to the terminal portion so as to cover the terminal device. In the terminal cover,
A connecting portion for connecting another terminal cover is provided in a direction away from the main body.

A connecting terminal cover used in an electric device having a terminal portion according to claim 2 allows a wire to be connected to the terminal device according to claim 1 to be inserted therethrough and separates the wire from each other. A second connecting part which is connected to the terminal cover so as to cover a part of these electric wires and which can connect another terminal cover to the first connecting part connected to the connecting part of the terminal cover. It is configured to have a connecting portion.

According to a third aspect of the present invention, there is provided a connecting terminal cover for use in an electric device having a terminal portion, wherein the connecting portion of the terminal cover is used as a locking recess and the first connecting portion is provided at the tip. The elastic projection is provided with a locking claw that is locked in the locking recess, and the second connecting portion is a locking recess.

Further, a connecting terminal cover used for an electric device having a terminal portion according to claim 4 is such that the connecting portion of the terminal cover according to claim 2 is a dovetail groove, and the first connecting portion is fitted in the dovetail groove. The protrusions are combined with each other, and the second connecting portion is a dovetail groove.

[0009]

According to the structure of claim 1, when the electric wire having a long charging portion is connected to the terminal device of the electric device and the charging portion protrudes from the terminal cover, the connecting portion is moved away from the main body. Other terminal covers can be connected to cover the charging part.

According to the second aspect of the present invention, the first connection of the connecting terminal cover is made when the electric wire having a long charging portion at the tip is connected to the terminal device of the electric device and the charging portion protrudes from the terminal cover. The portion can be connected to the connecting portion of the terminal cover to increase the length for covering the charging portion. further,
The length for covering the charging portion can be further increased by connecting another connecting terminal cover.

According to the structure of claim 3, in addition to the effect of claim 2, the work of connecting the connecting terminal cover to the terminal cover can be performed with one touch.

According to the structure of claim 4, in addition to the effect of claim 2, the connection state between the connection terminal cover and the terminal cover becomes more reliable.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. In this embodiment, the case where the electric device is a three-pole type circuit breaker will be described.

The circuit breaker 1 has a main body 2, a terminal portion 6 and a terminal cover 10 as main constituent members. Body 2 is the base
A housing is formed by 3 and the lid 4, and a 3-pole type breaker mechanism (switching device) is housed inside the housing. Reference numeral 5 is a handle for turning on and off the breaker mechanism (switchgear).

The terminal portions 6 are connected to both ends of the main body 2, that is, the base body 3 and the lid body 4, respectively.
And four insulating partition walls 8, ... 8 and terminal devices 9,9,9 are arranged between the insulating partition walls 8,8. Two inner insulating partitions 8,
8 is thicker than the outer one, and has screw holes 8a, 8a on its upper surface for attaching a terminal cover described later. In addition, the two outer insulating partitions 8 and 8 have thinner ends. Each of the insulating partition walls 8, ... 8 has vertical grooves 8b. The terminal device 9 consists of a terminal plate 9a and a terminal screw that are electrically connected to the contacts of the switchgear.
9b and terminal washer 9c.

The terminal cover 10 includes a horizontal portion 10a and a front vertical portion.
10b and the narrow side vertical portion 10c form a substantially L shape. The horizontal portion 10a is placed on the upper surface of the insulating partition walls 8 ... 8 and has screw operation holes 10 corresponding to the terminal screws 9b ... 9b.
d ... 10d and a threaded hole 10e through which the mounting screw 11 is inserted. The front vertical portion 10b abuts on the end faces of the insulating partition walls 8, ... 8 and has U-shaped electric wire insertion holes 10f, ... 10f through which electric wires to be connected are inserted, and there are two connecting portions on the outer surface. Grooves 10g, 10g are provided on their inner surfaces with protrusions 10h, 10h that fit into the vertical grooves 8b, 8b as shown in FIG. Side narrow vertical part 10c
Is to be brought into contact with the thin portions of the two outer insulating partition walls 8 and 8, and as shown in FIG. 2, projections 10h and 10h that fit into the vertical grooves 8b and 8b are provided on the inner surface. Therefore, the terminal cover 10 is attached to the terminal portion 6 so that the electric wires connected to the terminal devices 9 ... 9 can be inserted and the terminal devices 9 ... 9 are covered.

Reference numeral 12 denotes a connecting terminal cover, which has a box-like shape with a horizontal portion 12a, a front vertical portion 12b, and a side surface vertical portion 12c, and has a roughly two-sided opening. Has 12d. Further, as shown in FIG. 3, a short side wall 12e is continuously provided from the open end of the horizontal portion 12a, and the side wall 12e further has a protrusion which is a first connecting portion fitted into the dovetail grooves 10g, 10g. 12f and 12f are provided.

The horizontal portion 12a has substantially the same dimensions as the horizontal portion 10a of the terminal cover 10 in both the longitudinal and lateral directions. The front vertical portion 12b is the front vertical portion 10b of the terminal cover 10.
Has a U-shaped wire insertion hole 12g ... 12g for inserting an electric wire to be connected, and has two dovetail grooves 12h, 12h as a second connecting portion on the outer surface. Therefore, the connecting terminal cover 12 allows the insertion of the electric wires connected to the terminal devices 9 ... 9 and separates the electric wires from the partition wall 12.
The projections 12 and 12d are provided to cover a part of these wires.
It is connected to the terminal cover 10 by fitting f and 12f into the dovetail grooves 10g and 10g.

FIG. 4 shows a state in which the terminal cover 10 is attached to the terminal portion 6 with the attachment screw 11, and FIG. 5 shows a connecting terminal cover.
12 shows a state in which 12 is connected to the terminal cover 10 by means of a dovetail joint.

FIG. 6 shows a case in which the tip charged portion of the electric wire connected to the terminal devices 9 ... 9 is short, and FIG. 7 shows a case in which it is long. Both wires 13 and 15 are
The crimp terminals 14 and 16 are crimped and fixed to the tip portion to be connected to ... 9, but the crimp terminal 14 shown in FIG. 6 is U-shaped and has a short length, and the crimp terminal 16 shown in FIG. Has a long length. Therefore, if the wire has only the insulation coating removed or the crimp terminal 14 is crimped and fixed, the terminal cover
Attach only 10 to terminal 6. Also, crimp terminals 16
If the terminal cover 12 is crimped and fixed, the connecting terminal cover 12 is further connected to the terminal cover 10.

Such an electric device, that is, a circuit breaker 1
The terminal cover 10 is attached as standard equipment to the terminal section 6, and if the charging section at the tip is connected to a wire and the charging section protrudes from the terminal cover 10, the connecting section of the terminal cover 10 The two dovetail grooves 10g, 10g can be fitted and connected with the projections 12f, 12f, which are the first connecting portions of the connecting terminal cover 12, in the direction away from the main body 2 to cover the charged portions thereof. Further, in the case where the charged portion still protrudes from the connecting terminal cover 12 in the above-described state, another connecting terminal cover 12 is provided with the protrusion 12 which is the first connecting portion.
It is possible to fit and connect the f and 12f to the two dovetail grooves 12h and 12h which are the second connecting portions of the above-mentioned connecting terminal cover 12 to cover the charged portion thereof.

Next, a second embodiment of the present invention will be described with reference to FIG. This embodiment is different from the first embodiment in the terminal cover.
The connection structure of 10 and the connection terminal cover 12 is different.

The terminal cover 10 has narrow vertical portions 10 on both side surfaces.
Near the center of c, 10c, replace the two dovetail grooves 10g, 10g with 2
The square holes 10j and 10j are provided as locking recesses (connecting portions). In addition, the connecting terminal cover 12 has elastic projection pieces 12j, 12j connected in series from the end of the vertical side surface 12c, instead of the projections 12f, 12f, and engaged with the square holes 10j, 10j at the tip thereof. Claw 12k,
12k is provided as the first connecting part. And dovetail 12
Square holes 12m and 12m are provided instead of h and 12h to form locking recesses (second connecting portion). The locking recess (coupling part) may be a so-called recess instead of a hole, and the point is that there is only a stepped part where the locking claws 12k, 12k can be locked.

With this structure, the operation of connecting the connecting terminal cover 12 to the terminal cover 10 can be performed with one touch.

9 and 10 show a modification of the connecting structure of the terminal cover 10 and the connecting terminal cover 12. That is,
The connecting portion of the terminal cover 10 in FIG. 9 is a front vertical portion 10b.
10n formed along the entire length of the outer surface of the connection terminal cover 12, and the first connecting portion of the connecting terminal cover 12 has projections 12n, 12n fitted into the vertical grooves 10n. Although the first connecting portion of the connecting terminal cover 12 is omitted, any one of the embodiments described above may be selected. The connecting portion of the terminal cover 10 in FIG. 10 is a dovetail groove 10p ... 10p formed over the entire length of the outer surface of the front vertical portion 10b.
The first connecting portion of 12 is a projection 12p, which fits into the vertical groove 10p.
12p. Although the first connecting portion of the connecting terminal cover 12 is omitted, any one of the embodiments described above may be selected. Since the fitting portions of both connecting portions are long, a more reliable connected state can be secured.

The electric device is not limited to the circuit breaker, and any device having a terminal portion such as an electromagnetic contactor or a switching device can be applied. Further, it goes without saying that the terminal portion may be provided on only one side of the main body.

[0027]

According to the present invention, in an electric device having a terminal portion, a terminal cover having a minimum necessary size is attached to the terminal portion, and an electric wire having a long charging portion at the tip is attached to the terminal device. If the charged part protrudes from the terminal cover after connection, at the connecting part of the terminal cover to cover the charged part,
Another terminal cover can be connected in the direction away from the main body.

A connection terminal cover used for an electric device having a terminal portion according to claim 2 is a case where a wire having a long charging portion at the tip is connected to a terminal device of the electric device and the charging portion protrudes from the terminal cover. In addition, it is possible to easily connect the first connecting portion of the connecting terminal cover to the connecting portion of the terminal cover to increase the length of covering the charging portion, and further connect another connecting terminal cover to connect the charging portion. It is possible to further increase the length of covering.

In addition to the effect of the second aspect, the connection terminal cover used in the electric device having the terminal portion according to the third aspect enables the operation of connecting the connection terminal cover to the terminal cover with one touch.

In addition to the effect of the second aspect, the connection terminal cover used in the electric device having the terminal portion according to the fourth aspect provides a more reliable connection state between the connection terminal cover and the terminal cover. .

[Brief description of drawings]

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

FIG. 2 is a perspective view of the terminal cover.

FIG. 3 is a perspective view of the connecting terminal cover.

FIG. 4 is a cross-sectional view showing a state in which the terminal cover is attached.

FIG. 5 is a cross-sectional view showing a state in which the connecting terminal cover is connected to the terminal cover.

FIG. 6 is a perspective view showing a circuit breaker and a wire having a short charged end.

FIG. 7 is a perspective view showing a circuit breaker and a wire having a long charging end.

FIG. 8 is an exploded perspective view of essential parts showing a second embodiment of the present invention.

FIG. 9 is an exploded perspective view showing a modified example of the combined structure of the terminal cover and the connecting terminal cover.

FIG. 10 is an exploded perspective view showing another modification of the same.

[Explanation of symbols]

 1 Circuit breaker (electrical equipment) 2 Main body 6 Terminal part 7 Terminal block of terminal part 8 Insulating partition wall of terminal part 8b Groove with insulating partition wall 9 Terminal device of terminal part 10 Terminal cover 10a Horizontal part of terminal cover 10b Terminal cover Front vertical part 10c Side narrow vertical part of terminal cover 10f Wire insertion hole of terminal cover 10g Groove (connecting part) of terminal cover 11 Attachment screw 12 Connecting terminal cover 12a Horizontal part of connecting terminal cover 12b Connecting terminal Front vertical part of cover 12c Vertical side part of connecting terminal cover 12d Partition of connecting terminal cover 12f Projection of connecting terminal cover (first connecting part) 12g Wire insertion hole of connecting terminal cover 12h With connecting terminal cover Groove (second connecting part) 13,15 Electric wire 14,16 Crimp terminal fixed to electric wire

Claims (4)

[Claims] 1. A main body accommodating a switchgear, a terminal block and a plurality of insulating bulkheads connected to an end of the main body, and a terminal portion provided with a terminal device between the insulating bulkheads, and connected to the terminal device. In an electric device having a terminal cover provided with a terminal cover that allows insertion of an electric wire and is attached to a terminal unit so as to cover the terminal device, in the terminal cover, another terminal is provided in a direction away from the main body. An electric device having a terminal portion, which is provided with a connecting portion for connecting a cover. 2. An electric wire connected to the terminal device is inserted and has a partition wall separating the electric wires, and the electric wires are connected to the terminal cover so as to cover a part of the electric wires. First connected to the connecting portion of the terminal cover
A connecting terminal cover for use in an electric device having a terminal portion, which is provided with a connecting portion and a second connecting portion for connecting another terminal cover. 3. The connecting portion of the terminal cover is a locking recess, and the first connecting portion is an elastic projection piece provided with a locking claw that is locked in the locking recess at the tip. The connecting terminal cover used for an electric device having a terminal portion according to claim 2, wherein the portion is a locking recess. 4. The connecting portion of the terminal cover is a dovetail groove,
The first connecting portion is a protrusion that fits in the groove, and the second connecting portion
The connecting terminal cover used for an electric device having a terminal portion according to claim 2, wherein the connecting portion is a dovetail groove.