JPS6325645Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a terminal cover that protects the terminals of circuit breakers and makes it difficult to touch the live parts. It is related to disconnection.

Conventionally, there has been a terminal cover for this type of circuit and disconnector as shown in FIG. In the figure, 1 is a case of the circuit and disconnector body, 2 is a terminal cover that covers the live part, 2a is a perforated projection provided on the terminal cover 2, and 3 is a fixing of the terminal cover 2 to the case 1. Mounting screws 4 are sealing screws that also serve to fix and seal the terminal cover 2 to the case 1, and 5 are sealing wires that connect the perforated protrusion 2a of the terminal cover 2 and the sealing screw 4 for sealing.

Conventional terminal covers for circuits and disconnectors are constructed as described above, so when attaching the terminal cover 2 to the case 1 with the mounting screws 3 and sealing screws 4, the above-mentioned Mounting screw 3
and embed a nut that screws into the sealing screw 4, or
Alternatively, it was installed by cutting a female thread directly into the case 1. With such a structure, the former has the disadvantage that the molding of the case 1 is expensive, and the latter has the disadvantage that the case 1 is weak and the internal threads can be destroyed by repeated attachment. Also, when attaching or detaching the terminal cover, use the mounting screw 3.
Also, the sealing screw 4 had to be attached and detached, which required a lot of work.

This invention was made in order to eliminate the above-mentioned drawbacks of the conventional ones, and provides a circuit or disconnector in which the terminal cover can be attached and detached and the sealing operation can be performed immediately.

An embodiment of this invention shown in FIGS. 2 to 8 will be described below. Reference numeral 1 denotes a main body case of the circuit breaker, which is formed by a cover part 1a and a base part 1b. 1c and 1d are mounting holes for installing circuits and disconnectors, and there is a stepped part 1e in the middle of one of the mounting holes 1c.
has. 1f is a terminal portion. A terminal cover 2 is made of an elastic insulating material and covers the terminal portion 1f. On the inside of the terminal cover 2, there is provided a U-shaped protrusion 2c that corresponds to and fits into the mounting hole 1c. This protrusion 2c has one end as a free end 2f.
The free end 2f can be operated from the surface of the terminal cover 2. Further, an engaging portion is formed in a portion of the free end 2f. 2d is a rod-shaped protrusion that fits in the mounting hole 1d.

Further, on the surface of the terminal cover, there is a protrusion 2c.
A perforated projection 2a having a hole through which the sealing wire 5 passes is provided adjacent to the hole. 6 is a sealing piece that engages with the U-shaped groove 2g of the projection 2c, and has a hole 6a at one end through which the sealing wire 5 passes, and a free end 2f at the other end.
The terminal cover 2 has a protrusion 6b having a shape suitable for operating from the surface of the terminal cover 2.

When attaching the terminal cover 2 to the case 1 in such a configuration, when the protrusions 2c and 2d provided on the terminal cover 2 are inserted into the mounting holes 1c and 1d provided in the case 1, they are formed in a U shape. The protruding portion 2c is inserted to a certain point while being bent, and the engaging portion 2e engages with the stepped portion 1e provided in the attachment hole 1c. The sealing piece 6 is inserted into the U-shaped groove 2g from the surface of the terminal cover 2 as shown in FIGS. 6 and 7. When the seal wire 5 is passed through the hole 6a provided in the seal 6 and the perforated protrusion 2a provided on the surface of the terminal cover 2 and sealed, the free end 2f of the protrusion 2c of the terminal cover 2 is loosened. The terminal cover 2 cannot be removed because the engagement between the engaging portion 2e and the stepped portion 1e cannot be released. When removing the terminal cover 2, first remove the sealing wire and pull out the sealing piece 6 from the U-shaped groove 2g. Then, the free end 2f of the protrusion 2c of the terminal cover 2 is bent in the direction B using the protrusion 6b of the sealing piece 6 to release the engagement between the engagement part 2e and the stepped part 1e, and the terminal cover 2 is removed.

As described above, according to this invention, the terminal cover 2 can be attached to the case 1 by simply inserting the protrusion 2c of the terminal cover 2 into the circuit disconnector attachment hole 1c. Attachment and detachment can be done in a short time without using tools such as a screwdriver.

Further, when sealing is to be performed, the sealing piece 6 is simply inserted and the sealing piece 6 and the terminal cover 2 are tied together with the sealing wire 5, so that the sealing can be done easily and in a short time.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional circuit and disconnector, Figs. 2 to 8 partially show an embodiment of this invention, Fig. 2 is a front view of the terminal section, The figures are a side view of Fig. 2, Fig. 4 is a front view of the terminal cover, Fig. 5 is a sectional view taken along line A-A of Fig. 4, Fig. 6 is a front view and side view of the sealing piece, and Fig. 7. FIG. 8 is a side view for explanation. In the figure, 1 is the case of the main body, 1
c, 1d are mounting holes, 1e is a stepped portion, 2 is a terminal cover, 2a is a perforated projection, 2c is a projection, 2e is an engaging portion, 2f is a free end, 5 is a sealing line, 6 is a sealing piece, 6a is a sealing hole, and 6b is a protrusion for operation.
Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A circuit breaker is equipped with a terminal cover that covers the terminal part of the main body, and a mounting hole having an internal locking step is provided near the terminal part of the main body, and the terminal cover is connected to the terminal cover part. , formed in a substantially U-shape with one end being a bendable free end, and
a protrusion provided at a position corresponding to the mounting hole on the back surface of the terminal cover so that the free end and the U-shaped groove are exposed on the surface of the terminal cover; and a protrusion formed at the free end of the protrusion. The engaging portion and a perforated projection disposed on the surface of the terminal cover portion in close proximity to the free end of the projection are integrally formed of an elastic insulating material, and the projection is fitted into the mounting hole. The terminal cover is attached to the main body by engaging the engaging portion with the locking stepped portion, and a sealing hole is provided at one end and a protrusion that can engage with the free end of the protruding portion is provided at the other end. The other end of the sealing piece provided with a portion is inserted into the U-shaped groove, and the sealing wire is passed through the sealing hole of the sealing piece and the hole of the perforated projection of the terminal cover to seal the terminal cover. circuit break or break.