JPS6325644Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a terminal cover for protecting the terminals of circuits and disconnectors and making it difficult to touch the live parts.
This invention relates to circuits and disconnectors that have improved ease of installation and sealing structure.

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 breaker body, 2 is a terminal cover that covers the live part, 2A is a perforated protrusion provided on the terminal cover 2, and 3 is a case for connecting the terminal cover 2 to the case 1.
4 is a sealing screw that also serves to fix and seal the terminal cover 2 to the case 1;
5 is a sealing wire connected to the perforated protrusion 2A of the terminal cover 2.
and the above-mentioned sealing screw 4 to seal it.

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 the sealing screws 4, The case 1 is mounted by embedding a nut that screws into the mounting screw 3 and the sealing screw 4, or 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 are destroyed by repeated attachment. Furthermore, when attaching and detaching the terminal cover 2, the mounting screws 3 and the sealing screws 4 must be attached and detached, which is time consuming.

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 7 will be described below. Reference numeral 1 denotes a case of the circuit breaker body, which is formed by a cover part 1A and a base part 1B. Reference numerals 1C and 1D are mounting holes for mounting circuits and disconnectors, and one of the mounting holes 1C has a stepped portion 1E halfway inside. 1F is a terminal section. 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. One end of the protrusion 2C is a free end 2F, and the free end 2F can be operated from the surface of the terminal cover 2. Further, an engaging portion 2E is formed in a portion of the free end 2F. 2D is a rod-shaped protrusion that fits into the attachment hole 1D. In addition, a protrusion 2 is provided on the surface of the terminal cover 2.
A perforated projection 2A having a hole through which the sealing wire 5 passes is provided adjacent to C. 6 is a sealing piece that fits into the U-shaped groove 2G of the protrusion 2C, and has the sealing line 5 at one end.
A hole 6A is provided through which the hole 6A passes.

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 on 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. Then, when the sealing wire 5 is passed through the hole 6A provided in the sealing piece 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 5 and insert the sealing piece 6 into the U-shaped groove 2.
Pull it out from G. And the protrusion 2 of the terminal cover 2
Terminal cover 2
Remove.

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. can be attached and detached in a short time. Further, when sealing is to be performed, the sealing piece 6 is 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 simply and in a short time.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional circuit and disconnector, Figs. 2 to 7 partially show an embodiment of this invention, Fig. 2 is a front view of the terminal section, and Fig. 2 is a side view of FIG. 2, FIG. 4 is a front view of the terminal cover, FIG. 5 is a sectional view taken along the line A--A of FIG. 4, and FIGS. 6 and 7 are side views for explanation. In the figure, 1 is the case of the main body, 1C and 1D are mounting holes, 1E is a step, 2 is a terminal cover, 2A is a perforated projection, 2C is a projection, 2E is an engaging part, 2F is a free end, 5 is a sealing line, 6 is a sealing piece, and 6A is a sealing hole. 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 step, and the other end of the sealing piece having a sealing hole at one end is inserted into the U-shaped groove. A circuit and disconnector characterized in that a sealing wire is passed through the sealing hole of the sealing piece and the hole of the perforated projection of the terminal cover for sealing.