JPH04133278A - Terminal block - Google Patents

Abstract

PURPOSE:To prevent accidental short circuit due to waterdrop film by forming a groove communicated to the outside between terminal accommodating recesses on one of opposing surfaces of the main part of a terminal block and a cover, and forming a projection on the other one of the opposing surfaces so that the projection is inserted into the groove with a gap in between. CONSTITUTION:On the surface of the main part of a terminal block 1 opposing a cover 2 are formed right and left terminal accommodating recesses 3. A groove 8 is formed between the recesses 3 and extending in the longitudinal direction at the recesses 3. On the inner surface of the cover 2 is formed a projection 9 to be inserted with a gap into the groove 8. An attachment hole 10 for attaching the main part 1 to an electronic apparatus is formed in the main body 1. The groove 8 is communicated to the outside by way of the hole 10. Introduction grooves 11 for inserting the ends of electric cables 4 are formed on the opposing surfaces of the main part 1 and the cover 2. The gap between the groove 8 and the projection 9 reduces waterdrop holding effect. The groove 8 shuts off the film of successive waterdrop and discharges waterdrops dripping from the projection 9 by way of the hole 10. Thus, terminals 5 are prevented from being short-circuited to each other due to water drops.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a terminal block used for wiring electrical equipment.

Prior Art First, a conventional example is shown in FIGS. 5 and 6. A terminal block main body 1 and a cover 2, each made of synthetic resin, are combined. Two terminal accommodating recesses 3 are formed in the terminal block body 1 and the cover 2 at a predetermined interval, and terminals 5 for connecting electric wires 4 wired for each polarity are formed in these terminal accommodating parts 3. It is stored. These terminals 5 are
As shown in FIG. 6, it has an elastic piece 6 bent at an acute angle and a contact piece 7 opposite the tip edge of this elastic piece 6 at both ends,
The core wire portion of the electric wire 4 is held between the elastic piece 6 and the contact piece 7.

Problem to be Solved by the Invention In a humid atmosphere, water droplets may condense between the terminal block main body l and the cover 2, but since the gap between the two is minute, water droplets cannot be retained easily. Because of the good water droplets, they tend to form a continuous film. Thereby, there is a possibility that the terminals 5 having different polarities may be short-circuited due to the continuous film of water droplets.

Means for Solving the Problems The terminal block body is provided with a terminal block main body having an opening on one side, in which a plurality of terminal storage recesses in which terminals are housed are formed with gaps left, and a cover joined to the terminal block main body. A groove communicating with the outside between the terminal storage recesses is formed on one surface of the surface facing the cover, and a protrusion or groove inserted into the groove with a gap is formed on the other surface. .

Even if water droplets condense on the facing surface of the working terminal block main body and the cover, the water droplet retention ability will be reduced in the grooved part, and the groove formed between the terminal storage recesses that store the terminals or The protrusion blocks a part of the continuous film of water droplets, thereby making it possible to prevent short-circuit accidents between terminals of different polarities due to the film of water droplets.

Embodiment A first embodiment of the present invention will be explained based on FIGS. 1 and 2. Components that are the same as those described in FIGS. 5 and 6 are designated by the same reference numerals, and description thereof will be omitted (the same applies hereinafter). A groove 8 located between the left and right terminal accommodating recesses 3 is formed along the longitudinal direction of these terminal accommodating recesses 3 on the surface of the terminal block main body 1 facing the cover 2. An inserted protrusion 9 is formed on the inner surface of the cover 2. In addition, as shown in FIG. 2, the terminal block body 1 has mounting holes 10 for attaching the terminal block body 1 to a part of electronic equipment.
is formed, and the groove 9 communicates with the outside via this mounting hole 10. Furthermore, an introduction groove 11 for inserting the end of the electric wire 4 is formed on the opposing surfaces of the terminal block main body 1 and the cover 2.

Consider a case where water droplets condense on the opposing surfaces of the terminal block main body 1 and the cover 2 in such a configuration.

Since there is a gap between the opposing portions of the grooves 8 and the protrusions 9, water droplet retention is reduced. Further, water droplets attached to the protrusions 9 are likely to drip. Further, the groove 8 blocks a continuous film of water droplets, receives the water droplets dripping from the protrusion 9, and discharges the water droplets to the outside through the attachment hole 10. Therefore, the terminal 5 of different polarity due to water droplets
It is possible to prevent short-circuit accidents between the two.

Next, a second embodiment of the present invention will be described based on FIG. In this embodiment, a groove 12 is formed on the inner surface of the cover 2 instead of the protrusion 9. This groove 12 is the terminal block main body 1
The grooves 8 are arranged opposite to each other.

In such a configuration, the grooves 8 and 12 are formed in the center facing surfaces of the terminal block main body 1 and the cover 2, which reduce the ability to retain water droplets and block a portion of the water droplet film.

Furthermore, a third embodiment of the present invention will be described based on FIG. 4. In this embodiment, a groove 13.14 located between the terminal storage recess 3 is formed on the facing surfaces of the terminal block main body l and the cover 2, and the grooves 13.14 are inserted into the opposing grooves 13.14 with a gap between them. ridges 15 and 16 are formed.

In such a configuration, the protrusion 15 that protrudes upward from the terminal block main body 1 and leaves a gap in the groove 14 prevents water droplets from entering upward. Water droplets adhering to the protrusions 16 hanging down from the inner surface of the cover 2 tend to drip. Further, the groove 13 blocks a continuous film of water droplets, receives the water droplets dripping from the protrusion 16, and discharges the water droplets to the outside through the attachment hole 1o.

That is, the film of water droplets condensed on the inner surfaces of the terminal block main body 1 and the cover 2 is blocked at two locations.

Effects of the Invention As described above, the present invention includes a terminal block main body with an opening on one side in which a plurality of terminal storage recesses in which terminals are stored are formed with gaps left in between, and a cover joined to the terminal block main body, A groove that communicates with the outside between the terminal storage recesses is formed on one surface of the facing surfaces of the terminal block main body and the cover, and a protrusion or a protrusion inserted into the groove with a gap formed on the other surface. Since the groove is formed, even if water droplets condense on the facing surface of the terminal block body and the cover, the part where the groove is formed will have a reduced ability to retain water droplets, and the area between the terminal storage recesses where the terminals are stored will be reduced. The formed groove or protrusion blocks a portion of the continuous film of water droplets, thereby having the effect of preventing short-circuit accidents between terminals of different polarities due to the film of water droplets.

be.

1... Terminal block body, 2... Cover 3... Terminal storage recess, 4... Electric wire, 5... Terminal, end... Groove, 9...
...Protrusions, 12 to 14...Grooves, 15.16...Protrusions Applicant: Toshiba Lightic Corporation

[Brief explanation of the drawing]

Claims (1)

[Claims] A terminal block main body having an opening on one side in which a plurality of terminal storage recesses in which terminals are stored are formed with gaps left in between, and a cover joined to the terminal block main body, and a surface facing the terminal block main body and the cover. A terminal block characterized in that a groove communicating with the outside between the terminal storage recesses is formed on one surface of the terminal block, and a protrusion or groove inserted into the groove with a gap formed on the other surface. .