JPH0965517A - Distribution board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution board which makes it hard to see a molding sink outside a positioning rib. SOLUTION: This distribution board is equipped with a body 1 made of synthetic resin and having side walls 5, a master switch 2 and branch switches 3 fitted inside the body 1 and a cover 4 which is made of synthetic resin and which has side walls 46 made to butt the side walls 5 of the body 1 and covers the body 1. Positioning ribs 50 are made to project on butting surfaces of the side walls 5 of the body 1 and grooves wherein the positioning ribs 50 are fitted are formed in the side walls 46 of the cover 4. Besides, retaining ribs are provided upright on the inner surfaces of the side walls 5 where on the positioning ribs 50 are formed, and the wall thickness in a place of a prescribed extent containing the positioning ribs 50 in the circumferential direction of the side wall 5 is made larger than that of the other side walls 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distribution board applied to general households and the like.

[0002]

2. Description of the Related Art A conventional distribution board of this type has a body made of synthetic resin having a side wall, a main switch and a branch switch mounted in the body, and a side wall abutting against the side wall of the body. A cover made of synthetic resin for covering the body, wherein a positioning rib is projected on an abutting surface of one side wall of the body and the cover, and a groove into which the positioning rib is fitted is formed on the other side wall. there were.

According to this distribution board, alignment with the body when the cover is closed can be easily performed.

[0004]

However, this distribution board has positioning ribs when the body and the cover are made thin and the holding ribs are erected on the inner surfaces of the positioning ribs to reinforce in order to reduce the size and weight. The outer surface of the side wall has a defect that a sink mark appears in the molding and the appearance is deteriorated. Further, when the side wall of the body or the cover becomes thin, the positioning rib becomes thin, and the breakage and breakage easily occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a distribution board in which molding sinks on the outside of the positioning rib can be made invisible and the positioning rib can be strengthened.

[0006]

According to a first aspect of the present invention, there is provided a distribution board, wherein a body made of synthetic resin having a side wall, a main switch and a branch switch mounted in the body, and butted against a side wall of the body. A cover made of synthetic resin having a side wall for covering the body, a positioning rib is formed on an abutting surface of one side wall of the body and the cover, and a groove into which the positioning rib is fitted is formed on the other side wall. In addition, the holding rib is provided upright on the inner surface of the side wall where the positioning rib is formed, and the wall thickness of a predetermined range including the positioning rib in the circumferential direction of the side wall is thicker than the thickness of the side wall. It is a feature.

According to the distribution board of the first aspect, the side walls can be easily abutted by the engagement of the positioning ribs and the grooves, and the side walls are not easily bent even if the side walls are thinned by the holding ribs. Furthermore, since the thickness of a predetermined range in the circumferential direction including the holding rib on the side wall where the positioning rib is formed is formed thick, the sink mark at the time of molding the positioning rib and the holding rib is reduced,
It becomes difficult for the ribs to appear on the outer surface of the side wall, and the positioning rib can be thickened and strengthened.

The distribution board according to claim 2 is the same as that according to claim 1.
The predetermined range has a length that exceeds about three times the thickness of the side wall in each of the two circumferential directions from the holding rib. According to the distribution board of the second aspect, in addition to the effect of the first aspect, the sink mark in molding can be made inconspicuous and the range of thickening the side wall can be minimized.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. That is, this distribution board includes a body 1, a master switch 2, a branch switch 3, and a cover 4.
And The body 1 is made of a synthetic resin having a side wall 5, a positioning rib 50 is projected on the abutting surface of the side wall 5, a holding rib 51 is provided upright on the inner surface of the side wall 5 on which the positioning rib 50 is formed, and the thickness of the side wall 5 is smaller than the thickness of the side wall 5. Also, the wall thickness of the predetermined range A including the positioning rib 50 in the circumferential direction of the side wall 5 is formed thick (FIG. 6).

In the embodiment, in the predetermined range A,
The positioning rib 50 is formed on the inner surface side of the side wall 5, and the thickness of the positioning rib 50 is increased within the range of the positioning rib 50.
Inclined surface 5 on the inner surface so that the thickness gradually decreases from both sides of
2 are formed. Particularly, the predetermined range A is the holding rib 5
The length in each of the two directions from 1 to the circumferential direction exceeds about 3 times the thickness of the side wall 5. Fig. 8 shows the actual dimensional relationship.
As shown in FIG. 5, the thickness of the side wall 5 is 2.7 mm, the thickness of the side wall 5 is 3.2 mm at the position of the positioning rib 50, and the positioning rib 5 is
0 is 10 mm in the circumferential direction, 20 mm in length including the inclined surface 52 of the thick portion, and 1.2 mm in thickness of the holding rib 51. The dimension from the holding rib 51 to the end of the inclined surface 52 is 10
Since it is mm, it can be seen that the thickness of the side wall 5 is more than 3 times the thickness 2.7.

Further, a mounting hole 6 for mounting on a mounting surface is formed on the bottom of the body 1 (FIG. 3), and hooks 7 for detachably locking the cover 4 on the upper and lower sides of the body 1 in FIG.
7'is provided. The hook 7 is integrally formed, and a separate member is attached to the hook 7'to allow the hook 7'to fall inward through the notch 5a formed in the side wall 5 (Fig. 1). Further, on the upper side wall 10 of the side wall 5, a large number of wire knockout portions 11 are formed. Fifteen
Is a positioning / mounting part.

The main switch 2 and the branch switch 3 are mounted in the body 1. The main switch 2 is an earth leakage breaker, and has an opening / closing handle 8 protruding on the upper surface 30, connecting terminals 9 at both ends, and a bottom surface attached to the body 1 via a bottom plate 13. The connection terminal portion 9 is formed lower than the upper surface 30 and protrudes outward, and the connection terminal portion 9 on the upper side in FIG. 3 is the input side and the connection terminal portion 9 on the lower side is the output side. A bottom plate 13 is attached to the bottom surface of the main switch 2 with screws 12, and the bottom plate 13 is connected to a frame 22 described below to be locked to a positioning / mounting portion 15 and fixed with screws 14.
Reference numeral 18 is a connecting path for branching, one end of which is connected to the output-side connecting terminal portion 9, and 47 is a cover plate of the output-side connecting terminal portion 9.

The branch switch 3 has an opening / closing handle 16 projecting from an upper surface 31, has connection terminal portions 17 at both ends, and attaches a bottom surface to the body 1.
Are arranged side by side on the master switchgear 2 so that the connection direction thereof is the same as the connection direction of the connection terminal portion 9 of the master switchgear 2. In the embodiment, the branch switches 3 are vertically arranged in two horizontal rows and arranged in parallel with the master switch 2, and the connection terminal portion 1 facing between the two rows.
7 as the input side, and a pair of 200V branch bars 18 between the two rows
And a 100V branch bar 19 between them, and each end is connected to the end of the connecting path 18 by a connecting screw 21.
8 and 19 are connected to the connection terminal portion 17 by connection pieces. Further, a pair of frames 22 are attached to the bottom surface of the branch switch 3 with screws 23, the frames 22 are connected to the bottom plate 13 and locked to the positioning / attaching portion 15 of the body 1 and attached with screws 14. The frame 22 raises the branch switch 3 to the bottom so that the main switch 2 and the top of the branch switch 3 are flush with each other. 40 is a cover plate.

Main switch 2 and a plurality of branch switches 3
Is attached close to the body 1, and a wiring passage 45 extending in the connecting direction of the connection terminal portion 9 is formed on one side of the inner unit formed by the main body switch 2 and the branch switch 3 of the body 1. ,
A load wire is wired to the output side connection terminal portion 17 of the lower row of the branch switch 3 and is output to the outside from the wire knockout portion 11 through the wiring passage 45.

The cover 4 is made of synthetic resin and has a side wall 46 that abuts the side wall 5 of the body 1 to cover the body 1. Further, the groove 5 into which the positioning rib 50 is fitted in the side wall 46
3 is formed (FIG. 9). In the embodiment, the sidewall 46
A rib 54 is provided upright on the inner surface of the groove 54, and a groove 53 is formed across the tip of the rib 54 and the end surface of the side wall 46. Further, the projecting hole 2 for projecting the opening / closing handles 8 and 16 on the upper surface 34
5, 26, and a protrusion 35 that is detachably engaged with the hook 7 is formed. The protrusion 35 can be elastically locked to the hooks 7 and 7'by pushing it into the body 1 while fitting the groove 53 into the positioning rib 50, and when detaching it, push the hook 7'from below to remove the hook 7'from the protrusion 35. Do it. 27
Is a curved portion, and 28 is a central portion having a convex curved surface.

According to this embodiment, the positioning rib 5
The side walls 5 and 46 can be easily butted by the engagement of the groove 0 and the groove 53, and the side wall 5 is less likely to bend even if the side wall 5 is thinned by the holding rib 51. Further positioning ribs 50
Since the thickness of the side wall 5 in which the holding rib 51 is formed is thick in a predetermined range A in the circumferential direction, the sink marks at the time of forming the positioning rib 50 and the holding rib 51 are reduced, and the side wall 5 is formed.
Is less likely to appear on the outer surface of the positioning rib 50
Can be thick and strong.

Further, since the predetermined range A is set to a length exceeding about three times the thickness of the side wall in each of the two circumferential directions from the holding rib 51, the sink mark on the molding can be made less noticeable and the side wall 5 is thickened. Can be minimized. In the present invention, the positioning rib 50 is formed on the cover 4,
The groove 54 may be formed in the body 1.

[0018]

According to the distribution board of the first aspect, the side walls can be easily butted by the engagement of the positioning ribs and the grooves, and the side walls are not easily bent even if the side walls are thinned by the holding ribs. Furthermore, since the wall thickness of a predetermined range in the circumferential direction including the holding rib of the side wall where the positioning rib is formed is formed thick, the sink mark at the time of molding of the positioning rib and the holding rib is reduced, and it is difficult to appear on the outer surface of the side wall. The positioning rib can be thick and strong.

According to the distribution board of claim 2, in claim 1, the predetermined range has a length exceeding two times the thickness of the side wall in each of the two circumferential directions from the holding rib. In addition to the effect of item 1, the sink mark in molding can be made inconspicuous and the range of thickening the side wall can be minimized.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the entire appearance.

FIG. 3 is a plan view with a cover removed.

FIG. 4 is a sectional view of a portion of a branch switch.

FIG. 5 is a cross-sectional view of a distribution board.

FIG. 6 is a perspective view of a positioning rib portion.

FIG. 7 is a plan view thereof.

FIG. 8 is an explanatory diagram illustrating the dimensional relationship thereof.

FIG. 9 is a partial cross-sectional view of a combined state of the body and the cover.

[Explanation of symbols]

 1 Body 2 Main Switch 3 Branch Switch 4 Cover 5 Side Wall 46 Side Wall 50 Positioning Rib 51 Holding Rib 53 Groove A Predetermined Range

Claims (2)

[Claims] 1. A synthetic resin body having a side wall, a main switch and a branch switch mounted in the body, and a synthetic resin having a side wall abutting the side wall of the body and covering the body. A cover made of metal, and a positioning rib is projected on the abutting surface of one of the side walls of the body and the cover, and a groove into which the positioning rib is fitted is formed on the other side wall, and an inner surface of the side wall on which the positioning rib is formed is formed. A distribution board characterized in that a holding rib is provided upright, and a thickness of a predetermined range including the positioning rib in the circumferential direction of the side wall is thicker than the thickness of the side wall. 2. The distribution board according to claim 1, wherein the predetermined range is a length that exceeds about three times the thickness of the side wall in each of two circumferential directions from the holding rib.