JPH08293679A - Mounting structure of board onto housing - Google Patents

Abstract

PURPOSE: To mount a board firmly so that the board may not come off and house the board straight absorbing a warp of the board. CONSTITUTION: A housing A is constituted of a body 1 in which components are to be laterally set and a cover 2 to close an opening of the body 1. In upper and lower walls of the body 1 which face each other, grooves are so formed as to be extended inwards from an opening face of the body 1. A board is slid along these grooves to be housed in the body 1 and upper and lower parts of the board 1 are held in the grooves. In this mounting structure, recessed or projecting fitting sections are formed in side faces of the body 1 and the cover 2 on which the board 4 abut when it is housed in the body 1 and in parts of the board 1 corresponding to these parts of the body 1 and the cover 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a board used in a housing used for mounting a board such as a printed board in an electric device such as an earth leakage breaker.

[0002]

2. Description of the Related Art When a circuit board is attached to a housing by a conventional earth leakage breaker, the housing is composed of a body in which parts are laterally fitted and a cover that closes the opening of the body, and faces inward from the opening surface of the body. The slide grooves extending in the vertical direction are formed in the upper and lower walls facing each other, and the substrate is accommodated in the body by sliding the substrate along these slide grooves, and the upper and lower sides of the substrate are held by the slide grooves.

[0003]

However, in the above-described conventional example, since the substrate is held only by fitting the upper and lower sides of the substrate into the slide grooves, the upper and lower sides along the left-right direction of the substrate in the manufacturing process. When the length in the direction becomes shorter, the substrate may be displaced laterally from the upper and lower slide grooves and come off.

The present invention has been made in view of the above problems, and the object of the present invention is to mount the substrate securely so as not to come off, and to absorb the warp of the substrate to straighten it. An object of the present invention is to provide a structure for mounting a substrate on a housing that can be stored.

[0005]

In order to achieve the above object, a mounting structure of a substrate to a housing according to the present invention comprises a housing A composed of a body 1 in which components are laterally fitted and a cover 2 for closing an opening of the body 1. Then, at least the slide grooves 3 extending inward from the opening surface of the body 1 are formed in the opposing upper and lower walls, and the board 4 is housed in the body 1 by sliding along the slide grooves 3 and at the same time. In which the upper and lower sides of the are held by the slide groove 3,
A concave-convex fitting portion is provided on the side surface of the body 1 and the side surface of the cover 2 that are in contact with the substrate 4 in a state where the substrate 4 is housed in the body 1, and the substrate 4 facing these side surfaces.

It is also preferable that a plurality of the concave-convex fitting portions are provided on one side surface.

[0007]

According to the above construction, the concave-convex fitting portion is formed on the side surface of the body 1 and the side surface of the cover 2 which are in contact with the substrate 4 in the state where the substrate 4 is housed in the body 1 and the substrate 4 facing these side surfaces. By providing it, in addition to the holding by the slide groove 3, the board 4 and the side surface of the body 1 and the cover 2 can be held by the concave and convex fitting, and the board 4 can be securely held so as not to come off. Even if the substrate 4 is deformed in the left-right direction with respect to the vertical direction, the warp of the substrate 4 can be absorbed and the substrate 4 can be stored straight.

If a plurality of the concave-convex fitting portions are provided on one side surface, the warp of the substrate 4 can be further absorbed and the substrate 4 can be stored straightly, so that the substrate 4 does not come off from the slide groove 3. it can.

[0009]

EXAMPLES First, the examples shown in FIGS. 1 to 6 will be described. In the case of the present embodiment, the one used for the earth leakage breaker is shown.
The housing A of the earth leakage breaker is composed of a body 1 and a cover 2. When the cover 2 is removed, parts are inserted laterally from the opening of the body 1 and the cover 2 is inserted into the opening of the body 1.
It is possible to assemble it by attaching and fastening the assembly screw 6. The components to be incorporated in the body 1 include a trip opening / closing mechanism 7, an operating handle 8, a fixed terminal plate 9, a movable contact plate 10, and an overcurrent detection block 1.
1, a short-circuit current detection block 12, an arc extinguishing block 13, a zero-phase current transformer 14 for detecting electric leakage, a substrate 4 having an electric leakage signal processing circuit, an electromagnet device 15, and the like.

The board 4 is provided with a leakage signal processing circuit by forming a circuit on a printed board or mounting electronic parts, and is attached to the housing A as follows.
Slide grooves 3 are provided in parallel on the upper and lower sides of the body 1, and the upper and lower sides of the substrate 4 are inserted into the slide grooves 3 from the opening of the body 1 and the substrate 4 is slid in the depth direction to place the substrate 4 inside the body 1. It can be stored. When the substrate 4 is housed in the body 1, the upper and lower sides of the substrate 4 are supported by the slide groove 3. The cover 2 is also provided with upper and lower slide grooves 3, and the upper and lower sides of the substrate 4 are supported by the slide groove 3 of the cover 2 with the cover 2 attached to the body 1. A recess 16 is provided in the bottom wall of the body 1, and a protrusion 17 is provided at one side end of the substrate 4, and the protrusion 17 is fitted in the recess 16 when the substrate 4 is stored in the body 1. . A concave portion 16 is provided on the other side end of the substrate 4, and a convex portion 17 is provided on the inner surface of the cover 2. When the cover 2 is attached to the body 1, the convex portion 17 fits into the concave portion 16. is there. When the substrate 4 is attached in this manner, the slide groove 3 is located above and below the substrate 4.
The concave portions 16 and the convex portions 17 are fitted on both side edges of the substrate 4 to support the substrate 4, and the substrate 4 is securely attached so as not to come off. At this time, even if there is a warp in the substrate 4, the warp of the substrate 4 can be absorbed and the substrate 4 can be stored straight.

Next, the embodiment shown in FIG. 7 will be described. A recess 16 is provided on the bottom wall of the body 1, a protrusion 17 is provided on one side end of the substrate 4, and the protrusion 17 is fitted into the recess 16 when the substrate 4 is stored in the body 1. Further, a convex portion 17 is provided on the other side end of the substrate 4, and a concave portion 16 is provided on the inner surface of the cover 2. The convex portion 17 fits into the concave portion 16 when the cover 2 is attached to the body 1. is there. Also in this embodiment, the upper and lower ends of the substrate 4 are inserted into and supported by the slide groove 3.

Next, the embodiment shown in FIG. 8 will be described. A convex portion 17 is provided on the bottom wall of the body 1, and a concave portion 16 is provided on one side end of the substrate 4, and the convex portion 17 is fitted into the concave portion 16 when the substrate 4 is stored in the body 1. A concave portion 16 is provided on the other side end of the substrate 4, and a convex portion 17 is provided on the inner surface of the cover 2. The convex portion 17 is fitted into the concave portion 16 when the cover 2 is attached to the body 1. . Also in this embodiment, the upper and lower ends of the substrate 4 are inserted into and supported by the slide groove 3.

Next, the embodiment shown in FIG. 9 will be described. A convex portion 17 is provided on an upper portion of a bottom wall of the body 1, a concave portion 16 is provided on a lower portion thereof, a concave portion 16 is provided on an upper portion of one side end of the substrate 4, and a convex portion 17 is provided on a lower portion thereof. 1 when the substrate 4 is stored in
6 and the convex portion 17 are fitted together. The concave portion 16 is provided on the upper side of the other side end of the substrate 4, the convex portion 17 is provided on the lower portion, the convex portion 17 is provided on the upper portion of the inner surface of the cover 2, and the concave portion 16 is provided on the lower portion. When the cover 2 is attached to the opening, the concave portion 16 and the convex portion 17 are fitted in the upper and lower portions, respectively. Also in this embodiment, the upper and lower ends of the substrate 4 are inserted into and supported by the slide groove 3. When the board 4 is attached in this manner, the side edges on both sides of the board 4 are fitted in the upper and lower portions in a concavo-convex manner to attach the board 4, and the board 4 is surely attached.

[0014]

As described above, according to the present invention, the concave and convex fitting portions are provided on the side surface of the body and the side surface of the cover that come into contact with the substrate in the state where the substrate is housed in the body and the substrate facing these side surfaces. In addition to holding by the slide groove, the board and the side surface of the body and cover can be held by concave and convex fitting so that the board can be securely held so as not to come off. Even if the substrate is deformed, the warp of the substrate can be absorbed and the substrate can be stored straight.

According to the second aspect of the present invention, since a plurality of concave-convex fitting portions are provided on one side surface, the warp of the board can be further absorbed and the board can be stored straight. At the same time, the substrate can be firmly attached so as not to come off from the slide groove.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view showing the same as above.

FIG. 3 is a front sectional view of the same.

FIG. 4 is an exploded perspective view of the entire same as above.

FIG. 5 is a front view of the same body.

FIG. 6 is a front view of the above cover.

FIG. 7 is a side sectional view of another embodiment of the above.

FIG. 8 is a side sectional view of still another embodiment of the same.

FIG. 9 is a side sectional view of still another embodiment of the same.

[Explanation of symbols]

 A housing 1 body 2 cover 3 slide groove 4 substrate

Claims (2)

[Claims] 1. A housing is constituted by a body in which parts are laterally fitted and a cover that closes an opening of the body, and at least slide grooves extending inward from an opening surface of the body are formed in opposed upper and lower walls, In the mounting structure of the board to the housing in which the board is housed in the body by sliding along the slide grooves and the board is held by the slide grooves, the body that abuts the board in the state where the board is housed in the body And a side surface of the cover and a board facing the side surface are provided with concave and convex fitting portions. 2. The structure for mounting a substrate on a housing according to claim 1, wherein a plurality of the concave-convex fitting portions are provided on one side surface.