JP2003339109A - Terminal-supporting hole structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal supporting hole structure capable of obtaining radiation effect due to excessive heating of a terminal, without losing the positioning capability of the terminal. <P>SOLUTION: Tab terminals 52, 52 are inserted in the terminal-supporting holes 14, 14 formed at a wall part 13 in the body 12 of an electrical junction box 11 to be supported in the terminal-supporting hole structure 10. The terminal-supporting holes 14, 14 meet a sectional form which is orthogonal to the longitudinal direction of the plate-shaped tab terminals 52, 52, and have a pair of notched parts 15, 15 of which the inner surfaces separate from a surface and a back surface of the tab terminal 52 by more than a prescribed dimension. The notched parts 15, 15 are set in a substantially U shape, orthogonal to the penetration direction of the terminal supporting hole 14, and provided in a direction so as to be separated from each other. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal support hole structure, and more particularly to a terminal support hole structure for supporting a plate-shaped tab terminal provided upright in a fuse cavity of an electric connection box mounted on an automobile. .

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5 (A), a box-shaped fuse cavity 51 for connecting a fuse (not shown) in an electric connection box 50 mounted in, for example, an automobile.
Inside, tab-shaped tab terminals 52, which are connected to fuse terminals,
52 are erected. As shown in FIG. 5 (B), these tab terminals 52, 52 are inserted into and supported by terminal support holes 55, 55 penetrating the wall portion 54 of the main body 53 of the electric junction box 50 in the thickness direction. . As shown in FIG. 5C, the terminal support hole 55 has a rectangular shape corresponding to the cross-sectional shape orthogonal to the longitudinal direction of the tab terminal 52, and its inner surface has four side surfaces (front surface, It is formed so as to face the back surface, each end surface) with a constant gap.

[0003]

By the way, in the conventional terminal supporting hole 55, the gaps between the four sides of the tab terminal are set to be extremely small in order to position the tab terminal 52 at a predetermined position. Therefore, for example, when the tab terminal 52 generates excessive heat, the conventional terminal support hole 55 is melted from the inner surface, and there is a problem that the melting damage range is enlarged.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a terminal support hole structure in which the terminal generates excessive heat and a heat radiation effect is obtained without impairing the positioning property of the terminal. To do.

[0005]

In order to achieve the above-mentioned object, according to the present invention, as described in claim 1, a wall portion of the main body of the electronic device is installed to stand a terminal on the main body of the electronic device. A terminal support hole structure for inserting and supporting the terminal in a terminal support hole penetrating in the thickness direction, wherein the terminal support hole is
It is characterized in that the inner surface of the terminal support hole has a cutout portion separated from the side surface of the terminal by a predetermined dimension or more.

Here, in addition to the above-mentioned plate-shaped tab terminals, round bar-shaped terminals are assumed as the terminals. That is, for example, in the case of a tab terminal in the form of a plate, the notch may be provided in at least one of the inner surfaces of the terminal supporting hole facing the front surface, the back surface, and the pair of end surfaces. When notches are provided on all of the inner surfaces of the terminal support holes, the terminal support holes may be formed so as to leave portions close to the front surface, the back surface, and the pair of end surfaces less than a predetermined dimension in order to maintain the positioning of the terminals. Good. Specifically, in the case of a plate-shaped tab terminal, for example, notches may be provided in a substantially U shape on the front surface and the back surface, or four locations may be provided so as to correspond to the corner portions of the cross section.

In the terminal supporting hole structure thus constructed, since the notch which is separated from the side surface of the terminal by a predetermined dimension or more is provided on the inner surface of the terminal supporting hole, even if the terminal generates excessive heat. The heat can be quickly dissipated, and the area where melting loss starts is smaller than in the conventional case, so that the expansion of the melting loss range can be prevented, and the above-described object can be achieved by these.

According to a second aspect of the present invention, a pair of the cutout portions are provided, and the cutout portions are provided in a direction orthogonal to the penetrating direction of the terminal support hole and away from each other. It is characterized by On the other hand, according to the present invention, as described in claim 3, the terminal has a rectangular sectional shape orthogonal to the longitudinal direction,
It is characterized in that it has a plurality of the cutouts, and each of the cutouts is provided corresponding to a corner of the cross section of the terminal.
In the terminal support hole structure as described above, since the plurality of cutouts are provided, the heat dissipation effect can be improved and the expansion of the melting loss range can be reliably prevented.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. In the embodiments described below, the members already described in FIG. 5 will be denoted by the same or corresponding reference numerals in the drawing to simplify or omit the description.

As shown in FIG. 1, a terminal supporting hole structure 10 according to a first embodiment of the present invention has a terminal supporting hole formed in a wall portion 13 of a main body 12 of an electric connection box 11 mounted on an automobile or the like. The tab terminals 52, 52 are inserted into and supported by the 14, 14.
The terminal support holes 14 and 14 correspond to the cross-sectional shape orthogonal to the longitudinal direction of the plate-shaped tab terminals 52 and 52, and a pair of inner surfaces separated from the front and back surfaces of the tab terminal 52 by a predetermined dimension or more. It has notches 15 and 15. The notches 15 and 15 are substantially U-shaped, and are provided in a direction orthogonal to the penetrating direction of the terminal support hole 14 and away from each other.

These cutouts 15 and 15 are not formed so as to be separated from the entire front surface and the entire back surface of the tab terminal 52, but a part of the inner surface of the terminal support hole 14 of the tab terminal 52 is formed. It is provided so that both end faces face each other as if they were held. Therefore, the terminal support holes 14 and 14 are not impaired in the positioning property as compared with the conventional case even if the notch portions 15 and 15 are provided.

According to the first embodiment described above, the tab terminal
Since the notch portions 15 and 15 which are separated from the front surface and the back surface of 52 by a predetermined distance or more are provided on the inner surface of the terminal support hole 14,
Even if the tab terminal 52 generates excessive heat, heat can be quickly radiated to the outside through the cutouts 15 and 15, and the area where melting damage starts is smaller than in the conventional case, so that expansion of the melting damage range can be prevented.

In the terminal support hole structure 20 of the second embodiment shown in FIGS. 2A and 2B, the terminal support hole 24 is provided with four notches 25. These notches 25 are provided on both sides in the width direction on the front surface and the back surface of the tab terminal 52, respectively. Further, in the terminal support hole structure 30 of the third embodiment shown in FIGS. 3A and 3B, the terminal support hole 24 is provided with four notches 25. These notches 25
Are provided so as to correspond to the corners of the cross section of the tab terminal 52. Also in the second embodiment and the third embodiment as described above, the cutouts 25, 35 which are separated from the front surface and the back surface of the tab terminal 52 by a predetermined dimension or more are provided on the inner surfaces of the terminal support holes 24, 35. Therefore, similar to the above-described first embodiment, good heat dissipation can be obtained and the expansion of the melting loss range can be prevented.

The terminal support hole structure 40 of the fourth embodiment shown in FIGS.
A circular terminal support hole 42 for inserting and supporting is provided in the wall portion 43, and a pair of cutout portions 45, 45 are provided along the radial direction of the terminal support hole 42. These notches
45 and 45 are substantially U-shaped, and the width dimension thereof is set smaller than the inner diameter dimension of the terminal support hole 42. Therefore, the terminal support hole
The positioning of 42 is not impaired. Also in such a fourth embodiment, the same effects as those of the above-described first to third embodiments can be obtained.

The present invention is not limited to the above-described embodiments, but can be appropriately modified and improved. For example, the main body exemplified in each of the above-mentioned embodiments,
The material, shape, size, form, number, location, etc. of the terminals, terminal support holes, notches, etc. are arbitrary and are not limited as long as the present invention can be achieved.

[0016]

As described above, according to the present invention, as described in claim 1, the notch which is separated from the side surface of the terminal by the predetermined dimension or more is provided on the inner surface of the terminal supporting hole. Therefore, even if the terminal heats up excessively, heat can be quickly dissipated, and since the point where melting loss starts is smaller than in the conventional case, the expansion of the melting loss range can be prevented, and these can achieve the above-mentioned object.

According to the invention described in claim 2,
The pair of cutouts are provided in a direction orthogonal to the penetrating direction of the terminal support hole and away from each other. According to the invention described in claim 3, the plurality of cutouts are provided in correspondence with the cross-sectional corners of the terminal. Therefore, the heat dissipation effect can be improved and the expansion of the melting loss range can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a plan view, a cross-sectional view, and a perspective view of relevant parts showing a first embodiment according to the present invention.

FIG. 2 is a plan view and a perspective view of a main part showing a second embodiment according to the present invention.

FIG. 3 is a plan view and a perspective view of a main part showing a third embodiment according to the present invention.

FIG. 4 is a plan view and a perspective view of an essential part showing a fourth embodiment according to the present invention.

FIG. 5 is a plan view, a cross-sectional view, and a perspective view of a main part showing a conventional example.

[Explanation of symbols]

10, 20, 30, 40 terminal support hole structure 11 Electrical connection box (electronic equipment) 12, 22, 32, 42 main body 13,23,33,43 Wall 14, 24, 34, 44 Terminal support holes 15, 25, 35, 45 Notch

Claims (3)

[Claims] 1. A terminal supporting hole structure for supporting a terminal by vertically inserting the terminal into a terminal supporting hole penetrating a wall portion of the main body in a thickness direction in order to erect the terminal on the main body of the electronic device, A terminal support hole structure, wherein the terminal support hole has a notch in which an inner surface of the terminal support hole is separated from a side surface of the terminal by a predetermined dimension or more. 2. The pair of cutouts is provided, and each cutout is provided in a direction orthogonal to a penetrating direction of the terminal support hole and away from each other. Terminal support hole structure. 3. The terminal has a rectangular cross-section orthogonal to the longitudinal direction and has a plurality of the cutouts, each cutout being provided corresponding to a cross-sectional corner of the terminal. The terminal support hole structure according to claim 1, wherein: