JPH0438443Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electronic component having a terminal member with a fuse portion, such as a heat generator incorporated in an electric mosquito repellent.

<Prior Art> Conventionally, as a heat generator used in an electric mosquito repellent, there is a heat generator as shown in FIG. 5, a schematic cross section of which is shown. This heating element houses a heating element 11, an upper terminal board 12, and a lower terminal board 13 inside an insulating case 10 with an open top surface, and
The open part of the case 10 is covered with a metal cover 14. Note that an insulating plate 15 is placed between the top surface of the case 10 and the inside top surface of the cover 14, and the top surface of the cover 14 is used as a heat radiation surface 14a.

Upper terminal board 12 used in such a heat generator
As shown in FIG. The upper terminal plate 12 is composed of a main body portion 16, a fuse portion 17, and a lead portion 18. The main body part 16 has a flat plate shape that can be brought into close contact with the upper surface of the heating element 11, and a fuse part 17 extends from one end of the main body part 16 on the same plane as the widening surface 16a of the main body part 16.

The lead portion 18 extends through the fuse portion 17 in a direction intersecting the widening surface 16a of the main body portion 16, and its inner end portion 18a crosses the widening surface 16a of the main body portion 16.
It is provided on the same plane as 6a. Further, the outer end portion 18b of the lead portion 18 is projected to the outside of the case 10 through a through hole 10b provided at the bottom of the case 10. Note that this upper terminal plate 12
is placed on and supported by an inner wall 10c provided within the case 10.

The fuse part 17 of this upper terminal board 12 may be damaged due to some abnormality in the heating element 11 which is the main body of the heating element.
If an overcurrent flows through the lead portion 18, it will melt and the lead portion 18
It has a function of interrupting the power supply to the main body part 16 to avoid the spread of an abnormal situation.

<Problems to be solved by the invention> By the way, in the upper terminal board 12 having the above structure, if the fuse part 17 blows out due to the flow of an overcurrent, the main body part 16 and the lead part 18 are divided and become unfixed. . Therefore, the main body portion 16 becomes movable along the upper surface of the heating element 11. On the other hand, the lead portion 18 falls down centering on the portion passing through the through hole 10b, and is also movable in the penetrating direction. Therefore, fuse part 1
After fusing 7, the divided main body part 16 and lead part 1
8 can move and come into contact with each other, causing a short circuit and aggravating the abnormal situation.

In view of these conventional problems, the present invention has been developed to provide a terminal board in which even if the fuse part melts, the main body part and the lead part will not come into contact with each other, and the abnormal situation will not be amplified due to a short circuit between the two parts. The purpose is to provide electronic components that have

<Means for solving the problem> In order to achieve this purpose, this invention
A lead portion is formed to extend from one end of the terminal member through the fuse portion in a direction intersecting the widening surface of the main body portion, and the inner end portion of the lead portion is spaced apart from the widening surface of the main body portion. A locking piece is formed at a portion of the lead portion that penetrates the case outer wall to engage with the case outer wall and fix the position.

<Operation> According to the above configuration, even if the fuse part melts, the lead part will not move relative to the case, and even if the main body part moves, there will be a gap between the main body part and the lead part. Therefore, the two parts do not touch each other.

<Example> Hereinafter, the present invention will be described in detail based on an illustrated example in which the present invention is applied to a heat generator for an electric mosquito repellent.

FIG. 1 is a schematic sectional view of a heat generator as an electronic component, and FIG. 2 is a perspective view of an upper terminal board as a terminal member. The heat generator and the upper terminal plate in these figures correspond to the heat generator in FIG. 5 and the upper terminal plate in FIG. 6, respectively. Therefore,
Corresponding parts are given the same reference numerals.

The heating element in these figures includes a case 10 made of an electrically insulating material such as ceramic or heat-resistant resin, and a heating element 1 such as a positive temperature coefficient thermistor.
1, an upper terminal plate 12 that tightly contacts the upper surface of the heating element 11, a lower terminal plate 13 that tightly supports the lower surface of the heating element 11, a cover 14 made of a metal plate such as a stainless steel plate, and a cover 14 made of a metal plate such as a mica plate. Insulating board 15
It is equipped with

The case 10 has a storage section 10a that is open upward.
The heating element 11 sandwiched between the upper terminal plate 12 and the lower terminal plate 13 is housed in the housing portion 10a. This lower terminal plate 13 is placed on the lower surface of the housing portion 10a of the case 10, and supports the heating element 11.

As shown in FIG. 2, the upper terminal board 12 is composed of a main body portion 16, a fuse portion 17, and a lead portion 18. Main body portion 1 in this upper terminal plate 12
6 has a flat plate shape that can be brought into close contact with the upper surface of the heating element 11;
One end portion of this main body portion 16 extends downward or diagonally downward to form an extended portion 16b. A narrow fuse portion 17 extending parallel to the edge of the main body portion 16 extends from the extending member 16b, and a lead portion 18 is formed through the fuse portion 17.

This lead portion 18 is connected to the widening surface 16 of the main body portion 16.
The lead portion 1 extends in a direction intersecting with a.
The inner end 18a of 8 is the widening surface 16a of the main body 16.
It is arranged at a position spaced apart by a required distance D from. In this case, even if the lead part 18 moves in the direction of arrow A after the fuse part 17 is blown, which will be described later, the fuse part 17 and the main body part 16 are spread apart to avoid contact between the lead part 18 and the extension member 16b. It is effective to configure the spacing between the surfaces 16a to widen in the direction away from the extending member 16b.

Further, an outer end portion 18b of the lead portion 18 projects outside the case 10 through a through hole 10b formed in an outer wall portion of the case 10, and a lead wire 20 is connected to the outer end portion 18b. Then, the inner end 18 of the lead portion 18
An upper locking piece 18c that abuts and engages with the inner surface of the outer wall of the case 10 is formed on the side a, and the lead portion 1
A lower locking piece 18d that abuts and engages with the outer wall of the case 10 is formed on the outer end 18b side of the case 10.
Note that these locking pieces 18c and 18d may be processed into the lead portion 18 itself, or may be attached to separate members. In particular, regarding the lower locking piece 18d, after the lead portion 18 is inserted into the through hole 10b from the inner side of the outer wall of the case 10, one end thereof expands on the outer surface of the outer wall. It's okay if it's hot.

3 and 4 show other embodiments of the upper terminal plate 12. FIG. In the upper terminal plate 12 in FIG.
An extension part 16b is extended on the same plane as the lead part 18, and this extension part 16b is bent in the same direction as the lead part 18 in the middle part thereof.
A fuse portion 17 is formed that runs parallel to the edge of. Further, in FIG. 4, the fuse portion 17 is directly extended obliquely downward from one end portion of the main body portion 16 without forming the extending portion 16b.

The outer surface of the case 10 is covered with a cover 14 except for the lower surface. An insulating plate (a sheet may be used) 15 is sandwiched between the inside of the upper surface of this cover 14 and the upper surface of the case 10, and this portion of the cover 1
The upper surface of 4 is used as a heat radiation surface 14a. In addition, cover 1
4 may cover at least the upper surface of the case 10.

Such a heat generator is incorporated into the main body 21 of the electric mosquito repellent so that its heat radiation surface 14a is exposed upward. Then, when the insecticide mat M is placed on the center of the heat radiation surface 14a and heated by the electronic components, the insecticide component is released from the insecticide mat M.

<Effects of the invention> As described above, according to the invention, even if the fuse part of the terminal member incorporated in an electronic component that is a heat generator blows, the main body part and the lead part are separated from each other, and Since the lead part does not move with respect to the case, there is no possibility that the main body part and the lead part will come into contact with each other and cause a short circuit, thereby preventing an abnormal situation from expanding.

[Brief explanation of the drawing]

1 to 4 relate to the present invention, in which FIG. 1 is a schematic sectional view of an electronic component that is a heat generator, FIG. 2 is a perspective view showing an embodiment of an upper terminal plate that is a terminal member, and FIG. 4 are perspective views showing other embodiments of the upper terminal board. 5 and 6 relate to a conventional example, where FIG. 5 is a schematic sectional view of an electronic component, and FIG. 6 is a perspective view of an upper terminal board. DESCRIPTION OF SYMBOLS 10...Case, 12...Upper terminal board (terminal member), 16...Body part, 16a...Broad surface of main body part, 17...Fuse part, 18...Lead part,
18a...inner end of the lead part, 18b...outer end of the lead part, 18c, 18d...locking piece.

Claims (1)

[Scope of Claim for Utility Model Registration] An electronic component in which a case is provided with a terminal member consisting of a main body part, a fuse part, and a lead part in contact with the main body of the electronic component, in which the fuse part is connected from one end of the main body part of the terminal member. A lead portion is formed to extend in a direction intersecting the widening surface of the main body through the lead portion, and an inner end of the lead portion is separated from the widening surface of the main body, and the outer wall of the case of the lead portion is spaced apart from the widening surface of the main body. What is claimed is: 1. An electronic component characterized in that a locking piece is formed at a location that penetrates through the case and engages with the outer wall of the case to fix the position.