JP2579740Y2 - Fuse holder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse holder for holding a glass tube fuse on a printed circuit board.

[0002]

2. Description of the Related Art In the case of a device which consumes a large amount of power, the substrate of the control circuit itself generates a large amount of heat. Therefore, in order to prevent unnecessary heat from being transmitted to the fuse, it is necessary to float the fuse off the substrate. The fuse mounting structure for this purpose is to connect each end of the glass tube fuse to the circuit pattern on the board with a somewhat longer lead wire, or to elastically hold the glass tube portion of the fuse In this case, a holder member made of a synthetic resin is mounted on the substrate.

[0003] These conventional configurations have a drawback in that no other element can be provided around the fuse on the substrate in consideration of the case where the fuse has fallen. In particular, in the latter case, the disconnection of the fuse is hard to be seen because the glass tube portion is held, and the vibration of the substrate is easily transmitted by the holder member. There is a disadvantage that it is easy.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve such disadvantages of the prior art, and its main purpose is to place another element at a position relatively close to the fuse. An object of the present invention is to provide an improved fuse holder that can be provided and that is less likely to transmit vibration to the fuse.

[0005]

According to the present invention, such an object is directly connected to each of the electrode portions at both ends in the axial direction.
The glass fuse connected to the circuit pattern of the board with the lead wire is kept floating from the printed board.
To the configuration of the fuse holder made of a synthetic resin material, both
A holder body having a holding piece for elastically holding each of the electrode portions, and a cross section orthogonal to the axis of the fuse having a shape of C
A pair of leg pieces extending from the lower portion of the holder body diagonally-outwardly and downwardly to form a shape, each of the pair of leg pieces
Possess a projection extending from the lower end in the direction along the axis of the fuse people, pre leg pieces and projections a elastically deformable
This is achieved by making contact with the printed circuit board with elasticity . In particular, it is preferable that grooves are provided at both ends in the axial direction of the holding piece to support lead wires connected to both ends in the axial direction of the fuse.

[0006]

According to this structure, the glass tube is exposed.
This makes it easier to see the disconnection of the fuse. Further, since the holding piece covers the electrode portion of the fuse, it is possible to reduce a fear of a short circuit when the holding piece comes into contact with another element. And e
Since Ruda can absorb the vibrations in the elasticity of the leg pieces and the projections on which is not fixed to the substrate, the influence of vibration
Can be reduced . In addition to this, if the lead wire is supported by the groove, the lead wire is less likely to bend, and the reliability in preventing disconnection can be further improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in detail with reference to specific embodiments shown in the accompanying drawings.

FIG. 1 (A, B, C) shows a fuse holder constructed according to the present invention. This fuse holder 1 is made of a relatively soft synthetic resin material such as nylon, which is rich in elasticity, and elastically holds metal portions 3 constituting electrode portions at each end of a glass tube fuse 2 (see FIG. 2). ), A holder body 5 formed by connecting two clip portions 4 each formed of an arc-shaped holding piece having an open upper portion, and a cross section orthogonal to the axis of the fuse 2 having a shape of c.
A pair of leg pieces 6 extending downward and obliquely outward from the lower part of the holder body 5 so as to form
From the lower edge of the fuse 2 in the direction along the axis of the fuse 2 and projecting from both ends in the axial direction. A pair of rib pieces 8 project from the end faces of both clip portions 4, respectively, and a vertical groove 9 is formed between them. The leg pieces 6 may be divided and formed at a plurality of locations according to the axial size of the fuse 2.

When using the fuse holder 1, first, the metal parts 3 on both ends of the glass tube fuse 2 are inserted into the clip part 4 of the holder body 5. Next, the intermediate portion of the lead wire 10 connected to each end of the fuse 2 is inserted into the groove 9 on the end face of the clip portion 4, and is loosely sandwiched between the ribs 8. Connect to

In the case of a device which consumes a large amount of power, the substrate of the control circuit itself generates a large amount of heat. However, according to the configuration of the present invention, the fuse 2 is mounted in a state of being floated from the substrate 11 and the holder body is mounted. Since it is shielded from the substrate 11 at 5, unnecessary heat is not transmitted to the fuse 2.
Further, since the holder main body 5 comes into contact with the surface of the substrate 11 by the projections 7 including the edges of the leg pieces 6 extending downward and obliquely outward, extremely high stability is obtained. Vibration components in each direction are suitably absorbed by the flexure of itself and the flexure of the projection 7 projecting from the leg piece 6 in the axial direction. In addition to this, since the lead wire 10 is supported by the groove 9, the directionality is determined and unnecessary bending is prevented.

[0011]

As described above, according to the present invention, the fuse holder is not fixed to the substrate, but only the leg and the projection protruding from the leg are brought into contact with the substrate. Are absorbed by the leg pieces and the projections, and the lead wire is supported by the groove, so that the lead wire is hardly broken. Also,
Even when a fuse is previously mounted on the holder and mounted on the substrate, the stability is improved, and the workability is improved. In addition, since the metal parts at both ends of the fuse are held by the holding pieces, the glass tube part is exposed, making it easier to see the fuse breakage. There is no need to worry about a short circuit at the time of contact.

[Brief description of the drawings]

1A and 1B are external views of a fuse holder according to the present invention, wherein FIG. 1A is a top view, FIG. 1B is a front view, and FIG. 1C is a side view.

FIG. 2 is a perspective view showing a state of use of the fuse holder according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuse holder 2 Glass tube fuse 3 Metal part 4 Clip part 5 Holder main body 6 Leg piece 7 Projection 8 Rib piece 9 Groove 10 Lead wire 11 Substrate

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Ken Shinomiya 184 Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Nifco Co., Ltd. (56) References Real-life 1982-34947 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) H01H 85/22

Claims (2)

(57) [Scope of request for utility model registration] 1. A direct connection to each of the electrode portions at both ends in the axial direction.
A fuse holder made of a synthetic resin material for holding the glass tube fuse connected to the circuit pattern of the substrate with the lead wire floating above the printed circuit board, wherein each of the two electrode portions is A holder body provided with a holding piece for elastically holding, and a cross-sectional shape orthogonal to the axis of the fuse has a C-shape.
A pair of leg pieces which extends obliquely outwardly of and downwardly from the lower portion of the holder body so as to form, projecting from the lower end of each of said pair of legs is extended in a direction along the axis of the fuse possess the door, the leg and the protrusion is an elastically deformable Print
A fuse holder, which comes into contact with a substrate with elasticity. 2. The fuse holder according to claim 1, wherein support grooves for lead wires connected to both axial ends of the fuse are formed at both ends in the axial direction of the holding piece.