JPS596600Y2 - Fusible tube retainer - Google Patents

Description

[Detailed description of the invention] The present invention relates to a retainer for a fusible cylinder mainly used in a switchboard.

It consists of a combination of an insulating base to which clips that hold the caps at both ends of the fusible cylinder are fixed, and a lid that holds the fusible cylinder. By overlapping the lid with the base, the fusible cylinder is supported by the clips. In a retainer that has a structure in which the lid and the base are fixed, and the fusible tube is removed from the clip by separating them from each other, the fusible tube can be removed and replaced from the lid (cover), and the fusible tube can be attached to the base. It must be held so that it does not fall off the lid when it is attached or removed.

Conventionally, the holding part was formed into a lid, the central insulating cylinder part of the fusible cylinder was fitted into the hole, and the central insulating cylinder part of the fusible cylinder was held in place. Kaisho 49-13
(see Japanese Utility Model Publication No. 1543), or fixed using a protrusion (Utility Model Application Publication No. 49-110249, Japanese Utility Model Application No. 53973)
60) was the usual holding means.

However, with these, the fusible tube is fixed to the lid, so if there is a dimensional difference between the base and the lid, or even the fusible tube, the clip can completely support the caps at both ends of the fusible tube. In some cases, it may not be possible to make a proper electrical connection, and in many cases, it is not easy to remove and replace the fusible tube lid.
Furthermore, the structure in which the stand and the lid are combined has the problem that it is difficult to radiate the heat generated when electricity is applied from an electrically safe location.

The present invention solves these problems, and examples thereof will be described below with reference to the drawings.

In the figure, 1 is a stand and 2 is a lid, both of which are made of insulating materials such as hard synthetic resin, Bakelite, and ceramics.

The stand 1 has shielding walls 3, 3 at the front and rear, and an opening 4, 4 is formed in the center of these walls, and clips 6, 6 and a terminal board 7 are placed on the left and right with a mounting hole 5 in the center in between. , 7 are stacked and fixed by screws 8, 8, and a screw 9 for tightening the conductive wire.
, 9 are screwed onto the terminal plates 7, 7 and inserted into the holes 10, 10 of the base 1.

The lid 2 is made in a size that can be placed on the shielding walls 3, 3 and superimposed on the stand 1, and has skirt walls 11, 11 formed at the front and rear of the center thereof, which fit into the openings 5, 5. A holding part 12 with a U-shaped side surface into which the central insulating cylinder part Fa of the fusible cylinder F is loosely fitted is formed between these parts, the upper surface of which is opened by a window hole 13, and one side of the window hole 13 is formed. A handle 14 is protruded from the top surface of the handle.

On the inner surface of the lid 2, that is, the surface where the holding part 12 is formed, there are protrusions 15 and 16 that are in contact with the left and right end surfaces of the conductive caps Fb, Fb, at both ends of the fusible tube F, which are slightly longer than the length of the fusible tube F. Following these protrusions 15.16, arcuate side seats 17.18 and inclined surfaces 19.20, which contact the caps Fb and Fb, are formed in order toward the central window hole 13. Further, on one side of the holding portion 12, an elastic pawl 21 is formed to protrude and engage in contact with the central insulating cylinder portion Fa.

In FIGS. 3 and 5, the first protrusion 15 on the left side is lower than the second protrusion 16 on the right side, and the fusible cylinder F is loosely inserted from the left side into the hole 22 of the holding part 12. By raising the peripheral edge of the tip along the second inclined surface 20 so as to be parallel to the lid 2 and sliding it forward until it hits the second protrusion 16, either the left or right catch seats 17, 18 can be moved. or both, and the elastic claw 21 on the opposite side.

The lid 2 holding the fusible tube F in this way is stacked on the stand 1,
While fitting the hem wall 11 into the opening 4, the cap F b
, Fb are held and fixed by the clips 6, 6.

The skirt walls 11, 11 have a groove-shaped opening 23.23 in the center, and the left and right sides are made with a larger slope than the left and right sides of the openings 4, 4, so the opening 23.23 can be reduced while the opening 23.23 is being reduced. The lid 2 is press-fitted into the parts 4, 4, and the lid 2 is fixed to the base 1 in the state shown in Fig. 2.3.4.

When removing the lid 2 from the stand 1, pull the handle 14 and remove the fusible cylinder F.
is pulled out from the clips 6, 6, and the held fusible tube F is removed by pulling or pushing it toward the left in FIG.

As described above, the present invention has a stand 1 which has clips 6, 6 and is provided with shielding walls 3, 3 at the front and rear, which have openings 4, 4 formed in the center.
and a lid 2 that movably holds the fusible cylinder without fixing it by at least two parts: the left and right protrusions 15, 16 on the inner surface, the seats 17, 18, and the holding part 12 and elastic claws 21 between them. Therefore, in a combination structure in which the base 1 and the lid 2 are completely separable as in the illustrated embodiment, both ends of the fusible cylinder are integral with the lid 2 or separate from the lid 2, regardless of the orientation of the lid 2. The elastic claws 21, which are integral with or separate from the two catch seats 17.18 and the holding part 12 located on the opposite side thereof, are supported by the holding part 12 and are movable. Not only does it prevent the melting cylinder from falling off,
Since the fusible cylinder is movably held by the elastic claw 21 and other parts, even if there is a dimensional difference between the base and the lid, the fusible cylinder, and the clip, the dimensional difference is absorbed by the fusible cylinder moving to a certain extent. The caps on both ends can be completely held in the clips to make a complete electrical connection.

In addition, the clip and cap are surrounded by shielding walls 3, 3 on the front and rear of the stand 1, and the lid 2, so the conductive parts are protected from being exposed and are highly safe. A window hole 13 is formed on the top surface of the holding part 12 at the location where the
Since there are provided openings 23 and 23 at the front and rear, heat dissipation during energization can be effectively carried out from an electrically safe location.

Furthermore, the base 1 and the lid 2 have skirt walls 11, 11 in the openings 4, 4.
By fitting them together, they can be assembled by overlapping each other accurately and can be attached and detached accurately.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a right side view, Fig. 3 is a vertical sectional view, Fig. 4 is a sectional view taken along line X-X in Fig. 1, and Fig. 5 is a lid. FIG. 1...stand, 2...lid, 3...
Shielding wall, 4... Opening, 6... Clip, 11... Bottom wall, 12... Holding part, 1
3...Window hole, 15.16...Protrusion, 1
7.18...Catch, 20...Slanted surface,
21...Elastic claw, 23...Opening.

Claims (1)

[Claims for Utility Model Registration] Front and rear shielding walls 3, 3 having openings 4, 4 in the center, and clips 6, 6 that sandwich the caps F b , F b at both ends of the fusible tube F. Base 1 having openings 23, 23 and fitting into the openings 4, 4 are provided at the front and rear of the central portion, and these skirt walls 11,
A holding part 12 into which the central insulating cylinder part Fa of the fusible cylinder F is fitted and a window hole 13 open to the top surface are provided in the part between 11 and a central insulating cylinder part Fa on one side of this holding part 12. F
Elastic pawls 21 that contact and engage with the holding portion 12 are formed protrudingly, and projecting edges 15 and 16 are formed on both left and right sides of the holding portion 12 at an interval slightly larger than the length of the fusible tube F, and following them. A cover 2 is provided with a catch 17, 18 shaped towards the center and further provided with an inclined surface 20 shaped towards the second catch 18, and is made of a fusible material. The cylinder F has a first protrusion 15 and a catch 1
7 is loosely inserted into the holding part 12, and the holding part 12, the elastic claw 21, the left and right protrusions 15, 16, and the two seats 17, 1
8. A retainer of a fusible cylinder configured to be movably held by at least two parts of 8.