JPS5847218Y2 - Cooling water discharge device for internal combustion engine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cooling water drainage device for an internal combustion engine.

More specifically, the present invention relates to a cooling water drainage device for a radiator used to cool an internal combustion engine such as an automobile engine.

2. Description of the Related Art Internal combustion engines such as automobile engines are usually provided with a radiator as a cooling device to keep the engine at an appropriate temperature so that the internal combustion engine does not overheat during operation.

A radiator is mainly composed of a core section, an upper tank, and a lower tank, and a drain cock is attached to the lower tank for discharging cooling water.

However, in the conventional drain cock as described above, it is necessary to separately form a drain seat on the lower tank in order to attach the drain cock, and the drain cock cannot be attached to the drain seat formed in this way. I had to.

Furthermore, in order to secure the drain sheet to the lower tank, a large number of steps such as welding and thread cutting are required, which inevitably increases costs.

Furthermore, in the former method, in which the drain cock is attached to the drain seat, the sealing material, such as a rubber gasket, is in constant contact with the fuel water in the tank due to its structure, resulting in deterioration of the sealing material over long periods of use.

The present invention was developed in order to eliminate the various drawbacks of the conventional cooling water drainage device as described above, and has a stopper projecting horizontally at both ends, and a positioning emboss or recessed part on the top surface of the stopper. A drain cock body is formed by connecting a plate-shaped cock body convex part at the bottom, a nodule member at the top, and a shaft formed by inserting a sealing material around the two, and the drain cock body is connected to the cock body convex part. A cooling water drainage device for an internal combustion engine, characterized in that the cooling water drainage device for an internal combustion engine is inserted into a plate of a tank portion, which has a cutout portion having substantially the same shape as the tank portion, and a positioning hole or an embossment provided on the outside of the center portion of the cutout portion. It is.

Next, embodiments of the present invention will be described with reference to the drawings.

That is, as shown in FIGS. 1 to 3, stoppers 1 and 2 that protrude horizontally from both ends are integrally made of synthetic resin or metal on a disc 3, and the top surfaces of these stoppers 1 and 2 are provided with positioning holes. Embosses 4.5 are provided to protrude, respectively, to form convex portions of the cock body.

A shaft 6 is fixed to the center of the upper surface of the disc 3, and a nodule member 9 formed by integrally molding a nodule T on the upper surface and a plate 9 at the lower part is fixed to the upper end of the shaft 6. A sealing material 10 such as a rubber packing or the like is placed around the shaft 6 at a distance sufficient to allow a plate to be inserted fluid-tightly between the convex portion of the cock body and the nozzle member 9 as described later. is inserted to form a drain cock.

On the other hand, as shown in FIG. 4, an internal combustion engine cooling device such as a radiator (not shown) is used.

) is provided with a notch 1 having the same shape as the horizontal cross section of the convex portion of the cock body of the drain cock.
2, and two positioning holes 14 and 15 are bored around the circular part 13 of the notch 12, facing the center thereof.

As shown in FIG. 5, the drain cock having the above structure is fitted so that the convex part of the cock body fits into the notch 12 of the plate, and then the cock is pressed against the plate 11 side, and the sheet material 10 For example, when rotated by 90 degrees in a compressed state, the emboss 4 on the convex part of the cock body
, 5 are fitted into the positioning holes 14 and 15 of the plate 11, respectively, and locked.

Therefore, the liquid-tight state can be changed. On the other hand, when draining the cooling water in the tank, the locking state of the embossments 4 and 5 is released by performing the operation opposite to the tightening described above, and the drain cock can be removed from the notch 12 of the plate 11.

As described above, since attachment and detachment are performed by rotation of the bundle and rotation of the cock around the shaft 6, the main parts of the plate 3 of the convex part of the cock body and the notch 11 of the plate 11 are not necessarily circular. There is no need for both to have substantially the same shape, and the convex portion of the cock body is in the notch 1.
Any shape that can be inserted into 1 may be used.

Further, the positions of the positioning holes 14 and 15 are also arranged around the notch 12 and the emboss 4, which moves with the rotation of the cock.
As long as it corresponds to position 5, it does not necessarily have to be a 90° rotated position, but may be a 45° rotated position or any other position.

However, if the rotation angle is too small, the plate 11 will not be sufficiently suppressed by the stoppers 1 and 2, making it difficult to obtain sufficient liquid tightness.

Since the cooling water discharge device for an internal combustion engine according to the present invention has the above-described configuration, it is not necessary to install a train sheet for attaching a drain cock as in conventional drainage devices.

This eliminates the need for processes such as welding and thread cutting for installing the drain sheet, resulting in cost reduction.

Furthermore, since the sheet material does not come into direct contact with the hot water in the tank, the problem of seal deterioration over time is eliminated.

Furthermore, since the embossing and positioning holes are provided, the drain cock can be completely locked.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the cock body excluding the sealing material used in the cooling water drainage system according to the present invention, Figure 2 is a front view of the drain cock, Figure 3 is a side view of the drain cock, and Figure 4 is a side view of the drain cock.
This figure is a plan view of the stopcock insertion section of the tank plate, and FIG. 5 is a sectional view showing the locked state by the drain cock. 1.2...stopper, 3...-plate, 4
, 5... Emboss for positioning, 6...
・Shaft, T...Bundle, 8...
Plate body, 9...Bundle member, 10...
Seal member, 11 Knee bend tank plate, 12...
...Notch, 14, 15...Positioning hole.

Claims (1)

[Scope of utility model registration request] A plate-shaped cock body convex portion having stoppers projecting horizontally at both ends and a positioning embossing or recessed portion on the upper surface of the stopper is at the bottom, and a nozzle member is at the top.
and a drain cock body formed by connecting the two with a shaft with a sealing material inserted around the periphery, a notch having approximately the same shape as the convex part of the cock body, and an outside of the central part of the notch. 1. A cooling water discharge device for an internal combustion engine, which is inserted into a plate of a tank portion provided with a positioning hole or embossing.