JPH0122900Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to the structure of a reserve tank for an automobile radiator.

[Prior Art] Examples of conventional reserve tank structures for automobile radiators include those shown in FIGS. 1 and 2. This is disclosed in Automotive Engineering Complete Book "Gasoline Engine", P354, Sankaido (published on July 20, 1981).

In the figure, R is a radiator and T is a reserve tank. The radiator R consists of an upper tank 1, a lower tank 2, and a core 3. The hot water tank 1 has an inlet 4 for introducing cooling water from a water jacket and a replenishment port 5 for injecting water.
5a is a cap of the supply port 5. The supply port 5 is provided with a connector 6 for removing excess water and steam, and an overflow hose 7 is connected to this. This hose 7 is connected to a supply port 8 provided at the bottom of the reserve tank T. The reserve tank T has the feed port 8 at the bottom and the discharge port 9 at the top.
It is equipped with the following. Reference numeral 10 designates a cap for the discharge port 9, and this cap 10 is provided with a connector 11 for removing overflowing cooling water accumulated in the reserve tank T. 12 is an overflow hose connected to the connector 11, and is fixed to the side wall of the reserve tank T by a clip 13.

FIG. 3 shows another conventional example. In this case, a short overflow hose 14 is connected to the connector 11 and left free without being fixed with a clip or the like. Although not shown, there is also an example in which the connector 6 of the reserve tank T is provided directly to the supply port 5.

With this structure, excess water and steam overflowing from the supply port 5 of the hot tank 1 is sent into the reserve tank T through the connector 6 and the overflow hose 7. When the fed water or steam accumulates in the tank T and overflows from the discharge port 9, it is discharged to the outside through the connector 11 and the overflow hose 12 or 14 as an overflow liquid.

However, in this reserve tank structure, the overflow hose 12 is attached to the clip 13.
However, the short overflow hose 14 is simply connected to the connector 11 without being secured with a clip or the like, resulting in the following problems.

That is, (1) In the former case, the overflow hose 12
Since it is long, a clip 13 is required, and the number of assembly steps increases accordingly, resulting in high cost.
Moreover, since the overflow hose 12 is only stopped by the clip 13, depending on the installation location of the reserve tank T and the drainage route, it may interfere with surrounding parts, making it impossible to securely position and hold the reserve tank T. Therefore, when the vehicle body vibrates, the overflow hose 12 moves or swings, causing the overflow liquid to scatter, potentially staining and corroding surrounding parts. Of course, it is conceivable to use a large number of clips 13 to ensure reliable positioning, but this poses the problem of increasing costs.

(2) In the latter case, overflow hose 14
Because of the short length, the vibrations of the car body cause severe vibrations. Therefore, there was a problem in that the overflow liquid splashed and splashed onto surrounding parts, staining and corroding them.

[Purpose of the invention] This invention was made to solve these conventional problems.By integrally forming a drain pipe for overflow liquid in the reserve tank, it prevents contamination and corrosion of surrounding parts. without letting
Therefore, the present invention provides a reserve tank structure for an automobile radiator that can be installed at a desired location and is inexpensive.

[Structure of the invention] The reserve tank structure of this invention is characterized in that a drain pipe for connecting an overflow pipe of the reserve tank is integrally formed with the reserve tank.

[Example] Examples of the present invention will be described below with reference to FIGS. 4 to 6. Components that are the same as or corresponding to those in FIGS. 1 to 3 are given the same reference numerals, and their explanations will be omitted.

FIG. 4 shows a first embodiment.

In the figure, _D1 is a drain pipe provided vertically along the side wall of the reserve tank T from the upper end surface to the lower end surface, and is integrally formed when the reserve tank T is molded. The hole size of drain pipe _D1 is the same as that of overflow pipe _P1 , which will be described later.
It is slightly larger than the thickness of . The hole has a semicircular cross section to facilitate insertion of the pipe _P1 . P ₁ is the overflow pipe, outlet 9
It consists of a connector 11 provided on a cap 10 and an overflow hose 15 connected to the connector 11, and this hose 15 is inserted into a drain pipe _D1 and connected thereto.

With this structure, overflow liquid from the reserve tank T is guided to the drain pipe _D1 through the overflow pipe _P1 . First, even if the drain pipe _D1 interferes with surrounding parts, it will not be misaligned, and will not move or shake even if the vehicle body vibrates. Therefore, there is no fear that the overflow liquid will scatter and stain or corrode surrounding parts, and the reserve tank T can be installed at a desired position.

Second, the drain pipe D ₁ can be molded at the same time as the reserve tank T, and the overflow pipe P ₁ can be assembled by simply inserting it into the drain pipe D ₁ , which reduces not only the number of parts but also the number of assembly steps. Cost can be reduced accordingly.

FIG. 5 shows a second embodiment.

In the figure, _D2 is a drain pipe provided vertically along the side wall of the reserve tank T in the same manner as in the first embodiment, and is integrally formed when the reserve tank T is formed. The hole of drain pipe _D2 is
It is sized and shaped so that an overflow pipe _P2 , which will be described later, can be inserted and fitted securely. That is, the size is such that the pipe P ₂ just fits therein, and the shape is the same circular shape as the pipe P ₂ . The cap 10 has a concave groove 10a that fits and covers the protrusion 9a of the discharge port 9. Therefore, it can be fitted by placing it on the discharge port 9 and pressing it from above. P ₂ is the overflow pipe, cap 1
0 is integrally formed. This pipe P ₂ is the first
The connector 11 in the embodiment is made into a long and bent shape, and has a length that allows the cap 10 to be fitted into the drain pipe _D2 when the cap 10 is fitted into the discharge port 9.

With this structure, the overflow liquid from the reserve tank T is discharged from the drain pipe _D2 , and the two effects described in the first embodiment can be achieved.

In addition, in this embodiment, since the overflow pipe _P2 is integrally formed with the cap 10, the cap 10 is fitted into the discharge port 9, and the overflow pipe _P2 is fitted into the drain pipe _D2 at the same time. It is attached. Therefore, not only does the assembly work become easier, but once assembled, the overflow pipe P ₂ and drain pipe D ₂
The fitting part with the pipe becomes firm, preventing vibration of the pipe _P2 ,
There is no need to worry about overflow liquid leaking due to misalignment.

FIG. 6 shows a third embodiment.

In the figure, _D3 is a drain pipe provided from the side wall to the bottom wall of the reserve tank T, and is integrally formed with the reserve tank T with the same shape and size as in the second embodiment. P ₃ is the overflow pipe,
It is integrally formed with the cap 10. The cap 10 and the overflow pipe _P3 can be attached in the same manner as in the second embodiment.

With this configuration, the overflow liquid from the reserve tank T can be discharged from the drain pipe _D3 , and the two effects of the first and second embodiments can be achieved. can.

In addition, in this embodiment, since the drain pipe _D3 is continuously provided from the side wall to the bottom wall of the reserve tank T, there are the following advantages.

That is, for example, even if the reserve tank T is installed in the step part of the car body 13 as shown in FIG. 6, the overflow liquid will not reach the car body 13, especially the step part, so that part will not be contaminated. Or, there is no risk of damage due to corrosion. Therefore, other parts can be disposed close to the stepped portion, and the vehicle body space can be used effectively.

[Effects of the invention] As explained above, according to this invention, since the drain pipe for discharging overflow liquid is integrally formed in the reserve tank, the following effects can be obtained.

(1) There is no movement or shaking of the drain pipe, and there is no risk of overflow liquid scattering and staining or corroding surrounding parts, as was the case in the past. Therefore, the reserve tank can be installed at a desired position.

(2) It is not necessary to fasten the overflow pipe with clips as in the past, which not only reduces the number of parts but also reduces the number of assembly steps.
Therefore, it is possible to reduce costs.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a conventional automobile radiator and its reserve tank, Fig. 2 is a perspective view of the reserve tank shown in Fig. 1, Fig. 3 is a side view showing another conventional example, and Fig. 4 is this. Showing the first embodiment of the invention,
The same figure A is a perspective view, the same figure B is a sectional view of the same figure A,
The figure shows the second embodiment, and FIG. 6 is a cross-sectional view showing the third embodiment. In the figure, T is a reserve tank, P ₁ , P ₂ ,
P ₃ is an overflow pipe, and D ₁ , D ₂ , and D ₃ are drain pipes. In addition, in the drawings, the same or corresponding parts are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] A reserve tank structure for an automobile radiator, characterized in that a drain pipe for connecting an overflow pipe of the reserve tank is integrally formed with the reserve tank.