JPH036816Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement in a radiator reserve tank for storing pre-cooling water for engine cooling water.

(Prior art) In automobiles, when the engine cooling water in the radiator is insufficient, the required amount of cooling water is automatically replenished into the radiator, as shown in, for example, Japanese Utility Model Application Publication No. 1722/1983. A reserve tank for pre-cooling water storage is provided, but this type of reserve tank is usually made of a pipe member such as a hose (usually made of plastic etc. with a certain degree of flexibility and rigidity). It is customary to connect to the radiator via a When there is a shortage of cooling water in the radiator, spare engine cooling water stored in the reserve tank is replenished into the radiator through the pipe member, and conversely, due to thermal expansion as the cooling water temperature rises, When cooling water overflows from the radiator, the overflow flows into the reserve tank through the pipe member and is stored therein. In addition, the application related to the overflow hose of the reserve tank was filed in 1983, which is related to the earlier application in this case.
-114316 (Utility Model Publication No. 62-21433) exists.

By the way, when the above-mentioned reserve tank is installed in the engine room, the injection part of the radiator should be installed at a location where the length of the pipe member is as short as possible and in consideration of the flow of cooling water from the radiator. It is customary to arrange the reserve tank at a lower position than the reserve tank. Therefore, conventionally, the reserve tank is often placed around the upper part of the wheel apron in the engine room. It is desirable to fix the cap and the pipe member in a proper setting position, extending along the circumference of the cap to the upper part of the reserve tank, and from there passing vertically downward through the reserve tank cap and into the tank.

However, in the past, when removing and reinstalling the reserve tank cap, unless this type of operation was performed with great care, the cap or pipe member would not be set in the correct condition.
Therefore, a situation has arisen in which the pipe member contacts and interferes with various parts and auxiliary equipment in the engine room. Furthermore, even if the cap and pipe members are initially set in the correct position, vibrations from the engine, wheels, etc. may cause the cap to rotate from its normal position, causing the pipe member to become damaged. As a result, the same problem as above occurs, and in this case, the connecting part between the pipe member and the radiator or cap may be damaged, or the connecting end of the pipe member with the radiator may fall off. This will cause many problems.

Incidentally, in order to deal with the above-mentioned problems, for example, the middle part of the pipe member can be fixed with metal fittings, etc., but if this is done, the number of parts and labor will increase, leading to an increase in cost. It turns out.

(Purpose of the invention) The present invention deals with the above-mentioned problems regarding conventional radiator reserve tanks, and utilizes the shape of the wheel apron in the engine room where this type of reserve tank is located. It is an object of the present invention to realize a reserve tank that has a relatively simple structure and allows easy positioning of the reserve tank cap and pipe members without increasing costs by improving the structure.

(Structure of the invention) In order to achieve the above purpose, the invention is structured as follows.

That is, in a radiator reserve tank that is connected to the radiator via a pipe member and stores pre-cooling water for engine cooling water, a concave portion is formed in the bottom of the tank, and a cap attached to the inlet of the tank is provided with a concave portion. Penetrate the pipe member. The portion of the pipe member inside the reserve tank is bent at the middle portion so that the upper portion and the lower portion thereof are offset, and the lower end of the lower portion of the pipe member is configured to reach near the bottom of the recess. do. Here, the recessed portion is formed in such a shape that the bottom surface of the reserve tank follows, for example, the top surface of the wheel apron.

According to such a configuration, when the cap of the reserve tank rotates due to, for example, vehicle body vibration, and the pipe member or the connecting portion between the two is about to come out of the normal position, that is, the reserve tank of the pipe member is If the tip inside the tank tries to come off near the bottom of the recess on the bottom of the tank, the tip of the pipe will interfere with the bottom of the tank other than the bottom of the recess, causing the pipe or cap to come off. Rotation is restricted, and as a result, the cap and the pipe member, or the connecting member between the two, are inevitably and automatically set in the correct position.

(Effects of the invention) As mentioned above, in the present invention, a recess is formed in the bottom of the radiator reserve tank, and the part of the pipe member that penetrates the tank cap is bent and offset within the tank. With this structure, the reserve tank cap, the pipe member, or the connecting portion between the two are automatically set in their normal positions. As a result, the pipe member may come out of its normal position and interfere with various parts in the engine compartment, or the pipe member may swing due to vibrations of the vehicle body and cause the pipe member to connect with the radiator or reserve tank cap. This makes it possible to reliably prevent situations such as parts being damaged or falling off without increasing costs.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a schematic plan view of the engine room of an automobile viewed from above. As shown in the figure, an engine 2 is arranged in the center of the engine room 1, and a radiator 3 is located in front of it (indicated by arrow F). In addition, a wheel apron 4 for storing tires protruding inward from the engine room and a suspension tower 5 for storing a part of the suspension system are arranged on the sides of the engine room 1, respectively. A radiator reserve tank 6 is disposed above the wheel apron 4.

The reserve tank 6 is connected to the radiator 3 via a pipe member 7, and reserve engine cooling water is stored in the tank 6 (see FIG. 2). When the engine cooling water in the radiator 3 is insufficient, the negative pressure in the radiator 3 flows through the pipe member 7 to the reserve tank 6.
The preliminary cooling water inside the radiator 3 is sucked up and
On the other hand, if, for example, after cooling the engine 2, the engine cooling water in the radiator 3 overflows from the cooling water injection port 3a at the top of the radiator due to thermal expansion, Cooling water flows from the injection portion 3a into the reserve tank 6 via the pipe member 7 and is stored in the tank 6. In this embodiment, the pipe member 7 includes a pipe 8 whose upper part is bent at a substantially right angle and whose lower part is inserted into the reserve tank 6, and a cooling water injection part 3a between the pipe 8 and the radiator 3. It consists of a hose 9 that connects the
It follows the inner circumference.

Further, as shown in FIG. 2, the reserve tank 6 is constructed of, for example, a translucent plastic container so that the amount of cooling water a stored therein can be recognized from the outside. A cooling water inlet 6a is formed in the upper part of the cooling water inlet 6a. A cap 10 is detachably attached to the injection port 6a, and the pipe 8 is press-fitted through the center of the cap 10.
As shown in FIG. 3, a ring-shaped seal member 11 made of rubber or the like is attached to the back side of the cap 10 to seal between it and the reserve tank 6. As shown in the figure, a protruding piece 10a is formed on a part of the outer periphery of the cap 10, and when the protruding piece 10a is grasped and operated, for example, to be turned up, the lower part 10b of the cap 10 and the above By disengaging the upper portion 6a' of the inlet 6a, the cap 10 can be removed from the inlet 6a of the reserve tank 6. In that case, in this embodiment, the projecting piece 10 of the cap 10 is
The lower part 10b of the cap 10 corresponds to a.
By forming a notch 10c in a portion of the cap 10, the operating force required to remove or attach the cap 10 can be reduced.

However, as a feature of the present invention, the bottom surface 6b of the reserve tank 6 is formed in an inclined shape along the top surface shape of the wheel apron 4, so that a recess 6c is formed in the bottom surface 6b. There is. The pipe 8 is bent at its intermediate portion so that the upper portion 8a and lower portion 8b of the pipe 8 in the tank 6 are offset by a predetermined amount. The tip, that is, the lower end 8b' of the lower portion 8b reaches near the bottom 6c' of the recess 6c.

According to the above configuration, the pipe 8 inserted into the reserve tank 6 is bent within the tank 6 so that the upper part 8a and the lower part 8b are offset, and in the normal state, the lower part 8b is The lower end 8b' is the bottom 6 of the recess 6c formed in the reserve tank 6.
c' or close to it, the pipe 8
Even if the pipe 8 attempts to shift from such a normal state to an irregular state as shown by the chain line in FIG.
It will come into contact with. Therefore, when the cap 10 of the reserve tank 6 rotates due to, for example, engine vibration or vehicle body vibration, the connecting portion between the cap 10 and the pipe 8, that is, the pipe member 7, is in the normal position (the position shown in FIG. 1). Even if I try to get away from it,
The lower part 8b of the pipe 8 and the reserve tank 6
This movement (rotation of the cap 10 and pipe 8) is regulated by the interference with the bottom surface 6b of the pipe member 7, and as a result, the pipe member 7 is always held at the normal position shown in FIG. This prevents interference between the pipe member 7 and various parts in the engine room 1 due to the pipe member 7 coming out of its normal position, and interference between the pipe member 7 and the radiator 3.
Also, damage or falling off of the connecting portion with the reserve tank 6 can be prevented.

Furthermore, according to the present invention, as described above, the lower end 8b' of the pipe 8 is always automatically set to be located near the bottom 6c' of the recess 6c, which is the lowest position in the reserve tank 6. The tank 6
Even when the water level of the cooling water a within the tank becomes relatively low, there is an advantage that dry suction can be reliably prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic plan view showing a state in which a radiator reserve tank according to the embodiment is arranged in the engine room, and FIG. Enlarged longitudinal sectional front view cut away to show the reserve tank and its surroundings, No. 3
The figure is an enlarged vertical cross-sectional view showing a part of the cap at the upper part of the reserve tank, and Figure 4 is the same as Figure 3.
It is a bottom view cut along a line. 3...Radiator, 6...Reserve tank, 6
b...bottom, 6c...recess, 6c'...bottom, 7...
...Pipe members (8...pipe, 9...hose),
8a... Upper part of the pipe member, 8b... Lower part of the pipe member, 10... Cap, a... Cooling water.

Claims (1)

[Scope of utility model registration request] A radiator reserve tank connected to the radiator via a pipe member to store pre-cooling water for the engine coolant, the tank having a recess formed in the bottom surface, and the pipe member penetrating the cap of the reserve tank. The portion of the pipe member inside the reserve tank is bent so that its upper portion and lower portion are offset, and the lower end of the lower portion of the pipe member reaches near the bottom of the recess. A reserve tank for a radiator.