JPH06146883A - Pressurizing reserve tank - Google Patents

Abstract

PURPOSE:To simplify the structure of metal molds by dispensing with a slide mold which perpendicularly works on a communicating hole in a partition wall and forming the communicating hole only by an upper metal mold and a lower metal mold structure, when an upper container and a lower container, which are made of resin, are made up by an upper and a lower metal molds for pressure proof structure in a pressurizing type reserve tank made of resin material. CONSTITUTION:Upper notches 5A, 5B, 5C, which reach lower end connecting parts 3A, are formed in upper partition plates 3 of an upper container 1, while lower notches 8A, 8B, 8C, which reach upper end connecting parts 6A, are formed in lower partition plates 6 of a lower container 2 in the different positions from the upper notches 5A, 5B, 5C, and the upper container 1 and the lower container 2 are integrated together so that upper communicating holes are formed by the upper notches 5A, 5B, 5C and the upper end connecting parts 6A of the lower partition plates 6. Moreover, lower communicating holes are formed by the lower notches 8A, 8B, 8C of the lower partition plates 6 and the upper end connecting parts 3A of the upper partition plates 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure type reserve tank made of a resin material, and more particularly to an improvement in a pressure resistant structure thereof.

[0002]

2. Description of the Related Art Generally, in order to adjust the amount and internal pressure of cooling water in a radiator, an open type reserve tank that does not apply pressure is provided in the radiator, or the cooling water is provided in the middle of the cooling water circuit of the radiator. A pressurized reserve tank is provided which is under pressure in the circuit.

For example, Japanese Utility Model Laid-Open No. 61-94232 discloses a pressure type reserve tank shown in FIG. In the figure, a bypass circuit 104 is provided in parallel with the radiator 102 in the middle of a cooling water circuit 103 provided between the engine 101 and the radiator 102, and a pressurized reserve tank 105 is installed in the middle of the bypass circuit 104.

The structure of the pressurizing type reserve tank 105 is shown in FIGS. 7 to 9, for example. In the figure,
Reference numeral 106 denotes an upper container and 107 denotes a lower container. The upper container 106 is made of resin as a lower end opening, and is partitioned into a plurality of upper tank tanks 109 by a plurality of upper partition plates 108 arranged in a grid pattern. .

The lower container 107 is made of resin and has an upper end opening. The lower container 107 is divided into a plurality of lower tank tanks 111 arranged in a grid pattern by providing lower partition plates 110 at the same positions as the upper partition plate 108. There is.

The upper partition plate 108 of the upper container 106 has an upper communication hole 108A formed at the upper end thereof. The lower partition plate 110 of the lower container 107 has a lower communication hole 110A formed at the lower end thereof.

Then, the lower end joint surface 10 of the upper container 106
6A and the lower end joint surface 107A of the lower container 107 are aligned together and integrally joined by vibration welding, whereby the upper tank tank 109 and the lower tank tank 1 at a position corresponding to the upper tank tank 109 are formed.
11 and 11 are partitioned into a plurality of tank chambers 113 via partition walls 112 that are arranged in a grid pattern and that are composed of an upper partition plate 108 and a lower partition plate 110.

However, the cooling water in the pressurizing reserve tank 105 is passed through the lower communication hole 110A to each tank chamber 1
Inflow and outflow between 13 and the pressure type reserve tank 105
The air inside the tank chambers 1 passes through the upper communication holes 108A.
Inflow and outflow between 13.

Since the inside of the pressurizing reserve tank 105 is reinforced by the partition wall 112, the structure becomes strong and can withstand a strong pressure.
Is not allowed to open laterally.

[0010]

However, in the conventional pressure type reserve tank 105, the upper container 106 and the lower container 107 are made of a resin material separately by the upper and lower molds. Upper communication hole 108A of upper container 106, lower communication hole 110 of lower container 107
In order to form A, a slide mold that operates at right angles to the surfaces of the communication holes 108A and 110A is installed in the upper and lower molds, and the communication holes 108A and 1
There is a problem that 10A cannot be molded and the mold structure is complicated.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to form a resin material as a material at right angles to a communication hole of a partition wall when manufacturing an upper container and a lower container with upper and lower molds. It is an object of the present invention to provide a pressure type reserve tank that does not require an operating slide mold and can form a communication hole by only a structure of upper and lower molds to simplify the structure of the mold.

[0012]

SUMMARY OF THE INVENTION According to the present invention, an upper container having a lower end opening divided into a plurality of upper tanks by a plurality of upper partition plates and a lower partition plate at the same position as the upper partition plate are provided. It is composed of a lower container with an upper opening that is divided into a lower tank tank, and the lower end joint part of the upper container and the upper end joint part of the lower container are joined together to integrally form a partition wall composed of an upper partition plate and a lower partition plate. In the pressure reserve tank made of resin that forms and partitions a plurality of tank chambers consisting of an upper tank tank and a lower tank tank at a position corresponding to it, at the upper partition plate of the upper container, at the lower end joint An upper cutout is formed on the lower partition plate of the lower container, and a lower cutout reaching the upper end joint is formed at a position deviated from the upper cutout, and the upper container and the lower container are integrated to form the upper cutout of the upper partition plate. Bottom finish In the upper junction of the plate to form the upper communication hole, characterized in that the formation of the lower communication hole between the upper junction of the lower notch and an upper partition plate of the lower partition plate.

[0013]

In the present invention, if the upper container and the lower container are formed separately and their joint surfaces are joined, the upper communication hole and the lower communication hole are formed without impairing the function of communication, and The air in the tank chamber of the pressure reserve tank freely communicates with each tank chamber through each upper communication hole. Further, the cooling water in the tank chamber in the pressurizing reserve tank freely communicates with each tank chamber through each lower communication hole.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a pressure type reserve tank according to an embodiment of the present invention.

The pressurizing reserve tank in this embodiment is mounted in the middle of the bypass circuit provided in parallel in the middle of the cooling water circuit of the engine and the radiator as in the conventional example. In FIG. 1, the pressurizing type reserve tank in this embodiment is composed of an upper container 1 and a lower container 2. First, the structures of the upper container 1 and the lower container 2 will be separately described.
The upper container 1 is divided into four upper tank tanks 4, 4, 4, 4 by the three upper partition plates 3, 3, 3 and is formed at the lower end opening using a resin material. A flange portion 1A is formed on the periphery of the opening.

A groove 3B shown in FIG. 5 is formed in the lower end joint 3A of each upper partition plate 3 of the upper container 1, and each upper partition plate 3 has a lower end joint 3A of the upper partition plate 3. Upper notches 5A, 5B, 5C are formed respectively.
The upper notches 5A and 5C are formed on the wall 1 on the other side of the upper container 1.
B is located close to B, and the upper notch 5B is located in the upper container 1
It is located at a position close to the front wall portion 1C.

On the other hand, the lower container 2 is divided into four upper tank tanks 7, 7, 7, 7 by three lower partition plates 6, 6, 6 and has an upper end opening made of a resin material.
A flange portion 2A is formed on the peripheral edge of the opening.

Each lower partition plate 6 of the lower container 2 is formed with lower cutouts 8A, 8B, 8C reaching the upper end joint 6A thereof. The lower cutouts 8A and 8C are located near the front wall 2C of the lower container 2, and the lower cutout 8B is located near the other wall 2B of the upper container 1.
When the upper container 1 and the lower container 2 are superposed, the lower cutouts 8A, 8B, 8C are formed at positions displaced from the upper cutouts 5A, 5B, 5C.

The upper container 1 and the lower container 2 are each made of a resin material and are molded by only upper and lower molds. Further, the upper container 1 and the lower container 2 are put together in the middle, and the flange portion 1A and the lower end joint portion 3A thereof and the flange portion 2A and the upper end joint portion 6A of the lower container 2 are fitted together by vibration welding. By joining, a partition wall 9 composed of the upper partition plate 3 and the lower partition plate 6 is formed, and a tank chamber 10 composed of the upper tank tank 4 and the lower tank tank 7 at a position corresponding thereto is formed through this partition wall 9. Multiple formation / partitioning.

When the upper container 1 and the lower container 2 are integrated,
As shown in FIGS. 3 and 4, the upper notch 5 of the upper partition plate 3
Upper communication holes 11A, 11B, 11C are formed by A, 5B, 5C and the upper end joint portion 6A of the lower partition plate 6, and the lower cutouts 8A, 8B, 8C of the lower partition plate 6 and the upper end of the upper partition plate 3 are formed. Lower communication holes 12A, 12 with joint 3A
B and 12C are formed.

In this embodiment, however, the upper partition plate 3 and the lower partition plate 6 constitute one partition wall 9 for partitioning the pressurizing reserve tank into a plurality of tank chambers 10, and a part of the partition wall 9 serves as an upper part. The upper cutouts 5A, 5B, 5C of the partition plate 3 are formed as upper communication holes 11A, 11B, 11C, and the lower cutouts 8A, 8B, 8C of the lower partition plate 6 are located at positions displaced from the upper cutouts 5A, 5B, 5C. Lower communication holes 12A, 12B,
It is formed as 12C.

If the upper container 1 and the lower container 2 are formed separately and their joints 3A, 6A are joined, the upper communicating holes 11A, 11B, 11C are formed without impairing the function of communicating, and the pressurizing type The air in the tank chamber 10 of the reserve tank freely flows into and out of the tank chamber 10 through the upper communication holes 11A, 11B, 11C. The cooling water in the tank chamber 10 in the pressure type reserve tank is connected to each of the lower communication holes 1
It freely flows into and out of each tank chamber 10 via 2A, 12B, and 12C.

According to the above construction, the upper container 1 and the lower container 2 are made of the resin material separately by the upper and lower molds. At this time, the upper notch 5 of the upper container 1 is formed.
A, 5B, 5C and lower cutouts 8A, 8B of the lower container 2,
In order to mold 8C, a structure such as a conventional example in which a slide mold that operates at a right angle to the notch is installed in the upper and lower molds is unnecessary, and only the upper and lower mold structures have upper notches 5A, 5B, 5C,
Since the lower notches 8A, 8B, 8C can be formed, the mold structure can be simplified.

Even if such a structure is adopted, the upper communication holes 11A, 11 of each partition wall 9 in the pressurizing type reserve tank.
B, 11C and the lower communication holes 12A, 12B, 12C are
Since it is at the shifted position, the partition wall 9 can be strengthened. Therefore, the pressurizing type reserve tank can secure sufficient strength without the partition wall 9 opening to the left and right (the direction perpendicular to the longitudinal direction) even when the internal pressure is applied.

[0025]

As described above, according to the present invention,
The upper container and the lower container are made of resin material separately by the upper and lower molds. At this time, the upper notch of the upper container and the lower notch of the lower container are formed at right angles to the above notches as in the conventional example. Since the structure for installing the slide mold that operates in the above manner in the upper and lower molds is not necessary and the upper notch and the lower notch can be formed only by the upper and lower mold structures, the mold structure can be simplified.

Further, since the upper communication hole and the lower communication hole of each partition in the pressure type reserve tank are located at different positions, even if pressure is applied to the pressure type reserve tank,
Sufficient strength can be secured without opening the partition walls to the left and right.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a pressure type reserve tank according to an embodiment of the present invention.

FIG. 2 is an external view of the pressure type reserve tank.

FIG. 3 is a cross-sectional view showing partition walls on both sides in the longitudinal direction of the pressure type reserve tank.

FIG. 4 is a cross-sectional view showing a partition wall in the middle in the longitudinal direction of the pressure type reserve tank.

5 is a sectional view taken along line XX of FIG.

FIG. 6 is an explanatory diagram showing a conventional cooling water circuit including a pressurized reserve tank.

FIG. 7 is a partial sectional side view of a conventional pressure type reserve tank.

FIG. 8 is a plan view showing an upper container and a lower container of the same pressure type reserve tank before assembly.

FIG. 9 is a perspective view showing a communication hole of the pressure type reserve tank.

[Explanation of symbols]

 1 Upper Container 2 Lower Container 3 Upper Partition Plate 3A Upper End Joint 4 Upper Tank Tank 5A Upper Notch 5B Upper Notch 5C Upper Notch 6 Lower Partition Plate 6A Lower End Joint 7 Lower Tank Tank 8A Lower Notch 8B Lower Notch 8C Lower Notch 9 Partition 10 Tank chamber 11A Upper communication hole 11B Upper communication hole 11C Upper communication hole 12A Lower communication hole 12B Lower communication hole 12C Lower communication hole

Claims (1)

[Claims] 1. An upper container (1) having a lower end opening divided into a plurality of upper tanks (4) by a plurality of upper partition plates (3), and a lower partition plate (1) at the same position as the upper partition plate (3). 6) is provided and is divided into a plurality of lower tank tanks (7) and is composed of a lower container (2) having an upper opening, a lower end joint portion (3A) of the upper container (1) and an upper end of the lower container (2). By integrally joining together the joining portions (3A), the upper tank tank (4) and the position corresponding to this can be provided via the partition wall (9) composed of the upper partition plate (3) and the lower partition plate (6). Tank room (1 consisting of lower tank (7)
0) In a pressure reserve tank made of resin formed and divided into a plurality of sections, an upper partition plate (3) of an upper container (1) is provided with an upper notch (5A, 5B, 5C) reaching a lower end joint portion (3A) thereof. ) Is formed, the lower cutouts (8A, 8B, 8C) reaching the upper end joint portion (3A) of the lower partition plate (6) of the lower container (2) are displaced from the upper cutouts (5A, 5B, 5C). The upper container (1) and the lower container (2) are integrated to form the upper notch (5A, 5B, 5C) of the upper partition plate (3) and the upper end joint (3A) of the lower partition plate (6). And upper communication hole (11A,
11B, 11C), and the lower notch (8A, 8B, 8C) of the lower partition plate (6) and the upper end joint portion (3A) of the upper partition plate (3) form a lower communication hole (12A,
12B, 12C) is formed, the pressure type reserve tank.