JPS621088B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gun for supplying cooling water to a radiator.

An object of the present invention is to perform chuck and tight sealing without deforming the mouthpiece, which is the water supply port of the radiator, and to quickly perform attachment/detachment operations.

In the gun that supplies cooling water to the radiator,
Water is supplied after applying vacuum pressure to rapidly supply water, but when installing it to the water supply port of the radiator, it is necessary to prevent leakage of cooling water, and to prevent leakage of vacuum pressure, it is necessary to attach the gun to the radiator. It must be checked and sealed completely.

Conventionally, the radiator was hooked onto the curled portion of the rim of the water inlet of the radiator, and tightened by a cylinder or handle, and a compression spring or the like was used to achieve the chuck and tight fit. As a result, the water inlet of the radiator was deformed by the tightening force, and the radiator could not be attached or detached with a single touch, making it difficult to operate.

The present invention provides a water gun that solves the above-mentioned conventional problems. Embodiments of the present invention will be described below based on the drawings.

1 is the gun body, and on the side thereof there is a water supply port 8 for cooling water or antifreeze, etc., and a positive pressure port 18.
A vacuum port 20 is further provided.

A water supply pipe 2 having an opening 2a at its lower end is vertically installed in the center of the gun body 1 and communicates with the water supply port 8 through a communication hole 5. 3 is a seal upper plate, and 4 is a seal lower plate. 6 is a bracket, and 7 is a tightening nut for fixing the bracket 6 to the upper surface of the gun body 1 and at the same time sealing the bellow flamm 10 located between the guide member 13 and the gun body 1.

On the other hand, an airtight flexible body A having a bag-like cross section is attached to the lower surface of the gun body 1. As shown in the figure, this flexible body A has a configuration in which a bellow flamm 10 is attached to a gun body 1 via a retainer 9, and a protective rubber cover 11 is attached to the outside of this bellow flamm 10. A bag-shaped cavity 12 is formed inside. The outer diameter of the flexible body A is such that it can be fitted over the entire circumference of the side wall inside the water supply port 16 of the radiator.

A guide member 13 is set on the upper surface of a ring plate having a gap 14 formed integrally with the water supply pipe 2, and is fixed to the gun body 1 with a nut 7.
A packing 15 is fitted onto the outer periphery of the packing 15 so as to protrude through the inner opening 17 at the lower end. A gap 14 is provided between the guide member 13 and the water supply pipe 2, and is communicated with the vacuum port 20 through a passage 21.

A bag-shaped cavity 12 inside the bellows frame 10 constituting the flexible body A is communicated with the positive pressure port 18 via a passage 19.

Although not shown, the water supply port 8, the positive pressure port 18, and the vacuum port 20 are each provided with a piping circuit configuration that is piped and automatically controlled by an electromagnetic switching valve.

Next, the operation of the water supply gun of the present invention having the above structure will be explained.

First, the flexible body A is fitted into the water supply port 16 of the radiator. During this fitting, the guide member 13
The flexible body A is guided through the inner opening 17 at the lower end of the water supply port 6 to smoothly fit and position the flexible body A in the water supply port 16. The inner opening 17 at the lower end is opened by the packing 15 fitted on the outer periphery of the guide member 13.
This is to seal the parts.

Next, positive pressure is supplied from the positive pressure port 18.
As a result, positive pressure enters the cavity 12 through the passage 19, causing the flexible body A consisting of the bellow frame 10 and the protective rubber cover 11 to swell in the outer diameter direction and tightly contact the entire circumferential surface of the side wall inside the water supply port 16 of the radiator. While sealing and keeping the gun body 1 in a stable state, open the water inlet 1.
Chatting to 6.

In this state, vacuum pressure is applied from the vacuum port 20. As a result, the cooling water passages of the radiator and the engine are evacuated by the vacuum pressure drawn from the gap 14. When cooling water is supplied from the water supply port 8 after a certain period of time has elapsed under this vacuum effect, it enters the water supply pipe 2 through the communication hole 5 and is rapidly supplied into the radiator through the opening 2a.

According to the present invention, the means for attaching and detaching the water supply gun to the water supply port of the radiator has a bag-like cross section that forms a cavity on the lower surface of the gun body, and is fitted over the entire circumference of the side wall of the radiator water supply port to provide positive pressure. Since it is composed of an airtight flexible body that expands in the radial direction due to air, chucking and anti-chucking of the water supply gun to the water supply port are performed automatically by supplying and discharging positive pressure air, and when chucking, the water supply port Since no unreasonable partial expansion force is applied to the water inlet, there is no deformation of the water inlet, and the sealing function is achieved by closely contacting the entire circumference of the inner wall of the water inlet, and the guide is provided integrally with this flexible body. The member guides the installation of the water supply gun, and the smooth installation action and packing together with the flexible body provide a double seal, thereby reliably preventing leakage of water supply or vacuum pressure from the water supply port. However, it has the advantage that reliable water supply work can be achieved in a short time using a small and lightweight water supply gun.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a water gun according to the present invention, and FIG.
The figure is Fig. 1 - Line sectional view, Fig. 3 is Fig. 1 -
A line sectional view, FIG. 4 is a line sectional view taken from FIG. 1. 1... Gun body, 2... Water supply pipe, 5... Communication hole, 8... Water supply port, 10... Bellow frame, 11... Protective rubber cover, 12... Vacant room, 1
3... Guide member, 14... Gap, 15... Packing, 18... Positive pressure port, 20... Vacuum port, A... Flexible body.

Claims (1)

[Claims] 1 A water supply port, a positive pressure port, and a vacuum port are provided in the gun body, a water supply pipe communicating with the water supply port is installed vertically in the center of the gun body, and a bag-shaped cross section forming a cavity is provided on the lower surface of the gun body. It consists of an airtight flexible body that is fitted around the entire circumference of the side wall inside the radiator water supply port and expands in the radial direction due to positive pressure air, and a gasket that is integrated with this flexible body and is in close contact with the inner opening at the lower end of the radiator water supply port. a guide member that is fitted and protrudes from the inner opening at the lower end, a gap is formed between the guide member and the water supply pipe, and this gap communicates with the vacuum port; A water supply gun for a radiator, characterized in that a vacant chamber of a flexible body and a positive pressure port are communicated with each other.