RU228137U1 - AQUAVENDING MACHINE FILLING CHAMBER WITH SPRING-LOADED DOOR - Google Patents

Abstract

The utility model relates to aqua vending machines, i.e. to vending machines for selling drinking water by automatically controlled dispensing of water into a water buyer's container installed in a water filling chamber equipped with a spring-loaded door. The technical problem consists in the need to ensure shock-free closing of the spring-loaded door of the filling chamber. The technical result consists in ensuring an optimal balance of the door closing forces and the resistance to this closing at the moment of contact of the door with the rod of the door piston shock absorber. The filling chamber of the aqua vending machine with a spring-loaded door is a metal box 1 with an opening 2 closed by a spring-loaded door 3. The chamber contains a branch pipe 5 for filling water into the water buyer's container, a door stop 6 and a door piston shock absorber 7 with a rod 8. The shock absorber 7 is mounted on the stop 6. 3 fig.

Description

The utility model relates to aqua vending machines, i.e. to vending machines for drinking water by automatically controlled dispensing of water into the water buyer's container, installed in a water filling chamber equipped with a spring-loaded door.

State of the art

A filling chamber for an aqua vending machine with an automatic door (20) equipped with a drive (21) and sensors for its position is known (see the description of the utility model for patent RU No. 139049 U1, published on 10.04.2014 Bulletin No. 10).

The features of the known chamber, common with the features of the chamber claimed for patenting, consist of the presence of a door as such and a means of ensuring its permanently closed state with the possibility of arbitrary opening.

The reason preventing the achievement of the technical result in the known chamber, which is ensured by the technical solution declared for patenting, lies in the design and technological complexity of the specified means of ensuring a permanently closed state of the door with the possibility of arbitrary opening of the door (the complexity lies in the presence of a door drive and door position sensors).

A filling chamber of an aqua vending machine with a spring-loaded door is known (prototype: description of the invention to patent RU No. 2810670 C1, IPC B67D 7/02, B67D 7/06, published on 28.12.2023 in Bulletin No. 1).

The features of the known filling chamber (prototype), common with the features of the declared filling chamber, consist of the chamber door being spring-loaded.

The reason preventing the achievement of the technical result in the known filling chamber (in the prototype), which is ensured by the filling chamber claimed for patenting, is the occurrence of the door hitting the walls of the filling chamber when closing the door under the action of a strong door spring, the significant compression force of which is necessary for the rapid closing of the door.

The technical problem that the technical solution claimed for patenting is aimed at solving is the need to ensure shock-free closing of the spring-loaded door of the filling chamber.

Disclosure of the essence of the utility model

The technical result mediating the solution of the specified technical problem consists in creating such a force counteracting the door spring on the final path of the door movement in the direction of its closing, in which, on the one hand, the said impact is eliminated, and on the other hand, the speed of rotation of the door is maintained over an angle close to 180° (i.e. close to the maximum angle of opening of the door), so that an optimal balance of the forces of closing the door and the resistance to this closing at the moment of contact of the door with the rod of the piston shock absorber of the door is ensured.

The technical result is achieved in that the filling chamber of the aqua vending machine with a spring-loaded door contains a door stop installed on the filling chamber in the area of its entrance opening in the upper part of the filling chamber with the possibility of spring-loaded support of the door on this stop in the closed position of the door, and a piston door shock absorber installed on this stop at a distance from the axis of rotation of the door not exceeding half the width of the door.

Brief description of the drawings

Fig. 1 shows a schematic cross-sectional view of the claimed filling chamber with a vertical plane perpendicular to the plane of the filling chamber inlet opening, wherein the door is not shown in this figure, but is implied to be in its 180° open position; Fig. 2 shows the same view of the chamber as in Fig. 1, but with the difference that it also shows the door in the same cross-section at the moment of its mechanical contact with the maximum extended rod of the door piston shock absorber during its (the door) closing under the action of the door spring (the spring is not shown); Fig. 3 shows the same view of the chamber as in Fig. 1, but with the difference that it also shows the door in the same cross-section at the moment of its mechanical contact with the door stop, i.e. in its (the door) fully closed position (the spring is also not shown). Implementation of the Utility Model

The water filling chamber is a metal box 1, which has an entrance opening 2 of the chamber, closed by a spring-loaded door 3, made of translucent plastic, and which is installed on the front panel 4 of the aqua vending machine.

In the upper part of the water filling chamber (i.e. in the upper part of the box 1) a branch pipe 5 for filling water into the water buyer's container is installed, and in this upper part in the area of the entrance opening 2 a stop 6 of the door 3 is installed with the possibility of spring-loaded support of the door 3 on this stop 6 in the closed position of the door 3.

The filling chamber also contains a piston shock absorber 7 of the door 3, which contains a rod 8 connected to the piston of this shock absorber. In this case, this shock absorber 7 is mounted on a stop 6 at a distance from the axis of rotation of the door 3, not exceeding half the width of the door 3 (the axis is not shown).

This arrangement of the shock absorber 7 relative to the axis of rotation of the door 3 ensures, as was established in experiments, the necessary balance of oppositely directed forces: the compression force of the door spring, directed at closing the door 3, and the opposite force of pressing the rod 8 (and, accordingly, the piston) into the cylinder of the shock absorber 7 at the ultimate closing path of the door, since with this arrangement of the shock absorber 7, the necessary force lever of action of the door 3 on the rod 8 is ensured.

In addition, the location of the stop 6 in the upper part of the filling chamber most optimally ensures this power lever, since it is obvious that the technically possible location of the stop 6 in the side part of the chamber (opposite the axis of rotation of the door 3) can complicate the creation of the said power lever, and the location of the stop 6 in the lower part of the chamber can interfere with the horizontal movement of the water buyer's container when it is placed in the filling chamber under the branch pipe 5.

The filling chamber operates as follows.

The water buyer, overcoming the resistance of the door spring, opens door 3 of the water filling chamber by 180° (Fig. 1, where such an open door 3 is implied, but not shown). Then the buyer, holding the door in such an open position, places his container in the filling chamber under the nozzle 5 and releases the door 3. Under the action of the door spring, the door 3 rotates rapidly in the direction of its closing, and when it rotates by approximately 170°, it comes into mechanical contact with the free end of the rod 8 of the piston shock absorber 7 (Fig. 2), which is located at a distance from the axis of rotation of the door 3 that does not exceed half the width of the door 3, which provides an increased force effect on the rod 8 from the side of the door 3 due to the formation of a corresponding force lever with a simultaneous decrease in the force from the side of the spring due to the small angle remaining for closing the door 3. Under such circumstances, as has been established in numerous experiments, the speed of rotation of the door on its final path of rotation, when the remaining angle is approximately 10°, the speed of rotation of the door decreases sharply, and then it rotates with a significant deceleration and ultimately comes into impact-free mechanical contact with the stop 6 (Fig. 3). After this, the buyer starts the process of dispensing water into his container installed in the filling chamber under the branch pipe 5, and this process is carried out automatically with the door 3 closed, which, due to its execution from transparent plastic, allows the buyer to observe the process of dispensing water into his container. After filling the container with water, the buyer opens the door 3 again, overcoming the action of the door spring, removes the container filled with water from the filling chamber and releases the door 3, which closes without impact, as described above.

Claims (1)

A filling chamber of an aqua vending machine with a spring-loaded door, characterized in that it contains a door stop installed on the filling chamber in the area of its entrance opening in the upper part of the filling chamber with the possibility of spring-loaded support of the door on this stop in the closed position of the door, and a piston door shock absorber installed on this stop at a distance from the axis of rotation of the door not exceeding half the width of the door.