CN114104889A

CN114104889A - Elevator button epidemic prevention auxiliary panel

Info

Publication number: CN114104889A
Application number: CN202111267831.1A
Authority: CN
Inventors: 林子钧
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-01

Abstract

The invention provides an elevator key epidemic prevention auxiliary panel, which comprises a housing which can be buckled on the surface of an elevator key panel, wherein the interior of the housing corresponds to each elevator key, and is respectively provided with a key cover, and the center of the front surface of the housing is provided with an air hole; after the housing is buckled on the elevator key panel, a main cavity is formed between the housing and the elevator key panel, each key cavity is formed between each key cover and an elevator key, the on-off of an air path is realized between each key cavity and the main cavity through an electromagnetic valve, and air in the main cavity can only enter the key cavities and then flows out from an air hole in the front of the key cover; the auxiliary panel also comprises an air pump which charges air into the main cavity when the air pressure in the main cavity is lower than a set value; and a photosensitive sensor is also arranged in each key cover, and when the photosensitive sensor is shielded from light, the corresponding electromagnetic valve is opened, otherwise, the electromagnetic valve is kept closed. The auxiliary panel can enable the passenger to make the key respond to the action under the condition that the finger does not contact the key at all.

Description

Elevator button epidemic prevention auxiliary panel

Technical Field

The invention relates to the field of elevator accessories, in particular to an auxiliary panel of an elevator key.

Background

The keys of the conventional public elevator are all contact keys, so that a large amount of bacteria and viruses can be infected in the use process of a large amount of mobile personnel in public places. In the case of certain major public health safety emergencies, it is difficult to prevent the contact infection phenomenon. If in epidemic situation, on a large number of public elevator key panels, although some precautionary measures are adopted, the hands of passengers still can not be prevented from contacting the same object together, and obviously, the risk of contact type infection also exists.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an elevator key epidemic prevention auxiliary panel, which enables a passenger to make a key respond without touching the key with a finger.

The technical scheme adopted by the invention for solving the technical problems is as follows: the elevator key epidemic prevention auxiliary panel comprises a housing which can be buckled on the surface of an elevator key panel, wherein a key cover is respectively arranged in the housing corresponding to each elevator key, the front surface of the key cover is transparent, and an air hole is formed in the center of the front surface; after the housing is buckled on the elevator key panel, a main cavity is formed between the housing and the elevator key panel, each key cavity is formed between each key cover and each elevator key, the on-off of an air path is realized between each key cavity and the main cavity through an electromagnetic valve, and air in the main cavity can only enter the key cavities and then flows out from an air hole in the front of the key cover; the auxiliary panel also comprises an air pump, and when the air pressure in the main cavity is lower than a set value, the air pump inflates the main cavity until the air pressure in the main cavity exceeds the set value; and a photosensitive sensor is also arranged in each key cover, when the photosensitive sensor is shielded from light, the corresponding electromagnetic valve is opened, otherwise, the electromagnetic valve is kept in a closed state.

Preferably, the pore diameter of the air hole is 2 mm-4 mm.

Preferably, when the air pressure in the main cavity is lower than 1.2 standard atmospheric pressures, the air pump inflates the main cavity, and the air pump stops inflating until the air pressure in the main cavity reaches 1.3 standard atmospheric pressures.

The invention has the beneficial effects that: the elevator key epidemic prevention auxiliary panel is buckled on the surface of an elevator key panel, when a person taking an elevator presses a key, when fingers move to the position right in front of a key cover, the photosensitive sensor in the key cover forms shading, at the moment, a key cavity in the key cover is opened with an electromagnetic valve in an air path between the key cavity and a main cavity, high-pressure air in the main cavity is quickly injected into the key cavity, meanwhile, due to the approach of the fingers, the air resistance of an air hole of the key cover is large, so that an elevator key in the key cavity is impacted by strong air pressure, the elevator key is pressed down, and after the fingers leave the key cover, the high-pressure air in the key cavity is quickly discharged from the air hole to the outside, and the elevator key is reset. Therefore, the auxiliary panel can ensure that the passenger does not completely contact the object, the key demand can be realized, and the contact infection phenomenon can be avoided to a great extent.

Drawings

Fig. 1 is a schematic view of an embodiment of the elevator key epidemic prevention auxiliary panel.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

The invention is further illustrated with reference to the following figures and examples:

in the embodiment shown in fig. 1 and 2, the elevator key epidemic prevention auxiliary panel comprises a housing 2 which can be buckled on the surface of an elevator key panel, a key cover 21 is respectively manufactured inside the housing 2 corresponding to each elevator key 11, the front surface of the key cover 21 is transparent, an air hole 2100 is formed in the center of the front surface, and the aperture of the air hole 2100 is 2 mm-4 mm; after the housing 2 is buckled on the elevator key panel 1, a main cavity 20 is formed between the housing 2 and the elevator key panel 1, each key cavity 210 is formed between each key cover 21 and each elevator key 11, and the connection and disconnection of an air passage are respectively realized between each key cavity 210 and the main cavity 20 through one electromagnetic valve 3; the air in the main cavity 20 can only enter the key cavity 210 and then flows out from the air hole 2100 on the front surface of the key cover 21; the auxiliary panel further comprises an air pump 4, the air pump 4 is coupled to an air pump control module (not shown) together with an electronic pressure gauge (not shown) disposed inside the main cavity 20, so that when the air pressure inside the main cavity 20 is lower than a set lower limit value, the air pump inflates the main cavity 20 until the air pressure inside the main cavity 20 exceeds a set value and reaches an upper limit value; and a photosensitive sensor 5 is also arranged in each key cover 21, when the photosensitive sensor 5 is shielded from light, the corresponding electromagnetic valve 3 is opened, otherwise, the electromagnetic valve 3 is kept in a closed state.

Specifically, when the air pressure in the main chamber 20 is lower than 1.2 standard atmospheres, the air pump 4 inflates the main chamber 20 until the air pressure in the main chamber 20 reaches 1.3 standard atmospheres, and then stops inflating. The design basis is as follows: the elevator button 11 is normally pressed by 0.5 kilogram (5N)When force is applied, the button can be pressed down; the radius of the elevator key 11 is about 1cm, namely the area is 0.000314m²Therefore, the air pressure in the key cavity 210 needs to be higher than the standard air pressure by (5/0.000314) Pa ≈ 0.16 standard air pressure, and considering the appropriate loss of the air pressure in the process of flushing the main cavity 20 into the key cavity 210, the lower limit of the pressure in the main cavity 20 is only required to be kept at 1.2 standard air pressures, and the upper limit of the pressure in the main cavity 20 is both the material strength and the frequent inflation degree of the housing 2, and an upper limit value which is not very high (higher strength of the material) and is not too low (frequent inflation is required) is properly selected, for example, 1.3 standard air pressures.

It should be noted that when the photosensitive sensor 5 is shielded from light, the corresponding solenoid valve 3 is turned on, which does not mean that the photosensitive sensor 5 is completely shielded from light, but the light intensity is lower than a set lower limit value, and the specific lower limit value is set manually according to the actual illumination condition of the elevator in which the photosensitive sensor 5 is located (mainly the brightness of the illumination lamp in the elevator).

The elevator key epidemic prevention auxiliary panel is buckled on the surface of an elevator key panel, when a person taking an elevator presses a key, when fingers move to the position right in front of the key cover 21, the elevator key epidemic prevention auxiliary panel can shield light from the photosensitive sensor 5 in the elevator key cover, at the moment, the electromagnetic valve 3 in an air path between the key cavity 210 in the key cover 21 and the main cavity 20 is opened, high-pressure air in the main cavity 20 is quickly injected into the key cavity 210, meanwhile, due to the approach of the fingers, the air resistance of an air hole of the key cover 21 is large, so that the elevator key 11 in the key cavity 210 is impacted by strong air pressure, the elevator key 11 is pressed, and after the fingers leave the key cover 21, the high-pressure air in the key cavity 210 is quickly discharged from the air hole 2100 outwards, and the elevator key 21 is reset. Here, it is worth mentioning that when objects such as human clothes are close to the elevator key panel, even if the electromagnetic valves corresponding to some key cavities 210 are opened, since the air enters the key cavities 210, the air holes 2100 corresponding to the key cavities 210 are difficult to obtain air resistance like human fingers, so that the pressure is directly released through the air holes 2100, and it is difficult to form enough pressure for pushing the elevator keys 11 in the key cavities 210, so that the phenomenon of obvious mistaken touch caused by the fact that the soft clothes of the human body are close to the elevator key panel is not formed.

The auxiliary panel can ensure that the passenger does not completely contact the object, the key demand can be realized, and the contact infection phenomenon can be avoided to a great extent.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of the invention is intended to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

Claims

1. The utility model provides an elevator button epidemic prevention auxiliary panel which characterized in that: the elevator key panel comprises a housing (2) which can be buckled on the surface of an elevator key panel (1), wherein a key cover (21) is respectively manufactured inside the housing (2) corresponding to each elevator key (11), the front surface of the key cover (21) is transparent, and an air hole (2100) is formed in the center of the front surface; after the housing (2) is buckled on the elevator key panel (1), a main cavity (20) is formed between the housing (2) and the elevator key panel (1), each key cavity (210) is formed between each key cover (21) and each elevator key (11), the connection and disconnection of an air path are realized between each key cavity (210) and the main cavity (20) through one electromagnetic valve (3), and air in the main cavity (20) only can enter the key cavities (210) and then flows out of an air hole (2100) in the front of the key covers (21); the auxiliary panel also comprises an air pump (4), and when the air pressure in the main cavity (20) is lower than a set value, the air pump (4) inflates the main cavity (20) until the air pressure in the main cavity (20) exceeds the set value; and a photosensitive sensor (5) is also arranged in each key cover (21), when the photosensitive sensor (5) is shielded from light, the corresponding electromagnetic valve (3) is opened, and if not, the electromagnetic valve (3) is kept in a closed state.

2. The elevator button epidemic prevention auxiliary panel of claim 1, characterized in that: the aperture of the air hole (2100) is 2 mm-4 mm.

3. The elevator key epidemic prevention auxiliary panel according to claim 1 or 2, characterized in that: when the air pressure in the main cavity (20) is lower than 1.2 standard atmospheric pressures, the air pump (4) inflates the main cavity until the air pressure in the main cavity (20) reaches 1.3 standard atmospheric pressures, and then the inflation is stopped.