CN112325252B

CN112325252B - Multilayer waterproof optical structure

Info

Publication number: CN112325252B
Application number: CN202011304518.6A
Authority: CN
Inventors: 赵辉; 项诚来; 李铁; 孙文; 张璜; 龚晨
Original assignee: CSSC Systems Engineering Research Institute
Current assignee: CSSC Systems Engineering Research Institute
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2022-07-26
Anticipated expiration: 2040-11-19
Also published as: CN112325252A

Abstract

The invention provides a multi-layer waterproof optical structure of optical equipment for outdoor use, wherein the optical equipment adopts a multi-cavity structure and comprises an equipment outer cavity, a plurality of optical lenses independently arranged on the outer cavity, a plurality of equipment separation cavities arranged in the equipment outer cavity and below the optical lenses, and an optical assembly arranged in the equipment separation cavities; a first-stage waterproof seal is arranged between the equipment outer cavity and the optical lens; and a secondary waterproof seal is arranged between the cavity wall of the separation cavity in the equipment and the optical lens and between the cavity wall of the outer cavity of the equipment and the cavity wall of the inner cavity of the equipment through elastic seal rings. The invention designs an effective waterproof structure, thereby effectively avoiding the damage of the optical equipment caused by water leakage or water inflow and effectively improving the waterproof sealing effect of the optical equipment.

Description

Multilayer waterproof optical structure

Technical Field

The invention relates to the technical field of optical equipment, in particular to an outdoor multilayer waterproof optical structure of optical equipment.

Background

In life and production, a lot of equipment such as lamplight and optics are used in the open air, and the open air equipment inevitably encounters natural wading and damp environments such as rainfall and condensation. Since there are many electronic devices and printed boards inside the optical apparatus, moisture entering the inside of the apparatus may cause a short circuit of a circuit, corrosion of a solder joint, or damage of the device, so that the optical apparatus for outdoor use must be strictly designed to be waterproof. Furthermore, optical devices typically employ a single chamber design, and almost all of the working cells fail once moisture enters the device.

Because there are errors in the difference of each spare part material of optical equipment and machining precision, consequently under the effect of expend with heat and contract with cold in assembly process and use, can form different gaps. In order to make these gaps have a sealing effect, as shown in fig. 1 or fig. 2, the existing outdoor optical equipment usually achieves the sealing effect through a layer of sealing gasket or O-ring, that is, an elastic waterproof material is added on the contact surface around the connecting gap, and the elastic material is compressed by the assembling stress, so that the elastic material deforms and fully contacts with the peripheral contact surface, thereby filling the gap and achieving the purpose of sealing.

The waterproof sealing mode has the advantages of simple structure and lower production cost, but the service life is short in the actual use process, the waterproofness is poor, the water leakage or water inflow phenomenon is easy to occur, particularly for optical equipment with low machining precision requirements, if the flatness is not enough or a local point has a defect during the production of a contact surface, the ideal waterproof effect is difficult to achieve only through single-layer sealing. In order to achieve a better lighting effect, the optical device is usually installed at a higher position, and once the water leakage problem occurs, the maintenance difficulty is increased, and the maintenance cost is very high.

Disclosure of Invention

In view of the above, the present invention is to overcome the defects in the prior art, and provides a multi-layer waterproof optical structure for an optical device used in the open air, which is characterized in that: the optical equipment adopts a multi-cavity structure, and comprises an equipment outer cavity, a plurality of optical lenses arranged on the outer cavity independently, a plurality of equipment separation cavities arranged in the equipment outer cavity and below the optical lenses, and an optical assembly arranged in the equipment separation cavities; a first-stage waterproof seal is arranged between the equipment outer cavity and the optical lens; and a secondary waterproof seal is arranged between the cavity wall of the separation cavity in the equipment and the optical lens and between the cavity wall of the outer cavity of the equipment and the cavity wall of the inner cavity of the equipment through elastic seal rings.

Furthermore, the primary waterproof seal comprises an upper compression ring and an optical lens, and the upper compression ring is connected with the equipment outer cavity and the optical lens through elastic sealing gaskets.

Further, the integral elastic sealing gasket is configured to simultaneously seal a gap between the upper clamp ring and the outer cavity of the device and a gap between the upper clamp ring and the optical lens, a width between an inner diameter and an outer diameter of the upper clamp ring is larger than a width between the inner diameter and the outer diameter of the elastic sealing gasket, and the upper clamp ring forms a sealing fastener while fixing the optical lens.

Furthermore, a plurality of separation cavity walls are arranged in an outer cavity of the optical device, and a first elastic sealing ring is arranged at the joint of the separation cavity walls and the outer cavity of the optical device; a second elastic sealing ring is arranged between the wall of the separation cavity and the optical lens; the first elastic sealing ring and the second elastic sealing ring form the secondary waterproof seal.

Furthermore, the first elastic sealing ring and the second elastic sealing ring are arranged in a groove in the wall of the separation cavity.

Furthermore, the first elastic sealing ring is arranged in a groove of the outer cavity of the equipment, and the groove is arranged corresponding to the bottom surface of the wall of the separation cavity.

The elastic sealing gasket, the first elastic sealing ring and the second elastic sealing ring are made of rubber, plastics or soft metal materials.

Preferably, the inner part of the equipment outer cavity is divided into a plurality of independently sealed equipment compartments by the equipment outer cavity and the walls of the equipment inner compartment compartments arranged in the equipment outer cavity.

Aiming at the hidden waterproof sealing danger of the existing optical equipment, the invention designs the effective waterproof structure, so that the damage of the optical equipment caused by water leakage or water inflow is effectively avoided, and the waterproof sealing effect of the optical equipment is effectively improved.

Drawings

Fig. 1 is a cross-sectional view of an optical device sealed by a layer of gasket.

Fig. 2 is a cross-sectional view of an optical device sealed by an O-ring.

Fig. 3 is an outline view of an optical device provided by the present invention with a multi-cavity, multi-layer sealing mechanism.

Fig. 4 is a cross-sectional view of an optical device that provides a multi-layer sealing mechanism according to the present invention.

Detailed Description

The invention divides the sealing structure link into a multi-layer sealing mechanism design and a multi-cavity design. Each layer of sealing mechanism works independently and adopts an elastic material pressing mode, and an upper pressing surface is added outside an outer cavity of the traditional equipment; a multi-layer sealing structure is employed to increase the level of protection of the optical device from water and water vapor ingress. Meanwhile, the inside of the optical equipment is divided into a plurality of mutually independent sealed cavities, and the multi-cavity design can avoid the occurrence of the condition that all the equipment is damaged once water leakage occurs.

The invention is further described with reference to the following figures and detailed description.

The invention is mainly applied to optical lighting equipment with a plurality of lighting lamps, the optical lighting equipment comprises a plurality of lighting lamps and lighting lamp ballasts matched with the lighting lamps, the lighting equipment adopts a multi-cavity structure and is divided into an equipment outer cavity and an equipment inner partition cavity, and a light-transmitting window of the plurality of lighting lamps is arranged on the outer cover of the front side of the box-shaped equipment outer cavity and is used for transmitting light of the lighting lamps. The light-transmitting window is composed of an upper compression ring, an elastic sealing gasket and an optical lens, the optical lens is used for gathering lighting light, and the upper compression ring, the equipment outer cover and the optical lens are connected through the elastic sealing gasket to achieve primary waterproof sealing. The optical lens is embedded into the opening of the outer cavity of the equipment, the integral elastic sealing gasket is arranged to seal a gap between the upper compression ring and the outer cavity of the equipment and simultaneously compress and seal the gap between the compression ring and the optical lens, the width between the inner diameter and the outer diameter of the upper compression ring is larger than the width between the inner diameter and the outer diameter of the elastic sealing gasket, and the upper compression ring fixes the optical lens and forms a sealing fastener.

The inner structure under the outer cover of the equipment is divided into a plurality of inner separation cavities, each cavity is internally provided with a pair of illuminating lamps and corresponding illuminating lamp ballasts, the wall of each separation cavity is provided with a groove, and a first elastic sealing ring is arranged at the joint of the wall of the lower end of each inner separation cavity and the outer cavity of the equipment; a second elastic sealing ring is arranged between the wall of the separation cavity and the optical lens; the first elastic sealing ring and the second elastic sealing ring form the secondary waterproof seal of the lighting equipment. The two resilient sealing rings again provide a secondary measure of water resistance to the inner compartment. Under the second waterproof measure, moisture is difficult to enter gaps of the inner partition cavity of the equipment, the optical lens and the outer cavity of the equipment through the elastic sealing gasket, and the waterproof performance of the equipment is further improved through the elastic sealing ring. In addition, the separation cavity separates the equipment into a plurality of optical equipment units which work independently, each relatively independent equipment unit is designed to be waterproof for a plurality of times, and even if one equipment unit breaks down, the work of other equipment units is not influenced, and the working reliability of the equipment is greatly improved.

The elastic sealing gasket, the first elastic sealing ring and the second elastic sealing ring can be made of rubber, high-density plastic or soft metal materials. The general waterproof equipment can provide better sealing effect by adopting a plastic sealing ring or a rubber sealing ring, and the durability and the stability of the sealing ring made of natural rubber are quite high. However, in an environment requiring a relatively high waterproof sealing level, plastic or rubber still has a problem of poor reliability, and at this time, soft metal such as lead or silver can be used as a sealing material to meet a higher waterproof requirement.

The working process is as follows: elastic sealing pad blocks moisture effectively outside optical lens and equipment exocoel gap, because ageing or processing, be equipped with the defect or when the snowfall volume is bigger, probably have a small amount of moisture entering equipment, at this moment elastic sealing ring carries out the sealed protection of second grade to effectively improve the waterproof life of sealed water-proof effects, extension equipment.

The invention effectively improves the waterproof sealing performance and the service life of the optical equipment. The device is designed in a mode that a plurality of device units work independently, so that the influence of a damaged device unit on other device units is effectively reduced, and the failure rate of the device is reduced.

According to the invention, through the multilayer waterproof design and the design that a plurality of equipment units work independently, the original waterproof sealing performance is greatly improved, and the condition that all equipment is damaged once water leakage occurs is avoided. Therefore, the invention provides reliable sealing work for the illumination work of the optical equipment, effectively prolongs the service life of the optical equipment, reduces the maintenance cost and provides more reliable illumination guarantee for the life and the production of people.

The above examples are intended only to illustrate the technical solution of the present invention and not to limit it, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.

Claims

1. An optical equipment multilayer waterproof optical structure for open air use, characterized in that: the optical equipment adopts a multi-cavity structure, and comprises an equipment outer cavity, a plurality of optical lenses arranged on the outer cavity independently, a plurality of equipment separation cavities arranged in the equipment outer cavity and below the optical lenses, and an optical assembly arranged in the equipment separation cavities; a first-stage waterproof seal is arranged between the equipment outer cavity and the optical lens; a secondary waterproof seal is arranged between the cavity wall of the separation cavity in the equipment and the optical lens and between the cavity wall of the outer cavity of the equipment and an elastic seal ring respectively;

the inner part of the equipment outer cavity is divided into a plurality of independently sealed equipment separating cavities by the equipment outer cavity and the wall of the equipment inner separating cavity arranged in the equipment outer cavity;

the primary waterproof seal comprises an upper compression ring and an optical lens, and the upper compression ring is connected with the equipment outer cavity and the optical lens through elastic sealing gaskets;

a plurality of separation cavity walls are arranged in an equipment outer cavity of the optical equipment, and a first elastic sealing ring is arranged at the joint of the separation cavity walls and the equipment outer cavity; a second elastic sealing ring is arranged between the wall of the separation cavity and the optical lens; the first elastic sealing ring and the second elastic sealing ring form the second-stage waterproof seal.

2. The optical device multilayer water repellent optical structure according to claim 1, wherein: the integral elastic sealing gasket is arranged to simultaneously seal a gap between the upper compression ring and the equipment outer cavity and a gap between the upper compression ring and the optical lens, the width between the inner diameter and the outer diameter of the upper compression ring is larger than the width between the inner diameter and the outer diameter of the elastic sealing gasket, and the upper compression ring fixes the optical lens and simultaneously forms a sealing fastener.

3. The optical device multilayer water repellent optical structure according to claim 1, wherein: the first elastic sealing ring and the second elastic sealing ring are arranged in a groove in the wall of the separation cavity, and the section diameter of the elastic sealing ring is larger than the depth of the groove in the wall of the separation cavity.

4. The multilayer water repellent optical structure for an optical device according to claim 1, wherein: the first elastic sealing ring is arranged in a groove of the outer cavity of the equipment, and the groove is arranged corresponding to the bottom surface of the wall of the separation cavity.

5. The optical device multilayer water repellent optical structure according to claim 1, wherein: the elastic sealing gasket is made of rubber, plastic or soft metal materials.

6. The optical device multilayer water repellent optical structure according to claim 1, wherein: the first elastic sealing ring and the second elastic sealing ring are made of rubber, plastics or soft metal materials.