CN2888802Y

CN2888802Y - Machine case

Info

Publication number: CN2888802Y
Application number: CN 200620056027
Authority: CN
Inventors: 敖峰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-03-06
Filing date: 2006-03-06
Publication date: 2007-04-11
Anticipated expiration: 2016-03-06

Abstract

The utility model relates to a chassis, which comprises a box body, a box lid, a first seal, a humidity controller and a connector, the said box lid presses the first seal on the said box body, through the said connector, an inner side piece and the second seal are arranged between the said box body and the box lid, the said second seal is positioned between the inner side piece and the counter surface of the box body or pressed between the inner side piece and the counter surface of the box lid, the said inner side piece, with the box body, and the box lid respectively constitute the inner cavity and the outer cavity of the box; the humidity controller is arranged on the said inner side piece hermetically, hygroscopic mouth and drainage mouth are respectively positioned in the inner cavity and the outer cavity of the inner side piece. The utility model solves the sealing question of the hygroscopic mouth of the humidity controller, meets the waterproof requirements of box body, the sealing structure increases the difficulty of that the humid air access the box, reduces the humidity controller working frequency of frequent enablement, and lengthens the life of the huimidity controller.

Description

A kind of cabinet

Technical field

The utility model relates to a kind of cabinet, more particularly, relates to a kind of waterproof and dampproof cabinet.

Background technology

Some casings need have waterproof and anti-seal function.As ground outdoor communication, electronics, electric cabinet, owing to be vulnerable to artificially deliberately or unintentionally damage, and often urban look and integrated environment are caused harmful effect, sapce charge is with expensive simultaneously, and the communication of some countries, electrical service merchant have proposed these equipment box are placed on the requirement of undergrounds such as melt pit.Possibility long period ponding in the melt pit after the rainfall, so the subsurface equipment cabinet requires reliable waterproof sealing.The airtight in addition melt pit midium or long term is in the high humility state, if humid air infiltrates through in the casing, will be easy to cause the electric fault of box equipment, shortens the life-span of equipment.Therefore equipment cabinets also requirement can control its humidity inside, thereby provide a proper humidity environment for internal unit.

Because these cabinets need be uncapped and carried out attended operation, thus generally between case lid and casing other potted components such as compressing rubber sealing ring or sealing gasket seal.But facts have proved that such sealing means is feasible for anti-liquid water, is insecure for preventing that humid air from entering in the casing still.After after a while, the humid air in the outer high humidity environment of casing is penetrated into cabinet inside by the microcosmic gap of encapsulant the most at last, makes the humidity that reaches quite high in the case.

At present, protection against the tide for the electronic electric equipment casing, the following scheme of main employing: as shown in Figure 1, compressive seal 2 between case lid 1 and the casing 4 is provided with the structure of humidity controller 3, when the external humidification air infiltrates casing 4 inside gradually on casing 4 walls, when humidity reaches predefined value in the case, be installed in the humidity controller 3 startup work on the tank wall, the interior humid air of respiratory box also makes humidity decline in the case, and then humid air is discharged outside the cabinet by the moisture exhausting port at humidity controller place.

There is following shortcoming in above-mentioned existing cabinet moisture-proof dosing technology scheme:

1, owing to will discharge moisture, humidity controller is installed on the tank wall, and the not sealing fully of its moisture exhausting port, causes the water of casing outside directly to enter casing through moisture exhausting port easily, is difficult to satisfy the particularly requirement of protected against the effects of immersion of casing waterproof.

2, under the not high situation of the moisture seal of box cover structure, make the humidity that reaches quite high in the case the most at last.Humid air in the outer high humidity environment of casing frequently is penetrated in the case by the microcosmic gap of encapsulant, and the work of humidity controller frequent starting causes the humidity controller life-span short.

The utility model content

The purpose of this utility model is, a kind of waterproof and dampproof cabinet is provided, and adopts the body structure of built-in humidity controller, solves the above-mentioned defective that prior art exists.

The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of cabinet, comprise casing, case lid, first seal, humidity controller and connector, described case lid is pressed on first seal on the described casing by described connector, it is characterized in that: the medial side part and second seal are set between described casing and described case lid, described second seal is between the mating surface of described medial side part and described casing or compacted between the mating surface of described medial side part and described case lid, and described medial side part and described casing and described case lid constitute the inner chamber and the exocoel of described cabinet respectively; Described humidity controller is installed on the described medial side part hermetically.

In cabinet described in the utility model, described exocoel comprises described case lid, first seal, wall box upper end, described medial side part and second seal, and described inner chamber comprises described medial side part, second seal and box body wall.

In cabinet described in the utility model, described medial side part is second case lid, and described wall box comprises the mating surface corresponding to this second case lid periphery, and described second seal is between this second case lid and described casing mating surface.

In cabinet described in the utility model, described second case lid and described case lid are rigidly connected, or described second case lid and described case lid are separate.

In cabinet described in the utility model, described medial side part is for being connected the inner panel of described wall box hermetically, and described second seal is between this inner panel periphery and described case lid mating surface.

In cabinet described in the utility model, the air-tightness of described second seal is better than the air-tightness of described first seal.

In cabinet described in the utility model, described first seal, second seal are sealing ring or sealing gasket.

In cabinet described in the utility model, described first seal and second seal interconnect.

Implement cabinet of the present utility model, its beneficial effect is:

1. humidity controller is installed in the case, has solved the sealing problem of humidity controller moisture exhausting port, satisfies the casing waterproof requirement.

2. by the two seals device is set, increases humid air and entered the interior difficulty of case, can effectively control humidity in the casing;

3. by the two seals device is set, reduced the growth rate of humidity in the casing, reduced humidity controller frequent starting work number of times, thereby prolonged the life-span of humidity controller.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the schematic diagram of existing casing dehumidifying technology scheme.

Fig. 2 is the schematic diagram of the utility model cabinet embodiment 1.

Fig. 3 is the schematic diagram of the utility model cabinet embodiment 2.

Embodiment

Embodiment 1:

As shown in Figure 2, waterproof and dampproof cabinet of the present utility model comprises casing 4, case lid 11, first seal 2, humidity controller 3 and connector (not shown), connector is connected case lid 11 on the casing 4, and first seal 2 that compression is arranged between the mating surface of the port of casing 4 and case lid 11 seals.

Second case lid 12 is set between casing 4 and case lid 11, connecting continuous chimb 41 hermetically on the sidewall around the casing 4, between the mating surface of the periphery of second case lid 12 and this chimb 41, second seal 5 is set, second case lid 12 is pressed on second seal 5 on the chimb 41 and (can compresses by connector, not shown) seal, the inner chamber 200 of a sealing and the exocoel 100 of sealing have so just been formed, this inner chamber 200 comprises second case lid 12, second seal 5, the chimb 41 of casing 4 walls and casing 4, this exocoel 100 comprises this case lid 11, first seal 2, the sidewall upper of casing 4, second case lid 12 and second seal 5.

Humidity controller 3 is installed on second case lid 12 hermetically, and its moisture absorption port and moisture exhausting port lay respectively at the lumen side and the outer chamber side of this second case lid 12.Humidity controller 3 is discharged into exocoel by the moisture absorption port that is arranged in lumen side with the humid air absorption of inner chamber and by the moisture exhausting port that is positioned at outer chamber side,

Humidity controller 3 can adopt existing humidity controller spare as electronics moisture control device etc., and it is a kind of parts of ACTIVE CONTROL box house humidity, the humidity trigger value of predeterminable startup work and shutdown.When the external humidification air penetrates into when making in the case humidity reach predefined startup working value in the case gradually, humidity controller startup work absorbs the inner chamber moisture and also is discharged in the exocoel 100.When the humidity in the seal cavity is enough big, exocoel 100 interior moistures pressures surpass the casing outside moisture presses, and moisture just progressively passes through first seal 2 to casing exosmosis hydrofuge, and hydrofuge arrives to a certain degree, when the humidity that casing is outside and exocoel is interior was suitable, inside and outside exchange of moisture reached balance.Humidity controller continues to absorb the moisture in the inner chamber 200 and be discharged in the exocoel 100, dehumidifies, and the humidity (being humidity in the case) of inner chamber 200 is dropped in the scope of hope.When inner chamber 200 humidity dropped to predefined shutdown value, the humidity controller autostop was finished a dehumidifying circulation.When humidity in the case is elevated to the startup working value, begin next dehumidifying circulation again.

First seal 2 and second seal 5 can adopt sealing ring or sealing gasket.In order to simplify the seal manufacturing process, first seal 2 and second seal 5 can be designed to link together, make things convenient for fabrication and processing.

In dehumidification process, when the humidity in the exocoel 100 during greater than the humidity in the inner chamber 200, the moistures in the exocoel 100 also can progressively permeate in casing by second seal 5.In order to improve dehumidification rate, reduce the speed that the moisture in the exocoel 100 permeates to inner chamber 200, first seal 2 and second seal 5 can be selected the encapsulant of different breathable moisture permeability, first seal 2 is selected the encapsulant with certain saturating wet ability for use, and second seal 5 is selected the encapsulant with better air-tightness for use.

In the present embodiment, second case lid 12 is separate with case lid 11.In other embodiments, can adopt second case lid 12 and case lid 11 rigidly connected structures, when connector is connected case lid 11 when compressing first seal 2 on the casing 4, second case lid 12 is pressed on second seal 5 on the chimb 41 simultaneously.

Embodiment 2:

As shown in Figure 3, embodiment 2 is identical substantially with embodiment 1, difference is: connect hermetically on casing 4 sidewalls or extend inner panel 13 continuously, this moment, inner chamber 200 comprised inner panel 13, second seal 5, casing 4 walls and case lid 11, and exocoel 100 comprises sidewall upper, inner panel 13 and second seal 5 of this case lid 11, first seal 2, casing 4.Second seal 5 is compacted between these inner panel 13 peripheries and case lid 11 mating surfaces.

The installation of second seal 5 for convenience, inner panel 13 is provided with flanging.In addition, inner panel 13 can be arranged to of part, and the seal cavity that form this moment is less; Inner panel 13 also can arrange that continuously the seal cavity that form this moment is bigger along casing 4 sidewalls annular.

Claims

1, a kind of cabinet, comprise casing, case lid, first seal, humidity controller and connector, described case lid is pressed on first seal on the described casing by described connector, it is characterized in that: the medial side part and second seal are set between described casing and described case lid, described second seal is between the mating surface of described medial side part and described casing or compacted between the mating surface of described medial side part and described case lid, and described medial side part and described casing and described case lid constitute the inner chamber and the exocoel of described cabinet respectively; Described humidity controller is installed on the described medial side part hermetically.

2, cabinet according to claim 1 is characterized in that: described exocoel comprises described case lid, first seal, wall box upper end, described medial side part and second seal, and described inner chamber comprises described medial side part, second seal and box body wall.

3, cabinet according to claim 2 is characterized in that: described medial side part is second case lid, and described wall box comprises the mating surface corresponding to this second case lid periphery, and described second seal is between this second case lid and described casing mating surface.

4, cabinet according to claim 3 is characterized in that: described second case lid and described case lid are rigidly connected, or described second case lid and described case lid are separate.

5, cabinet according to claim 2 is characterized in that: described medial side part is for being connected the inner panel of described wall box hermetically, and described second seal is between this inner panel periphery and described case lid mating surface.

6, according to the described cabinet of one of claim 1 to 5, it is characterized in that: the air-tightness of described second seal is better than the air-tightness of described first seal.

7, cabinet according to claim 6 is characterized in that: described first seal, second seal are sealing ring or sealing gasket.

8, cabinet according to claim 6 is characterized in that: described first seal and second seal interconnect.