CN106155185B

CN106155185B - Underwater special computer and sealing device thereof

Info

Publication number: CN106155185B
Application number: CN201510152884.7A
Authority: CN
Inventors: 邹建红; 陈志列
Original assignee: EVOC Intelligent Technology Co Ltd
Current assignee: Yanxiang Smart Iot Technology Co ltd
Priority date: 2015-04-01
Filing date: 2015-04-01
Publication date: 2021-05-18
Anticipated expiration: 2035-04-01
Also published as: CN106155185A

Abstract

A sealing device comprises a base and an upper cover, wherein the upper cover is arranged on the base, a plurality of circles of accommodating grooves are formed in the end face of the top end of the side wall of the base, the accommodating grooves are in a closed ring shape, conductive rubber is arranged in the accommodating grooves and filled in the accommodating grooves, the height of the conductive rubber is larger than the depth of the accommodating grooves, and the upper cover compresses the conductive rubber and is in sealing connection with the base. The height of the conductive rubber of the sealing device is larger than the depth of the containing groove, when the upper cover is tightly connected with the base, the upper cover compresses the conductive rubber, and the conductive rubber seals the joint of the upper cover and the base. The accommodating grooves are multiple, so that the sealing performance of the sealing device can be protected multiply, and the protection performance of the computer is improved. Still provide a special computer under water who contains above-mentioned sealing device.

Description

Underwater special computer and sealing device thereof

Technical Field

The invention relates to electronic equipment, in particular to an underwater special computer and a sealing device thereof.

Background

With the continuous development and popularization of computer technology, the requirements on the severe environment resistance of special computers are higher and higher, and the requirements on excellent sealing property, anti-seismic property and heat dissipation property are high, so that the computer is suitable for the application of national defense science and technology, industrial fields, marine exploration and other environments. The underwater special computer is one of special computers, needs to work underwater for a long time, requires high waterproof sealing performance, heat dissipation performance and earthquake resistance, and is a navigation product of high and new technology industry by virtue of high reliable protection design and advanced manufacturability. The design of the underwater special computer IP (internet protocol) Protection and the design of electromagnetic compatibility (EMC) are always difficult and important in industrial design, and particularly, for the design of deep water Protection, the reliability of the original Protection design is reduced as the water pressure is increased along with the increase of the diving depth, so that the Protection design and the manufacturing cost are correspondingly increased, and the Protection performance is correspondingly reduced.

Disclosure of Invention

Based on this, it is necessary to provide an underwater special computer with higher protection performance and a sealing device thereof.

A sealing device comprises a base and an upper cover, wherein the upper cover is arranged on the base, a plurality of rings of accommodating grooves are formed in the end face of the top end of the side wall of the base, the accommodating grooves are in a closed ring shape, conductive rubber is arranged in the accommodating grooves and filled in the accommodating grooves, the height of the conductive rubber is larger than the depth of the accommodating grooves, and the upper cover compresses the conductive rubber and is in sealing connection with the base.

In one embodiment, the base and the upper cover are fastened and connected through screws, screw holes are formed in the end face of the top end of the side wall of the base, and the screw holes are arranged close to the outer side of the base.

In one embodiment, the conductive rubber includes a conductive surface and a silica gel surface, the conductive surface is disposed toward an inner side of the receiving groove, and the silica gel surface is disposed near an outer side of the receiving groove.

In one embodiment, the ratio of the height of the conductive rubber to the depth of the accommodating groove is greater than or equal to 4:3, 2 or less: 1.

in one embodiment, the conductive rubber is strip-shaped, the length of the conductive rubber is equal to the circumference of the accommodating groove, two ends of the conductive rubber are connected to form a closed conductive rubber ring, and two ends of the conductive rubber are connected and closed through silica gel adhesion.

In one embodiment, the closed part of the conductive rubber forms a joint, and a plurality of joints are staggered with each other.

In one embodiment, the cross section of the conductive rubber is square, the side length of the square is 2mm, the width of the accommodating groove is 2mm, and the depth of the accommodating groove is 1.35 mm.

In one embodiment, the receiving groove has two circles.

An underwater special computer comprises the sealing device and a mainboard, wherein an accommodating cavity is formed by enclosing the upper cover and the base, and the mainboard is accommodated in the accommodating cavity.

In one embodiment, the heat-conducting module further comprises a heat-conducting column, wherein the heat-conducting column is arranged on the heating source of the mainboard, one end of the heat-conducting column is in effective contact with the heating source of the mainboard, and the other end of the heat-conducting column is in effective contact with the upper cover.

The underwater special computer comprising the sealing device is provided with a plurality of circles of accommodating grooves on a base, and conductive rubber is filled in the accommodating grooves. And the height of the conductive rubber is greater than the depth of the containing groove, when the upper cover is tightly connected with the base, the upper cover compresses the conductive rubber, and the conductive rubber seals the connection part of the upper cover and the base. The accommodating grooves are multiple, so that the sealing performance of the sealing device can be protected multiply, and the protection performance of the underwater special computer is improved.

Drawings

Fig. 1 is a perspective view of an underwater special computer of the present embodiment;

FIG. 2 is a cross-sectional view of the subsea specialty computer shown in FIG. 1;

FIG. 3 is a perspective view of the base of the underwater special purpose computer shown in FIG. 1;

FIG. 4 is a cross-sectional view of the base shown in FIG. 3;

fig. 5 is a top view of the base shown in fig. 3.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the underwater special computer 100 of the present embodiment includes a sealing device 110 and a main board 120.

The motherboard 120 includes a processor (not shown) and a memory (not shown). The main board 120 is a low power consumption and wide temperature range material. The main board 120 is also provided with an external input/output interface 123. The external input/output interface 123 employs a highly hermetic circular electrical connector.

The sealing device 110 is formed by machining aluminum alloy. The surface of the aluminum alloy is subjected to black oxidation treatment. The sealing device 110 includes a base 130 and an upper cover 140. The upper cover 140 is disposed on the base 130. The top cover 140 and the base 130 form a receiving cavity 101, and the main board 120 is received in the receiving cavity 101.

Referring to fig. 3 and 4, the top end surface 135 of the sidewall of the base 130 is formed with a plurality of circles of receiving slots 131. The receiving groove 131 is a closed ring shape and has a shape of a Chinese character 'hui'. Referring to fig. 2 and 3, a conductive rubber 150 is disposed in the receiving groove 131. The conductive rubber 150 fills the receiving groove 131. The height of the conductive rubber 150 is greater than the depth of the receiving groove 131. The upper cap 140 compresses the conductive rubber 150 and is hermetically connected to the base 130.

Specifically, in the present embodiment, referring to fig. 3, the accommodating groove 131 has two circles. The receiving groove 131 close to the receiving cavity 101 is an inner receiving groove 132, and the receiving groove 131 far from the receiving cavity 101 is an outer receiving groove 133. Further, the number of the receiving grooves 131 is determined according to the width of the top end surface 135 of the sidewall of the base 130, including but not limited to two turns. According to the width of the top end face 135, two circles of the accommodating grooves 131 are arranged on the original top end face 135, the width of the top end face 135 does not need to be widened, the effect of multiple protection can be achieved, and the manufacturing cost of the base 130 is saved.

Referring to fig. 1, the base 130 and the upper cover 140 are fastened by screws 160. Referring to fig. 3 and 4, a screw hole 134 is formed on a top end surface 135 of a side wall of the base 130, and the screw hole 134 is disposed near an outer side of the top end surface 135. The side of the end face 135 close to the receiving cavity 101 is the inner side of the end face 135, and the side of the end face 135 far from the receiving cavity 101 is the outer side of the end face 135. The screw 160 fastens the base 130 and the upper cover 140 from the outside of the top end surface 135, preventing the conductive rubber 150 from being directly exposed to the external environment, improving the service life of the conductive rubber 150, and improving the protection performance of the sealing device 110.

The conductive rubber 150 includes a conductive surface (not shown) and a silicone surface (not shown). The conductive surface is disposed toward the inner side of the receiving groove 131, and the silicone surface is disposed near the outer side of the receiving groove 131. The inner side of the receiving groove 131 is a side surface of the receiving groove 131 close to the receiving cavity 101. The outer side of the accommodating groove 131 is a side surface of the accommodating groove 131 far from the accommodating cavity 101. That is, the conductive surface is provided toward the side surface of the housing groove 131 close to the housing cavity 101. The silicone surface is disposed close to the side of the accommodating groove 131 away from the accommodating cavity 101. The silica gel face has waterproof function, and the silica gel face can be better stop external rivers from conductive rubber 150 infiltration, improves conductive rubber 150's leakproofness. Moreover, the silica gel surface can prevent water from corroding the conductive rubber, and the service life of the conductive rubber is prolonged.

The mounting dimensions of the conductive rubber 150 need to be strictly controlled to ensure an effective and reliable sealing effect. That is, if the receiving groove 131 is designed to be slightly shallow, the compression amount of the conductive rubber 150 is increased, which may cause the conductive rubber 150 to crack and cause the sealing failure; the receiving groove 131 is designed to be deeper, so that the conductive rubber 150 is not compressed enough, and cannot effectively prevent water. Specifically, in the present embodiment, the ratio of the height of the conductive rubber 150 to the depth of the housing groove 131 is not less than 4:3, 2 or less: 1. when the top cover 140 is tightly connected to the base 130, the conductive rubber 150 is elastically deformed by pressure. The elastic deformation is within the elastic limit, and the conductive rubber 150 is not crushed.

The conductive rubber 150 has a strip shape. The length of the conductive rubber 150 is equal to the circumference of the receiving groove 131 for receiving the conductive rubber 150, and both ends of the conductive rubber 150 are connected to form a closed conductive rubber ring. The two ends of the conductive rubber 150 are connected by silicone to form a joint (not shown).

Since the commercially available conductive rubber 150 is generally in a straight shape, it is not a separate closed loop body, and the length thereof can be arbitrarily cut according to the size of the receiving groove 131. Therefore, the conductive rubber 150 is used for filling the accommodating groove 131, so that a special sealing ring does not need to be manufactured additionally, the manufacturing process is saved, and the cost is reduced. Moreover, since the same conductive rubber 150 can be applied to the accommodating grooves 131 having different circumferential lengths but the same cross-sectional shape, the size of the conductive rubber 150 does not need to be changed for the accommodating grooves 131 having different circumferential lengths, thereby saving cost.

Therefore, when the conductive rubber 150 is installed, the joint needs to be adhered and closed by organic silicon gel. The effective contact area between the conductive rubber 150 and the upper cover 140 can be increased by installing the double conductive rubber rings, which is beneficial to the electromagnetic compatibility protection of the underwater special computer. Referring to fig. 3 and 5, the conductive rubber ring disposed in the inner receiving groove 131 is an inner conductive rubber ring 151, and the conductive rubber ring disposed in the outer receiving groove 131 is an outer conductive rubber ring 152.

Meanwhile, the joints of the inner conductive rubber ring 151 and the outer conductive rubber ring 152 are installed in a staggered manner. When the joints of the two conductive rubber rings are damaged at the same time, if the joints of the two conductive rubber rings are arranged oppositely, external air flow or water flow can directly enter the joint of the inner conductive rubber ring 151 from the joint of the outer conductive rubber ring 152. On the contrary, if the joints of the two guide rubber rings are arranged alternately, when external air flow or water flow penetrates from the joints of the outer conductive rubber ring 152, and the water flow or the air flow needs to bypass a certain distance to reach the joints of the inner conductive rubber ring 151, then the air flow can enter the receiving cavity 101 from the joints. Therefore, the joints of the two conductive rubber rings are arranged in an interlaced mode, the influence of joint damage on the sealing performance of the computer can be temporarily relieved, and time is won for maintenance.

Specifically, in the present embodiment, the cross section of the conductive rubber 150 is square, the side length of the square is 2mm, the width of the receiving groove 131 is 2mm, and the depth of the receiving groove 131 is 1.35 mm. The conductive rubber 150 is compressed by the upper cover 140, and the conductive rubber 150 seals the upper cover 140 and the base 130. The conductive rubber 150 is compressed by 0.65mm, the conductive rubber 150 is not damaged, and good sealing performance between the upper cover 140 and the base 130 is ensured.

Referring to fig. 2, 3 and 4, in the present embodiment, the underwater special computer 100 further includes a heat-conducting pillar 170, the heat-conducting pillar 170 is disposed on the heat source of the motherboard 120, one end of the heat-conducting pillar 170 is in effective contact with the heat source of the motherboard 120, and the other end of the heat-conducting pillar 170 is in effective contact with the upper cover 140. The heat generated by the motherboard 120 is conducted to the top cover 140 through the heat-conducting pillars 170, and finally dissipated through the top cover 140. The underwater special computer 100 is designed to be fully sealed without a fan, and the sealing device 110 has the functions of conduction and heat dissipation. In order to increase the heat dissipation speed, the top cover 140 and the base 130 are provided with heat dissipation fins 180 on the outer sidewalls thereof. The heat dissipation fins 180 can increase the heat dissipation area of the upper cover 140 and the base 130, thereby improving the heat dissipation effect of the sealing device 110.

The underwater special computer 100 including the sealing device 110 has a base 130 formed with a plurality of rings of receiving grooves 131, and the receiving grooves 131 are filled with conductive rubber 150. And, the height of the conductive rubber 150 is greater than the depth of the receiving groove 131, when the upper cover 140 is tightly connected with the base 130, the upper cover 140 compresses the conductive rubber 150, and the conductive rubber 150 seals the connection position of the upper cover 140 and the base 130. The plurality of accommodating grooves 131 can protect the sealing performance of the sealing device 110 in multiple ways, and improve the protection performance of the underwater special computer 100.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The underwater special computer is characterized by comprising a sealing device and a mainboard, wherein the sealing device comprises a base and an upper cover, the upper cover is arranged on the base, a plurality of circles of accommodating grooves are formed in the end face of the top end of the side wall of the base, the accommodating grooves are arranged at intervals and are mutually independent, the accommodating grooves are in a closed ring shape, conductive rubber is arranged in the accommodating grooves and fills the accommodating grooves, the conductive rubber is mutually independent, the conductive rubber comprises a conductive surface and a silica gel surface, the conductive surface faces the inner side of the accommodating grooves, the silica gel surface is arranged close to the outer side of the accommodating grooves, the height of the conductive rubber is larger than the depth of the accommodating grooves, the ratio of the height of the conductive rubber to the depth of the accommodating grooves is larger than or equal to 4:3 and smaller than or equal to 2:1, the part of the surface of the upper cover, which is opposite to the end face of the top end of the side wall of the base, is a plane, the upper cover compresses the conductive rubber and is connected with the base in a sealing mode, two ends of the conductive rubber are connected to form a closed conductive rubber ring, joints are formed at the closed positions of two end portions of the conductive rubber, the joints are mutually staggered, an accommodating cavity is formed by the upper cover and the base in a surrounding mode, and the mainboard is accommodated in the accommodating cavity.

2. The underwater special computer as claimed in claim 1, wherein the base is fastened and connected with the upper cover through screws, a screw hole is formed in an end face of the top end of the side wall of the base, and the screw hole is arranged close to the outer side of the base.

3. The underwater special computer as claimed in claim 1, wherein the compression amount of the conductive rubber is 0.65 mm.

4. The underwater special computer as claimed in claim 1, wherein the base and the upper cover are made of aluminum alloy, and surfaces of the base and the upper cover are subjected to black oxidation treatment.

5. The underwater special computer as claimed in claim 1, wherein the conductive rubber is strip-shaped, the length of the conductive rubber is equal to the circumference of the accommodating groove, and two ends of the conductive rubber are connected and closed through silica gel adhesion.

6. The underwater special computer as claimed in claim 1, wherein the cross section of the conductive rubber is square, the side length of the square is 2mm, the width of the accommodating groove is 2mm, and the depth of the accommodating groove is 1.35 mm.

7. The underwater special computer of claim 1, wherein the receiving groove is two turns.

8. The underwater special computer as claimed in claim 1, wherein the joints of the conductive rubber are bonded and closed by silicone rubber.

9. The underwater special computer as claimed in claim 1, further comprising a heat-conducting pillar, wherein the heat-conducting pillar is disposed on the heat source of the main board, one end of the heat-conducting pillar is in effective contact with the heat source of the main board, and the other end of the heat-conducting pillar is in effective contact with the upper cover.