CN114641174A - Sealing element and equipment installation device adopting same - Google Patents
Sealing element and equipment installation device adopting same Download PDFInfo
- Publication number
- CN114641174A CN114641174A CN202210181622.3A CN202210181622A CN114641174A CN 114641174 A CN114641174 A CN 114641174A CN 202210181622 A CN202210181622 A CN 202210181622A CN 114641174 A CN114641174 A CN 114641174A
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- ventilation
- equipment
- electronic equipment
- sealing element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 238000009434 installation Methods 0.000 title claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0213—Venting apertures; Constructional details thereof
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
- H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention relates to a sealing element and an equipment installation device adopting the same, wherein the equipment installation device comprises an installation frame, the sealing element, a fastening element and a ventilation adjusting plate, a ventilation interface is arranged on a bottom plate of the installation frame, the ventilation adjusting plate is installed below the ventilation interface on the bottom plate through the fastening element, an annular sealing element is arranged between the ventilation adjusting plate and the bottom plate, a protruding part extending upwards in an inclined mode is arranged on the inner edge of the sealing element, the protruding part is located in the ventilation interface and protrudes out of the upper end face of the bottom plate, a compression gap is defined by the protruding part and the cross section of the bottom plate in the thickness direction, the compression gap completely accommodates the protruding part when the sealing element is pressed by electronic equipment, and the protruding part is in elastic contact fit with the bottom of the electronic equipment to achieve sealing. The invention realizes better ventilation sealing performance between the bottom of the electronic equipment and the equipment installation device, effectively reduces the friction force when the electronic equipment is installed, meets the requirement of inserting and pulling the equipment in place, and improves the comprehensive maintainability and the signal transmission reliability of the electronic equipment.
Description
Technical Field
The invention belongs to the technical field of aerospace electrical equipment, and particularly relates to an electronic equipment sealing element and an equipment installation device adopting the sealing element.
Background
With the continuous upgrading and upgrading of weaponry, the functions of various electronic devices are gradually increased and are developed towards miniaturization, modularization and integration, the power and heat consumption of the electronic devices are also increased, the traditional natural heat dissipation cooling mode does not meet the heat dissipation requirements, heat dissipation and cooling are required to be carried out through a forced ventilation cooling mode, and the up-and-down ventilation of the electronic devices is one of the heat dissipation design modes of the electronic devices. In the specific implementation process, in order to realize that electronic equipment is wholly dismantled and quick replacement, electronic equipment installation device's rear side is equipped with the electric connector, and the front portion is equipped with locking device, and electronic equipment passes through the cooperation of the electric connector socket that the rear portion was established and the electric connector plug on the installation device, realizes introducing, the electric transmission of electronic equipment to the cooperation realizes jointly that electronic equipment's locking is fixed through its anterior locking device, and the bottom realizes electronic equipment's heat dissipation cooling through setting up the environmental control interface. However, in engineering applications, the sealing performance and the comprehensive maintainability of the existing equipment installation device need to be improved in consideration of the control requirement of the leakage amount of the ventilation system.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the equipment installation device, which realizes a better ventilation sealing effect between the bottom of the electronic equipment and the equipment installation device, can also effectively reduce the bottom friction force during the installation of the electronic equipment, meets the requirement of plugging and unplugging the equipment in place, and improves the comprehensive maintainability and the signal transmission reliability of the equipment.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme. The equipment installation device provided by the invention comprises an installation frame, a sealing element, a fastening element and a ventilation adjusting plate, wherein a ventilation interface is arranged on a bottom plate of the installation frame, the ventilation adjusting plate is installed below the ventilation interface on the bottom plate through the fastening element, the annular sealing element is arranged between the ventilation adjusting plate and the bottom plate, the inner edge of the sealing element is provided with a protruding part which extends upwards in an inclined mode, the protruding part is positioned in the ventilation interface, the bulge part protrudes out of the upper end face of the bottom plate, the bulge part and the section of the bottom plate in the thickness direction form a compression gap in a surrounding mode, the compression gap is used for completely accommodating the bulge part when the sealing element is pressed by electronic equipment, the bulge part is in elastic contact fit with the bottom of the electronic equipment to achieve sealing, through reasonable sealing member structural design and mounted position design, can realize sealed effect, can realize electronic equipment plug drag reduction effect again.
Further, the sealing element is a sealing rubber ring made of rubber materials.
Furthermore, the rear end of the mounting rack is provided with a mounting plate vertically arranged on the bottom plate, a mounting interface is arranged on the mounting plate and used for mounting a connector, and the rear end of the electronic equipment is provided with an adaptive connector which is inserted with the connector after the electronic equipment is mounted in place.
Furthermore, the both sides of mounting bracket are provided with the curb plate relatively, and the lateral part of both sides and bottom plate enclose into the guide rail portion that supplies electronic equipment along the fore-and-aft direction plug.
Furthermore, a gasket is arranged between the sealing element and the bottom plate of the mounting frame, and the gasket is an annular gasket matched with the shape of the sealing element.
Furthermore, the fastener includes screw and nut, and the screw passes the bottom plate of mounting bracket, ventilation regulating plate back and nut lock cooperation, can dismantle fixedly to the ventilation regulating plate.
A seal as described in any one of the above apparatus installation.
By means of the technical scheme, the invention has the beneficial effects that: in the process of oppositely inserting the case of the electronic equipment and the mounting rack, the top of the sealing element is compressed at the bottom of the case of the electronic equipment, so that the bulge of the sealing element can be completely compressed into the reserved compression gap, the sealing element is well contacted with the bottom of the case to achieve a sealing effect, the case for lifting the electronic equipment and the inserting and pulling friction force of the electronic equipment are prevented from being increased, the oppositely inserting and signal exchanging of the connector in the equipment are ensured, and the signal transmission stability is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are specifically described below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the installation and cooperation of the equipment installation device and the electronic equipment.
Fig. 2 is a schematic cross-sectional side view of fig. 1.
Fig. 3 is an exploded view of the equipment installation of the present invention.
Fig. 4 is a perspective view of the seal of the present invention.
Fig. 5 is a schematic cross-sectional view of the sealing member of the present invention.
Fig. 6 is a schematic diagram of the use fit relationship after the seal is installed.
Fig. 7A to 7B are schematic views of the state before and after the seal is compressed, respectively.
FIG. 8 is a graphical representation of four factors affecting the cross-section of a seal in an example embodiment of the invention.
Description of reference numerals:
1-an electronic device; 2-a mounting rack; 21-a bottom plate; 22-side plate; 23-mounting a plate; 211-a ventilation interface; 3-a seal; 41-screw; 42-a nut; 5-ventilation adjusting plate; 6-locking means; 7-a connector; 8-an adapter connector; 9-a gasket;
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments.
An embodiment of an equipment installation device:
referring to fig. 1 to 8, an apparatus mounting device is mainly used for implementing plug-in mounting positioning and ventilation cooling of an electronic apparatus 1 in the aerospace field, and includes a mounting frame 2, a sealing member 3, a fastening member and a ventilation adjusting plate 5, where the mounting frame 2 includes a bottom plate 21, side plates 22 erected on two sides of the bottom plate and a mounting plate 23 erected at the rear end of the bottom plate, the side plates 22 and the bottom plate 21 on two sides enclose a guide rail portion for guiding the electronic apparatus to slide and plug-in along the front-rear direction, and after the electronic apparatus 1 is mounted in place, a locking device 6 arranged at the front end of the bottom plate is matched with the electronic apparatus to fix the electronic apparatus, and the locking device 6 is the prior art and is not described herein. The mounting plate 2 is provided with a mounting interface for mounting a connector 7, and the rear end of the electronic equipment is provided with an adaptive connector 8 which is inserted with the connector after the electronic equipment is mounted in place, so as to realize electrical transmission. The bottom plate 21 is provided with a ventilation interface 211, and the arrangement position and the size of the ventilation interface are matched with a ventilation opening at the bottom of the case of the electronic equipment, so as to realize ventilation and cooling of the electronic equipment.
The ventilation adjusting plate 5 is arranged below a ventilation interface of the bottom plate through a fastening piece, the ventilation adjusting plate is a pore plate, and when the air quantity needs to be adjusted, only a corresponding number of pores on the ventilation adjusting plate need to be plugged through plugging plugs; in this embodiment, the fastening member includes a screw 41 and a nut 42, and the screw passes through the bottom plate 21 of the mounting frame and a corresponding mounting hole on the ventilation adjusting plate 5 and then is in locking fit with the nut 42 to detachably fix the ventilation adjusting plate.
The sealing element 3 is arranged between the ventilation adjusting plate 5 and the bottom plate 21 of the mounting frame 2, and the sealing element can prevent air leakage at the position between the ventilation adjusting plate and the mounting frame; the sealing element is a sealing rubber ring made of annular rubber materials, the sealing rubber ring can be formed by molding HK6140 or other materials, the size of the ring is matched with the area of the air vent of the electronic equipment, the sealing rubber ring has a compressible sealing effect, and through reasonable structural design, the sealing rubber ring can realize the sealing of the air vent of the electronic equipment and the equipment installation device and can also realize the plugging and pulling resistance reduction effect of the electronic equipment. Specifically, referring to fig. 6, the screw also penetrates through the sealing member and then cooperates with the nut to reinforce the sealing member, the inner edge of the sealing member 3 is provided with a protrusion 31 extending obliquely upward, and the oblique direction of the protrusion 31 is outward; the bulge 31 of the sealing element is positioned in the ventilation interface and protrudes out of the upper end face of the bottom plate 21 in the height direction, a compression gap 32 is formed by the bulge and the cross section of the bottom plate in the thickness direction, the compression gap is used for completely accommodating the bulge 31 when the sealing element is subjected to the pressure of the electronic equipment, the cross section area of the bulge part of the bulge higher than the bottom plate is S1, and the cross section area of the compression gap is S2, so that S2 is greater than S1, even if the bulge cannot heighten the electronic equipment in a use state, the bottom plate of the mounting rack still serves as the bearing surface of the electronic equipment.
In the process of inserting the electronic equipment and the mounting frame into each other, the top of the sealing element is compressed through the bottom of the case of the electronic equipment, so that the protruding part is completely compressed into the reserved compression gap. Meanwhile, under the action of the elastic reset force of the lug boss, the lug boss keeps good elastic contact force with the bottom of the case of the electronic equipment so as to achieve good elastic contact sealing effect. If the size of the bulge of the sealing rubber ring is large or the reserved compression gap is small, the bulge cannot completely enter the reserved compression gap after the sealing rubber ring is compressed, the sealing rubber ring can lift the electronic equipment, so that the plugging friction of the electronic equipment is increased, and the equipment plugging and interchange are influenced; if the position of the connector and the position of the adaptive connector in the height direction are staggered, the mutual insertion of the electronic equipment and the connector on the equipment installation device is not facilitated, and even if the mutual insertion is forcibly completed, hidden danger can be brought to the stability of signal transmission.
In this embodiment, in order to realize normal insertion and effective sealing of the electronic device, the following conditions need to be satisfied:
1. the sectional area S2 of the compression gap is greater than the sectional area S1 of the sealing element protruding from the bottom plate, and the space filling state after the compression of the sealing element is evaluated and determined by performing contact analysis on the existing model by using finite element software, and specifically, the schematic shape before and after the compression of the sealing rubber ring shown in fig. 7 and 8 can be referred to.
2. The height H of the sealing rubber ring protruding out of the base plate of the mounting frame is less than the maximum allowable deviation H of the corresponding shell of the connector and the adaptive connector, and the maximum allowable deviation H is determined by the assembling tolerance and the machining tolerance of the connector and the adaptive connector.
3. With reference to fig. 8, under the condition of guaranteeing condition 1 and condition 2, the friction force should be controlled to guarantee the sealing performance and the installation insertion and extraction force, mainly by controlling four main factors affecting the section of the sealing rubber ring: height h of the projection mount base plate, thickness d of the projection, inclination Z of the projection, and radius R at the intersection of the projection and the seal base. The specific method for selecting the above four factors in this embodiment is as follows:
1) obtaining a frictional force F between an electronic device and a chassisfCalculating the formula: ffN × μ, wherein: n is the positive pressure between the electronic device and the mounting rack, and mu is the friction coefficient;
2) selecting the height h of the bottom plate of the protruding mounting frame by the method of the condition 2;
3) the selection of the fillet R is determined according to the contact positive pressure finite element analysis trend of the contact surface under the condition that the compression height is h, the size of the fillet R obtained by analysis is approximately linearly changed with the positive pressure, namely the size of the fillet and the friction force are also linearly changed, so that the smaller the fillet is, the better the fillet is;
4) the inclination angle Z is determined according to the contact positive pressure finite element analysis trend of the contact surface under the condition of the compression height h, the obtained positive pressure is reduced along with the increase of the inclination angle, the positive pressure is changed into a block along with the reduction of the inclination angle of the convex part of the sealing rubber ring before a certain inflection angle value, the positive pressure is slowly changed along with the reduction of the inclination angle of the convex part after the certain inflection angle value is exceeded, and the inflection angle value is the design value. In this embodiment, the inclination angle Z may be adaptively selected within an acute angle range.
5) The thickness d of the protruding portion of the sealing rubber ring is selected, finite element contact analysis is carried out on the sealing rubber rings with different thicknesses, the finite element analysis trend is determined according to the contact positive pressure of the contact surface under the condition of the compression height h, the thickness of the protruding portion exceeding a certain inflection point value can be obtained, the positive pressure is raised exponentially, namely, the friction force is also raised exponentially, and the inflection point value can be used as a design value.
The specific values of the parameters are determined by analyzing and calculating the sizes of the parts in combination with the parameters, so that the selection of the parameters can be selected within a certain range without departing from the technical scheme of the invention, and the specific values of the parameters are not limited by the invention.
Further, can also be equipped with gasket 9 between sealing member and mounting bracket, the gasket be with the annular gasket of ventilation interface and sealing member shape looks adaptation, prevent mounting bracket and sealing member direct contact, avoid the sealing member probably to lead to difficult dismantlement with the mounting bracket adhesion when the temperature is higher. Gasket 9 sets up a plurality of corresponding mounting holes that supply the screw to pass along its circumference, in this embodiment promptly, all sets up the mounting hole that corresponds on bottom plate, gasket, sealing member, the ventilation regulating plate to the stable assembly is realized to cooperation screw, nut.
An embodiment of a seal:
the sealing element is the sealing element described in the above embodiment of the equipment installation device, and can be applied to the equipment installation device to achieve the purposes of achieving good contact sealing performance and improving comprehensive maintainability and signal transmission reliability of equipment, and the specific structure is not described herein again.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art can make any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the present invention without departing from the scope of the present invention, and still fall within the scope of the present invention.
Claims (7)
1. The equipment installation device comprises an installation frame, a sealing element, a fastener and a ventilation adjusting plate, wherein a ventilation interface is arranged on a bottom plate of the installation frame, and the equipment installation device is characterized in that: the ventilation regulating plate is installed below a ventilation interface on the bottom plate through a fastener, an annular sealing piece is arranged between the ventilation regulating plate and the bottom plate, the inner edge of the sealing piece is provided with a protrusion part which extends upwards in an inclined mode, the protrusion part is located in the ventilation interface and protrudes out of the upper end face of the bottom plate, the protrusion part and the cross section of the bottom plate in the thickness direction are enclosed to form a compression gap, the compression gap is used for completely accommodating the protrusion part when the sealing piece is under the pressure of electronic equipment, and the protrusion part is matched with the bottom of the electronic equipment in an elastic contact mode to achieve sealing.
2. The equipment mounting device of claim 1, wherein: the sealing element is a sealing rubber ring made of rubber material.
3. The equipment mounting device of claim 1, wherein: the rear end of the mounting rack is provided with a mounting plate vertically arranged on the bottom plate, a mounting interface is arranged on the mounting plate and used for mounting a connector, and an adaptive connector which is inserted with the connector after the electronic equipment is mounted in place is mounted at the rear end of the electronic equipment.
4. The equipment mounting device of claim 3, wherein: the both sides of mounting bracket are provided with the curb plate relatively, and the lateral part of both sides encloses into the guide rail portion that supplies electronic equipment along the plug of fore-and-aft direction with the bottom plate.
5. The equipment mounting device of claim 1, wherein: and a gasket is arranged between the sealing element and the bottom plate of the mounting frame, and the gasket is an annular gasket matched with the shape of the sealing element.
6. The equipment mounting device of claim 1, wherein: the fastener comprises a screw and a nut, the screw penetrates through the bottom plate of the mounting frame and the ventilation adjusting plate and then is in locking fit with the nut, and the ventilation adjusting plate is detachably fixed.
7. A seal, characterized by: the seal is as described in any one of the apparatus installation devices of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210181622.3A CN114641174A (en) | 2022-02-25 | 2022-02-25 | Sealing element and equipment installation device adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210181622.3A CN114641174A (en) | 2022-02-25 | 2022-02-25 | Sealing element and equipment installation device adopting same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114641174A true CN114641174A (en) | 2022-06-17 |
Family
ID=81948382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210181622.3A Pending CN114641174A (en) | 2022-02-25 | 2022-02-25 | Sealing element and equipment installation device adopting same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114641174A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0547619U (en) * | 1991-12-03 | 1993-06-25 | 株式会社荒井製作所 | Sealing device |
| KR20000022481A (en) * | 1996-07-02 | 2000-04-25 | 존 웬트워드 버크넬 | Seals for hydraulic assemblies |
| JP2002364788A (en) * | 2001-06-06 | 2002-12-18 | Dainippon Plastics Co Ltd | Packing ring |
| US20040012157A1 (en) * | 2002-07-19 | 2004-01-22 | Mitsubishi Cable Industries, Ltd. | Metal seal and attachment method for the same and tight-seal construction |
| CN104302128A (en) * | 2014-10-15 | 2015-01-21 | 中航光电科技股份有限公司 | Rear plug type case installation rack |
| CN107869617A (en) * | 2017-12-07 | 2018-04-03 | 程宇婷 | A kind of biconvex sealing ring cushion rubber and its sealing principle |
| CN109667934A (en) * | 2018-12-26 | 2019-04-23 | 新兴铸管股份有限公司 | A kind of pipe joint sealing device and preparation method |
| JP2020183811A (en) * | 2019-05-02 | 2020-11-12 | プレス−シール コーポレーション | Pipe joint seal for polymer piping |
| CN112117588A (en) * | 2020-09-29 | 2020-12-22 | 宣城立讯精密工业有限公司 | Sealing ring and connector |
| CN214505826U (en) * | 2021-05-17 | 2021-10-26 | 科都电气股份有限公司 | Improved protection socket |
| CN113891621A (en) * | 2021-09-27 | 2022-01-04 | 中国船舶重工集团公司第七一五研究所 | Utilize phase transition technique reinforcing heat transfer's quick maintenance ATR machine case |
-
2022
- 2022-02-25 CN CN202210181622.3A patent/CN114641174A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0547619U (en) * | 1991-12-03 | 1993-06-25 | 株式会社荒井製作所 | Sealing device |
| KR20000022481A (en) * | 1996-07-02 | 2000-04-25 | 존 웬트워드 버크넬 | Seals for hydraulic assemblies |
| JP2002364788A (en) * | 2001-06-06 | 2002-12-18 | Dainippon Plastics Co Ltd | Packing ring |
| US20040012157A1 (en) * | 2002-07-19 | 2004-01-22 | Mitsubishi Cable Industries, Ltd. | Metal seal and attachment method for the same and tight-seal construction |
| CN104302128A (en) * | 2014-10-15 | 2015-01-21 | 中航光电科技股份有限公司 | Rear plug type case installation rack |
| CN107869617A (en) * | 2017-12-07 | 2018-04-03 | 程宇婷 | A kind of biconvex sealing ring cushion rubber and its sealing principle |
| CN109667934A (en) * | 2018-12-26 | 2019-04-23 | 新兴铸管股份有限公司 | A kind of pipe joint sealing device and preparation method |
| JP2020183811A (en) * | 2019-05-02 | 2020-11-12 | プレス−シール コーポレーション | Pipe joint seal for polymer piping |
| CN112117588A (en) * | 2020-09-29 | 2020-12-22 | 宣城立讯精密工业有限公司 | Sealing ring and connector |
| CN214505826U (en) * | 2021-05-17 | 2021-10-26 | 科都电气股份有限公司 | Improved protection socket |
| CN113891621A (en) * | 2021-09-27 | 2022-01-04 | 中国船舶重工集团公司第七一五研究所 | Utilize phase transition technique reinforcing heat transfer's quick maintenance ATR machine case |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114641174A (en) | Sealing element and equipment installation device adopting same | |
| CN217879743U (en) | Heat radiation structure of optical module | |
| CN211745080U (en) | Radiator with elastic heat conduction block | |
| CN213026646U (en) | Socket with heat dissipation function | |
| CN207380604U (en) | A kind of dustproof computer display screen component | |
| CN221010550U (en) | High-power circuit board heat conduction and dissipation device in sealed chassis | |
| CN216598257U (en) | Locking socket that takes off of computer machine case | |
| CN220733182U (en) | Metal casing and DCDC power converter | |
| CN213503836U (en) | High-sealing waterproof connector structure | |
| CN213242104U (en) | Brake resistance box | |
| CN216391271U (en) | Distributed LoRa network audio and video control terminal | |
| CN217589264U (en) | Battery pack | |
| CN114745879A (en) | Equipment fixing device for marine environment resistance | |
| CN218587482U (en) | Heat exchange unit switch board of high-efficient protection | |
| CN211720311U (en) | A charger | |
| CN202998763U (en) | An analog circuit box-type plugging member system structure | |
| CN219068605U (en) | Control panel with good heat dissipation | |
| CN215070692U (en) | Low-temperature integratable connector | |
| CN221176762U (en) | Blocking piece and vehicle-mounted power supply | |
| CN216488747U (en) | Power supply socket with dustproof function | |
| CN218042008U (en) | Intelligent controller for operation and maintenance reclosing | |
| CN219181803U (en) | Portable electronic product shell structure with hanging rope for preventing disassembly | |
| CN213092820U (en) | Screw M2 NVMESATA hard disk box is exempted from to take fan | |
| CN216672061U (en) | Anti-loose mounting structure of terminal pin of 5G backplane connector | |
| CN221080443U (en) | Electronic connector with automatic dustproof structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |