CN205583250U - Electric connector - Google Patents

Electric connector Download PDF

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Publication number
CN205583250U
CN205583250U CN201620356236.3U CN201620356236U CN205583250U CN 205583250 U CN205583250 U CN 205583250U CN 201620356236 U CN201620356236 U CN 201620356236U CN 205583250 U CN205583250 U CN 205583250U
Authority
CN
China
Prior art keywords
plug
conical surface
hoop
sealing ring
electrical cnnector
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.)
Expired - Fee Related
Application number
CN201620356236.3U
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Chinese (zh)
Inventor
王林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Latitude Power Technology Co Ltd
Original Assignee
Nanjing Latitude Power Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Latitude Power Technology Co Ltd filed Critical Nanjing Latitude Power Technology Co Ltd
Priority to CN201620356236.3U priority Critical patent/CN205583250U/en
Application granted granted Critical
Publication of CN205583250U publication Critical patent/CN205583250U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an electric connector, its technical scheme main points are including plug and socket, be equipped with the through -hole that supplies the cable to pass in the plug, the plug is kept away from socket end and is equipped with the cable and compresses tightly the hoop, it is equipped with sealing washer no. 1 to compress tightly between hoop and the plug, a sealing washer one end excircle is equipped with the conical surface no. 1 on being global, be equipped with the groove that absorbs water on the conical surface no. 1, the inslot that absorbs water is equipped with the foam -rubber cushion, plug one end is equipped with the conical surface no. 2 with a conical surface conflict, compress tightly the hollow cylinder who is equipped with on the hoop with connector assembly, hollow cylinder and through -hole threaded connection, hollow cylinder keeps away from to compress tightly to bind round and holds the tip conflict of keeping away from the conical surface no. 1 with sealing washer no. 1, this kind of electric connector cable compresses tightly hoop department and has better leakproofness, avoids steam from compressing tightly inside the hoop gets into electric connector, and the foam -rubber cushion of the inslot that absorbs water can effectual absorption get into the inside a small amount of steam of electrical connection spare for more good of electric connector's leakproofness.

Description

A kind of electrical cnnector
Technical field
This utility model relates to a kind of electrically original paper field, more specifically, it relates to a kind of electrical cnnector.
Background technology
Electric connector is mainly applied and is carried out being electrically connected and signal transmission between device and device, assembly and assembly, system and system, is to constitute base components necessary to a completion system.Electric connector in correlation technique is by fixed end electric connector, i.e. female contact (abbreviation socket), and free-end electric connector, i.e. male contact (abbreviation plug) composition, socket is fixed in consuming parts (the most also using welding manner) by its side (justifying) dish, plug typically connects cable, realizes plug, socket connection by coupling nut;And hermetically-sealed electrical connector, it is usually to have in the environment of higher requirement in the sealing of adapter and uses, can be widely used in the chopper in mesohigh power transmission and distribution industry, GIS, all kinds of pressure tool instrument, pressure seal sensor, SF6 air density meter and the high pressure equipment of relevant SF6 air seal, all kinds of vacuum equipment, various kinds of equipment with hermetic container.
At present, a kind of circular hermetic seal connector (Application No. 201420410779.4) is disclosed on market, it includes can the inlet wire cavity that passes of current supply cable and be connected to the end cap of described inlet wire cavity upper end, described inlet wire inside cavity is provided with can the round platform sealing ring that passes of current supply cable, described round platform seal diameter small end is towards described end cap, and described round platform sealing ring upper surface is higher than described inlet wire cavity upper surface, described round platform sealing ring upper end is provided with the round platform compressing member being close to described round platform sealing ring outer surface, described end cap inwall is connected with described inlet wire chamber outer wall by screw thread;When described end cap screws on described inlet wire cavity, described round platform compressing member can move down along with described end cap, thus compresses described round platform sealing ring, makes described round platform sealing ring to contract.Although this circular sealing connector locks effect by round platform sealing ring and round platform compressing member, can have vertical and horizontal locking, the function of fixing cable simultaneously, guarantee the firmness of clamp in vibration or mobile occasion, can carry out a certain degree of waterproof simultaneously, but can not realize during the use of reality fully sealing, the water yield is relatively big or air relatively moistens when, have certain steam enter into inside adapter.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of more preferable electrical cnnector of sealing property.
For achieving the above object, this utility model provides following technical scheme: a kind of electrical cnnector, including plug and socket, the through hole passed for cable it is provided with in described plug, described plug is provided with cable compaction hoop away from socket end, sealing ring one it is provided with between described compaction hoop and plug, described sealing ring one one end outer circumference surface is provided with the conical surface one, the described conical surface one is provided with pick trough, it is provided with foam-rubber cushion in described pick trough, described plug one end is provided with the conical surface two conflicted with the conical surface one, described compaction hoop is provided with the hollow cylinder being connected with plug, described hollow cylinder is connected with through hole whorl, described hollow cylinder is conflicted away from the end of the conical surface one with sealing ring one away from compaction hoop end.
By using technique scheme, ensure that the electric connector plug better tightness near compaction hoop end, sealing ring self has good deformability, when sealing ring is by the conflict pressure of compaction hoop, the conical surface one on sealing ring and the conical surface two on plug are further fitted, and enhance sealing effectiveness, when having a small amount of steam to penetrate into adapter inside from sealing ring when, foam-rubber cushion in pick trough can further absorb steam, makes sealing effectiveness the best.
This utility model is further arranged to: described compaction hoop includes fixed block, compact heap, and described fixed block is fixing with hollow cylinder to be connected.
By using technique scheme so that compaction hoop is connected more firm with plug, secures the cable stretched out inside electrical cnnector, prevent cable stress from driving electrical cnnector to move so that the sealing of electrical cnnector produces and loosens.
This utility model is further arranged to: described compact heap and fixed block are all set to semi arch shape, and described compact heap and fixed block are connected by screw.
By using technique scheme, circular arc avoids formation gap between corner angle and cable and does not reaches the effect of fixed cable.
This utility model is further arranged to: be equipped with some grooves inside described compact heap and fixed block circular arc.
By using technique scheme, cable can deform upon in the case of power by compression, and insulating barrier cable outside is squeezed deformation and groove clamping, adds the seal in compaction hoop.
This utility model is further arranged to: described socket is set to ring flange, described ring flange side is provided with the Plug Division coordinated with plug grafting, described Plug Division is provided with the shrinkage pool coordinated with plug grafting, described shrinkage pool inwall is provided with sealing ring two, described ring flange opposite side is provided with wire connecting portion, and described wire connecting portion side is provided with sealing ring three.
By using technique scheme, at electrical connection, sealing ring is set up at each position so that the better tightness of adapter.
This utility model is further arranged to: described plug is provided with lock sleeve, and described lock sleeve is internal is provided with spacing block set near Plug Division end, and described plug is provided with the step conflicted with spacing block set, and described lock sleeve is threadeded with Plug Division.
By using technique scheme so that plug and socket connects more firm, it is to avoid adapter plug and socket grafting during using produces and loosens, and causes electrical cnnector sealing impaired.
This utility model is further arranged to: described plug is provided with the steady pin conflicted with hollow cylinder at compaction hoop.
By using technique scheme, effective guarantee compaction hoop will not be separated with plug by external force, also ensures that the sealing stability of sealing ring one.
This utility model is further arranged to: described plug is provided with spanner groove near compaction hoop end.
By using technique scheme, provide the fulcrum of power when of threadeding with plug for compaction hoop, enhance the connective stability of compaction hoop.
This utility model is further arranged to: described lock sleeve periphery is provided with anti-skidding lines.
By using technique scheme, add the frictional force between lock sleeve and staff's hands so that lock sleeve is threaded when tightening more stably enhances the power of screwing.
In sum, this utility model has the advantages that
At electrical cnnector cable compaction hoop, there is better seal, it is to avoid steam enters inside electrical cnnector at compaction hoop;The multiple connecting portion of electrical cnnector is equipped with sealing ring and effectively enhances sealing;The lock sleeve set up effectively enhances the connective stability of plug and socket.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of electrical cnnector;
Fig. 2 is the structural representation of plug;
Fig. 3 is compaction hoop fixed block and the structural representation of hollow cylinder connection;
Fig. 4 is the structural representation of side, jack connector portion;
Fig. 5 is the structural representation of side, socket Plug Division;
Fig. 6 is the structural representation of lock sleeve;
Fig. 7 is the structural representation of sealing ring one.
Reference: 1, plug;2, socket;21, ring flange;22, Plug Division;23, wire connecting portion;24, sealing ring two;25, sealing ring three;3, through hole;4, compaction hoop;41, fixed block;42, compact heap;5, sealing ring one;6, the conical surface one;7, hollow cylinder;8, screw;9, groove;10, lock sleeve;11, spacing block set;12, step;13, steady pin;14, spanner groove;15, anti-skidding lines;16, the conical surface two;17, shrinkage pool;18, pick trough;19, foam-rubber cushion.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
nullEmbodiment one: a kind of electrical cnnector,Such as Fig. 1、Shown in 2 and 7,Including plug 1 and socket 2,Plug 1 and socket 2 are all made cylindric,The through hole 3 passed for cable it is provided with in plug 1,Plug 1 is provided with cable compaction hoop 4 away from socket 2 end,Sealing ring 1 it is provided with between compaction hoop 4 and plug 1,Owing to compaction hoop 4 and plug 1 are not an entirety,So that electrical cnnector has good sealing,Water is avoided to enter the inside of electrical cnnector,Sealing ring 1 one end outer circumference surface is provided with the conical surface 1,Plug 1 one end is provided with the conical surface 2 16 coordinated with the conical surface 1,Sealing ring self has good elastic deformation,Have axial displacement under the effect of the pressure,The conical surface 1 closely will not be moved with the laminating of the conical surface 2 16 stress,The conical surface 1 stress on sealing ring 1 extruding simultaneously,The end diameter of the conical surface 1 of sealing ring 1 can reduce,Fit tightly with the cable passed,Ensure that the internal closure with cable of plug 1;The conical surface 1 is provided with pick trough 18, in pick trough 18, it is provided with foam-rubber cushion 19 simultaneously, although the effect of sealing can be played when sealing ring 1 compresses, but when the water yield is excessive or steam in air is the biggest when, have a small amount of steam and penetrate within adapter at sealing ring 1, at this moment the foam-rubber cushion 19 in pick trough 18 can further absorb steam, makes sealing effectiveness the best;Compaction hoop 4 is provided with the hollow cylinder 7 being connected with plug 1, and hollow cylinder 7 is threadeded with through hole 3, it is ensured that the connection that compaction hoop 4 and plug 1 can be stable, threaded facilitate between compaction hoop 4 and socket 2 slotting unload;Hollow cylinder 7 is conflicted away from the end of the conical surface 1 with sealing ring 1 away from compaction hoop 4 end, compaction hoop 4 is threadeded with socket 2 when, compaction hoop 4 is given and sealing ring 1 pressure, ensure that between sealing ring 1 and socket 2 and compaction hoop 4 very close to each other, also make the conical surface 1 of sealing ring 1 can be able to fit tightly with the conical surface 2 16 on plug 1 simultaneously and enhance sealing effectiveness.
Embodiment two: as shown in figs. 1 and 3, compaction hoop 4 includes fixed block 41 and compact heap 42, fixed block 41 is fixing with hollow cylinder 7 to be connected, while ensure that compaction hoop 4 and socket 2 is fixing and being connected, do not interfere with the working effect of self, compact heap 42 and fixed block 41 are all set to semi arch shape, circular arc avoids corner angle and compaction hoop 4 can sufficiently be contacted with the cable through electrical cnnector avoid the occurrence of gap, compact heap 42 and fixed block 41 are connected by screw 8, the compression of compaction hoop 4 is needed when cable is through plug 1, threaded compact heap 42 and fixed block 41 facilitate the dismounting of compaction hoop 4, running into quantity different cable when, compaction hoop 4 can be realized quickly install;Compaction hoop 4 also secures the cable stretched out inside electrical cnnector simultaneously, prevents cable stress from driving electrical cnnector to move so that the sealing of electrical cnnector produces to be destroyed.
Embodiment three: as shown in Figure 3, it is equipped with some grooves 9 inside compact heap 42 and fixed block 41 circular arc, cable in compaction hoop 4 can deform upon in the case of power by compression, insulating barrier outside cable is squeezed deformation, groove 9 clamping can be in close contact with the insulating barrier deformed upon, and adds the seal in compaction hoop 4.
Embodiment four: as shown in Figures 4 and 5, socket 2 is set to ring flange 21, ring flange 21 side is provided with the Plug Division 22 coordinated with plug 1 grafting, Plug Division (22) are provided with the shrinkage pool 17 coordinated with plug grafting, the plug 1 and the socket 2 that make electrical cnnector can quickly connect, it is provided with sealing ring 2 24 at shrinkage pool 17 inwall, enhance the sealing between plug 1 and socket 2, in the wire connecting portion 23 that ring flange 21 opposite side is provided with, wire connecting portion 23 side is provided with sealing ring 3 25, sealing ring 3 25 is made to make socket 2 have good sealing with other objects being connected when, at electrical connection, sealing ring is set up at each position, make the better tightness of adapter;Ring flange 21 is provided with some fixed vias, the position of socket 2 effectively can be fixed, it is to avoid electric connector plug 1 and socket 2 under tension simultaneously causes sealing impaired.
Embodiment five: such as Fig. 1, shown in 2 and 6, plug 1 is arranged with lock sleeve 10, lock sleeve 10 is internal is provided with spacing block set 11 near Plug Division 22 end, projection effectively secures the lock sleeve 10 position on socket 2, it is to avoid lock sleeve 10 side contacts with plug 1 to slidably reciprocate and causes lock sleeve 10 to wear and tear;Plug 1 is provided with the step 12 conflicted with spacing block set 11, spacing block set 11 and step 12 are conflicted and are defined the constraint to plug 1 position, plug 1 and socket 2 is made to connect more firm, avoid adapter plug 1 and socket 2 grafting during using to produce to loosen, cause electrical cnnector sealing impaired;Lock sleeve 10 is threadeded with Plug Division 22, threaded facilitates dismounting, when needs by plug 1 and socket 2 separately time, it is only necessary to turn on lock sleeve 10 the most permissible;Lock sleeve 10 periphery is provided with anti-skidding lines 15, adds the frictional force between lock sleeve 10 and staff's hands so that lock sleeve 10 is threaded more stably enhances the power of screwing.
As shown in Figure 1, at compaction hoop 4, the steady pin 13 conflicted with hollow cylinder 7 it is provided with at plug 1, hollow cylinder 7 is threadeded with plug 1, under the effect by external force threaded can produce loosening, hollow cylinder 7 and plug 1 produce sealing ring 1 after loosening and also can produce loosening, the sealing causing electrical cnnector produces to be destroyed, and steady pin 13 is effectively guaranteed threaded stability, also ensures that the sealing stability of sealing ring 1.
As shown in Figure 2, it is provided with spanner groove 14 near compaction hoop 4 end at plug 1, compaction hoop 4 is threadeded with plug 1 when, need to rotate compaction hoop 4 by fixing for plug 1, owing to plug 1 is that cylinder can produce skidding, spanner groove 14 is the fulcrum that compaction hoop 4 provides power with plug 1 when threaded, and enhances the connective stability of compaction hoop 4.
nullDetailed description of the invention: a kind of electrical cnnector,Including plug 1 and socket 2,The through hole 3 passed for cable it is provided with in plug 1,Plug 1 is provided with cable compaction hoop 4 away from socket 2 end,Owing to compaction hoop 4 and plug 1 are not an entirety,So that electrical cnnector has good sealing,Water is avoided to enter the inside of electrical cnnector,Need between compaction hoop 4 and plug 1, arrange a sealing ring 1,Sealing ring 1 one end excircle is provided with the conical surface 1,Plug 1 one end is provided with the conical surface 2 16 coordinated with the conical surface 1,On compaction hoop 4, it is provided with the hollow cylinder 7 being connected with plug 1 simultaneously,Hollow cylinder 7 is threadeded with through hole 3,Hollow cylinder 7 is conflicted away from the end of the conical surface 1 with sealing ring 1 away from compaction hoop 4 end,Compaction hoop 4 is threadeded with socket 2 when,Compaction hoop 4 is given and sealing ring 1 pressure,Ensure that the effect achieving sealing very close to each other between sealing ring 1 and socket 2 and compaction hoop 4,Threaded long-time under force after can loosen,So be provided with the steady pin 13 conflicted with hollow cylinder 7 at plug 1,Ensure that the stable connection between compaction hoop 4 and plug 1;During daily use, sealing ring 1 can not be effectively accomplished and fully seal, there may be some steam and penetrate into inside adapter, so being provided with pick trough 18 on the conical surface 1, being provided with foam-rubber cushion 19 in pick trough 18, foam-rubber cushion 19 can absorb and penetrate into the effect that the steam within adapter reaches to seal further simultaneously;Inside the fixed block 41 and compact heap 42 of compaction hoop 4, it is equipped with some grooves 9 simultaneously, cable in compaction hoop 4 can deform upon in the case of power by compression, insulating barrier outside cable is squeezed deformation, groove 9 clamping can be in close contact with the insulating barrier deformed upon, and enhances the seal in compaction hoop 4;Socket 2 is set to ring flange 21, shrinkage pool 17 inwall in the Plug Division 22 of the side of ring flange 21 is provided with sealing ring 2 24, enhance the sealing between plug 1 and socket 2, wire connecting portion 23 at ring flange 21 opposite side is provided with sealing ring 3 25, ensure that socket 2 has good sealing with other objects being connected when, at electrical connection, sealing ring is set up at each position so that the better tightness of adapter;Spacing block set 11 and step 12 within lock sleeve 10 are conflicted and are defined the constraint to plug 1 position, avoid adapter to produce during using to loosen, causing electrical cnnector sealing impaired, lock sleeve 10 is threadeded with Plug Division 22 simultaneously, threaded facilitates dismounting;Operator is assembling electrical cnnector when, owing to the parts on adapter are all smooth cylinders, skidding can be produced unavoidably, so being provided with spanner groove 14 on plug 1, being also provided with anti-skidding lines 15 on lock sleeve 10, the two combines the better tightness effectively increasing the electrical cnnector that frictional force makes to have assembled simultaneously.
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in right of the present utility model.

Claims (9)

  1. null1. an electrical cnnector,Including plug (1) and socket (2),The through hole (3) passed for cable it is provided with in described plug (1),Described plug (1) is provided with cable compaction hoop (4) away from socket end,It is characterized in that: between described compaction hoop (4) and plug (1), be provided with sealing ring one (5),Described sealing ring one (5) one end outer circumference surface is provided with the conical surface one (6),The described conical surface one (6) is provided with pick trough (18),Foam-rubber cushion (19) it is provided with in described pick trough (18),Described plug (1) one end is provided with the conical surface two (16) conflicted with the conical surface one (6),Described compaction hoop (4) is provided with the hollow cylinder (7) being connected with plug (1),Described hollow cylinder (7) is threadeded with through hole (3),Described hollow cylinder (7) is conflicted away from the end of the conical surface one (6) with sealing ring one (5) away from compaction hoop (4) end.
  2. A kind of electrical cnnector the most according to claim 1, is characterized in that: described compaction hoop (4) includes fixed block (41), compact heap (42), and described fixed block (41) is fixing with hollow cylinder (7) to be connected.
  3. A kind of electrical cnnector the most according to claim 2, is characterized in that: described compact heap (42) and fixed block (41) are semicircle arcuation, described compact heap (42) and fixed block (41) and are connected by screw (8).
  4. A kind of electrical cnnector the most according to claim 3, is characterized in that: be equipped with some grooves (9) inside described compact heap (42) and fixed block (41) circular arc.
  5. A kind of electrical cnnector the most according to claim 4, it is characterized in that: described socket (2) is set to ring flange (21), described ring flange (21) side is provided with the Plug Division (22) coordinated with plug (1) grafting, described Plug Division (22) is provided with the shrinkage pool (17) coordinated with plug (1) grafting, described shrinkage pool (17) inwall is provided with sealing ring two (24), described ring flange (21) opposite side is provided with wire connecting portion (23), and described wire connecting portion (23) side is provided with sealing ring three (25).
  6. A kind of electrical cnnector the most according to claim 5, it is characterized in that: described plug (1) is provided with lock sleeve (10), described lock sleeve (10) is internal is provided with spacing block set (11) near Plug Division (22) end, described plug (1) is provided with the step (12) conflicted with spacing block set (11), and described lock sleeve (10) is threadeded with Plug Division (22).
  7. A kind of electrical cnnector the most according to claim 6, is characterized in that: described plug (1) is provided with the steady pin (13) conflicted with hollow cylinder (7) near compaction hoop (4) place.
  8. A kind of electrical cnnector the most according to claim 7, is characterized in that: described plug (1) is provided with spanner groove (14) near compaction hoop (4) end.
  9. A kind of electrical cnnector the most according to claim 8, is characterized in that: described lock sleeve (10) periphery is provided with anti-skidding lines (15).
CN201620356236.3U 2016-04-25 2016-04-25 Electric connector Expired - Fee Related CN205583250U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620356236.3U CN205583250U (en) 2016-04-25 2016-04-25 Electric connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620356236.3U CN205583250U (en) 2016-04-25 2016-04-25 Electric connector

Publications (1)

Publication Number Publication Date
CN205583250U true CN205583250U (en) 2016-09-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620356236.3U Expired - Fee Related CN205583250U (en) 2016-04-25 2016-04-25 Electric connector

Country Status (1)

Country Link
CN (1) CN205583250U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107742802A (en) * 2017-10-18 2018-02-27 苏州雷目电子科技有限公司 A kind of waterproof connector structure of electronic product
CN107804247A (en) * 2017-10-25 2018-03-16 安徽江淮汽车集团股份有限公司 A kind of automobile inserting components
CN107813774A (en) * 2017-10-25 2018-03-20 安徽江淮汽车集团股份有限公司 A kind of automobile inserting components
CN109273914A (en) * 2018-10-18 2019-01-25 郑州福禄源电子科技有限公司 A kind of waterproof connector structure of electronic product
CN109779922A (en) * 2019-03-26 2019-05-21 浙江青霄科技股份有限公司 A kind of adjustable peripheral pump in impeller clearance
CN110854607A (en) * 2019-11-29 2020-02-28 盐城吉大智能终端产业研究院有限公司 Big data network connection port protective structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107742802A (en) * 2017-10-18 2018-02-27 苏州雷目电子科技有限公司 A kind of waterproof connector structure of electronic product
CN107804247A (en) * 2017-10-25 2018-03-16 安徽江淮汽车集团股份有限公司 A kind of automobile inserting components
CN107813774A (en) * 2017-10-25 2018-03-20 安徽江淮汽车集团股份有限公司 A kind of automobile inserting components
CN107804247B (en) * 2017-10-25 2019-09-24 安徽江淮汽车集团股份有限公司 A kind of automobile inserting components
CN107813774B (en) * 2017-10-25 2019-09-24 安徽江淮汽车集团股份有限公司 A kind of automobile inserting components
CN109273914A (en) * 2018-10-18 2019-01-25 郑州福禄源电子科技有限公司 A kind of waterproof connector structure of electronic product
CN109779922A (en) * 2019-03-26 2019-05-21 浙江青霄科技股份有限公司 A kind of adjustable peripheral pump in impeller clearance
CN110854607A (en) * 2019-11-29 2020-02-28 盐城吉大智能终端产业研究院有限公司 Big data network connection port protective structure
CN110854607B (en) * 2019-11-29 2021-06-29 盐城吉大智能终端产业研究院有限公司 Big data network connection port protective structure

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Granted publication date: 20160914

Termination date: 20170425