CN104913276B - Lamps and lanterns and its water-proof explosive-insulation connector - Google Patents
Lamps and lanterns and its water-proof explosive-insulation connector Download PDFInfo
- Publication number
- CN104913276B CN104913276B CN201410091237.5A CN201410091237A CN104913276B CN 104913276 B CN104913276 B CN 104913276B CN 201410091237 A CN201410091237 A CN 201410091237A CN 104913276 B CN104913276 B CN 104913276B
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- China
- Prior art keywords
- main body
- interconnecting piece
- water
- flanging
- proof
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/12—Flameproof or explosion-proof arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A kind of water-proof explosive-insulation connector, including connector main part, Coupling, the first cushion rubber, the second cushion rubber and binding post；Connector main part includes columnar main body and the interconnecting piece for being connected to main body one end；The side wall of one end that main body is connected with interconnecting piece, which outwardly protrudes, to form boss, the periphery of the one end of main body far from interconnecting piece outwardly protrudes to form the first flanging, the peripheral wall surfaces of first flanging and boss and main body surround the card slot along main body circumferentially extending jointly, and the inner sidewall of interconnecting piece and an end face of main body surround inserting groove jointly；Coupling is sheathed on the outside of main body, and is fastened in card slot, and the second open end offsets with the first flanging, and the side of the second flanging and boss offsets；First cushion rubber, is sheathed on outside interconnecting piece；Second cushion rubber is sheathed on Coupling outer terminal and is arranged in wiring hole.A kind of lamps and lanterns using above-mentioned water-proof explosive-insulation connector are additionally provided simultaneously.Above-mentioned lamps and lanterns and its water-proof explosive-insulation connector have the advantages that assembling is relatively simple.
Description
Technical field
The present invention relates to lamp technologies, more particularly to a kind of lamps and lanterns and its water-proof explosive-insulation connector.
Background technique
Currently, being designed with connector on lamps and lanterns, and to lamp joint and extraneous input to meet the sealing demand of lamps and lanterns
The junction of line is sealed, and guarantees lamps and lanterns safety and reliably working.
For traditional lamps and lanterns, extraneous input line is connected with lamps and lanterns, and the connector at input line generally uses
Glue seals to realize waterproof, flame proof.The process is more complicated for above-mentioned glue envelope, and the glue dry period is long, assembles relatively difficult.
Summary of the invention
Based on this, it is necessary to provide and a kind of assemble relatively simple water-proof explosive-insulation connector.
A kind of water-proof explosive-insulation connector, comprising:
Connector main part including columnar main body and is connected to the interconnecting piece of described main body one end；It is offered in the main body
Along axis of the body extend wiring hole, the side wall of one end that the main body is connected with the interconnecting piece outwardly protrude to be formed it is convex
Platform, the periphery of the one end of the main body far from the interconnecting piece outwardly protrude to form the first flanging, first flanging with it is described
The peripheral wall surfaces of boss and the main body surround jointly along the main body circumferentially extending card slot, the interconnecting piece be axially through
Tubular structure, the interconnecting piece and the main body are coaxially disposed, and an end face of the inner sidewall of the interconnecting piece and the main body is total
With inserting groove is surrounded, the first external screw thread is provided in the peripheral wall surfaces of the interconnecting piece, the boss is opened with first external screw thread
Equipped with the first container circumferentially extended along the interconnecting piece；
Coupling, is tubular structure, and the Coupling includes the first open end and opposite with first open end the
Two open ends, the periphery of first open end are outwardly protruded to form the second flanging, be provided on the lateral wall of the Coupling
Second external screw thread, second external screw thread and second flanging offer the second container, and the Coupling is sheathed on described
On the outside of main body, and be fastened in the card slot, second open end offsets with first flanging, second flanging and
The side of the boss offsets；
First cushion rubber is sheathed on outside the interconnecting piece, and is contained in first container；
Second cushion rubber is sheathed on outside the Coupling, and is contained in second container；And
Binding post is arranged in the wiring hole, and one end of the binding post protrudes from the main body far from the connection
The end face in portion, the other end enter in the inserting groove.
The boss is towards being provided with convex block, second folding on the side of the card slot in one of the embodiments,
While the convex block is sticked in the locating slot, so that described towards locating slot is offered on the described second externally threaded side
Second flanging is mutually fixed with the boss.
The outer peripheral edge of the boss is positive hexagonal structure in one of the embodiments,.
The outer peripheral edge of second flanging is positive hexagonal structure in one of the embodiments,.
The screw pitch of screw thread is more than or equal to 0.7mm in first external screw thread in one of the embodiments, and the number of threads is big
It is detained in being equal to 8.
The screw pitch of screw thread is more than or equal to 0.7mm in second external screw thread in one of the embodiments, and the number of threads is big
It is detained in being equal to 8.
The connector main part is made of PPS material injection in one of the embodiments,.
The Coupling and the binding post are each made of a metal in one of the embodiments,.
Fool proof portion is provided on the medial surface of the interconnecting piece in one of the embodiments,.
In addition, there is a need to provide a kind of lamps and lanterns using above-mentioned water-proof explosive-insulation connector.
A kind of lamps and lanterns, which is characterized in that including above-mentioned water-proof explosive-insulation connector.
Firstly, above-mentioned water-proof explosive-insulation connector, passes through the screw thread on the lamp housing of the second external screw thread and lamps and lanterns on Coupling
Hole is screwed, so that water-proof explosive-insulation connector is fixed on lamp housing, and keeps formation screw thread between water-proof explosive-insulation connector and lamp housing explosion-proof
Structure.Meanwhile second cushion rubber be located at the junction of lamp housing and water-proof explosive-insulation connector so that the connection of lamp housing and water-proof explosive-insulation connector
Place's sealing, plays the effect of waterproof, packaging technology is relatively simple, and explosion insulation performance and waterproof performance are all preferable.
In addition, above-mentioned water-proof explosive-insulation connector only includes connector main part, Coupling, the first cushion rubber, the second cushion rubber and binding post
Deng five components, structure is simple, and production molding is relatively easy to.
Detailed description of the invention
Fig. 1 is the explosive view of water-proof explosive-insulation connector in present pre-ferred embodiments.
Fig. 2 is the concrete structure diagram of water-proof explosive-insulation connector center tap main part shown in Fig. 1.
Fig. 3 is the concrete structure diagram of Coupling in water-proof explosive-insulation connector shown in Fig. 1.
Fig. 4 is the structure chart of water-proof explosive-insulation connector shown in Fig. 1.
Fig. 5 is the sectional view of water-proof explosive-insulation connector shown in Fig. 1.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Referring to Fig. 1, the lamps and lanterns (not shown) in present pre-ferred embodiments, including water-proof explosive-insulation connector 100.Waterproof every
Quick-fried connector 100 includes connector main part 110, Coupling 130, the first cushion rubber 150, the second cushion rubber 170 and binding post 190.
Referring to Figure 2 together, connector main part 110 is by PPS(Polyphenylene sulfide, polyphenylene sulfide) material system
At having the features such as high temperature resistant, corrosion-resistant, fire-retardant and good mechanical performance, easy to process.Connector main part 110 includes column
The main body 112 of shape and the interconnecting piece 114 for being connected to 112 one end of main body.
The wiring hole 112a axially extending along main body 112 is also provided in main body 112.Main body 112 is connected with interconnecting piece 114
The side wall of one end outwardly protrude to form boss 116.The periphery of the one end of main body 112 far from interconnecting piece 114 outwardly protrudes to be formed
First flanging 118.The peripheral wall surfaces of first flanging 118 and boss 116 and main body 112 are surrounded jointly along the circumferentially extending of main body 112
Card slot.
Interconnecting piece 114 be axially through tubular structure, interconnecting piece 114 and main body 112 are coaxially disposed.Interconnecting piece 114
One end face of inner sidewall and main body 112 surrounds inserting groove 113 jointly.The first external screw thread is provided in the peripheral wall surfaces of interconnecting piece 114
114a.Boss 116 and the first external screw thread 114a's offers the first container 115 circumferentially extended along interconnecting piece 114.
Coupling 130 can be made of metal material.Also referring to Fig. 3, Coupling 130 is tubular structure.Coupling 130
Including the first open end (figure is not marked) and second open end opposite with the first open end (figure is not marked).The periphery of first open end
It outwardly protrudes to form the second flanging 132.The second external screw thread 134, the second external screw thread 134 are provided on the lateral wall of Coupling 130
The second container 136 is offered with the second flanging 132.
Referring to Figure 4 together and Fig. 5, Coupling 130 is sheathed on 112 outside of main body, and is fastened in card slot.Second opening
End offsets with the first flanging 118, and the side of the second flanging 132 and boss 116 offsets, so that Coupling 130 is completely fixed
In on connector main part 110.
Specifically in the present embodiment, in connector main part 110, main body 112 is cylindrical-shaped structure, the inside of Coupling 130
Offer cylindrical hole compatible with main body 112 (figure is not marked).It should be pointed out that main body 112 can also be other shapes,
Such as rectangular cylindrical structures, meanwhile, the inside of Coupling 130 offers through-hole compatible with main body 112.
Meanwhile when Coupling 130 is sheathed on 112 outside of main body in order to prevent, Coupling 130 is rotated relative to main body 112.
Boss 116 is towards being provided with convex block 116a on the side of card slot, and the second flanging 132 is towards opening on the side of the second external screw thread 134
Equipped with locating slot 132a.Convex block 116a is sticked in locating slot 132a, so that the second flanging 132 is fixed with 116 phase of boss, is prevented
Coupling 130 is rotated relative to main body 112.
It is appreciated that water-proof explosive-insulation connector 100 may also include pin shaft (not shown), on the second flanging 132 and boss 116
Offer pin shaft hole (not shown), pin shaft wears the pin shaft hole on the second flanging 132 and boss 116 so that the second flanging 132 with
116 phase of boss is fixed, to prevent Coupling 130 from rotating relative to main body 112, the convex block 116a and second on boss 116 at this time
Locating slot 132a on flanging 132 can be saved.
First cushion rubber 150 is sheathed on outside interconnecting piece 114, and is contained in the first container 115.Second cushion rubber 170 is arranged
In outside Coupling 130, and it is contained in the second container 136.
Binding post 190 is made of metal material.Binding post 190 is arranged in wiring hole 112a, and one end of binding post 190 is convex
End face for main body 112 far from interconnecting piece 114, the other end enter in inserting groove 113.Specifically in the present embodiment, binding post
190 be three, respectively corresponds positive and negative, ground wire, wiring hole 112a is also three, and three binding posts 190 wear three wiring respectively
Hole 112a.
Above-mentioned water-proof explosive-insulation connector 100, by the second external screw thread 134 on Coupling 130 on the lamp housing of lamps and lanterns
Threaded hole (not shown) is screwed, so that water-proof explosive-insulation connector 100 is fixed on lamp housing, the electricity of binding post 190 and lamp interior
Road electrical connection.The screw pitch of screw thread is more than or equal to 0.7mm in second external screw thread 134, and the number of threads is more than or equal to 8 buttons, so that waterproof
Screw thread blast resistance construction is formed between flame proof connector 100 and lamp housing.When water-proof explosive-insulation connector 100 is fixed on lamp housing, interconnecting piece 114
It protrudes from except lamp housing.Meanwhile second cushion rubber 170 be located at the junction of lamp housing and water-proof explosive-insulation connector 100 so that lamp housing and anti-
The junction of water flame proof connector 100 seals, and plays the effect of waterproof.
When specific works, the shape of external plug (not shown) is adapted with the shape of inserting groove 113, external plug insertion
In inserting groove 113, to be electrically connected by binding post 190 and the circuit of lamp interior, and pass through snap ring (not shown) and the
One screw thread is connected, so that external plug is connected firmly with water-proof explosive-insulation connector 100.The screw pitch of screw thread in first external screw thread 114a
More than or equal to 0.7mm, the number of threads is more than or equal to 8 buttons, so that it is anti-to form screw thread between water-proof explosive-insulation connector 100 and external plug
Quick-fried structure.Second cushion rubber 170 is located at the junction of external plug and water-proof explosive-insulation connector 100 so that external plug and waterproof every
The junction of quick-fried connector 100 seals, to further function as the effect of waterproof.
Fool proof portion is provided on the medial surface of interconnecting piece 114, it is external to prevent external plug when being inserted into inserting groove 113
There is mistake in the direction of insertion of plug.Specifically in the present embodiment, fool proof portion is to be set on the medial surface of interconnecting piece 114 to be in
Planar fool proof face, external plug are designed as shape compatible with inserting groove 113, rather than traditional cylinder, so that
External plug needs to be inserted into inserting groove 113 by alignment, and the direction of insertion of external plug is effectively prevent mistake occur.
Specifically in the present embodiment, in the manufacturing process to water-proof explosive-insulation connector 100, first Coupling 130 can be made
Molding, then Coupling 130 is put into mold, PPS material injection is entered in mold, so that 110 injection molding of connector main part.It is convex
The outer peripheral edge of platform 116 is positive hexagonal structure.The outer peripheral edge of second flanging 132 is also positive hexagonal structure, to facilitate butt joint
The processing of main part 110 and Coupling 130.
It is appreciated that the material of connector main part 110 is not limited to PPS, it can be also other High performance plastic resin materials.
The outer peripheral edge of boss 116 and the outer peripheral edge of the second flanging 132 are not limited to regular hexagon simultaneously, can also for regular quadrangle, just
The regular shapes such as octagon.
In addition, the first external screw thread 114a and the second external screw thread 134 are also not necessarily limited to above structure, screw pitch and the number of threads
It can change according to the actual situation, need to only meet the requirement of flame proof.
Above-mentioned lamps and lanterns and its water-proof explosive-insulation connector 100 at least have following advantages compared with traditional technology:
Firstly, above-mentioned water-proof explosive-insulation connector 100, passes through the lamp housing of the second external screw thread 134 and lamps and lanterns on Coupling 130
On threaded hole be screwed so that water-proof explosive-insulation connector 100 is fixed on lamp housing, and make water-proof explosive-insulation connector 100 and lamp housing it
Between formed screw thread blast resistance construction.Meanwhile second cushion rubber 170 be located at the junction of lamp housing and water-proof explosive-insulation connector 100 so that lamp housing
Sealed with the junction of water-proof explosive-insulation connector 100, play the effect of waterproof, packaging technology is relatively simple, and explosion insulation performance and
Waterproof performance is all preferable.
In addition, above-mentioned water-proof explosive-insulation connector 100 only includes connector main part 110, Coupling 130, the first cushion rubber 150, second
Five components such as cushion rubber 170 and binding post 190, structure is simple, and production molding is relatively easy to.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (11)
1. a kind of water-proof explosive-insulation connector characterized by comprising
Connector main part including columnar main body and is connected to the interconnecting piece of described main body one end；It is offered in the main body along institute
The axially extending wiring hole of main body is stated, the side wall of one end that the main body is connected with the interconnecting piece, which outwardly protrudes, to form boss,
The periphery of the one end of the main body far from the interconnecting piece outwardly protrudes to form the first flanging, first flanging and the boss
And the peripheral wall surfaces of the main body surround the card slot along main body circumferentially extending jointly, the boss is towards the side of the card slot
On be provided with convex block, the interconnecting piece be axially through tubular structure, the interconnecting piece and the main body are coaxially disposed, described
One end face of the inner sidewall of interconnecting piece and the main body surrounds inserting groove jointly, is provided with first in the peripheral wall surfaces of the interconnecting piece
External screw thread, the boss and first external screw thread offer the first container along interconnecting piece circumferentially extending；
Coupling is tubular structure, and the Coupling includes that the first open end and opposite with first open end second open
Mouth end, the periphery of first open end outwardly protrude to form the second flanging, are provided with second on the lateral wall of the Coupling
External screw thread, second external screw thread and second flanging offer the second container, and the Coupling is sheathed on the main body
Outside, and being fastened in the card slot, second open end offsets with first flanging, second flanging with it is described
The side of boss offsets, and second flanging is towards offering locating slot, the convex block on the described second externally threaded side
It is sticked in the locating slot, so that second flanging is mutually fixed with the boss；
First cushion rubber is sheathed on outside the interconnecting piece, and is contained in first container；
Second cushion rubber is sheathed on outside the Coupling, and is contained in second container；And
Binding post is arranged in the wiring hole, and one end of the binding post protrudes from the main body far from the interconnecting piece
End face, the other end enter in the inserting groove.
2. water-proof explosive-insulation connector according to claim 1, which is characterized in that the outer peripheral edge of the boss is regular hexagon knot
Structure.
3. water-proof explosive-insulation connector according to claim 1, which is characterized in that the outer peripheral edge of second flanging is positive six sides
Shape structure.
4. water-proof explosive-insulation connector according to claim 1, which is characterized in that the screw pitch of screw thread is big in first external screw thread
In being equal to 0.7mm, the number of threads is more than or equal to 8 buttons.
5. water-proof explosive-insulation connector according to claim 1, which is characterized in that the screw pitch of screw thread is big in second external screw thread
In being equal to 0.7mm, the number of threads is more than or equal to 8 buttons.
6. water-proof explosive-insulation connector according to claim 1, which is characterized in that the connector main part is by PPS material injection system
At.
7. water-proof explosive-insulation connector according to claim 1, which is characterized in that the Coupling and the binding post are by gold
Category is made.
8. water-proof explosive-insulation connector according to claim 1, which is characterized in that be provided on the medial surface of the interconnecting piece anti-
Slow-witted portion.
9. water-proof explosive-insulation connector according to claim 8, which is characterized in that the fool proof portion is to be set to the interconnecting piece
Medial surface on be in planar fool proof face.
10. water-proof explosive-insulation connector according to claim 1, which is characterized in that the binding post and the wiring hole are
Three, three binding posts, which respectively correspond, wears three wiring holes.
11. a kind of lamps and lanterns, which is characterized in that including the described in any item water-proof explosive-insulation connectors of such as claim 1~10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410091237.5A CN104913276B (en) | 2014-03-12 | 2014-03-12 | Lamps and lanterns and its water-proof explosive-insulation connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410091237.5A CN104913276B (en) | 2014-03-12 | 2014-03-12 | Lamps and lanterns and its water-proof explosive-insulation connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104913276A CN104913276A (en) | 2015-09-16 |
| CN104913276B true CN104913276B (en) | 2019-09-17 |
Family
ID=54082559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410091237.5A Active CN104913276B (en) | 2014-03-12 | 2014-03-12 | Lamps and lanterns and its water-proof explosive-insulation connector |
Country Status (1)
| Country | Link |
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| CN (1) | CN104913276B (en) |
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| CN201629546U (en) * | 2010-07-19 | 2010-11-10 | 湖南城市学院 | Waterproof joint |
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| CN102748722A (en) * | 2011-04-21 | 2012-10-24 | 海洋王照明科技股份有限公司 | Explosion-proof lamp and overcurrent insert device thereof |
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| CN203444140U (en) * | 2013-05-31 | 2014-02-19 | 南京智达康无线通信科技股份有限公司 | Waterproof structure for outdoor optical fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614035A (en) * | 2012-04-26 | 2012-08-01 | 上海晟实医疗器械科技有限公司 | Semi-pelvic prosthesis |
| CN203421368U (en) * | 2013-06-26 | 2014-02-05 | 天台县富华塑胶有限公司 | Special connector for expansion pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH118009A (en) * | 1997-06-18 | 1999-01-12 | Honda Tsushin Kogyo Kk | Waterproof connector and electronic apparatus casing incorporating it and combination of electronic apparatus casing incorporating it and its mating waterproof connector |
| CN201623424U (en) * | 2009-12-18 | 2010-11-03 | 深圳市宏欣旭实业发展有限公司 | Rapid terminal box |
| CN201636476U (en) * | 2010-01-29 | 2010-11-17 | 宁波瀛震机械部件有限公司 | Quick fastening structure |
| CN201629546U (en) * | 2010-07-19 | 2010-11-10 | 湖南城市学院 | Waterproof joint |
| CN102748722A (en) * | 2011-04-21 | 2012-10-24 | 海洋王照明科技股份有限公司 | Explosion-proof lamp and overcurrent insert device thereof |
| CN202902192U (en) * | 2012-02-23 | 2013-04-24 | 东莞市凯晟灯头实业有限公司 | An assembled-type lamp holder structure |
| CN203444140U (en) * | 2013-05-31 | 2014-02-19 | 南京智达康无线通信科技股份有限公司 | Waterproof structure for outdoor optical fiber |
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| Publication number | Publication date |
|---|---|
| CN104913276A (en) | 2015-09-16 |
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